Password padlock

Abstract

The utility model discloses a coded padlock which comprises a lock body and a lock hook, and a lock groove is formed in the lock hook. The lock bolt is transversely arranged on the lock body in a sliding mode, and the lock bolt is clamped into the lock groove of the lock hook in a locking state; the locking assembly is linked with the lock bolt and comprises a lock tongue, an elastic reset piece and at least two groups of code units; each group of password units is provided with a slot; the lock tongue vertically slides on the lock body; the elastic reset piece acts on the spring bolt to drive the spring bolt to keep an upward moving reset state; the spring bolt is provided with inserting blocks corresponding to the code units in number. When the code is correct, the slot of the code unit is aligned with the insertion block of the spring bolt, the lock hook can be pulled out outwards and press the spring bolt downwards to overcome the elastic force of the elastic reset piece, the insertion block enters the slot, and the lock bolt is separated from the lock slot for unlocking; when the code is wrong, the outer wall of at least one code unit abuts against the inserting block of the spring bolt to limit the spring bolt to move downwards and limit the lock bolt to be separated from the lock groove. According to the utility model, unlocking is realized without a key, the unlocking mode is more flexible, and password changing operation can be carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a password padlock. Background Art

[0002] Padlocks are the oldest and largest family in the world of locks. It can be said that other locks have evolved and derived from this category of padlocks. A metal stem in a ring shape or "one" shape that can be buckled is installed on the lock body of the padlock, that is, the "lock beam", so that the padlock is directly buckled with the lock body through the lock beam to form a closed lock.

[0003] The padlock disclosed in the Chinese utility model patent CN215803887U adopts a locking mechanism in which a key drives a lock core to rotate: the lock core presses against a lock bolt through a rotating seat and the lock bolt is caught in a lock hook slot. Although this solution improves the anti-violent opening performance through a hard metal reinforcement, it still has the following inherent defects: a physical key must be carried to operate, and losing or forgetting the key will result in inability to unlock. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a password padlock.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A password padlock includes a lock body and a lock hook, and a lock slot is arranged on the lock hook; a lock bolt that slides horizontally on the lock body, and in the locked state, the lock bolt is caught in the lock slot of the lock hook; a locking component linked with the lock bolt, the locking component includes a lock tongue, an elastic resetting member and at least two groups of password units; each group of password units is rotatably installed on the lock body and is provided with a slot; the lock tongue slides vertically on the lock body, and its sliding direction is the same as the opening direction of the lock hook; the elastic resetting member acts on the lock tongue to drive the lock tongue to maintain the upward reset state; the lock tongue has inserts corresponding to the number of password units; when the password is correct, the slots of all password units are aligned with the inserts of the lock tongue, the lock hook can be pulled outwards and pressed down the lock tongue to overcome the elastic force of the elastic resetting member, so that the inserts enter the slots, and the lock bolt is disengaged from the lock slot to unlock; when the password is incorrect, the outer wall of at least one password unit abuts against the insert of the lock tongue, restricting the downward movement of the lock tongue and the disengagement of the lock bolt from the lock slot.

[0006] As a preferred technical solution of the utility model, the password unit includes a password wheel and a rotating wheel; the password wheel is sleeved outside the rotating wheel; the password wheel is rotatably installed in the limit slot of the lock body, and at least part of the password wheel is exposed; the slot is arranged on the rotating wheel.

[0007] As a preferred technical solution of the present utility model, a plurality of rotating wheels are linked and can move horizontally synchronously, and the rotating wheels are rotationally matched with each other; a driving convex part is arranged on one arm of the lock hook, and its position corresponds to the password unit; a compression spring is arranged at one end of the lock body far away from the driving convex part, and the compression spring abuts against the end rotating wheel; the rotating wheel has a password locking position and a password changing position; Password locking position: The rotating wheel meshes with the password wheel to achieve synchronous rotation; Password changing position: The driving convex part pushes the rotating wheel to compress the compression spring, the rotating wheel disengages from the password wheel, and the password wheel can rotate independently.

