Anti-cracking pu bowstring wire
By introducing a buffer sleeve, compression sleeve, mounting base, and inner sheath into the PU slingshot line, the problem of cracking caused by uneven stress in the slingshot line is solved, thus achieving crack prevention and connection stability of the slingshot line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHENGYI ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-03-19
- Publication Date
- 2026-06-12
AI Technical Summary
PU slingshot cords are prone to cracking due to stress buildup caused by friction, bending, or twisting during use, posing a safety risk.
The design incorporates a spiral section, a straight section, a buffer sleeve, a compression sleeve, a mounting base, and a plug. Combined with components such as an inner sheath, conductor, insulation layer, and steel strip armor, it enhances the toughness and connection stability of the slingshot line and prevents cracking.
It effectively prevents cracking of the slingshot line end and interior due to uneven stress, thus improving the durability and safety of the slingshot line.
Smart Images
Figure CN224355011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slingshot line technology, specifically a crack-resistant PU slingshot line. Background Technology
[0002] PU slingshot cable, also known as spring cable or spiral cable, is a type of equipment connection cable that utilizes its stretchability and is widely used in various industrial equipment.
[0003] During use, spring wires may rub against other objects. Over time, wear, bending, or twisting can cause stress to build up in the internal metal wires. This stress can accumulate over time and lead to cracking of the outer sheath. If cracks in PU slingshot wires are not repaired in time, they pose a certain safety risk. To reduce the occurrence of cracks in PU slingshot wires...
[0004] Now, a crack-resistant PU slingshot line is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a crack-resistant PU slingshot line to solve the problem of PU slingshot lines being prone to cracking as mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a crack-resistant PU slingshot line, comprising a spiral segment, a first straight segment movably connected to the left side of the spiral segment, a second straight segment movably connected to the right side of the spiral segment, a first buffer sleeve fitted on the outer side of the junction of the spiral segment and the first straight segment, a second buffer sleeve fitted on the outer side of the junction of the spiral segment and the second straight segment, a first compression sleeve fitted on the left end of the outer side of the first straight segment, and a second compression sleeve fitted on the right end of the outer side of the second straight segment.
[0007] As a further technical solution of this utility model, the inner diameter of the first buffer sleeve matches the outer diameter of the spiral segment and the first straight segment, and the inner diameter of the second buffer sleeve matches the outer diameter of the spiral segment and the second straight segment.
[0008] As a further technical solution of this utility model, the inner diameter of the first compression sleeve matches the outer diameter of the first straight segment, and the first straight segment and the first compression sleeve are tightly fitted together; the inner diameter of the second compression sleeve matches the outer diameter of the second straight segment, and the second compression sleeve and the second straight segment are tightly fitted together.
[0009] As a further technical solution of this utility model, a first mounting base is fixedly connected to the left side of the first straight segment, a first plug is installed on the left side of the first mounting base, a movable ring is movably connected to the outer side of the first mounting base, and a first thread is provided inside the movable ring. A second mounting base is fixedly connected to the right side of the second straight segment, a second plug is installed on the right side of the second mounting base, and a second thread is provided on the outer layer of the second mounting base.
[0010] As a further technical solution of this utility model, the size of the second plug matches the size of the first plug, and the second plug can be inserted into the interior of the first plug of another slingshot line.
[0011] As a further technical solution of this utility model, the second thread engages with the first thread, and the movable ring can slide left and right on the outside of the second thread of another slingshot line.
[0012] As a further technical solution of this utility model, the spiral segment, the first straight segment, and the second straight segment are provided with an inner sheath. The inner sheath is provided with multiple sets of conductors. The conductors are wrapped with conductor shields on the outside. The conductor shields are wrapped with an insulating layer on the outside. The insulating layer is wrapped with an insulating shield on the outside. A ground wire is provided on the right side inside the inner sheath. The inner sheath is filled with polypropylene filler. The polypropylene filler is provided with multiple sets of filling columns inside. The outer side of the inner sheath is wrapped with steel strip armor. The steel strip armor is provided with multiple sets of support rods inside. The outer side of the steel strip armor is wrapped with an outer sheath.
[0013] As a further technical solution of this utility model, the multiple sets of conductors are arranged symmetrically, and the multiple sets of support rods are evenly distributed inside the steel strip armor.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the crack-resistant PU slingshot not only prevents cracking at the end of the slingshot from the outside, but also connects two sets of PU slingshots, and prevents cracking due to uneven force from the inside.
