Novel bow string pulling swing arm and novel bow

Abstract

The string pulling swing arm comprises a bowstring guiding end and a bow body connecting end, the bowstring guiding end and the bow body connecting end are located at the outer end and the inner end of the string pulling swing arm respectively, the bowstring guiding end is used for penetrating and guiding a bowstring, and the bow body connecting end is used for being connected with a bow handle. A connecting part is arranged on the string pulling swing arm and is positioned between the bowstring guide end and the bow body connecting end; the novel bow handle comprises a bow body, an elastic telescopic piece, a bowstring and a string pulling swing arm, the elastic telescopic piece is arranged on the bow body and used for pulling the string pulling swing arm to reset, and in the resetting process of the string pulling swing arm, the bowstring is pulled to eject a bow and an arrow. Through the combination of the string pulling swing arm and the elastic telescopic piece, the damping structure of the bow handle can be effectively simplified, the rebound vibration of the bow handle can be effectively reduced, and therefore the use comfort of the bow is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bow manufacturing, in particular to a new string-pulling swing arm for a bow and a new bow. Background Art

[0002] Existing bows and arrows generally consist of a bow and arrows. The bow generally consists of a bow handle, bow arms and a bowstring. Bow arms are arranged at both ends of the bow handle to form a bow body. Before shooting an arrow with the bowstring, the bowstring is first pulled forcefully to deform the bow arms. When the bowstring is released, the bowstring is quickly pulled during the process of the bow arms rebounding and deforming back to their original positions, thus realizing the shooting of the arrow. Due to the large rebounding force of the bow arms, the vibration of the bow handle is relatively large after the arrow is shot. As a result, when an archer uses the bow and arrow frequently, the arm is prone to soreness, and even the palm may be abraded. In the prior art, in order to reduce the rebounding vibration of the bow handle, a weight damping rod is often installed on the bow handle and damping rubber blocks are bonded to the upper and lower bow pieces (bow arms) for damping. Using the above method for damping, the damping structure of the bow handle is relatively complex, and at the same time, the manufacturing cost of the bow is also high. Therefore, how to simplify the damping mechanism of the bow handle and reduce the vibration of the bow handle is an urgent problem to be solved. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a new string-pulling swing arm for a bow and a new bow. By using the combination of the string-pulling swing arm and the elastic telescopic member, the damping structure of the bow handle can be effectively simplified and the rebounding vibration of the bow handle can be reduced, thereby improving the comfort of using the bow.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a new string-pulling swing arm for a bow, which includes a bowstring guiding end and a bow body connecting end. The bowstring guiding end and the bow body connecting end are respectively located at the outer end and the inner end of the string-pulling swing arm. The bowstring guiding end is used to realize the threading and guiding of the bowstring, and the bow body connecting end is used to realize the connection with the bow body. A connecting portion is arranged on the string-pulling swing arm, and the connecting portion is located between the bowstring guiding end and the bow body connecting end.

[0005] Preferably, the string-pulling swing arm includes a first connecting arm and a second connecting arm. One end of the first connecting arm is hinged to one end of the second connecting arm. The end of the first connecting arm far from the second connecting arm is the bowstring guiding end, and the end of the second connecting arm far from the first connecting arm is the bow body connecting end. The connecting portion is arranged on the first connecting arm and is adjacent to the hinge joint of the first connecting arm and the second connecting arm.

[0006] Further, the bowstring guiding end includes a first guiding pulley, and the first guiding pulley is rotatably arranged on the first connecting arm.

[0007] Further, the connecting portion includes two hanging rods, which are symmetrically and fixedly arranged on the front side wall and the rear side wall of the first connecting arm in the front and rear directions.

[0008] Further, the second connecting arm includes two articulated connecting plates. A first articulated shaft is arranged at the end where the first connecting arm is connected to the second connecting arm. One end of the articulated connecting plate is articulated and connected to the corresponding shaft end of the first articulated shaft.

[0009] Further, two first gears symmetrically distributed in the front and rear directions are arranged on the first connecting arm. The two first gears are coaxially distributed with the first articulated shaft. The first connecting arm and the two first gears can rotate synchronously. A second articulated shaft is arranged at the ends of the two articulated connecting plates away from the first articulated shaft. Two second gears are arranged on the second articulated shaft. The second gears are meshed with the corresponding first gears. The articulated connecting plate can rotate around the axis of the second articulated shaft relative to the second gear.

