Coded lock and luggage box using same

Abstract

The utility model relates to the technical field of coded locks, in particular to a coded lock and a luggage box using the coded lock, the coded lock comprises a bottom shell, and a lock cylinder group and a connecting rod which are both arranged in the bottom shell; the connecting rod is connected with the bottom shell in a sliding manner; the lock cylinder set is provided with a blocking piece used for blocking or allowing the connecting rod to move. The coded lock further comprises a lock clamp block and a rotating shaft installed on the bottom shell. The axial direction of the rotating shaft is parallel to the connecting rod; the front end of the lock clamp block is provided with a clamp part used for being meshed with an external lock catch. A first convex block is arranged at the rear end of the clamp locking block; the connecting rod is provided with a second protruding block used for being matched with the first protruding block, and the second protruding block is used for stopping or allowing the lock clamp block to rotate. The first protruding block is provided with a third protruding block used for preventing the connecting rod from resetting. The switch is simple in structure and convenient to open and close.

Description

Technical Field

[0001] This utility model relates to the field of combination lock technology, specifically to a combination lock and a suitcase using the combination lock. Background Technology

[0002] A combination lock is a device used to protect the contents of a suitcase. It is typically installed on the zipper or closure of the suitcase and is locked and unlocked by a combination of numbers or letters. This type of lock prevents unauthorized access to the suitcase, thus protecting personal privacy and valuables.

[0003] The combination lock for bags, patent number CN202320075566.5, features a labor-saving opening and closing mechanism. After the user enters the correct combination, the mechanism pushes the main component, which works in conjunction with a clutch assembly to unlock both ends of the bag. While this design improves ease of operation and user experience, its internal structure is relatively complex. Summary of the Invention

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a combination lock and a suitcase using the combination lock. The position of the lock pincer block has been rearranged, and a pressing method is adopted for unlocking. Its structure is simple and the opening and closing is convenient.

[0005] To achieve the above objectives, the specific solution of a combination lock according to this utility model is as follows: A combination lock includes a base shell, a lock cylinder assembly, and a connecting rod, all disposed within the base shell; the connecting rod is slidably connected to the base shell; a return spring is provided between the base shell and the connecting rod; a baffle plate is provided on the lock cylinder assembly to block or allow the connecting rod to move; the combination lock further includes a locking clamp block and a rotating shaft mounted on the base shell; the axial direction of the rotating shaft is parallel to the connecting rod; the locking clamp block is hinged to the rotating shaft; a return torsion spring is also provided between the locking clamp block and the rotating shaft; the front end of the locking clamp block has a clamping part for engaging with an external latch; the rear end of the locking clamp block has a first protrusion; the connecting rod has a second protrusion for cooperating with the first protrusion to block or allow the locking clamp block to rotate; the first protrusion has a third protrusion for blocking the connecting rod from resetting.

[0006] Further configured, the combination lock also includes a panel assembled with the bottom shell; the connecting rod is provided with a beveled block; the panel is provided with a button for assembly with the beveled block; the bottom of the button abuts against the top surface of the beveled block.

[0007] A further configuration includes a connecting piece on the connecting rod for engaging with the baffle; the connecting piece is perpendicular to the connecting rod; when the password is incorrect, the baffle is in a locked position and engages with the connecting piece; when the password is correct, the baffle is in an unlocked position and is offset from the connecting piece at different heights.

[0008] A further configuration is provided where the top surface of the second protrusion has a guide slope corresponding to the position of the first protrusion.

[0009] Further configured, the clamp portion includes an arc portion and a straight portion; the arc portion and the straight portion are disposed opposite to each other; a strip groove for assembling with the latch is formed between the arc portion and the straight portion.

[0010] Further configured, the lock cylinder assembly includes a lock cylinder housing and a combination wheel that rotates within the lock cylinder housing; one side of the baffle is connected to the lock cylinder housing; the other side of the baffle is provided with a limiting part for engaging with the connecting piece; the baffle is located below the combination wheel; the outer peripheral side of the combination wheel is provided with a groove; the baffle is provided with a latching protrusion for engaging with the groove; when the combination is correct, the latching protrusion is inserted into the groove; the baffle is in the unlocked position; when the combination is incorrect, the latching protrusion is misaligned with the groove, and the latching protrusion abuts against the outer peripheral side of the combination wheel; the baffle is in the locked position.

