CN220729036U - Multi-wheel single-piece crossbow - Google Patents

Abstract

The utility model relates to the technical field of athletic appliances, in particular to a multi-wheel single-piece crossbow, which comprises: a main body; the handle assembly is arranged along the longitudinal direction of the main body and is fixedly connected to the lower part of the main body; the bow piece is arranged along the length direction of the main body, one end of the bow piece is fixedly connected to the handle assembly, the other end of the bow piece is a free end, and the free end of the bow piece extends a certain distance towards the front end direction of the main body and can swing to change the distance between the bow piece and the main body; a string pulley connected to the free end of the bow piece and provided with a first pulley and a second pulley respectively opposite to the two sides of the bow piece; and the bowstring assembly is used for pushing out a bolt and comprises two opposite ends, and the two ends of the bowstring assembly are respectively and fixedly connected to the first pulley and the second pulley. In conclusion, the transverse occupied space of the crossbow can be reduced, the transverse volume of the crossbow is reduced, the crossbow is convenient to use and carry, the winding difficulty and time can be reduced, and labor is saved.

Description

Multi-wheel single-piece crossbow

Technical Field

The utility model relates to the technical field of athletic appliances, in particular to a multi-wheel single-piece crossbow.

Background

The crossbow mainly comprises a crossbow arm, a crossbow bow, a bow string, a crossbow machine and the like. Although the filling time of the crossbow is longer than that of the bow, the crossbow has the advantages of longer shooting range, stronger killing power, higher hit rate and lower requirement on users, and is an ancient powerful long-distance killing weapon.

In addition, the bow and crossbow is also a traditional sports, leisure and hunting article and is favored by some sports lovers and outdoor sports lovers.

The Chinese patent document with publication number CN207866103U discloses a crossbow for winding by foot, which comprises a crossbow arm, a crossbow bow and a crossbow machine, wherein a winding handle which moves forwards and backwards is arranged on the bottom surface of the crossbow arm in a guiding sliding manner, a pair of string pulling hooks which protrude towards the top surface of the crossbow arm in a guiding sliding manner are arranged on the front and back of the left side and the right side of the crossbow arm, and the winding handle is in transmission connection with the string pulling hooks through two groups of synchronous chain transmission mechanisms which are symmetrically arranged on the two sides of the crossbow arm; the crossbow machine comprises a string hanging hook, a lock rod and a trigger, wherein a locking notch is arranged at the bottom of the string hanging hook, a bolt which is locked with the locking notch after rotating anticlockwise is arranged at the front end of the lock rod, the trigger is rotationally assembled on an upper string handle, a push rod which is in contact with the bottom surface of the rear end of the lock rod in a pushing manner is fixed at the rear end of the trigger, and a safety knob which is in stop fit with the top surface of the rear end of the lock rod is rotationally arranged on a crossbow arm.

The Chinese patent document with the open (bulletin) number of CN208223288U discloses a repeating crossbow, comprising a crossbow arm, a crossbow bow, bowstring and a crossbow machine, wherein the crossbow bow is fixedly arranged at the front end of the crossbow arm, the rear end of the crossbow arm is provided with a rear grip, the front end of the crossbow arm is provided with a front grip, the crossbow arm is provided with a sliding block, the sliding block is longitudinally and slidingly connected with the crossbow arm, the top of the crossbow arm is fixedly provided with an arrow cabin, a mounting rail is arranged between the arrow cabin and the crossbow arm and is used for conveniently adjusting the position of the arrow cabin and facilitating quick replacement of the arrow cabin, the arrow cabin is provided with a plurality of longitudinally communicated arrow holes, each arrow hole is provided with a slidingly connected hammer, each hammer is fixedly connected with the sliding block, the bowstring is positioned below the crossbow arm, the two ends of the bowstring are connected with the crossbow bow, and the bowstring body of the bowstring is hung with the sliding block.

Modern crossbows generally adopt leaf springs as bow bodies, store potential energy by utilizing the elastic deformation of the leaf springs, and provide energy for the ejection of crossbows. However, as a main force accumulating device of the crossbow, the existing crossbow requires a large transverse extension space to provide flexible deformation for the leaf spring. Also because of the excessive space occupied, crossbows are not suitable for use in sports, especially in jungles and houses. Even when not in use, it is extremely difficult to carry.

In addition, in order to increase the initial speed and penetration of the bolt, the bolt requires a greater tension when pulling the string due to the use of a leaf spring having a greater modulus of elasticity. Part strong crossbow need increase pedal ring at the front end of crossbow even, utilizes the supplementary string of drawing of foot, and is laborious consuming time, uses very inconveniently.

