Jumble zero cipher lock

Abstract

The application discloses a random code zero-reset password lock, which comprises a lock shell, a sliding cover provided with a rack, an unlocking plate, a plurality of password wheels and a positioning ring connected with the password wheels. The password wheel is provided with a synchronous convex, the positioning ring is provided with a synchronous concave, the unlocking plate is provided with a positioning convex matched with a positioning concave of the positioning ring, a compression spring A for keeping the positioning ring connected with the password wheels is arranged between the positioning ring and the lock shell, and the outer circumferential surface of the password wheel is provided with an incomplete gear. The plurality of password wheels are arranged in columns along the direction of the rack. The incomplete gear is engaged with the rack. When the gap part of the incomplete gear faces the rack, the rotation of the password wheel is reset to zero.

Description

Technical Field

[0001] This invention relates to the field of locks, specifically a scrambled code zeroing combination lock. Background Technology

[0002] Currently, combination locks with dial wheels on the market require manual scrambling to hide the correct combination after the correct combination is entered. This scrambling involves manually scrambling each dial wheel individually, which is very cumbersome. Announcement No. CN102011513 A discloses a zeroing device for combination locks. This device relies on rotating a knob to drive a zeroing shaft, which in turn rotates the combination wheels to achieve zeroing. However, this zeroing structure does not offer a labor-saving effect during the zeroing operation. Rotating the knob requires overcoming excessive friction between gears, making it very strenuous. Furthermore, since the product is mostly made of plastic, the various transmission parts are prone to wear or breakage when the knob is rotated with considerable force, resulting in a short service life.

[0003] CN113309414A discloses a combination lock with an easy-to-zero password mechanism. This mechanism uses a rack and pinion mechanism on the sliding cover, along with a disc gear, a bevel gear, and a combination wheel gear. The combination wheel gear is an incomplete gear, which ultimately achieves rotational zeroing.

[0004] CN221169067U discloses a simple combination lock, including a lock shell, several combination discs (alignment rings) disposed inside the lock shell, several handwheels (combination wheels) that drive the combination discs to rotate synchronously, and combination slots formed on the combination discs. The lock shell also includes a sliding unlocking plate with several decryption parts matching the combination slots. A first spring is connected to the unlocking plate, and the upper end of the unlocking plate has an unlocking part. The lock shell also includes an unlocking plate (unlocking part), with a square pin fixedly connected to its inner side and an unlocking combination handle connected to its outer side. The unlocking combination handle is located outside the lock shell. A sliding groove is formed inside the unlocking plate, and a locking block is disposed within the groove. A second spring is located above the locking block, and the lower end of the locking block has a locking part. A limit ring with a through hole is also formed inside the lock shell. Several synchronous protrusions are provided at the lower end of the handwheels, and several combination discs are formed... The lock housing features a synchronized groove and a synchronized protrusion within it. These are shallow, primarily designed for synchronized rotation. Under significant external resistance, the protrusion can slide out of the groove, allowing for combination lock changes. A combination lock changer is also provided on the lock housing, located at the lower end of the unlocking plate. A third spring is connected to the changer, providing a spring force that pushes it outwards from the lock housing. Under normal conditions, the handwheel, via the synchronized protrusion and groove, rotates the combination plate, aligning the combination slot with the unlocking plate's decryption section to unlock. The third spring pushes the changer upwards without interfering with the unlocking plate's movement. Only when a combination lock change is needed is the changer pressed downwards by external force, causing its side to press against the unlocking plate. This ensures the unlocking plate's decryption section remains within the combination slot, restricting the plate's rotation. Turning the handwheel at this point changes the combination lock.

[0005] Existing zeroing combination locks all use a coaxial combination dial (E05B37 / 02) and a gear set for transmission. Due to the limited stroke of the reset component, the gears are relatively large and have high resistance. In order to reduce the resistance, a large amount of lubricating grease is applied to the gears. As the usage time increases, the resistance gradually increases.

[0006] The combination wheel is not axle (E05B37 / 12). Because the handwheel is round, you need to squeeze the handwheel tightly to turn it. In particular, when adjusting the code, you need to make the synchronization protrusion separate from the synchronization recess, which requires a lot of rotational force. Summary of the Invention

[0007] The purpose of this invention is to provide a scrambled code zeroing combination lock that can achieve scrambled code zeroing.

[0008] To achieve the above objectives, the present invention provides a random code zeroing combination lock, comprising: a lock shell, a sliding cover with a rack, an unlocking plate, multiple combination wheels, and an alignment ring connected to the combination wheels. Each combination wheel has a synchronous protrusion, and the alignment ring has a synchronous recess. The unlocking plate has an alignment protrusion that engages with the alignment notch of the alignment ring. A compression spring A is provided between the alignment ring and the lock shell to maintain the connection between the alignment ring and the combination wheels. The outer circumferential surface of each combination wheel has an incomplete gear. The combination wheels are arranged in a column along the rack direction, and the incomplete gear meshes with the rack. When the notch of the incomplete gear faces the rack, the combination wheel rotates to the zero position.