[0011] The lock cylinder assembly is further configured such that a lifting spring is included; the bottom end of the lifting spring is connected to the lock cylinder housing; and the top end of the lifting spring is connected to the bottom of the baffle plate.

[0012] This utility model also provides a suitcase, the specific solution of which is as follows: it includes an upper shell and a lower shell, the upper shell and the lower shell are connected by a combination lock that can be opened and closed, the combination lock being the combination lock described above.

[0013] The beneficial effects of this utility model are: the locking and unlocking functions of this combination lock can be achieved through a single connecting rod, making the design simple and clear. When the password is incorrect, the connecting rod is locked and cannot move in the unlocking direction. Therefore, even if subjected to external impacts such as collisions or drops, it will not accidentally unlock due to inertia, ensuring the safety and reliability of the lock. Attached Figure Description

[0014] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0015] Figure 1 This is an exploded view of the combination lock of this utility model;

[0016] Figure 2 This is a schematic diagram of the locking mechanism block of the combination lock of this utility model;

[0017] Figure 3 This is a structural schematic diagram of the locking clamp block of the combination lock of this utility model from another perspective;

[0018] Figure 4 This is a schematic diagram of the hidden panel and bottom shell of the combination lock of this utility model.

[0019] Figure 5 This is a schematic diagram showing the engagement of the locking pincer block and the locking latch when the combination lock of this utility model is in the locked state.

[0020] Figure 6 This is a schematic diagram showing the engagement of the locking pincer block and the locking latch when the combination lock of this utility model is in the unlocked state.

[0021] Figure 7 This is a schematic diagram of the lock cylinder assembly.

[0022] The components are as follows: 10. Bottom shell; 11. Connecting rod; 12. Return spring; 13. Panel; 14. Inclined block; 15. Button; 16. Connecting piece; 17. Locking buckle; 2. Lock cylinder assembly; 21. Lock cylinder shell; 22. Combination wheel; 23. Limiting part; 24. Groove; 25. Snap protrusion; 26. Stop plate; 3. Lock clamp block; 31. Clamping part; 311. Arc part; 312. Straight part; 313. Strip groove; 32. First protrusion; 321. Guide inclined surface; 33. Second protrusion; 34. Third protrusion; 35. Rotating shaft; 36. Return torsion spring. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0024] like Figure 1-7As shown, a combination lock according to this embodiment includes a base shell 10, a lock cylinder assembly 2, and a connecting rod 11, all disposed within the base shell 10. The connecting rod 11 is slidably connected to the base shell 10. A return spring 12 is provided between the base shell 10 and the connecting rod 11. The lock cylinder assembly 2 is provided with a baffle 26 for blocking or allowing the connecting rod 11 to move. The combination lock also includes a lock clamp block 3 and a rotating shaft 35 mounted on the base shell 10. The axial direction of the rotating shaft 35 is parallel to that of the connecting rod 11. The locking clamp block 3 is hinged to the rotating shaft 35; a return torsion spring 36 is also provided between the locking clamp block 3 and the rotating shaft 35; the front end of the locking clamp block 3 is provided with a clamping part 31 for engaging with the external latch 17; the rear end of the locking clamp block 3 is provided with a first protrusion 32; the connecting rod 11 is provided with a second protrusion 33 for cooperating with the first protrusion 32, for blocking or allowing the locking clamp block 3 to rotate; the first protrusion 32 is provided with a third protrusion 34 for blocking the resetting of the connecting rod 11.

[0025] When the latch 17 separates from the locking clamp block 3, the locking clamp block 3 is in the released position, the connecting rod 11 is in the unlocked position, the first protrusion 32 separates from the second protrusion 33, and the third protrusion 34 engages with the first protrusion 32.

