A tensioner
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 石宏彪
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-30
Smart Images
Figure CN224429869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a binding device, specifically a tensioner. Background Technology
[0002] As a commonly used tool for securing goods, tensioners offer significant advantages in logistics and transportation, specifically as follows:
[0003] 1. Prevents cargo shifting. By applying continuous tension, it effectively secures the cargo, reducing the risk of shaking, slipping, or falling during transportation. It performs particularly well on bumpy roads or during sudden braking. For example, the double ratchet design (common in high-end models) can create reverse braking to prevent loosening and ensure the stability of the binding.
[0004] 2. Protect goods and transport vehicles, reduce collisions and friction between goods or with the vehicle compartment, reduce the probability of cargo damage, and avoid vehicle damage caused by loose goods. The use of tensioners in accordance with safety regulations can meet road transport safety requirements and reduce the risk of traffic accidents or fines caused by improper binding.
[0005] 3. The labor-saving design adopts a three-stage lever system or double ratchet structure. The operator only needs to pull the handle to achieve high tension tightening, which significantly saves physical strength. Compared with traditional hemp rope or steel wire rope, the design of synthetic fiber webbing with metal hooks simplifies the fixing process, makes disassembly convenient, and improves efficiency.
[0006] 4. High portability and adaptability: tensioners are usually small in size and light in weight, making them easy to carry. They can also be flexibly selected with different lengths of webbing and tightening straps (such as 1 meter to several meters) and tensile strength specifications (1.5 tons to 10 tons) according to the size of the goods.
[0007] The current tensioner combines a metal head, a reinforced handle, and wear-resistant webbing, enhancing durability. The grooved design reduces friction, improves head operation smoothness, and extends service life. The tensioner is versatile, suitable for various transportation modes including sea, land, and air transport. It can secure a wide range of goods, such as home appliances, building materials, equipment, and furniture, meeting diverse industry needs. Its wide tensile strength range, from 1.5 tons to 10 tons breaking strength, covers most transportation scenarios. Furthermore, the hook configuration (single or double hooks) allows for flexible adjustment of the actual tensile strength to suit both light and heavy cargo. However, current tensioners also have drawbacks. After the tension band or webbing is pulled out, the handle needs to be repeatedly swung to activate the ratchet mechanism to tighten the band. Because a significant amount of band is often pulled out to meet binding requirements, there is considerable redundancy. Therefore, re-tightening takes a considerable amount of time, which is detrimental to improving the efficiency of cargo binding. Utility Model Content
[0008] To address the aforementioned problems, the purpose of this utility model is to provide a tensioner.
[0009] To achieve the above objectives, the technical solution of this utility model is as follows: a tensioner, comprising a base and a handle, one end of the handle being rotatably disposed within the base, one end of the tensioning strap being fixed to the periphery of a take-up drum and wound around the take-up drum, both ends of the take-up drum being respectively fixed with ratchet wheels that rotate synchronously with the take-up drum, the check surface of the ratchet teeth being in close contact with the locking end of an elastic check baffle disposed within the base, used to prevent the tensioning strap from being pulled out of the take-up drum, and the rotating part of the handle being provided with a freely rotatable take-up drum. The handle is equipped with an elastic locking device for the handle to push the ratchet to rotate in one direction. The take-up drum is also equipped with a coil spring structure. The coil spring structure is sleeved on the outer periphery of the take-up drum, and the inner end of the coil spring structure is fixedly connected to the take-up drum. The outer end of the coil spring structure is fixedly connected to the outer wall of the base. In the normal or tightened state, the tensioning tape is wound around the take-up drum. When the tensioning tape is pulled out, the coil spring structure is tightened. When the elastic locking device and the elastic check baffle retract against the elastic force, the coil spring structure drives the take-up drum to wind up the tensioning tape.
[0010] Furthermore, the elastic locking device includes a ratchet push plate rotatably disposed within the handle. The ratchet push plate is bent, and hinge plates penetrating the pivot are respectively disposed on both sides of the outer periphery of the bent portion. A stop plate is disposed at the inner end of the ratchet push plate, which contacts the ratchet tooth check surface. A torsion spring is sleeved on the rotating part of the ratchet push plate, and one end of the torsion spring is fixedly connected to the inner side wall of the handle, while the other end of the torsion spring is fixedly connected to the ratchet push plate, so that the ratchet push plate tightly contacts the stop plate with the ratchet tooth check surface under the torsion force of the torsion spring.
