Net rope fastener

Abstract

The utility model provides a net rope fastener, which relates to a net rope weaving device and comprises an outer sleeve and an inner sleeve, and a first protrusion is arranged on the inner wall of the outer sleeve. The inner sleeve is provided with a through hole matched with the first protrusion, and the first protrusion penetrates through the through hole. The inner sleeve is provided with a net rope through hole and a second protrusion, the inner sleeve is arranged in the outer sleeve in a sleeved mode through the net rope through hole, and the inner sleeve is rotationally connected with the outer sleeve; the second bulge and the first bulge extend into the net rope through hole; the radial cross-sectional area of the net rope through hole is changed by rotating the outer sleeve. By rotating the outer sleeve, the radial sectional area of the net rope through hole can be changed, so that the length of the net rope is adjusted, and the buckling piece can adapt to the application of the anti-falling net in different scenes through the design.

Description

Technical Field

[0001] The utility model relates to a net rope weaving device, in particular to a net rope buckling part. Background Art

[0002] During the construction process, in order to ensure the safety of workers and prevent the falling of materials such as concrete and steel bars, anti-fall nets can be used. The anti-fall nets can be fixed around the building, between the steel frame and the floor slab to protect workers in high construction areas, prevent workers, steel bars and concrete from falling from heights, reduce the pollution of the surrounding environment by construction waste, and reduce environmental pollution.

[0003] At present, the net rope is processed into a grid shape through fasteners to form an anti-fall net. The mesh size of most anti-fall nets on the market cannot be adjusted manually. Falling objects that are too small can easily pass through the anti-fall net, increasing safety risks and environmental pollution. Falling objects that are too large occupy a large amount of net ropes of the anti-fall net, which not only increases the investment cost, but also reduces the utilization efficiency of the anti-fall net. Utility Model Content

[0004] The purpose of the utility model is to provide a net rope buckle, and the technical problem to be solved is to meet the application of anti-fall nets in multiple scenarios.

[0005] The utility model is realized by the following technical solutions:

[0006] A net rope fastener comprises an outer sleeve and an inner sleeve.

[0007] The inner wall of the outer sleeve is provided with a first protrusion;

[0008] The inner sleeve is provided with a through hole adapted to the first protrusion, and the first protrusion is penetrated by the through hole;

[0009] The inner sleeve is provided with a net rope through hole and a second protrusion, the inner sleeve is sleeved in the outer sleeve through the net rope through hole, and the inner sleeve is rotatably connected with the outer sleeve;

[0010] The second protrusion and the first protrusion extend into the net rope passing hole;

[0011] The radial cross-sectional area of ​​the net rope passing hole can be changed by rotating the outer sleeve.

[0012] By rotating the outer sleeve, the radial cross-sectional area of ​​the net rope through the hole can be changed, thereby adjusting the length of the net rope. This design enables the fastener to adapt to the application of anti-fall nets in different scenarios, such as buildings and bridges of different heights or lengths.

[0013] Since the inner sleeve is rotatably connected to the outer sleeve, the net rope can be passed through the net rope hole by rotating the inner sleeve or the outer sleeve during installation, and the length of the net rope can also be conveniently adjusted. This makes the installation and adjustment process simpler and faster; by arranging the second protrusion and the first protrusion to extend into the net rope hole, the net rope can be prevented from slipping out of the hole. This design improves the safety of the anti-fall net and reduces the risk of accidents.

[0014] In summary, this fastener for anti-fall nets has more advantages than the current fasteners that cannot adjust the length of the net rope, and can better meet the application needs of anti-fall nets in multiple scenarios.

[0015] Furthermore, it also includes a first sleeve fixedly connected to the inner sleeve;

[0016] The first sleeve extends out of the outer sleeve;

[0017] The first sleeve is provided with a first center hole for the net rope to pass through, the first center hole is connected with the net rope through hole, and the aperture of the first center hole is larger than the aperture of the net rope through hole.

