A bundling band with adjustable tightness
By combining the design of connecting belts, fixing belts, rotating rollers and clamping components, the problem of force transmission difficulty when binding loose goods is solved, achieving steady tightening and secure binding, and improving the strength and operational efficiency of the binding straps.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LIKA RIGGING HARDWARE FACTORY
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-07
AI Technical Summary
Existing lashing straps are difficult to continuously transmit tension when binding loose goods, resulting in a sharp increase in the resistance of the toothed straps, making it difficult to tighten completely. Furthermore, they have weak compressibility after the goods are compacted, making them prone to loosening.
The design employs a combination of connecting belts, fixing belts, rotating rollers, and clamping components. Through mechanical transmission and meshing, the fixing belt is stably pulled. Combined with the clamping structure of compression springs and threaded rods, the fixing belt is steadily tightened and locked in one direction, enhancing the binding stability.
It effectively overcomes the resistance to compression deformation of fluffy goods, ensuring that the fixing straps can tighten steadily, improving the firmness and stability of the binding, and maintaining tightness when the goods are bumpy or subjected to force fluctuations, making operation smooth and labor-saving.
Smart Images
Figure CN224466548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of binding strap technology, and in particular to a binding strap with adjustable tightness. Background Technology
[0002] Bundles, also known as cargo straps, are used to secure goods during transportation, movement, loading, or storage. They are locking, will not come loose, are safe and reliable, lightweight, easy to operate, and protect objects from damage.
[0003] Currently, some existing binding straps use toothed bands and locking buckles to secure items. During operation, the toothed band is inserted into the locking buckle and pulled tight. The toothed structure on the surface of the band engages with the internal latches of the buckle, creating a stable locking state and securing the item. However, when binding loosely packed goods, which contain numerous gaps and have a loose structure with weak compression resistance, the pulling force initially acts on the goods themselves, causing compression deformation. As the goods become more compacted, the pulling resistance of the toothed band increases dramatically, often making it difficult to tighten completely after pulling a short distance. Utility Model Content
[0004] To solve the above problems, this utility model provides a binding strap with adjustable tightness.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a tension-adjustable binding strap, including a base plate, a connecting strap connected to one side of the base plate, a fixing strap connected to the end of the connecting strap away from the base plate, a plurality of vertical teeth spaced apart on one side of the fixing strap, the tooth surface of the vertical teeth adjacent to the connecting strap being perpendicular to the strap surface of the fixing strap, and the strap surface on the other side being an inclined surface, two vertical plates spaced apart on the base plate, two vertically spaced rotating rollers rotatably arranged between the two vertical plates, one of the rotating rollers having a plurality of first tooth grooves spaced apart circumferentially to cooperate with the vertical teeth, one of the rotating rollers being provided with a rotating handle, and a clamping assembly also being provided on the base plate.
[0006] By adopting the above technical solution, a connecting belt, a fixing belt, a rotating roller, and a first toothed groove are set up. The fixing belt is inserted between two rotating rollers, so that the vertical teeth on the fixing belt engage with the first toothed groove, while the belt surface away from the vertical teeth contacts the roller surface of the other rotating roller. When the handle is turned, the rotating roller connected to the handle rotates accordingly. Through the meshing action of the vertical teeth and the first toothed groove, the fixing belt is stably pulled. When binding loose goods, pulling the fixing belt through mechanical transmission, compared to simply relying on manual pulling, can more efficiently transmit force to the fixing belt, effectively overcoming the resistance caused by the compression deformation of loose goods, allowing the fixing belt to tighten steadily into place. This enables the loose goods to be bound tightly, greatly improving the strength and stability of the binding.
[0007] Furthermore, the clamping assembly includes two vertical plates spaced apart on the base plate, a support plate between the two vertical plates, a top plate between the tops of the two vertical plates, four mounting tubes arranged in a rectangular array vertically on the bottom surface of the top plate, slide rods slidably mounted inside the mounting tubes, a lifting plate is provided at the lower ends of the four slide rods, compression springs are sleeved on the mounting tubes, and second tooth grooves that cooperate with the vertical teeth are spaced apart on the bottom surface of the lifting plate.
