CN102597688A

CN102597688A - Arrow shooting device

Info

Publication number: CN102597688A
Application number: CN2010800462369A
Authority: CN
Inventors: 朴庆信
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-03
Filing date: 2010-11-23
Publication date: 2012-07-18
Also published as: WO2011068319A3; KR20100133346A; US20120210990A1; WO2011068319A2

Abstract

The present invention relates to an arrow shooting device, and more specifically to, a new arrow shooting device and a draw weight adding method, wherein an arrow is shot not by a compound arrow or a compound crossbow, which have been conventionally used, but by a rubber band and a differential motion cam. The arrow shooting device according to the present invention is formed in the straight simple shape, wherein, as shown in figure 6, the rubber band having superior elasticity is used rather than a limb in the energy storage method thereof and the retraction speed of the rubber band is converted using a first differential motion cam or a second differential motion cam so as to be suitable for shooting the arrow.; In addition, it is possible to additionally hang the rubber band in the state when drawing is finished, or pull the rubber band by means of a winch, so that even people in general may shoot an arrow with a strong draw weight. Therefore, the arrow shooting device is light enough to easily be carried, is easy to manufacture and repair, and has much storage power so that an arrow may be shot far and shot straight. According to the present invention, it is possible to resolve the conventional problems of the complicated structure, heavy weight, noise and shock in the compound arrow and the compound crossbow and reduce the weight for convenience in movement.

Description

The archery device

Technical field

The present invention relates to a kind of archery device, more specifically, the method for additional draw weight after relating to the novel archery device that utilizes rubber band and the archery of differential cam and drawing string.

Background technology

The storage (Energy Input) that is used in the energy of archery is for as shown in Figure 1.

Saving as shown in the curve TB of Fig. 1 of the energy of tradition bow (Traditional Bow).If physique is big, (Powerstroke Length) is elongated for the haul distance of then doing manual work, can be according to training burden, and the tension force of bow (Draw Weight) can grow.

Laminated bow (Compound Bow) is to utilize eccentric cam (Eccentric Cam); Relatively bow stick (Limb) moves; Can possess very long workmanship haul distance; Can obtain fast bow and arrow speed through the recovery speed of conversion bow stick (Limb), when drawing (Drawing) bowstring (String), can store a lot of energy, owing to suitable unwrapping wire (Let-off) technology is easy to aiming.Saving as shown in the curve C B of Fig. 1 of the energy of laminated bow, because than the Zao maximum pull that arrives of tradition bow, so energy stores very effectively, and fast the completion when drawing string is suitable for the unwrapping wire technology of the rapid step-down of draw weight, thereby aims at easily.The workmanship haul distance is different with employed grip handle (Release) according to physique, but is similar to the tradition bow.

Now, develop and using laminated bow is applied to the crossbow of traditional approach and the compound crossbow (Compound Crossbow) made.Up to the present in the known device that can shoot an arrow, do not utilize powder charge or compressed air etc., in the device of only launching with the manpower filling, compound crossbow can store maximum energy emissions.In the storage of the energy of compound crossbow shown in the curve C C of Fig. 1.Different with the tradition bow or the laminated bow that only draw with single armed, owing to use both arms and draw the string auxiliary appliance, therefore can enough more powerful pulling force draw string and said pulling force is seated on the trigger.But, if it is had be equivalent to the workmanship haul distance of laminated bow, then need very large weight and robustness, therefore, the workmanship haul distance of said compound crossbow is shorter than the workmanship haul distance of laminated bow significantly.

The storage of the energy that laminated bow is stored and release (Energy Input and Output) process is shown in the CB of Figure 12.

With reference to the energy dispose procedure,,, the friction opposing causes that energy discharges total amount specific energy storage capacity and lacks 15% approximately because waiting although the form of energy storage process and mirror image (Mirror Image) is shown.

The elasticity of rubber band (Rubber Band) is well used in whole industry, and rubber band lance rifle can be to reach a lot of energy emission lance rifles of 300 joules (Joule).

