Disc-shaped sequential repeatable key type mechanical coded lock

Abstract

A disc-shaped sequential repeatable button type mechanical coded lock is particularly suitable for a household door lock and comprises a lock body 1, an inner cylinder 5, an end cover 4, a lock cylinder 3, a ring 9, a button 2, a spring 11, a locking mechanism, an automatic restoring mechanism and a manual restoring mechanism, the ring 9 operates for unlocking without any negative pressure, the button is provided with the spring for restoring, the button is free of hand feeling, and the mechanical coded lock is convenient to use. Meanwhile, due to the application of the safety ring and the anti-probing ring, any possible means for unlocking the coded lock by an illegal technology can be completely and thoroughly blocked, so that more fixed convex shifts can be more concisely and directly arranged on the ring 9; the method not only brings a simpler structure, less memory of code elements, quicker operation, better end face vision of the coded lock and more code change selections, but also enables the coded lock to obtain super strong safety performance. According to the technical mechanism of the password lock, password codes need to be in sequence, and the keys can be repeatedly pressed at intervals, so that the password amount is larger.

Description

Technical Field

[0001] The present application is a disc-shaped sequentially repeatable key-pressing mechanical password lock used for anti-theft doors, safes (cabinets), etc. Background Art

[0002] In the prior art of the disc-type sequential key-press mechanical password lock disclosed in application number 202410424749.2, it includes a lock body 1, a lock core 4, and a button 2. The lock body 1 is composed of a lock body outer tube 1-1, a lock body inner tube 1-2, a lock body end skirt 1-3, a ring and a convex dial assembly arranged thereon. The ring is restored by a spring after operation. The restored spring must have a certain elastic force to ensure restoration. In this way, when the button itself does not have a spring, it has a certain feel. At the same time, it is affected by the setting of the convex dial assembly and the locking mechanism, and the possibility of changing the password is also less. In addition, after the key operation, the restoration mechanism of the lock end surface peripheral not only affects the image but also appears bloated, and the overall lock structure also appears complicated and not rigorous enough, and the number of secret keys still has room for improvement. The technical problem to be solved by this application is to eliminate the possible feel, provide a structure that is more efficient, simple and reliable, and automatically restores the key operation. When the same number of keys are set, there are more secret keys and more possibilities for changing passwords, so as to obtain a more secure and reliable mechanical password lock with simple and fast operation and fewer password memory elements. Summary of the invention The present application discloses a mechanical password lock, comprising a lock body 1, an inner cylinder 5, an end cover 4, a lock core 3, a ring 9, a button 2, a spring 11, the locking, automatic restoration mechanism and the manual restoration mechanism, characterized in that: the lock body 1 is fixedly connected to the inner cylinder 5 and the end cover 4, the lock core 3 is arranged on the lock body 1, the inner cylinder 5 and the end cover 4, the inner cylinder 5 is cylindrical, and a fence 5a is arranged on the cylindrical surface to ensure that the button accurately corresponds to the ring 9; The ring 9 is annular, and a plurality of protrusions 9a are provided on the end surface. The protrusions 9a are pyramidal, and are arranged on the inner cylinder 5, close to the ring 16, and the ring 16 is fixedly connected to the inner cylinder 5; The locking mechanism is composed of a groove body 6, a spring block 14', 14", a spring 11", and a blocking head 10. The middle section of the groove body 6 is a through hole, which is movably connected to the ring 9. A protrusion 6a is provided on the top to connect the lock body 1 to ensure its stable operation. A groove 6b is provided on the bottom to connect the spring block 14'. The spring blocks 14' and 14" are respectively in the shape of a conjoined body of a pin and a rectangular block, which can greatly increase the smoothness of operation and the reliability of locking. The spring 11" is respectively arranged on the inner cylinder 5 and the lock core 3. The blocking heads 10 are respectively arranged on the front and rear rings 9 of the groove body 6. When unlocking, the front blocking head 10 is connected to the groove body 6 at the last stage of the password key 2, and then the groove 6b is left to open the lock. When restoring, the rear blocking head 10 is connected at the last stage, and the groove 6b of the groove body is locked corresponding to the spring block 14'. A plurality of buttons 2 are arranged one by one on the inner cylinder fence 5a and the end cover 4. The front end of the button 2 is provided with an arc-shaped piece 2-2a and an inclined surface 2-2c, which can be connected with the convex dial 9a to drive it to operate. A spring 11 is arranged on the cylinder 2-2b connected thereto, and then