[0008] As a preferred technical solution of the present utility model, the driving convex part includes a pushing surface and a clearance surface. When the compression spring is in the extended state, the clearance surface of the driving convex part has no contact with the rotating wheel, and the rotating wheel meshes with the password wheel for synchronous rotation; after the lock hook rotates and presses down in the unlocked state, the pushing surface of the driving convex part presses against the rotating wheel, and the compression spring stores energy and the rotating wheel disengages from the password wheel.

[0009] As a preferred technical solution of the present utility model, a plurality of rotating wheels are combined by passing through a connecting rod, and both ends of the connecting rod are fixed by circlips; one end of the connecting rod extends to the driving convex part.

[0010] As a preferred technical solution of the present utility model, a plurality of positioning blocks are arranged at intervals along the circumferential direction on the outer wall of the rotating wheel, and positioning grooves corresponding to the positioning blocks in number are arranged on the password wheel; when the rotating wheel is in the password locking position, the positioning blocks are in alignment and cooperation with the positioning grooves of the password wheel; when the rotating wheel is in the password changing position, the positioning blocks disengage from the positioning grooves.

[0011] As a preferred technical solution of the present utility model, two lock bolts are provided, which are respectively located on both sides of the lock tongue; the lock hook includes two arms with different lengths, and lock grooves are respectively arranged on the inner sides of the two arms at the corresponding positions of the lock bolts; the driving convex part is arranged at the lower end of the long arm; the lock bolt is horizontally arranged in a cylindrical shape; the lock groove is arranged as an arc-shaped groove; a sliding groove for the lock bolt to slide is arranged horizontally on the lock body.

[0012] As a preferred technical solution of the present utility model, the lock body includes a sheath and a lock shell fixed in the sheath, and a plurality of the limiting grooves are arranged at intervals at the bottom of one end of the lock shell far away from the lock bolt; a plurality of movable grooves corresponding to the limiting grooves are arranged at intervals on the side wall of the lock shell; a dial is fixedly connected to the side wall of the lock shell, the dial has a plurality of dial rods extending into the movable grooves, and each dial rod is respectively placed on the corresponding password wheel to provide rotational damping.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. Keyless operation is achieved through at least two sets of password units, eliminating key dependence. When the password is wrong, the outer wall of the password unit directly abuts against the lock tongue plug block to form a mechanical hard block, and the lock bolt cannot be separated from the lock slot; when the password is correct, the lock tongue plug block can enter the slot, and the lock bolt is separated from the lock slot to achieve unlocking, and the unlocking method is more flexible.

[0015] 2. Password change operation: Under the correct password, pull out the lock hook and rotate it 180 degrees. At this time, the pushing surface of the driving convex part corresponds to the connecting rod. Pressing it down again can drive multiple rotating wheels to move horizontally synchronously, and release the linkage state with multiple password wheels. The user can rotate the password wheel to change the password. After the password change is completed, pull the lock hook upwards. The multiple rotating wheels are reset under the action of the compression spring and engage with their respective password wheels. At this time, the password change operation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model without the sheath;

[0019] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of multiple groups of password units and paddles in the utility model;

[0021] Figure 6 It is a structural schematic diagram of a combination of multiple groups of password units in the utility model;

[0022] Figure 7 It is a cross-sectional view of AA of the utility model;

[0023] Figure 8 It is a schematic diagram of the structure of the password unit in the utility model;

[0024] Figure 9 It is a structural schematic diagram of the rotating wheel in the utility model;

[0025] Figure 10 It is a schematic diagram of the structure of the cipher wheel in the utility model;

[0026] Figure 11 It is a structural schematic diagram of the locking hook in the utility model.

[0027] Reference numerals: 1, lock body; 2, lock hook; 3, lock groove; 4, lock bolt; 5, lock tongue; 6, elastic reset member; 7, password unit; 8, slot; 9, insertion block; 10, password wheel; 11, rotating wheel; 12, limiting groove; 13, driving protrusion; 14, compression spring; 15, pushing surface; 16, clearance surface; 17, connecting rod; 18, snap ring; 19, positioning block; 20, positioning groove; 21, support arm; 22, lock housing; 23, sheath; 24, movable groove; 25, dial; 26, lever. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present utility model.

