High efficiency strap tensioner

Abstract

The utility model relates to a bandaging tool technical field. A kind of efficient bandaging tensioning device, including shell, inner support is equipped in shell inner side, pivot is equipped on shell, inner support is rotatably installed on pivot, bandaging is wound on pivot, and bandaging end portion is passed out from shell rear side;Fixed band is equipped in shell front side, and fixed band and bandaging end portion are equipped with hook;The inner side of inner support is equipped with the ratchet wheel of fixed connection with pivot, and limit component is equipped on inner support.The utility model provides a kind of efficient bandaging tensioning device, which is convenient, labor-saving, high in tensioning efficiency, reliable in locking, can guarantee the stability of work, compact in structure, strong in applicability, and has automatic winding function, is convenient to store, can satisfy higher use demand;Solve the technical problem that the bandaging device structure and function in prior art are relatively single, a part exists and is labor-consuming, low in tensioning efficiency, unreliable in locking, limited in application range and other problems, cannot satisfy higher use demand.

Description

Technical Field

[0001] This utility model relates to the field of strapping tool technology, and in particular to a high-efficiency strapping tensioning device. Background Technology

[0002] With economic development, logistics, express delivery, and freight transportation have grown rapidly. When securing goods or items, straps are often used to hold them in place, which is where strap tensioners come in. Strap tensioners can store and extend straps. Traditional strap tensioners typically consist of a fixed short strap and a freely retractable long strap. After the strap is fixed at one end, the long strap is pulled out of the tensioner, and the combination of the long and short straps achieves the desired secure hold. However, existing strapping devices generally suffer from problems such as laborious operation, low tightening efficiency, unreliable locking, and limited applicability. For example, some devices cannot achieve step-by-step tightening, making it difficult to precisely control the tightening force; some devices are prone to springing back and loosening after tightening, affecting safety; and some devices have complex structures and high manufacturing costs, failing to meet higher usage requirements, thus necessitating improvement. Utility Model Content

[0003] This utility model provides a high-efficiency strap tensioning device that is easy and labor-saving to operate, has high tensioning efficiency, reliable locking, ensures working stability, has a compact structure, strong applicability, and has an automatic winding function for easy storage, thus meeting higher usage requirements. It solves the technical problems of existing strapping devices, which have relatively simple structures and functions, some of which suffer from laborious operation, low tensioning efficiency, unreliable locking, and limited applicability, while others have complex structures and high manufacturing costs, failing to meet higher usage requirements.

[0004] The above-mentioned technical problem of this utility model is solved by the following technical solution: a high-efficiency strap tightening device, comprising a housing, characterized in that: an inner support is provided on the inner side of the housing, and an automatically retractable rotating shaft is provided on the housing; the inner support is rotatably mounted on the rotating shaft and rotates relative to the housing; the strap is wound around the rotating shaft, and the end of the strap extends out from the rear side of the housing; a fixing strap is provided on the front side of the housing, and hooks are provided at the ends of both the fixing strap and the strap; a ratchet gear is provided on the inner side of the inner support and fixedly connected to the rotating shaft; a limiting component is provided on the inner support to cooperate with the ratchet gear for limiting the rotation of the rotating shaft. The hooks on the fixing strap and the strap can be hung on different items or positions, the strap can be stretched to adapt to different distances, and the strap can be retracted step by step by the cooperation of the inner support and the limiting component, thereby achieving tightening or bringing two objects closer together, and the operation is relatively easy and convenient.

[0005] Preferably, the limiting component includes an inner locking plate that is slidably installed on the inner side of the inner bracket, and corresponding first sliding grooves are provided on both sides of the inner bracket; an inner baffle is also fixedly provided on the inner bracket, and a first storage spring is provided between the inner baffle and the inner locking plate; the inner locking plate abuts against the surface of the ratchet under the action of the first storage spring.

[0006] Preferably, the inner card plate is fixedly provided with an injection-molded button that is easy to toggle. The injection-molded button is fixedly installed on the upper surface of the inner card plate, and the inner card plate can be pressed relatively easily by using the injection-molded button.

[0007] Preferably, the limiting component further includes slots and arc-shaped slides spaced apart on the outer shell. The slides are recessed grooves and are concentrically formed with the rotating shaft. The inner locking plates can be locked in the slots or slide back and forth in the slides. When the injection molding button is manually pressed, the inner locking plates compress the first storage spring, and the inner locking plates disengage from the slots. At this time, the strap can be pulled out or rolled up freely. The inner bracket can be rotated clockwise. After releasing the button, the inner locking plates fall into the slides and can slide back and forth in the slides. The inner bracket can rotate back and forth around the rotating shaft. During the reciprocating rotation of the inner bracket, it will drive the ratchet gear and the rotating shaft to rotate clockwise in one direction, causing the strap to roll inward.