connected to the rear section. The rear section with the button is provided with an arc-shaped piece 2-2a and a convex block 2-1b. The cross section of the rear section of the convex block 2-1b is a sector corresponding to the groove 7a, and its front upper part is a convergent convex, which is intended to maximize the use of the wide and easily accessible space above the sector; the spring 11 restores the button 2 even if it is restored after the button 2 is operated; The automatic restoration mechanism is composed of a connecting piece 18 and a lock core 3. The lock core 3 is provided with a groove 3a. The connecting piece 18 is a sheet-shaped sector. The connecting piece 18 is fixedly connected to the ring 9 and connected to the lock core groove 3a through the strip hole of the inner cylinder 5. The lock core 3 is rotated and restored with the ring 9 when the lock is unlocked. The manual restoration mechanism is composed of a safety ring 7, a dial button 12, and a spring 11'. The safety ring 7 is ring-shaped, and the outer end surface is provided with a groove 7a corresponding to the key protrusion 2-1b, and the inner end surface is provided with a protrusion 7b for connection. The dial button 12 is approximately cross-shaped, and the upper end of the cross is the operating end. Together with the spring 11', they are all arranged in the inner tube 5. The lower section of the cross of the dial button 12 connects the spring 11', the connecting member 18 and the protrusion 7b. The transverse section of the arc-shaped piece is arranged between the rotatable groove on the end surface of the inner tube 5 and the end cover 4. The transverse section of the arc-shaped piece is to ensure that the dial button 12 is operated stably, accurately and effectively. When the dial button 12 is operated, that is, The ring 9, the safety ring 7 and the groove body 6 are driven to rotate and restore at the same time. After the restoration is released, the spring 11', that is, the dial button 12 and the safety ring 7 are restored at the same time; the manual restoration mechanism is to operate this dial button 12 only when an error occurs in operating the password key 2 when unlocking. The safety ring 7 and the dial button 12 are always running synchronously, which can prevent any key from being pressed at the same time during the manual restoration of the dial button 12, that is, to prevent any possibility of using the restoration opportunity to explore the password key 2. The safety ring 7 eliminates the security loopholes in the restoration process; the button protrusion 2-1b is also connected to an anti-exploration ring 17' combination, and the anti-exploration ring 17' is ring-shaped and is arranged on the inner cylinder 5, with one side close to the safety ring 7. The other side of the ring 7 is connected to the gasket 13, and the outer peripheral end surface thereof is provided with grooves 17'a, each of which is the same size as the safety ring groove 7a. In a group of several corresponding grooves 17'a, the spacing between the grooves 17'a and the spacing between the grooves 7a can be equidistantly contracted or increased, and the arrangement of the grooves 17'a and the grooves 7a corresponds to more than half, and each can be moved in the same direction separately. When a key 2 passes through one of the corresponding grooves, the other keys 2 cannot pass through the other corresponding grooves 17'a and grooves 7a of the group; because the actual space of a groove is very limited, it is constrained by the effect that must be achieved, and the continuous The number is also limited, but it can be arranged into an anti-explosion circle by continuously integrating the 'difference' of different groups, and the same anti-explosion circle can also be set as a combination of two offsets to form a 'new' anti-explosion circle 17' that can run in reverse and obtain the same contraction effect as the original 'circle' on the other side. The 'combination' can make up for the limitations and loopholes of a single circle, and the overall contraction effect is more or less doubled. The anti-explosion circle 17' can prevent the possibility of pressing two keys at the same time to explore the password key 2, so that not only a fixed convex dial 9a can be set on the ring 9, but also a reverse-running key 2 can be set at the same time, so that any possible means of illegally opening the password lock is completely eliminated; The separately arranged end cover 4 can ensure the safety of the setting of the button 2, and can also be operated more conveniently and safely indoors to change the password. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 Cross-sectional view of the combination lock Figure 2 for Figure 1 Right view of Figure 3 Schematic diagram of the expansion of the ring 9 and button 2 for sequential setting Figure 4 FF schematic diagram Figure 5 Schematic diagram of the principle of anti-detection ring 17', 17" Figure 6 The following is a schematic diagram showing the arrangement of the anti-detection rings 17' and 17". DETAILED DESCRIPTION

[0005] The present application is further described in detail below in conjunction with the embodiments of the accompanying drawings. Other settings can be applied using existing technologies and will not be described again.

