A coded lock for luggage

Abstract

This invention relates to the field of lock technology, specifically to a combination lock for bags and luggage. It includes a lock case, a hook slidably mounted within the lock case, a button that slides along the lock case and abuts against the hook, a lock block, and a combination wheel assembly. An unlocking channel is formed within the lock case. The lock block is placed within the unlocking channel and can slide along it. The unlocking channel has a first opening on its side facing the hook, and the end of the hook is inserted into the first opening. The combination wheel assembly includes a movable piece that slides along the lock case. The unlocking channel has a second opening on its side facing the movable piece, and the movable piece has a second latching protrusion that inserts into the second opening. The lock block uses a sliding mechanism to assist in locking or unlocking, replacing the previous rotating or turning motion of the lock block. This simplifies the lock block's structure, improves its structural strength, thereby simplifying the overall structure of the combination lock, extending its service life, and enhancing its anti-theft performance.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and more specifically to a combination lock for bags and luggage. Background Technology

[0002] See patent document CN2021202503072, which discloses a combination lock for bags, including a lock case, a hook mechanism, and a combination wheel lock mechanism. The hook mechanism includes a hook plate, a hook, and a hook reset member. The hook plate is slidably disposed within the lock case, which has a push block and a locking member. In this patent document, the push block is essentially a button. In the unlocked state of the combination lock mechanism, pressing the push block causes it to rotate, which in turn causes the hook mechanism to unlock. In the locked state of the combination lock mechanism, the locking mechanism prevents the locking member from rotating, thus achieving locking. This type of combination lock for bags has at least two drawbacks. First, the locking mechanism has a complex structure, requiring multiple legs to be formed on its outer periphery, which makes production difficult. Furthermore, the locking mechanism is relatively small, making each leg prone to breakage, resulting in poor anti-theft performance and a short service life. Second, the locking mechanism uses a rotating working mode, requiring a pivot to be installed inside the lock housing. Additionally, resetting the locking mechanism requires unlocking an external torsion spring, leading to a large number of parts in the entire combination lock, making assembly difficult and resulting in a complex overall structure. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a combination lock for bags that solves the problem of complex structures in the past.

[0004] The objective of this invention is achieved through the following technical solution: This application provides a combination lock for bags, including a lock shell, a lock hook slidably installed in the lock shell, a button that can slide along the lock shell and abut against the lock hook, a lock block, and a combination wheel assembly. An unlocking channel is formed in the lock shell, the lock block is placed in the unlocking channel and can slide along the unlocking channel, the unlocking channel has a first opening on the side facing the lock hook, the end of the lock hook is inserted into the first opening, the combination wheel assembly includes a movable piece that can slide along the lock shell, the unlocking channel has a second opening on the side facing the movable piece, the movable piece has a second locking protrusion that inserts into the second opening; when locking, the movable piece slides to the locking position, the second locking protrusion is placed into the unlocking channel through the second opening and abuts against the lock block to restrict the movement of the lock block, the button, lock hook, and lock block abut against each other in sequence to achieve locking;

[0005] When unlocking, the movable piece slides to the unlock position, the second latch can slide along the second opening and disengage from the unlocking channel, the button is pressed and the locking hook is driven to slide into the first opening, so that the locking hook pushes the locking block to slide along the unlocking channel to achieve unlocking.

[0006] The locking block can be one of the following: cylinder, sphere, hemisphere, or cone.

[0007] The lock housing also includes a lock cylinder, which is rotatably installed inside the lock housing. The unlocking channel has a third opening on the side facing the lock cylinder, and a third locking protrusion extends from the lock cylinder into the third opening. When locking, the lock cylinder rotates to the locked position, and the third locking protrusion is inserted into the unlocking channel through the third opening and presses against the lock block to achieve locking. When unlocking, the lock cylinder rotates to the unlocking position, and the third locking protrusion is disengaged from the unlocking channel through the third opening, so that the lock block can slide along the unlocking channel to achieve unlocking.