[0010] A new type of bow includes the above-mentioned string-pulling swing arm for the new type of bow. This new type of bow further includes a bow body, an elastic telescopic member, and a bowstring. Two fixed struts distributed vertically are arranged on the left side of the bow body. An inclined strut inclined outward is arranged on the right side of each fixed strut. A second guiding pulley is arranged at the right end of each inclined strut. A string-pulling swing arm for the new type of bow is arranged between the fixed strut and the inclined strut. A bowstring fixing seat located on the right side of the corresponding string-pulling swing arm for the new type of bow is arranged on the inclined strut. The two second gears on each group of string-pulling swing arms for the new type of bow are arranged on the bow body in the front and rear directions, and the second gears cannot rotate freely relative to the bow body. The free end of the bowstring sequentially bypasses the corresponding second guiding pulley and the first guiding pulley and is fixedly connected to the corresponding bowstring fixing seat. An elastic telescopic member is arranged between the left end of the fixed strut and the connecting portion.

[0011] Further, the elastic telescopic member includes a clamping seat and a rubber hose. The clamping seat is articulated on the left end of the fixed strut. The two free ends of the rubber hose are clamped and fixed on the clamping seat. The middle part of the rubber hose is connected to the connecting portion.

[0012] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and convenient for processing and manufacturing; the rubber hose has strong flexibility. Therefore, during the process of being pulled and rebounding to the reset position, it has a low vibration transmission ability. At the same time, the rubber hose itself also has good shock absorption ability. Therefore, during the process of using the rubber hose to pull the first connecting arm to swing leftward, the vibration generated on the bow body is small, thus greatly reducing the vibration of the bow body. Therefore, by combining the rubber hose with the string-pulling swing arm, on the basis of achieving less vibration of the bow handle, at the same time, it is convenient to simplify the structure of the bow body and reduce its processing and manufacturing cost; when the string-pulling swing arm is composed of the first connecting arm and the second connecting arm hinged together, when pulling the first connecting arm backward or when the first connecting arm swings forward, after the second connecting arm stops moving due to the blocking and limiting of the bow body, the first connecting arm can still swing to a certain extent relative to the second connecting arm, thereby increasing the forward and backward movement stroke of the first connecting arm. The swing stroke of the first connecting arm increases, so that the pulling force of the rubber hose on the first connecting arm and the time of applying the pulling action can be increased. The pulling force on the first connecting arm is large and the time of applying the force is long, so that the effect of the first connecting arm pulling the bowstring can be greatly improved, and ultimately the initial speed of the arrow after leaving the bowstring can be increased, and thus the shooting range of the arrow can be improved; when using the bowstring to pull the first connecting arm backward, the first guiding pulley plays the role of a movable pulley, thereby reducing the pulling force of manually pulling the bowstring and making it easy to pull the bowstring open; further, since the force arm between the first guiding pulley and the center point of the rightward swing of the first connecting arm is greater than the force arm between the connecting part and the center point of the rightward swing of the first connecting arm, when using the bowstring to pull back the first connecting swing arm, the principle of leverage is used to achieve labor-saving in pulling back the bowstring; the first gear meshes with the second gear, and the first gear is fixedly connected to the first connecting arm. Therefore, when using the swing of the first connecting arm to pull the bowstring, by using the cooperation relationship between the first gear and the second gear, the swing stability of the first connecting arm is improved, and then the pulling stability of the bowstring is improved. The bowstring is pulled stably, which is conducive to realizing the stable shooting of the arrow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some preferred embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural view of the first embodiment of the string-pulling swing arm in the present utility model;

[0015] Figure 2 It is a projection view of the first embodiment of the string-pulling swing arm of the present utility model;

[0016] Figure 3 It is a side projection view of the first embodiment of the string-pulling swing arm in the present utility model;

[0017] Figure 4 It is the front view of the overall structure of the new bow in the present utility model;

[0018] Figure 5 It is the side view of the overall structure of the new bow in the present utility model;

[0019] Figure 6 It is a schematic diagram of the distribution of the elastic telescopic member on the bow body;

[0020] In the figure: 11 is the bowstring guiding end, 111 is the first guiding pulley, 12 is the bow body connecting end, 121 is the second hinge shaft, 122 is the second gear, 13 is the connecting portion, 131 is the hanging rod, 14 is the first connecting arm, 141 is the first gear, 15 is the second connecting arm, 151 is the hinge connecting plate, 16 is the first hinge shaft, 2 is the bow body, 21 is the fixed strut, 211 is the vertical strut, 22 is the inclined strut, 221 is the second guiding pulley, 222 is the bowstring fixing seat, 3 is the elastic telescopic member, 31 is the clamping seat, 311 is the through hole, 312 is the bayonet, 32 is the rubber hose, 4 is the bowstring. Specific embodiments