[0008] Preferably, the limiting component further includes an outer clamping plate slidably mounted on the outer shell, the outer shell having a corresponding second sliding groove; an outer baffle is fixedly mounted on the outer shell, and a second storage spring is provided between the outer baffle and the outer clamping plate. The function of the outer clamping plate is to cooperate with the inner clamping plate during the winding process. Under the action of the second storage spring, the outer clamping plate is continuously locked in the tooth groove of the ratchet, preventing the shaft from automatically winding.

[0009] Preferably, guide rods are fixedly provided on the outer card plate and the inner card plate.

[0010] Preferably, the bottom of the inner bracket is integrally formed with an arc-shaped baffle for limiting the outer clamping plate. After rotating a certain angle, the arc-shaped baffle releases the limiting function, and the outer clamping plate can be locked onto the surface of the ratchet. When the tensioning device is in the locked state, the inner clamping plate is locked in the slot and abuts against the surface of the ratchet. At this time, the shaft and the inner bracket cannot rotate, and the outer clamping plate is not locked onto the surface of the ratchet due to the limitation of the arc-shaped baffle of the inner bracket.

[0011] Preferably, one side of the outer casing is provided with a detachable outer cover, and the outer cover contains a spring plate or torsion spring for automatic winding of the shaft. The spring plate or torsion spring inside the outer cover is connected and cooperates with the shaft, allowing for automatic winding without any limiting action.

[0012] Preferably, a handle is fixedly provided at the end of the inner support. During operation, the inner support can be rotated by reciprocating the handle, making operation more effortless and convenient.

[0013] Preferably, the front end of the outer shell is provided with a positioning rod, and the fixing strap is sleeved on the positioning rod.

[0014] Therefore, the high-efficiency strap tensioning device of this utility model has the following advantages: convenient and labor-saving operation, high tensioning efficiency, reliable locking, ensuring working stability, compact structure, strong applicability, and automatic winding function, which makes it easy to store and can meet higher usage requirements. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a high-efficiency strap tightening device according to the present invention.

[0016] Figure 2 yes Figure 1 A schematic diagram of the main structure.

[0017] Figure 3 yes Figure 1 A schematic diagram of the front sectional view of the structure.

[0018] Figure 4 yes Figure 1 A top-view structural diagram.

[0019] Figure 5 yes Figure 1 A three-dimensional structural diagram of the internal support.

[0020] In the diagram, 1 is the outer casing, 2 is the pivot, 3 is the inner bracket, 4 is the handle, 5 is the fixing strap, 6 is the strap, 7 is the hook, 8 is the ratchet, 9 is the inner clamping plate, 10 is the inner baffle, 11 is the first energy storage spring, 12 is the injection-molded button, 13 is the slot, 14 is the slide, 15 is the outer clamping plate, 16 is the outer baffle, 17 is the second energy storage spring, and 18 is the arc-shaped baffle. Detailed Implementation

[0021] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0022] Example: like Figure 1 and 2 As shown in Figures 3, 4, and 5, a high-efficiency strap tightening device includes a housing 1, a rotating shaft 2 installed inside the housing 1, an inner bracket 3 sleeved on the rotating shaft 2, a handle 4 fixedly installed at the end of the inner bracket 3, and the rotating shaft 2 of the inner bracket 3 rotating relative to the housing 1.

[0023] A positioning rod is fixedly installed at the front end of the outer shell 1, and a fixing strap 5 is installed on the outer sleeve of the positioning rod; a strap 6 is wrapped around the rotating shaft 2 inside the inner bracket 3, one end of the strap 6 is fixed on the rotating shaft 2, and the other end of the strap 6 passes through the rear end of the outer shell 1, and hooks 7 are fixedly installed at the ends of both the fixing strap 5 and the strap 6.

[0024] The inner side of the inner bracket 3 is symmetrically equipped with ratchet gears 8 that are fixedly connected to the rotating shaft 2. The inner bracket 3 is equipped with a limiting component that cooperates with the ratchet gears 8 to limit the rotation of the rotating shaft 2.

[0025] The limiting component includes an inner locking plate 9 that is slidably installed inside the inner bracket 3, and corresponding first sliding grooves are provided on both sides of the inner bracket 3; an inner baffle 10 is also fixedly installed on the inner bracket 3, and a first storage spring 11 is installed between the inner baffle 10 and the inner locking plate 9; the inner locking plate 9 abuts against the surface of the ratchet 8 under the action of the first storage spring 11.

[0026] The inner card plate 9 is fixedly installed with injection-molded buttons 12 that are easy to flick with your fingers.

[0027] The limiting component also includes slots 13 and arc-shaped slides 14 spaced apart on the outer shell 1. The slides 14 are recessed groove structures and are concentrically opened with the rotating shaft 2. The inner locking plates 9 can be locked in the slots 13 or slide back and forth in the slides 14.

[0028] The limiting component also includes an outer clamping plate 15 that is slidably mounted on the outer shell 1, and a corresponding second sliding groove is provided on the outer shell 1; an outer baffle 16 is fixedly mounted on the bottom of the outer shell 1, and a second storage spring 17 is provided between the outer baffle 16 and the outer clamping plate 15.