[0008] The combination wheel assembly includes a combination wheel, a switching wheel, and a switching plate. The combination wheel is rotatably mounted inside the lock housing, the switching wheel is held below the combination wheel, and a switching spring is provided between the switching wheel and its corresponding combination wheel. A first slot is provided on the outer peripheral side of the switching wheel, a movable plate is mounted below the switching wheel, and the movable plate has a mounting hole for the switching wheel to pass through. The wall of the mounting hole extends toward the first slot to form an unlocking part. When locked, the unlocking part abuts against the outer peripheral side of the switching wheel, and the first slot is misaligned with the unlocking part. When unlocked, the unlocking part is inserted into the first slot.

[0009] The switching plate is installed below the movable plate and can slide along the lock housing. The switching plate has a switching groove and a limiting groove that communicates with the switching groove. The switching groove and the limiting groove are spaced apart in the height direction and staggered in the horizontal direction.

[0010] When the code-switching chip is in the non-switching position, the code-switching wheel is located in the limiting groove, the code wheel and the code-switching wheel are in a locked state, and the code-switching spring is in a compressed state; when the code-switching chip is in the code-switching position, the code-switching wheel is located in the code-switching groove, the code-switching spring is in an extended state and drives the code wheel and the code-switching wheel to separate in the height direction.

[0011] The outer circumferential side of the code-adjusting wheel is provided with a second slot that is opposite to the first slot; the groove wall of the code-adjusting groove extends upward to form a limiting part, which is opposite to the limiting groove; when the code-adjusting piece is in the code-adjusting position, the limiting part is inserted into the second slot.

[0012] The bottom surface of the switching chip has two limiting grooves arranged at intervals along the sliding direction of the switching chip. The inner bottom surface of the lock case extends upward with a protrusion. When the switching chip is in the non-switching position, the protrusion is placed in one of the limiting grooves. When the switching chip is in the switching position, the protrusion is placed in the other limiting groove.

[0013] The outer bottom surface of the lock case has a deformation groove that is opposite to the protrusion.

[0014] The movable piece extends towards the code piece with a retaining part, and the code piece has a retaining groove for the retaining part to be inserted. In the locked state, the retaining part abuts against the groove wall of the retaining groove to restrict the sliding of the code piece. In the unlocked state, the retaining part and the retaining groove separate along the sliding direction of the code piece.

[0015] The movable piece extends toward the second opening to form a second latching protrusion that is inserted into the second opening. The second latching protrusion and the movable piece are configured as an integral structure. When unlocking, the movable piece slides to the unlocking position, and the second latching protrusion disengages from the unlocking channel through the second opening.

[0016] The second locking protrusion and the movable piece are separate structures. The movable piece has a groove on the side facing the second opening. One side of the second locking protrusion is placed in the groove. The second locking protrusion can slide along the groove. A thrust spring is provided between the second locking protrusion and the groove wall to drive the second locking protrusion to slide in the locking direction.

[0017] The combination lock for bags of the present invention has the following beneficial effects:

[0018] (1) The lock block of the bag combination lock of this application adopts a sliding method to assist in locking or unlocking, which replaces the previous movement method of rotating or turning the lock block, simplifies the structure of the lock block, improves the structural strength of the lock block, thereby simplifying the overall structure of the combination lock, extending the service life of the combination lock, and improving the anti-theft performance of the combination lock.

[0019] (2) The combination lock has a simple and compact overall structure, high transmission efficiency, and long service life. In addition, the code adjustment piece is directly limited by the movable piece, which simplifies the code adjustment structure and further simplifies the structure of the combination lock. Attached Figure Description

[0020] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the combination lock in Example 1.

[0022] Figure 2 This is an exploded view of the combination lock in Example 1.

[0023] Figure 3 This is a schematic diagram of the combination lock in the locked state in Example 1.

[0024] Figure 4 This is a schematic diagram of the locking hook structure in Example 1.

[0025] Figure 5 This is a schematic diagram of the shell structure in Example 1.

