Coded lock capable of returning messy codes to zero

Abstract

A messy code return-to-zero coded lock comprises a lock shell, a sliding cover provided with a rack, an unlocking plate, a plurality of code wheels and an alignment ring connected with the code wheels, the code wheels are provided with synchronous protrusions, the alignment ring is provided with synchronous recesses, the unlocking plate is provided with alignment protrusions matched with alignment notches of the alignment ring, and the lock shell is provided with a lock handle. A compression spring A used for keeping the alignment ring connected with the code wheels is arranged between the alignment ring and the lock shell, incomplete gears are arranged on the peripheral faces of the code wheels, the multiple code wheels are arranged in a row in the direction of the rack, the incomplete gears are meshed with the rack, and when notch parts of the incomplete gears face the rack, the incomplete gears are meshed with the rack. And the password wheel rotates to a zero position.

Description

Technical Field

[0001] The utility model relates to the field of locks, in particular to a scrambled code zeroing password lock. Background Technique

[0002] At present, for the password lock with password wheels on the market, after turning the wheels to the correct password to unlock, it is necessary to manually scramble the password to hide the correct password. When scrambling, it is necessary to scramble each password wheel one by one, which is very troublesome. Publication No. CN102011513 A discloses a number lock zeroing device. The zeroing of this number lock relies on the rotation of the knob to drive the zeroing shaft rod to rotate, and finally drives the password wheel to rotate to achieve zeroing. This zeroing structure does not have a labor-saving effect during the zeroing operation. When rotating the knob, it is necessary to overcome too much friction between the gears, and the operation is very strenuous. Moreover, since most of the products are plastic parts, when the knob rotates with difficulty, each transmission part is likely to be worn or directly broken, resulting in a short service life.

[0003] A password lock with convenient password zeroing disclosed in CN113309414A adopts a rack arranged on a sliding cover to cooperate with a disc gear, a bevel gear, and a password wheel gear. The password wheel gear is an incomplete gear, and finally realizes rotation zeroing.

[0004] CN221169067U discloses a simple password lock, including a lock case, a plurality of password disks (alignment rings) arranged in the lock case, a plurality of handwheels (password wheels) driving the password disks to rotate synchronously, a password opening formed on the password disk. An unlock plate that can slide up and down is further arranged in the lock case, and a plurality of decryption parts matching the password openings are formed on the unlock plate. A first spring is connected to the unlock plate, and an unlocking part is arranged at the upper end of the unlock plate; An unlocking plate (unlocking part) is further arranged in the lock case. A square pin is fixedly connected to the inner side of the unlocking plate, and an unlocking password handle is connected to the outer side of the unlocking plate. The unlocking password handle is arranged outside the lock case. A sliding groove is formed in the unlocking plate, a lock block is arranged in the sliding groove, a second spring is further arranged above the lock block, and a locking part is arranged at the lower end of the lock block. A limiting ring is further formed in the lock case, and a through hole is formed in the limiting ring; A plurality of synchronous protrusions are arranged at the lower end of the handwheel, a plurality of synchronous circular grooves matching the synchronization are formed on the password disk, and the synchronous protrusions are arranged in the synchronous circular grooves. Here, the synchronous protrusions and the synchronous circular grooves are relatively shallow, mainly playing the role of being able to rotate synchronously. When subjected to a large external resistance, the synchronous protrusions can slide out of the synchronous circular grooves to achieve the function of changing the password; A code-changing part is further arranged on the lock case, and the code-changing part is arranged at the lower end of the unlock plate. A third spring is connected to the code-changing part, and the third spring gives the code-changing part an elastic force to push it out of the lock case. Under normal circumstances, the handwheel drives the password disk to rotate through the synchronous protrusions and the synchronous circular grooves, so that the password opening corresponds to the decryption part of the unlock plate to complete unlocking; The third spring pushes the code-changing part upward and will not interfere with the movement of the unlock plate. Only when changing the password, the code-changing part is pressed downward by an external force, so that the side of the code-changing part abuts against the unlock plate, so that the decryption part of the unlock plate is always in the password opening of the password disk and restricts the rotation of the password disk. At this time, when the handwheel is rotated, the unlocking password can be changed.