[0021] Next, specific embodiments will be combined with the attached Figure 1-6 The technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only some preferred embodiments of the present utility model, rather than all embodiments. Those skilled in the art can make similar deformations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] The present utility model provides a string-pulling swing arm for a new bow (such as Figure 1As shown in the figure, the string-pulling swing arm includes a bowstring guiding end and a bow body connecting end. The bowstring guiding end and the bow body connecting end are respectively located at the outer end and the inner end of the string-pulling swing arm. The bowstring guiding end is used to guide the threading of the bowstring, and the bow body connecting end is used to connect with the bow body. A connecting portion is provided on the string-pulling swing arm, and the connecting portion is located between the bowstring guiding end and the bow body connecting end. In practical applications, the string-pulling swing arm can swing relative to the bow body as a whole. For example, the string-pulling swing arm is processed into a straight rod, with one end of the straight rod being the bowstring guiding end and the other end being the bow body connecting end. By using the hinge connection between the bow body connecting end and the bow body, the swing of the bowstring guiding end is achieved. When the bowstring guiding end swings, it is convenient to subsequently pull the bowstring, and then use the bowstring to eject the bow and arrow. When the string-pulling swing arm is a whole rod, when pulling the string-pulling swing arm backward, there will be a situation where the bow body blocks the further swing of the string-pulling swing arm, resulting in a smaller swing amplitude of the bowstring guiding end. At this time, to increase the swing amplitude of the bowstring guiding end as much as possible, the string-pulling swing arm can be made into a split structure. For example, the string-pulling swing arm is composed of two components, and the two components are hinged. The bowstring guiding end is distributed at the outer end of one component, and the bowstring connecting end is distributed at the outer end of the other component. After using the bowstring connecting end to be hinged to the bow body, when the component connected to the bow body stops rotating due to the block of the bow body, the other component can still swing to a certain extent, thereby increasing the swing stroke of the bowstring guiding end. In this specific embodiment, the specific implementation manner of the string-pulling swing arm being hinged by two components is as follows: The string-pulling swing arm includes a first connecting arm 14 and a second connecting arm 15. One end of the first connecting arm 14 is hinged to one end of the second connecting arm 15. By using the hinge relationship between the first connecting arm 14 and the second connecting arm 15, the relative rotation of the first connecting arm 14 and the second connecting arm 15 is achieved. The end of the first connecting arm 14 away from the second connecting arm 15 is the bowstring guiding end 11, and the end of the second connecting arm 15 away from the first connecting arm 14 is the bow body connecting end. The bow body connecting end on the second connecting arm 15 is hinged to the bow body. By using the hinge connection between the second connecting arm 15 and the bow body, the swing of the second connecting arm 15 is achieved. By using the hinge between the first connecting arm 14 and the second connecting arm 15, the swing of the first connecting arm 14 relative to the second connecting arm 15 is achieved. When the second connecting arm 15 stops rotating due to the block of the bow body, because the first connecting arm 14 is away from the bow body, the first connecting arm 14 can still rotate to a certain extent, thereby increasing the swing amplitude of the bowstring guiding end 11. The connecting portion 13 is provided on the first connecting arm 14 and is adjacent to the hinge between the first connecting arm 14 and the second connecting arm 15. In practical applications, by pulling the connecting portion 13, the rotation of the first connecting arm 14 and the second connecting arm 15 can be achieved. At the same time, after the second connecting arm 15 stops rotating, the first connecting arm 14 can still be further pulled to rotate to a certain extent.

[0023] Based on the above embodiments, the specific implementation manner of the bowstring guiding end 11 is as follows: The bowstring guiding end 11 includes a first guiding pulley 111, and the first guiding pulley 111 is rotatably arranged on the first connecting arm 14; further, the connecting portion 13 includes two hanging rods 131, and the two hanging rods 131 are symmetrically fixed on the front side wall and the rear side wall of the first connecting arm 14 in the front and rear directions.