Therefore, how to reduce the transverse occupied space of the crossbow and reduce the transverse volume of the crossbow, so that the crossbow is convenient to use and carry, and meanwhile, the winding difficulty is reduced, which is a technical problem worthy of research.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.

The utility model provides a multi-round single-piece crossbow, comprising: a main body having a certain length and width, one end along the length direction thereof being set as a rear end, the other end thereof being set as a front end, the other end thereof being set as a lateral direction along the width direction thereof, and the direction perpendicular to the length direction and the lateral direction being set as a longitudinal direction; the handle assembly is arranged along the longitudinal direction of the main body and is fixedly connected to the lower part of the main body; the bow piece is arranged along the length direction of the main body, one end of the bow piece is fixedly connected to the handle assembly, the other end of the bow piece is a free end, and the free end of the bow piece extends a certain distance towards the front end direction of the main body and can swing to change the distance between the bow piece and the main body; a string pulley connected to the free end of the bow piece and provided with a first pulley and a second pulley respectively opposite to the two sides of the bow piece; and the bowstring assembly is used for pushing out a bolt and comprises opposite two ends, and the two ends of the bowstring assembly are respectively and fixedly connected to the first pulley and the second pulley.

As a further scheme of the utility model: the string pulley is provided with a first wheel shaft and a string pulley groove, the first wheel shaft is parallel to the lateral direction of the body, and is rotatably connected to the free end of the bow piece; the string wheel groove is arranged on the periphery of the string pulley, and two ends of the bowstring assembly are respectively fixedly connected to the first pulley and the second pulley and bypass the corresponding string wheel groove.

As a further scheme of the utility model: the string pulley is provided with a string auxiliary wheel and a winding wheel, the string auxiliary wheel and the string pulley are coaxially arranged and fixedly connected to the first wheel shaft, and the winding wheel is rotationally connected to the part of the string pulley between the first wheel shaft and the string pulley groove; the string auxiliary wheel is provided with a spiral groove, the bowstring assembly is provided with an auxiliary string, one end of the auxiliary string is fixedly connected to the main body, and the other end of the auxiliary string is sequentially wound around the spiral groove and the winding wheel and is fixedly connected to the string pulley.

As a further scheme of the utility model: the double-layer pulley is provided with a second wheel shaft, a first wheel groove and a second wheel groove, the second wheel shaft is parallel to the longitudinal direction of the body and is rotationally connected to the main body, and the double-layer pulley is sleeved on the second wheel shaft and rotates around the second wheel shaft; the bow string assembly is provided with a first main string and a second main string, one end of the first main string is fixedly connected to the string pulley, and the other end of the first main string bypasses the first wheel groove and is fixedly connected to the double-layer pulley; the two sides of the main body of the double-layer pulley are respectively provided with a third pulley and a fourth pulley, and two ends of the second main string respectively bypass a second pulley groove of the third pulley and a second pulley groove of the fourth pulley and are respectively and fixedly connected with the third pulley and the fourth pulley; the winding directions of the first main string and the second main string on the double-layer pulley are opposite to each other.

As a further scheme of the utility model: the support trolley is connected to the body in a rotating mode and connected to a body part between the string pulley and the double-layer pulley, the support trolley is provided with a third wheel shaft and a third wheel groove, the third wheel shaft is parallel to the lateral direction of the body, and the third wheel groove is used for supporting the first main string.

As a further scheme of the utility model: the front end of main part is provided with bowstring damping gum, bowstring damping gum sets up the both sides at the main part respectively to cushion or shock attenuation to the second main string after the percussion.

As a further scheme of the utility model: the trigger mechanism comprises a main body, and is characterized in that a trigger assembly is arranged at the rear end of the main body and is provided with a linkage trigger, a trigger connecting rod, a trigger self-locking clamping piece and a trigger lock hook, wherein the linkage trigger, the trigger self-locking clamping piece and the trigger lock hook are respectively connected with the main body in a rotating way, one end of the trigger connecting rod is pivoted with the linkage trigger, and the other end of the trigger connecting rod is pivoted with the trigger self-locking clamping piece; the trigger self-locking clamping piece is provided with a self-locking spring, one end of the self-locking spring is abutted on the main body, and the other end of the self-locking spring is abutted on the trigger self-locking clamping piece; the trigger latch hook is provided with an unlocking spring, one end of the unlocking spring is abutted on the main body, and the other end of the unlocking spring is abutted on the trigger latch hook.