[0005] In the existing zeroing password locks, the password turntables are all coaxial (E05B37 / 02) in a way, and the transmission all adopts a gear set. Since the stroke of the reset component is limited, the gears are relatively large and the resistance is large. In order to reduce the resistance, a large amount of lubricating grease is applied to the gears. As the use time increases, the resistance gradually increases.

[0006] In the way that the password turntables are not coaxial (E05B37 / 12), since the handwheel is circular, it is necessary to pinch the handwheel tightly to rotate the password wheel. Especially when adjusting the code, it is necessary to make the synchronous protrusion disengage from the synchronous depression, which requires a very large rotational force. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a scrambled code zeroing password lock that can achieve scrambled code zeroing.

[0008] To achieve the above object, the present utility model provides a scrambled code zeroing password lock, comprising: a lock case, a sliding cover provided with a rack, an unlocking plate, a plurality of password wheels, and a positioning ring connected to the password wheels. The password wheels are provided with synchronous protrusions, the positioning ring is provided with synchronous depressions, the unlocking plate is provided with positioning protrusions that cooperate with the positioning notches of the positioning ring. A compression spring A for keeping the positioning ring connected to the password wheels is provided between the positioning ring and the lock case. The outer peripheral surface of the password wheel is provided with an incomplete gear. It is characterized in that the plurality of password wheels are arranged in columns along the direction of the rack, the incomplete gear meshes with the rack, and when the notch part of the incomplete gear faces the rack, the password wheel rotates to the zero position.

[0009] In an embodiment of the present utility model, it further includes a code adjustment button. The unlocking plate is provided with a code adjustment notch corresponding to the code adjustment button. A compression spring B is provided between the code adjustment button and the lock case. When the positioning protrusion is received in the positioning notch, the code adjustment button can be pressed down and inserted into the code adjustment notch to restrict the positioning protrusion from disengaging from the positioning notch. A rotating wheel is provided between the password wheel and the lock case. The rotating wheel is provided with a clutch post. The password wheel is provided with a clutch hole that cooperates with the clutch post. The rotating wheel is provided with a boss that protrudes from the lock case. The boss is pivotally connected to a plate-shaped password handle. The password handle can rotate from a folded position parallel to the password wheel to a use position perpendicular to the password wheel. The clutch post is provided with an eccentric rod that passes through the boss and abuts against the root of the password handle. A compression spring C is provided between the clutch post and the lock case. The root of the password handle is provided with a cam that cooperates with the eccentric rod. When the password handle is in the folded position, the concave part of the cam faces the eccentric rod, and the clutch post is separated from the clutch hole. When the password handle is in the use position, the convex plane of the cam faces the eccentric rod, and the clutch post is squeezed into the biting position where it bites the clutch hole. The compression spring C is used to keep the eccentric rod abutted against the cam. The use of the plate-shaped password handle facilitates the user to apply force to rotate the password wheel. At the same time, a clutch is provided so that the password handle can rotate idly relative to the password wheel when folded, and the password handle will not damage the password confidentiality.

[0010] In an embodiment of the present utility model, the unlocking plate is provided with a compression spring D for keeping the positioning protrusion received in the positioning notch.

[0011] In an embodiment of the present utility model, an unlocking plate is rotatably connected to the lock housing. A chute is formed in the unlocking plate, and a lock block is arranged in the chute. A compression spring E is arranged between the lock block and the unlocking plate. The lock housing is provided with a limiting ring sleeved outside the unlocking plate, and the limiting ring is provided with locking notches corresponding to the lock block and the unlocking plate. When the password is correct, the unlocking plate moves towards the direction of the lock block, and at the same time, the alignment protrusion moves into the alignment notch. The ejector rod of the unlocking plate presses the lock block to disengage from the locking notch. When the password is incorrect, the compression spring E drives the lock block to insert into the locking notch. Part of the lock block is accommodated in the chute and the other part is accommodated in the locking notch, and the unlocking plate is restricted from rotating.

[0012] In an embodiment of the present utility model, the rotating wheel is provided with a convex ring abutting against the inner surface of the lock housing. The password handle is provided with an indicating through hole. When the password handle is in the folded position, the indicating through hole corresponds to the position of the password window.

