Anti-theft ratchet binder

Abstract

The application discloses a theftproof ratchet binding device and belongs to the technical field of goods transportation fixing devices. The binding device comprises a handle part, a fixing part, a rotating shaft and a ratchet. A lock part is arranged on one side of the handle close to a driving part, and a guide strip extends from the driving part towards the lock part. The lock part comprises a lock core and a blocking part which is linearly movable and controlled by the lock core. The blocking part can be switched between a locking position and an unlocking position by operating the lock core with a key. When in the locking position, the front end of the blocking part abuts against the end of the guide strip, physically limiting the movement of the driving part in the direction of separating from the ratchet teeth, thereby effectively preventing the instantaneous release of the binding belt caused by accidental touch or accidental collision, improving the operation safety, and playing a theftproof role. When in the unlocking position, the blocking part is retracted, without affecting the normal operation of the driving part. The application has a reasonable structure, guarantees the original function, greatly improves the safety and reliability of the device.

Description

Technical Field

[0001] This invention relates to the field of cargo transport securing equipment, specifically to a ratchet-type binding device with anti-theft and anti-misoperation functions. Background Technology

[0002] A ratchet strap is a manual fastening tool widely used in logistics transportation and cargo securing. It typically includes a fixed part, a rotating shaft, a ratchet, and an operating handle. By reciprocating the handle, the ratchet mechanism rotates in one direction, tightening the strap wrapped around the rotating shaft to secure the cargo. After operation, triggering a release mechanism (such as a drive mechanism or release wrench) disengages the ratchet from the pawl, allowing the strap to be released in the opposite direction.

[0003] Currently available ratchet straps typically have their release mechanisms directly exposed or only have a simple unlock button. In actual use, especially during transportation or when goods are stacked, this release mechanism is highly susceptible to activation due to accidental collisions, vibrations, or accidental human contact, causing the ratchet mechanism to release instantly. This results in the straps suddenly loosening, the goods becoming unsecured, and potentially leading to serious safety accidents such as goods falling, vehicle damage, or even personal injury. Utility Model Content

[0004] The purpose of this application is to provide a ratchet tie that can effectively prevent misoperation and improve safety.

[0005] An anti-theft ratchet strap includes a handle, a fixing part, a rotating shaft, and a ratchet. One end of the fixing part is sleeved on the rotating shaft, and one end of the handle is disposed at both ends of the rotating shaft. The ratchet is disposed on the rotating shaft and located between the handle and the fixing part. The handle can drive the ratchet to rotate the rotating shaft. The handle includes a handle, connecting frames, and a driving component. The two ends of the handle are respectively mounted on one end of two connecting frames, and the other ends of the two connecting frames are mounted on the rotating shaft. The driving component is disposed between the two connecting frames and engages with the ratchet teeth of the ratchet. The handle can drive the connecting frames to rotate around the rotating shaft. The connecting frame rotates by driving a ratchet via a drive component, which in turn drives the rotating shaft to rotate. A locking part is located on the side of the handle near the drive component. A guide bar extends from the drive component toward the locking part. The locking part includes a lock cylinder and a blocking member that is linearly movable and controlled by the lock cylinder. The blocking member has a locked position and an unlocked position. When the blocking member is in the locked position, its front end abuts against the end of the guide bar to restrict the drive component from moving away from the ratchet. When the blocking member is in the unlocked position, its front end moves away from the end of the guide bar, allowing the drive component to move freely away from the ratchet.

[0006] Furthermore, the lock also includes a lock housing fixedly mounted on the handle, and the lock cylinder is rotatably disposed within the lock housing.

[0007] Furthermore, the end of the lock cylinder is provided with a non-circular driving part, and the blocking member is provided with a non-circular driving groove that matches the driving part. The lock cylinder drives the blocking member to move through the cooperation of the driving part and the driving groove.

[0008] Furthermore, the blocking member is fixedly mounted on the drive part of the lock cylinder by a fastener.