[0026] When the clamp 31 engages with the latch 17, the clamp block 3 is in the engaged position, the connecting rod 11 is in the snap-fit ​​position, the second protrusion 33 is snap-fitted with the first protrusion 32, and the third protrusion 34 is separated from the first protrusion 32.

[0027] The following is the specific usage process: First, when in the locked state, the connecting rod 11 is in the locked position, the locking clamp block 3 is in the engaged position, and the locking clamp block 3 bites the lock buckle 17.

[0028] When unlocking is required, the correct password is entered, and the stop plate 26 in the lock cylinder assembly 2 moves, allowing the connecting rod 11 to slide to the left to the unlock position. At this time, the return spring 12 is compressed and stored energy. When the second protrusion 33 is completely separated from the first protrusion 32, the lock clamp block 3 will rotate backward to the release position under the action of the return torsion spring 36, and the latch 17 will separate from the lock clamp block 3, completing the unlocking process. At this time, because the third protrusion 34 is set to engage with the second protrusion 33, it can prevent the connecting rod 11 from resetting to the right, ensuring that the second protrusion 33 will not continue to block the first protrusion 32, and the lock clamp block 3 waits for the latch 17 to enter.

[0029] When locking is required, the latch 17 enters the jaws 31 of the locking jaw block 3, causing the locking jaw block 3 to rotate to the engaged position, locking the latch 17. At this time, the third protrusion 34 gradually separates from the second protrusion 33. When the return spring 12 is released, it causes the connecting rod 11 to move to the right to the locking position. The second protrusion 33 on the connecting rod 11 will engage with the first protrusion 32, keeping the locking jaw block 3 in the engaged position. The baffle 26 of the lock cylinder assembly 2 then locks the connecting rod 11 back into the locked position.

[0030] Specifically, there are two locking clamp blocks 3 and two rotating shafts 35. Each end of the connecting rod 11 is provided with a second protrusion 33. The two locking clamp blocks 3 are respectively mounted on the bottom shell 10 through the rotating shafts 35.

[0031] This design not only simplifies the structure of the combination lock but also ensures ease of operation and security, while improving the overall reliability of the combination lock. The connecting rod 11 of this combination lock has a simple structure and high adaptability, and is suitable for both push-to-unlock and pull-to-unlock methods.

[0032] like Figure 1 , 4 As shown in the figure, a combination lock of this embodiment further includes a panel 13 assembled with the bottom shell 10; a beveled block 14 is provided on the connecting rod 11; a button 15 is provided on the panel 13 for assembly with the beveled block 14; the bottom of the button 15 abuts against the top surface of the beveled block 14.

[0033] In use, after entering the correct password, press button 15 on panel 13. Button 15 applies pressure to inclined block 14, which is pushed by button 15, causing connecting rod 11 to slide to the left to the unlock position. This design not only makes operation more intuitive and convenient, but also ensures the smoothness and reliability of mechanical action.

[0034] like Figure 1 , 4 As shown in this embodiment, a combination lock has a connecting rod 11 with a connecting piece 16 for engaging with the baffle 26. The connecting piece 16 is perpendicular to the connecting rod 11. When the password is incorrect, the baffle 26 is in the locked position and engages with the connecting piece 16. When the password is correct, the baffle 26 is in the unlocked position and is offset from the connecting piece 16 at different heights.

[0035] The connecting piece 16 and the connecting rod 11 can be connected by screws. This arrangement makes full use of the space in the base shell 10, ensuring a secure connection and precise interaction between the two. The connection between the connecting piece 16 and the baffle 26 is simple and secure. By controlling the movement of the connecting piece 16, the movement of the connecting rod 11 can be limited.

[0036] like Figure 1 , 4 As shown in the figure, in a combination lock of this embodiment, the top surface of the second protrusion 33 is provided with a guide slope 321 corresponding to the position of the first protrusion 32.

[0037] The above configuration ensures that the first protrusion 32 smoothly and accurately engages with the second protrusion 33 during the transition of the locking clamp block 3 from the released position to the engaged position. The guide ramp 321 reduces the frictional resistance that may occur when the two parts come into contact, ensuring smoother operation of the latch 17 and improving the overall user experience and reliability of the combination lock.