[0013] In an embodiment of the present utility model, a vertical plate pivotally connected to the password handle is arranged in the middle of the convex platform, and the clutch column is provided with a pair of eccentric rods respectively located on both sides of the vertical plate.

[0014] In an embodiment of the present utility model, the unlocking plate is connected to a rotating table exposed outside the lock housing, and the rotating table is pivotally connected to an unlocking handle in a plate-like structure.

[0015] In an embodiment of the present utility model, the unlocking plate is provided with a bolt hole for connecting a lock bolt. The lock housing is provided with a positioning tube surrounding the convex ring and extending towards the password wheel. The positioning tube is provided with a positioning protrusion, and the password wheel is provided with a corresponding plurality of positioning depressions capable of accommodating the positioning protrusion.

[0016] In an embodiment of the present utility model, the password wheels are arranged in two columns. Chutes cooperating with the rack are arranged on both sides of the lock housing. The gear window is opened in the chute. A positioning notch is arranged on the outer peripheral surface of the unlocking plate. The lock housing is slidably connected with a positioning pin cooperating with the positioning notch, and a compression spring F is arranged between the positioning pin and the lock housing.

[0017] In an embodiment of the present utility model, the unlocking plate is provided with a limiting hole, and the lock housing is provided with a limiting post accommodated in the limiting hole.

[0018] In the present utility model, the rack can directly drive the password wheel to rotate to zero, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the scrambled code zeroing password lock according to the first embodiment of the present utility model.

[0020] Figure 2 For Figure 1 the exploded view of the scrambled zeroing password lock.

[0021] Figure 3 For Figure 2 the structural schematic diagram of the front cover of

[0022] Figure 4 For Figure 2 the structural schematic diagram of the password wheel, alignment ring, rotating wheel, password handle, and clutch column of

[0023] Figure 5 For Figure 3 the structural schematic diagram of the password handle of

[0024] Figure 6 For Figure 3 the structural schematic diagram of the clutch column of

[0025] Figure 7 For Figure 3 the structural schematic diagram of the password wheel of Specific embodiments

[0026] 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-7 , a scrambled zeroing password lock according to the first embodiment of the present invention includes: a lock case, a sliding cover 2 provided with a rack 21, an unlocking plate 3, a plurality of password wheels 41, and an alignment ring 42 connected to the password wheels 41. The password wheel 41 is provided with a synchronous protrusion 411, the alignment ring 42 is provided with a synchronous recess 421, the unlocking plate 3 is provided with an alignment protrusion 31 that cooperates with the alignment notch 422 of the alignment ring 42, and a compression spring A for keeping the alignment ring 42 connected to the password wheel 41 is provided between the alignment ring 42 and the lock case. The outer peripheral surface of the password wheel 41 is provided with an incomplete gear. The plurality of password wheels 41 are arranged in columns along the direction of the rack 21. The incomplete gear meshes with the rack 21. When the notch part 41a of the incomplete gear faces the rack 21, the password wheel 41 rotates to the zero position. The lock case includes a front cover 11 and a bottom plate 12.

[0028] It further includes a code adjustment button 5. The unlocking plate 3 is provided with a code adjustment notch 33 corresponding to the code adjustment button 5. A compression spring B is provided between the code adjustment button 5 and the lock housing. When the alignment protrusion 31 is received in the alignment notch 422, the code adjustment button 5 can be pressed down to insert into the code adjustment notch 33 to limit the alignment protrusion 31 from disengaging from the alignment notch 422. A rotating wheel is provided between the password wheel 41 and the lock housing. The rotating wheel is provided with a clutch post 6. The password wheel 41 is provided with a clutch hole 410 that cooperates with the clutch post 6. The rotating wheel is provided with a boss 71 that exposes the lock housing. The boss 71 is pivotally connected to a plate-shaped password handle 8. The password handle 8 can be rotated from a folded position parallel to the password wheel 41 to a use position perpendicular to the password wheel 41. The clutch post 6 is provided with an eccentric rod 61 that passes through the boss 71 and abuts against the root of the password handle 8. A compression spring C is provided between the clutch post 6 and the lock housing. The root of the password handle 8 is provided with a cam 81 that cooperates with the eccentric rod 61. When the password handle 8 is in the folded position, the concave portion 81b of the cam 81 faces the eccentric rod 61, and the clutch post 6 is separated from the clutch hole 410. When the password handle 8 is in the use position, the convex plane 81a of the cam 81 faces the eccentric rod 61, and the clutch post 6 is squeezed into the engaging position of engaging the clutch hole 410. The compression spring C is used to keep the eccentric rod 61 abutted against the cam 81. The use of the plate-shaped password handle 8 facilitates the user to apply force to rotate the password wheel 41. At the same time, a clutch is provided so that the password handle 8 can rotate idly relative to the password wheel 41 when folded, and the password handle 8 does not damage the password confidentiality.