As a further scheme of the utility model: the winding device comprises a main body, and is characterized by further comprising a winding assembly, wherein the winding assembly is provided with a winding draw hook, a winding belt and a winding winch, the winding draw hook is movably connected to the main body, the winding winch is rotatably connected to the main body, one end of the winding belt is fixedly connected to the winding draw hook, and the other end of the winding belt is wound on the winding winch and is fixedly connected to the winding winch.

As a further scheme of the utility model: the winding assembly is further provided with a winding rocker arm, a hand gear and a winch gear, the winch gear and the winding winch are coaxially arranged and are fixedly connected with each other, the hand gear and the winch gear are in meshed connection with each other, the winding rocker arm and the hand gear are coaxially arranged and are fixedly connected with each other, and a rocker arm rod of the winding rocker arm is of a telescopic structure.

As a further scheme of the utility model: the winding assembly is further provided with an automatic shrinkage winch and an automatic shrinkage cable, the automatic shrinkage winch is fixedly connected to the main body, one end of the automatic shrinkage cable is wound on the automatic shrinkage winch and fixedly connected to the winding hook, and the other end of the automatic shrinkage cable is fixedly connected to the winding hook.

Compared with the prior art, the utility model has the beneficial effects that:

1. through set up monolithic bow piece in the length direction of main part to reduced the horizontal volume of bow, reduced horizontal occupation space, made the bow can more facilitate the use and carry.

2. By adopting the design of a single bow piece, the consumption and the assembly procedure of the bow piece are reduced, the production steps are reduced, and the production cost is saved.

3. And by arranging two string pulleys and two double-layer pulleys, the two main strings and one auxiliary string are matched with each other, so that the string-up time is shortened, and the labor is saved.

4. In addition, the rocker arm rod of the winding rocker arm can also adopt a telescopic structure, so that the occupied space of the bow and crossbow is optimized, and the carrying is more convenient.

Therefore, through the improvement, the multi-wheel single-piece crossbow can be provided, the transverse occupied space of the crossbow can be reduced, the transverse volume of the crossbow is reduced, the crossbow is convenient to use and carry, the winding difficulty and time can be reduced, and the labor is saved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic illustration of the extension of the rocker arm of the present utility model;

FIG. 3 is a schematic view of the structure of the arches of the present utility model;

FIG. 4 is a schematic view of the bowstring assembly of the present utility model;

FIG. 5 is a schematic view of the construction of the winding assembly of the present utility model;

FIG. 6 is a schematic view of the firing assembly of the present utility model;

FIG. 7 is a schematic view of the structure of the spiral groove of the present utility model;

fig. 8 is a schematic structural view of a string pulley of the present utility model;

fig. 9 is a schematic view of the structure of the double-layered pulley of the present utility model;

fig. 10 is a schematic view of the structure of the supporting small wheel of the present utility model.

Reference numerals and names in the drawings are as follows:

10 a main body; 11 front end; 12 rear end; 13 bowstring damping gel; 14 a grip assembly; 15 bow sheets; 16 free ends; 17 bow piece seat gland; a 20 bowstring assembly; 21 a first major chord; 22 a second major chord; 23 auxiliary strings; 30 string pulleys; 31 a first pulley; 32 a second pulley; 33 a first axle; 34 string wheel groove; 35 string auxiliary wheel; 36 helical grooves; 37 reel; 40 double layer pulley; 41 a second axle; 42 a first wheel well; 43 second wheel groove; 44 a third pulley; 45 a fourth pulley; 50 supporting a small wheel; 51 a third axle; 52 a third wheel well; 60 firing assembly; 61 linkage trigger; 62 trigger links; 63 trigger self-locking clip; 64 self-locking springs; 65 trigger latch hook; 66 unlocking a spring; 67 trigger safety fittings; a trigger push arrow fitting 68; 70 winding assembly; 71 winding a drag hook; 72 winding a string; 73 winding winch; 74 capstan gears; 75 hand-operated gears; 76 gear latch; 77 winding rocker arms; 78 rocker arm lever; 80 automatically retracting the winch; 81 automatically retract the cable.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 10, in an embodiment of the present utility model, a multi-round single-piece crossbow includes: a main body 10 having a certain length and width, one end along its length being provided as a rear end 12, the other end being provided as a front end 11, the other end being provided as a lateral direction along its width direction, and the direction perpendicular to the length direction and the lateral direction being provided as a longitudinal direction; a grip assembly 14 disposed along a longitudinal direction of the body 10 and fixedly coupled to a lower portion of the body 10; an arcuate piece 15 disposed along the length direction of the main body 10, one end of which is fixedly connected to the grip assembly 14 and the other end of which is provided with a free end 16, the free end 16 of the arcuate piece 15 extending a certain distance in the direction of the front end 11 of the main body 10 and being capable of changing the distance from the main body 10 in a swinging manner; a string pulley 30 connected to the free end 16 of the segment 15 and provided with a first pulley 31 and a second pulley 32, respectively, opposite to both sides of the segment 15; and a bowstring assembly 20 for ejecting a bolt, comprising opposite ends, the ends of the bowstring assembly 20 being fixedly connected to a first pulley 31 and a second pulley 32, respectively.