[0009] Furthermore, a limiting sleeve is fitted onto the driving part of the lock cylinder, and a limiting block is provided on the upper end face of the lock shell. The limiting sleeve is provided with a limiting groove that cooperates with the limiting block. When the key is turned, the lock cylinder drives the limiting sleeve to rotate, and the limiting block abuts against the end wall of the limiting groove to limit the rotation angle of the lock cylinder.

[0010] Furthermore, a guide plate is fixedly provided on the handle, and a guide hole is provided on the guide plate, through which the guide strip of the driving component slides.

[0011] The beneficial effects of this application are as follows:

[0012] (1) This application, by setting a locking part and its blocking part, when the blocking part is in the locked position, its front end directly abuts against the end of the guide bar of the drive part, physically restricting the movement path of the drive part in the direction of disengaging from the ratchet. This makes it impossible to complete the traditional operation of directly pressing the drive part to release the ratchet, fundamentally avoiding the sudden loosening of the strap due to accidental collision, vibration or accidental contact by personnel, greatly improving the safety of equipment operation and cargo transportation, and effectively preventing the occurrence of safety accidents.

[0013] (2) The lock can only be switched between the locked and unlocked positions by using a special key. When not in use or during transportation, the lock can be placed in the locked position, so that unauthorized personnel cannot operate the release mechanism and thus cannot unlock the binding, which plays a good role in preventing theft and ensuring the safety of goods and equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an anti-theft ratchet binder provided in one embodiment of this application;

[0015] Figure 2 This is a top view of an anti-theft ratchet binder provided in an embodiment of this application;

[0016] Figure 3 In order to be in Figure 2 A sectional view at point AA;

[0017] Figure 4 for Figure 3 A magnified view of the area at point B;

[0018] Figure 5 This is an exploded view of the lock portion provided in an embodiment of this application;

[0019] Figure 6 A schematic diagram of the structure of an anti-theft ratchet binder provided in an embodiment of this application when the blocking member is in the unlocked position;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Handle; 2. Fixing part; 3. Rotating shaft; 4. Ratchet; 5. Locking part;

[0022] 11. Handle; 12. Connecting bracket; 13. Driving component; 131. Guide bar; 14. Guide plate; 141. Guide hole; 15. Return spring;

[0023] 51. Lock cylinder; 52. Blocking component; 53. Lock housing; 54. Fastener; 55. Limiting sleeve;

[0024] 511. Drive unit;

[0025] 521. Main body; 522. Blocking part; 523. Drive slot;

[0026] 531, Limiting block; 551, Limiting groove; Detailed Implementation

[0027] The technical solutions of 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. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., are used only for the convenience of describing this application and for 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, and therefore should not be construed as a limitation on this application. In particular, the understanding of the term "upper" following a noun in the claims should be understood as meaning that the entire inner and outer surfaces of the structure referred to by the noun conform to the definition of "upper."

[0029] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided in this application.

[0030] like Figures 1 to 3 As shown, an anti-theft ratchet strap includes a handle part 1, a fixing part 2, a rotating shaft 3, and a ratchet 4. One end of the fixing part 2 is sleeved on the rotating shaft 3, and one end of the handle part 1 is disposed at both ends of the rotating shaft 3. The ratchet 4 is disposed on the rotating shaft 3 and located between the handle part 1 and the fixing part 2. The handle part 1 can drive the ratchet 4 to drive the rotating shaft 3 to rotate. The handle part 1 includes a handle 11, a connecting frame 12, and a driving member 13. The two ends of the handle 11 are respectively installed at one end of the two connecting frames 12, and the other ends of the two connecting frames 12 are installed on the rotating shaft 3. The driving member 13 is disposed between the two connecting frames 12 and engages with the ratchet teeth of the ratchet 4. The handle 11 can drive the connecting frame 12 to rotate around the rotating shaft 3. The connecting frame 12 drives the ratchet 4 through the driving member 13, thereby driving the rotating shaft 3 to rotate.

