Coded lock with passwords capable of being retrieved

Abstract

The utility model relates to a coded lock capable of retrieving a password, which effectively solves the problem that the password of the existing coded lock cannot be retrieved after the password is forgotten. Comprising a rectangular bottom shell, an upper top shell is arranged at the upper end of the bottom shell, a lock cylinder is arranged on the left side in the bottom shell, the upper end of the lock cylinder penetrates through the upper top shell and is coaxially provided with a rotary knob, the left end of a moving block is provided with a top block capable of being inserted into a groove, and the outer surface of a code wheel is provided with a plurality of numbers; a plurality of limiting plates in one-to-one correspondence with the number changing wheels are arranged in the bottom shell, passing grooves are formed in the upper ends of the limiting plates, protruding teeth capable of penetrating through the passing grooves are arranged at the lower ends of the number changing wheels, a retrieving plate is coaxially arranged at the right ends of the limiting plates, retrieving grooves are formed in the retrieving plate, and a rotating shaft located behind the code wheels and in the left-right axial direction is arranged in the bottom shell and can rotate. A plurality of elastic rods which are in one-to-one correspondence with the retrieving plates and can be inserted into the retrieving grooves are arranged on the rotating shaft; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of lock devices, in particular to a password lock capable of retrieving passwords. Background Art

[0002] Combination locks are commonly seen in daily life. They are usually used in suitcases, drawers, and places in public places that need to be locked and kept confidential. Compared with ordinary locks, combination locks have the advantage of not needing to carry keys, but existing combination locks have the following defects when used: some users often forget the password due to negligence. The combination lock will come with an administrator key when it leaves the factory, and the lock core can be directly opened by the administrator key without entering the password. However, due to forgetting the password, the password locking and password unlocking functions cannot be used after using the administrator key to open the password. It is necessary to find a professional to decipher or disassemble it to get the correct password before continuing to use it, which is inconvenient to operate. Utility Model Content

[0003] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a password-recoverable combination lock, which effectively solves the problem that the existing combination lock cannot retrieve the password after forgetting the password.

[0004] The technical solution is as follows: the utility model comprises a rectangular bottom shell, an upper top shell is arranged on the upper end of the bottom shell, a lock core is arranged on the left side of the bottom shell, the upper end of the lock core passes through the upper top shell and is coaxially provided with a knob, a pushing wheel is coaxially provided on the lock core, a groove is provided on the pushing wheel, a moving block is slidably connected in the bottom shell, a top block which can be inserted into the groove is arranged on the left end of the moving block, a moving shaft which is rotatably connected to the left and right axial directions of the moving block is coaxially slidably connected to the moving shaft, a plurality of password wheels evenly distributed along the left and right directions are coaxially slidably connected to the moving shaft, a plurality of numbers are arranged on the outer surface of the password wheel, a plurality of number-changing wheels are coaxially provided on the moving shaft, a plurality of limit plates corresponding to the number-changing wheels are arranged in the bottom shell, a through groove is arranged on the upper end of the limit plate, a convex tooth which can pass through the through groove is arranged on the lower end of the number-changing wheel, a retrieval plate is coaxially provided on the right end of the limit plate, a retrieval groove is provided on the retrieval plate, a rotating shaft located behind the password wheel and in the left and right axial directions is arranged in the bottom shell, the rotating shaft can rotate, and a plurality of elastic rods which correspond to the retrieval plates one by one and can be inserted into the retrieval groove are arranged on the rotating shaft.

[0005] Compared with the prior art, the utility model has the beneficial effects of being able to retrieve the corresponding password through the elastic rod after forgetting the password, without the need for professionals to disassemble and obtain the password, and is easy to operate and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is the main axonometric drawing of the utility model.

[0007] Figure 2 It is a full-section main axonometric drawing of the utility model.

[0008] Figure 3 It is a full-section left-view axonometric drawing of the utility model.

[0009] Figure 4 It is a full-section left-view axonometric drawing of the utility model.

[0010] Figure 5 It is a full-section top view axonometric drawing of the utility model.

[0011] Figure 6 It is an axonometric drawing of the utility model after removing the bottom shell and the upper top shell. DETAILED DESCRIPTION