[0011] Furthermore, the elastic locking device also includes a C-shaped wrench rotatably disposed inside the handle. The outer end of the C-shaped wrench is located outside the handle, and the inner end and inner side of the C-shaped wrench are in close contact with the outer end of the ratchet push plate and the side near the stop plate. The curved part of the C-shaped wrench is provided with a limit protrusion, which, under the action of the torsion spring, makes the outer side of the limit protrusion in close contact with the inner side of the connecting plate of the handle.
[0012] Furthermore, a spring protective cover is fixed to the outer side of the base to cover the spring structure.
[0013] Furthermore, the base is a U-shaped plate structure, and the end away from the handle is covered and fixed with a tightening strap protrusion cover, through which the tightening strap passes.
[0014] Furthermore, the elastic check baffle is slidably disposed in the sliding grooves on both sides of the base, and a tightening spring is fixed to the outer end of the elastic check baffle. The tightening spring makes the inner locking end of the elastic check baffle in close contact with the check surface of the ratchet teeth.
[0015] Furthermore, a ratchet is fixed at each end of the winding drum, the ratchets are symmetrically arranged on the left and right, and the elastic check baffle and stop plate are each provided with two locking ends that contact the check surface of the ratchet teeth at each end.
[0016] Furthermore, the handle body consists of two parallel plate-like structures, with the outer edges of the two plate-like structures fixedly connected by an integrated connecting plate.
[0017] Furthermore, a tensioning strap is fixed to the base on one side of the handle via a fixed shaft, and hook structures are fixed to the outer ends of both the tensioning strap and the tightening strap.
[0018] Furthermore, the outer end of the handle is fitted with a non-slip grip.
[0019] When the tightening strap of this utility model is pulled out and needs to be tightened, the coil spring structure is tightened after the tightening strap is pulled out. At this time, the elastic check plate is pushed away from the ratchet, and the C-shaped wrench is pulled outward. The inner end of the C-shaped wrench pulls the outer end of the ratchet push plate outward, thereby causing the inner end stop plate of the ratchet push plate to disengage from the check surface of the ratchet teeth, so that the ratchet is completely unobstructed. Under the action of the coil spring structure, the pulled-out tightening strap is quickly rewound and returned to the drum, which facilitates the rapid tightening of goods. Then, the tightening strap can be further tightened by swinging the handle back and forth. In this way, the coil spring structure can be used to pre-wrap the tightening strap during the winding process, and then the ratchet can be driven by the subsequent handle to further wind and tighten it, thereby greatly shortening the winding time of the tightening strap and improving the efficiency of binding goods. Attached Figure Description
[0020] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;
[0022] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention;
[0023] Figure 4 This is a three-dimensional structural diagram of the internal ratchet of this utility model. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] The following is a detailed description of this embodiment with reference to the accompanying drawings:
[0027] This embodiment provides a tensioner; please refer to the accompanying drawings in the instruction manual. Figure 1-4 .
[0028] like Figure 1-4 As shown, a tensioner includes a base 1 and a handle 2. One end of the handle 2 is rotatably mounted inside the base 1. One end of the tensioning strap 4 is fixed to the periphery of a take-up drum 3 and wound around the take-up drum 3. Both ends of the take-up drum 3 are respectively fixed with ratchet 5s that rotate synchronously with the take-up drum 3. The check surface of the ratchet teeth of the ratchet 5 is in close contact with the locking end of an elastic check baffle 6 provided inside the base 1, preventing the tensioning strap 4 from being pulled off the take-up drum 3. The rotating part of the handle 2 is provided with a freely rotatable take-up drum 3. The handle 2 is provided with a handle... 2. An elastic locking device that drives the ratchet 5 to rotate in one direction. The take-up drum 3 is also equipped with a coil spring structure 8. The coil spring structure 8 is sleeved on the outer periphery of the outer end of the take-up drum 3, and the inner end of the coil spring structure 8 is fixedly connected to the take-up drum 3. The outer end of the coil spring structure 8 is fixedly connected to the outer wall of the base 1. In the normal or tightened state, the tensioning band 4 is wound around the take-up drum 3. When the tensioning band 4 is pulled out, the coil spring structure 8 is tightened. When the elastic locking device and the elastic check baffle 6 retract against the elastic force, the coil spring structure 8 drives the take-up drum 3 to wind up the tensioning band 4.