[0031] A locking part 5 is provided on the side of the handle 11 near the drive member 13. A guide bar 131 extends from the drive member 13 toward the locking part 5. The locking part 5 includes a lock cylinder 51 and a blocking member 52 that can move linearly controlled by the lock cylinder 51. The blocking member 52 has a locked position S1 and an unlocked position S. When the blocking member 52 is in the locked position, its front end abuts against the end of the guide bar 131 to restrict the drive member 13 from moving in the direction of disengaging from the ratchet. When the blocking member 52 is in the unlocked position, its front end moves away from the end of the guide bar 131, and the drive member 13 can move freely in the direction of disengaging from the ratchet.

[0032] like Figure 4 As shown, the blocking member 52 includes a body portion 521 and a blocking portion 522 extending downward from the side of the body portion 521.

[0033] like Figure 5 As shown, the lock part 5 also includes a lock housing 53 fixedly mounted on the handle 11, and the lock cylinder 51 is rotatably disposed inside the lock housing 53.

[0034] like Figure 5 As shown, the end of the lock cylinder 51 is provided with a non-circular drive part 511, and the blocking member 52 is provided with a non-circular drive groove 523 that is adapted to the drive part 511. The lock cylinder 51 drives the blocking member 52 to move through the cooperation of the drive part 511 and the drive groove 523.

[0035] like Figure 5 As shown, the blocking member 52 is fixedly mounted on the drive part 511 of the lock cylinder 51 by a fastener 54.

[0036] like Figure 5As shown, a limiting sleeve 55 is also fitted onto the drive part 511 of the lock cylinder 51, and a limiting block 531 is provided on the upper end face of the lock shell 53. The limiting sleeve 55 is provided with a limiting groove 551 that cooperates with the limiting block 531. When the key is turned, the lock cylinder 51 drives the limiting sleeve 55 to rotate, and the limiting block 531 abuts against the end wall of the limiting groove 551 to limit the rotation angle of the lock cylinder 51. This combined structure is used to precisely control the rotation angle of the lock cylinder 51 (usually 90° or 180°), thereby clearly defining the two positions of "locked" and "unlocked" and preventing damage to the internal lock structure due to excessive rotation.

[0037] like Figure 3 As shown, a guide plate 14 is fixedly mounted on the handle 11. The guide plate 14 has a guide hole 141, and the guide strip 131 of the drive member 13 slides through the guide hole 141. The guide hole 141 on the guide plate 14 provides a precise sliding track for the guide strip 131 of the drive member 13, ensuring that the drive member 13 can only move back and forth along a preset straight path, avoiding skewness or jamming, making the operation smoother and the locking more reliable.

[0038] like Figure 3 As shown, a return spring 15 is also provided on the guide bar 131. One end of the return spring 15 abuts against the side of the guide plate 14, and the other end abuts against the drive member 13. During the release operation, when the operator releases the drive member 13, the elastic force of the return spring 15 will push the drive member 13 and its guide bar 131 to automatically return forward and re-engage with the ratchet, preparing for the next binding operation.

[0039] The working principle of this application is as follows:

[0040] The anti-theft ratchet 4 binding device of this invention works by physically restricting the movement of the release mechanism (drive member 13) through an integrated locking part 5, thereby achieving the functions of anti-theft and preventing misoperation. Its specific working process is as follows:

[0041] During normal binding (tightening) operations, the process is the same as with a traditional ratchet 4 binding device. The operator repeatedly pulls the handle 11, causing the connecting frame 12 to swing around the shaft 3. The connecting frame 12 then drives the internal drive component 13 to move accordingly. When the handle 11 swings in the tightening direction, the drive component 13 engages in the tooth groove of the ratchet 4, pushing the ratchet 4 and the shaft 3 to rotate at a certain angle, thereby tightening the binding strap. When the handle 11 swings in the reverse direction, the drive component 13 slides back along the inclined surface of the ratchet teeth and falls into the next tooth groove, preparing for the next push of the ratchet 4. By repeating this process, the continuous tightening and binding of the goods is achieved.

[0042] When binding is complete or locking is required midway, the lock cylinder 51 is rotated to the locked position using the key. The rotational movement of the lock cylinder 51 is converted into the linear movement of the blocking member 52 through the cooperation of its non-circular drive part 511 with the drive groove 523 on the blocking member 52, causing it to extend forward to the locked position.