[0009] In one embodiment of the present invention, a code-changing button is further included. The unlocking plate has a code-changing notch corresponding to the code-changing button. A compression spring B is provided between the code-changing button and the lock housing. When the alignment protrusion is accommodated in the alignment notch, the code-changing button can be pressed down to insert into the code-changing notch to prevent the alignment protrusion from disengaging from the alignment notch. A rotating wheel is provided between the combination wheel and the lock housing. The rotating wheel has a clutch pin. The combination wheel has a clutch hole that cooperates with the clutch pin. The rotating wheel has a boss protruding from the lock housing. The boss is pivotally connected to a plate-shaped combination handle. The combination handle can be rotated parallel to the lock housing. The combination wheel is rotated from its folded position to a position perpendicular to its operating position. The clutch pin has an eccentric rod that passes through the boss and abuts against the root of the combination handle. A compression spring C is provided between the clutch pin and the lock housing. A cam at the root of the combination handle engages with the eccentric rod. When the combination handle is in the folded position, the concave portion of the cam faces the eccentric rod, and the clutch pin is separated from the clutch hole. When the combination handle is in the operating position, the convex surface of the cam faces the eccentric rod, and the clutch pin is pressed into the engagement position of the clutch hole. The compression spring C is used to keep the eccentric rod against the cam. The plate-shaped combination handle facilitates the user's rotation of the combination wheel, and the clutch handle allows it to rotate freely relative to the combination wheel when folded, without compromising the security of the combination.

[0010] In one embodiment of the invention, the unlocking plate is provided with a compression spring D for retaining the alignment protrusion within the alignment notch.

[0011] In one embodiment of the present invention, the lock housing is rotatably connected to an unlocking plate. The unlocking plate has a groove formed inside, and a lock block is disposed in the groove. A compression spring E is provided between the lock block and the unlocking plate. The lock housing has a limiting ring sleeved outside the unlocking plate. The limiting ring has a locking notch corresponding to the lock block and the unlocking plate. When the password is correct, the unlocking plate moves toward the lock block, and at the same time, the alignment protrusion moves toward the alignment notch. The push rod of the unlocking plate presses the lock block away 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 groove and the other part is accommodated in the locking notch. The unlocking plate is restricted from rotating.

[0012] In one embodiment of the present invention, the rotating wheel is provided with a protruding ring abutting against the inner surface of the lock case, and the combination handle is provided with an indicator through hole. When the combination handle is in the folded position, the indicator through hole corresponds to the position of the combination window.

[0013] In one embodiment of the present invention, the boss has a vertical plate in the middle that is pivotally connected to the password handle, and the clutch column has a pair of eccentric rods located on both sides of the vertical plate.

[0014] In one embodiment of the invention, the unlocking plate is connected to a rotating platform that exposes the lock housing, and the rotating platform is pivotally connected to an unlocking handle of a plate-like structure.

[0015] In one embodiment of the present invention, the unlocking plate is provided with a bolt hole for connecting a bolt, the lock housing is provided with a positioning tube extending toward the combination wheel and surrounding the protruding ring, the positioning tube is provided with a positioning protrusion, and the combination wheel is provided with a plurality of corresponding positioning recesses that can accommodate the positioning protrusion.

[0016] In one embodiment of the present invention, the combination wheels are arranged in two rows, the lock housing has sliding grooves on both sides that cooperate with the rack, the gear window is opened in the sliding groove, the outer peripheral surface of the unlocking plate has a positioning notch, the lock housing is slidably connected to a positioning pin that cooperates with the positioning notch, and a compression spring F is provided between the positioning pin and the lock housing.

[0017] In one embodiment of the present invention, 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 this invention, the rack can directly drive the code wheel to rotate to zero, resulting in a simple structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the scrambled code zeroing combination lock according to the first embodiment of the present invention.

[0020] Figure 2 for Figure 1 An exploded image of a garbled, zeroed-out combination lock.

[0021] Figure 3 for Figure 2 A schematic diagram of the front cover.

[0022] Figure 4 for Figure 2 A schematic diagram of the structure of the cipher wheel, alignment ring, rotating wheel, cipher handle, and clutch pin.

[0023] Figure 5 for Figure 3 A schematic diagram of the structure of the cryptographic handle.

[0024] Figure 6 for Figure 3 A schematic diagram of the clutch column structure.