[0029] The specific embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0030] As Figures 1 to 11 shown, a password padlock includes a lock body 1 and a lock hook 2, and a lock groove 3 is provided on the lock hook 2; a lock bolt 4 is horizontally slidably arranged on the lock body 1, and in the locked state, the lock bolt 4 is inserted into the lock groove 3 of the lock hook 2; a locking assembly linked to the lock bolt 4, the locking assembly includes a lock tongue 5, an elastic reset member 6 and at least two groups of password units 7; each group of password units 7 is rotatably installed on the lock body 1 and is provided with a slot 8; the lock tongue 5 is vertically slidable on the lock body 1, and its sliding direction is the same as the opening direction of the lock hook 2; the elastic reset member 6 acts on the lock tongue 5 to drive the lock tongue 5 to maintain the upward reset state; the lock tongue 5 has insertion blocks 9 corresponding to the number of password units 7; when the password is correct, the slots 8 of all password units 7 are aligned with the insertion blocks 9 of the lock tongue 5, and the lock hook 2 can be pulled out outward and press down the lock tongue 5 to overcome the elastic force of the elastic reset member 6, so that the insertion blocks 9 enter the slots 8, and the lock bolt 4 is disengaged from the lock groove 3 to unlock; when the password is incorrect, the outer wall of at least one password unit 7 abuts against the insertion block 9 of the lock tongue 5, restricting the downward movement of the lock tongue 5 and the disengagement of the lock bolt 4 from the lock groove 3. In this embodiment, the elastic reset member 6 is preferably a return spring, which is installed in the lock body 1, and its installation position can be adjusted according to the design as long as it can provide an upward reset force for the lock tongue 5. The existing spring reset structure is already very mature, and the present application will not be specifically described.

[0031] Working principle: keyless operation is achieved through at least two sets of password units 7 to eliminate key dependence. When the password is wrong, the outer wall of the password unit 7 directly abuts against the lock tongue 5 plug block 9 to form a mechanical hard block, and the lock bolt 4 cannot be separated from the lock slot 3; when the password is correct, the lock tongue 5 plug block 9 can enter the slot 8, and the lock bolt 4 is separated from the lock slot 3 to achieve unlocking; password change operation: under the correct password, pull out the lock hook 2 and rotate the lock hook 2 180 degrees. At this time, the pushing surface 15 of the driving convex part 13 corresponds to the connecting rod 17, and then presses down to drive multiple rotating wheels 11 to move synchronously horizontally, and the linkage state with multiple password wheels 10 is released. The user can rotate the password wheel 10 to change the password. After the password change is completed, the lock hook 2 is pulled upward, and the multiple rotating wheels 11 are reset under the action of the compression spring 14 and mesh with their respective password wheels 10 (the meshing here is not the meshing between gears, but the password wheel 10 and the rotating wheel 11 are connected and keep a synchronous rotation state), and the password change operation is completed at this time.

[0032] The password unit 7 includes a password wheel 10 and a rotating wheel 11; the password wheel 10 is sleeved outside the rotating wheel 11; the password wheel 10 is rotatably installed in the limiting groove 12 of the lock body 1, and the password wheel 10 is at least partially exposed; the rotating wheel 11 is provided with the slot 8.

[0033] A plurality of rotating wheels 11 are arranged in linkage and can move laterally synchronously, and the rotating wheels 11 rotate in coordination with each other; a driving protrusion 13 is provided on a support arm 21 of the lock hook 2, and its position corresponds to the password unit 7; a compression spring 14 is provided at one end of the lock body 1 away from the driving protrusion 13, and the compression spring 14 abuts against the end rotating wheel 11; the rotating wheel 11 has a locking position and a changing position; the locking position: the rotating wheel 11 is meshed with the password wheel 10 to achieve synchronous rotation; the changing position: the driving protrusion 13 pushes the rotating wheel 11 to squeeze the compression spring 14, and the rotating wheel 11 is out of meshing with the password wheel 10, and the password wheel 10 can rotate alone. In this embodiment, the driving protrusion 13 can also adopt a cam structure, which is a prior art and is not elaborated in detail in this application.