Differential chain block (Differential Motion Pulley) is used in velocity transformation or tension force conversion as the pulley combination that is combined with the different pulley of diameter.

In the present invention, except employed pulley form, also use the form of cam, therefore be called differential cam (Differential Motion Cam), differential chain block is also contained in differential sliding cam.

As shown in Figure 2, winch (Winch) utilizes winch pawl WP and only combines towards ratchet (Rachet) function of side direction rotation with making hoist gears WG, can twine or untie winch stay cord WC.Winch pulls the device of weight thing as twining rope at cylinder, can utilize the principle of pulley and lever, promotes or pull the article of Heavy Weight with little power.

Summary of the invention

Behind the invention laminated bows in 1969, laminated bow and compound crossbow have been obtained very big development.But laminated bow and compound crossbow have following problem, specify as follows.

Owing to be to draw once emission mode once, therefore can not store a lot of energy.

Utilize the part of the laminated bow of bow stick from the fulcrum (Pivot Point) of handle (Grip) to bow stick; Effect has when drawing string the handle fulcrum as fulcrum; With the lever principle of bow stick end as the force; Also effect has the portion that grip handle (Riser) is connected with bow stick to do to be divided into fulcrum, with the lever principle of bow stick end as the force.Therefore, need firmly to make in the big power of grip handle effect, big thereby weight becomes.

Utilize laminated bow or the crossbow of bow stick roughly to store the energy of about 100 joules (Joule) and be utilized in and send out on the arrow, in contrast to this, use the rubber band of robbing at the rubber lance to store and reach the energy of 300 joules (Joule) and be utilized in emission.But the contraction speed of said rubber band is limited, therefore is not suitable for being used in the bow and arrow emission that needs light weight and fast emission.

The present invention provide a kind of can store a lot of energy earlier after method for transmitting with utilize the archery device of differential cam Fast transforms energy stored.

Method as storing a lot of energy has following two kinds.The first, preparation is a plurality of can draw rubber band and storage power then one by one with the rubber band of manpower pulling; The second, launch after utilizing winch to store a lot of energy, through utilizing the contraction speed of differential cam conversion rubber band, thereby can launch hunt with or sports use bow and arrow.

Do not use bow stick in the present invention, court is used as energy storage unit with the rubber band of equidirectional elongation of archery apparatus main body or contraction, therefore that bow stick is inoperative as the lever principle of lever.So, because the suffered power of archery apparatus main body less than bow and arrow, therefore can be made the archery device of light weight.

Launch bow and arrow owing to the ordinary people also can store a lot of energy, therefore can access bow and arrow speed fast.Have the raising hit rate through bow and arrow fast, increase the success rate of hunting, form the advantage of the trajectory etc. of straight line.

Through rubber band being utilized as the energy storing media, therefore court and the identical directive effect power of archery apparatus main body compare the use bow stick, and main body is rolled over or crooked power reduces significantly, thereby can make light-weighted main body.With this, easy to carry and low preparation cost.

Description of drawings

Fig. 1 is the energy stored profiles ideograph of tradition bow TB, laminated bow CB, compound crossbow CC.

Fig. 2 illustrates the ideograph that winch pawl WP acts on the ratcher function of hoist gears WG.

Fig. 3 be bowstring stopping roller RS top, at the back, side view.

Fig. 4 be according to the side of the differential cam 1DC1 of archery device of the present invention, at the back, following figure.

Fig. 5 be according to the side of the differential wheel 2DC2 of archery device of the present invention, at the back, following figure.

Fig. 6 is according to the side of archery device of the present invention, top figure.

Fig. 7 draws string and the energy storage process that draws behind the string according to archery device of the present invention.

Fig. 8 is the archery process according to archery device of the present invention.

Fig. 9 possesses the side that the archery of winch device is arranged, top figure according to of the present invention.

Figure 10 possesses the energy storage process that the archery of winch device is arranged according to of the present invention.

Figure 11 possesses the archery process that the archery of winch device is arranged according to of the present invention.

Figure 12 is that the energy that the archery device of laminated bow CB, differential cam 1DC1, differential cam 2DC2 is installed stores and exergonic curve model figure.

