US20240093961A1

US20240093961A1 - Compound Bow

Info

Publication number: US20240093961A1
Application number: US17/949,310
Authority: US
Inventors: Nannan Ren
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2024-03-21

Abstract

A compound bow is disclosed. The bow, in an embodiment includes a handle component, pulleys, strings and limbs. Both ends of the structure are connected with limbs via screws. A notch is provided for the upper limbs. The pulley assembly is detachably arranged in the notch. The two pulleys constitute axisymmetric. The string assembly is respectively connected with the pulley assembly and the limbs. The handle component includes an upper section, a position mounting structure and a lower section. The upper end of the handle and the lower end of the upper section are fixed and connected in a detachable manner. The lower end of the handle and the upper end of the lower section are fixed and connected in a detachable manner.

Description

TECHNICAL FIELD

The present application relates to sports equipment. More specifically, the present application relates to compound bows.

BACKGROUND ART

Compound bows are mostly used in archery competitions and archery training. With the popularization of archery, compound bows have become more and more popular and become a new way of leisure and entertainment. The bow mainly comprising a handle component, pulleys, strings and limbs. Hold the adjustable handle with one hand and pull the string between the pulleys with the other hand. Convert the energy stored on the pulleys after deformation into kinetic energy of the arrow, so that the arrow can shoot to the target quickly and accurately. However, the current compound bow still has the following problems:
Firstly, at present, most of the handle components are integrally formed. And there are problems such as difficult processing, poor processing accuracy, and poor stability.
Secondly, most compound bows on the market have adjustable module of cams. But this is applied to a small range of draw distance adjustment. This adjustment range is small and the pull force does not change much. Not suitable if a wide range of adjustment is required. An improved compound bow that can adjust both the draw length and the draw force in a wide range is desirable.