[0034] The driving protrusion 13 includes a pushing surface 15 and an avoiding surface 16. When the compression spring 14 is in an extended state, the avoiding surface 16 of the driving protrusion 13 has no contact with the rotating wheel 11, and the rotating wheel 11 is engaged and rotates synchronously with the code wheel 10; the lock hook 2 rotates to make the pushing surface 15 of the driving protrusion 13 press against the rotating wheel 11, and the compression spring 14 stores energy to disengage the rotating wheel 11 from the code wheel 10.

[0035] The plurality of rotating wheels 11 are assembled through a connecting rod 17 , and both ends of the connecting rod 17 are fixed by a clamping spring 18 ; one end of the connecting rod 17 extends to the driving protrusion 13 .

[0036] A plurality of positioning blocks 19 are circumferentially and spacedly arranged on the outer wall of the rotating wheel 11, and positioning grooves 20 corresponding to the positioning blocks 19 in number are provided on the password wheel 10; when the rotating wheel 11 is in the password-locking position, the positioning blocks 19 are in alignment and cooperation with the positioning grooves 20 of the password wheel 10; when the rotating wheel 11 is in the password-changing position, the positioning blocks 19 are disengaged from the positioning grooves 20.

[0037] There are two locking bolts 4, which are respectively located on both sides of the locking tongue 5; the locking hook 2 includes two arms 21 with different lengths, and locking grooves 3 are respectively provided on the inner sides of the two arms 21 corresponding to the locking bolts 4; the lower end of the long arm 21 is provided with the driving convex part 13; the locking bolt 4 is transversely arranged in a cylindrical shape; the locking groove 3 is arranged as an arc-shaped groove; a sliding groove for the locking bolt 4 to slide is arranged transversely on the lock body 1.

[0038] The lock body 1 includes a sheath 23 and a lock shell 22 fixed inside the sheath 23. A plurality of limiting grooves 12 are spacedly arranged at the bottom of one end of the lock shell 22 away from the locking bolt 4; a plurality of moving grooves 24 corresponding to the limiting grooves 12 are spacedly arranged on the side wall of the lock shell 22; a dial 25 is fixedly connected to the side wall of the lock shell 22. The dial 25 has a plurality of dial rods 26 extending into the moving grooves 24, and each dial rod 26 is respectively placed on the corresponding password wheel 10 to provide rotational damping, prevent the password wheel 10 from rotating when not stressed, and at the same time provide a good operating feel for the user.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coded padlock, comprising a lock body (1) and a lock hook (2), wherein a lock groove (3) is provided on the lock hook (2); a lock bolt (4) is horizontally slidably arranged on the lock body (1), and in the locked state, the lock bolt (4) is inserted into the lock groove (3) of the lock hook (2); a locking assembly linked with the lock bolt (4), characterized in that: The locking component includes a locking tongue (5), an elastic reset member (6), and at least two groups of password units (7); each group of password units (7) is rotatably installed on the lock body (1) and is provided with a slot (8); the locking tongue (5) slides vertically on the lock body (1), and its sliding direction is the same as the opening direction of the locking hook (2); the elastic reset member (6) acts on the locking tongue (5) to drive the locking tongue (5) to maintain an upward reset state; the locking tongue (5) has insertion blocks (9) corresponding to the number of password units (7); when the password is correct, the slots (8) of all password units (7) are aligned with the insertion blocks (9) of the locking tongue (5), and the locking hook (2) can be pulled out outward and press down the locking tongue (5) to overcome the elastic force of the elastic reset member (6), so that the insertion blocks (9) enter the slots (8), and the locking bolt (4) disengages from the locking groove (3) to unlock; when the password is incorrect, the outer wall of at least one password unit (7) abuts against the insertion block (9) of the locking tongue (5), restricting the downward movement of the locking tongue (5) and the disengagement of the locking bolt (4) from the locking groove (3).