[0025] Figure 7 for Figure 3 A schematic diagram of the cipher wheel structure. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-7 A random-code zeroing combination lock according to a first embodiment of the present invention includes: a lock shell, a sliding cover 2 with a rack 21, an unlocking plate 3, multiple combination wheels 41, and an alignment ring 42 connected to the combination wheels 41. The combination wheels 41 have synchronous protrusions 411, the alignment ring 42 has synchronous recesses 421, the unlocking plate 3 has alignment protrusions 31 that cooperate with the alignment notches 422 of the alignment ring 42, and a compression spring A between the alignment ring 42 and the lock shell for maintaining the connection between the alignment ring 42 and the combination wheels 41. The outer circumferential surface of the combination wheels 41 has an incomplete gear. The multiple combination wheels 41 are arranged in a row along the direction of the rack 21. The incomplete gear meshes with the rack 21. When the notch portion 41a of the incomplete gear faces the rack 21, the combination wheel 41 rotates to the zero position. The lock shell includes a front cover 11 and a base plate 12.

[0028] It also includes a code-changing button 5. The unlocking plate 3 has a code-changing notch 33 corresponding to the code-changing button 5. A compression spring B is provided between the code-changing button 5 and the lock housing. When the alignment protrusion 31 is accommodated in the alignment notch 422, the code-changing button 5 can be pressed down to insert into the code-changing notch 33 to prevent the alignment protrusion 31 from disengaging from the alignment notch 422. A rotating wheel is provided between the combination wheel 41 and the lock housing. The rotating wheel has a clutch pin 6. The combination wheel 41 has a clutch hole 410 that cooperates with the clutch pin 6. The rotating wheel has a boss 71 that protrudes from the lock housing. The boss 71 is pivotally connected to a plate-shaped combination handle 8. The combination handle 8 can be folded from a position parallel to the combination wheel 41. When rotated to the operating position perpendicular to the combination wheel 41, the clutch pin 6 has an eccentric rod 61 that passes through the boss 71 and abuts against the root of the combination handle 8. A compression spring C is provided between the clutch pin 6 and the lock housing. The root of the combination handle 8 has a cam 81 that cooperates with the eccentric rod 61. When the combination handle 8 is in the folded position, the recessed part 81b of the cam 81 faces the eccentric rod 61, and the clutch pin 6 is separated from the clutch hole 410. When the combination handle 8 is in the operating position, the protruding plane 81a of the cam 81 faces the eccentric rod 61, and the clutch pin 6 is pressed into the engagement position of the clutch hole 410. The compression spring C is used to keep the eccentric rod 61 against the cam 81. The plate-shaped combination handle 8 makes it easy for the user to apply force to rotate the combination wheel 41. At the same time, the combination handle 8 is designed to rotate freely relative to the combination wheel 41 when folded, and the combination handle 8 will not compromise the confidentiality of the combination.

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

[0030] Similar to existing technology, the lock housing is rotatably connected to an unlocking plate 91. The unlocking plate 91 has a groove 10 formed inside, and a lock block 92 is disposed inside the groove 10. A compression spring E is provided between the lock block 92 and the unlocking plate 91. The lock housing is provided with a limiting ring 101 sleeved outside the unlocking plate 91. The limiting ring 101 has 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 toward the lock block 92, and at the same time, the alignment protrusion 31 moves toward the alignment notch 422. The push rod 32 of the unlocking plate 3 presses the lock block 92 out of 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 accommodated in the groove 10 and the other part is accommodated in the locking notch, and the unlocking plate 91 is restricted from rotating.

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

[0032] The boss 71 has a vertical plate 73 in the middle that is pivotally connected to the cipher handle 8, and the clutch post 6 has a pair of eccentric rods 61 located on both sides of the vertical plate 73. The boss 71 has through holes corresponding to the eccentric rods.

[0033] The unlocking plate 91 is connected to a rotating platform that exposes the lock case, and the rotating platform is pivotally connected to an unlocking handle 95 with a plate-like structure.

[0034] The unlocking plate 91 is provided with a bolt hole 96 for connecting the bolt, and the lock shell is provided with a positioning tube 103 extending toward the combination wheel 41 and surrounding the protruding ring 72. The positioning tube 103 is provided with a positioning protrusion 1031, and the combination wheel 41 is provided with a plurality of corresponding positioning recesses 413 that can accommodate the positioning protrusion 1031.

[0035] The combination wheel 41 is arranged in two rows. The lock housing has a sliding groove 10 on both sides that cooperates with the rack 21. The gear window is opened in the sliding groove 10. The outer peripheral surface of the unlocking plate 91 has a positioning notch 910. The lock housing is slidably connected to a positioning pin 97 that cooperates with the positioning notch 910. A compression spring F is provided between the positioning pin 97 and the lock housing.

[0036] The unlocking plate 3 is provided with a limiting hole 301, and the lock housing is provided with a limiting post 18 that is accommodated in the limiting hole 301.

