CN210802218U

CN210802218U - Novel portable automatic repeating crossbow

Info

Publication number: CN210802218U
Application number: CN201921928377.8U
Authority: CN
Inventors: 周拓宇; 刘三渊
Original assignee: Nanchang Hangkong University
Current assignee: Nanchang Hangkong University
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-19
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a novel portable automatic repeating crossbow, which comprises a handle, a machine body and a bow, wherein the handle is arranged at one end of the machine body, and the bow can be arranged at the other end of the machine body in an opening and closing way; the automatic arrow loading device also comprises a winding mechanism, an automatic arrow loading mechanism and an arrow supplying box; the winding mechanism comprises a trigger, a battery, a motor, a worm gear, a chain and two chain wheels arranged at two ends inside the machine body. The utility model discloses combine mechatronic technique and compound crossbow, with the motor drive chain, drive novel year arrow mechanism and crossbow arm folding mechanism synchronous operation, make it reach full-automatic continuous shooting and extend folding purpose fast, strengthened the flexibility of current crossbow utensil, portability and the nature controlled.

Description

Novel portable automatic repeating crossbow

Technical Field

The utility model relates to a crossbow utensil technical field, concretely relates to novel portable automatic running fire crossbow.

Background

As an improved modern crossbow tool, the compound crossbow is widely used in military affairs, counter terrorism, hunting and shooting sports by the advantages of high precision, long shooting range, low noise, capability of using various arrows and the like, but the development of the compound crossbow is greatly limited by the reasons of overlarge volume, inconvenience in carrying, slow shooting speed, labor waste in stringing and the like.

Disclosure of Invention

The utility model discloses the problem that will solve is: the utility model provides a novel portable automatic repeating crossbow combines electromechanical integration technique and compound crossbow, uses motor drive chain, drives novel year arrow mechanism and crossbow arm folding mechanism synchronous operation, makes it reach full-automatic consecutive shooting and extend folding purpose fast, has strengthened the flexibility of current crossbow utensil, portability and the nature controlled.

The utility model discloses a solve the technical scheme that above-mentioned problem provided and do: a novel portable automatic repeating crossbow comprises a handle, a machine body and a bow, wherein the handle is arranged at one end of the machine body, and the bow can be arranged at the other end of the machine body in an opening and closing manner; the automatic arrow loading device also comprises a winding mechanism, an automatic arrow loading mechanism and an arrow supplying box; the stringing mechanism comprises a trigger, a battery, a motor, a worm gear, a chain and two chain wheels arranged at two ends in the machine body, wherein the motor is arranged in the handle; automatic carry arrow mechanism and include V-arrangement slider, pivot backing sheet, pendulum piece, pivot, spring clamp, pivot spring, separation blade and axle sleeve, the activity of V-arrangement slider sets up in the V-arrangement spout on the fuselage, the one end and the V-arrangement slider of pivot backing sheet are connected, the pendulum piece rotates with the other end of pivot backing sheet to be connected, the one end and the iron hook cooperation of pendulum piece, the pivot sets up the upper end at the pivot backing sheet, axle sleeve surface fretwork has the helicla flute, the axle sleeve cover is established in the one end of pivot, the spring clamp sets up in the pivot and cooperates with the helicla flute, the separation blade sets up on the fuselage and is located the upper end of pendulum piece and cooperates with the pendulum piece, the pivot spring housing is established the one end of keeping away from the spring clamp in the pivot.

Preferably, the bow includes crossbow piece folding mechanism and two crossbow pieces, crossbow piece folding mechanism includes ejector pad, lock handle, two pull rods, a fixed steel sheet, two hinge seats and two hinges even, the ejector pad activity sets up in the fuselage, two hinge seat activity sets up the both sides at the fuselage, the lock handle rotates to set up two between the hinge seat, two the one end and the ejector pad of pull rod are connected, two the one end of bow piece is connected with one side of pull rod and steel sheet respectively, the opposite side and the hinge connection of two fixed steel sheets, two the hinge sets up the both sides at the fuselage respectively, the lock handle rotates under the effect of the iron hook on the chain and drives the hinge seat and slide on the fuselage simultaneously.

Preferably, the motor is a high-power direct current motor.