Specifically, the conventional bow and crossbow basically adopts two leaf springs respectively arranged on the left side and the right side of the main body 10, two ends of the bowstring assembly 20 are respectively connected to two ends of the leaf springs, and the bow and crossbow assembly 20 is pulled to push out the bow and crossbow at a high speed by utilizing the elastic deformation of the leaf springs, so that the shooting action is completed. The two leaf springs are arranged left and right respectively, so that the degree of elastic deformation can be increased, and the bowstring assembly 20 can be stretched for a proper length to finish the winding action. But after setting up about two leaf springs, make bow body upwards volume too big in the side about, be inconvenient for remove the in-process and shoot, be inconvenient for again accomodate at ordinary times and carry. There is therefore a need for optimizing and improving the volume of crossbows. First, the two leaf springs arranged left and right can be changed in arrangement position and reduced in number, that is, the leaf spring of a single piece is elastically deformed in the longitudinal direction of the body. For ease of understanding and description, the front of the launch bolt of the bow body may be set to the front end 11, i.e., the position of the arrow of the bolt is set to the front end 11, and the position of the tail of the bolt is set to the rear end 12; the width direction of the body is set to be lateral, that is, the left-right direction of the body is set to be lateral, and the up-down direction of the body is set to be longitudinal.

Secondly, in order to allow the single leaf spring to be elastically deformed, thereby providing elastic force, the single leaf spring needs to be fixedly connected to the body. Namely, in the present application, one end of the bow 15 is preferably fixedly connected to the handle, and one end of the bow 15 can be fixed to the handle through the bow seat gland 17; the other end of which is provided with a free end 16 which can oscillate and elastically deform the segment 15 so as to provide elasticity. The string pulley 30 is attached to the free end 16 of the archwire 15, and the ends of the bowstring assembly 20 are fixedly attached to a first pulley 31 and a second pulley 32, respectively, of the string pulley 30. Stretching the bowstring assembly 20 can drive the string pulley 30 and the free end 16 of the bow 15 to move, so as to drive the bow 15 to elastically deform, and the elasticity of the bow 15 can drive the bowstring assembly 20 to shoot a crossbow bolt which is placed on the body and abuts against the bowstring assembly 20 at a high speed. In this embodiment, since the string pulley 35 and the auxiliary string 23 are not provided, the string pulley 30 may be fixedly attached to the free end 16 of the blade 15, and the pulling of the bowstring assembly 20 directly pulls the blade 15 into elastic deformation, thereby storing potential energy and providing energy for the ejection of a bolt. It will be appreciated that in this condition, the extent of deformation of the free end 16 is directly related to the travel distance of the bowstring assembly 20 and exhibits a one-to-one relationship, and if it is desired to increase the travel distance of the bowstring assembly 20, and to increase the range and initial speed of the bolt, it is desired to increase the extent of deformation of the archwire 15.

In addition, corresponding winding assembly 70 and firing assembly 60 may be provided on the body, when winding the bow body, the bow assembly 20 may be pulled to move toward the rear end 12 and be engaged with the trigger latch 65 of the firing assembly 60, then the bow body is lifted up, after aiming at the target, the linkage trigger 61 of the firing assembly 60 is triggered to release the trigger latch 65, and meanwhile the bow assembly 20 is released, so that the bow assembly 20 forms a strong thrust to the tail end of the bolt, and the bolt is ejected.

As shown in fig. 7 and 8, the string pulley 30 is preferably provided with a first axle 33 and a string pulley groove 34, said first axle 33 being arranged parallel to the lateral direction of the body and being rotatably connected to the free end 16 of the segment 15; the string pulley groove 34 is disposed on the outer circumference of the string pulley 30, and both ends of the bowstring assembly 20 respectively bypass the string pulley groove 34 and are fixedly connected to the first pulley 31 and the second pulley 32. The string pulley 30 is provided with a string auxiliary wheel 35 and a reel 37, the string auxiliary wheel 35 and the string pulley 30 are coaxially arranged and fixedly connected to the first wheel shaft 33, and the reel 37 is rotatably connected to the string pulley 30 at a position between the first wheel shaft 33 and the string pulley groove 34; the string auxiliary wheel 35 is provided with a spiral groove 36, the bowstring assembly 20 is provided with an auxiliary string 23, one end of the auxiliary string 23 is fixedly connected to the main body 10, and the other end of the auxiliary string is sequentially wound around the spiral groove 36 and the reel 37 and is fixedly connected to the string pulley 30.

