Binding belt tensioner

Abstract

The utility model provides a strainer for a binding belt, and belongs to the technical field of binding tools. The strainer solves the technical problem that when an existing strainer is used for straining, an operator needs to apply large acting force. The strainer comprises a base, the base is rotationally connected with a tape winding shaft, the base is further connected with a tape winding shaft and a tape hooking shaft which are arranged on the two sides of the tape winding shaft in parallel, and the plane where the tape hooking shaft and the tape winding shaft are located jointly intersects with the tape winding shaft. According to the utility model, the acting force required to be applied when the binding belt is tensioned can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of binding tools, and relates to a binding strap tensioner. Background Technology

[0002] To prevent goods from shifting or falling during freight transport, they need to be secured. Common methods for securing goods during transport, movement, and loading include: binding with ropes; and using tensioners to secure them with locking webbing. Using ropes is relatively laborious, relying entirely on the user's hand strength to tighten the goods. Furthermore, because the rope is round, the contact area with the goods is small, resulting in high pressure and potentially damaging the packaging. Tensioners, on the other hand, typically involve pulling to secure the goods, which is also quite strenuous for the user.

[0003] Patent application publication number CN102190091A discloses a force-increasing tensioner, including a housing, a side plate, a connecting pin, a semi-circular shaft, a square lock, a handle, and a ratchet. One end of the side plate is equipped with a conventional handle, and the other end of the side plate is movably connected to the housing via the semi-circular shaft. The side plate is composed of a symmetrical left side plate and a right side plate fixedly connected together. The ratchet is installed at both ends of the semi-circular shaft and located between the housing and the side plate. The semi-circular shaft is gap-fitted with the side plate, the ratchet, and the housing.

[0004] The aforementioned tensioner can increase the tension during binding, but it still has shortcomings: during the binding process, the binding strap needs to pass under the connecting pin and then be wound upwards to the outer circumference of the semi-circular shaft controlled by the ratchet. Due to the large drop between the upper side of the semi-circular shaft and the lower side of the connecting pin, the binding strap will bend significantly at the connecting pin when tightening, resulting in a large frictional resistance at that point. This causes the tension force transmitted to the binding strap's effective area to be lost, resulting in a large force that the operator needs to apply when binding. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a strap tensioner. The technical problem this utility model aims to solve is that existing tensioners require a large force to be applied during strapping operations.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A strap tensioner includes a base, on which a tape reel is rotatably connected. The base is also connected to a winding shaft and a hook shaft arranged parallel to both sides of the tape reel. The hook shaft and the winding shaft share a common plane that intersects with the tape reel.

[0008] The winding shaft is connected to one end of the binding strap, and the hook shaft is used to engage with the other end of the binding strap. When the operator controls the rotation of the winding shaft, the binding strap can be tightened to achieve a secure binding. The wrapping shaft allows the binding strap extending from the winding shaft to bend at a certain angle and bypass it for delivery, thereby better limiting the delivery position of the binding strap and making the working state of the binding strap more stable. By setting the relative positions of the wrapping shaft, hook shaft, and winding shaft, the planes where the hook shaft and wrapping shaft are located intersect with the winding shaft. Since the force on the base when the binding strap is tensioned is basically applied along the line connecting the hook shaft and the wrapping shaft, the bending angle generated when the binding strap wound on the winding shaft is delivered to the wrapping shaft when tightening will be smaller, reducing the contact area and force between the binding strap and the wrapping shaft, thereby reducing the frictional resistance at that point and ultimately reducing the force required to tighten the binding strap.

[0009] In the aforementioned binding strap tensioner, the base includes a base plate and two side plates respectively connected to the two sides of the base plate and arranged in parallel. The winding shaft and hook shaft are both connected between the two side plates. Each side plate has a raised portion that curves away from the side of the base plate. The winding shaft is connected between the two raised portions and is parallel to the base plate. This provides a space between the base plate and the two side plates for accommodating the wound binding strap. The raised portions for mounting the winding shaft reduce the height difference between the winding shaft and the winding shaft, thereby reducing the resistance of the winding shaft during the binding process. Furthermore, it reduces the probability of interference between the surrounding components of the winding shaft and the binding strap, ensuring smooth binding.

[0010] In the aforementioned strap tensioner, the wrapping shaft is rotatably connected to the base. This allows the wrapping shaft to rotate adaptively when the strap is tightened, further reducing the resistance exerted by the wrapping shaft on the strap and making the tensioner operation more effortless.

[0011] In the aforementioned strap tensioner, the end of the reel is connected to a ratchet circumferentially positioned on the reel. The tensioner also includes a tensioning arm, which is hinged to the base via the reel. A strip-shaped positioning plate is slidably connected to the tensioning arm, with one end of the positioning plate circumferentially positioned with the ratchet. The radial distance between the wrapping shaft and the reel is greater than the radial distance between the reel and the positioning plate. This relatively larger distance between the wrapping shaft and the reel helps reduce the bending angle of the strap when it reaches the wrapping shaft, thereby reducing the resistance generated by the wrapping shaft on the strap and making operation easier.

[0012] In the aforementioned strap tensioner, a limiting shaft parallel to the tape reel is connected to the tensioning swing arm, and the positioning pull plate is opposite to the limiting shaft along the sliding direction. Thus, during operation, after the positioning pull plate slides and the ratchet unlocks, its sliding stroke is still constrained by the limiting shaft, preventing excessive displacement of the positioning pull plate and thus avoiding deformation, which helps ensure structural stability.