[0018] The first sleeve is provided with a first central hole for the net rope to pass through, the first central hole is connected with the net rope through hole, the first sleeve extends out of the outer sleeve, and the first sleeve is fixedly connected with the inner sleeve, and the outer sleeve is rotated by fixing the first sleeve, so that the installation and adjustment process is more convenient. During installation, the net rope can first pass through the first central hole of the first sleeve, and then pass through the net rope through hole to enter the inner sleeve. This design simplifies the installation steps and improves the installation efficiency.

[0019] Furthermore, the inner sleeve and the outer sleeve are connected via threads.

[0020] The stability and reliability of the fastener are increased; the inner sleeve and the outer sleeve are connected by threads, which can ensure that the fastener can withstand greater tension and pressure during use and is not easily damaged or failed; the connection between the inner sleeve and the outer sleeve is tighter and stronger through the threaded connection. This design structure makes the fastener more stable during use and is not easy to loosen or fall off.

[0021] During installation, the position and angle of the inner sleeve and the outer sleeve can be adjusted by rotating them so that the net rope can pass through the buckle correctly. At the same time, during the adjustment process, the length and tightness of the net rope can also be adjusted by rotating the inner sleeve and the outer sleeve to meet the application requirements in different scenarios.

[0022] In summary, connecting the inner sleeve and the outer sleeve by threading increases the stability and reliability of the fastening member, and improves its performance and service life.

[0023] Further, the first protrusion includes a plurality of first saw teeth, the first saw teeth include a first side portion, a second side portion and a third side portion, and the first side portion, the second side portion and the third side portion are spliced ​​to form a triangular first saw tooth;

[0024] The first side portion is connected to the inner wall of the outer sleeve;

[0025] From the first vertex after the second side portion is connected to the first side portion, gradually approaching the second vertex after the second side portion is connected to the third side portion, the distance from the second side portion to the inner wall of the outer sleeve gradually increases;

[0026] The distance from the third side portion to the inner wall of the outer sleeve gradually increases from the third vertex after the third side portion is connected to the first side portion to the second vertex after the third side portion is connected to the second side portion;

[0027] The first protrusion is formed by connecting the first vertex of any one of the adjacent first saw teeth with the third vertex of another first saw tooth.

[0028] By providing the first protrusion and adopting a special geometric shape and structure, the stability of the fastening piece and the strength when locking the net rope are further improved.

[0029] The first sawtooth adopts a triangular structure, which has high strength and reliability. By splicing the side parts of the first sawtooth to form a triangle, it can ensure that the fastener can withstand greater tension and pressure during use and is not easily damaged or failed;

[0030] Adjacent first saw teeth can form a complete first protrusion by connecting the first vertex of any first saw tooth with the third vertex of another first saw tooth; when locking the net rope, the third vertex on the first saw tooth is clamped in the net rope, and because the outer sleeve and the inner sleeve are connected by threads, they have self-locking properties, so that the relative position of the first protrusion and the second protrusion no longer changes, thereby achieving the locking of the net rope.

[0031] In summary, by providing the first protrusion and adopting a special geometric shape and structure, the stability of the fastening member and the strength when locking the net rope are further improved.

[0032] Further, the second protrusion includes a plurality of second saw teeth, the second saw teeth include a fourth side portion, a fifth side portion and a sixth side portion, and the fourth side portion, the fifth side portion and the sixth side portion are spliced ​​to form a triangular second saw tooth;

[0033] The fourth side portion is connected to the inner wall of the inner sleeve;

[0034] From the fourth vertex where the fifth side portion is connected to the fourth side portion, gradually approaching the fifth vertex where the fifth side portion is connected to the sixth side portion, the distance from the fifth side portion to the inner wall of the inner sleeve gradually increases;

[0035] From the sixth vertex where the sixth side portion is connected to the fourth side portion, gradually approaching the fifth vertex where the sixth side portion is connected to the fifth side portion, the distance from the sixth side portion to the inner wall of the inner sleeve gradually increases;

[0036] The second protrusion is formed by connecting the fourth vertex of any second saw tooth among the adjacent second saw teeth with the sixth vertex of another second saw tooth.