[0008] By adopting the above technical solution, a vertical plate, support plate, top plate, mounting tube, lifting plate, and compression spring are installed. When the fixing strap is pulled backward, it passes between the support plate and the lifting plate. The compression spring always provides a downward thrust to the lifting plate. During the backward movement of the fixing strap, the inclined surface of the vertical tooth contacts the second tooth groove. As the pulling action continues, the upward component force generated by the inclined surface pushes the lifting plate upward against the spring force, and the compression spring is compressed accordingly, leaving space for the smooth movement of the fixing strap. When the vertical tooth moves to align with the next second tooth groove, the compression spring will push the lifting plate back to its original position under the action of the spring force, allowing the second tooth groove to engage with the vertical tooth, forming a firm one-way lock. When the fixing strap tends to retreat due to the rebound force of the goods or external disturbance, the tight engagement between the second tooth groove and the vertical tooth firmly restricts the reverse movement of the fixing strap, thereby stably maintaining the tightened state and ensuring that loose goods are always bundled.
[0009] Furthermore, the lifting plate is provided with a control plate that is in the shape of an inverted U. The top of the control plate has a through hole and the top plate has a threaded hole. A threaded rod is spirally arranged in the threaded hole. The threaded rod is parallel to the slide rod. The upper end of the threaded rod is provided with a rotating handle and the lower end is provided with a contact block passing through the through hole.
[0010] By adopting the above technical solution, a threaded rod, a rotating handle, and a contact block are installed. After the connecting strap secures the object, rotating the handle drives the threaded rod to rotate, causing it to move downwards relative to the top plate. This causes the contact block to descend synchronously and press against the lifting plate. Under the pressure of the contact block, the lifting plate forms a stronger clamping force with the support plate, firmly clamping the strap. Even under long-term bumps or force fluctuations, it prevents the strap from failing due to slight loosening, further enhancing the stability of the binding. When it is necessary to release the strap, rotating the handle in the opposite direction raises the threaded rod, causing the contact block to move upwards. When the contact block contacts the control plate, it continues to rise, using the control plate to drive the lifting plate to overcome the spring force of the compression spring and lift upwards, allowing the second tooth groove to completely separate from the vertical tooth. At this point, the strap loses its locking constraint and can be easily pulled to release the goods. The operation is smooth and effortless, improving operational efficiency.
[0011] Furthermore, the rotating roller is provided with trunnions at both ends, and the trunnions are rotatably connected to the upright plate. One of the trunnions passes through the upright plate, and the rotating handle is connected to the trunnion that passes through the upright plate.
[0012] By adopting the above technical solution and setting the trunnion, the stability of the rotating roller is ensured.
[0013] Furthermore, a gear is provided on one of the trunnions of the two rotating rollers, passing through the vertical plate, and the two gears mesh.
[0014] By adopting the above technical solution and setting gears, when the handle is turned to drive one of the rotating rollers to rotate, the gear connected to it will also rotate. Through the meshing of the gears, the other gear and its corresponding rotating roller will be driven to rotate synchronously in the opposite direction. The coordinated rotation of the two rotating rollers can transmit traction force more stably, making the pulling process of the fixed belt smoother and more stable.
[0015] Furthermore, retaining rings are fixedly sleeved at both ends of the rotating roller.
[0016] By adopting the above technical solution, retaining rings are fixedly sleeved at both ends of the rotating roller, and the retaining rings limit the position of the fixed belt.
[0017] Furthermore, the base plate has an installation groove on the side adjacent to the upright plate, and installation blocks are provided on both sides of the installation groove. A guide roller is rotatably arranged between the two installation blocks, and an annular guide groove is provided on the guide roller. One side of the fixing belt contacts the bottom of the guide groove.
[0018] By adopting the above technical solution, the fixing belt is guided to avoid friction and wear between the fixing belt and the base plate.
[0019] Furthermore, a funnel-shaped guide tube is provided on the side of the support plate near the rotating roller.