[0012] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited to the basic implementation disclosed below.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figures 1 to 6The invention discloses a rectangular bottom shell 1, wherein an upper shell 2 is arranged on the upper end of the bottom shell 1, a lock core 3 is arranged on the left side of the bottom shell 1, the upper end of the lock core 3 penetrates the upper shell 2 and is coaxially provided with a knob 4, a driving wheel 5 is coaxially provided on the lock core 3, a groove 6 is provided on the driving wheel 5, a moving block 7 is slidably connected in the bottom shell 1, a top block 8 which can be inserted into the groove 6 is arranged on the left end of the moving block 7, a moving shaft 9 rotatably connected to the right end of the moving block 7 in the left and right axial directions, a plurality of password wheels 10 uniformly distributed in the left and right directions are coaxially slidably connected to the moving shaft 9, a plurality of numbers are arranged on the outer surface of the password wheel 10, and a moving block 7 is slidably connected in the bottom shell 1, a top block 8 which can be inserted into the groove 6 is arranged on the left end of the moving block 7, a moving shaft 9 rotatably connected to the right end of the moving block 7, a plurality of password wheels 10 uniformly distributed in the left and right directions are coaxially slidably connected to the moving shaft 9, a plurality of numbers are arranged on the outer surface of the password wheel 10, and a plurality of numbers are arranged on the outer surface of the password wheel 10. A plurality of number-changing wheels 11 are coaxially arranged on the shaft 9, a plurality of limit plates 12 corresponding to the number-changing wheels 11 are arranged in the bottom shell 1, a through slot 13 is provided at the upper end of the limit plate 12, a convex tooth 14 which can pass through the through slot 13 is provided at the lower end of the number-changing wheel 11, a retrieval plate 15 is coaxially arranged at the right end of the limit plate 12, a retrieval groove 16 is provided on the retrieval plate 15, a rotating shaft 17 located behind the code wheel 10 and axially to the left and right is arranged in the bottom shell 1, the rotating shaft 17 is rotatable, and a plurality of elastic rods 18 corresponding to the retrieval plates 15 and insertable into the retrieval groove 16 are provided on the rotating shaft 17.

[0016] In order to rotate the rotating shaft 17 , the rotating shaft 17 is rotatably connected to the bottom shell 1 , and a dial plate 19 hinged to the bottom shell 1 is provided at the lower end of the rotating shaft 17 .

[0017] In order to facilitate the rotation of the shifting plate 19, a hinge groove is provided on the bottom shell 1, and the shifting plate 19 can rotate in the hinge groove.

[0018] In order to facilitate the reset of the paddle plate 19 , the rear end of the paddle plate 19 is connected to the bottom shell 1 via a spring 20 .

[0019] In order to facilitate the resetting of the movable shaft 9 , a resetting cylinder 21 is coaxially arranged at the right end of the movable shaft 9 , and the resetting cylinder 21 is connected to the bottom shell 1 via a tension spring 22 .

[0020] In order to facilitate the rotation of the code wheel 10, a plurality of rotation grooves corresponding to the code wheel 10 are opened on the upper shell 2, and the upper end of the code wheel 10 extends out of the rotation groove.

[0021] In order to facilitate the rotation of the knob 4, a plurality of anti-slip strips are provided on the outer surface of the knob 4.

[0022] When the utility model is in use, it is first assumed that the operator knows the password at this time. At this time, when it is necessary to unlock the door, the plurality of password wheels 10 can be rotated to make the password wheel 10 rotate to the correct number. When it is rotated to the correct number, the password wheel 10 drives the number-changing wheel 11 to rotate, and the number-changing wheel 11 drives the convex teeth 14 thereon to rotate. After rotating to the correct password, the plurality of convex teeth 14 respectively correspond to the through grooves 13 on the corresponding limit plates 12. At this time, the knob 4 can be rotated, the knob 4 drives the lock core 3 to rotate, the lock core 3 drives the pushing wheel 5 to rotate, and the pushing wheel 5 further drives the groove 6 thereon to rotate, so that the top block 8 drives the moving block 7 to move right, and the moving block 7 drives the number-changing wheel 11 and the convex teeth 14 thereon to move right via the moving shaft 9, and the convex teeth 14 move right through the corresponding through grooves 13. At this time, the convex teeth 14 can smoothly pass through the corresponding through grooves 13, so the operator can smoothly turn the knob 4 to drive the lock core 3 to rotate, and the lock core 3 rotates to open the corresponding locking mechanism to achieve unlocking;

[0023] At the same time, when the password is correct, the dial plate 19 is pushed backward, and the dial plate 19 drives the rotating shaft 17 to rotate, thereby driving the multiple elastic rods 18 to swing forward. In this state, the elastic rods 18 can be inserted into the corresponding retrieval grooves 16. When it is necessary to lock again, the knob 4 is rotated in the opposite direction, and the knob 4 drives the grooves 6 on the pushing wheel 5 to rotate to the initial position, releasing the squeeze on the top block 8. At this time, due to the restoring force of the spring 20 to the left, the moving block 7 and the moving shaft 9 move to the left to the initial position. At the same time, the knob 4 drives the lock cylinder 3 to rotate to re-lock, and then the password wheel 10 can be messed up at this time to prevent others from peeping and remembering the password to unlock. Therefore, it is necessary to mess up the password wheel 10. After the mess is made, the password wheel 10 drives the number-changing wheel 11 and the retrieval plate 15 to rotate, so that the convex tooth 14 does not correspond to the through groove 13, and the retrieval groove 16 does not correspond to the elastic rod 18;

