A portable combination lock

Abstract

This utility model relates to a portable combination lock, comprising: a rope, a fixing base, and a combination lock body; one end of the rope is connected to the fixing base, and the other end is provided with a lock head that engages with the combination lock body. The lock head can pop out from the combination lock body to unlock. The fixing base has a rotating head connected to the rope, and the rotating head can rotate to tighten the rope. The portable combination lock of this application allows the length of the rope to be adjusted by rotating the rotating head, so that the rope length can be adapted to different sizes and positions, making it highly applicable. Furthermore, by adjusting the length of the rope, cabinet doors, refrigerator doors, etc., can be opened and closed at a certain angle while still remaining locked, providing versatility in use. The rotating head can adopt a ratchet rotation structure, which can self-lock after rotation and be unlocked by operating a button to allow free rotation.

Description

Technical Field

[0001] This utility model relates to the field of combination lock technology, and in particular to a portable combination lock. Background Technology

[0002] As is well known, a mechanical combination lock that can be used for refrigerators, cabinet doors, and drawers is a traditional type of lock. It uses a purely mechanical structure to set and verify the password without the need for electricity, thus having high reliability and durability. Existing mechanical combination locks for refrigerators, cabinet doors, and drawers have been widely used in the field of locks.

[0003] Currently, these types of combination locks generally consist of a lock body, a rope, and a mounting base. One end of the rope is connected to the mounting base, and the other end is inserted into the lock body. Because the rope cannot be moved, it affects the use of various furniture. Therefore, it is necessary to design a combination lock that allows the rope to change length after locking to accommodate different furniture and appliances. Summary of the Invention

[0004] Therefore, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a portable combination lock.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A portable combination lock, comprising: Rope, mounting base, and combination lock body; One end of the rope is connected to the fixed base, and the other end is provided with a lock head that engages with the combination lock body. The lock head can pop out from the combination lock body to unlock. The fixed base has a rotating head that is connected to the rope, and the rotating head can rotate to tighten the rope.

[0006] As an optional implementation, the combination lock body includes a housing and a lock cylinder mechanism, a combination wheel, and a fastening assembly disposed in the housing. The combination wheel is connected to the lock cylinder mechanism, and the lock head passes through the housing and engages with the fastening assembly.

[0007] As an optional implementation, the housing is provided with an unlocking button located at one end of the lock cylinder mechanism.

[0008] As an optional implementation, the fastening assembly includes a locking block with a slot, the lock head being able to engage in the slot, and the unlocking button being able to push the locking block to move so that the slot and the lock head are separated.

[0009] As an alternative implementation, a torsion spring is also provided inside the housing, which can abut against the front end of the lock head that passes through the housing.

[0010] As an optional implementation, a second spring is provided inside the housing to abut against the locking block.

[0011] As an alternative implementation, adhesive is provided on the back of the housing.

[0012] As an optional implementation, one end of the rope is provided with a locking head, and the rotating head is provided with a locking interface for engaging the locking head.

[0013] As an alternative implementation, the bottom surface of the mounting base is also provided with adhesive.

[0014] As an optional implementation, the combination lock body further includes a rolling stabilizer, which includes a plurality of contact protrusions that contact the outer peripheral surface of the combination wheel.

[0015] This portable combination lock allows for rope length adjustment via a rotating head, accommodating different sizes and locations, thus offering high applicability. Adjusting the rope length allows cabinet doors, refrigerator doors, etc., to open and close at a certain angle while remaining locked, providing versatility in use. The rotating head can employ a ratchet mechanism, self-locking after rotation and unlocking via an operation button, allowing for free rotation.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the portable combination lock in the embodiments of this application; Figure 2 This is an exploded view of the portable combination lock in the embodiments of this application; Figure 3 This is a schematic diagram of the lock cylinder structure in an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Rope; 11. Lock head; 12. Lock head; 2. Fixing base; 21. Rotating head; 22. Lock interface; 3. Combination lock body; 31. Housing; 311. Unlock button; 312. Torsion spring; 32. Lock cylinder; 321. Limiting ring; 322. Groove; 33. Lock shaft; 331. Protrusion; 332. First spring; 34. Lock cylinder head; 35. Combination wheel; 36. Lock block; 361. Lock groove; 362. Second spring; 37. Rolling stabilizer; 371. Contact protrusion. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 understood as a limitation on this utility model.

[0020] Please see Figures 1 to 3 This embodiment provides a portable combination lock, which includes: a rope 1, a fixing base 2, and a combination lock body 3.

[0021] One end of the rope 1 is connected to the fixing base 2, and the other end is equipped with a lock head 11 that engages with the combination lock body 3. The lock head 11 can pop out from the combination lock body 3 to unlock. The fixing base 2 and the combination lock body 3 can be fixed to two cabinet doors, a refrigerator and its door, or a window frame and window, respectively. The rope 1 prevents the cabinets, refrigerators, or windows from being opened, thus providing protection. One end of the rope 1 is fixed to the fixing base 2, and the lock head 11 at the other end can engage with the combination lock body 3. When opening, the rope 1 pops out from the combination lock body 3, allowing the cabinets, refrigerators, or windows to be opened.

[0022] The fixed base 2 has a rotating head 21 connected to the rope 1. The rotating head 21 can rotate to tighten the rope 1. By rotating the rotating head 21, the length of the rope 1 can be adjusted, making the rope 1 length adaptable to different sizes and positions, thus offering high applicability. Furthermore, by adjusting the length of the rope 1, cabinet doors, refrigerator doors, etc., can be opened and closed at a certain angle while remaining locked, providing versatility in use. The rotating head 21 can adopt a ratchet rotation structure, which can self-lock after rotation and be unlocked by operating a button, allowing for free rotation.