[0020] In summary, this utility model has the following beneficial effects: This application includes a connecting belt, a fixing belt, a rotating roller, and a first toothed groove. The fixing belt is inserted between two rotating rollers, so that the vertical teeth on the fixing belt engage with the first toothed groove, while the belt surface away from the vertical teeth contacts the roller surface of the other rotating roller. When the handle is turned, the rotating roller connected to the handle rotates accordingly. Through the meshing of the vertical teeth and the first toothed groove, the fixing belt is stably pulled. When binding loose goods, pulling the fixing belt via mechanical transmission, compared to simply relying on manual pulling, can more efficiently transmit force to the fixing belt, effectively overcoming the resistance caused by the compression deformation of loose goods, allowing the fixing belt to tighten steadily into place. This enables the loose goods to be bound tightly, greatly improving the strength and stability of the binding. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the base plate, fixing strap, and clamping assembly in an embodiment of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the base plate, upright plate, and clamping assembly in an embodiment of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the upright plate and rotating roller in an embodiment of this utility model;
[0025] Figure 5 This is a schematic diagram of the clamping assembly according to an embodiment of the present invention;
[0026] Figure 6 This is a structural schematic diagram of the vertical plate and the lifting plate in an embodiment of this utility model.
[0027] In the diagram: 10. Base plate; 11. Connecting belt; 12. Fixing belt; 13. Vertical tooth; 20. Vertical plate; 21. Rotating roller; 22. First tooth groove; 23. Rotating handle; 24. Gear; 25. Retaining ring; 30. Clamping assembly; 31. Vertical plate; 32. Support plate; 33. Top plate; 34. Mounting tube; 341. Compression spring; 35. Slide rod; 36. Lifting plate; 361. Second tooth groove; 37. Control plate; 38. Threaded rod; 381. Rotating handle; 382. Contact block; 39. Guide tube; 40. Mounting block; 41. Guide roller; 42. Annular guide groove. Detailed Implementation
[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0029] like Figure 1-6 As shown in the embodiment of this application, an adjustable binding strap is disclosed, including a base plate 10, a connecting strap 11, a fixing strap 12, a rotating roller 21, and a clamping assembly 30. One end of the connecting strap 11 is connected to one side of the base plate 10, and the other end is connected to the fixing strap 12. A plurality of vertical teeth 13 are spaced apart on one side of the fixing strap 12. The tooth surface of the vertical teeth 13 adjacent to the side of the connecting strap 11 is perpendicular to the surface of the fixing strap 12, while the other side of the surface is inclined. Two vertical plates 20 are spaced apart on the base plate 10. There are two rotating rollers 21, which are horizontally rotatable between the two vertical plates 20 and vertically spaced apart. The width of the gap between the two rotating rollers 21 is equal to the width of the fixing strap 12. One of the rotating rollers 21 has a plurality of first tooth grooves 22 spaced apart circumferentially to mate with the vertical teeth 13, and one of the rotating rollers 21 is provided with a rotating handle 23. The clamping assembly 30 is provided on the base plate 10 for clamping the fixing strap 12.
[0030] The fixing strap 12 is inserted between two rotating rollers 21, so that the vertical teeth 13 on the fixing strap 12 engage with the first tooth groove 22, while the side of the fixing strap 12 away from the vertical teeth 13 contacts the roller surface of the other rotating roller 21. Turning the handle 381 causes the rotating roller 21 connected to the handle to rotate accordingly. Through the meshing of the vertical teeth 13 and the first tooth groove 22, the fixing strap 12 is stably pulled. When binding loose goods, pulling the fixing strap 12 via mechanical transmission, compared to simply relying on manual pulling, can more efficiently transmit force to the fixing strap 12, effectively overcoming the resistance caused by the compression deformation of loose goods, allowing the fixing strap 12 to tighten steadily into place. This enables the loose goods to be bound tightly, greatly improving the strength and stability of the binding.