[0006] As shown in the figure, the present application is a mechanical password lock, comprising a lock body 1, an inner cylinder 5, an end cover 4, a lock core 3, a ring 9, a button 2, a spring 11, the locking, automatic restoration mechanism and the manual restoration mechanism, the lock body 1 is fixedly connected to the inner cylinder 5, the lock body 1 is fixedly connected to the inner cylinder 5 and the end cover 4 by bolts 15, the lock core 3 is arranged on the lock body 1, the inner cylinder 5 and the end cover 4, the inner cylinder 5 is cylindrical, and a fence 5a is arranged on the cylindrical surface; like Figure 1 , 3 As shown, the ring 9 is annular, and a plurality of protrusions 9a are provided on the end surface. The protrusions 9a are pyramidal and are arranged at the right end of the inner cylinder 5. The right side is fixedly connected to the inner cylinder 5 by a ring 16. like Figure 4 As shown, the locking mechanism is composed of a groove body 6, a spring block 14', 14", a spring 11", and a blocking head 10. The middle section of the groove body 6 is a through hole, and a movable connecting ring 9 is provided with a protrusion 6a on the top to connect the lock body 1, and a groove 6b is provided at the bottom, which is arranged in the groove of the inner cylinder 5 and connected to the spring block 14'. The spring blocks 14' and 14" are respectively in the shape of a conjoined body of a pin and a rectangular block, and the spring 11" is respectively arranged in the corresponding holes and grooves of the inner cylinder 5 and the lock core 3, and blocking heads 10 are respectively provided on the front and rear rings 9 of the groove body 6; when unlocking, the upper blocking head 10 is connected to the groove body 6 when the password key 2 is pressed in the last stage, and the groove 6b of the groove body leaves the spring block 14', pressing 14" and the spring 11", and the lock is opened; when restoring, when the password key 2 is restored to the last stage, the lower blocking head 10 is connected, and the spring block 14' corresponding to the groove 6b of the groove body locks the lock; like Figure 1 , 2As shown in FIG. 3, 25 buttons 2 are arranged one by one on the inner cylinder fence 5a and the end cover 4. The button 2 is provided with a button front section 2-2 and a rear section 2-1. The front section is provided with an arc-shaped piece 2-2a with an inclined surface 2-2c, and the rear section is provided with a cylinder 2-2b, on which a spring 11 is provided to connect a washer 8. The outer end surface of the washer 8 is provided with a groove corresponding only to the cylinder 2-2b part, which is arranged on the left side of the fence 5a, and then connected to the button rear section 2-1 by a thread, or the two sides of the rear section 2-1 can be connected by clamping the groove of the cylinder 2-2b, or connected by a pin or welding. The rear section of the button is provided with an arc-shaped piece 2-1a and a convex block 2-1b. The cross section of the left section of the convex block 2-1b is a fan-shaped corresponding to the groove 7a, and its upper right corner is a convergent convexity. The arc-shaped piece 2-1a of each button is closely connected; like Figure 1 , 2 As shown, the automatic restoration mechanism is composed of a connecting piece 18 and a lock core 3. The lock core 3 is provided with a groove 3a. The connecting piece 18 is a sheet-shaped sector, fixedly connected to the ring 9, and connected to the lock core groove 3a through the strip hole of the inner cylinder 5. When the lock core 3 rotates to unlock, the connecting piece 18 and the ring 9 rotate together with the groove body 6. When the lock core 3 rotates back to the locked position, the spring block 14" is correspondingly restored to lock under the action of the spring 11"; like Figure 1 , 2 As shown, the manual restoration mechanism is composed of a safety ring 7, a dial button 12, and a spring 11'. The safety ring 7 is ring-shaped, and the outer end surface is provided with a groove 7a corresponding to the key protrusion 2-1b, and the inner end surface is provided with a protrusion 7b, and a groove is provided in the middle; the dial button 12 is approximately cross-shaped, and the upper end of the cross is the operating end. Together with the spring 11', they are all arranged in the inner tube 5, and the lower end of the cross of the dial button 12 ( Figure 1 The arc-shaped transverse section 12a is arranged between the rotatable groove on the end surface of the inner cylinder 5 and the end cover 4, and the length and width of the grooves arranged on the left and right arc-shaped sheets of the transverse section are greater than the width of the track on which the lower section of the cross inserted into the inner cylinder 5 runs; like Figure 1 , 5 As shown in FIG. 6 , the key protrusion 2-1b is also connected to an anti-exploration ring 17', which is ring-shaped and has a groove 17'a on its outer peripheral end surface, and is arranged on the inner tube 5, with the right side close to the safety ring 7 and the left side connected to the gasket 13, each of which corresponds to the same as the safety ring groove 7a; Figure 5 Above, the spacing between the anti-explosion ring grooves 17'a is continuously and equidistantly staggered and correspondingly shrunk in the space corresponding to less than half of the groove 7a. If there are 9 (completely corresponding ones should also be counted as one) grooves 17'a in a group, the spacing between the grooves 17'a and the spacing between the grooves 7a are equidistantly shrunk ( Figure 5 , above), or it can be increased arithmetic progression ( Figure 5 , below), the groove 17'a corresponds to the groove 7a by more than half, and the distance that each groove 17a deviates from the center line of the groove 7a gradually increases from left to right and is not equal. Therefore, each corresponding groove can allow the key 2 to move through alone in the same direction, while the other corresponding grooves are fixed due to the entry of the key 2, and the opening of the 'groove' is more or less reduced due to the 'difference', making it impossible for other corresponding keys 2 in the same group to pass through. At the same time, since the actual space is only less than half of the groove, it is very limited, and is constrained by the effect that must be achieved. The number of consecutive ones displayed is 9 at most, and the difference is relatively small; the figure below is another group of 6 cases in which the anti-detection circle 17' is increased arithmetic difference, and the difference is relatively large. The actual situation may be different due to the number of buttons 2 set. If the number of consecutive arithmetic differences is increased or the effect is better, the opening width of the fan-shaped groove can be expanded as much as possible; Comparison Figure 3 The key protrusion 2-1b shown corresponds to the state of the protrusion 9a in different situations. Even if only a 'difference' maximum corresponding opening is contracted, the penetration depth is far from enough to make the two keys 2 touch the two possible corresponding protrusions 9a at the same time; More buttons 2 can be set up by organically or repeatedly arranging groups of different 'differences' running in the same direction to form an anti-explosion circle 17'. The same anti-explosion circle 17' can also be set up as a combination of two offset settings at appropriate corresponding positions. The anti-explosion circle 17" is two anti-explosion circles 17', one of which is moved: so that each corresponding 'groove' of the two circles has a different offset setting with the 'difference' of the center line, forming a 'new' anti-explosion circle 17" that can run in the reverse direction and obtain the same contraction effect as the original 'circle' on the other side; The inner end surfaces of the anti-exploration rings 17' and 17" are provided with protrusions 17'b and 17"b respectively extending toward each other, and a spring 11 is arranged in a groove on the end surface of the inner cylinder 5, that is, the two anti-exploration rings 17' and 17" can only run in their respective corresponding directions; The gasket 13 is arranged on the left side of the anti-detection ring 17, and the outer end surface can also be provided with grooves corresponding to all the key protrusions 2-1b or grooves 7a, and is fixedly connected and positioned with the inner tube 5 to control its stable operation to ensure its accurate correspondence.