[0029] The unlocking plate 3 is provided with a compression spring D for keeping the alignment protrusion 31 received in the alignment notch 422.

[0030] The same as the prior art, the lock housing is rotatably connected with an unlocking plate 91. A chute 10 is formed in the unlocking plate 91. A lock block 92 is arranged in the chute 10. A compression spring E is provided between the lock block 92 and the unlocking plate 91. The lock housing is provided with a limit ring 101 sleeved outside the unlocking plate 91. The limit ring 101 is provided with a locking notch 10a corresponding to the lock block 92 and the unlocking plate 3. When the password is correct, the unlocking plate 3 moves towards the lock block 92, and at the same time, the alignment protrusion 31 moves towards the inside of the alignment notch 422. The ejector rod 32 of the unlocking plate 3 presses the lock block 92 to disengage from the locking notch. When the password is incorrect, the compression spring E drives the lock block 92 to insert into the locking notch. Part of the lock block 92 is received in the chute 10 and the other part is received in the locking notch, and the unlocking plate 91 is restricted from rotating.

[0031] The rotating wheel 7 is provided with a convex ring 72 that abuts against the inner surface of the lock housing. The password handle 8 is provided with an indicating through hole. When the password handle 8 is in the folded position, the indicating through hole 80 corresponds to the password window 100 in position.

[0032] The middle part of the boss 71 is provided with a vertical plate 73 pivotally connected to the password handle 8. The clutch post 6 is provided with a pair of eccentric rods 61 respectively located on both sides of the vertical plate 73. The boss 71 is provided with through holes corresponding to the eccentric rods.

[0033] The unlocking plate 91 is connected to a rotating table exposed outside the lock case, and the rotating table is pivotally connected to an unlocking handle 95 in the form of a plate structure.

[0034] The unlocking plate 91 is provided with a bolt hole 96 for connecting a lock bolt. The lock case is provided with a positioning tube 103 that extends toward the password wheel 41 and is arranged around the circumferential convex ring 72. The positioning tube 103 is provided with a positioning protrusion 1031, and the password wheel 41 is provided with a corresponding plurality of positioning depressions 413 that can accommodate the positioning protrusion 1031.

[0035] The password wheels 41 are arranged in two columns. Both sides of the lock case are provided with sliding grooves 10 that cooperate with the rack 21. The gear window is opened in the sliding groove 10. The outer peripheral surface of the unlocking plate 91 is provided with a positioning notch 910. The lock case is slidably connected with a positioning pin 97 that cooperates with the positioning notch 910. A compression spring F is arranged between the positioning pin 97 and the lock case.

[0036] The unlocking plate 3 is provided with a limit hole 301, and the lock case is provided with a limit post 18 that is received in the limit hole 301.

[0037] In the present utility model, the rack 21 can directly drive the password wheel 41 to rotate to zero, and the structure is simple.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A random code reset password lock, comprising: A lock housing, a sliding cover with a rack, an unlocking plate, a plurality of code wheels, and an alignment ring connected to the code wheel, the code wheel being provided with a synchronization protrusion, the alignment ring being provided with a synchronization recess, the unlocking plate being provided with an alignment protrusion matched with an alignment notch of the alignment ring, a compression spring A being provided between the alignment ring and the lock housing for keeping the alignment ring connected to the code wheel, an incomplete gear being provided on the outer circumference of the code wheel, and characterized in that a plurality of the code wheels are arranged in a row along the direction of the rack, the incomplete gear is meshed with the rack, and when the notch portion of the incomplete gear faces the rack, the code wheel rotates to the zero position.