Specifically, first, the string pulley groove 34 is a groove provided on the outer peripheral surface of the string pulley 30 for receiving the first main string 21. It will be appreciated that one end of the first main string 21 is fixedly attached to the string pulley 30 and then wrapped a length in the string pulley groove 34, and pulling on the first main string 21 rotates the string pulley 30 an angle. In addition, the first axle 33 preferably forms a bearing connection with the free end 16 of the segment 15 via a bearing (not shown) so that the string pulley 30 can rotate relative to the first axle 33.

Second, in another embodiment, the string pulley 30 may be rotatably attached to the free end 16 of the archwire 15 in order to increase the travel distance of the bowstring assembly 20. In order to apply a reverse force to the string pulley 30 and to apply a certain reaction force to the traction of the first main string 21, a corresponding string sub-wheel 35 may be provided on the string pulley 30 and a spiral winding may be applied to the sub-string 23 via a spiral groove 36 on the string sub-wheel 35. When the string pulley 30 rotates under the traction of the first main string 21, the string auxiliary wheel 35 coaxially arranged with the first main string 21 also rotates synchronously, and the auxiliary string 23 is wound through the spiral groove 36, so that the bow 15 can be pulled to the body, and the bow 15 is subjected to certain elastic deformation, so that potential energy is stored, and energy is provided for shooting of crossbow.

As shown in fig. 9 and 10, it is preferable to further include a double-layered pulley 40 rotatably connected to the main body 10 and provided with a third pulley 44 and a fourth pulley 45 with respect to both sides of the main body 10, respectively, the double-layered pulley 40 is provided with a second wheel shaft 41, a first wheel groove 42 and a second wheel groove 43, the second wheel shaft 41 is disposed parallel to the longitudinal direction of the main body and rotatably connected to the main body 10, and the double-layered pulley 40 is sleeved on the second wheel shaft 41 and rotates around the second wheel shaft 41; the bowstring assembly 20 is provided with a first main chord 21 and a second main chord 22, one end of the first main chord 21 bypasses the string pulley groove 34 and is fixedly connected to the string pulley 30, and the other end bypasses the first pulley groove 42 and is fixedly connected to the double-layer pulley 40; the two ends of the second main chord 22 respectively bypass the second wheel grooves 43 of the third wheel 44 and the fourth wheel 45 and are respectively and fixedly connected to the third wheel 44 and the fourth wheel 45; the winding directions of the first main string 21 and the second main string 22 on the double-layer pulley 40 are opposite to each other.

Specifically, in order to further increase the pulling distance of the second main string 22, so as to increase the pushing distance of the bolt, a double-layer pulley 40 may be further provided, and the first main string 21 and the second main string 22 are respectively wound on the double-layer pulley 40 in opposite directions, that is, when the first main string 21 is pulled, the pulling of the second main string 22 may be achieved through the conversion of the double-layer pulley 40.

As shown in fig. 3 and 10, it is preferable that the support small wheel 50 is rotatably connected to the body and is connected to the body portion between the string pulley 30 and the double-layered pulley 40, the support small wheel 50 is provided with a third wheel shaft 51 and a third wheel groove 52, the third wheel shaft 51 is disposed parallel to the lateral direction of the body, and the third wheel groove 52 is used for supporting the middle portion of the first main string 21 such that the middle portion of the first main string 21 is parallel to one end of the first main string 21 wound on the first wheel groove 42.

Specifically, in order to make the pulling of the first main string 21 smoother, a supporting small wheel 50 may be further provided, so that after the supporting small wheel supports the first main string 21, the first main string 21 may be parallel to the first wheel groove 42 at a corresponding position of the crossbow body 10, so that the first main string 21 may be wound better when the double-layer pulley 40 rotates.

As shown in fig. 4, preferably, the front end 11 of the main body 10 is provided with a bowstring damping compound 13, and the bowstring damping compound 13 is respectively disposed at two sides of the main body 10 and is used for buffering and damping the second main string 22 after firing. Specifically, when the firing assembly 60 fires, the second bowstring is rapidly shortened, and the middle part of the second bowstring can violently bounce towards the front end 11 of the main body 10 under the inertia action, so that the bowstring damping adhesive 13 can be arranged at the front end 11 of the main body 10 to buffer and damp the bouncing of the second bowstring, reduce noise and prolong the service life of the second bowstring.

