A buckle strap with a lock

Abstract

The application discloses a buckle with lock, which comprises a bandage body and a buckle part. The buckle part comprises a buckle seat, a pressing piece, a rotating shaft, a torsion spring and a locking device. The pressing piece is installed between the two side plates of the buckle seat through the rotating shaft and the torsion spring. One end of the bandage body is fixed to the buckle seat, and the other end is pressed by the pressing teeth of the pressing piece after passing through the pressing piece and the bottom plate. The locking device is a lock installed on the side of the buckle seat. The telescopic part of the lock can be extended or retracted by a key. When the telescopic part is extended to the locking position, it is located directly below the pressing part of the pressing piece, forming a mechanical barrier to completely prevent the pressing piece from being pressed accidentally or maliciously, so that the bandage cannot be loosened. The buckle with lock retains the convenient operation of the traditional buckle, greatly improves the safety and anti-tampering ability, and effectively solves the problem of anti-theft safety in goods transportation and storage.

Description

Technical Field

[0001] This application relates to the field of snap fastener straps, and particularly to a snap fastener strap with a lock. Background Technology

[0002] Buckle straps are a common tool widely used in logistics transportation, cargo securing, and everyday item binding. They typically consist of a strap body and a buckle. The buckle contains a pressing plate mounted via a pivot and a torsion spring. After the free end of the strap body passes through the buckle, the pressing plate, under the action of the torsion spring, engages the strap with its teeth, preventing it from retracting and thus achieving a one-way locking function. To loosen the strap, manually press down on the pressing plate to disengage the teeth from the strap, allowing it to be pulled out.

[0003] However, this traditional snap-on strap has a significant security flaw: its locking function relies solely on the preload of the torsion spring and the structure of the pressing plate, lacking any mechanism to prevent accidental or malicious opening. This means that anyone can easily release the strap by simply pressing down on the pressing part. This is completely unacceptable in applications involving cargo security, transport confidentiality, or tamper-proofing (such as container shipping, valuables transport, and securing shared items).

[0004] To address this issue, some existing technologies employ additional locking mechanisms for the straps, such as using a separate padlock to lock the straps after they have passed through. However, this approach suffers from drawbacks such as bulky structure, cumbersome operation, and increased cost, thus compromising the original convenience of the snap-on straps. Utility Model Content

[0005] The purpose of this application is to provide a new type of snap-on strap that retains the advantages of traditional snap-on straps, such as ease of operation and reliable locking, while effectively preventing the pressure plate from being accidentally or maliciously released, thereby achieving a true safety locking function.

[0006] A lockable snap-on strap includes a strap body and a snap-on portion. The snap-on portion includes a snap-on base, a pressing plate, a rotating shaft, a torsion spring, and a locking device. The snap-on base includes a base plate and two side plates. The pressing plate is mounted between the two side plates via the rotating shaft and the torsion spring. One end of the strap body is fixed to one end of the snap-on base. The other end of the strap body, after binding goods, passes between the pressing plate and the base plate of the snap-on base. The pressing teeth of the pressing plate, under the action of the torsion spring, press the strap tightly against the base plate of the snap-on base. The locking device is installed on one side of the snap-on base. The locking device is a lock. When its telescopic part is extended to the locked position, it is located at the bottom of the pressing part of the pressing plate, used to restrict the downward movement of the pressing part of the pressing plate. The telescopic part can be switched between the locked and unlocked positions by a key operation.

[0007] Furthermore, one side of the pressing plate is provided with an installation groove and a limiting groove. The installation groove is used to accommodate the torsion spring, and the limiting groove is used to install one end of the torsion spring. The other end of the torsion spring is fixed to the side of the clearance groove of the buckle seat.

[0008] Furthermore, the locking device is a telescopic lock.

[0009] Furthermore, a steel wire is provided inside the strap body, and the steel wire extends along the length direction of the strap body.

[0010] Furthermore, the length of the steel wire is the same as the length of the strap body.

[0011] Furthermore, the strap body is woven, and the steel wire is woven and wrapped inside the strap body, located in the middle of its thickness direction.