[0037] Because the several second vertices on the first protrusion correspond one to one with the several fifth vertices on the second protrusion when the outer sleeve is not rotated, the radial cross-sectional area of ​​the net rope through hole is the largest at this time; and the first protrusion and the second protrusion are both triangular structures, so when the above-mentioned outer sleeve is rotated, the relative position of the first protrusion and the second protrusion changes, so that the radial cross-sectional area of ​​the net rope through hole gradually decreases until the second vertex and the fifth vertex are engaged in the net rope, thereby achieving the locking of the net rope.

[0038] Furthermore, a plurality of the first saw teeth are spirally wound around the inner wall of the outer sleeve;

[0039] The plurality of second saw teeth are spirally arranged around the inner wall of the inner sleeve.

[0040] In order to match the threaded connection between the outer sleeve and the inner sleeve, when the outer sleeve is rotated, the distance that the outer sleeve moves along the axis of the inner sleeve, the first sawtooth and the second sawtooth are spirally wound on their respective inner walls, so that the first sawtooth can rotate around the through hole of the inner sleeve;

[0041] The spiral design can increase the friction of the fastener during use and reduce the risk of sliding and displacement. At the same time, this design also increases the strength and reliability of the fastener, enabling it to withstand greater tension and pressure; the spiral design makes the installation and adjustment process simpler and faster. Users can adjust the position and angle of the fastener by rotating the outer sleeve or the inner sleeve to meet the application requirements in different scenarios.

[0042] Furthermore, the first protrusion and the second protrusion are provided in plurality;

[0043] The second protrusions are arranged between adjacent first protrusions.

[0044] By providing a plurality of first protrusions and second protrusions, the fastener is more stable during use and is not prone to loosening or falling off. At the same time, the provision of multiple protrusions also increases the friction and gripping force of the fastener, making it more reliable; the provision of multiple protrusions can disperse pressure and tension, reduce the load borne by a single protrusion, and thus improve the strength and reliability of the fastener.

[0045] The first protrusions and the second protrusions are arranged alternately so that the net rope can be locked at multiple angles, thereby improving the tightening effect.

[0046] Furthermore, the spacing between adjacent first protrusions is equal to the spacing between adjacent second protrusions.

[0047] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0048] By rotating the outer sleeve, the radial cross-sectional area of ​​the net rope through the hole can be changed, thereby adjusting the length of the net rope. This design enables the fastener to adapt to the application of anti-fall nets in different scenarios, such as buildings and bridges of different heights or lengths.

[0049] Since the inner sleeve is rotatably connected to the outer sleeve, the net rope can be passed through the net rope hole by rotating the inner sleeve or the outer sleeve during installation, and the length of the net rope can also be conveniently adjusted. This makes the installation and adjustment process simpler and faster; by arranging the second protrusion and the first protrusion to extend into the net rope hole, the net rope can be prevented from slipping out of the hole. This design improves the safety of the anti-fall net and reduces the risk of accidents.

[0050] In summary, this fastener for anti-fall nets has more advantages than the current fasteners that cannot adjust the length of the net rope, and can better meet the application needs of anti-fall nets in multiple scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0052] Figure 1 A cross-sectional view of the net rope provided in Example 1, wherein the net rope is set in the fastening member;

[0053] Figure 2 for Figure 1 A cross-sectional view of the inner sleeve;

[0054] Figure 3 It is a schematic diagram of the structure of the first sawtooth and a schematic diagram of a plane of a first protrusion formed by the first sawtooth, or it is a schematic diagram of the structure of the second sawtooth and a schematic diagram of a plane of a second protrusion formed by the second sawtooth;

[0055] Figure 4 is a schematic diagram of the relative position relationship between the first protrusion and the second protrusion;

[0056] Figure 5 This is a top view of the net rope passing through the hole after the outer sleeve is rotated.

