Coded lock stable to assemble

Abstract

The invention relates to the technical field of coded locks, in particular to a coded lock stable in assembly, which comprises a lock shell, a pushing part capable of being mounted on the lock shell in a left-right sliding manner, and a code assembly used for limiting the pushing part to move, the lock shell is provided with two groups of lock hooks, a transmission module is arranged between the pushing part and the two groups of lock hooks, and the pushing part unlocks the lock hooks on the corresponding sides through the transmission module. The code assembly comprises a core rod, a plurality of digital wheels and a plurality of code adjusting wheels, and the core rod and the pushing mechanism are fixed and synchronously slide left and right; a stop structure is arranged between the lock shell and the code adjusting wheel so as to limit axial movement of the code adjusting wheel when the code is wrong, displacement of the pushing component, the code adjusting wheel and the core rod is mutually restrained to lock, and the stop structure relieves axial limitation of the code adjusting wheel when the code is correct. Compared with the prior art, under the condition that the two sets of lock hooks are driven to be unlocked based on left-right sliding of the pushing device, the structure is simplified, the manufacturing difficulty and cost are reduced, movement of the code adjusting wheel is limited through the structure of the lock shell in the locking state, the structure is stable, and the safety performance is high.

Description

Technical Field

[0001] The invention relates to the technical field of password locks, and in particular to a password lock with stable assembly. Background Art

[0002] In travel bags, there are usually combination locks. Some are conventional combination locks, while others are TSA-certified customs locks that have both key lock components and combination lock components and are easy to pass through customs. The combination lock is mainly composed of a core rod, a coding wheel, a digital wheel, and a lock mechanism. The coding wheel is sleeved outside the core rod, and the code wheel is sleeved outside the coding wheel. The main part of the core rod is a non-circular cross-section, and the sleeve hole of the coding wheel is also set to a non-circular hole that matches the shape of the former, while the section of the core rod that is facing the coding wheel in the normal state is set to a circular cross-section that allows the coding wheel to rotate freely. Under normal conditions, the code wheel and the code wheel rotate synchronously. The code wheel rotates at the same time as the code wheel. When the code wheel is rotated to the correct code, the hole of the code wheel just rotates to match the shape of the core rod, that is, there is no interference between the code wheel and the core rod in the axial direction. At this time, the core rod can be pushed to move, thereby unlocking the lock controlled by the core rod, and the code lock is in the unlocked state; when the digital wheel is an incorrect code, the hole of the code wheel is turned to be circumferentially staggered with the shape of the core rod, that is, the code wheel and the core rod form an interference block in the axial direction. At this time, the core rod cannot be pushed, the lock machine is locked, and the code lock is in the locked state. When the password needs to be reset, in the unlocked state, move the code wheel to separate the code wheel from the digital wheel. At this time, the digital wheel can rotate freely. After the digital wheel is rotated to the set password, release the code wheel, the code wheel moves in the opposite direction to reset, and re-engages and synchronizes with the digital wheel, and the code lock is in normal use.

[0003] The non-circular cross section between the core rod and the encoder wheel may also be a concave-convex embedded structure, that is, the protrusions and the grooves are aligned and give way, so that the core rod can move axially relative to the encoder wheel.

[0004] For example, the combination lock disclosed in the Chinese patent document with the announcement number CN208236166U includes a core rod, a coding wheel sleeved outside the core rod, a digital wheel sleeved outside the coding wheel, a lock machine slide controlled by the core rod, a first spring arranged between the core rod and the coding wheel to keep the coding wheel in a locking position, and a second spring to keep the lock machine slide in a locked position.

[0005] Another example is a mechanical combination lock disclosed in Chinese patent document with announcement number CN203441211U, in which a code adjustment block, a code adjustment wheel and a reset spring are sequentially sleeved on the outer side of the axle along the axis, and a push plate is provided on the axle, and the two ends of the reset spring respectively press against the code adjustment wheel and the push plate.

[0006] Such password locks rely on the spring outside the core rod to limit the code wheel. When the password is incorrect, the code wheel and the core rod are axially abutted and fixed, which can be regarded as a whole. Therefore, this structure is only applicable to locks with single-sided unlocking, that is, the lock shell can only have a set of lock hooks, and the core rod moves in a single direction to unlock, and locking cannot be achieved in the other direction.

[0007] For password locks with two sets of lock hooks on the lock shell, the two sets of lock hooks are respectively located on both sides of the pusher. Since the pusher connected to the core rod needs to move left and right to unlock (generally, moving in which direction corresponds to unlocking the lock hook on the corresponding side), the password component needs to limit and lock both the left and right sides of the pusher. The traditional one-way locking structure between the core rod and the code wheel is not applicable to this kind of lock with double sets of lock hooks.

[0008] For password locks with two sets of lock hooks, the prior art often uses a lifting plate under the password wheel to limit and lock the pusher in both directions. Such a structure is relatively complex and costly.

[0009] In response to the above problems, after proposing an innovative concept, the R & D personnel of this application searched and found that the Chinese patent application document with the publication number CN118547946A discloses a multi-layer luggage lock with a front and rear push button double switch, including an upper lock body. The upper lock body includes a housing, and a wheel shaft for passing through the password wheel and cooperating with the password wheel for locking is provided inside the housing. On one side of the wheel shaft, there is a push button for unlocking the first external locking device and the second external locking device. When the password is correct, the push button realizes the unlocking of the first external locking device by pulling backward through the cooperation of the linkage and the cooperation wheel, and the push button realizes the unlocking of the second external locking device by pushing forward through the wheel shaft. A linkage cooperating with the push button is provided inside the lock body. In addition, the push button also acts on the wheel shaft, so that pushing the same push button forward and backward can form two sets of unlocking methods.

[0010] This prior art adds a complex structure such as a linkage. When the push button moves towards the first external locking device, the cooperation wheel disengages from the password wheel through the cooperation of the convex block to unlock the first external locking device. When the convex block moves, all the cooperation wheels (i.e., the code wheels, also called inner sleeves) disengage from the password wheel. It can be seen that its transmission method is also relatively complex, with high assembly difficulty and increased manufacturing cost. Summary of the Invention

[0011] In view of the above-mentioned all or part of the technical problems existing in the prior art, the present invention provides a password lock with stable assembly.

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] Provided is a password lock with stable assembly, including a lock case, a pusher slidably installed left and right on the lock case, and a password component for restricting the movement of the pusher. The lock case is provided with two groups of lock hooks, and a transmission module is arranged between the pusher and the two groups of lock hooks. During the unlocking process, when the pusher slides leftward, one group of lock hooks is driven to unlock via the transmission module, and when the pusher slides rightward, the other group of lock hooks is driven to unlock via the transmission module. Its characteristics are:

[0014] The password component includes a core rod, a plurality of digit wheels, and a plurality of code adjustment wheels. The core rod is fixed to the pusher and slides left and right synchronously. The plurality of code adjustment wheels are sleeved outside the core rod and are abutted in sequence. The plurality of digit wheels are sleeved outside the plurality of code adjustment wheels one by one. A circumferential limiting structure is arranged between the digit wheel and the code adjustment wheel so that the digit wheel and the code adjustment wheel rotate together. Only after the digit wheel rotates to the correct password can the core rod axially move relative to the code adjustment wheel.

[0015] A stop structure is arranged between the lock case and the code adjustment wheel to restrict the axial movement of the code adjustment wheel when the password is incorrect. The displacements of the pusher, the code adjustment wheel, and the core rod restrict each other and lock. When the password is correct, the stop structure releases the axial restriction of the code adjustment wheel.

[0016] Specifically, the stop structure includes a stop convex protruding inward from the lock case and a stop groove on the outer side of the segment of the code adjustment wheel extending beyond the digit wheel. When the password is incorrect, the stop convex and the stop groove are staggered, and the stop convex axially abuts against the code adjustment wheel for limiting. When the password is correct, the stop groove aligns with the stop convex to make way.

[0017] Specifically, the stop convex and the stop groove are V-shaped.

[0018] Specifically, the stop grooves are arranged on the outer sides of all the code adjustment wheels, and a plurality of the stop convexes are arranged in the lock case in one-to-one correspondence.

[0019] Specifically, the stop convex is integrally formed on the lock case.

[0020] Specifically, a return spring is arranged on the outer side of the core rod. One end of the return spring abuts against the lock case, and the other end abuts against the code adjustment wheel, so that the code adjustment wheels are kept in a state of abutting against each other in sequence and being embedded in the digit wheels.

[0021] Specifically, the circumferential limiting structure includes a positioning groove on the inner side of the digit wheel and a positioning tooth on the outer side of the code adjustment wheel. The positioning tooth is embedded in the positioning groove, so that the digit wheel and the code adjustment wheel are circumferentially fixed and rotate together while being axially separable.

[0022] Specifically, a first code adjustment block and a second code adjustment block are provided at the end of the core rod. The first code adjustment block abuts against the outermost code adjustment wheel, and the second code adjustment block abuts against the first code adjustment block via an inclined surface, and the second code adjustment block extends outside the lock case; in the state of correct password, when an external force presses the second code adjustment block, it can drive the code adjustment wheel to axially move in a perpendicular direction, so that the positioning teeth of the code adjustment wheel are disengaged from the positioning grooves of the number wheels, and after the circumferential limit is released, the number wheels can be rotated to change the code.

[0023] Specifically, a lock post is provided at the end of the core rod, and a lock groove is provided on the pusher. The lock post is embedded in the lock groove, so that the pusher and the core rod are fixed and slide synchronously left and right.

[0024] Specifically, a lock core is provided in the pusher, and an unlocking block is provided at the bottom of the lock core. After inserting the correct key, the lock core and the unlocking block can be rotated; the transmission module includes a transmission plate slidably installed in the lock case. The transmission plate is provided with a strip-shaped groove, and the strip-shaped groove is arranged perpendicular to the sliding direction of the transmission plate. The unlocking block is provided with a linkage protrusion embedded in the strip-shaped groove, and the sliding of the transmission plate can drive the lock hook to unlock.

[0025] Advantages of the present invention:

[0026] For an assembled stable password lock of the present invention, based on the situation where the pusher slides left and right respectively to drive two groups of lock hooks to unlock, a stop structure is provided between the lock case and the code adjustment wheel to limit the axial movement of the code adjustment wheel when the password is incorrect. The displacements of the pusher, the code adjustment wheel and the core rod are mutually restricted and locked. When the password is correct, the stop structure releases the axial restriction of the code adjustment wheel, and the core rod and the pusher can slide to unlock. Compared with the prior art, the structure and the transmission method are greatly simplified, the manufacturing difficulty and cost are reduced. Moreover, in the locked state, the movement of the code adjustment wheel is restricted by the structure of the lock case, indirectly restricting the movement of the pusher and the core rod, with stable structure and high safety performance. Description of the drawings

[0027] The following further illustrates the present invention by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0028] Figure 1 It is a schematic structural diagram of an assembled stable password lock in the embodiment.

[0029] Figure 2 It is an exploded view of an assembled stable password lock in the embodiment.

[0030] Figure 3 It is a cross-sectional view of an assembled stable password lock in the embodiment, with partial modules hidden.

[0031] Figure 4 For Figure 3Enlarged view of the circled position.

[0032] Figure 5 Schematic diagram of a part of the lock housing in the embodiment, mainly showing the stop convex.

[0033] Figure 6 Schematic diagram of the internal structure of a password lock with stable assembly in the embodiment.

[0034] Figure 7 Exploded view of the password component in the embodiment.

[0035] Figure 8 Cross-sectional view of the password component in the embodiment.

[0036] Reference numerals:

[0037] Lock housing 1, stop convex 11;

[0038] Pusher 2, lock groove 21;

[0039] Password component 3, core rod 31, lock post 311, ring groove 312, relief groove 313, digit wheel 32, positioning groove 321, code adjustment wheel 33, positioning tooth 331, locking projection 332, stop groove 333; First code adjustment block 34, second code adjustment block 35;

[0040] Lock hook 4;

[0041] Drive module 5, drive plate 51, strip groove 511;

[0042] Lock core 6, unlocking block 7, linkage projection 71. Detailed implementation manner

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0044] A password lock with stable assembly in this embodiment, as Figures 1 to 8As shown in the figure, it includes a strip-shaped lock case 1, a pusher 2 that can be slid left and right and is installed in the lock case 1, and a password component 3 for restricting the movement of the pusher 2. There are two groups of lock hooks 4 corresponding to the lock hole positions in the lock case 1. Each group of lock hooks 4 has two. The two groups of lock hooks 4 are respectively located on the left and right sides of the pusher 2. A transmission module 5 is provided between the pusher 2 and the two groups of lock hooks 4. During the password unlocking process, after entering the correct password, the password component 3 releases the restriction on the lock hooks 4, and an external force pushes the pusher 2 to unlock the corresponding side of the lock hooks 4 through the transmission module 5. In practice, the positions of the two groups of lock hooks 4 can be adjusted according to needs. As long as the pusher 2 slides to the left to drive one group of lock hooks 4 to unlock and slides to the right to drive the other group of lock hooks 4 to unlock, it is within the protection scope of this application. That is to say, this application is an improvement based on the situation where the pusher 2 slides left and right to drive the two groups of lock hooks 4 to unlock respectively. As for the twist, single group of lock hooks 4, and one-way push twist in the prior art, they are not comparable to this application.

[0045] In this embodiment, the password component 3 includes a core rod 31, three digit wheels 32, and three code adjustment wheels 33. A lock post 311 is provided at the end of the core rod 31. The pusher 2 is provided with a lock groove 21. The lock post 311 is embedded in the lock groove 21, so that the pusher 2 and the core rod 31 are fixed and slide synchronously left and right. The three code adjustment wheels 33 are sleeved outside the core rod 31 and are in contact with each other in sequence. The three digit wheels 32 are sleeved outside the three code adjustment wheels 33 one by one. A circumferential limiting structure is provided between the digit wheel 32 and the code adjustment wheel 33 to make the digit wheel 32 and the code adjustment wheel 33 rotate together. The circumferential limiting structure includes a positioning groove 321 on the inner side of the digit wheel 32 and a positioning tooth 331 on the outer side of the code adjustment wheel 33. The positioning tooth 331 is axially embedded in the positioning groove 321, so that the digit wheel 32 and the code adjustment wheel 33 are circumferentially fixed and rotate together while being axially separable. A locking protrusion 332 is provided on the inner side of the code adjustment wheel 33. An annular groove 312 and an axially arranged relief groove 313 are provided on the outer side of the core rod 31. The locking protrusion 332 is embedded in the annular groove 312. Only after the digit wheel 32 rotates to the correct password, the locking protrusion 332 aligns with the relief groove 313, so that the core rod 31 can axially move relative to the code adjustment wheel 33.

[0046] In this embodiment, a stop structure is provided between the lock housing 1 and the coding wheel 33 to limit the axial movement of the coding wheel 33 when the password is wrong. The displacements of the pusher 2, the coding wheel 33 and the core rod 31 are restrained and locked. When the password is correct, the stop structure releases the axial restriction of the coding wheel 33. Specifically, the stop structure includes a stop convex 11 extending inwardly from the lock housing 1 and a stop groove 333 extending outside the segment of the coding wheel 33 outside the number wheel 32; when the password is wrong, the stop convex 11 and the stop groove 333 are staggered, and the stop convex 11 axially presses against the coding wheel 33 to limit the position; when the password is correct, the stop groove 333 aligns with the stop convex 11 to give way. Specifically, the stop convex 11 and the stop groove 333 are V-shaped, which is also similar to a triangle. Of course, they can actually be changed to other shapes, mainly to enable misalignment when the password is wrong and to enable insertion and giving way when the password is correct.

[0047] Specifically, the outer side of each code wheel 33 is provided with the stop groove 333, and the lock housing 1 is provided with a plurality of stop cams 11 corresponding to each other. Specifically, the stop cams 11 are integrally formed with the lock housing 1.

[0048] In this embodiment, a return spring (not shown) is arranged on the outer side of the core rod 31, one end of the return spring abuts against the lock housing 1, and the other end abuts against the coding wheel 33, so that the coding wheel 33 remains in a state of abutting against each other and embedded in the number wheel 32.

[0049] Specifically, the end of the core rod 31 is provided with a first code adjustment block 34 and a second code adjustment block 35, the first code adjustment block 34 abuts against the code adjustment wheel 33 at the end, the second code adjustment block 35 abuts against the first code adjustment block 34 via an inclined surface, and the second code adjustment block 35 extends to the outside of the lock housing 1; when the password is correct, the second code adjustment block 35 is pressed by an external force, which can drive the code adjustment wheel 33 to move axially in a perpendicular direction, so that the positioning teeth 331 of the code adjustment wheel 33 are disengaged from the positioning grooves 321 of the number wheel 32, and the number wheel 32 is rotated after the circumferential limit is released to change the code. After the external force releases the pressing of the second code adjustment block 35, the code adjustment wheel 33 automatically resets under the action of the reset spring.

[0050] In this embodiment, a lock core 6 is provided in the pusher 2, and an unlocking block 7 is provided at the bottom of the lock core 6. After the correct key is inserted, the lock core 6 and the unlocking block 7 can be rotated; the transmission module 5 includes a transmission plate 51 slidably installed in the lock housing 1, and the transmission plate 51 has a strip groove 511, which is arranged perpendicular to the sliding direction of the transmission plate 51. The unlocking block 7 is provided with a linkage protrusion 71 embedded in the strip groove 511. Pushing the pusher 2 or rotating the lock core 6 can make the transmission plate 51 slide, and the sliding of the transmission plate 51 can drive the lock hook 4 to unlock. As for the matching relationship between the transmission plate 51 and the lock hook 4, it is the existing technology and will not be elaborated here.

[0051] It should be noted that the two groups of locking hooks 4 in this embodiment are driven to unlock through different drive plates 51 respectively. In practice, it can be changed to that the same drive plate corresponds to two groups of locking hooks, that is, when the drive plate slides in one direction, one group of locking hooks is driven to unlock while the other group of locking hooks remains locked, and vice versa. Specifically, it can be realized through the inclined plane direction on the drive plate.

[0052] In the description of the present invention, obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A password lock with stable assembly, comprising a lock housing (1), a pusher (2) slidably mounted on the lock housing (1) left and right, and a password component (3) for restricting the movement of the pusher (2). The lock housing (1) is provided with two groups of lock hooks (4). A transmission module (5) is arranged between the pusher (2) and the two groups of lock hooks (4). During the unlocking process, when the pusher (2) slides leftward, it drives one group of lock hooks (4) to unlock via the transmission module (5). When the pusher (2) slides rightward, it drives the other group of lock hooks (4) to unlock via the transmission module (5). Its characteristics are: The password component (3) includes a core rod (31), a plurality of digit wheels (32) and a plurality of code wheels (33). The core rod (31) is fixed to the pusher (2) and slides synchronously left and right. The plurality of code wheels (33) are sleeved outside the core rod (31) and are abutted in sequence. The plurality of digit wheels (32) are sleeved outside the plurality of code wheels (33) one by one. A circumferential limiting structure is arranged between the digit wheel (32) and the code wheel (33) so that the digit wheel (32) and the code wheel (33) rotate together. Only after the digit wheel (32) is turned to the correct password can the core rod (31) axially move relative to the code wheel (33); A stop structure is arranged between the lock housing (1) and the code wheel (33) to limit the axial movement of the code wheel (33) when the password is incorrect. The displacements of the pusher (2), the code wheel (33) and the core rod (31) restrict each other and lock. When the password is correct, the stop structure releases the axial restriction of the code wheel (33).

2. The assembled stable password lock according to claim 1, characterized in that: The stop structure includes a stop convex (11) extending inward from the lock housing (1) and a stop groove (333) on the outer side of the segment of the code wheel (33) extending beyond the digit wheel (32). When the password is incorrect, the stop convex (11) and the stop groove (333) are staggered, and the stop convex (11) axially abuts against the code wheel (33) for limiting. When the password is correct, the stop groove (333) aligns with the stop convex (11) to make way.

3. The combination lock with stable assembly according to claim 2, characterized in that: The stop convex (11) and the stop groove (333) are V-shaped.

4. The assembled stable password lock according to claim 2, characterized in that: The stop groove (333) is provided on the outer side of each code wheel (33), and a plurality of the stop convexes (11) are provided in the lock housing (1) one by one corresponding to them.

5. The combination lock with stable assembly according to claim 2, characterized in that: The stop convex (11) is integrally formed on the lock housing (1).

6. The combination lock with stable assembly according to claim 1, characterized in that: A return spring is arranged on the outer side of the core rod (31). One end of the return spring abuts against the lock housing (1), and the other end abuts against the code wheel (33), so that the code wheels (33) are kept in a state of abutting against each other in sequence and being embedded in the digit wheels (32).

7. The assembled stable password lock according to claim 6, characterized in that: The circumferential limiting structure includes a positioning groove (321) on the inner side of the digit wheel (32) and a positioning tooth (331) on the outer side of the code wheel (33). The positioning tooth (331) is embedded in the positioning groove (321), so that the digit wheel (32) and the code wheel (33) are circumferentially fixed and rotate together while being axially separable.

8. The assembled stable password lock according to claim 7, characterized in that: A first code adjustment block (34) and a second code adjustment block (35) are provided at the end of the core rod (31); the first code adjustment block (34) abuts against the code adjustment wheel (33) at the end, and the second code adjustment block (35) abuts against the first code adjustment block (34) via an inclined surface, and the second code adjustment block (35) extends to the outside of the lock housing (1); when the password is correct, the second code adjustment block (35) is pressed by an external force, which can drive the code adjustment wheel (33) to move axially in a perpendicular direction, so that the positioning teeth (331) of the code adjustment wheel (33) are separated from the positioning grooves (321) of the number wheel (32), and the number wheel (32) is rotated after the circumferential limit is released to change the code.

9. The assembled stable password lock according to claim 1, characterized in that: The end of the core rod (31) is provided with a locking column (311), and the push rod (2) is provided with a locking groove (21). The locking column (311) is embedded in the locking groove (21), so that the push rod (2) and the core rod (31) are fixed and slide synchronously left and right.

10. The assembled stable password lock according to claim 1, characterized in that: A lock core (6) is arranged in the push mechanism (2), and an unlocking block (7) is arranged at the bottom of the lock core (6). After the correct key is inserted, the lock core (6) and the unlocking block (7) can be rotated; the transmission module (5) comprises a transmission plate (51) slidably installed in the lock housing (1), the transmission plate (51) is provided with a strip groove (511), and the strip groove (511) is arranged perpendicular to the sliding direction of the transmission plate (51), and the unlocking block (7) is provided with a linkage protrusion (71) embedded in the strip groove (511), and the transmission plate (51) can slide to drive the lock hook (4) to unlock.

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