[0024] Assuming that the operator forgets the password at this time, when it is necessary to unlock the door, the administrator key can be inserted into the lock core 3 to unlock the door. After unlocking is completed, the dial plate 19 is pushed backward, and the dial plate 19 drives the rotating shaft 17 to rotate and stretches the spring 20 backward at the same time. The rotating shaft 17 drives the elastic rod 18 thereon to swing forward. Since the elastic rod 18 does not correspond to the corresponding retrieval groove 16 at this time, the elastic rod 18 contacts and squeezes the outer surface of the retrieval plate 15. At this time, the password wheel 10 is rotated from left to right in sequence, and the password wheel 10 drives the retrieval plate 15 to rotate, and the retrieval plate 15 drives the retrieval groove 16 thereon to rotate. When the password is rotated to the correct password, the corresponding elastic rod 18 is inserted into the corresponding retrieval groove 16. At this time, since the elastic rod 18 is inserted in the retrieval groove 16 for limiting, the retrieval plate 15 cannot be rotated, and then the corresponding password wheel 10 cannot be rotated;

[0025] At this time, the next password wheel 10 can be rotated. After the next password wheel 10 is rotated to the correct password, the corresponding elastic rod 18 is inserted into the retrieval groove 16 again, and another password is retrieved. This is repeated until all the multiple passwords are retrieved. At this time, the password can be remembered, and then the dial plate 19 is released. Due to the restoring force of the tension spring 22, the dial plate 19 is driven to swing backward, and then the elastic rod 18 is driven by the rotating shaft 17 to swing backward and be pulled out from the corresponding retrieval groove 16. At this time, the password function can be used again.

[0026] Compared with the prior art, the utility model has the following beneficial effects: the movable shaft, elastic rod, retrieval plate, retrieval groove, etc. can be used to retrieve the corresponding password through the elastic rod after the password is forgotten, and no professional is required to disassemble and obtain the password. The operation is simple and time-saving and labor-saving. The structure is simple, the conception is novel, the use is convenient, and the practicability is strong.

[0027] It should be pointed out that, according to the needs of implementation, the various components described in the embodiments of the present utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present utility model.

[0028] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A password-recoverable combination lock, comprising a rectangular bottom shell (1), characterized in that: An upper top shell (2) is provided at the upper end of the bottom shell (1), a lock core (3) is provided on the left side of the bottom shell (1), the upper end of the lock core (3) penetrates the upper top shell (2) and is coaxially provided with a knob (4), a driving wheel (5) is coaxially provided on the lock core (3), a groove (6) is provided on the driving wheel (5), a moving block (7) is slidably connected in the bottom shell (1), a top block (8) which can be inserted into the groove (6) is provided at the left end of the moving block (7), a moving shaft (9) is rotatably connected to the right end of the moving block (7), a plurality of password wheels (10) uniformly distributed in the left and right directions are coaxially slidably connected to the moving shaft (9), a plurality of numbers are provided on the outer surface of the password wheel (10), and a plurality of numbers are coaxially provided on the moving shaft (9). A plurality of number-changing wheels (11) are provided, a plurality of limit plates (12) corresponding to the number-changing wheels (11) are provided in the bottom shell (1), a through groove (13) is provided at the upper end of the limit plate (12), a convex tooth (14) capable of passing through the through groove (13) is provided at the lower end of the number-changing wheel (11), a retrieval plate (15) is coaxially provided at the right end of the limit plate (12), a retrieval groove (16) is provided on the retrieval plate (15), a rotating shaft (17) is provided in the bottom shell (1) and is located behind the code wheel (10) and in the left and right axial direction, the rotating shaft (17) is rotatable, and a plurality of elastic rods (18) corresponding to the retrieval plates (15) and capable of being inserted into the retrieval groove (16) are provided on the rotating shaft (17).

2. A password-recoverable combination lock according to claim 1, characterized in that: The rotating shaft (17) is rotatably connected to the bottom shell (1), and a shift plate (19) hinged to the bottom shell (1) is provided at the lower end of the rotating shaft (17).

3. A password-recoverable combination lock according to claim 1, characterized in that: The bottom shell (1) is provided with a hinge groove, and the shift plate (19) can rotate in the hinge groove.

4. A password-recoverable combination lock according to claim 2, characterized in that: The rear end of the shift plate (19) is connected to the bottom shell (1) via a spring (20).

5. A password-recoverable combination lock according to claim 1, characterized in that: A reset cylinder (21) is coaxially arranged at the right end of the movable shaft (9), and the reset cylinder (21) is connected to the bottom shell (1) via a tension spring (22).

6. A password-recoverable combination lock according to claim 1, characterized in that: The upper shell (2) is provided with a plurality of rotation grooves corresponding to the code wheels (10) one by one, and the upper ends of the code wheels (10) extend out of the rotation grooves.

7. A password-recoverable combination lock according to claim 1, characterized in that: A plurality of anti-slip strips are provided on the outer surface of the knob (4).

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