[0024] Based on the above embodiments, the specific implementation manner of the second connecting arm 15 is as follows: The second connecting arm 15 includes two articulated connecting plates 151. At the end where the first connecting arm 14 is connected to the second connecting arm 15, a first articulated shaft 16 is provided. One end of the articulated connecting plate 151 is articulated to the corresponding shaft end of the first articulated shaft 161. At this time, by using an articulated shaft to articulate the two articulated connecting plates 151 on the bow body, the rotational setting of the two articulated connecting plates 151 with respect to the bow body is realized, so that the two articulated connecting plates 151 can rotate freely with respect to the bow body; in practical applications, to improve the swinging stability of the first connecting arm 14, two first gears 141 symmetrically distributed in the front and rear directions are provided on the first connecting arm 14. The two first gears 141 are coaxially distributed with the first articulated shaft 16, and the first connecting arm 14 and the two first gears 141 can rotate synchronously. A second articulated shaft 121 is provided at the end of the two articulated connecting plates 151 away from the first articulated shaft 16. Two second gears 122 are provided on the second articulated shaft 121. At this time, the second articulated shaft 121 and the two second gears 122 form the bow arm connecting end 12 of the string-pulling swing arm. The second gear 122 meshes with the corresponding first gear 141, and the articulated connecting plate 151 can rotate around the axis of the second articulated shaft 121 with respect to the second gear 122. In practical applications, when the second gear 122 is fixed, through the cooperation relationship between the first gear 141 and the second gear 122 and the rotational limit of the first gear 141 by the articulated connecting plate 151, the stable revolution and self-rotation of the first gear 141 around the second gear 122 are realized. The stable revolution and self-rotation of the first gear 141 can realize the large-amplitude swing of the first guiding pulley 111.

[0025] The present invention provides a new type of bow (such as Figure 4-5As shown in the figure, it includes two sets of the novel bow string-pulling swing arms described above. This novel bow also includes a bow body 2, an elastic telescopic member 3, and a bow string 4. On the left side of the bow body 2, two fixed struts 21 are arranged vertically. On the right side of each fixed strut 21, an inclined strut 22 that inclines outward is arranged. At the right end of each inclined strut 22, a second guide pulley 221 is arranged. A novel bow string-pulling swing arm is arranged between the fixed strut 21 and the inclined strut 22. On the inclined strut 22, a bow string fixing seat 222 located on the right side of the corresponding novel bow string-pulling swing arm is arranged. The two second gears 122 on each set of novel bow string-pulling swing arms are arranged front and back on the bow body 2, and the second gear 122 cannot rotate freely relative to the bow body 2. The free end of the bow string 4 sequentially bypasses the corresponding second guide pulley 221 and the first guide pulley 111 and then is fixedly connected to the corresponding bow string fixing seat 222. An elastic telescopic member 3 is arranged between the left end of the fixed strut 21 and the connecting portion 13. In practical applications, the fixed strut 21 and the elastic telescopic member 3 provide fixed support points. When the bow string 4 is pulled to the right with force, the outer end of the first connecting arm 14 (i.e., the bow string guiding end 11) swings continuously to the right under the pulling of the bow string 4. During the continuous rightward swing of the first connecting arm 14, the elastic telescopic member 3 is pulled to stretch. By using the resilience and reset ability of the elastic telescopic member 3, a reverse pulling force is applied to the first connecting arm 14. When the bow string is released, under the pulling action of the elastic telescopic member 3 on the first connecting arm 14, the bow string 4 is pulled toward the arrow shooting direction. When the bow string 4 is pulled, it pushes the arrow to move, thereby realizing the shooting of the arrow.

[0026] Based on the above embodiments, a specific implementation of the elastic telescopic member 3 is as follows: The elastic telescopic member 3 includes a clamping seat 31 and a rubber hose 32. The clamping seat 31 is hinged to the left end of the fixed strut 21. Specifically, the clamping seat 31 is hinged to the vertical strut 211 provided at the left end of the fixed strut 21, and the clamping seat 31 can freely rotate around the vertical strut 211. The two free ends of the rubber hose 32 are clamped and fixed on the clamping seat 31, and the middle part of the rubber hose 32 is connected to the connecting portion 13. When the connecting portion 13 is a through hole, the middle part of the rubber hose 32 is sleeved in the through hole. When the connecting portion 13 is a hanging rod 131, the middle part of the rubber hose 32 is directly hung on the hanging rod 131. Further, the specific implementation of the connection between the rubber hose 32 and the clamping seat 31 is as follows: Two through holes 311 are provided on the clamping seat 31, and a buckle 312 is opened on one side of each through hole 311. The free end of the rubber hose 32 can be clamped into the corresponding through hole 311 by using the buckle 312. By tying a knot or providing a stopper at the free end of the rubber hose 32, the free end of the rubber hose 32 can be effectively prevented from being pulled out of the through hole 311, thereby facilitating the stretching of the rubber hose 32.