[0031] Specifically, each of the two rotating rollers 21 has concentric trunnions at both ends, which are rotatably connected to the vertical plate 20. One of the trunnions passes through the vertical plate 20, and the rotating handle 23 is connected to the trunnion passing through the vertical plate 20 to ensure the stability of the rotation of the rotating roller 21. Each of the two rotating rollers 21 has a gear 24 on one of its trunnions, which passes through the vertical plate 20. The two gears 24 mesh, and when the rotating handle 381 drives one of the rotating rollers 21 to rotate, the gear 24 connected to it will rotate accordingly. Through the meshing of the gears 24, the other gear 24 and the corresponding rotating roller 21 are driven to rotate synchronously in the opposite direction. The coordinated rotation of the two rotating rollers 21 can transmit traction force more stably, making the pulling process of the fixed belt 12 smoother and more stable. Each of the two rotating rollers 21 has a retaining ring 25 fixedly fitted at both ends. When the fixed belt 12 passes through the gap between the two rotating rollers 21, the retaining rings 25 on both sides constrain it from the width direction of the fixed belt 12. Even if the fixing belt 12 slightly shifts left or right due to force during the rotation of the rotating roller 21 pulling the fixing belt 12, the retaining ring 25 can promptly stop it, ensuring that the fixing belt 12 always moves within the preset track and does not deviate from the effective clamping range between the two rotating rollers 21. This not only avoids wear caused by friction between the fixing belt 12 and the upright plate 20 due to deviation, but also ensures that the upright tooth 13 and the first tooth groove 22 can continuously and accurately mesh, allowing the traction force to be transmitted stably, thus making the binding process of fluffy goods smoother and further improving the reliability of the binding operation.
[0032] During setup, the clamping assembly 30 includes two vertical plates 31 spaced apart on the base plate 10, a support plate 32 between the two vertical plates 31, and a top plate 33 between the tops of the two vertical plates 31. Four mounting tubes 34 arranged in a rectangular array are vertically arranged on the bottom surface of the top plate 33. Sliding rods 35 are slidably mounted inside the mounting tubes 34. A lifting plate 36 is commonly mounted at the lower end of the four sliding rods 35. The bottom surface of the lifting plate 36 has second toothed grooves 361 spaced apart to engage with the vertical teeth 13. When the fixing strap 12 is pulled backward, it passes between the support plate 32 and the lifting plate 36. A compression spring 341 is fitted onto the mounting tube 34. One end of the compression spring 341 is connected to the top plate 33, and the other end is connected to the lifting plate 36. The compression spring 341 always provides a downward thrust to the lifting plate 36. Initially, the distance between the lifting plate 36 and the support plate 32 is the same as the thickness of the fixing strap 12. During the backward movement of the fixing belt 12, the inclined surface of the vertical tooth 13 contacts the second tooth groove 361. As the pulling action continues, the upward component force generated by the inclined surface pushes the lifting plate 36 to rise against the spring force, and the compression spring 341 is compressed accordingly, making room for the smooth movement of the fixing belt 12. When the vertical tooth 13 moves to align with the next second tooth groove 361, the compression spring 341 will push the lifting plate 36 back to its original position under the action of the spring force, allowing the second tooth groove 361 to engage with the vertical tooth 13, forming a firm one-way lock. When the fixing belt 12 tends to retreat due to the rebound force of the goods or external disturbance, the tight engagement between the second tooth groove 361 and the vertical tooth 13 firmly restricts the reverse movement of the fixing belt 12, thereby stably maintaining the tightened state and ensuring that the loose goods are always bundled.
[0033] A funnel-shaped guide tube 39 is provided on the side of the support plate 32 near the rotating roller 21. When the fixing belt 12 is pulled from the rotating roller 21, the large inlet of the guide tube 39 can more easily accept the fixing belt 12, which may be slightly deviated due to the pulling, thus preventing the fixing belt 12 from running off course or tilting before entering the gap between the support plate 32 and the lifting plate 36. As the fixing belt 12 moves inward, the gradually contracting inner wall of the guide tube 39 will exert a gentle corrective force on the fixing belt 12, guiding it smoothly and accurately along the predetermined path between the support plate 32 and the lifting plate 36, ensuring successful clamping.