[0026] Figure 6 This is a schematic diagram of the combination lock in the unlocked state of the combination wheel assembly in Example 1.

[0027] Figure 7 This is a schematic diagram of the combination lock in the unlocked state of the lock cylinder in Example 1.

[0028] Figure 8 This is a schematic diagram of the password wheel assembly in Example 1.

[0029] Figure 9 This is an exploded view of the cipher wheel assembly in Example 1.

[0030] Figure 10 This is a schematic diagram of the modulation chip structure in Example 1.

[0031] Figure 11 This is a schematic diagram of the base plate in Example 1.

[0032] Figure 12 This is a schematic diagram of the structure of the movable piece in Example 1.

[0033] Figure 13 This is a schematic diagram of the combination lock in the unlocked state of the combination wheel assembly in Example 2.

[0034] Figure 14 This is a schematic diagram of the combination lock in the unlocked state of the lock cylinder in Example 2.

[0035] Figure 15 This is a schematic diagram of the password wheel assembly in Example 2.

[0036] Figure 16 This is an exploded view of the cipher wheel assembly in Example 2.

[0037] Reference numerals: front shell 11, bottom shell 12, base plate 13, protrusion 131, deformation groove 132, lock hole 14, button 2, lock hook 3, return spring 30, lock hook body 31, mounting part 32, hook part 33, combination wheel assembly 4, unlocking spring 40, combination wheel 41, code adjustment spring 42, code adjustment wheel 43, first slot 431, second slot 432, movable piece 44, holding part 440, unlocking part 441, slide groove 442, thrust spring 443, code adjustment piece 45, holding groove 450, code adjustment groove 451, limiting groove 452, limiting part 453, limiting groove 454, code adjustment switch 46, lock cylinder 5, lock block 6, first locking protrusion 81, inclined surface 811, second locking protrusion 82, guide inclined surface 821, third locking protrusion 83, unlocking channel 9, first opening 91, second opening 92, third opening 93. Detailed Implementation

[0038] The present invention will be further described in conjunction with the following embodiments.

[0039] Example 1

[0040] One specific embodiment of the combination lock for bags of the present invention is as follows: Figures 1 to 2 As shown, the lock includes a lock housing, which comprises a front shell 11, a base plate 13, and a bottom shell 12 arranged sequentially from top to bottom. The front shell 11 and the bottom shell 12 are fixed together by screws, while the bottom plate 13 is snapped onto the bottom surface of the front shell 11. A mounting cavity for mounting components is formed between the bottom plate 13 and the front shell 11. The front shell 11 has two lock holes 14, and a lock hook 3 is provided in the lock hole 14. The lock hook 3 cooperates with the lock hole 14 to lock the external zipper piece.

[0041] Combination Figure 3 The combination lock also includes a lock hook 3 slidably installed inside the lock case, a button 2 that slides along the lock case and abuts against the lock hook 3, a lock block 6, a combination wheel assembly 4, and a lock cylinder 5. Specifically, the button 2 is T-shaped, which facilitates operation and production. The button 2 and the face shell 11 can be connected by creating a groove in the face shell 11 and forming a protrusion on the button 2. The cooperation between the protrusion and the groove allows the button 2 to slide along the lock case and guides the sliding of the button 2.

[0042] Combination Figure 4 There are two locking hooks 3, which are stacked. Each locking hook 3 includes a hook body 31 that abuts against the button 2. A mounting part 32 extends from the side of the hook body 31 toward the lock hole 14. The mounting part 32 extends toward the lock hole 14 with a hook part 33 for hooking the external zipper piece. A first latching protrusion 81 extends outward from the end of the hook body 31 away from the button 2. In addition, a return spring 30 is provided inside the lock case to drive the locking hooks 3 to move in the locking direction.