SUMMARY OF THE INVENTION

In various embodiments, a compound bow that can solve the shortcomings of the above technology, is provided.
In an embodiment, to solve the above technical problems, the bow comprising a handle component, pulleys, strings and limbs. Both ends of the structure are connected with limbs via screws. A notch is provided for the upper limbs. The pulley assembly is detachably arranged in the notch. The two pulleys constitute axisymmetric. The string assembly is respectively connected with the pulley assembly and the limbs.
In an embodiment, the handle component comprising an upper section, a position mounting structure and a lower section. The upper end of the position mounting structure and the lower end of the upper section are fixed and connected in a detachable manner. The lower end of the position mounting structure and the upper end of the lower section are fixed and connected in a detachable manner.
In an embodiment, the lower section comprising two lower riser hollow plates, the lower connecting rods and the lower fixed rods. The lower riser hollow plate is provided with a plurality of lower apertures. The two lower riser hollow plate are connected by the lower connecting rod. Both ends of the lower connecting rod are respectively located in the lower apertures. The lower fixed rod is provided with lower bolt holes. The limbs are fixed in the lower bolt holes by screws. A lower supporting structure is arranged between the lower end of the two lower riser hollow plates. The lower supporting structure and the lower limb are matched to support the lower limb.
In an embodiment, the position mounting structure comprising the connection plate, the first connector, the secondary connectors, the adjustable handle and the removable supporting structure. The connection plate is connected with the lower end of the upper section. The first connector is arranged between the two lower riser hollow plates and is connected with them. The first connector is located on one side of the secondary connector. Both ends of the first connector are symmetrically provided with removable supporting structures. The other end of the removable supporting structure is connected with the connection plate in a detachable manner. The upper end of the adjustable handle is connected with the lower end of the connection plate by screws. The lower end of the adjustable handle is connected with the secondary connector by screws. The adjustable handle and the two removable supporting structure are arranged in a triangular shape. A bowstring suppressor is provided on the secondary connector. A cable guide is provided on the upper section.
In an embodiment, the pulley assembly comprising two main cams with different sizes and an cable let-off cam. The two main cams are coaxially arranged. the cable let-off cam is arranged at the side of the larger main cam. The two main cams are symmetrically arranged. The string assembly cooperates with the cable let-off cam and the main cams.
In an embodiment, the upper section comprising two first upper riser hollow plates, a first connecting rod and a first fixed rod. The first upper riser hollow plates is provided with first plurality of apertures. The two first upper riser hollow plates are connected with the first connecting rod. Both ends of the first connecting rod are respectively located in the corresponding first plurality of apertures. Two ends of the first fixed rod are respectively arranged in the first plurality of apertures corresponding to the ends of the first upper riser hollow plate. The first fixed rod is provided with first bolt hole. The upper limb is fixed in the first bolt hole by a screw. The connecting plate is arranged between two the first upper riser hollow plate and is connected with the first upper riser hollow plate. A first supporting structure is arranged between the upper ends of the first upper riser hollow plate. The first supporting structure and the upper limb are matched for supporting the upper limb.
In an embodiment, the upper section comprising a connecting hollow frame and a second connecting hollow plate. The lower end of the second connecting hollow plate is detachably arranged on the upper end of the connecting hollow frame. The upper end of the second connecting hollow plate is provided with a second bolt hole. The lower end of the connecting hollow frame is connected with the connecting plate. The upper limb is fixed in the second bolt hole by a screw. The second connecting hollow plate is provided with a second supporting structures. The second supporting structure connected with the upper limb and to support it.
In an embodiment, the upper section comprising a hollow connector and a third connecting hollow plate. The third connecting hollow plate is symmetrically arranged on the upper end of the hollow connector. The third connecting hollow plate is fixedly connected to the connecting hollow frame. The third connecting hollow plate is provided with a second connecting rod. The two third connecting hollow plate are connected by the second connecting rod. The lower end of the hollow connector is connected with the connecting plate. The upper end of the second connecting hollow plate is provided with a second fixed rod. The second fixed rod is provided with a third bolt hole. The upper limb is fixed in the third bolt hole by a screw. A third supporting structure is arranged between the two third connecting hollow plates. The third supporting structure connected with the upper limb and to support it.
In an embodiment, The string assembly comprising two cable strings and a bowstring. One ends of the two cable strings are respectively fixed on the sides of two different limbs. The other ends of the two cable strings are respectively fixed on the main cams. Both ends of the bowstrings are respectively wound around the main cams of upper and lower limbs. the cable strings cooperate with the cable guide. the bowstring cooperates with the bowstring suppressor.
In an embodiment, the limbs are tilted arranged at symmetrical or asymmetrical position of both ends of the bow handle assembly.
The advantage of the present application compared with the prior technology is that: The handle component comprising an upper section, a position mounting structure and a lower section. the upper section, the middle section and lower section could also be disassembled into several small components. This greatly reduces the processing difficulty of the bow handle assembly. It is more conducive to the machining accuracy of the handle components, thereby improving the stability.
The pulley assembly comprising two main cams with different sizes and an cable let-off cam in the present application. Which could meet the different requirement of users. Quickly change the bowstring to a suitable main cam, allowing a wide range of draw and tension adjustments in compound bows in a short period of time. It greatly improves the user's experience, expands the scope of application of the compound bow, and is conducive to large-scale promotion and use.
The position mounting structure comprising the connecting plate, the first connector, the secondary connector, the adjustable handle and the removable supporting structure. The pulling distance can be adjusted without changing the pulling force by adjusting the installation direction and position of the handle assembly. It further meets the different requirements of different users for the pulling distance.
The handle components are mostly designed with hollow holes in the present application. Which could reduce the weight of the bow for ease of use.
This Summary is an overview of Some of the teachings of the present application and is not intended to be an exclusive or exhaustive treatment of the present subject matter. Further details are found in the detailed description and appended claims. Other aspects will be apparent to persons skilled in the art upon reading and understanding the following detailed description and viewing the drawings that form a part thereof, each of which is not to be taken in a limiting sense. The scope of the present application is defined by the appended claims and their legal equivalents.

BRIEF DESCRIPTION OF ACCOMPANY DRAWINGS

The technology may be more completely understood in connection with the following drawings, in which:

FIG. 1 is a view of a compound bow, according to an embodiment.

FIG. 2 is a view of a compound bow, according to an embodiment.

FIG. 3 is a view of an upper section for a compound bow, according to an embodiment.

FIG. 4 is a view of a compound bow, according to an embodiment.

FIG. 5 is a view of a compound bow, according to an embodiment.

FIG. 6 is a view of a compound bow, according to an embodiment.

FIG. 7 is a view of an upper section for a compound bow, according to an embodiment.

FIG. 8 is a view of a lower section for a compound bow, according to an embodiment.

FIG. 9 is a view of a position mounting structure for a compound bow, according to an embodiment.

FIG. 10 is a view of a pulley for a compound bow, according to an embodiment.

FIG. 11 is a view of a pulley for a compound bow, according to an embodiment.