[0034] In the specific configuration, a control plate 37, shaped like an inverted U, is installed on the lifting plate 36. The control plate 37 has a through hole at its top, and a threaded hole is provided on the top plate 33. A threaded rod 38 is spirally installed inside the threaded hole, parallel to the sliding rod 35. When the threaded rod 38 rotates, it can move vertically relative to the top plate 33. A rotating handle 381 is located at the upper end of the threaded rod 38, and a contact block 382 passes through the through hole at its lower end. After the connecting strap 11 secures the object, rotating the rotating handle 381 causes the threaded rod 38 to rotate, moving it downwards relative to the top plate 33. This causes the contact block 382 to descend synchronously and press against the lifting plate 36. Under the pressure of the contact block 382, the lifting plate 36 forms a stronger clamping force with the support plate 32, firmly clamping the fixing strap 12. Even under long-term bumps or force fluctuations, this prevents the fixing strap 12 from failing due to slight loosening, further enhancing the stability of the binding. When it is necessary to release the binding, rotating the handle 381 in the opposite direction raises the threaded rod 38, causing the contact block 382 to move upwards. Once the contact block 382 contacts the control plate 37, it continues to rise, using the control plate 37 to lift the lifting plate 36 against the force of the compression spring 341, thus completely separating the second tooth groove 361 from the vertical tooth 13. At this point, the fixing strap 12 loses its locking constraint and can be easily pulled to release the goods, resulting in smooth and effortless operation and improved efficiency.
[0035] An installation groove is provided on the side of the base plate 10 near the upright plate 20. Installation blocks 40 are provided on both sides of the installation groove, and a guide roller 41 is rotatably positioned between the two installation blocks 40 to guide the fixing belt 12. An annular guide groove 42 is provided on the guide roller 41, and one side of the fixing belt 12 contacts the bottom of the guide groove. This transforms the sliding friction that might have occurred directly with the base plate 10 into rolling friction between the fixing belt 12 and the guide roller 41. The resistance of rolling friction is much less than that of sliding friction, which not only allows the fixing belt 12 to move more smoothly and reduces resistance during the pulling process, but more importantly, it avoids wear caused by direct friction between the fixing belt 12 and the base plate 10, effectively protecting the surface of the fixing belt 12, extending its service life, and also reducing the risk of binding failure due to wear of the fixing belt 12.
[0036] A protective shell is provided on the base plate 10, and the upright plate 20, rotating roller 21, gear 24, and clamping assembly 30 are all located inside the protective shell. The protective shell has openings on both sides for the fixing strap 12 to pass through, and the protective shell also has round holes for the threaded rod 38 and the trunnion connected to the rotating handle 23 to pass through. The rotating handle 381 and the rotating handle 23 are both located on the outside of the protective shell.
[0037] The principle of using an adjustable binding strap in this embodiment is as follows: After the worker wraps the connecting strap 11 around the goods, one end of the fixing strap 12 is inserted into the gap between the two rotating rollers 21, ensuring that the vertical teeth 13 on the fixing strap 12 precisely engage with the first tooth groove 22 of one of the rotating rollers 21, and the side of the fixing strap 12 away from the vertical teeth 13 contacts the roller surface of the other rotating roller 21. Then, the rotating handle 23 is rotated, and under the meshing action of the gear 24, the two rotating rollers 21 rotate synchronously in opposite directions. Through the meshing of the vertical teeth 13 and the first tooth groove 22, the fixing strap 12 is stably pulled, and the mechanical transmission overcomes the compression resistance of the loose goods, so that the fixing strap 12 is steadily tightened, binding the goods tightly. During the backward pulling process of the fixing strap 12, it passes between the support plate 32 and the lifting plate 36. The inclined surface of the vertical tooth 13 pushes the lifting plate 36 upward against the elastic force of the compression spring 341. When the vertical tooth 13 aligns with the next second tooth groove 361, the lifting plate 36 returns to its original position under the action of the spring force. The second tooth groove 361 and the vertical tooth 13 engage to form a one-way lock, preventing the fixing strap 12 from retracting. After the goods are secured, rotating the handle 381 causes the threaded rod 38 to descend, driving the contact block 382 to press down on the lifting plate 36, increasing the clamping force of the lifting plate 36 and the support plate 32 on the fixing strap 12, and further stabilizing the binding state. When it is necessary to loosen the goods, rotating the handle 381 in the opposite direction causes the threaded rod 38 to rise, driving the contact block 382 to move upward. After the contact block 382 contacts the control plate 37, it drives the lifting plate 36 to rise, causing the second tooth groove 361 to separate from the vertical tooth 13. The fixing strap 12 is unrestrained and can be easily pulled to release the binding.