[0057] Marks and corresponding parts names in the attached drawings:

[0058] 10. Outer sleeve; 11. First protrusion; 12. First side; 13. Second side; 14. Third side; 15. First vertex; 16. Second vertex; 17. Third vertex; 20. Inner sleeve; 21. Second protrusion; 22. Net rope through hole; 23. Through hole; 24. Fourth side; 25. Fifth side; 26. Sixth side; 27. Fourth vertex; 28. Fifth vertex; 29. ​​Sixth vertex; 30. First sleeve; 31. First center hole; 40. Net rope. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0060] Example 1

[0061] This embodiment 1 provides a mesh rope fastening member, combined with Figure 1 and Figure 2 , comprising an outer sleeve 10 and an inner sleeve 20,

[0062] The inner wall of the outer sleeve 10 is provided with a first protrusion 11;

[0063] The inner sleeve 20 is provided with a through hole 23 adapted to the first protrusion 11, and the first protrusion 11 is penetrated by the through hole 23;

[0064] The inner sleeve 20 is provided with a net rope through hole 22 and a second protrusion 21. The inner sleeve 20 is sleeved in the outer sleeve 10 through the net rope through hole 22, and the inner sleeve 20 is rotatably connected with the outer sleeve 10.

[0065] The second protrusion 21 and the first protrusion 11 extend into the net rope through hole 22;

[0066] The outer sleeve 10 is rotated to change the radial cross-sectional area of ​​the net rope through hole 22 .

[0067] By rotating the outer sleeve 10, the radial cross-sectional area of ​​the net rope through hole 22 can be changed, thereby adjusting the length of the net rope 40. This design enables the buckle to adapt to the application of anti-fall nets in different scenarios, such as buildings and bridges of different heights or lengths.

[0068] Since the inner sleeve 20 is rotatably connected to the outer sleeve 10, the net rope 40 can be passed through the net rope through hole 22 by rotating the inner sleeve 20 or the outer sleeve 10 during installation, and the length of the net rope 40 can also be conveniently adjusted. This makes the installation and adjustment process simpler and faster; by arranging the second protrusion 21 and the first protrusion 11 to extend into the net rope through hole 22, the net rope 40 can be prevented from slipping out of the through hole. This design improves the safety of the anti-fall net and reduces the risk of accidents.

[0069] In summary, this fastener for the anti-fall net has more advantages than the current fasteners that cannot adjust the length of the net rope 40, and can better meet the application requirements of the anti-fall net in multiple scenarios.

[0070] Example 2

[0071] Based on Example 1, Figure 1 , further comprising a first sleeve 30 fixedly connected to the inner sleeve 20, wherein the diameter of the first sleeve 30 is greater than the diameter of the inner sleeve 20;

[0072] The first sleeve 30 extends out of the outer sleeve 10;

[0073] The first sleeve 30 is provided with a first central hole 31 for the mesh rope 40 to pass through. The first central hole 31 is connected to the mesh rope through hole 22 , and the aperture of the first central hole 31 is larger than the aperture of the mesh rope through hole 22 .

[0074] By providing a first center hole 31 for the net rope 40 to pass through on the first sleeve 30, the first center hole 31 is connected to the net rope through hole 22, the first sleeve 30 extends out of the outer sleeve 10, and the first sleeve 30 is fixedly connected to the inner sleeve 20, and the outer sleeve 10 is rotated by fixing the first sleeve 30, so that the installation and adjustment process is more convenient. During installation, the net rope 40 can first pass through the first center hole 31 of the first sleeve 30, and then pass through the net rope through hole 22 to enter the inner sleeve 20. This design simplifies the installation steps and improves the installation efficiency.