[0012] The beneficial effects of this application are as follows:

[0013] This application integrates a lock alongside a traditional snap-lock structure, allowing its telescopic section to directly and mechanically block the movement path of the pressing piece. When the lock is locked, its telescopic section extends, physically restricting the possibility of the pressing piece being pressed down. This means that only authorized personnel with the correct key can operate the lock, retract the telescopic section, thereby releasing the restriction on the pressing piece and loosening the strap. This effectively prevents goods from being accidentally or maliciously opened during transportation and storage, greatly improving security and reliability. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a locking buckle strap used to bind goods, according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the structure of the snap fastener provided in one embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the snap fastener from another perspective, provided in an embodiment of this application.

[0017] Figure 4 This is a cross-sectional view of a snap-fit ​​portion provided in an embodiment of this application;

[0018] Figure 5 A schematic diagram of another embodiment of the lockable snap fastener strap provided in one embodiment of this application;

[0019] Figure 6 A cross-sectional view showing a steel wire disposed within the body of a strap according to an embodiment of this application;

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

[0021] 1. Strap body; 2. Buckle part;

[0022] 21. Press-fit seat; 22. Pressing plate; 23. Rotating shaft; 24. Torsion spring; 25. Locking device;

[0023] 221. Base plate; 222. Side plates;

[0024] 251. Telescopic part; 221. Mounting groove; 222. Limiting groove; 11. Steel wire; Detailed Implementation

[0025] 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.

[0026] 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."

[0027] 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.

[0028] like Figures 1 to 4 As shown, a lockable snap-on strap includes a strap body 1 and a snap-on part 2. The snap-on part 2 includes a snap-on seat 21, a pressing plate 22, a rotating shaft 23, a torsion spring 24, and a locking device 25. The snap-on seat 21 includes a base plate 221 and two side plates 222. The pressing plate 22 is installed between the two side plates 222 via the rotating shaft 23 and the torsion spring 24. One end of the strap body 1 is fixed to one end of the snap-on seat 21, and the other end of the strap body 1, after binding the goods Q, passes through the pressing plate 22 and engages with the snap-on seat. Between the base plates 221 of 21, the pressing teeth of the pressing piece 22 press the binding strap tightly onto the base plate 221 of the buckle seat 21 under the action of the torsion spring 24. The locking device 25 is installed on one side of the buckle seat 21. The locking device 25 is a lock. When its telescopic part 251 extends to the locked position, it is located at the bottom of the pressing part of the pressing piece 22 and is used to restrict the downward movement of the pressing part of the pressing piece 22. The telescopic part 251 can be switched between the locked position and the unlocked position by key operation.

[0029] like Figure 5As shown, a mounting groove 221 and a limiting groove 222 are provided on one side of the pressing plate 22. The mounting groove 221 is used to accommodate the torsion spring 24, and the limiting groove 222 is used to install one end of the torsion spring 24. The other end of the torsion spring 24 is fixed to the side of the clearance groove of the buckle seat 21. By setting up a dedicated mounting groove 221 and limiting groove 222, the installation of the torsion spring 24 is more precise and stable, providing a lasting and stable rebound force, ensuring that the pressing teeth always effectively press the strap, and preventing failure due to displacement of the torsion spring 24 during use.

[0030] like Figure 3 As shown, the locking device 25 is a telescopic lock. A telescopic lock is a simple, technologically mature lock with a well-concealed lock cylinder, making it ideal for integration into such confined spaces and effectively preventing unauthorized technical opening.

[0031] like Figure 5 and Figure 6 As shown, a steel wire 11 is provided inside the strap body 1, and the steel wire 11 extends along the length of the strap body 1. The built-in steel wire 11 makes the strap impossible to cut easily with ordinary knives, and can only be destroyed with professional tools, fundamentally solving the fatal weakness of traditional nylon straps that are easily damaged.

[0032] like Figure 5 As shown, the length of the steel wire 11 is the same as the length of the strap body 1. This ensures that the entire strap is fully protected by the steel wire 11 from beginning to end, with no vulnerable section, thus avoiding the safety hazard of being breached due to unprotected areas.