Compared with the prior art, the utility model has the advantages that: the utility model discloses use the chain to drive all mechanisms operation, can be with automatic winding up, automatic carry the arrow, open the function integration of crossbow arm together, the chain rotates half a circle at every turn, and first chain drive winding up, and the arrow is carried to second chain, and both move simultaneously and do not influence each other, have guaranteed the cooperativity of each mechanism promptly, make the power of this system reach the maximize utilization again, and the theoretical speed of repeating can reach an arrow per second, and reduce cost still, the operation is steady reliable, and control is simple, advantages such as convenient operation; this patent is multiple functional, and is high to the integration degree of each mechanism, uses the big compact worm gear transmission again of drive ratio, very big improvement space utilization, compact structure, convenient to carry.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the present invention at A in FIG. 1;

fig. 3 is a perspective view of the present invention in another direction;

FIG. 4 is a schematic view of a spindle and spring clip of the present invention;

fig. 5 is an exploded view of the prod folding mechanism of the present invention;

the attached drawings are marked as follows: 1. the device comprises a body, 2, a battery, 3, a chain wheel, 4, an iron hook, 5, a chain, 6, a worm gear, 7, a trigger, 8, a motor, 9, a handle, 10, a pull rod, 11, a spiral groove, 12, a shaft sleeve, 13, a spring clamp, 14, a swinging sheet, 15, a blocking sheet, 16, a rotating shaft supporting sheet, 17, a rotating shaft, 18, a V-shaped sliding groove, 19, a rotating shaft spring, 20, a bolt, 21, a fixed steel sheet, 22, a hinge, 23, a bow sheet, 24, a sliding rail, 25, a hinge seat, 26, a lock handle, 27 and a push block.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

The specific embodiment of the utility model is shown in fig. 1 to 5, a novel portable automatic repeating crossbow, which comprises a handle 9, a machine body 1 and a bow, wherein the handle 9 is arranged at one end of the machine body 1, and the bow can be arranged at the other end of the machine body 1 in an opening and closing way; the automatic arrow loading device also comprises a winding mechanism, an automatic arrow loading mechanism and an arrow supplying box; the winding mechanism comprises a trigger 7, a battery 2, a motor 8, a worm gear 6, a chain 5 and two chain wheels 3 arranged at two ends in the machine body 1, wherein the motor 8 is arranged in a handle 9, the battery 2 is arranged on the machine body 1, the battery 2 is electrically connected with the motor 8, the trigger 7 is movably arranged on the handle 9, the trigger 7 controls the motor 8 to rotate, the motor 8 is in transmission connection with the worm gear 6, the chain 5 is arranged on the two chain wheels 3, and the chain 5 is equidistantly provided with two iron hooks 4; automatic carry arrow mechanism and include V-arrangement slider, pivot backing sheet 16, pendulum piece 14, pivot 17, spring clamp 13, pivot spring 19, separation blade 15 and axle sleeve 12, the activity of V-arrangement slider sets up in V-arrangement spout 18 on fuselage 1, the one end and the V-arrangement slider of pivot backing sheet 16 are connected, pendulum piece 14 rotates with the other end of pivot backing sheet 16 to be connected, the one end and the cooperation of iron hook 4 of pendulum piece 14, pivot 17 sets up the upper end at pivot backing sheet 16, axle sleeve 12 surface fretwork has helicla flute 11, axle sleeve 12 cover is established in the one end of pivot 17, spring clamp 13 sets up on pivot 17 and cooperates with helicla flute 11, separation blade 15 sets up and lies in on fuselage 1 the upper end of pendulum piece 14 and cooperates with pendulum piece 14, pivot spring 19 cover is established and is kept away from the one end of spring clamp 13 in pivot 17.

Further, the bow includes crossbow piece folding mechanism and two crossbow pieces 23, crossbow piece folding mechanism includes ejector pad 27, lock handle 26, two pull rods 10, even fixed steel sheet 21, two hinge seats 25 and two hinges 22, ejector pad 27 activity sets up in the fuselage 1, two hinge seat 25 activity sets up in the both sides of fuselage 1, lock handle 26 rotates and sets up two between the hinge seat 25, two the one end and the ejector pad 27 of pull rod 10 are connected, two the one end of bow piece 23 is connected with one side of pull rod 10 and steel sheet respectively, and the opposite side and the hinge 22 of two fixed steel sheets 21 are connected, two hinge 22 sets up the both sides at fuselage 1 respectively, lock handle 26 rotates under the effect of iron hook 4 on chain 5 and drives hinge seat 25 and slide on fuselage 1 simultaneously.