As show in FIG. 1-11 :

- 1. upper limb
- 2. the notch
- 3. the lower section
- 4. the position mounting structure
- 5. the upper section
- 6. the lower riser hollow plate
- 7. the second connecting rod
- 8. the lower fixed rod
- 9. the lower apertures
- 10. the lower bolt holes
- 11. the lower supporting structure
- 12. the connecting plate
- 13. the first connector
- 14. the secondary connector
- 15. the adjustable handle
- 16. the removable supporting structure
- 17. bowstring suppressor
- 18. the cable guide
- 19. the cable let-off cam
- 20. the main cam
- 21. the first upper riser hollow plate
- 22. the first connecting rod
- 23. the first fixed rod
- 24. the first plurality of apertures
- 25. the first bolt hole
- 26. the first supporting structure
- 27. the connecting hollow frame
- 28. the second connecting hollow plate
- 29. the second bolt hole
- 30. the second supporting structure
- 31. the hollow connector
- 32. the third connecting hollow plate
- 33. the second connecting rod
- 34. the second fixed rod
- 35. the third bolt hole
- 36. the third supporting structure
- 37. the cable strings
- 38. the bowstring

While the technology is susceptible to various modifications and alternative forms, specifics thereof have been shown by way of example and drawings, and will be described in detail. It should be understood, however, that the application is not limited to the particular embodiments described. On the contrary, the application is to cover modifications, equivalents, and alternatives falling within the spirit and scope of the technology.