[0043] As an improvement, combining Figure 5 An unlocking channel 9 is formed inside the lock housing (face shell 11). The lock block 6 is placed inside the unlocking channel 9 and can slide along the unlocking channel 9. It should be noted that the lock block 6 can be one of a cylinder, a sphere, a hemisphere, or a cone. In this embodiment, the lock block 6 adopts a hollow cylindrical shape, which not only ensures that the lock block 6 has sufficient structural strength, but the hollow structure can also reduce the material used to manufacture the lock block 6, saving costs. The unlocking channel 9 has a first opening 91 on the side facing the lock hook 3, and the end of the lock hook 3 (first latching protrusion 81) is inserted into the first opening 91.

[0044] The working principle of the locking block 6 is as follows: When locked, the locking block 6 is limited by other components. When the locking block 6 is fixed and blocks the first opening 91, the first latching protrusion 81 of the locking hook 3 abuts against the outer peripheral side of the locking block 6, thereby preventing the button 2 and the locking hook 3 from sliding relative to the lock shell, thus achieving locking. When unlocking, the lock shell can slide relative to the face shell 11. When external pressure is applied to the button 2, the button 2 pushes the locking hook 3 to slide along the face shell 11 in the unlocking direction. The first latching protrusion 81 abuts against the locking block 6 and applies a force to the locking block 6, thereby driving the locking block 6 to slide along the unlocking channel 9. The locking block 6 releases the locking restriction on the locking hook 3, thus achieving unlocking.

[0045] Combination Figure 4 To improve the smoothness of unlocking, the end face of the first latching protrusion 81 of the lock hook 3 facing the lock block 6 is an upward inclined surface 811 or an arc surface. This ensures that the first latching protrusion 81 and the lock block 6 have a sufficiently large contact area during the unlocking process and can guide the sliding of the lock block 6.

[0046] Combination Figure 6 The combination wheel assembly 4 includes a movable piece 44 that can slide along the lock case. The movable piece 44 slides in the same direction as the lock hook 3, reciprocating along the length of the lock case. The unlocking channel 9 has a second opening 92 on the side facing the movable piece 44, and the movable piece 44 has a second locking protrusion 82 that fits into the second opening 92. In other embodiments, the second locking protrusion 82 can be integrated with the movable piece 44, but this structure has the problem of insufficient structural strength. Since the second locking protrusion 82 and the movable piece 44 are integrated, the joint surface between the second locking protrusion 82 and the movable piece 44 is prone to breakage, and the stress is too concentrated. Therefore, in order to solve this problem, in this embodiment, the second locking protrusion 82 and the movable piece 44 adopt a separate structure. Figure 12The movable piece 44 has a groove 442 on the side facing the second opening (locking block 6). One side of the second locking protrusion 82 is placed in the groove 442, and the second locking protrusion 82 can slide along the groove 442. A thrust spring 443 is provided between the second locking protrusion 82 and the groove wall of the groove 442 to drive the second locking protrusion 82 to slide in the locking direction. In order to facilitate the fixing of the thrust spring 443 and limit the sliding distance of the second locking protrusion 82, both the second locking protrusion 82 and the groove 442 are provided with auxiliary protrusions. When locking, the movable piece 44 moves to the locking position, and the groove wall of the groove 442 of the movable piece 44 abuts against the second locking protrusion 82 in the locking direction to limit the sliding of the second locking protrusion 82, so that the second locking protrusion 82 is confined within the unlocking channel 9. When unlocking, the movable piece 44 slides in the unlocking direction. When the slide 442 releases its resistance to the second protrusion 82, the second locking protrusion 82 can slide relative to the movable piece 44 within the slide 442. However, since the thrust spring 443 uses its own elasticity to push the second locking protrusion 82, the second locking protrusion 82 will always be located in the unlocking channel 9 when there is no other external force. After the external force is applied to the button 2, the externally applied force will indirectly act on the second locking protrusion 82, pushing the second locking protrusion 82 to slide and retract in the unlocking direction. In the unlocked state, the thrust spring 443 is in a compressed state. By designing the second locking protrusion 82 and the movable piece 44 as a separate structure, the force direction is optimized, the structural strength between the second protrusion 82 and the movable piece 44 is improved, the anti-theft performance of the combination lock is further improved, and the service life is extended. To further improve the smoothness of the combination lock during the locking process and to drive the sliding lock block 6 back to its original position, the side of the second latch 82 (the side that contacts the lock block 6) is a downward-sloping guide slope 821. When the second latch 82 moves in the locking direction, the distance between the guide slope 821 of the second latch 82 and the inner wall of the unlocking channel 9 gradually decreases. The guide slope 821 can then squeeze and guide the lock block 6 back to its original position, thereby replacing the previous method where the lock block 6 needed to rely on an external torsion spring to return to its original position. This further reduces the number of parts used and lowers manufacturing costs.