[0043] At this point, the front end of the blocking member 52 abuts against the end of the guide strip 131 of the driving member 13, forming a mechanical barrier. If any unexpected force (such as a collision, vibration, or accidental contact) attempts to press the driving member 13 backward to trigger release, the guide strip 131 of the driving member 13 will be firmly held in place by the blocking member 52, preventing it from moving backward. Because the driving member 13 cannot disengage from the ratchet, the ratchet 4 mechanism remains locked, preventing the strap from loosening, thus effectively preventing accidental loosening of goods and also serving as an anti-theft measure.

[0044] When an authorized operator needs to release the straps, a special key must be inserted into the lock cylinder 51 and rotated to the unlocked position.

[0045] This operation causes the blocking member 52 to move linearly in the opposite direction, retracting from its locked position to the unlocked position. At this point, the front end of the blocking member 52 is completely disengaged from the movement path of the guide bar 131 and no longer forms an obstruction.

[0046] The operator can then press the drive component 13 (or the release wrench connected to the drive component 13) backward by hand to make it move backward against the elastic force of the return spring 15, ultimately causing the drive component 13 to completely disengage from the ratchet. Once disengaged, the rotating shaft 3 and the ratchet 4 will rotate freely in opposite directions under the tension of the strap, thereby achieving the loosening and release of the strap.

[0047] The embodiments described above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. An anti-theft ratchet binding device, comprising a handle, a fixing part, a rotating shaft, and a ratchet, wherein one end of the fixing part is sleeved on the rotating shaft, one end of the handle is disposed at both ends of the rotating shaft, and the ratchet is disposed on the rotating shaft and located between the handle and the fixing part. The handle can drive the ratchet to rotate the rotating shaft. The handle includes a handle, a connecting frame, and a driving component. The two ends of the handle are respectively mounted on one end of two connecting frames, and the other ends of the two connecting frames are mounted on the rotating shaft. The driving component is disposed between the two connecting frames and engages with the ratchet teeth of the ratchet. The handle can drive the connecting frame to rotate around the rotating shaft, and the connecting frame drives the ratchet through the driving component, thereby driving the rotating shaft to rotate. The device is characterized in that: A locking part is provided on the side of the handle near the drive member. A guide bar extends from the drive member toward the locking part. The locking part includes a lock cylinder and a blocking member that can move linearly controlled by the lock cylinder. The blocking member has a locked position and an unlocked position. When the blocking member is in the locked position, its front end abuts against the end of the guide bar to restrict the drive member from moving in the direction of disengaging from the ratchet. When the blocking member is in the unlocked position, its front end moves away from the end of the guide bar, and the drive member can move freely in the direction of disengaging from the ratchet.

2. The anti-theft ratchet binding device according to claim 1, characterized in that: The lock also includes a lock housing fixedly mounted on the handle, and the lock cylinder is rotatably disposed within the lock housing.

3. The anti-theft ratchet binding device according to claim 1, characterized in that: The lock cylinder has a non-circular drive part at its end, and the blocking member has a non-circular drive groove that matches the drive part. The lock cylinder drives the blocking member to move through the cooperation of the drive part and the drive groove.

4. The anti-theft ratchet binding device according to claim 3, characterized in that: The blocking component is fixedly mounted on the drive part of the lock cylinder by a fastener.

5. The anti-theft ratchet binding device according to claim 2, characterized in that: A limiting sleeve is also fitted on the driving part of the lock cylinder, and a limiting block is provided on the upper end face of the lock shell. The limiting sleeve is provided with a limiting groove that cooperates with the limiting block. When the key is turned, the lock cylinder drives the limiting sleeve to rotate, and the limiting block abuts against the end wall of the limiting groove to limit the rotation angle of the lock cylinder.

6. The anti-theft ratchet binding device according to claim 1, characterized in that: A guide plate is fixedly installed on the handle, and a guide hole is opened on the guide plate. The guide strip of the driving component slides through the guide hole.

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