As shown in fig. 4, preferably, the rear end 12 of the main body 10 is provided with a firing assembly 60, the firing assembly 60 is provided with a linkage trigger 61, a trigger connecting rod 62, a trigger self-locking clamp 63 and a trigger latch hook 65, the linkage trigger 61, the trigger self-locking clamp 63 and the trigger latch hook 65 are respectively connected with the main body 10 in a rotating way, one end of the trigger connecting rod 62 is pivoted with the linkage trigger 61, and the other end is pivoted with the trigger self-locking clamp 63; the trigger self-locking clamping piece 63 is provided with a self-locking spring 64, one end of the self-locking spring 64 is abutted against the main body 10, and the other end is abutted against the trigger self-locking clamping piece 63; the trigger latch hook 65 is provided with an unlocking spring 66, one end of the unlocking spring 66 is abutted against the main body 10, and the other end is abutted against the trigger latch hook 65.

Specifically, to hook the middle of the second bowstring, the trigger latch 65 is preferably disposed at the rear end 12 of the main body 10, and to facilitate the user's pulling of the linkage trigger 61, it is preferable to dispose the linkage trigger 61 at a position approximately corresponding to the palm, i.e., at the proper position of the front end 11 of the main body 10. Thus, the trigger link 62 may be provided to transfer the actuation of the trigger 61 to the trigger self-locking catch 63 of the rear end 12, thereby releasing the trigger lock and thus the second bowstring, causing the second bowstring to drive the bolt to fire at a high speed. In addition, a trigger guard 67 may be provided on the firing assembly 60 to provide for additional safety, and to lock the trigger catch 65 when the crossbow is in the unfired condition. When the trigger is needed to be triggered, the trigger safety fitting 67 can be triggered, and the trigger can be smoothly triggered after corresponding unlocking is carried out.

As shown in fig. 1 to 5, the winding assembly 70 preferably further comprises a winding assembly 70, wherein the winding assembly 70 is provided with a winding draw hook 71, a winding belt 72 and a winding winch 73, the winding draw hook 71 is movably connected to the main body 10, the winding winch 73 is rotatably connected to the rear end 12 of the main body 10, one end of the winding belt 72 is fixedly connected to the winding draw hook 71, the other end of the winding belt 72 is wound and fixedly connected to the winding winch 73, the winding winch 73 is rotated to wind the winding belt 72, and meanwhile, the winding draw hook 71 is driven to move in the direction of the winding winch 73, so that the winding draw hook 71 pulls the second main string 22 to move towards the firing assembly 60, and the trigger lock hook 65 can hook the second main string 22 to complete winding operation. The winding assembly 70 is further provided with a winding rocker 77, a hand gear 75 and a winch gear 74, the winch gear 74 and the winding winch 73 are coaxially arranged and fixedly connected with each other, the hand gear 75 and the winch gear 74 are in meshed connection with each other, the winding rocker 77 and the hand gear 75 are coaxially arranged and fixedly connected with each other, and a rocker arm 78 of the winding rocker 77 is provided with a telescopic structure; the winding assembly 70 is further provided with a gear latch 76, the gear latch 76 being lockable rotatably connected to the main body 10 and adapted to lock the rotational direction of the hand crank gear 75.

Specifically, to facilitate winding operations on the crossbow, a winding assembly 70 may be provided and a winding winch 73 may be used to wind the winding belt 72, thereby improving winding efficiency. Particularly, the winding rocker arm 77 can be used for driving the hand gear 75 to rotate, and meanwhile, the winch gear 74 is driven to rotate, so that the winding winch 73 also rotates synchronously, the winding belt 72 is wound at a high speed, and the winding efficiency is improved. In order to further reduce the winding difficulty, a telescopic rocker arm 78 can be arranged, and the telescopic rocker arm 77 can be contracted when the winding rocker arm is not needed, so that the telescopic rocker arm is convenient to move or store and carry. When the winding rocker arm 77 is required, the rocker arm 78 can be extended, so that the moment of the rocker arm 78 is increased, and the labor is saved. For two months, it will be appreciated that when the second main string 22 has not moved to the trigger latch hook 65 and is hooked by it, the rotational force on the winding capstan 73 needs to be maintained all the time, increasing the difficulty of rotation, so that the gear latch 76 may be provided to lock the hand gear 75, so that the hand gear 75 can only be tightened and rotated, and cannot be rotated reversely to release the winding belt 72. When the winding is completed, the winding belt 72 and the winding hook 71 need to be released, and the gear locking piece 76 can be pushed at this time, so that the hand gear 75 is not locked.