[0037] In this invention, the rack 21 can directly drive the password wheel 41 to rotate to zero, resulting in a simple structure.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scrambled character zeroing combination lock, comprising: The lock housing comprises a sliding cover with a rack, an unlocking plate, multiple combination wheels, and a aligning ring connected to each combination wheel. Each combination wheel has a synchronizing protrusion, and the aligning ring has a synchronizing recess. The unlocking plate has an aligning protrusion that mates with the aligning notch of the aligning ring. A compression spring A is provided between the aligning ring and the lock housing to maintain the connection between the aligning ring and the combination wheel. The outer circumference of each combination wheel has an incomplete gear. The multiple combination wheels are arranged in a row along the rack direction. The incomplete gear meshes with the rack. When the notch of the incomplete gear faces the rack, the combination wheel rotates to its zero position. The combination wheel is housed within the lock housing, which has a gear window exposing a portion of the incomplete gear and a combination window for displaying the combination. The lock housing also includes a code-setting button. The unlocking plate has a code-setting notch corresponding to the button. A compression spring B is provided between the code-setting button and the lock housing. When the aligning protrusion is housed within the notch, the code-setting button can be pressed down. The aligning protrusion is restricted from disengaging from the aligning notch within the aligning notch. A rotating wheel is provided between the combination wheel and the lock housing. The rotating wheel has a clutch pin, and the combination wheel has a clutch hole that mates with the clutch pin. The rotating wheel has a boss that protrudes from the lock housing. The boss is pivotally connected to a plate-shaped combination handle. The combination handle can rotate from a folded position parallel to the combination wheel to a working position perpendicular to the combination wheel. The clutch pin has an eccentric rod that passes through the boss and abuts against the root of the combination handle. A compression spring C is provided between the clutch pin and the lock housing. A cam that mates with the eccentric rod is provided at the root of the combination handle. When the combination handle is in the folded position, the concave portion of the cam faces the eccentric rod, and the clutch pin is separated from the clutch hole. When the combination handle is in the working position, the convex surface of the cam faces the eccentric rod, and the clutch pin is squeezed to engage with the clutch hole. The compression spring C is used to keep the eccentric rod against the cam.

2. The scrambled code zeroing combination lock according to claim 1, characterized in that, The unlocking plate is provided with a compression spring D for keeping the alignment protrusion accommodated within the alignment notch.

3. The scrambled code zeroing combination lock according to claim 2, characterized in that, The lock housing is rotatably connected to an unlocking plate. The unlocking plate has a groove formed inside, and a lock block is disposed in the groove. A compression spring E is provided between the lock block and the unlocking plate. The lock housing has a limiting ring sleeved on the unlocking plate. The limiting ring has a locking notch corresponding to the lock block and the unlocking plate. When the password is correct, the unlocking plate moves toward the lock block, and at the same time, the alignment protrusion moves toward the alignment notch. The push rod of the unlocking plate presses the lock block away 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 groove and the other part is accommodated in the locking notch. The unlocking plate is restricted from rotating.

4. The scrambled code zeroing combination lock according to claim 3, characterized in that, The rotating wheel has a protruding ring that abuts against the inner surface of the lock case, and the combination handle has an indicator through hole. When the combination handle is in the folded position, the indicator through hole corresponds to the position of the combination window.

5. The scrambled code zeroing combination lock according to claim 4, characterized in that, The boss has a vertical plate in the middle that is pivotally connected to the password handle, and the clutch column has a pair of eccentric rods located on both sides of the vertical plate.

6. The scrambled code zeroing combination lock according to claim 5, characterized in that, The unlocking plate is connected to a rotating platform that exposes the lock housing, and the rotating platform is pivotally connected to a plate-shaped unlocking handle.

7. The scrambled code zeroing combination lock according to claim 5, characterized in that, The unlocking plate has a bolt hole for connecting the bolt, and the lock case has a positioning tube extending toward the combination wheel and surrounding the protruding ring. The positioning tube has a positioning protrusion, and the combination wheel has a plurality of corresponding positioning recesses that can accommodate the positioning protrusion.

8. The scrambled code zeroing combination lock according to claim 7, characterized in that, The combination wheels are arranged in two rows. The lock housing has sliding grooves on both sides that cooperate with the rack. The gear window is opened in the sliding groove. The outer peripheral surface of the unlocking plate has a positioning notch. The lock housing is slidably connected to a positioning pin that cooperates with the positioning notch. A compression spring F is provided between the positioning pin and the lock housing.

9. The scrambled code zeroing combination lock according to claim 8, characterized in that, The unlocking plate is provided with a limiting hole, and the lock housing is provided with a limiting post that is accommodated in the limiting hole.

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