[0029] Guide rods are fixedly installed on both the outer clamping plate 15 and the inner clamping plate 9. Slots through which the guide rods can pass are opened on both the inner baffle 10 and the outer baffle 16. The first storage spring 11 and the second storage spring 17 are both installed on the outside of the guide rods.

[0030] The bottom of the inner bracket 3 is integrally formed with an arc-shaped baffle 18 and a micro groove for limiting the outer clamping plate 15. After rotating a certain angle, the arc-shaped baffle 18 is released from the limiting position, and the outer clamping plate 15 can be clamped on the surface of the ratchet 8.

[0031] When the tensioning device is in the locked state, the inner clamping plate 9 is stuck in the slot 13 and abuts against the surface of the ratchet 8. At this time, the rotating shaft 2 and the inner bracket 3 cannot rotate, and under the restriction of the arc-shaped baffle 18 of the inner bracket 3, the outer clamping plate 15 is not stuck on the surface of the ratchet 8.

[0032] When the injection molding button 12 is pressed manually, the inner clamping plate 9 compresses the first storage spring 11, and the inner clamping plate 9 disengages from the slot 13. At this time, the strap 6 can be pulled out freely and can be automatically wound up under the action of the torsion spring or spring sheet.

[0033] At this time, the inner bracket 3 can be rotated clockwise. During the rotation of the inner bracket 3, the restriction on the outer clamping plate 15 is gradually released. The outer clamping plate 15 abuts against the ratchet 8. After releasing, the inner clamping plate 9 falls into the slide rail 14 and can slide back and forth in the slide rail 14.

[0034] At this time, the inner support 3 can reciprocate around the rotating shaft 2. During the reciprocating rotation of the inner support 3, under the synergistic action of the inner clamping plate 9 and the outer clamping plate 15, the ratchet 8 and the rotating shaft 2 will be driven to rotate clockwise in one direction, causing the strap 6 to be rolled inward.

[0035] If the hooks 7 on the fixing strap 5 and the binding strap 6 are hung on different items or positions, the inner bracket 3 can be reciprocated to tighten or pull the two closer together, and the operation is relatively easy and convenient.

[0036] The specific embodiments described herein are merely illustrative examples of the present invention. Those skilled in the art to which this invention 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 invention or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency strap tensioning device, comprising a housing, characterized in that: The inner side of the outer shell is provided with an inner support, and the outer shell is provided with an automatically retractable rotating shaft. The inner support is rotatably mounted on the rotating shaft and rotates relative to the outer shell. The strap is wrapped around the rotating shaft, and the end of the strap extends out from the rear side of the outer shell. The front side of the outer shell is provided with a fixing strap, and both the fixing strap and the strap are provided with hooks at their ends. The inner side of the inner support is provided with a ratchet gear that is fixedly connected to the rotating shaft, and the inner support is provided with a limiting component that cooperates with the ratchet gear to limit the rotation of the rotating shaft.

2. The high-efficiency strap tensioning device according to claim 1, characterized in that: The limiting component includes an inner locking plate that is slidably installed inside the inner support, and corresponding first sliding grooves are provided on both sides of the inner support; an inner baffle is also fixedly provided on the inner support, and a first storage spring is provided between the inner baffle and the inner locking plate; the inner locking plate abuts against the surface of the ratchet under the action of the first storage spring.

3. The high-efficiency strap tensioning device according to claim 2, characterized in that: The inner card plate is fixed with injection-molded buttons that are easy to toggle.

4. The high-efficiency strap tensioning device according to claim 2, characterized in that: The limiting component also includes slots and arc-shaped slides spaced apart on the outer shell. The slides are recessed groove structures and are concentrically opened with the rotating shaft. The inner locking plates can be locked in the slots or slide back and forth in the slides.

5. A high efficiency strap tensioning device according to claim 1, wherein: The limiting component also includes an outer clamping plate that is slidably mounted on the outer shell, and a corresponding second sliding groove is provided on the outer shell; an outer baffle is fixedly provided on the outer shell, and a second storage spring is provided between the outer baffle and the outer clamping plate.

6. The high-efficiency strap tensioning device according to claim 5, characterized in that: Guide rods are fixedly provided on the outer card plate and the inner card plate.

7. A high efficiency strap tensioning device according to claim 1, wherein: The bottom of the inner bracket is integrally formed with an arc-shaped baffle for limiting the outer clamping plate. After rotating a certain angle, the arc-shaped baffle is released from the limiting position, and the outer clamping plate can be clamped onto the surface of the ratchet gear.

8. A high efficiency strap tensioning device according to claim 1, wherein: The outer casing has a detachable cover on one side, and a spring sheet or torsion spring is provided inside the cover to realize the automatic winding of the shaft.

9. A high efficiency strap tensioning device according to claim 1, wherein: The inner support is fixedly provided with a handle at its end.

10. A high efficiency strap tensioning device according to claim 1, wherein: The front end of the outer shell is provided with a positioning rod, and the fixing strap is sleeved on the positioning rod.

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