[0027] In practical applications, when the first connecting arm 14 is pulled to the right by the bowstring 4 until it reaches the proper position, to ensure that the rubber hose 32 can pull the corresponding first connecting arm 14 to swing accordingly. Here, when designing the structures of the bowstring-pulling swing arm and the bow body, from Figure 4 the view angle, after the bowstring 4 pulls the first connecting arm 14 above the bow body 2 to swing to the right until it reaches the proper position, it is necessary to ensure that the rotational torque exerted by the rubber hose 32 above the bow body 2 on the first connecting arm 14 at this time enables the first connecting arm 14 to rotate counterclockwise around the second gear 122. After the bowstring 4 pulls the first connecting arm 14 below the bow body 2 to swing to the right until it reaches the proper position, it is necessary to ensure that the rotational torque exerted by the rubber hose 32 below the bow body 2 on the first connecting arm 14 at this time enables the first connecting arm 14 to rotate clockwise around the second gear 122. With the above functional settings, the smooth swing of the first connecting arm 14 can be ensured, and thus the smooth launch of the bow and arrow can be ensured.

[0028] In practical applications, within the limited swinging range of the first connecting arm 14, in order to maximize its pulling strength on the bowstring 4 and thus increase the ejection strength of the bowstring 4 on the bow and arrow, here, two clamping seats 31 are provided at the left end of each fixed strut 21. At the same time, two rubber hoses 32 are provided on each clamping seat 41. In this way, each first connecting arm 14 is pulled back by four rubber hoses 32, thereby increasing the pulling strength of the first connecting arm 14 on the bowstring 4. When pulling the bowstring 4 to make the first connecting arm 14 and the articulated connecting arm 151 swing to the right, when the articulated connecting arm 151 stops rotating under the block of the bow body 2, since the first connecting arm 14 and the articulated connecting arm 151 are articulated, the first connecting arm 14 can still swing to the right to a certain extent. Similarly, when the bowstring 4 is released, the first connecting arm 14 and the articulated connecting arm 151 swing to the left under the pulling of the rubber hose 32. When the articulated connecting arm 151 stops rotating under the block of the bow body 2, since the first connecting arm 14 and the articulated connecting arm 151 are articulated, the first connecting arm 14 can still swing to the left to a certain extent. Therefore, by utilizing the phenomenon that the first connecting arm 14 swings further to the left or right relative to the articulated connecting arm 151, the stretching and retraction stroke of the rubber hose 32 is greatly increased. When the rubber hose 32 is fully stretched, the ejection initial acceleration of the bowstring 4 on the bow and arrow can be indirectly increased. When the retraction stroke is increased, the pushing action time of the bowstring 4 on the bow and arrow can be indirectly extended, thereby ultimately realizing the ejection speed of the bow and arrow and providing the range of the bow and arrow.

[0029] The rubber hose 32 has strong flexibility. Therefore, during the process of its being pulled and rebounding to the reset position, it has a low vibration transmission ability. At the same time, the rubber hose 32 itself also has good shock absorption ability. Therefore, during the process of using the rubber hose 32 to pull the first connecting arm 14 to swing leftward, the vibration generated by it on the bow body 2 is small, and then the vibration of the bow body 2 is greatly reduced. Therefore, by combining the rubber hose 32 with the string-pulling swing arm, on the basis of achieving less vibration of the bow body, at the same time, it is convenient to simplify the structure of the bow body and reduce its manufacturing cost. When using the bowstring 4 to pull the first connecting arm 14 backward, the first guiding pulley plays the role of a starting pulley, so as to reduce the pulling force of the artificial pulling of the bowstring 4, making it easy to pull open the bowstring 4; further, because the lever arm between the first guiding pulley 111 and the center point of the rightward swing of the first connecting arm 14 is greater than the lever arm between the hanging rod 131 and the center point of the rightward swing of the first connecting arm 14, so when using the bowstring 4 to pull back the first connecting swing arm 14, the principle of leverage is used to achieve labor-saving in pulling back the bowstring 4; the first gear 141 meshes with the second gear 122, and the first gear 141 is fixedly connected with the first connecting arm 14. Therefore, when using the swing of the first connecting arm 14 to pull the bowstring 4, by using the cooperation relationship between the first gear 141 and the second gear 122, the swing stability of the first connecting arm 14 is improved, and then the pulling stability of the bowstring 4 is improved. The bowstring 4 is stably pulled, which is beneficial to realizing the stable launch of the bow and arrow.