SPECIFIC EMBODIMENT OF THE INVENTION

The embodiments of the present technology described herein are not intended to be exhaustive or to limit the technology to the precise forms disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art can appreciate and understand the principles and practices of the present technology.
All publications and patents mentioned herein are hereby incorporated by reference. The publications and patents disclosed herein are provided solely for their disclosure. Nothing herein is to be construed as an admission that the inventors are not entitled to antedate any publication and/or patent, including any publication and/or patent cited herein.
As shown in FIG. 1-11 , the bow comprises a handle component, pulleys, strings and limbs 1. Both ends of the structure are connected with limbs 1 via screws. A notch 2 is provided for the upper limbs 1. The pulley assembly is detachably arranged in notch 2. The two pulleys constitute axisymmetric. The string assembly is respectively connected with the pulley assembly and the limbs 1.
In an embodiment, the handle component comprises an upper section 5, a position mounting structure 4 and a lower section 3. The upper end of the position mounting structure 4 and the lower end of the upper section 5 are fixed and connected in a detachable manner. The lower end of the position mounting structure 4 and the upper end of the lower section 3 are fixed and connected in a detachable manner.
In an embodiment, the lower section 3 comprises two lower riser hollow plates 6, the lower connecting rods 7 and the lower fixed rods 8. The lower riser hollow plate 6 is provided with a plurality of lower apertures 9. The two lower riser hollow plate 6 are connected by the lower connecting rod 7. Both ends of the lower connecting rod 7 are respectively located in the lower apertures 9. The lower fixed rod 8 is provided with lower bolt holes 10. The limbs 1 are fixed in the lower bolt holes 10 by screws. A lower supporting structure 11 is arranged between the lower end of the two lower riser hollow plates 6. The lower supporting structure 11 and the lower limb 1 are matched to support the lower limb 1.
In an embodiment, the position mounting structure 4 comprises the connection plate 12, the first connector 13, the secondary connectors 14, the adjustable handle 15 and the removable supporting structure 16. The connection plate 12 is connected with the lower end of the upper section 5. The first connector 13 is arranged between the two lower riser hollow plates 6 and is connected with them. The first connector 13 is located on one side of the secondary connector 14. Both ends of the first connector 13 are symmetrically provided with removable supporting structures 16. The other end of the removable supporting structure 16 is connected with the connection plate 12 in a detachable manner. The upper end of the adjustable handle 15 is connected with the lower end of the connection plate 12 by screws. The lower end of the adjustable handle 15 is connected with the secondary connector 14 by screws. The adjustable handle 15 and the two removable supporting structure 16 are arranged in a triangular shape. A bowstring suppressor 17 is provided on the secondary connector 14. A cable guide 18 is provided in the upper section 5.
In an embodiment, the pulley assembly comprises two main cams 20 of different sizes and an cable let-off cam 19. The two main cams 20 are coaxially arranged. the cable let-off cam 19 is arranged at the side of the larger main cam 20. The two main cams 20 are symmetrically arranged. The string assembly cooperates with the cable let-off cam 19 and the main cams 20.
In an embodiment, the upper section 5 comprises two first upper riser hollow plates 21, a first connecting rod 22 and a first fixed rod 23. The first upper riser hollow plates 21 is provided with a first plurality of apertures 24. The two first upper riser hollow plates 21 are connected with the first connecting rod 22. Both ends of the first connecting rod 22 are respectively located in the corresponding first plurality of apertures 24. Two ends of the first fixed rod 23 are respectively arranged in the first plurality of apertures 24 corresponding to the ends of the first upper riser hollow plate 21. The first fixed rod 23 is provided with the first bolt hole 25. The upper limb 1 is fixed in the first bolt hole 25 by a screw. The connecting plate 12 is arranged between two the first upper riser hollow plate 21 and is connected with the first upper riser hollow plate 21. A first supporting structure 26 is arranged between the upper ends of the first upper riser hollow plate 21. The first supporting structure 26 and the upper limb 1 are matched for supporting the upper limb 1.
In an embodiment, the upper section 5 comprises a connecting hollow frame 27 and a second connecting hollow plate 28. The lower end of the second connecting hollow plate 28 is detachably arranged on the upper end of the connecting hollow frame 27. The lower end of the connecting hollow frame 27 is connected with the connecting plate 12. The upper end of the second connecting hollow plate 28 is provided with a second bolt hole 29. The upper limb 1 is fixed in the second bolt hole 29 by a screw. The second connecting hollow plate 28 is provided with a second supporting structure 30. The second supporting structure 30 connected with the upper limb 1 and supports it.
In an embodiment, the upper section 5 comprising a hollow connector 31 and a third connecting hollow plate 32. The third connecting hollow plate 32 is symmetrically arranged on the upper end of the hollow connector 31. The third connecting hollow plate 32 is fixedly connected to the connecting hollow frame 27. The third connecting hollow plate 32 is provided with a second connecting rod 33. The hollow connector 31 is connected with the connecting plate 12. The two third connecting hollow plate 28 are connected by the second connecting rod 34. The second fixed rod 34 is provided with a third bolt hole 35. The upper limb 1 is fixed in the third bolt hole 35 by a screw. A third supporting structure 36 is arranged between the two third connecting hollow plates 32. The third supporting structure 36 connected with the upper limb 1 and supports it.
In an embodiment, The string assembly comprises two cable strings 37 and a bowstring 38. One end of the two cable strings 37 are respectively fixed on the sides of two different limbs 1. The other ends of the two cable strings 37 are respectively fixed on the main cams 20. Both ends of the bowstrings 38 are respectively wound around the main cams 20 of upper and lower limbs 1. the cable strings 37 cooperate with the cable guide 18. the bowstring 38 cooperates with the bowstring suppressor 17.
In an embodiment, the limbs 1 are tilted arranged at a symmetrical or asymmetrical positions of both ends of the bow handle assembly.