2. The random code reset to zero combination lock according to claim 1, characterized in that: The password wheel is accommodated in the lock shell, and the lock shell is provided with a gear window exposing a partially incomplete gear and a password window for displaying the password; it also includes a code adjustment button, the unlocking plate is provided with a code adjustment notch corresponding to the code adjustment button, a compression spring B is provided between the code adjustment button and the lock shell, and when the alignment protrusion is accommodated in the alignment notch, the code adjustment button can be pressed down to insert into the code adjustment notch to limit the alignment protrusion from the alignment notch, a rotating wheel is provided between the password wheel and the lock shell, the rotating wheel is provided with a clutch column, the password wheel is provided with a clutch hole cooperating with the clutch column, the rotating wheel is provided with a boss exposed from the lock shell, and the boss is pivotally connected to a plate The password handle is shaped like a password wheel, and the password handle can be rotated from a folding position parallel to the password wheel to a use position perpendicular to the password wheel. The clutch column is provided with an eccentric rod passing through the boss and abutting the root of the password handle. A compression spring C is provided between the clutch column and the lock housing. A cam cooperating with the eccentric rod is provided at the root of the password handle. When the password handle is in the folding position, the recessed part of the cam faces the eccentric rod, and the clutch column is separated from the clutch hole. When the password handle is in the use position, the protruding plane of the cam faces the eccentric rod, and the clutch column is squeezed to an engaging position engaging with the clutch hole, and the compression spring C is used to keep the eccentric rod against the cam.

3. The random code reset to zero combination lock according to claim 2, characterized in that: The unlocking plate is provided with a compression spring D for keeping the alignment protrusion contained in the alignment notch.

4. The random code reset to zero combination lock according to claim 3, characterized in that: The lock shell is rotatably connected to an unlocking plate, a sliding groove is formed in the unlocking plate, a locking block is arranged in the sliding groove, a compression spring E is arranged between the locking block and the unlocking plate, and the lock shell is provided with a limiting ring sleeved outside the unlocking plate, the limiting ring is provided with a locking notch corresponding to the locking block and the unlocking plate, when the password is correct, the unlocking plate moves toward the direction of the locking block, and the alignment protrusion moves toward the alignment notch, and the top rod of the unlocking plate squeezes the locking block out of the locking notch, when the password is wrong, the compression spring E drives the locking block to be inserted into the locking notch, the locking block is partially accommodated in the sliding groove and the other part is accommodated in the locking notch, and the unlocking plate is restricted from rotating.

5. The random code reset to zero combination lock according to claim 4, characterized in that: The rotating wheel is provided with a convex ring abutting against the inner surface of the lock shell, and the password handle is provided with an indicating through hole. When the password handle is in the folded position, the indicating through hole corresponds to the position of the password window.

6. The random code reset to zero combination lock according to claim 5, characterized in that: A vertical plate pivotally connected to the code handle is provided in the middle of the boss, and a pair of eccentric rods are provided on both sides of the vertical plate respectively on the clutch column.

7. The random code reset to zero combination lock according to claim 6, characterized in that: The unlocking plate is connected with a rotating platform exposed from the lock housing, and the rotating platform is pivotally connected with an unlocking handle with a plate-like structure.

8. The random code reset to zero combination lock according to claim 6, characterized in that: The unlocking plate is provided with a bolt hole for connecting a lock bolt, the lock housing is provided with a positioning tube arranged around the convex ring and extending toward the password wheel, the positioning tube is provided with a positioning protrusion, and the password wheel is provided with a corresponding plurality of positioning recesses that can accommodate the positioning protrusion.

9. The random code reset to zero combination lock according to claim 8, characterized in that: The password wheels are arranged in two rows, and slide grooves cooperating with the racks are provided on both sides of the lock shell. The gear windows are opened in the slide grooves. A positioning notch is provided on the outer peripheral surface of the unlocking plate. The lock shell is slidably connected with a positioning pin cooperating with the positioning notch, and a compression spring F is provided between the positioning pin and the lock shell.

10. The random code reset to zero combination lock according to claim 9, characterized in that: The unlocking plate is provided with a limiting hole, and the lock housing is provided with a limiting column accommodated in the limiting hole.

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