[0033] like Figure 6 As shown, the strap body 1 is woven, and the steel wire 11 is woven and wrapped inside the strap body 1, located in the middle of its thickness direction. By using the weaving method to wrap the steel wire 11 inside and place it in the middle, it can hide and protect the steel wire 11, preventing it from being exposed and corroded or identified; on the other hand, it keeps the strap overall soft, easy to bend, knot and operate, without affecting the normal user experience.

[0034] The working principle of this application is as follows:

[0035] After the free end of the strap body 1 is wrapped around the cargo, it is inserted into the inlet of the buckle part 2 (i.e., the gap between the pressing plate 22 and the base plate 221 of the buckle seat 21). When the free end of the strap is pulled to tighten, the pressing plate 22 is manually pushed, forcing it to overcome the force of the torsion spring 24 and rotate slightly upward around the pivot 23. After the strap passes smoothly, the restoring force of the torsion spring 24 will immediately drive the pressing plate 22 back to its original position, causing its pressing teeth 26 to bite firmly into the strap body 1, using friction to prevent it from loosening in the opposite direction. In this state, the strap achieves one-way self-locking, and the cargo is secured.

[0036] After securing and tightening the straps, the user operates the locking device 25 (such as a telescopic lock) using a key. Turning the key extends the telescopic part 251 of the lock, moving it directly below the pressing part of the pressing plate 22. At this point, the telescopic part 251 forms a robust mechanical stop. Any attempt to press down on the pressing part will be blocked by the extended telescopic part 251 and cannot be performed. Therefore, the engagement of the pressure teeth with the straps cannot be released, and the straps are in a completely locked state, effectively preventing accidental operation and malicious loosening.

[0037] When it is necessary to loosen the strap, the locking device 25 must be operated in reverse using the correct key to retract the telescopic part 251 to the unlocked position, thus disengaging it from the movement space below the pressing part. After the mechanical obstruction is removed, the pressing part can be pressed down by hand as with ordinary snap-on straps to disengage the pressure teeth from the strap, allowing the free end of the strap to be smoothly pulled out and the goods to be released.

[0038] Furthermore, since the strap body 1 is woven with steel wire 11 of the full length, even if someone tries to cut the strap with ordinary tools such as utility knives or scissors to steal the goods, the internal steel wire 11 will form an effective barrier, greatly increasing the difficulty and time required to cut, thus playing a strong role in preventing theft and vandalism.

[0039] 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. A locking buckle strap, characterized in that: The device includes a strap body and a buckle. The buckle includes a buckle base, a pressing plate, a rotating shaft, a torsion spring, and a locking device. The buckle base includes a base plate and two side plates. The pressing plate is mounted between the two side plates via the rotating shaft and the torsion spring. One end of the strap body is fixed to one end of the buckle base. The other end of the strap body, after binding the goods, passes between the pressing plate and the base plate of the buckle base. The pressing teeth of the pressing plate, under the action of the torsion spring, press the strap tightly against the base plate of the buckle base. The locking device is installed on one side of the buckle base. The locking device is a lock. When its telescopic part is extended to the locked position, it is located at the bottom of the pressing part of the pressing plate, used to restrict the downward movement of the pressing part of the pressing plate. The telescopic part can be switched between the locked and unlocked positions by key operation.

2. The locking buckle strap according to claim 1, characterized in that: The pressing plate has an installation groove and a limiting groove on one side. The installation groove is used to accommodate the torsion spring, and the limiting groove is used to install one end of the torsion spring. The other end of the torsion spring is fixed to the side of the clearance groove of the buckle seat.

3. The locking buckle strap according to claim 1, characterized in that: The locking device is a telescopic lock.

4. The locking buckle strap according to claim 1, characterized in that: The strap body contains a steel wire that extends along the length of the strap body.

5. A locking buckle strap according to claim 4, characterized in that: The length of the steel wire is the same as the length of the strap body.

6. A locking buckle strap according to claim 4, characterized in that: The strap body is woven, and the steel wire is woven and wrapped inside the strap body, located in the middle of its thickness direction.

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