In an embodiment of example 1, as shown in FIG. 1-3 , assemble the handle component, pulleys, strings and limbs 1 together when in use. Both ends of the handle component are connected to the limbs 1 by screws. One end of the limbs 1 is arranged in notch 2. The two cable strings 37 and the bowstring 38 are installed on the pulleys.
For the installation of the lower section 3: respectively insert the two ends of the lower connecting rod 7 into the lower apertures 9 of the lower riser hollow plate 6. Respectively insert the two ends of the lower fixed rod 8 into the lower apertures 9 of the lower riser hollow plate 6. Then fix the limbs 1 in the lower bolt holes 10 via screws. The lower supporting structure 11 and the lower limb 1 are matched to support the lower limb 1. The lower supporting structure 11 serves as a support for the limbs 1. Then install the lower section 3 on the lower end of the position mounting structure 4.
For the installation of the upper section 5: respectively insert the two ends of the first connecting rod 22 into the first plurality of apertures 24 of the first upper riser hollow plate 21. Respectively insert the two ends of the first fixed rod 23 into the first plurality of apertures 24 of the first upper riser hollow plate 21. Then fix the limbs 1 in the first bolt hole 25 via screws. The first supporting structure 26 is provided between the two first upper riser hollow plate 21. The first supporting structure 26 and the lower limb 1 are matched to support the lower limb 1. The first supporting structure 26 serves as a support for the limbs 1. Then install the upper section 5 on the lower end of the position mounting structure 4. Then, one end of the two cable strings 37 is respectively fixed on the sides of the limbs 1. The other end of the two cable strings 37 is respectively fixed on the main cams 20 of limbs 1. One end of the bowstring 38 is wrapped in main cam 20 of upper limb 1. The other end of the bowstring 38 is wrapped in main cam 20 of lower limb 1. The compound bow is now installed and ready to use.
In an embodiment of example 2, as shown in FIG. 4-5 , assemble the handle component, pulleys, strings and limbs 1 together when in use. Both ends of the handle component are connected to the limbs 1 by screws. One end of the limbs 1 is arranged in notch 2. The two cable strings 37 and the bowstring 38 are installed on the pulleys.
For the installation of the lower section 3: respectively insert the two ends of the lower connecting rod 7 into the lower apertures 9 of the lower riser hollow plate 6. Respectively insert the two ends of the lower fixed rod 8 into the lower apertures 9 of the lower riser hollow plate 6. Then fix the limbs 1 in the lower bolt holes 10 via screws. The lower supporting structure 11 and the lower limb 1 are matched to support the lower limb 1. The lower supporting structure 11 serves as a support for the limbs 1. Then install the lower section 3 on the lower end of the position mounting structure 4.
For the installation of the upper section 5: Install the connecting hollow frame 27 on the second connecting hollow plate 28. Then fix the limbs 1 in the second bolt hole 29 via screws. Then install the upper section 5 on the upper end of the position mounting structure 4. Then, one end of the two cable strings 37 is respectively fixed on the sides of the limbs 1. The other end of the two cable strings 37 is respectively fixed on the main cams 20 of limbs 1. One end of the bowstring 38 is wrapped in main cam 20 of upper limb 1. The other end of the bowstring 38 is wrapped in main cam 20 of lower limb 1. The compound bow is now installed and ready to use. The upper end of the second connecting hollow plate 28 is provided with a second supporting structure 30. The second supporting structure 30 and the limb 1 are matched to support the limb 1. The second supporting structures 30 serves as a support for the limbs 1.
In an embodiment of example 3, as shown in FIG. 6-7 , assemble the handle component, pulleys, strings and limbs 1 together when in use. Both ends of the handle component are connected to the limbs 1 by screws. One end of the limbs 1 is arranged in notch 2. The two cable strings 37 and the bowstring 38 are installed on the pulleys.
For the installation of the lower section 3: respectively insert the two ends of the lower connecting rod 7 into the lower apertures 9 of the lower riser hollow plate 6. Respectively insert the two ends of the lower fixed rod 8 into the lower apertures 9 of the lower riser hollow plate 6. Then fix the limbs 1 in the lower bolt holes 10 via screws. The lower supporting structure 11 and the lower limb 1 are matched to support the lower limb 1. The lower supporting structure 11 serves as a support for the limbs 1. Then install the lower section 3 on the lower end of the position mounting structure 4.
For the installation of the upper section 5: Install the third connecting hollow plate 32 on the upper end of the hollow connector 31. The second connecting hollow plate 28 is provided with the second fixed rod 34. The second fixing rod 34 is provided with the third bolt hole 35. The third supporting structure 36 is provided between the two third connecting hollow plates 32. The third supporting structure 36 and the limb 1 are matched to support the limb 1. The third supporting structure 36 serves as a support for the limbs 1. Then install the upper section 5 on the lower end of the position mounting structure 4. Then, one end of the two cable strings 37 is respectively fixed on the sides of the limbs 1. The other end of the two cable strings 37 is respectively fixed on the main cams 20 of limbs 1. One end of the bowstring 38 is wrapped in main cam 20 of upper limb 1. The other end of the bowstring 38 is wrapped in main cam 20 of lower limb 1. The compound bow is now installed and ready to use.
For examples 1-3, The installation direction of the adjustable handle and the removable supporting structure can be changed according to the actual usage. So that the draw length can be adjusted without changing the tensile force. Which further meet the different requirements of users. According to usage, there are options to install only one adjustable handle, or install an adjustable handle and a removable supporting structure, or install an adjustable handle and the two removable supporting structures.
For examples 2-3, The position of the position mounting structure can be adjusted up and down. According to usage, there are options for installing the position mounting structure between the connecting hollow frame 27 and the second connecting hollow plate 28, or installing the position mounting structure between the third connecting hollow plate 32 and the hollow connector 31.
For all examples in this application, according to usage, the lower riser hollow plate 6 of the lower section 3, the first upper riser hollow plate 21 of the upper section 5, the second connecting hollow plate 28 and the third connecting hollow plate 32 can be installed in one sheet or two sheets. When installed in two sheets, the width between the two sheets can be customized.