As shown in fig. 1 to 5, the winding assembly 70 is preferably further provided with an auto-retracting winch 80 and an auto-retracting rope 81, the auto-retracting winch 80 is fixedly connected to the main body 10, one end of the auto-retracting rope 81 is wound around and fixedly connected to the auto-retracting winch 80, and the other end is fixedly connected to the winding hook 71; the self-retracting cable 81 is used for pulling the upper chord retractor 71 to move from the rear end 12 of the main body 10 to the front end 11.

Specifically, after the winding is completed, the gear locking member 76 is shifted to unlock the hand gear 75, and then a retraction spring (not shown in the drawing) in the automatic retraction winch 80 can drive the automatic retraction cable 81 to retract and wind into the automatic retraction winch 80, so as to drive the winding draw hook 71 to move towards the front end 11 of the body as well, thereby leaving a space for launching a crossbow.

When the bow is used, the winding assembly 70 is used for winding the bow, namely, the rocker arm 78 is pulled out, the winding rocker arm 77 is rotated to drive the winding winch 73 to rotate, and the winding belt 72 is wound, so that the winding belt 72 drives the winding drag hook 71 to move from the front end 11 to the rear end 12 of the body, and simultaneously drives the second main string 22 to move to the rear end 12. Until the second major chord 22 moves to the trigger catch 65 of the firing assembly 60, the trigger catch 65 is locked. Then the gear locking piece 76 is shifted to unlock the hand gear 75, and then the automatic contraction winch 80 and the automatic contraction cable 81 drive the winding drag hook 71 to move back to the front end 11 of the body, so that the placing space of a bolt can be reserved.

Secondly, the bolt is placed in the space where the body accommodates the bolt, and the tail of the bolt is abutted against the second main string 22 at the trigger lock hook 65, and the bolt can be abutted against the bolt through the trigger lock fitting 68, so that the bolt can be placed on the body relatively stably.

Finally, the handle of the body is grasped, the body is lifted into position for aiming, and then the linkage trigger 61 of the firing assembly 60 is actuated, thereby releasing the trigger catch 65, causing the second major chord 22 to be released. Simultaneously, the potential energy stored by the elastic deformation of the bow 15 is released, so that the second main string 22 is driven to be recovered and wound on the double-layer pulley 40 at a high speed, and the crossbow is driven to be ejected at a high speed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. A multi-round, single-piece crossbow, comprising:

a main body (10) having a certain length and width, one end along the length direction thereof being provided as a rear end (12), the other end thereof being provided as a front end (11), the width direction thereof being provided as a lateral direction, and the direction perpendicular to the length direction and the lateral direction being provided as a longitudinal direction;

the handle assembly (14) is arranged along the longitudinal direction of the main body (10) and is fixedly connected to the lower part of the main body (10);

the bow piece (15) is arranged along the length direction of the main body (10), one end of the bow piece is fixedly connected to the handle assembly (14), the other end of the bow piece is provided with a free end (16), and the free end (16) of the bow piece (15) extends to a certain distance in the direction of the front end (11) of the main body (10) and can swing to change the distance between the bow piece and the main body (10);

a string pulley (30) connected to the free end (16) of the arch piece (15), and provided with a first pulley (31) and a second pulley (32) respectively on both sides of the arch piece (15); and

the bow string assembly (20) is used for pushing out a bolt and comprises opposite two ends, and the two ends of the bow string assembly (20) are respectively and fixedly connected to the first pulley (31) and the second pulley (32).

2. A multi-wheel single-piece crossbow according to claim 1, characterized in that the string pulley (30) is provided with a first axle (33) and a string pulley groove (34), said first axle (33) being arranged parallel to the lateral direction of the body and being rotatably connected to the free end (16) of the segment (15); the string wheel groove (34) is arranged on the periphery of the string pulley (30), and two ends of the bowstring assembly (20) are respectively fixedly connected to the first pulley (31) and the second pulley (32) and bypass the corresponding string wheel groove (34).

3. A multi-wheel single-piece crossbow according to claim 2, characterised in that the string pulley (30) is provided with a string pulley (35) and a reel (37), said string pulley (35) being arranged coaxially with the string pulley (30) and fixedly connected to the first axle (33), said reel (37) being rotatably connected to the string pulley (30) at a point between the first axle (33) and the string pulley groove (34); the string auxiliary wheel (35) is provided with a spiral groove (36), the bowstring assembly (20) is provided with an auxiliary string (23), one end of the auxiliary string (23) is fixedly connected to the main body (10), and the other end of the auxiliary string is sequentially wound around the spiral groove (36) and the reel (37) and is fixedly connected to the string pulley (30).