[0038] like Figure 2-6 As shown, in this embodiment of a combination lock, the clamp portion 31 includes an arc portion 311 and a straight portion 312; the arc portion 311 and the straight portion 312 are disposed opposite to each other; a strip groove 313 for assembling with the latch 17 is formed between the arc portion 311 and the straight portion 312.

[0039] Specifically, when locking, the front end of the latch 17 is aligned with the slot 313 and inserted. As insertion proceeds, the front end of the latch 17 presses against the straight part 312, and with the cooperation of the rotating shaft 35, the locking clamp block 3 rotates, storing energy in the return spring 12 to prepare for the subsequent reset action. When the latch 17 is fully inserted, the arc-shaped part 311 on the locking clamp block 3 precisely engages with the latch 17, tightly locking the latch 17 and completing the locking action. The entire process is smooth and natural, ensuring the safety and reliability of the lock.

[0040] like Figure 7 As shown, in this embodiment of a combination lock, the lock cylinder assembly 2 includes a lock cylinder shell 21 and a combination wheel 22 that rotates within the lock cylinder shell 21; one side of a baffle 26 is connected to the lock cylinder shell 21; the other side of the baffle 26 is provided with a limiting part 23 for engaging with the connecting piece 16; the baffle 26 is located below the combination wheel 22; the outer peripheral side of the combination wheel 22 is provided with a groove 24; the baffle 26 is provided with a locking protrusion 25 for assembling with the groove 24; when the combination is correct, the locking protrusion 25 is inserted into the groove 24; the baffle 26 is in the unlocked position; when the combination is incorrect, the locking protrusion 25 is misaligned with the groove 24, and the locking protrusion 25 abuts against the outer peripheral side of the combination wheel 22; the baffle 26 is in the locked position.

[0041] It should be noted that the combination wheel 22 has a conventional structure. The above configuration allows the stop plate 26 to swing up and down within the lock cylinder housing 21. By rotating the combination wheel 22, the groove 24 can be engaged or disengaged from the latching protrusion 25, thereby controlling the position of the stop plate 26 and thus controlling whether the connecting rod 11 can move within the bottom housing 10.

[0042] When the user rotates the combination wheel 22 to the correct combination position, the latch 25 will accurately insert into the corresponding groove 24, putting the stop plate 26 in the unlocked position. At this time, the stop plate 26 is misaligned with the connecting piece 16, allowing the connecting rod 11 to slide freely, completing the unlocking action.

[0043] When the combination is incorrect, the latch 25 will disengage from the groove 24, and the surface of the stop 26 will abut against the outer peripheral side of the combination wheel 22. In this case, the stop 26 will remain in the locked position, engaging with the connecting piece 16 to prevent any movement of the connecting rod 11 and ensure that the lock is fully locked.

[0044] like Figure 7 As shown in the figure, in a combination lock of this embodiment, the lock cylinder assembly 2 further includes a lifting spring (not shown in the figure); the bottom end of the lifting spring is connected to the lock cylinder shell 21; the top end of the lifting spring is connected to the bottom of the baffle 26.

[0045] The lifting spring continuously provides appropriate elasticity, ensuring that all components within the lock cylinder assembly 2 maintain proper contact at all times. This stable support reduces mechanical failures caused by wear or loosening, thus significantly extending the service life of the lock cylinder assembly 2. Even after prolonged and frequent use, the lock cylinder assembly 2 retains its initial accuracy and reliability.

[0046] A suitcase includes an upper shell and a lower shell, wherein the upper shell and the lower shell are connected by a combination lock that can be opened and closed, wherein the combination lock is the combination lock described above.