[0075] Example 3

[0076] Based on any of the above embodiments, Figures 3 to 5 The inner sleeve 20 and the outer sleeve 10 are connected by threads.

[0077] The stability and reliability of the fastener are increased; the inner sleeve 20 and the outer sleeve 10 are connected by threads, which can ensure that the fastener can withstand greater tension and pressure during use and is not easily damaged or failed; through the threaded connection, the connection between the inner sleeve 20 and the outer sleeve 10 is tighter and firmer. This design structure makes the fastener more stable during use and is not easy to loosen or fall off.

[0078] During installation, the position and angle of the inner sleeve 20 and the outer sleeve 10 can be adjusted by rotating them, so that the net rope 40 can pass through the buckle correctly. At the same time, during the adjustment process, the length and tightness of the net rope 40 can also be adjusted by rotating the inner sleeve 20 and the outer sleeve 10 to meet the application requirements in different scenarios.

[0079] In summary, the inner sleeve 20 and the outer sleeve 10 are connected by threads, which increases the stability and reliability of the fastening parts and improves their performance and service life.

[0080] The first protrusion 11 includes a plurality of first saw teeth, and the first saw teeth include a first side portion 12, a second side portion 13 and a third side portion 14. The first side portion 12, the second side portion 13 and the third side portion 14 are spliced ​​to form a triangular first saw tooth;

[0081] The first side portion 12 is connected to the inner wall of the outer sleeve 10;

[0082] From the first vertex 15 where the second side portion 13 is connected to the first side portion 12, gradually approaching the second vertex 16 where the second side portion 13 is connected to the third side portion 14, the distance from the second side portion 13 to the inner wall of the outer sleeve 10 gradually increases;

[0083] The third vertex 17 after the third side portion 14 is connected to the first side portion 12 gradually approaches the second vertex 16 after the third side portion 14 is connected to the second side portion 13, and the distance from the third side portion 14 to the inner wall of the outer sleeve 10 gradually increases;

[0084] The first protrusion 11 is formed by connecting the first vertex 15 of any one of the adjacent first saw teeth with the third vertex 17 of another first saw tooth.

[0085] By providing the first protrusion 11 and adopting a special geometric shape and structure, the stability of the fastening member and the strength when locking the net rope 40 are further improved.

[0086] The first sawtooth adopts a triangular structure, which has high strength and reliability. By splicing the side parts of the first sawtooth to form a triangle, it can ensure that the fastener can withstand greater tension and pressure during use and is not easily damaged or failed;

[0087] Adjacent first saw teeth can form a complete first protrusion 11 by connecting the first vertex 15 of any first saw tooth with the third vertex 17 of another first saw tooth; when locking the net rope 40, the third vertex 17 on the first saw tooth is clamped in the net rope 40, and because the outer sleeve 10 and the inner sleeve 20 are connected by threads, they have self-locking properties, so that the relative position of the first protrusion 11 and the second protrusion 21 no longer changes, thereby achieving the locking of the net rope 40.

[0088] In summary, by providing the first protrusion 11 and adopting a special geometric shape and structure, the stability of the buckle and the strength when locking the net rope 40 are further improved.

[0089] In a specific embodiment, the second protrusion 21 includes a plurality of second saw teeth, and the second saw teeth include a fourth side portion 24, a fifth side portion 25 and a sixth side portion 26. The fourth side portion 24, the fifth side portion 25 and the sixth side portion 26 are spliced ​​to form a triangular second saw tooth.