[0047] The working process of the combination wheel assembly 4 is as follows: When locking, the movable piece 44 slides to the locked position, the second locking protrusion 82 is inserted into the unlocking channel 9 through the second opening 92 and abuts against the lock block 6 to restrict the movement of the lock block 6. The button 2, the lock hook 3, and the lock block 6 abut against each other in sequence to achieve locking. When unlocking, the movable piece 44 slides to the unlocking position, the second locking protrusion 82 disengages from the unlocking channel 9 through the second opening 92, the button 2 is pressed and the lock hook 3 is driven to slide into the first opening 91, so that the lock hook 3 pushes the lock block 6 to slide along the unlocking channel 9 to achieve unlocking.

[0048] In another embodiment, if the combination lock only needs to be locked or unlocked by the combination wheel assembly 4, the unlocking channel 9 can be set as a blind path. However, in this embodiment, in order to facilitate user use, the combination lock of this embodiment can also be unlocked by a key. Therefore, the unlocking channel 9 is a dual channel, one channel is blocked by the combination wheel assembly 4 to achieve locking, and the other channel is blocked by the lock cylinder 5 to achieve locking.

[0049] Combination Figure 7 The lock cylinder 5 is rotatably installed inside the lock housing. Lock cylinder 5 is a standard lock cylinder 5; it can be turned when a key is inserted, but cannot be turned without a key. Combined with... Figure 5 The unlocking channel 9 has a third opening 93 on its side facing the lock cylinder 5. A third locking protrusion 83 extends from the lock cylinder 5 into the third opening 93. The working process of the lock cylinder 5 is as follows: When locking, the lock cylinder 5 rotates to the locked position, and the third locking protrusion 83 is inserted into the unlocking channel 9 through the third opening 93 and presses against the lock block 6, thus achieving locking. When unlocking, the lock cylinder 5 rotates to the unlocked position, and the third locking protrusion 83 disengages from the unlocking channel 9 through the third opening 93, allowing the lock block 6 to slide along the unlocking channel 9, thus achieving unlocking.

[0050] Combination Figures 8 to 10 The combination wheel assembly 4 also includes a combination wheel 41, a switching wheel 43, and a switching plate 45. The combination wheel 41 is rotatably mounted inside the lock housing. The switching wheel 43 is engaged below the combination wheel 41. It should be noted that the combination wheel 41 and the switching wheel 43 are engaged using a slot and block mechanism. When the switching wheel 43 and the combination wheel 41 are engaged, the combination wheel 41 rotates, and the switching wheel 43 rotates. When the switching wheel 43 and the combination wheel 41 are not engaged, the combination wheel 41 rotates, and the switching wheel 43 does not rotate. Therefore, to achieve the switching function, a switching spring 42 is provided between the switching wheel 43 and the combination wheel 41. To enable the switching wheel 43 to lock the movable plate 44, a first slot 431 is provided on the outer peripheral side of the switching wheel 43. The movable plate 44 is mounted below the switching wheel 43 and has a mounting hole through which the switching wheel 43 passes. The wall of the mounting hole extends towards the first slot 431 to form an unlocking part 441. Figure 3 and Figure 7 When locked, the unlocking part 441 abuts against the outer peripheral side of the adjustment wheel 43 and the first slot 431 is misaligned with the unlocking part 441; when unlocked, the unlocking part 441 is placed into the first slot 431. The lock housing is also provided with an unlocking spring 40 that drives the movable piece 44 to move toward the unlocked state. Thus, the unlocking spring 40 can push the movable piece 44 to slide in the unlocking direction in the unlocked state, so that the unlocking part 441 is inserted into the first slot 431.