[0029] The elastic locking device includes a ratchet push plate 9 rotatably disposed inside the handle 2. The ratchet push plate 9 is bent, and hinge plates 15 passing through the pivot are respectively provided on both sides of the bent part. The inner end of the ratchet push plate 9 is provided with a stop plate 10 that contacts the ratchet tooth check surface of the ratchet 5. The rotating part of the ratchet push plate 9 is fitted with a torsion spring 11, and one end of the torsion spring 11 is fixedly connected to the inner side wall of the handle 2, while the other end of the torsion spring 11 is fixedly connected to the ratchet push plate 9, so that the ratchet push plate 9 tightly contacts the stop plate 10 with the ratchet tooth check surface of the ratchet 5 under the torsion of the torsion spring 11. A coil spring protective cover 16 covering the coil spring structure 8 is fixed on the outer side of the base 1.
[0030] To facilitate pulling the outer end of the ratchet push plate 9, the elastic locking device also includes a C-shaped wrench 12 rotatably disposed inside the handle 2. The outer end of the C-shaped wrench 12 is located outside the handle 2, and the inner end and inner side of the C-shaped wrench 12 are in close contact with the outer end of the ratchet push plate 9 and the side near the stop plate 10. The curved part of the C-shaped wrench 12 is provided with a limiting protrusion 13, which, under the torque of the torsion spring 11, makes the outer side of the limiting protrusion 13 in close contact with the inner side of the connecting plate 14 of the handle 2.
[0031] Specifically: The base 1 is a U-shaped plate structure, and the end away from the handle 2 is covered and fixed with a tensioning strap protrusion cover 17. The tensioning strap 4 passes through the elongated opening of the tensioning strap protrusion cover 17. The elastic check baffle 6 is slidably set in the side wall grooves 18 on both sides of the base 1, and the outer end of the elastic check baffle 6 is fixed with a top spring. The top spring makes the inner locking end of the elastic check baffle 6 in close contact with the check surface of the ratchet 5. The handle 2 is mainly composed of two parallel plate structures. The outer edges of the two plate structures are fixedly connected by an integrated connecting plate 14. The base 1 on one side of the handle 2 is also fixed with a tensioning strap 19 by a fixed shaft. The outer ends of the tensioning strap 4 and the tensioning strap 19 are both fixed with hook structures 20. The outer end of the handle 2 is fitted with an anti-slip handle 7.
[0032] To further improve overall stability, a ratchet 5 is fixed at each end of the winding drum 3. The ratchet 5 are symmetrically arranged on the left and right sides, and the elastic check baffle 6 and the stop plate 10 are both provided with two locking ends that contact the check surface of the ratchet teeth of the ratchet 5 at each end.
[0033] The working principle of this utility model is as follows: When the tightening band 4 is pulled out and needs to be tightened, the handle 2 is swung, which drives the ratchet push plate 9 to move together. The stop plate 10 of the ratchet push plate 9 pushes the anti-return surface of the ratchet 5, so that the ratchet 5 moves together with the handle 2 in the direction of ratchet 5 rotation. When the handle 2 rotates back, the stop plate 10 will rotate along the sliding surface of the ratchet 5. With the cooperation of the elastic anti-return baffle 6, the unidirectional rotation of the ratchet 5 can be achieved, which makes it easy to tighten the band 4. That is, the process is similar to the prior art. The difference is that when rapid tightening is required, since the coil spring structure 8 is tightened after the tightening band 4 is pulled out, the elastic anti-return baffle 6 is pushed away from the ratchet 5, and the C-shaped wrench 12 is pulled outward at the same time. The inner end of 2 pulls the outer end of the ratchet push plate 9 outward, thereby causing the inner end stop plate 10 of the ratchet push plate 9 to disengage from the anti-return surface of the ratchet 5, so that the ratchet 5 completely loses its obstruction (the same applies when pulling out the tightening band 4, except that the torque of the coil spring structure 8 needs to be overcome). Under the action of the coil spring structure 8, the pulled-out tightening band 4 is quickly rewound and returned to the drum 3, which facilitates the rapid tightening of goods. Then, the tightening band 4 can be further tightened by swinging the handle 2 back and forth. In this way, the tightening band 4 can be pre-wound using the coil spring structure 8 during the winding process, and then the ratchet 5 can be further wound and tightened by the subsequent handle, thereby greatly shortening the winding time of the tightening band 4 and improving the efficiency of binding goods.