[0090] The fourth side portion 24 is connected to the inner wall of the inner sleeve 20;

[0091] From the fourth vertex 27 where the fifth side portion 25 is connected to the fourth side portion 24, gradually approaching the fifth vertex 28 where the fifth side portion 25 is connected to the sixth side portion 26, the distance from the fifth side portion 25 to the inner wall of the inner sleeve 20 gradually increases;

[0092] The sixth vertex 29 where the sixth side portion 26 is connected to the fourth side portion 24 gradually approaches the fifth vertex 28 where the sixth side portion 26 is connected to the fifth side portion 25, and the distance from the sixth side portion 26 to the inner wall of the inner sleeve 20 gradually increases;

[0093] The second protrusion 21 is formed by connecting the fourth vertex 27 of any second sawtooth among the adjacent second sawtooths with the sixth vertex 29 of another second sawtooth.

[0094] Because the several second vertices 16 on the first protrusion 11 and the several fifth vertices 28 on the second protrusion 21 correspond one to one when the outer sleeve 10 is not rotated, the radial cross-sectional area of ​​the net rope through hole 22 is the largest at this time; and the first protrusion 11 and the second protrusion 21 are both triangular structures, so when the above-mentioned outer sleeve 10 is rotated, the relative position of the first protrusion 11 and the second protrusion 21 changes, so that the radial cross-sectional area of ​​the net rope through hole 22 gradually decreases until the second vertices 16 and the fifth vertices 28 are engaged in the net rope 40, thereby achieving the locking of the net rope 40.

[0095] Example 4

[0096] On the basis of Example 3, Figure 4 As shown, a plurality of the first saw teeth are spirally arranged around the inner wall of the outer sleeve 10;

[0097] The plurality of second saw teeth are spirally arranged around the inner wall of the inner sleeve 20 .

[0098] In order to match the threaded connection between the outer sleeve 10 and the inner sleeve 20, when the outer sleeve 10 is rotated, the outer sleeve 10 moves along the axis of the inner sleeve 20, and the first sawtooth and the second sawtooth are spirally wound on their respective inner walls, so that the first sawtooth can rotate around the through hole 23 of the inner sleeve 20;

[0099] The spiral design can increase the friction of the fastener during use and reduce the risk of sliding and displacement. At the same time, this design also increases the strength and reliability of the fastener, enabling it to withstand greater tension and pressure; the spiral design makes the installation and adjustment process simpler and faster. The user can adjust the position and angle of the fastener by rotating the outer sleeve 10 or the inner sleeve 20 to meet the application requirements in different scenarios.

[0100] Example 5

[0101] Based on any of the above embodiments, Figure 4 As shown, the first protrusion 11 and the second protrusion 21 are provided in plurality;

[0102] The second protrusions 21 are disposed between adjacent first protrusions 11 .

[0103] By providing a plurality of first protrusions 11 and second protrusions 21, the fastener is more stable during use and is not prone to loosening or falling off. At the same time, the provision of multiple protrusions also increases the friction and gripping force of the fastener, making it more reliable; the provision of multiple protrusions can disperse pressure and tension, reduce the load borne by a single protrusion, and thus improve the strength and reliability of the fastener.

[0104] The first protrusions 11 and the second protrusions 21 are arranged alternately so that the net rope 40 can be locked at multiple angles, thereby improving the tightening effect.

[0105] In a specific embodiment, the distance between adjacent first protrusions 11 is equal to the distance between adjacent second protrusions 21 .

[0106] The use of the device:

[0107] Rotate the outer sleeve 10 to make the corresponding second vertex 16 and fifth vertex 28 on the same straight line, then pass the net rope through the first center hole 31 and the net rope through hole 22 in sequence, adjust the position of the net rope 40, and after adjustment, rotate the outer sleeve 10 to gradually stagger the second vertex 16 and the fifth vertex 28, and the radial cross-sectional area of ​​the net rope through hole 22 will also be reduced until the net rope 40 is pulled and the net rope 40 no longer moves, thus achieving locking.