[0051] In this embodiment, the switching chip 45 is installed below the movable chip 44, and the switching chip 45 can slide along the lock case. The switching chip 45 has a switching groove 451 and a limiting groove 452 communicating with the switching groove 451. The switching groove 451 and the limiting groove 452 are arranged at intervals in the height direction and staggered in the horizontal direction, thereby forming two grooves with one high and one low or one deep and one shallow.

[0052] The working principle of the code-switching chip 45 is as follows: When the code-switching chip 45 is in the non-switching position, the code-switching wheel 43 is located in the limiting groove 452, the code wheel 41 and the code-switching wheel 43 are in a locked state, and the code-switching spring 42 is in a compressed state. When the code-switching chip 45 is in the code-switching position, the code-switching wheel 43 is located in the code-switching groove 451, the code-switching spring 42 is in an extended state, and drives the code wheel 41 and the code-switching wheel 43 to separate in the height direction.

[0053] In this embodiment, to prevent the code wheel 41 from being adjusted when the code is incorrect, a second slot 432 is provided on the outer peripheral side of the code wheel 43, which is opposite to the first slot 431. A limiting part 453 extends upward from the groove wall of the code groove 451, and the limiting part 453 is opposite to the limiting groove 452. That is, the code wheel 43 can only move into the code groove 451 when it is rotated to the unlocked position. When the code chip 45 is in the code-changing position, the limiting part 453 is inserted into the second slot 432.

[0054] To prevent the dial chip 45 from sliding relative to the lock housing when the password is incorrect, the end of the movable piece 44 extends toward the dial chip 45 (extends downward) to form a retaining part 440. The dial chip 45 has a retaining groove 450 for the retaining part 440 to be inserted. The cooperation relationship between the retaining groove 450 and the retaining part 440 is as follows: in the locked state, the retaining part 440 abuts against the groove wall of the retaining groove 450 to restrict the sliding of the dial chip 45, while in the unlocked state, the retaining part 440 and the retaining groove 450 separate along the sliding direction of the dial chip 45. This allows the movable piece 44 to directly lock the dialing piece 45. When the password is incorrect, the movable piece 44 is in the locked position, and the retaining part 440 abuts against the retaining groove 450, thereby restricting the sliding of the dialing piece 45 and locking it. When the password is correct, the movable piece 44 moves to the unlocked position, and the retaining part 440 slides in the unlocking direction along with the movable piece 44. This releases the retaining part 440 from abutting against the retaining groove 450, thereby releasing the lock on the dialing piece 45 and allowing it to slide relative to the lock case (base plate 13).

[0055] Combination Figure 11 and Figure 2To improve the adjustment feel and limit the sliding position of the dial chip 45, two limiting grooves 454 are provided on the bottom surface of the dial chip 45, spaced apart along the sliding direction of the dial chip 45. A protrusion 131 extends upward from the inner bottom surface of the lock case (the top surface of the base plate 13). The protrusion 131 has a certain elasticity or flexibility. When the dial chip 45 is in the non-adjustment position, the protrusion 131 is placed in one of the limiting grooves 454. When the dial chip 45 is in the adjustment position, the protrusion 131 is placed in the other limiting groove 454. Specifically, a deformation groove 132 is formed on the outer bottom surface of the lock case, which is opposite to the position of the protrusion 131. The groove allows the protrusion 131 to deform to a certain extent, preventing the protrusion 131 from locking the dial chip 45.