2. The password padlock according to claim 1, characterized in that: The password unit (7) includes a password wheel (10) and a rotating wheel (11); the password wheel (10) is sleeved outside the rotating wheel (11); the password wheel (10) is rotatably installed in the limiting groove (12) of the lock body (1), and at least part of the password wheel (10) is exposed; the rotating wheel (11) is provided with the slot (8).

3. The password padlock according to claim 2, wherein: A plurality of rotating wheels (11) are linked and can move horizontally synchronously, and the rotating wheels (11) are rotationally matched with each other; a driving convex portion (13) is provided on a support arm (21) of the locking hook (2), and its position corresponds to the password unit (7); a compression spring (14) is arranged at one end of the lock body (1) far from the driving convex portion (13), and the compression spring (14) abuts against the end rotating wheel (11); the rotating wheel (11) has a password locking position and a password changing position; Password locking position: The rotating wheel (11) meshes with the password wheel (10) to achieve synchronous rotation; Password changing position: The driving convex portion (13) pushes the rotating wheel (11) to compress the compression spring (14), the rotating wheel (11) disengages from the password wheel (10), and the password wheel (10) can rotate independently.

4. The password padlock according to claim 3, wherein: The driving convex portion (13) includes a pushing surface (15) and a clearance surface (16). When the compression spring (14) is in an extended state, the clearance surface (16) of the driving convex portion (13) has no contact with the rotating wheel (11), and the rotating wheel (11) meshes with the password wheel (10) for synchronous rotation; after the locking hook (2) rotates and presses down in the unlocked state, the pushing surface (15) of the driving convex portion (13) presses against the rotating wheel (11), and the compression spring (14) stores energy and the rotating wheel (11) disengages from the password wheel (10).

5. The password padlock according to claim 3, characterized in that: A plurality of rotating wheels (11) are combined by passing through a connecting rod (17), and both ends of the connecting rod (17) are fixed by snap rings (18); one end of the connecting rod (17) extends to the driving convex portion (13).

6. The password padlock according to claim 3 or 4 or 5, characterized in that: The outer wall of the rotating wheel (11) is provided with a plurality of positioning blocks (19) at intervals along the circumferential direction, and the code wheel (10) is provided with positioning grooves (20) whose number corresponds to the positioning blocks (19); when the rotating wheel (11) is in a locking position, the positioning blocks (19) are aligned with the positioning grooves (20) of the code wheel (10); when the rotating wheel (11) is in a changing position, the positioning blocks (19) are separated from the positioning grooves (20).

7. The password padlock according to claim 3 or 4 or 5, characterized in that: The locking bolts (4) are provided with two, respectively located on both sides of the locking tongue (5); the locking hook (2) comprises two arms (21) of different lengths, the inner sides of the two arms (21) are respectively provided with locking grooves (3) at the corresponding locking bolts (4); the lower end of the long arm (21) is provided with the driving protrusion (13); the locking bolt (4) is arranged horizontally in a cylindrical shape; the locking groove (3) is arranged in an arc-shaped groove; and a sliding groove for sliding the locking bolt (4) is arranged horizontally on the upper edge of the lock body (1).

8. The password padlock according to any one of claims 2-5, characterized in that: The lock body (1) comprises a sheath (23) and a lock shell (22) fixed in the sheath (23); a plurality of the limiting grooves (12) are arranged at intervals at the bottom of one end of the lock shell (22) away from the lock bolt (4); a plurality of movable grooves (24) corresponding to the limiting grooves (12) are arranged at intervals on the side wall of the lock shell (22); a paddle (25) is fixedly connected to the side wall of the lock shell (22); the paddle (25) has a plurality of levers (26) extending into the movable grooves (24), and each lever (26) is respectively mounted on a corresponding code wheel (10) to provide rotation damping.

Images