Further, the motor 8 is a high-power direct current motor.

The specific using process is as follows:

the invention is drawn out from the containing bag by holding the handle or hung on the waist, a trigger is immediately buckled, and then the target can be aimed to prepare for shooting. Before the first trigger is pulled, the crossbow is in a folded state; after the trigger is pulled once, the motor is electrified to continuously operate, the speed is reduced through the worm gear and the worm, the torque is increased, the worm gear rotates to drive the chain wheel, and then the chain is driven to operate.

Two iron hooks are arranged on the chain at equal intervals, one iron hook is bound to move downwards and forwards when the iron hooks rotate along with the chain, and the other iron hook is bound to move backwards on the other iron hook. The iron hook below the iron hook can be abutted against a lock handle in the crossbow folding mechanism when the iron hook travels to the rear third of the stroke, and the lock handle is pushed to the tail end. Because the lock handle is hinged and fixed between the two hinge seats of the folding mechanism, the hinge seats can also be pushed to the tail end, and then the iron hook rotates upwards along with the chain through the front chain wheel and is separated from the lock handle. Meanwhile, the lock handle can be rotated upwards by an angle due to the upward force of the iron hook, so that the front end of the machine body can be propped against the front end of the machine body, and the hinge seat cannot return to the original position.

The chain continuously drives the iron hook to move back, and the iron hook moves to the crossbow string position to hook the crossbow string and is pulled to the maximum rear stroke position. At this moment, in the firing mode, the maximum crossbow string is touched by the limit switch, the motor stops, and the crossbow machine is in a state of waiting for firing. Because the worm wheel has the function of preventing reversion, the crossbow string is always in a pull-open state. Meanwhile, two iron hooks are arranged on the chain, when the upper chain of the iron hook pulls the string backwards, the lower chain of the iron hook moves forwards and is in contact with the automatic arrow carrying mechanism in the front third of the stroke to push the swinging piece on the V-shaped sliding block forwards, and when the sliding block moves to the maximum stroke, the swinging piece rotates downwards at a small angle under the guide of the blocking piece and the vertical downward force component to be separated from the iron hook. The slide block drives the rotating shaft to move forwards together in the advancing process, but the rotating shaft can rotate 180 degrees under the guiding action of the sleeve, so that the spring clamp on the rotating shaft is clamped on an arrow in the arrow box.

When the swinging piece is separated from the iron hook, the iron hook continues to move forward under the driving of the chain, the swinging piece is pushed back to the original position by the spring on the rotating shaft, and meanwhile, the rotating shaft and the V-shaped sliding block are also pushed back to the original position and drive the clamped arrow to be placed on the launching track.

The above processes can be completed within a half cycle of the chain operation, namely about 1.5 seconds after the first trigger is pulled (wherein 1 second is the theoretical continuous shooting speed, 0.5 second is the single-shot starting delay and a certain deceleration is generated when the crossbow is unfolded), and after the aiming is finished, the trigger is pulled again, and the top plate connected with the trigger can eject the crossbow string from the iron hook to eject the arrow. Meanwhile, the power supply of the motor can still be turned on by pulling the trigger for the second time, the motor is driven to continuously operate, and the processes are repeated by all the mechanisms.

If the firing mode is the continuous firing mode, the trigger is only required to be pulled and not released, so that the strings are naturally ejected by the always-tilted ejector iron when the iron hook straightens the maximum position, and the arrow can be continuously ejected as long as the motor is operated all the time until all the arrow in the arrow box is ejected.

Wherein, the arrow supplying box mainly comprises a shell and an arrow ejector. The arrow pushing device is provided with two arrows which are arranged side by side and consists of a support frame, a winding shaft and a torsion spring. Fine wires are wound on two sides of the winding shaft, and the other end of each fine wire is connected with the upper end face of the left supporting plate; meanwhile, the winding shaft is sleeved with two torsion springs, one end of each torsion spring is fixed on the winding shaft, and the other end of each torsion spring is fixed on the supporting frame. When the arrow is put in, the arrow pushing device is pushed to the lowest part by the arrow, the thin wire pulls the winding shaft to rotate, and the torsion spring stores mechanical energy. When the automatic arrow carrying mechanism takes out one arrow, mechanical energy is released, the support frame cannot rotate in the arrow box and only can rotate around the winding shaft, and the arrow pushing device is pulled to move upwards to push the rest arrow to the outlet.