[0015] (1) By setting a first buffer sleeve, a second buffer sleeve, a first compression sleeve and a second compression sleeve, when in use, the first buffer sleeve is put on the outside of the junction of the spiral segment and the first straight segment, and the second buffer sleeve is put on the outside of the junction of the spiral segment and the second straight segment. The setting of the first buffer sleeve and the second buffer sleeve can effectively buffer the force between the buffer segment and the straight segment, and reduce the cracking phenomenon at the junction. The first compression sleeve is put on the left end of the outside of the first straight segment, and the second compression sleeve is put on the right end of the outside of the second straight segment. The first compression sleeve fits tightly with the first straight segment, and the second compression sleeve fits tightly with the second straight segment, thereby avoiding the cracking phenomenon at the end of the elastic line.
[0016] (2) By setting a first mounting base, a first plug, a movable ring, a first thread, a second mounting base, a second plug, and a second thread, the use of elastic cord is mostly to reduce space and avoid the circuit process from becoming messy. However, it often results in a short distance of elastic cord. By fixing the first mounting base to the left side of the first straight section, installing the first plug on the left side of the first mounting base, fixing the second mounting base to the right side of the second straight section, and installing the second plug on the right side of the second mounting base, when the two sets of elastic cords intersect, the second plug can be inserted into the first plug. The movable ring is manually turned to the left, and the first thread and the second thread mesh, thereby fixing the first plug and the second plug, and thus connecting the two sets of PU elastic cords.
[0017] (3) By setting up an inner sheath, conductor, conductor shield, insulation layer, insulation shield, ground wire, filler, polypropylene filler, steel strip armor, support rod and outer sheath, when in use, polypropylene filler and interspersed filler columns are filled inside the inner sheath, and steel strip armor is set on the outside of the inner sheath. The steel strip armor is surrounded by a tight support rod, so that the entire PU sling is in a full cylindrical state, which enhances the toughness of the PU sling itself and avoids cracking due to uneven stress from the inside. Attached Figure Description
[0018] Figure 1 This is a frontal cross-sectional view of the present invention.
[0019] Figure 2 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle section;
[0020] Figure 3 For the present utility model Figure 1 Enlarged cross-sectional view of section B in the middle section;
[0021] Figure 4 This is a side view sectional structural diagram of the first straight segment of this utility model.
[0022] In the diagram: 1. Spiral segment; 2. First straight segment; 3. Second straight segment; 4. First buffer sleeve; 5. Second buffer sleeve; 6. First compression sleeve; 7. Second compression sleeve; 8. First mounting base; 9. First plug; 10. Movable ring; 11. First thread; 12. Second mounting base; 13. Second plug; 14. Second thread; 15. Inner sheath; 16. Conductor; 17. Conductor shield; 18. Insulation layer; 19. Insulation shield; 20. Ground wire; 21. Filler post; 22. Polypropylene filler; 23. Steel strip armor; 24. Support rod; 25. Outer sheath. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example: Please refer to Figure 1-4 A crack-resistant PU slingshot line includes a spiral segment 1, a first straight segment 2 movably connected to the left side of the spiral segment 1, a second straight segment 3 movably connected to the right side of the spiral segment 1, a first buffer sleeve 4 sleeved on the outer side of the junction of the spiral segment 1 and the first straight segment 2, a second buffer sleeve 5 sleeved on the outer side of the junction of the spiral segment 1 and the second straight segment 3, a first tightening sleeve 6 sleeved on the left end of the outer side of the first straight segment 2, and a second tightening sleeve 7 sleeved on the right end of the outer side of the second straight segment 3.
[0025] The inner diameter of the first buffer sleeve 4 matches the outer diameter of the spiral section 1 and the first straight section 2. The inner diameter of the second buffer sleeve 5 matches the outer diameter of the spiral section 1 and the second straight section 3. The inner diameter of the first tightening sleeve 6 matches the outer diameter of the first straight section 2. The first straight section 2 and the first tightening sleeve 6 fit together tightly. The inner diameter of the second tightening sleeve 7 matches the outer diameter of the second straight section 3. The second tightening sleeve 7 and the second straight section 3 fit together tightly.
