A suitcase combination lock

Abstract

The utility model discloses a kind of luggage coded locks, including the lock body applied to luggage, lock cylinder, stroke pull plate and locking mechanism are equipped in the lock body, wherein the lock cylinder bottom is connected with the stroke pull plate, the stroke pull plate can be moved along horizontal direction with the rotation of the lock cylinder, through-hole is set up in the stroke pull plate, the lock body inner wall surface is formed with the pull plate in upward protruding, the pull plate outer wall surface protruding is formed with the card protrusion of the locking mechanism adaptation clamping, the pull plate has elastic deformation capacity, and one end is inserted into the through-hole, when the stroke pull plate moves towards the lock cylinder direction, the stroke pull plate presses the pull plate and occurs deformation to make the card protrusion separate from the locking mechanism. The technical scheme presented by the utility model, design structure is exquisite, few parts and do not need metal parts, stable and reliable performance, save cost while also reduce assembly difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of lock technology, specifically a combination lock for bags. Background Technology

[0002] For convenience and safety while traveling, luggage is usually equipped with a combination lock. The combination lock is generally controlled by a digital code or key to move the locking hook (zipper tongue) inside the lock, which in turn engages or disengages with the zipper or buckle on the luggage, thus locking or unlocking the luggage. Luggage combination locks are easy to operate, safe and reliable, and have a very wide range of applications.

[0003] For example, CN210483283U discloses a combination lock that is easy for customs to open, including a shell, belonging to the field of combination lock technology. The shell contains a combination mechanism, and a push block is installed on the right side of the combination mechanism. A sliding groove is provided on the top of the shell, and the push block is slidably connected to the sliding groove. A lock cylinder is installed inside the push block... Compared with existing combination locks, the new combination lock that is easy for customs to open can be opened simply by turning the key during customs inspection, and the operation steps are simple.

[0004] Currently, traditional connecting rods are usually made of plastic. Since the connecting rod itself needs to perform both unlocking and locking functions, it is prone to wear and tear after long-term use, which can lead to jamming and affect the service life. Replacing the connecting rod with a metal part would increase the cost, and the advantages of both cannot be achieved at the same time. Secondly, the large number of internal structural components in the traditional lock body increases the overall assembly difficulty and reduces reliability, which cannot meet the growing usage needs. There is still room for improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a combination lock for bags and luggage in order to solve the problems mentioned above.

[0006] The technical solution adopted by this utility model is as follows: A combination lock for bags includes a lock body for use on bags. The lock body is provided with a lock cylinder, a travel pull plate, and a locking mechanism. The bottom of the lock cylinder is connected to the travel pull plate. The travel pull plate can move horizontally as the lock cylinder rotates. A through hole is provided through the travel pull plate. A lever plate is formed by protruding upward on the inner wall of the lock body. A locking protrusion is formed on the outer wall of the lever plate to be adapted to engage with the locking mechanism. The lever plate has elastic deformation capability and one end is inserted into the through hole. When the travel pull plate moves towards the lock cylinder, the travel pull plate presses against the lever plate and deforms, causing the locking protrusion to disengage from the locking mechanism.

[0007] In a preferred embodiment, the locking mechanism includes a zipper tongue and a torsion spring. The zipper tongue is provided with a rotating shaft, and both ends of the rotating shaft are rotatably mounted in the lock body. One end of the torsion spring is fitted onto the convex shaft, and the other end is connected to the lock body. When the zipper tongue disengages from the locking convex shaft, the torsion spring acts on the zipper tongue and provides it with a torque to rotate clockwise.

[0008] In a preferred embodiment, the zipper tongue has an overall V-shaped structure, and the zipper tongue is provided with a locking hook portion and a hook portion that matches the locking protrusion.

[0009] In a preferred embodiment, the cross-section of the card protrusion is triangular, and the end faces of the card protrusion, the card hook portion, and the locking hook portion are all provided with arc-shaped transition surfaces.

[0010] In a preferred embodiment, the width of the through hole is greater than the thickness of the dial plate.

[0011] In a preferred embodiment, the lock body is provided with a track groove, and the travel pull plate is disposed in the track groove and can slide along the track groove.

[0012] In a preferred embodiment, the lock body has a hole corresponding to the zipper tongue, and the lock body is also provided with a combination lock module.

[0013] In a preferred embodiment, one end of the travel pull plate is provided with a waist-shaped groove, the bottom of the lock cylinder is provided with a circular boss extending into the waist-shaped groove, the two ends of the circular boss protrude to form protrusions, and the edge of the waist-shaped groove protrudes upward to form a retaining edge.