The utility model has the advantages that: the utility model discloses use the chain to drive all mechanisms operation, can be with automatic winding up, automatic carry the arrow, open the function integration of crossbow arm together, the chain rotates half a circle at every turn, and first chain drive winding up, and the arrow is carried to second chain, and both move simultaneously and do not influence each other, have guaranteed the cooperativity of each mechanism promptly, make the power of this system reach the maximize utilization again, and the theoretical speed of repeating can reach an arrow per second, and reduce cost still, the operation is steady reliable, and control is simple, advantages such as convenient operation; this patent is multiple functional, and is high to the integration degree of each mechanism, uses the big compact worm gear transmission again of drive ratio, very big improvement space utilization, compact structure, convenient to carry.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. A novel portable automatic repeating crossbow comprises a handle (9), a machine body (1) and a bow, wherein the handle (9) is arranged at one end of the machine body (1), and the bow can be arranged at the other end of the machine body (1) in an opening and closing manner; the method is characterized in that: the automatic arrow loading device also comprises a winding mechanism, an automatic arrow loading mechanism and an arrow supplying box; the stringing mechanism comprises a trigger (7), a battery (2), a motor (8), a worm gear (6), a chain (5) and two chain wheels (3) arranged at two ends of the interior of a machine body (1), the motor (8) is arranged inside a handle (9), the battery (2) is arranged on the machine body (1), the battery (2) is electrically connected with the motor (8), the trigger (7) is movably arranged on the handle (9), the trigger (7) controls the motor (8) to rotate, the motor (8) is in transmission connection with the worm gear (6), the chain (5) is arranged on the two chain wheels (3), and two iron hooks (4) are equidistantly arranged on the chain (5); the automatic arrow carrying mechanism comprises a V-shaped sliding block, a rotating shaft supporting piece (16), a swinging piece (14), a rotating shaft (17), a spring clamp (13), a rotating shaft spring (19), a blocking piece (15) and a shaft sleeve (12), wherein the V-shaped sliding block is movably arranged in a V-shaped sliding groove (18) on the machine body (1), one end of the rotating shaft supporting piece (16) is connected with the V-shaped sliding block, the swinging piece (14) is rotatably connected with the other end of the rotating shaft supporting piece (16), one end of the swinging piece (14) is matched with an iron hook (4), the rotating shaft (17) is arranged at the upper end of the rotating shaft supporting piece (16), the shaft sleeve (12) is hollowed in the surface to form a spiral groove (11), the shaft sleeve (12) is sleeved at one end of the rotating shaft (17), the spring clamp (13) is arranged on the rotating shaft (17) and matched with the spiral groove (11), the blocking piece (15) is arranged on the machine body (1) and is positioned at the upper end of the, the rotating shaft spring (19) is sleeved at one end of the rotating shaft (17) far away from the spring clamp (13).

2. The novel portable automatic repeating crossbow of claim 1, wherein: bow includes crossbow piece folding mechanism and two crossbow pieces (23), crossbow piece folding mechanism includes ejector pad (27), lock handle (26), two pull rods (10), even fixed steel sheet (21), two hinge seats (25) and two hinges (22), ejector pad (27) activity sets up in fuselage (1), two hinge seat (25) activity sets up the both sides in fuselage (1), lock handle (26) rotate to set up two between hinge seat (25), two the one end and the ejector pad (27) of pull rod (10) are connected, two the one end of bow piece (23) is connected with one side of pull rod (10) and steel sheet respectively, and the opposite side and the hinge (22) of two fixed steel sheets (21) are connected, two hinge (22) set up the both sides in fuselage (1) respectively, lock handle (26) rotate under the effect of iron hook (4) on chain (5) and drive hinge seat (25) and slide on fuselage (1) simultaneously.

3. A novel portable automatic repeating crossbow according to claim 1 or 2, wherein: the motor (8) is a high-power direct current motor.