[0026] Specifically, such as Figure 1 As shown, in use, a first buffer sleeve 4 is fitted onto the outside of the junction of the spiral segment 1 and the first straight segment 2, and a second buffer sleeve 5 is fitted onto the outside of the junction of the spiral segment 1 and the second straight segment 3. The first buffer sleeve 4 and the second buffer sleeve 5 can effectively buffer the force between the buffer segment and the straight segment, reducing the occurrence of cracking at the junction. A first tightening sleeve 6 is fitted onto the left end of the outside of the first straight segment 2, and a second tightening sleeve 7 is fitted onto the right end of the outside of the second straight segment 3. The first tightening sleeve 6 fits tightly with the first straight segment 2, and the second tightening sleeve 7 fits tightly with the second straight segment 3, thereby preventing cracking at the end of the elastic line.
[0027] The first straight segment 2 is fixedly connected to the left side of the first mounting base 8, and the first plug 9 is installed on the left side of the first mounting base 8. The outer side of the first mounting base 8 is movably connected to the movable ring 10, and the movable ring 10 has a first thread 11 inside. The second straight segment 3 is fixedly connected to the right side of the second mounting base 12, and the second plug 13 is installed on the right side of the second mounting base 12. The outer layer of the second mounting base 12 has a second thread 14. The size of the second plug 13 matches the size of the first plug 9. The second plug 13 can be inserted into the interior of the first plug 9 of another slingshot line. The second thread 14 and the first thread 11 are engaged. The movable ring 10 can slide left and right on the outer side of the second thread 14 of the other slingshot line.
[0028] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the use of elastic cords is mainly to reduce space and avoid tangling during the wiring process. However, this often results in a short distance between the elastic cords. A first mounting base 8 is fixedly connected to the left side of the first straight segment 2, and a first plug 9 is installed on the left side of the first mounting base 8. A second mounting base 12 is fixedly connected to the right side of the second straight segment 3, and a second plug 13 is installed on the right side of the second mounting base 12. When the two sets of elastic cords intersect, the second plug 13 can be inserted into the first plug 9. By manually turning the movable ring 10 to the left, the first thread 11 and the second thread 14 engage, thereby fixing the first plug 9 and the second plug 13, and thus connecting the two sets of PU elastic cords.
[0029] The inner sheath 15 is provided inside the spiral segment 1, the first straight segment 2, and the second straight segment 3. The inner sheath 15 is provided with multiple sets of conductors 16. The conductors 16 are wrapped with conductor shields 17. The conductor shields 17 are wrapped with insulation layers 18. The insulation layers 18 are wrapped with insulation shields 19. The ground wire 20 is provided on the right side inside the inner sheath 15. The inner sheath 15 is filled with polypropylene filler 22. The polypropylene filler 22 is provided with multiple sets of filler columns 21. The outer side of the inner sheath 15 is wrapped with steel strip armor 23. The steel strip armor 23 is provided with multiple sets of support rods 24. The outer side of the steel strip armor 23 is wrapped with an outer sheath 25. The multiple sets of conductors 16 are arranged symmetrically. The multiple sets of support rods 24 are evenly distributed inside the steel strip armor 23.
[0030] Specifically, such as Figure 1 and Figure 4 As shown, during use, polypropylene filler 22 and interlaced filler columns 21 are filled inside the inner sheath 15, and steel band armor 23 is set on the outside of the inner sheath 15. The steel band armor 23 is surrounded by a tight support rod 24, so that the entire PU slingshot line is in a full cylindrical state, which enhances the toughness of the PU slingshot line itself and avoids cracking due to uneven stress from the inside.