Figure 13 is that the energy when the archery device that laminated bow CB, differential cam 1DC1, differential cam 2DC2 are installed possesses winch stores and exergonic curve model figure.

Among the figure:

Tradition bow: TB (Traditional Bow); Laminated bow: CB (Compound Bow); Compound crossbow: CC (Compound Crossbow); Inboard cam: IC (Inner Cam); Inboard pulley: IP (Inner Pulley); Outside pulley: OP (Outer Pulley); Differential cam 1:DC1 (Differential Cam1); Differential cam 2:DC2 (Differential Cam2); Rubber band: RB (Rubber Band); Bowstring: S (String); Bowstring supports anchor: SA: (String Anchor); Rubber band supports anchor: BA (Band Anchor); Bow and arrow: Ar (Arrow); Trigger: T (Trigger); Bowstring stopping roller: RS (Roller Stopper); Stop rope: SC (Stopper Cable); Rubber band stay cord: IS (Inner String); Winch stay cord: WC (Winch Cable); Hoist gears: WG (Winch Gear); Winch pawl: (WP: (Winch Pawl); Fixing point: FP (Fixing Point); Lid: Sh (Shield).

The specific embodiment

Below, specify in order to reach the of the present invention preferred formation and the effect of said purpose with reference to accompanying drawing.

Manufacturing bowstring stopping roller RS as shown in Figure 2.

Install like Fig. 6 or Fig. 9, should firmly make central shaft can resist big power, the groove of string process (Groove) can move towards horizontal direction, but can not have mobilely towards vertical direction, so just can make the flight stability of bow and arrow.

Make differential cam 1DC1 like Fig. 3 and 4.

The position of fixing bowstring 2 and the fixing position of rubber band stay cord 1S are set, and fixing means uses and generally uses also harmlessly in the mode of laminated bow, and fixing point FP is not the actual fixed point, but the fixing point on the representation theory.It is cylindric that the both sides of inboard pulley IP keep, and central portion is drawing the state of full string under formation groove (Groove) to tangle rubber band stay cord IS.Determine unwrapping wire by the radius of (Axis) from the groove to the axle, become 30% as if forming the radius of groove to inboard pulley IP, then unwrapping wire becomes 70%.The flying speed of the bowstring of the radius ratio decision contrast rubber band contraction speed of the outside pulley OP and inboard pulley IP, if the radius of pulley OP is 3 times of inboard pulley IP outside making, the distance that then penetrates bow and arrow is three times of rubber band contract by distance.

Rubber band RB has various rugosity and length, can freely select required pulling force.After cutting off two rubber bands,, so make a plurality of to become ring (Loop) shape on the whole with connection rubber band and rubber bands such as bowstrings.

Fig. 6 illustrates to be provided with differential cam 1DC1, bowstring stopping roller RS, and be equipped with rubber band RB, bowstring S, bowstring support anchor SA, rubber band support anchor BA, trigger T, bowstring stopping roller RS, stop rope SC, rubber band stay cord IS etc. state the side and above figure.

The side end of bowstring S is connected the fixing point FP of outside pulley OP, and opposite side also is connected the fixing point FP of outside pulley OP.The length of bowstring S is benchmark when being positioned at the bottom with the central groove of inboard pulley IP, make bowstring S around bowstring support anchor SA and the state that becomes expansion to become required pulling force length.

Rubber band stay cord IS is made as two is fixed on the fixing point FB of rubber band RB with the one of which side, opposite side is fixed on the fixing point FP of inboard pulley IP.Twining into outside pulley OP and be suspended to bowstring stopping roller IS with bowstring S is benchmark, and rubber band stay cord IS is fixed on the fixing point FP of inboard pulley IP so that rubber band RB has suitable initial stage tension force according to length.

The side of rubber band RB is fixed on rubber band and supports anchor BA, and opposite side is connected with rubber band stay cord IS.

As shown in Figure 6, further connect two rubber band RB in the position that is connected with rubber band stay cord IS.The rubber band that will draw is afterwards drawn under the state that does not utilize differential cam, therefore spurs easily than the basic little ability of rubber band tension force of installing.