[0034] Of course, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A tensioner, comprising a base (1) and a handle (2), one end of the handle (2) being rotatably disposed within the base (1), one end of a tensioning belt (4) being fixed to the periphery of a take-up drum (3) and wound around the take-up drum (3), both ends of the take-up drum (3) being respectively fixed with ratchet wheels (5) that rotate synchronously with the take-up drum (3), the check surface of the ratchet teeth of the ratchet wheels (5) being in close contact with the locking end of an elastic check baffle (6) disposed within the base (1), for preventing the tensioning belt (4) from being pulled out of the take-up drum (3), characterized in that: The rotating part of the handle (2) is provided with a freely rotatable take-up drum (3). The handle (2) is provided with an elastic locking device for the handle (2) to push the ratchet (5) to rotate in one direction. The take-up drum (3) is also provided with a coil spring structure (8). The coil spring structure (8) is sleeved on the outer periphery of the take-up drum (3), and the inner end of the coil spring structure (8) is fixedly connected to the take-up drum (3). The outer end of the coil spring structure (8) is fixedly connected to the outer wall of the base (1). In the normal or tightened state, the coil spring structure (8) is wound around the take-up drum (3). When the coil spring structure (8) is pulled out, the coil spring structure (8) is tightened. When the elastic locking device and the elastic check plate (6) retract against the elastic force, the coil spring structure (8) drives the take-up drum (3) to wind up the coil spring structure (4).
2. A tensioner as in claim 1, wherein: The elastic locking device includes a ratchet push plate (9) rotatably disposed inside the handle (2). The ratchet push plate (9) is bent, and hinge plates (15) that pass through the rotating shaft are respectively provided on both sides of the bent part. The inner end of the ratchet push plate (9) is provided with a stop plate (10) that contacts the ratchet tooth check surface of the ratchet (5). The rotating part of the ratchet push plate (9) is fitted with a torsion spring (11), and one end of the torsion spring (11) is fixedly connected to the inner side wall of the handle (2), while the other end of the torsion spring (11) is fixedly connected to the ratchet push plate (9), so that the ratchet push plate (9) will make the stop plate (10) and the ratchet tooth check surface of the ratchet (5) in close contact under the torsion of the torsion spring (11).
3. A tensioner as in claim 2, wherein: The elastic locking device also includes a C-shaped wrench (12) that is rotatably disposed in the handle (2). The outer end of the C-shaped wrench (12) is located outside the handle (2). The inner end and inner side of the C-shaped wrench (12) are in close contact with the outer end of the ratchet push plate (9) and the side near the stop plate (10). The curved part of the C-shaped wrench (12) is provided with a limiting protrusion (13). Under the torque of the torsion spring (11), the outer side of the limiting protrusion (13) is in close contact with the inner side of the connecting plate (14) of the handle (2).
4. A tensioner as in claim 1, wherein: The outer side of the base (1) is fixed with a spring guard (16) that covers the spring structure (8).
5. A tensioner as in claim 1, wherein: The base (1) is a plate structure with a U-shaped cross section, and the end away from the handle (2) is covered and fixed with a tightening strap protrusion cover (17). The tightening strap (4) passes through the long strip opening of the tightening strap protrusion cover (17).
6. A tensioner as in claim 1, wherein: The elastic check baffle (6) is slidably disposed in the side wall grooves (18) of the base (1) on both sides, and a tightening spring is fixed at the outer end of the elastic check baffle (6). The tightening spring makes the inner locking end of the elastic check baffle (6) in close contact with the check surface of the ratchet (5).
7. A tensioner as in claim 2, wherein: A ratchet (5) is fixed at each end of the winding drum (3). The ratchet (5) is symmetrically arranged on the left and right. The elastic check baffle (6) and the stop plate (10) are both provided with two locking ends that contact the check surface of the ratchet teeth of the ratchet (5) at each end.
8. A tensioner as in claim 3, wherein: The handle (2) is mainly composed of two parallel plate-like structures, with the outer edges of the two plate-like structures fixedly connected by an integral connecting plate (14).
9. A tensioner as in claim 1, wherein: The base (1) on one side of the handle (2) is also fixed with a tensioning strap (19) by a fixed shaft. The outer ends of the tensioning strap (4) and the tensioning strap (19) are both fixed with hook structures (20).
10. A tensioner as in claim 1, wherein: The outer end of the handle (2) is fitted with a non-slip handle (7).