[0031] Working Principle: In use, this invention firstly, a first buffer sleeve 4 is fitted onto the outer side of the junction of the spiral segment 1 and the first straight segment 2, and a second buffer sleeve 5 is fitted onto the outer side of the junction of the spiral segment 1 and the second straight segment 3. The first buffer sleeve 4 and the second buffer sleeve 5 effectively buffer the force between the buffer segment and the straight segment, reducing the likelihood of cracking at the junction. A first tightening sleeve 6 is fitted onto the left end of the outer side of the first straight segment 2, and a second tightening sleeve 7 is fitted onto the right end of the outer side of the second straight segment 3. The first tightening sleeve 6 fits tightly against the first straight segment 2, and the second tightening sleeve 7 fits tightly against the second straight segment 3, thus preventing cracking at the end of the elastic cord. Secondly, elastic cords are often used to reduce space and prevent tangling during the circuit process; however, this often results in a short distance between the elastic cords. By fixing a first mounting sleeve to the left side of the first straight segment 2... The first mounting base 8 has a first plug 9 installed on its left side and a second mounting base 12 fixedly connected to its right side. The second mounting base 12 has a second plug 13 installed on its right side. When the two sets of elastic cords intersect, the second plug 13 can be inserted into the first plug 9. The movable ring 10 is manually turned to the left, and the first thread 11 and the second thread 14 mesh, thereby fixing the first plug 9 and the second plug 13 and connecting the two sets of PU elastic cords. At the same time, by filling the inner sheath 15 with polypropylene filler 22 and inserting filler pillars 21, and setting a steel band armor 23 on the outside of the inner sheath 15, the steel band armor 23 is surrounded by a tight support rod 24, so that the entire PU elastic cord is in a full cylindrical state, which enhances the toughness of the PU elastic cord itself and avoids cracking due to uneven stress from the inside.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A crack-resistant PU slingshot line, comprising a spiral segment (1), characterized in that: The left side of the spiral segment (1) is movably connected to the first straight segment (2), and the right side of the spiral segment (1) is movably connected to the second straight segment (3). The outer side of the intersection of the spiral segment (1) and the first straight segment (2) is fitted with a first buffer sleeve (4), and the outer side of the intersection of the spiral segment (1) and the second straight segment (3) is fitted with a second buffer sleeve (5). The left end of the outer side of the first straight segment (2) is fitted with a first tightening sleeve (6), and the right end of the outer side of the second straight segment (3) is fitted with a second tightening sleeve (7).
2. The crack-resistant PU slingshot line according to claim 1, characterized in that: The inner diameter of the first buffer sleeve (4) matches the outer diameter of the spiral segment (1) and the first straight segment (2), and the inner diameter of the second buffer sleeve (5) matches the outer diameter of the spiral segment (1) and the second straight segment (3).
3. The crack-resistant PU slingshot line according to claim 1, characterized in that: The inner diameter of the first compression sleeve (6) matches the outer diameter of the first straight segment (2), and the first straight segment (2) and the first compression sleeve (6) fit together tightly. The inner diameter of the second compression sleeve (7) matches the outer diameter of the second straight segment (3), and the second compression sleeve (7) and the second straight segment (3) fit together tightly.
4. The crack-resistant PU slingshot line according to claim 1, characterized in that: A first mounting base (8) is fixedly connected to the left side of the first straight segment (2). A first plug (9) is installed on the left side of the first mounting base (8). A movable ring (10) is movably connected to the outer side of the first mounting base (8). A first thread (11) is opened inside the movable ring (10). A second mounting base (12) is fixedly connected to the right side of the second straight segment (3). A second plug (13) is installed on the right side of the second mounting base (12). A second thread (14) is opened on the outer layer of the second mounting base (12).
5. The crack-resistant PU slingshot line according to claim 4, characterized in that: The second plug (13) is sized to match the first plug (9), and the second plug (13) can be inserted into the interior of the first plug (9) of another slingshot line.
6. The crack-resistant PU slingshot line according to claim 4, characterized in that: The second thread (14) engages with the first thread (11), and the movable ring (10) can slide left and right on the outside of the second thread (14) of the other slingshot line.
7. The crack-resistant PU slingshot line according to claim 1, characterized in that: The spiral segment (1), the first straight segment (2), and the second straight segment (3) are provided with an inner sheath (15). The inner sheath (15) is provided with multiple sets of conductors (16). The conductors (16) are wrapped with conductor shields (17) on the outside. The conductor shields (17) are wrapped with insulation layers (18) on the outside. The insulation layers (18) are wrapped with insulation shields (19) on the outside. The inner sheath (15) is provided with a ground wire (20) on the right side. The inner sheath (15) is filled with polypropylene filler (22). The polypropylene filler (22) is provided with multiple sets of filling columns (21) on the inside. The inner sheath (15) is wrapped with steel strip armor (23) on the outside. The steel strip armor (23) is provided with multiple sets of support rods (24) on the inside. The steel strip armor (23) is wrapped with an outer sheath (25) on the outside.
8. The crack-resistant PU slingshot line according to claim 7, characterized in that: The multiple sets of conductors (16) are arranged symmetrically, and the multiple sets of support rods (24) are evenly distributed inside the steel strip armor (23).