The side of stop rope SC is fixed on the fixing point FP of main body, and opposite side is connected the part that rubber band RB is connected with rubber band stay cord IS.As shown in Figure 8, the length of stop rope SC and fixing point FB are lax state when drawing full string, when being suspended to bowstring stopping roller RS as bowstring S winding entering outside pulley OP, are fixed on length and position that rubber band RB has suitable initial stage tension force.

Fig. 7 is in the process of accomplishing the further storage power after the basic archery device of installing draws string and draws string.

Shown in second figure of Fig. 7, draw the bowstring S that hangs over bowstring stopping roller RS and be suspended to bowstring and support anchor SA.Draw string string S, the bowstring S that then is wrapped in outside pulley OP unties, and therefore differential cam 1DC1 rotates toward the clockwise direction, and rubber band stay cord IS twines and gets into inboard pulley IP simultaneously, and rubber band is stretched as and twines into like the equal length of the rubber band of inboard pulley.Drawing the string initial stage; Therefore rubber band stay cord IS is fixed on the outside of inboard pulley IP, is wrapped in the flexible part of inboard pulley IP, but when drawing string and finish soon; Rubber band stay cord IS concentrates on central portion, thereby hangs over the groove of the central portion of inboard pulley IP naturally.Before drawing string and finishing, if rubber band stay cord IS hangs over the central groove of inboard pulley IP, 30% before the pulling force that then acts on bowstring S reduces to.That is, can access the effect of unwrapping wire 70%, hang over bowstring at this state unbrace S and support anchor SA, therefore, have the power that acts on trigger and reduce significantly, and not only the durability to trigger be favourable, and help the effect of hit rate.

Below for drawing the energy storage process behind the string.Shown in the 3rd figure of Fig. 7, be suspended to bowstring with one among the rubber band RB that stretches and support anchor SA.Draw remaining rubber band RB then and also hang over bowstring support anchor BA, then become the 4th figure like Fig. 7.

Fig. 8 is after drawing string, and after accomplishing the energy storage process, the process of launching bow and arrow by bow and arrow aiming back triggering pulling at bowstring S.

Triggering pulling T and bowstring support anchor SA and slip, and then rubber band shrinks, and simultaneously, differential cam twines the rubber band stay cord IS that gets into inboard pulley IP and unties towards rotation counterclockwise when drawing string, and bowstring S twines and gets into outside pulley OP.Rotation isodose when the radius of outside pulley OP being set as 3 times of radius of inboard pulley IP, then the displacement of bowstring S is 3 times of displacement of rubber band stay cord IS, therefore according to this principle, the flying speed of bow and arrow is three times of contraction speed of rubber band.

1. differential cam 1DC1 that further draws and rubber band RB and tangle.

2. differential cam 2DC2 that further draws and rubber band RB and tangle.

If use differential cam 1DC1; Then shown in figure 12; Energy storage and energy discharge the appearance attitude can access the unwrapping wire effect with because the effect of the pulling force of the straight line increase that the further rubber band of installation causes after drawing string and finishing; But demonstrate and similar energy storage of tradition bow and exergonic curve state, thereby compare laminated bow, efficient can descend.For as laminated bow storage power and releasing energy effectively, should design inboard cam with said method differently.

Fig. 5 be the side of differential cam 2DC2, at the back, following figure.It is little that inboard cam is arranged to the big and inboard radius of its outer radius, forms straight-line groove and make radius and sharply dwindle at central portion, then shown in the DC2 of Figure 12, can access as energy and store the identical effect of laminated bow with unwrapping wire etc.And the effect that the pulling force straight line at the unwrapping wire state that acquisition is caused by the extra rubber band of installation increases is drawn the curve emission as the form of laminated bow during emission.Basic installation method when using differential cam 2DC2 is identical when using differential cam 1DC1.