[0030] In the present utility model, "front", "rear", "upper", "lower", "left" and "right" are all relative positions adopted for the convenience of describing the positional relationship, and therefore cannot be understood as absolute positions to limit the protection scope.

[0031] Except for the technical features described in the specification, they are all known technologies to those skilled in the art.

[0032] As described above, the preferred embodiments and examples of the present utility model have been described in detail in conjunction with the drawings. However, the present utility model is not limited to the above embodiments and examples. For those of ordinary skill in the art in this technical field, without departing from the concept of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A new type of bow string swing arm, characterized in that: The string-drawing swing arm includes a bowstring guide end and a bow body connecting end, wherein the bowstring guide end and the bow body connecting end are respectively located at the outer end and the inner end of the string-drawing swing arm, the bowstring guide end is used to realize the passing guide of the bowstring, and the bow body connecting end is used to realize the connection with the bow body, and a connecting part is arranged on the string-drawing swing arm, and the connecting part is located between the bowstring guide end and the bow body connecting end.

2. The novel bow string swing arm according to claim 1 is characterized in that: The bowstring swing arm includes a first connecting arm and a second connecting arm, one end of the first connecting arm is hingedly connected to one end of the second connecting arm, the end of the first connecting arm away from the second connecting arm is the bowstring guide end, the end of the second connecting arm away from the first connecting arm is the bow body connecting end, and the connecting portion is arranged on the first connecting arm and adjacent to the hinge of the first connecting arm and the second connecting arm.

3. The new bow string swing arm according to claim 2 is characterized in that: The bowstring guide end includes a first guide pulley, and the first guide pulley is rotatably arranged on the first connecting arm.

4. The novel bow string swing arm according to claim 3 is characterized in that: The connecting portion comprises two hanging rods, and the two hanging rods are fixedly arranged on the front side wall and the rear side wall of the first connecting arm in a front-to-back symmetrical manner.

5. The novel bow string swing arm according to claim 3 or 4, characterized in that: The second connecting arm includes two hinged connecting plates. A first hinge shaft is arranged at the end where the first connecting arm and the second connecting arm are connected. One end of the hinged connecting plate is hingedly connected to the shaft end corresponding to the first hinge shaft.

6. The novel bow string swing arm according to claim 5 is characterized in that The first connecting arm is provided with two first gears which are symmetrically distributed front and back, and the two first gears are coaxially distributed with the first hinge shaft. The first connecting arm and the two first gears can rotate synchronously. A second hinge shaft is provided on the ends of the two hinged connecting plates away from the first hinge shaft. Two second gears are provided on the second hinge shaft, and the second gears are meshed with the corresponding first gears. The hinged connecting plate can rotate around the axis of the second hinge shaft relative to the second gears.

7. A new type of bow, characterized in that: The invention comprises two groups of new bow string-drawing swing arms according to claim 6, the new bow also comprises a bow body, an elastic telescopic part, and a bowstring, two fixed struts distributed up and down are arranged on the left side of the bow body, an inclined strut inclined outward is arranged on the right side of each of the fixed struts, a second guide pulley is arranged on the right end of each of the inclined struts, a new bow string-drawing swing arm is arranged between the fixed strut and the inclined strut, a bowstring fixing seat located on the right side of the corresponding new bow string-drawing swing arm is arranged on the inclined strut, the two second gears on each group of the new bow string-drawing swing arms are arranged front and back on the bow body, and the second gears cannot rotate freely relative to the bow body, the free end of the bowstring is fixedly connected to the corresponding bowstring fixing seat after passing through the corresponding second guide pulley and the first guide pulley in turn, and an elastic telescopic part is arranged between the left end of the fixed strut and the connecting part.

8. The new bow according to claim 7, characterized in that: The elastic telescopic member comprises a clamping seat and a rubber hose. The clamping seat is hingedly arranged at the left end of the fixed support rod. The two free ends of the rubber hose are clamped and fixed on the clamping seat. The middle part of the rubber hose is connected to the connecting part.

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