Claims

1. A compound bow, comprising a handle component, pulleys, strings and limbs; both ends of the structure are connected with limbs via screws; a notch is provided for the upper limbs; the pulley assembly is detachably arranged in the notch; the two pulleys constitute axisymmetric; the string assembly is respectively connected with the pulley assembly and the limbs;

wherein the handle component comprising an upper section, a position mounting structure and a lower section; the upper end of the position mounting structure and the lower end of the upper section are fixed and connected in a detachable manner; the lower end of the position mounting structure and the upper end of the lower section are fixed and connected in a detachable manner;

wherein the lower section comprising two lower riser hollow plates, a lower connecting rods and the lower fixed rods; the lower riser hollow plate is provided with a plurality of lower apertures; the two lower riser hollow plate are connected by the lower connecting rod; both ends of the lower connecting rod are respectively located in the lower apertures; the lower fixed rod is provided with lower bolt holes; the limbs are fixed in the lower bolt holes by screws; a lower supporting structure is arranged between the lower end of the two lower riser hollow plates; the lower supporting structure and the lower limb are matched to support the lower limb;

wherein the position mounting structure comprising a connection plate, a first connector, a secondary connectors, an adjustable handle and a removable supporting structure; the connection plate is connected with the lower end of the upper section; the first connector is arranged between the two lower riser hollow plates and is connected with them; the first connector is located on one side of the secondary connector; both ends of the first connector are symmetrically provided with removable supporting structures; the other end of the removable supporting structure is connected with the connection plate in a detachable manner; the upper end of the adjustable handle is connected with the lower end of the connection plate by screws; the lower end of the adjustable handle is connected with the secondary connector by screws; the adjustable handle and the two removable supporting structure are arranged in a triangular shape; a bowstring suppressor is provided on the secondary connector; a cable guide is provided on the upper section.

wherein the pulley assembly comprising two main cams with different sizes and an cable let-off cam; the two main cams are coaxially arranged; the cable let-off cam is arranged at the side of the larger main cam; the two main cams are symmetrically arranged; the string assembly cooperates with the cable let-off cam and the main cams.

2. The compound bow of claim 1, wherein the upper section comprising two first upper riser hollow plates, a first connecting rod and a first fixed rod, wherein the first upper riser hollow plates is provided with first plurality of apertures; wherein the two first upper riser hollow plates are connected with the first connecting rod; both ends of the first connecting rod are respectively located in the corresponding first plurality of apertures; wherein two ends of the first fixed rod are respectively arranged in the first plurality of apertures corresponding to the ends of the first upper riser hollow plate; the first fixed rod is provided with first bolt hole; the upper limb is fixed in the first bolt hole by a screw; the connecting plate is arranged between two the first upper riser hollow plate and is connected with the first upper riser hollow plate; wherein a first supporting structure is arranged between the upper ends of the first upper riser hollow plate; the first supporting structure and the upper limb are matched for supporting the upper limb.

3. The compound bow of claim 1, wherein the upper section comprising a connecting hollow frame and a second connecting hollow plate; the lower end of the second connecting hollow plate is detachably arranged on the upper end of the connecting hollow frame; wherein the lower end of the connecting hollow frame is connected with the connecting plate; the upper end of the second connecting hollow plate is provided with a second bolt hole; wherein the upper limb 1 is fixed in the second bolt hole by a screw; the second connecting hollow plate is provided with a second supporting structures; wherein the second supporting structure connected with the upper limb and to support it.

4. The compound bow of claim 1, wherein the upper section comprising a hollow connector and a third connecting hollow plate; the third connecting hollow plate is symmetrically arranged on the upper end of the hollow connector; the third connecting hollow plate is fixedly connected to the connecting hollow frame; the third connecting hollow plate is provided with a second connecting rod; wherein the hollow connector is connected with the connecting plate; the two third connecting hollow plate are connected by the second connecting rod; wherein the second fixed rod is provided with a third bolt hole; the upper limb 1 is fixed in the third bolt hole by a screw; wherein a third supporting structure is arranged between the two third connecting hollow plates; the third supporting structure connected with the upper limb and to support it.

5. The compound bow of claim 1, wherein the string assembly comprising two cable strings and a bowstring; one ends of the two cable strings are respectively fixed on the sides of two different limbs; the other ends of the two cable strings are respectively fixed on the main cams; wherein both ends of the bowstrings are respectively wound around the main cams of upper and lower limbs; the cable strings cooperate with the cable guide; the bowstring cooperates with the bowstring suppressor.

6. The compound bow of claim 1, wherein the limbs are tilted arranged at symmetrical or asymmetrical position of both ends of the bow handle assembly.