[0014] In a preferred embodiment, there are two of each of the dial plate and the locking mechanism.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: a through hole is reserved on the travel pull plate, and a lever plate that can reciprocate with the movement of the travel pull plate is provided in the lock body. When unlocking, the lock cylinder is rotated, which synchronously drives the travel pull plate to move. During the movement of the travel pull plate, the lever plate is deformed, causing the locking protrusion and the locking hook to separate, thus achieving unlocking. When locking, the zipper is placed downward in the hole. During the pressing process, the lever plate is deformed, and the locking protrusion and the locking hook can be engaged, thus achieving the locking function. Stable locking and unlocking operations can be achieved only through the linkage of the travel pull plate and the lever plate. Compared with traditional unlocking components, it can reduce the number of parts, reduce the overall assembly difficulty and assembly cost. Secondly, the locking and unlocking components are set separately, and the absence of metal parts as substitutes can also reduce the wear of parts. Moreover, since the lever plate itself has deformation capability, it can meet the smoothness of locking and unlocking, and the performance is stable and reliable, and it is not easy to have jamming problems. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal planar structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the planar structure of the present invention in the locked state;

[0018] Figure 3 This is a schematic diagram of the planar structure of the present invention in the unlocked state;

[0019] Figure 4 This is a three-dimensional structural diagram of the mid-stroke pull plate of this utility model;

[0020] Figure 5 This is a simplified three-dimensional structural diagram of the lock body (excluding the bottom cover) in this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the zipper tongue in this utility model.

[0022] The markings in the diagram are: 1-lock body, 11-toggle plate, 12-hole, 13-locking protrusion, 14-track groove, 2-combination lock module, 3-lock cylinder, 31-circular boss, 4-travel pull plate, 41-through hole, 42-waisted groove, 5-torsion spring, 6-zipper tongue, 61-protruding shaft, 62-lock hook, 63-locking hook, 64-sloping surface. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1-6A combination lock for bags includes a lock body 1 for use on bags. The lock body 1 contains a lock cylinder 3, a travel plate 4, and a locking mechanism. The bottom of the lock cylinder 3 is connected to the travel plate 4, which can move horizontally as the lock cylinder 3 rotates. A through hole 41 is provided in the travel plate 4. A lever 11 protrudes upward from the inner wall of the lock body 1, and a locking protrusion 13 protrudes from the outer wall of the lever 11 to engage with the locking mechanism. The lever 11 has elastic deformation capability and one end is inserted into the through hole 41. When the travel plate 4 moves towards the lock cylinder 3, it presses against the lever 11, causing deformation and disengaging the locking protrusion 13 from the locking mechanism. The through hole 41 is provided in the travel plate 4, and the lever 11, which can reciprocate as the travel plate 4 moves, is provided inside the lock body 1. When unlocking, rotating the lock cylinder 3 simultaneously moves the travel plate 4. During the movement of the travel pull plate 4, the push plate 11 is deformed, causing the locking protrusion 13 to separate from the locking mechanism, thus unlocking. When locking, the zipper end (with hole) is inserted into the lock body 1. During the pressing process, the push plate 11 is deformed, and the push plate 11 and the locking mechanism can be engaged, thus achieving the locking function. Stable locking and unlocking operations can be achieved solely through the linkage between the travel pull plate 4 and the push plate 11. Compared with traditional unlocking components, this reduces the number of parts, lowers the overall assembly difficulty and assembly cost. Secondly, separating the locking component (here, the push plate 11) and the unlocking component (here, the travel pull plate 4) reduces the wear of parts by eliminating the need for metal parts. Moreover, since the push plate 11 itself has deformation capabilities, it can ensure smoothness during locking and unlocking, resulting in stable and reliable performance and reducing the likelihood of jamming.

[0027] Specifically, the locking mechanism includes a zipper tongue 6 and a torsion spring 5. The zipper tongue 6 is provided with a rotating shaft 61, and both ends of the rotating shaft 61 are rotatably installed inside the lock body 1. One end of the torsion spring 5 is fitted onto the rotating shaft 61, and the other end is connected to the lock body 1. When the zipper tongue 6 disengages from the latch 13, the torsion spring 5 acts on the zipper tongue 6 and provides it with a torque to rotate clockwise. The zipper tongue 6 has a V-shaped structure. The zipper tongue 6 is provided with a locking hook 62 and a latching hook 63 that matches the latch 13. After the travel plate 4 pulls the lever 11 to disengage, the zipper tongue 6 can be driven to rotate clockwise by the rebound force of the torsion spring 5. The zipper tongue 6 can automatically pop out the zipper to complete the unlocking operation.

[0028] In this embodiment, the cross-section of the protrusion 13 is triangular. The end faces of the protrusion 13, the hook part 63, and the lock hook part 62 are all provided with arc-shaped transition surfaces. The design of the protrusion 13 shape makes it easier for users to push the zipper into the lock body and complete the locking operation. The designed arc-shaped transition surface can reduce the wear between the protrusion 13, the hook part 63, and the lock hook during locking and unlocking, and can also avoid the "locking" phenomenon caused by direct collision of the flat end faces, making the operation smoother.