4. A multi-wheel single-piece crossbow according to claim 1, characterized by further comprising a double-layer pulley (40), said double-layer pulley (40) being provided with a second wheel axle (41), a first wheel groove (42) and a second wheel groove (43), said second wheel axle (41) being arranged parallel to the longitudinal direction of the body and being rotatably connected to the main body (10), said double-layer pulley (40) being fitted over the second wheel axle (41) and rotating around the second wheel axle (41); the bow-string assembly (20) is provided with a first main string (21) and a second main string (22), one end of the first main string (21) is fixedly connected to the string pulley (30), and the other end of the first main string bypasses the first wheel groove (42) and is fixedly connected to the double-layer pulley (40); the double-layer pulley (40) is provided with a third pulley (44) and a fourth pulley (45) respectively at two sides of the main body (10), and two ends of the second main chord (22) respectively bypass a second pulley groove (43) of the third pulley (44) and a second pulley groove (43) of the fourth pulley (45) and are respectively and fixedly connected to the third pulley (44) and the fourth pulley (45); the winding directions of the first main chord (21) and the second main chord (22) on the double-layer pulley (40) are opposite to each other.

5. A multi-wheel single-piece crossbow according to claim 4, further comprising a supporting small wheel (50), said supporting small wheel (50) being rotatably connected to the body and to the body portion between the string pulley (30) and the double-layer pulley (40), said supporting small wheel (50) being provided with a third wheel axle (51) and a third wheel groove (52), said third wheel axle (51) being arranged parallel to the lateral direction of the body, said third wheel groove (52) being intended to support the first main string (21).

6. A multi-wheel single-piece crossbow according to claim 4, characterized in that the front end (11) of said main body (10) is provided with bowstring damping compound (13), said bowstring damping compound (13) being provided on both sides of the main body (10) respectively and cushioning or damping the second main string (22) after firing.

7. The multi-wheel single-piece crossbow according to claim 1, characterized in that a firing assembly (60) is arranged at the rear end (12) of the main body (10), the firing assembly (60) is provided with a linkage trigger (61), a trigger connecting rod (62), a trigger self-locking clamping piece (63) and a trigger locking hook (65), the linkage trigger (61), the trigger self-locking clamping piece (63) and the trigger locking hook (65) are respectively connected with the main body (10) in a rotating way, one end of the trigger connecting rod (62) is pivoted with the linkage trigger (61), and the other end is pivoted with the trigger self-locking clamping piece (63); the trigger self-locking clamping piece (63) is provided with a self-locking spring (64), one end of the self-locking spring (64) is abutted against the main body (10), and the other end of the self-locking spring is abutted against the trigger self-locking clamping piece (63); the trigger latch hook (65) is provided with an unlocking spring (66), one end of the unlocking spring (66) is abutted on the main body (10), and the other end of the unlocking spring is abutted on the trigger latch hook (65).

8. The multi-wheel single-piece crossbow according to claim 1, further comprising a winding assembly (70), wherein the winding assembly (70) is provided with a winding draw hook (71), a winding belt (72) and a winding winch (73), the winding draw hook (71) is movably connected to the main body (10), the winding winch (73) is rotatably connected to the main body (10), one end of the winding belt (72) is fixedly connected to the winding draw hook (71), and the other end of the winding belt is wound on and fixedly connected to the winding winch (73).

9. The multi-wheel single-piece crossbow according to claim 8, wherein said winding assembly (70) is further provided with a winding rocker arm (77), a hand gear (75) and a capstan gear (74), said capstan gear (74) being coaxially disposed with said winding capstan (73) and fixedly connected to each other, said hand gear (75) being engaged with said capstan gear (74) and connected to each other, said winding rocker arm (77) being coaxially disposed with said hand gear (75) and fixedly connected to each other, and a rocker arm lever (78) of said winding rocker arm (77) being provided in a telescopic structure.

10. A multi-wheel single-piece crossbow according to claim 8, characterized in that said winding assembly (70) is further provided with an automatic retraction winch (80) and an automatic retraction cable (81), said automatic retraction winch (80) being fixedly connected to the main body (10), one end of said automatic retraction cable (81) being wound around and fixedly connected to said automatic retraction winch (80) and the other end being fixedly connected to the winding retractor (71).