[0108] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A net rope fastener, characterized in that: It comprises an outer sleeve (10) and an inner sleeve (20), The inner wall of the outer sleeve (10) is provided with a first protrusion (11); The inner sleeve (20) is provided with a through hole (23) adapted to the first protrusion (11), and the first protrusion (11) is penetrated by the through hole (23); The inner sleeve (20) is provided with a net rope through hole (22) and a second protrusion (21); the inner sleeve (20) is sleeved in the outer sleeve (10) through the net rope through hole (22), and the inner sleeve (20) is rotatably connected to the outer sleeve (10); The second protrusion (21) and the first protrusion (11) extend into the net rope through hole (22); The outer sleeve (10) is rotated to change the radial cross-sectional area of ​​the net rope passing hole (22).

2. A net rope fastener according to claim 1, characterized in that: It also includes a first sleeve (30) fixedly connected to the inner sleeve (20); The first sleeve (30) extends out of the outer sleeve (10); The first sleeve (30) is provided with a first central hole (31) for the net rope (40) to pass through, the first central hole (31) is connected to the net rope through hole (22), and the aperture of the first central hole (31) is larger than the aperture of the net rope through hole (22).

3. The net rope fastener according to claim 1, characterized in that: The inner sleeve (20) is connected to the outer sleeve (10) via threads.

4. The net rope fastener according to claim 1, characterized in that: The first protrusion (11) comprises a plurality of first saw teeth, wherein the first saw teeth comprise a first side portion (12), a second side portion (13) and a third side portion (14), and the first side portion (12), the second side portion (13) and the third side portion (14) are spliced ​​to form a triangular first saw tooth; The first side portion (12) is connected to the inner wall of the outer sleeve (10); The distance from the second side portion (13) to the inner wall of the outer sleeve (10) gradually increases from a first vertex (15) after the second side portion (13) is connected to the first side portion (12) to a second vertex (16) after the second side portion (13) is connected to the third side portion (14); A third vertex (17) after the third side portion (14) is connected to the first side portion (12) gradually approaches a second vertex (16) after the third side portion (14) is connected to the second side portion (13), and a distance from the third side portion (14) to the inner wall of the outer sleeve (10) gradually increases; The first protrusion (11) is formed by connecting the first vertex (15) of any one of the adjacent first saw teeth with the third vertex (17) of another first saw tooth.

5. The net rope fastener according to claim 4, characterized in that: The second protrusion (21) comprises a plurality of second saw teeth, the second saw teeth comprising a fourth side portion (24), a fifth side portion (25) and a sixth side portion (26), the fourth side portion (24), the fifth side portion (25) and the sixth side portion (26) being spliced ​​to form a triangular second saw tooth; The fourth side portion (24) is connected to the inner wall of the inner sleeve (20); From the fourth vertex (27) where the fifth side portion (25) is connected to the fourth side portion (24), gradually approaching the fifth vertex (28) where the fifth side portion (25) is connected to the sixth side portion (26), the distance from the fifth side portion (25) to the inner wall of the inner sleeve (20) gradually increases; From the sixth vertex (29) where the sixth side portion (26) is connected to the fourth side portion (24), it gradually approaches the fifth vertex (28) where the sixth side portion (26) is connected to the fifth side portion (25), and the distance from the sixth side portion (26) to the inner wall of the inner sleeve (20) gradually increases; The second protrusion (21) is formed by connecting the fourth vertex (27) of any second saw tooth among the adjacent second saw teeth with the sixth vertex (29) of another second saw tooth.

6. The net rope fastener according to claim 5, characterized in that: A plurality of the first saw teeth are spirally arranged around the inner wall of the outer sleeve (10); A plurality of the second saw teeth are spirally arranged around the inner wall of the inner sleeve (20).

7. The net rope fastener according to claim 6, characterized in that: A plurality of the first protrusions (11) and the second protrusions (21) are provided; The second protrusion (21) is arranged between adjacent first protrusions (11).

8. The net rope fastener according to claim 7, characterized in that: The spacing between adjacent first protrusions (11) is equal to the spacing between adjacent second protrusions (21).

Images