3. the quantity of rubber band RB

Even the basic rubber band RB that installs is bigger than the extra rubber band RB tension force that draws, but owing to utilize differential cam 1DC1 or differential cam 2DC2 to draw, thereby can spur easily.And the extra rubber band RB that draws is owing to drawing without differential cam 1DC1 or differential cam 2DC2, therefore than the basic little ability stretchy of installing of rubber band tension force.Though do not have regulation to want tension force and the quantity of the extra rubber band RB that draws, be preferably 2-4.

4. the utilization of winch

Fig. 9 utilizes winch to draw the side and the top figure of the archery device of string.The method that differential cam 1DC1, bowstring S, bowstring stopping roller RS, stop rope SC, rubber band stay cord IS are installed is as above-mentioned method.Distinctive points is, uses the big rubber band of tension force basically, has the lid Sh that covers rubber band, and the side of rubber band RB is connected with winch stay cord WC.Therefore do not have the extra function of drawing rubber band RB and tangling, the rubber band that tension force is the big rubber band that is elected to be basic installation is installed.If the lid Sh that covers rubber band is arranged, support with a hand easily when then aiming at and hold.The side of rubber band FR is connected with winch stay cord WC, rotates winch and twine WH pulling winch stay cord WC, even the rubber band that then tension force is big also can spur easily.

As shown in Figure 2, be provided with winch pawl WP and carry out the function of ratchet (Rachet) at winch, promptly use the winch pawl WP also can be towards clockwise or be rotated counterclockwise.

Figure 10 be provided with winch the archery device draw the string process.Push winch pawl WP and make hoist gears WG towards drawing string string S after the direction rotation between up time, then rubber band WC does not stretch, and the winch stay cord WC that is wrapped in the winch cylinder simultaneously unties, and therefore can under the low-down state of pulling force, draw string.Drawing before string accomplishes, if rubber band stay cord IS hangs over the central groove of inboard pulley IP, 30% before the tension force that then acts on bowstring S reduces to.That is, can access the effect of unwrapping wire 70%, hang over bowstring at this state unbrace S and support anchor SA, the power that therefore acts on trigger reduces significantly and has not only that the durability to trigger is favourable, and helps the effect of hit rate.So draw string string S and be suspended to bowstring to the unwrapping wire position and support anchor SA, push winch pawl WP in the opposite direction then and can make only rotation in the opposite direction of hoist gears WG, utilize winch WH rotary draw work gear WG in the opposite direction.Along with the rotation of winch cylinder, winch stay cord WC twines and gets into the winch cylinder, and rubber band stretches, and increases the pulling force of the bowstring S of unwrapping wire state simultaneously.

Figure 11 is the archery process that is provided with the archery device of winch.By bow and arrow Ar, support lid on the other hand and after another holds the handle aiming at the bowstring S that draws the archery device that string accomplishes, triggering pulling T emission.Bowstring supports anchor SA and slips, and then rubber band shrinks, and draws rubber band stay cord IS simultaneously.When drawing string, twine to get into and untie at the rubber band stay cord IS of inboard pulley IP, simultaneously, differential cam 1DC1 is towards rotation counterclockwise.Bowstring S twines into outside pulley OP and launches bow and arrow with the length that is equivalent to rotation amount.Rotation isodose when the radius of outside pulley OP being set as 3 times of radius of inboard pulley IP, then the displacement of bowstring S is 3 times of displacement of rubber band stay cord IS, therefore according to this principle, the flying speed of bow and arrow is three times of contraction speed of rubber band.

Can replace differential cam 1DC1 to use differential cam 2DC2.The groove of the inboard cam IC of difference in change moving cam 2DC2 equally diversely, thus shown in the differential cam 2DC2 of Figure 12, carry out energy effectively as laminated bow and store and the appearance attitude that discharges.

Figure 13 is the ideograph that the energy when utilizing winch stores and discharges.

Because rubber band does not stretch, so pulling force is very little when drawing string.

Draw that string finishes and under the unwrapping wire state rotation winch and stretch rubber band, then can vertical lifting at the pulling force of unwrapping wire state.