[0023] Preferably, the combination lock body 3 of this embodiment includes a housing 31 and a lock cylinder mechanism, a combination wheel 35, and a fastening assembly disposed in the housing 31. The combination wheel 35 extends out of the housing 31 and connects to the lock cylinder mechanism. The combination wheel 35 drives the lock cylinder mechanism to open, and the lock head 11 passes through the housing 31 and engages with the fastening assembly. After rotating the combination wheel 35 to the correct position, the lock cylinder mechanism can be opened, and the fastening assembly will spring open the rope 1, completing the unlocking process.

[0024] The lock cylinder mechanism includes a lock cylinder 32 and a lock shaft 33. The combination wheel 35 is sleeved on the lock cylinder 32, and the lock cylinder 32 is sleeved on the lock shaft 33. The end of the lock cylinder 32 is provided with a limiting retaining ring 321, and the inner side of the lock cylinder 32 is provided with a groove 322. The lock shaft 33 is provided with a protrusion 331 that matches the groove 322. In this embodiment, there are two lock cylinders 32 and one lock cylinder head 34. Three combination wheels 35 are provided and respectively fitted onto the two lock cylinders 32 and the lock cylinder head 34. Three protrusions 331 are provided, with the two lock cylinders 32 located between adjacent protrusions 331. The lock cylinder head 34 is located at the end of the lock shaft 33. A limiting ring 321 on the lock cylinder 32 blocks the protrusions 331. When the lock cylinder 32 is not in the correct combination position, the lock shaft 33 cannot move. When the combination wheel 35 drives the lock cylinder 32 to the correct combination position, the groove 322 and the protrusion 331 are aligned, pushing the lock shaft 33, allowing it to move. The side of the housing is provided with an unlocking button 311 for moving the lock shaft 33, and a first spring 332 is fitted onto one end of the lock shaft 33 at the unlocking button 311 for resetting after pressing.

[0025] The fastening assembly includes a locking block 36 with a slot 361 on it. The lock head 11 can be engaged in the slot 361. The unlocking button 311 can push the locking block 36 to move, thereby separating the slot 361 from the lock head 11. A torsion spring 312 is also provided inside the housing 31, which abuts against the front end of the lock head 11 that passes through the housing 31.

[0026] When the rope 1 is locked, the end of the rope 1 (lock head 11) is located on the lower side of the slot 361 and will not disengage from the lock. When unlocking, the unlocking button 311 pushes the lock block 36 to move, and the higher end of the slot 361 moves to the position where it is disengaged from the lock head 11. The rope 1 moves outward under the force of the torsion spring 312, and can disengage from the lock block 36 to unlock.

[0027] The housing 31 is provided with a second spring 362 that abuts against the locking block 36 for resetting the locking block 36.

[0028] Preferably, adhesive is provided on the back of the housing 31, and adhesive is also provided on the bottom surface of the fixing base 2. In use, the adhesive can be directly applied to the desired location, making it convenient to use.

[0029] Preferably, one end of the rope 1 is provided with a locking head 12, and the rotating head 21 is provided with a locking interface 22 for engaging the locking head 12, which facilitates installation.

[0030] Preferably, the combination lock body further includes a rolling stabilizer 37, which includes a plurality of contact protrusions 371 that contact the outer peripheral surface of the combination wheel 35. The contact protrusions 371 of the rolling stabilizer 37 contact the outer peripheral surface of the combination wheel 35, maintaining the stability of the combination wheel 35 through friction, preventing it from rotating back and forth when not in use, and also improving the feel of rotating the combination wheel.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A portable combination lock, characterized in that, include: Rope, mounting base, and combination lock body; One end of the rope is connected to the fixed base, and the other end is provided with a lock head that engages with the combination lock body. The lock head can pop out from the combination lock body to unlock. The fixed base has a rotating head that is connected to the rope, and the rotating head can rotate to tighten the rope.

2. The portable combination lock according to claim 1, characterized in that: The combination lock body includes a housing and a lock cylinder mechanism, a combination wheel, and a fastening assembly disposed in the housing. The combination wheel is connected to the lock cylinder mechanism, and the lock head passes through the housing and engages with the fastening assembly.

3. The portable combination lock according to claim 2, characterized in that: The housing is provided with an unlock button located at one end of the lock cylinder mechanism.

4. The portable combination lock according to claim 3, characterized in that: The fastening assembly includes a locking block with a slot on it. The lock head can be locked in the slot, and the unlocking button can push the locking block to move so that the slot and the lock head are separated.

5. The portable combination lock according to claim 4, characterized in that: The housing is also provided with a torsion spring, which can abut against the front end of the lock head that passes through the housing.

6. The portable combination lock according to claim 5, characterized in that: A second spring is provided inside the housing to abut against the locking block.

7. The portable combination lock according to any one of claims 2-6, characterized in that: The back of the housing is provided with adhesive.

8. The portable combination lock according to claim 7, characterized in that: One end of the rope is provided with a locking head, and the rotating head is provided with a locking interface for engaging the locking head.

9. The portable combination lock according to claim 8, characterized in that: The bottom surface of the mounting base is also provided with adhesive.

10. The portable combination lock according to claim 2, characterized in that: The combination lock body also includes a rolling stabilizer, which includes multiple contact protrusions that contact the outer peripheral surface of the combination wheel.

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