[0013] In the aforementioned strap tensioner, the positioning plate includes a plate body and an L-shaped guide portion connected to the side of the plate body, with the limiting shaft located between the plate body and the guide portion. This limiting shaft also provides guidance and constraint for the sliding of the positioning plate, making the sliding direction and position of the positioning plate more stable relative to the tensioning arm.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] During the tightening process, the bending angle of the strap at the winding shaft is smaller, which reduces the contact area between the strap and the winding shaft, lowers the frictional resistance at that point, and makes it easier for the operator to apply less force when tightening the strap. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0017] Figure 2 This is a top view of the structure of this embodiment.

[0018] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure.

[0019] Figure 4 This is a three-dimensional schematic diagram of a partial structure in this embodiment.

[0020] In the diagram, 1 is the base; 11 is the bottom plate; 12 is the side plate; and 121 is the raised section.

[0021] 2. Belt winding shaft; 3. Belt winding shaft; 4. Belt hook shaft; 5. Ratchet; 6. Tensioning swing arm;

[0022] 7. Positioning plate; 71. Plate body; 72. Guide section;

[0023] 8. Limiting axis. Detailed Implementation

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1-4As shown, this binding strap tensioner includes a base 1, on which an existing winding shaft 2 is rotatably connected. The base 1 also has a winding shaft 3 and a hook shaft 4 arranged parallel to both sides of the winding shaft 2. The hook shaft 4 is a bolted component, and the plane shared by the hook shaft 4 and the winding shaft 3 intersects with the winding shaft 2. The winding shaft 2 is connected to one end of the binding strap, and the hook shaft 4 engages with the hook at the other end of the binding strap. When the operator controls the rotation of the winding shaft 2, the binding strap can be tightened. The winding shaft 3 allows the binding strap extending from the winding shaft 2 to bend at a certain angle and bypass it during delivery, thus better limiting the delivery position of the binding strap and making its working state more stable. Specifically, the base 1 includes a base plate 11 and two side plates 12 connected to the two sides of the base plate 11 and arranged in parallel. The winding shaft 2 and the hook shaft 4 are both vertically connected between the two side plates 12. Each side of the two side plates 12 has a raised portion 121 that curves away from the side where the base plate 11 is located. The winding shaft 3 is connected between the two raised portions 121 and is parallel to the base plate 11. Both ends of the winding shaft 2 are connected to ratchet 5 that are circumferentially positioned with the winding shaft 2. The tensioner also includes a tensioning swing arm 6, which is hinged to the base 1 via the winding shaft 2. A strip-shaped positioning pull plate 7 is slidably connected to the tensioning swing arm 6. One end of the positioning pull plate 7 is circumferentially positioned with the ratchet 5. The radial distance between the winding shaft 3 and the winding shaft 2 is greater than the radial distance between the winding shaft 2 and the positioning pull plate 7.

[0026] like Figure 1-3 As shown, a limiting shaft 8 parallel to the tape winding shaft 2 is connected to the tensioning swing arm 6, and the positioning pull plate 7 is opposite to the limiting shaft 8 along the sliding direction. Specifically, the positioning pull plate 7 includes a plate body 71 and an L-shaped guide portion 72 connected to the side of the plate body 71, and the limiting shaft 8 is located between the plate body 71 and the guide portion 72.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A strap tensioner, comprising a base (1), wherein a winding shaft (2) is rotatably connected to the base (1), and a winding shaft (3) and a hook shaft (4) arranged parallel to both sides of the winding shaft (2) are also connected to the base (1), characterized in that, The plane where the hook shaft (4) and the winding shaft (3) are located intersects with the winding shaft (2).

2. The strap tensioner according to claim 1, characterized in that, The base (1) includes a base plate (11) and two side plates (12) that are connected to the two sides of the base plate (11) and arranged in parallel. The winding shaft (2) and the hook shaft (4) are both connected between the two side plates (12). The sides of the two side plates (12) each have a raised part (121) that bends away from the side where the base plate (11) is located. The winding shaft (3) is connected between the two raised parts (121) and is parallel to the base plate (11).

3. The binding strap tensioner according to claim 1 or 2, characterized in that, The winding shaft (3) is rotatably connected to the base (1).

4. The binding strap tensioner according to claim 1 or 2, characterized in that, The end of the tape reel (2) is connected to a ratchet (5) that is circumferentially positioned with the tape reel (2). The tensioner also includes a tensioning swing arm (6). The tensioning swing arm (6) is hinged to the base (1) through the tape reel (2). A strip-shaped positioning pull plate (7) is slidably connected to the tensioning swing arm (6). One end of the positioning pull plate (7) is circumferentially positioned with the ratchet (5). The radial distance between the winding shaft (3) and the tape reel (2) is greater than the radial distance between the tape reel (2) and the positioning pull plate (7).

5. The strap tensioner according to claim 4, characterized in that, The tensioning swing arm (6) is connected to a limiting shaft (8) that is parallel to the winding shaft (2), and the positioning pull plate (7) is opposite to the limiting shaft (8) along the sliding direction.

6. The binding strap tensioner according to claim 5, characterized in that, The positioning pull plate (7) includes a plate body (71) and an L-shaped guide part (72) connected to the side of the plate body (71). The limiting shaft (8) is located between the plate body (71) and the guide part (72).

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