[0056] In this embodiment, the combination wheel assembly 4 also includes a code switch 46. The code switch 46 and the code plate 45 are integrally formed. The end of the code switch 46 is exposed on the outer side of the lock shell, which replaces the previous separate structure of the code switch 46 and the code plate 45, reduces the number of parts, further simplifies the structure of the combination lock, and improves the structural strength of the combination wheel assembly 4.

[0057] This invention discloses a combination lock for bags, in which the locking block 6 uses a sliding mechanism to assist in locking or unlocking, replacing the previous method of rotating or turning the locking block 6. This simplifies the structure of the locking block 6, improves its structural strength, and thus simplifies the overall structure of the combination lock, extends its service life, and enhances its anti-theft performance. The overall structure of the combination lock is simple and compact, with high transmission efficiency and a long service life. Furthermore, the code adjustment piece 45 is directly limited by the movable piece 44, simplifying the code adjustment structure and further simplifying the overall structure of the combination lock.

[0058] Example 2

[0059] This is a second specific embodiment of the combination lock for bags according to the present invention. It shares the same technical features and solutions as Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that: Figures 13 to 16 As shown, the second latching protrusion 82 can be integrated with the movable piece 44, with the movable piece 44 extending toward the second opening 92 to insert the second latching protrusion 82 into the second opening 92.

[0060] To further improve the smoothness of the combination lock during the locking process and to drive the sliding lock block 6 back to its original position, the side of the second latch 82 (the side that contacts the lock block 6) is a downward-sloping guide slope 821. When the second latch 82 moves in the locking direction, the distance between the guide slope 821 of the second latch 82 and the inner wall of the unlocking channel 9 gradually decreases. The guide slope 821 can then squeeze and guide the lock block 6 back to its original position, thereby replacing the previous method where the lock block 6 needed to rely on an external torsion spring to return to its original position. This further reduces the number of parts used and lowers manufacturing costs.

[0061] The working process of the combination wheel assembly 4 is as follows: When locking, the movable piece 44 slides to the locked position, the second locking protrusion 82 is inserted into the unlocking channel 9 through the second opening 92 and abuts against the lock block 6 to restrict the movement of the lock block 6. The button 2, the lock hook 3, and the lock block 6 abut against each other in sequence to achieve locking. When unlocking, the movable piece 44 slides to the unlocking position, the second locking protrusion 82 disengages from the unlocking channel 9 through the second opening 92, the button 2 is pressed and the lock hook 3 is driven to slide into the first opening 91, so that the lock hook 3 pushes the lock block 6 to slide along the unlocking channel 9 to achieve unlocking.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A combination lock for luggage, for installation on a luggage with a zipper structure, comprising a lock housing, a hook slidably mounted within the lock housing, a button slidable along the lock housing and abutting against the hook, a lock block, and a combination wheel assembly, wherein the hook is used to lock or unlock the zipper pull of the luggage, characterized in that, An unlocking channel is formed within the lock housing. The lock block is placed within the unlocking channel and can slide along the unlocking channel. The unlocking channel has a first opening on its side facing the lock hook. The lock hook includes a lock hook body that abuts against the button. A first latching protrusion extends outward from the end of the lock hook body away from the button. The first latching protrusion is inserted into the first opening. The combination wheel assembly includes a movable piece that can slide along the lock housing. The sliding direction of the movable piece is the same as the sliding direction of the lock hook. The unlocking channel has a second opening on its side facing the movable piece. The movable piece has a second latching protrusion that inserts into the second opening. The lock block is one of a cylinder, a sphere, a hemisphere, or a cone. When locked, the movable piece slides to the locked position, the second latch is inserted into the unlocking channel through the second opening and presses against the lock block to restrict the movement of the lock block. The lock block is fixed and blocks the first opening. The first latch of the lock hook abuts against the outer peripheral side of the lock block, so that the button, lock hook and lock block abut against each other in sequence to achieve locking. When unlocking, the movable piece slides to the unlock position, the second latch can slide along the second opening and disengage from the unlocking channel, the lock block can slide relative to the lock case, the button is pressed and the lock hook is driven to slide toward the first opening, the first latch abuts against the lock block so that the lock block slides along the unlocking channel, thereby unlocking.