[0007] The password code can be 3-6, and generally 4 are enough. The codes include ABA, ABC, ABAB, ABAC, ABCB, ABCD, ABABA, ABACA, ABACD, ABCBC, and ABCDE (6 and so on).

[0013] like Figure 3As shown, the inclined surface on the left is the password button 2, and the inclined surface on the right is the reverse N button 2 that interferes and destroys. The N button 2 can only be set at the next level corresponding to the first password button 2 convex dial 9a, and the one without the inclined surface is the candidate password change M button 2.

[0008] A is the first digit of the sequential password key, B is the second digit, the third and fifth digits are still A, and the fourth digit is C, that is, the password code is ABACA; the convex dial 9a corresponding to the first digit A password key 2, moves the convex dial 9a to the right side of the left fence 5a, and the second digit B password key 2 enters the same corresponding position as the first digit A password key 2 and the convex dial 9a. Note that the moving position and distance of the two must be the same when setting, and the inclined surface (tip) 2-2c corresponds to the convex dial 9a before and after to maintain appropriate fault tolerance space; the setting of the reverse N button 2 (there are several) is set only when it is ensured that there is no corresponding password button 2 at the same time throughout the whole process; the M key without the inclined triangle also avoids the situation that during the operation of the ring convex dial 9a, it may correspond to the convex dial 9a at the same time with a certain button 2.

[0009] