Lock with password retrieving function

Abstract

The utility model relates to the technical field of locksets, and discloses a lockset with a password retrieving function, which comprises a lock shell, a password retrieving device, a password retrieving device, a password retrieving device and a password retrieving device, the key lock cylinder is arranged on the lock shell and can lock the lock catch; the coded lock module is arranged on the lock shell and can lock the lock catch; the coded lock module comprises a plurality of code wheels which are arranged in sequence, and each code wheel is provided with a positioning bulge; the number searching support is arranged in the lock shell, and the key lock cylinder can drive the number searching support to move horizontally; wherein a plurality of groups of elastic buckles are arranged on the number searching bracket, and the plurality of groups of elastic buckles are in one-to-one correspondence with the plurality of password wheels; each group of elastic buckles comprises a first elastic buckle and a second elastic buckle which are oppositely arranged, and a clamping groove is formed between the first elastic buckle and the second elastic buckle; and when the password wheel is shifted to a correct password position, the positioning bulge is clamped into the clamping groove. The password lock has the advantages of being high in password finding efficiency, good in effect, simple in structure and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, and in particular to a lock with a password retrieving function. Background Art

[0002] Combination locks are often used in drawers, cabinet doors, and box doors. In order to prevent the combination lock from being opened when the password is forgotten, the combination lock is generally equipped with a key lock cylinder. The combination lock can also be opened by inserting a mechanical key into the key lock cylinder. In addition, the user can retrieve the correct password with the mechanical key.

[0003] In the existing password lock with password retrieval function, a key is inserted into the key lock core, so that the key lock core drives the movable guide plate to slide horizontally, and the inclined surface on the movable guide plate pushes the metal sheet, so that the metal sheet (number-finding sheet) moves upward and approaches the password wheel. When the password wheel rotates to the correct password, the card block on the password wheel will be stuck in the card slot on the metal sheet (number-finding sheet), and the user knows that this is the correct password, so the correct password of each password wheel can be found. However, in the existing structure, the stability of the password-finding structure is poor, which affects the password-finding, and the structure is relatively complicated. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a lock with a password retrieval function which has a simple structure and good structural stability.

[0005] The technical solution adopted by the utility model to solve the technical problem is to provide a lock with a password retrieval function, comprising:

[0006] A lock housing having a knob disposed thereon, and a lock catch that can be driven by the knob to move between a locked position and an unlocked position;

[0007] A key lock cylinder, arranged on the lock housing, capable of locking the lock catch;

[0008] A password lock module is arranged on the lock shell and can lock the lock buckle; the password lock module includes a plurality of password wheels arranged in sequence, and a positioning protrusion is provided on the password wheel;

[0009] A number-finding bracket is arranged in the lock shell, and the key lock core can drive the number-finding bracket to move horizontally; wherein, the number-finding bracket is provided with a plurality of groups of elastic buckles, and the plurality of groups of elastic buckles correspond one-to-one to the plurality of password wheels; each group of the elastic buckles includes a first elastic buckle and a second elastic buckle that are arranged opposite to each other, and a card slot is formed between the first elastic buckle and the second elastic buckle; when the password wheel is turned to the correct password position, the positioning protrusion is snapped into the card slot.

[0010] Furthermore, when the password wheel is turned to the correct password position, the positioning protrusion is inserted into the card slot, and the first elastic buckle and the second elastic buckle on both sides of the positioning protrusion limit the positioning protrusion so that the password wheel cannot continue to rotate.

[0011] Furthermore, a limiting bump is protruded upwards from one end of the first elastic buckle close to the second elastic buckle and one end of the second elastic buckle close to the first elastic buckle;

[0012] The positioning protrusion can press the limiting protrusion downward to cause the first elastic buckle or the second elastic buckle to be elastically deformed.

[0013] Furthermore, the limiting protrusion has a guide sliding inclined wall, and the positioning protrusion can be pressed against the guide sliding inclined wall and then snapped into the snapping groove.

[0014] Furthermore, the limiting protrusion has a limiting straight wall, and the limiting straight walls on the two limiting protrusions surround the clamping groove; and the two limiting straight walls can limit the positioning protrusion in the clamping groove.

[0015] Furthermore, the first elastic buckle and the second elastic buckle are both arranged in an L shape.

[0016] Furthermore, the number-finding bracket is made of plastic.

[0017] Furthermore, a push block is arranged at the key lock core, and the key lock core can drive the push block to telescopically move;

[0018] One end of the number-finding bracket movably abuts against the push block, and the other end of the number-finding bracket is provided with a plurality of return springs, one end of the return spring abuts against the number-finding bracket, and the other end of the return spring abuts against the lock housing;

[0019] When the key lock core pushes the number-finding bracket through the pushing block to make the number-finding bracket move horizontally, the return spring is compressed.

[0020] Furthermore, a guide slot is provided on the lock housing, a guide slide block is provided on the number-finding bracket, and the guide slide block is slidably disposed in the guide slot.

[0021] Furthermore, the cipher wheel comprises an inner wheel and an outer character wheel, the outer character wheel is sleeved on the inner wheel, and the positioning protrusion is located on the outer wall of the inner wheel.

[0022] Compared with the prior art, the utility model has at least the following beneficial effects:

[0023] In the utility model, the two parts with relative motion, namely, the number-finding plate and the movable guide plate in the existing lock, are made into one part (namely, the number-finding bracket), which can effectively simplify the structure of the lock, and the number-finding bracket does not need to move up and down, and has good structural stability and long service life. When it is necessary to retrieve the password by key, the key is inserted into the key lock core, so that the key lock core drives the number-finding bracket to slide horizontally, and the elastic buckle on the number-finding bracket approaches the password wheel; the password wheel is turned to find the password, and when the password wheel is rotated to the correct password, the positioning protrusion on the password wheel is inserted into the card slot between the first elastic buckle and the second elastic buckle, and the user can turn the next password wheel to find the password. In addition, the structure of the first elastic buckle and the second elastic buckle ensures that the positioning protrusion on the password wheel can squeeze the first elastic buckle and the second elastic buckle to deform them, and after being inserted into the card slot between the two, the password wheel cannot be rotated further, and the password finding effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the lock of the utility model;

[0025] Figure 2 It is the assembly drawing of the key lock cylinder, password lock module and number-finding bracket;

[0026] Figure 3 The following is a schematic diagram of the lock's decomposition;

[0027] Figure 4 It is a schematic diagram of the structure of a cipher wheel and a number-finding bracket;

[0028] Figure 5 for Figure 4 Schematic diagram of the decomposition.

[0029] In the figure:

[0030] 1. Lock;

[0031] 2. Lock housing; 20. Knob; 21. Upper housing; 22. Lower housing;

[0032] 3. Password lock module; 30. Password wheel; 31. Lock shaft; 301. Inner wheel; 302. Outer wheel; 301A. Positioning protrusion;

[0033] 4. Key lock cylinder; 40. Push block;

[0034] 5. Number-finding bracket; 50. Limiting protrusion; 501. Guide sliding inclined wall; 502. Limiting straight wall; 51. First elastic buckle; 52. Second elastic buckle; 512. Card slot; 53. Reset spring; 54. Guide sliding block. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] like Figure 1-Figure 5 As shown, a lock with a password retrieval function can be opened by the password in normal use; when the password is forgotten, the lock can be opened by a mechanical key, and the correct password can be retrieved by the mechanical key, which is convenient to use. The lock mainly includes: a lock buckle 1, a lock shell 2, a password lock module 3, a key lock cylinder 4 and a number-finding bracket 5.

[0041] The lock housing 2 includes an upper housing 21 and a lower housing 22, which are detachably connected by screws to facilitate installation of other components in the lock housing 2. A knob 20 is provided on the upper housing 21, and the knob 20 is rotatably arranged on the upper housing 21. The lock housing 2 is also provided with a lock catch 1 that can be driven by the knob 20 and moves between a locked position and an unlocked position. When the lock is applied to a cabinet door, the lock catch 1 of the lock is in the locked position, and the cabinet door can be locked on the cabinet. If the cabinet door is to be opened, the lock needs to be unlocked first, so that the lock catch 1 is switched to the unlocked position.

[0042] The key lock cylinder 4 is arranged on the lock housing 2 and can lock the lock catch 1. When the lock needs to be unlocked by a mechanical key, the mechanical key matching the key lock cylinder 4 is inserted into the key lock cylinder 4, and the lock catch 1 is unlocked, and the lock catch 1 is driven to rotate to the unlocking position. A push block 40 is arranged at the key lock cylinder 4, and the key lock cylinder 4 can push the number search bracket 5 through the push block 40, so that the number search bracket 5 slides in the horizontal direction.

[0043] The password lock module 3 is arranged on the lock shell 2, and can also lock the lock buckle 1; when it is necessary to unlock the lock by the password, the password wheel 30 is turned to the correct password, so that the password lock module 3 releases the lock buckle 1, and drives the lock buckle 1 to rotate to the unlocking position. The password lock module 3 includes a lock shaft 31 and a plurality of password wheels 30 arranged in sequence, and the password wheels 30 are all sleeved on the lock shaft 31, and a positioning protrusion 301A is provided on the password wheel 30. Specifically, the password wheel 30 of this embodiment includes an inner wheel 301 and an outer character wheel 302, and the outer character wheel 302 is sleeved on the inner wheel 301. The rotation of the outer character wheel 302 can drive the inner wheel 301 to rotate, that is, the torque can be transmitted between the two, and the positioning protrusion 301A is on the outer wall of the inner wheel 301. The other structures of the password lock module 3 are existing structures, which will not be repeated here.

[0044] The number-finding bracket 5 is arranged in the lock shell 2, and the key lock cylinder 4 can drive the number-finding bracket 5 to move horizontally. Specifically, a guide slide groove is arranged on the lower shell 22 of the lock shell 2, and guide sliders 54 are arranged on both sides of the number-finding bracket 5. The guide sliders 54 are arranged one-to-one with the guide slide grooves, and the guide sliders 54 are slidably arranged in the guide slide grooves. When the key lock cylinder 4 drives the number-finding bracket 5 to move horizontally through the push block 40, the guide sliders 54 and the guide slide groove guide the movement of the number-finding bracket 5, and the number-finding bracket 5 only needs to slide in the horizontal direction, and does not need to move up and down.

[0045] Among them, the number-finding bracket 5 is equipped with multiple groups of elastic buckles, and the multiple groups of elastic buckles correspond to multiple password wheels 30 one by one. In the drawings of this embodiment, the number of password wheels 30 is four, so there are four groups of elastic buckles, and the number can be set as needed. In addition, each group of elastic buckles includes a first elastic buckle 51 and a second elastic buckle 52 that are arranged opposite to each other, and the first elastic buckle 51 and the second elastic buckle 52 are arranged at intervals, and a card slot 512 is formed between the first elastic buckle 51 and the second elastic buckle 52; when the password wheel 30 is turned to the correct password position, the positioning protrusion 301A is inserted into the card slot 512. Furthermore, when the password wheel 30 is turned to the correct password position, the positioning protrusion 301A is inserted into the card slot 512, and the first elastic buckle 51 and the second elastic buckle 52 on both sides of the positioning protrusion 301A limit the positioning protrusion 301A, so that the password wheel 30 cannot continue to rotate, that is, when the password wheel 30 is turned to the correct password, the rotation freedom of the password wheel 30 is restricted, and this is the correct password. The password can be found quickly, the password finding efficiency is high, and there will be no situation where the locking effect is not obvious and the password finding is inconvenient.

[0046] In actual use, the present embodiment makes the two parts with relative motion, the number-finding plate and the movable guide plate, in the existing lock into one part (i.e., the number-finding bracket 5), which can effectively simplify the structure of the lock, and the number-finding bracket 5 does not need to move up and down, and has good structural stability and long service life. When it is necessary to retrieve the password by key, the key is inserted into the key lock cylinder 4, so that the key lock cylinder 4 drives the number-finding bracket 5 to slide horizontally, and the elastic buckle on the number-finding bracket 5 approaches the password wheel 30; the password wheel 30 is turned to find the password, and when the password wheel 30 is rotated to the correct password, the positioning protrusion 301A on the password wheel 30 is inserted into the card slot 512 between the first elastic buckle 51 and the second elastic buckle 52, and the user can turn the next password wheel 30 to find the password. In addition, the structure of the first elastic buckle 51 and the second elastic buckle 52 ensures that the positioning protrusion 301A on the password wheel 30 can squeeze the first elastic buckle 51 and the second elastic buckle 52 to deform them, and after being inserted into the card slot 512 between the two, the password wheel 30 cannot be rotated further, and the password finding effect is good.

[0047] Specifically, Figure 2 , Figure 4-Figure 5As shown, in this example, one end of the first elastic buckle 51 close to the second elastic buckle 52 and one end of the second elastic buckle 52 close to the first elastic buckle 51 both protrude a limiting protrusion 50 upwards. After the positioning protrusion 301A is inserted into the card slot 512, the two limiting protrusions 50 can limit the forward and reverse rotation of the password wheel 30, ensuring a good password search effect. In addition, the positioning protrusion 301A can press the limiting protrusion 50 downwards, so that the first elastic buckle 51 or the second elastic buckle 52 is elastically deformed, that is, the first elastic buckle 51 and the second elastic buckle 52 both have a certain elasticity, ensuring that the positioning protrusion 301A can squeeze the first elastic buckle 51 or the second elastic buckle 52 into the card slot 512. Among them, the number-finding bracket 5 of this embodiment is made of plastic material, and the first elastic buckle 51 and the second elastic buckle 52 are both L-shaped, which not only ensures that the first elastic buckle 51 and the second elastic buckle 52 themselves have a certain elasticity, but also ensures that they have a good limiting effect on the positioning protrusion 301A.

[0048] The limiting protrusion 50 has a guide sliding inclined wall 501, and the positioning protrusion 301A can press against the guide sliding inclined wall 501 and then snap into the card slot 512. The limiting protrusions 50 on both the first elastic buckle 51 and the second elastic buckle 52 are at the end position, and the guide sliding inclined wall 501 on both the limiting protrusions 50 is at the side away from the card slot 512. When the password wheel 30 is turned to approach the correct password, the positioning protrusion 301A first presses against the guide sliding inclined wall 501, presses down the elastic buckle, and finally snaps into the card slot 512 to find the correct password. The setting of the guide sliding inclined wall 501 makes the deformation of the first elastic buckle 51 or the second elastic buckle 52 have a gradual process, and ensures that the positioning protrusion 301A snaps in smoothly. In addition, a limiting straight wall 502 is provided on the limiting protrusion 50. The limiting straight walls 502 on the two limiting protrusions 50 form a card slot 512, and the two limiting straight walls 502 can limit the positioning protrusion 301A in the card slot 512, ensuring a good effect of finding the correct password.

[0049] A push block 40 is arranged at the key lock core 4, and the key lock core 4 can drive the push block 40 to telescopic movement. One end of the number-finding bracket 5 is movably opposed to the push block 40, and the other end of the number-finding bracket 5 is provided with two reset springs 53, one end of the reset spring 53 is against the number-finding bracket 5, and the other end of the reset spring 53 is against the lock shell 2. During use, when the key lock core 4 pushes the number-finding bracket 5 through the push block 40 to make the number-finding bracket 5 move horizontally, the reset spring 53 is compressed, and the reset spring 53 is used to reset the number-finding bracket 5. Under normal use of the lock, there is no need to perform the password-finding action. The reset spring 53 is against the number-finding bracket 5 to ensure that the elastic buckle will not approach the positioning protrusion 301A, and the positioning protrusion 301A will not be stuck in the card slot 512, and the password wheel 30 can be freely turned.

[0050] During use, when the user forgets the password and needs to retrieve the correct password: insert the key lock cylinder 4 through the mechanical key of the lock, and turn the key lock cylinder 4, the key lock cylinder 4 drives the push block to extend outward. The push block pushes the number search bracket 5, so that the number search bracket 5 moves horizontally, and then the elastic buckle approaches the corresponding password wheel 30. The outer character wheel 302 in the password wheel 30 is turned to drive the inner wheel 301 to rotate. When the password on the outer character wheel 302 is the correct password, the positioning protrusion 301A on the inner wheel 301 is inserted into the card slot 512, and the positioning protrusion 301A is limited by the limiting protrusions 50 of the two elastic buckles, and the password wheel 30 cannot continue to rotate, which is the correct password at this time. Turn the password wheel 30 in turn to retrieve the correct passwords one by one. The efficiency and effect of the password are high, and the overall structure is simple and the service life is long.

Claims

1. A lock with a password retrieval function, the unique feature of which is that it includes: A lock housing having a knob disposed thereon, and a lock catch that can be driven by the knob to move between a locked position and an unlocked position; A key lock cylinder, arranged on the lock housing, capable of locking the lock catch; A password lock module is arranged on the lock shell and can lock the lock buckle; the password lock module includes a plurality of password wheels arranged in sequence, and a positioning protrusion is provided on the password wheel; A number-finding bracket is arranged in the lock shell, and the key lock core can drive the number-finding bracket to move horizontally; wherein, the number-finding bracket is provided with a plurality of groups of elastic buckles, and the plurality of groups of elastic buckles correspond one-to-one to the plurality of password wheels; each group of the elastic buckles includes a first elastic buckle and a second elastic buckle that are arranged opposite to each other, and a card slot is formed between the first elastic buckle and the second elastic buckle; when the password wheel is turned to the correct password position, the positioning protrusion is snapped into the card slot.

2. The lock with password retrieval function according to claim 1, characterized in that: When the code wheel is turned to the correct code position, the positioning protrusion is inserted into the card slot, and the first elastic buckle and the second elastic buckle on both sides of the positioning protrusion limit the positioning protrusion so that the code wheel cannot continue to rotate.

3. The lock with password retrieval function according to claim 1, characterized in that: One end of the first elastic buckle close to the second elastic buckle and one end of the second elastic buckle close to the first elastic buckle both protrude upwards with a limiting protrusion; The positioning protrusion can press the limiting protrusion downward to cause the first elastic buckle or the second elastic buckle to be elastically deformed.

4. The lock with password retrieval function according to claim 3, characterized in that: The limiting protrusion is provided with a guide sliding inclined wall, and the positioning protrusion can be pressed against the guide sliding inclined wall and then snapped into the snapping groove.

5. The lock with password retrieval function according to claim 3 or 4, characterized in that: The limiting protrusion is provided with a limiting straight wall, and the limiting straight walls on the two limiting protrusions surround the clamping groove; and the two limiting straight walls can limit the positioning protrusion in the clamping groove.

6. The lock with password retrieval function according to claim 1, characterized in that: The first elastic buckle and the second elastic buckle are both arranged in an L shape.

7. The lock with password retrieval function according to claim 1, characterized in that: The number-finding bracket is made of plastic.

8. The lock with password retrieval function according to claim 1, characterized in that: The key lock core is provided with a push block, and the key lock core can drive the push block to telescopic movement; One end of the number-finding bracket movably abuts against the push block, and the other end of the number-finding bracket is provided with a plurality of return springs, one end of the return spring abuts against the number-finding bracket, and the other end of the return spring abuts against the lock housing; When the key lock core pushes the number-finding bracket through the pushing block to make the number-finding bracket move horizontally, the return spring is compressed.

9. The lock with password retrieval function according to claim 1 or 8, characterized in that: The lock housing is provided with a guide slide groove, the number-finding bracket is provided with a guide slide block, and the guide slide block is slidably arranged in the guide slide groove.

10. The lock with password retrieval function according to claim 1, characterized in that: The cipher wheel comprises an inner wheel and an outer character wheel, the outer character wheel is sleeved on the inner wheel, and the positioning protrusion is located on the outer wall of the inner wheel.

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