[0029] In this embodiment, the width of the through hole 41 is greater than the thickness of the lever plate 11. This design allows the lever plate 11 to have sufficient clearance when locking. That is, during the process of pressing down the zipper, the lever plate 11 can deform accordingly and will not be blocked by the travel pull plate 4, thus not affecting the locking operation. When the locking mechanism is in the locked state, the lever plate 11 abuts against the right end wall of the travel pull plate 4. The travel pull plate 4 can also limit the position of the lever plate 11, avoiding the problem of mis-locking.

[0030] In this embodiment, refer to Figure 5 As shown, a track groove 14 is provided inside the lock body 1, and the travel pull plate 4 is set in the track groove 14 and can slide along the track groove 14. The designed track groove 14 can ensure that the travel pull plate 4 moves stably in the horizontal direction and can also help limit the installation position of the travel pull plate 4.

[0031] In this embodiment, refer to Figure 1 and Figure 5 As shown, the lock body 1 has a hole 12 corresponding to the zipper tongue 6. The lock body 1 also has a combination lock module 2. When locking, the zipper is placed downwards in the hole 12. During the downward pressing process, the lever 11 is deformed, and the latch 13 and the latch 63 can be engaged, thereby realizing the locking function. The combination lock module is a mature and well-known technology in current luggage locks. The specific structure will not be described here, but it can be seen from the comparison documents.

[0032] In this embodiment, please refer to Figure 1 and Figure 4 As shown, the travel plate 4 has an oblong groove 42 at one end, and the bottom of the lock cylinder 3 has a circular boss 31 that extends into the oblong groove 42. The two ends of the circular boss 31 protrude to form protrusions 3, and the edge of the oblong groove 42 protrudes upward to form a stop. The stop is located within the running trajectory of the protrusion 3. During the rotation of the lock cylinder 3, the circular boss 31 can be driven to rotate in the oblong groove 42. During the rotation of the circular boss 31, the cooperation of the protrusion 3 and the stop can drive the travel plate 4 to move in sync, thereby realizing the unlocking operation.

[0033] In this embodiment, there are two levers 11 and two locking mechanisms. Currently, bag zippers are usually designed with two zipper heads (lock zippers). When the two sets of zippers are closed, the two locking mechanisms can lock the two sets of zippers simultaneously. In other embodiments, the number of zippers can be set according to the different bags, and this is not limited here.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combination lock for bags, comprising a lock body applied to bags, characterized in that, The lock body is provided with a lock cylinder, a travel pull plate, and a locking mechanism. The bottom of the lock cylinder is connected to the travel pull plate, which can move horizontally as the lock cylinder rotates. A through hole is provided through the travel pull plate. A lever plate protrudes upward from the inner wall of the lock body. A locking protrusion that is adapted to engage with the locking mechanism is formed on the outer wall of the lever plate. The lever plate has elastic deformation capability and one end is inserted into the through hole. When the travel pull plate moves towards the lock cylinder, the travel pull plate presses against the lever plate and deforms, causing the locking protrusion to disengage from the locking mechanism.

2. The combination lock for bags as described in claim 1, characterized in that: The locking mechanism includes a zipper tongue and a torsion spring. The zipper tongue is provided with a rotating shaft, and both ends of the rotating shaft are rotatably installed in the lock body. One end of the torsion spring is fitted onto the convex shaft, and the other end is connected to the lock body. When the zipper tongue disengages from the locking convex shaft, the torsion spring acts on the zipper tongue and provides it with a torque to rotate clockwise.

3. The combination lock for bags as described in claim 2, characterized in that: The zipper tongue has an overall V-shaped structure, and the zipper tongue is provided with a locking hook and a hook that matches the locking protrusion.

4. The combination lock for bags as described in claim 3, characterized in that: The cross-section of the card protrusion is triangular, and the end faces of the card protrusion, the card hook, and the locking hook are all provided with arc-shaped transition surfaces.

5. The combination lock for bags as described in claim 1, characterized in that: The width of the through hole is greater than the thickness of the dial plate.

6. The combination lock for bags as described in claim 1, characterized in that: The lock body is provided with a track groove, and the travel pull plate is disposed in the track groove and can slide along the track groove.

7. The combination lock for bags as described in claim 3, characterized in that: The lock body has holes corresponding to the zipper tongue, and the lock body is also equipped with a combination lock module.

8. The combination lock for bags as described in claim 1, characterized in that: The travel plate has an oblong groove at one end, and the bottom of the lock cylinder has a circular boss that extends into the oblong groove. The two ends of the circular boss protrude to form protrusions, and the edge of the oblong groove protrudes upward to form a retaining edge.

9. The combination lock for bags as described in claim 1, characterized in that: There are two of each of the dial plate and the locking mechanism.

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