[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A binding strap with adjustable tightness, characterized in that: The system includes a base plate (10), a connecting belt (11) connected to one side of the base plate (10), a fixing belt (12) connected to one end of the connecting belt (11) away from the base plate (10), a number of vertical teeth (13) spaced apart on one side of the fixing belt (12), the tooth surface of the vertical teeth (13) adjacent to the connecting belt (11) is perpendicular to the belt surface of the fixing belt (12), and the belt surface on the other side is an inclined surface, two vertical plates (20) spaced apart on the base plate (10), two vertically spaced rotating rollers (21) rotatably arranged between the two vertical plates (20), one of the rotating rollers (21) is circumferentially spaced with a number of first tooth grooves (22) that cooperate with the vertical teeth (13), one of the rotating rollers (21) is provided with a rotating handle (23), and a clamping assembly (30) is also provided on the base plate (10).
2. The adjustable tension binding strap according to claim 1, characterized in that: The clamping assembly (30) includes two vertical plates (31) spaced apart on the base plate (10), a support plate (32) between the two vertical plates (31), a top plate (33) between the tops of the two vertical plates (31), four mounting tubes (34) arranged in a rectangular array vertically on the bottom surface of the top plate (33), a sliding rod (35) slidably disposed inside the mounting tube (34), a lifting plate (36) is provided at the lower end of the four sliding rods (35), a compression spring (341) is sleeved on the mounting tube (34), and a second tooth groove (361) that mates with the vertical tooth (13) is spaced apart on the bottom surface of the lifting plate (36).
3. The adjustable tension binding strap according to claim 2, characterized in that: The lifting plate (36) is provided with a control plate (37) that is inverted U-shaped. The top of the control plate (37) is provided with a through hole, and the top plate (33) is provided with a threaded hole. A threaded rod (38) is spirally provided in the threaded hole. The threaded rod (38) is parallel to the slide rod (35). The upper end of the threaded rod (38) is provided with a rotating handle (381), and the lower end is provided with a contact block (382) passing through the through hole.
4. The adjustable tension binding strap according to claim 1, characterized in that: The rotating roller (21) has trunnions concentrically arranged at both ends. The trunnions are rotatably connected to the upright plate (20). One of the trunnions passes through the upright plate (20), and the rotating handle (23) is connected to the trunnion that passes through the upright plate (20).
5. The adjustable tension binding strap according to claim 4, characterized in that: One of the two rotating rollers (21) has a trunnion that passes through the vertical plate (20) and is equipped with a gear (24), and the two gears (24) mesh.
6. The adjustable tension binding strap according to claim 1, characterized in that: Both ends of the rotating roller (21) are fixedly fitted with retaining rings (25).
7. The adjustable tension binding strap according to claim 1, characterized in that: The base plate (10) has an installation groove on the side near the upright plate (20). Installation blocks (40) are provided on both sides of the installation groove. A guide roller (41) is rotatably arranged between the two installation blocks (40). An annular guide groove (42) is provided on the guide roller (41). One side of the fixing belt (12) is in contact with the bottom of the guide groove.
8. The adjustable tension binding strap according to claim 2, characterized in that: The support plate (32) is provided with a funnel-shaped guide tube (39) on the side near the rotating roller (21).