[0047] The upper and lower shells of the suitcase are hinged together, and a combination lock is provided at the opening between the upper and lower shells. The combination lock can be located in the upper shell, and the latch can be located in the lower shell. When the combination lock is opened and closed, if the combination is correct, pressing the button rotates the locking jaws, releasing the latch and allowing the upper and lower shells to open. When the upper and lower shells close, the latch drives the locking jaws inside the combination lock to rotate and engage. Under the action of the return spring, the first protrusion engages with the second protrusion, completing the locking process.

[0048] The above description is only a preferred embodiment of the present utility model. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included within the protection scope of the present utility model patent application.

Claims

1. A combination lock, characterized in that: Includes a bottom shell (10) and a lock cylinder assembly (2) and a connecting rod (11) both disposed within the bottom shell (10); The connecting rod (11) is slidably connected to the bottom shell (10); A return spring (12) is provided between the bottom shell (10) and the connecting rod (11); The lock cylinder assembly (2) is provided with a baffle (26) for blocking or allowing the connecting rod (11) to move; The combination lock also includes a locking clamp block (3) and a rotating shaft (35) mounted on the bottom shell (10); the axial direction of the rotating shaft (35) is parallel to the connecting rod (11); the locking clamp block (3) is hinged to the rotating shaft (35); a return torsion spring (36) is also provided between the locking clamp block (3) and the rotating shaft (35); The front end of the locking clamp block (3) is provided with a clamping part (31) for engaging with the external latch (17); the rear end of the locking clamp block (3) is provided with a first protrusion (32); the connecting rod (11) is provided with a second protrusion (33) for cooperating with the first protrusion (32) to block or allow the locking clamp block (3) to rotate; the first protrusion (32) is provided with a third protrusion (34) for blocking the connecting rod (11) from resetting.

2. A combination lock according to claim 1, characterized in that: The combination lock also includes a panel (13) assembled with the bottom shell (10); a beveled block (14) is provided on the connecting rod (11); a button (15) is provided on the panel (13) for assembly with the beveled block (14); the bottom of the button (15) abuts against the top surface of the beveled block (14).

3. A combination lock according to claim 1, characterized in that: The connecting rod (11) is provided with a connecting piece (16) for cooperating with the baffle (26); the connecting piece (16) is arranged perpendicularly to the connecting rod (11); When the password is incorrect, the baffle (26) is in the locked position, and the baffle (26) is engaged with the connecting piece (16); When the password is correct, the baffle (26) is in the unlocked position, and the baffle (26) is offset from the connecting piece (16).

4. A combination lock according to claim 1, characterized in that: The top surface of the second protrusion (33) is provided with a guide slope (321) corresponding to the position of the first protrusion (32).

5. A combination lock according to claim 1, characterized in that: The clamp (31) includes an arc portion (311) and a straight portion (312); the arc portion (311) and the straight portion (312) are disposed opposite to each other; a strip groove (313) for assembling with the latch (17) is formed between the arc portion (311) and the straight portion (312).

6. A combination lock according to claim 3, characterized in that: The lock cylinder assembly (2) includes a lock cylinder housing (21) and a combination wheel (22) that rotates within the lock cylinder housing (21); One side of the baffle (26) is connected to the lock cylinder shell (21); the other side of the baffle (26) is provided with a limiting part (23) for engaging with the connecting piece (16); the baffle (26) is located below the combination wheel (22); The outer peripheral side of the password wheel (22) is provided with a groove (24); the baffle (26) is provided with a locking protrusion (25) for fitting with the groove (24); When the password is correct, the card protrusion (25) is inserted into the groove (24); the baffle (26) is in the unlocked position; When the password is incorrect, the card protrusion (25) is misaligned with the groove (24), and the card protrusion (25) abuts against the outer peripheral side of the password wheel (22); the baffle (26) is in the locked position.

7. A combination lock according to claim 6, characterized in that: The lock cylinder assembly (2) also includes a lifting spring; the bottom end of the lifting spring is connected to the lock cylinder shell (21); the top end of the lifting spring is connected to the bottom of the baffle (26).

8. A suitcase, comprising an upper shell and a lower shell, wherein the upper shell and the lower shell are closable via a combination lock, characterized in that: The combination lock is the combination lock as described in any one of claims 1-7.

Images