Triggering pulling emission, the emitter that then has differential cam 1DC1 is got rid of unwrapping wire, then draws as the curve of the appearance attitude of tradition bow and releases energy, and the archery device with differential cam 2DC2 is drawn the curve that is similar to laminated bow and is released energy.

5. utilize the differential cam of differential cam 1DC1 or differential cam 2DC2 form, do not having grip handle manufacturing capable of using under the state of trigger gear can launch the archery device of bow and arrow.

In the main body of the handle that possesses simple shape differential cam 1DC1 or differential cam 2DC2, bowstring stopping roller RS, rubber band RB, bowstring S are set, rubber band supports anchor BA.

Be not fixed at trigger and use grip handle and differential cam 2DC2 under the state of main body, then energy stores with the energy release profiles similarly, so it is similar with laminated bow to draw sensation or the unwrapping wire effect etc. of string, but the position difference of fulcrum and performance descends to some extent.

6. when making the little emitter of main body, can replace rubber band to use the metallicity spring.

Utilize possibility in the industry

The ratio of radius of radius and inboard cam of outside pulley of differential cam 1DC1 or differential cam 2DC2 that is used to strengthen the contraction speed of rubber band through adjusting; Thereby can access required bow and arrow speed; Utilize the method for additional draw weight; Can improve pulling force, thereby bow and arrow also can be easily takes place with hundreds of pounds pulling force in common people.

Replace bow stick to use rubber band or the big spring of tension force to come storage power, thus easy to carry and manufacturing cost is cheap through linear simple structure and lightweight etc.

Compare existing laminated bow and compound crossbow, obviously reduced by the part of air opposing, thereby reduce noise and vibration during emission.

Can replace laminated bow and compound crossbow in sports, hunting etc. through said advantage, rob if be applicable to the rubber lance, though then rob for a short time than existing rubber lance, the rubber lance that can make more than releasing energy is robbed.

Claims

One kind the archery device, the said archery device that utilizes rubber band (RB) comprises differential cam 2 (DC2), said differential cam 2 (DC2) comprises: pair of outside pulley (OP) possesses the groove that holds bowstring (S); Inboard cam (IC); The rubber band stay cord (IS) that is connected with said rubber band (RB) is fixed on the fixing point (FP) in the outside; Be formed with said rubber band stay cord (IS) symmetrically at said inboard cam and inwards twine the spiral groove that radius reduces when advancing, and said groove meets and forms the minimum linear groove of radius at the central portion of said inboard cam.
One kind the archery device, the said archery device that utilizes rubber band (RB) comprises differential cam 1 (DC1), said differential cam 1 (DC) comprises: pair of outside pulley (OP) possesses the groove that holds bowstring (S); Inboard pulley (IP); The rubber band stay cord (IS) that is connected with said rubber band (RB) is fixed on the fixing point (FP) in the outside; Said rubber band stay cord (IS) passes through the cylindrical portions may in the described outside and inwards twines, thereby passes through the groove of rhombus at the central portion of said inboard cam.
3. archery device according to claim 1 and 2 wherein, possesses trigger gear (T), draw string string (S) after, add rubber band (RB) and move rubber band to and support and said rubber band to be suspended to said rubber band behind the anchor (BA) and to support on the anchor, thereby strengthen draw weight.
4. archery device according to claim 1 and 2 wherein, comprises: trigger gear (T); Winch, draw string string (S) after, rotate winch and draw the winch stay cord (WC) that is connected with rubber band (RB) to (WH), then, (WP) stops the rotation with winch pawl.
5. archery device according to claim 1 and 2; Wherein, possesses a pair of bowstring stopping roller (RS), when emission back bowstring moves; Allow said bowstring (S) to move towards horizontal direction; Move towards vertical direction but limit said bowstring (S), after the emission, said bowstring (S) is suspended to said bowstring stopping roller and makes said bowstring stop.
6. archery device according to claim 1 and 2; Wherein, possess stop rope (SC), the one of which side is connected the position that rubber band stay cord (IS) is connected with said rubber band (RB); Opposite side is connected the fixing point (FB) of main body, thereby the contraction of rubber band (RB) is stopped.