2. The combination lock for bags according to claim 1, characterized in that: The lock housing also includes a lock cylinder, which is rotatably installed inside the lock housing. The unlocking channel has a third opening on the side facing the lock cylinder, and the lock cylinder extends a third latch into the third opening. When locked, the lock cylinder rotates to the locked position, and the third latch is inserted into the unlocking channel through the third opening and presses against the lock block to achieve locking; When unlocking, the lock cylinder rotates to the unlock position, and the third latch protrusion disengages from the unlocking channel through the third opening, so that the lock block can slide along the unlocking channel to achieve unlocking.

3. A combination lock for bags according to claim 1, characterized in that: The cipher wheel assembly also includes a cipher wheel, a code-switching wheel, and a code-switching chip; The combination wheel is rotatably mounted inside the lock housing, the code adjustment wheel is held below the combination wheel, and a code adjustment spring is provided between the code adjustment wheel and its corresponding combination wheel; The outer peripheral side of the code wheel is provided with a first slot. The movable piece is installed below the code wheel and has a mounting hole for the code wheel to pass through. The wall of the mounting hole extends toward the first slot to form an unlocking part. When locked, the unlocking part abuts against the outer peripheral side of the code wheel and the first slot is misaligned with the unlocking part. When unlocked, the unlocking part is inserted into the first slot. The switching plate is installed below the movable plate and can slide along the lock housing. The switching plate has a switching groove and a limiting groove communicating with the switching groove. The switching groove and the limiting groove are spaced apart in the height direction and staggered in the horizontal direction. When the code switching chip is in the non-code switching position, the code switching wheel is located in the limiting groove, the code wheel and the code switching wheel are in a locked state, and the code switching spring is in a compressed state; When the code switching chip is in the code switching position, the code switching wheel is located in the code switching groove, and the code switching spring is in the extended state, driving the code wheel to separate from the code switching wheel in the height direction.

4. A combination lock for bags according to claim 3, characterized in that: The outer peripheral side of the adjustment wheel is also provided with a second slot that is opposite to the first slot. The groove wall of the adjustment groove extends upward to form a limiting part, and the limiting part is disposed opposite to the limiting groove; When the switching chip is in the switching position, the limiting part is inserted into the second slot.

5. A combination lock for bags according to claim 3, characterized in that: The bottom surface of the switching chip has two limiting grooves arranged at intervals along the sliding direction of the switching chip. The inner bottom surface of the lock case extends upward with a protrusion. When the switching chip is in the non-switching position, the protrusion is placed in one of the limiting grooves. When the switching chip is in the switching position, the protrusion is placed in the other limiting groove.

6. A combination lock for bags according to claim 5, characterized in that: The outer bottom surface of the lock case has a deformation groove that is opposite to the protrusion.

7. A combination lock for bags according to claim 3, characterized in that: The movable piece extends toward the code-switching piece to form a retaining part, and the code-switching piece has a retaining slot for the retaining part to be inserted; In the locked state, the retaining part abuts against the groove wall of the retaining groove to restrict the sliding of the code chip; In the unlocked state, the retaining part separates from the retaining groove along the sliding direction of the code chip.

8. A combination lock for bags according to claim 1, characterized in that: The movable piece extends toward the second opening to form a second latching protrusion that is inserted into the second opening. The second latching protrusion and the movable piece are configured as an integral structure. When unlocking, the movable piece slides to the unlocking position, and the second latching protrusion disengages from the unlocking channel through the second opening.

9. A combination lock for bags according to claim 1, characterized in that: The second locking protrusion and the movable piece are separate structures. The movable piece has a groove on the side facing the second opening. One side of the second locking protrusion is placed in the groove. The second locking protrusion can slide along the groove. A thrust spring is provided between the second locking protrusion and the groove wall to drive the second locking protrusion to slide in the locking direction.

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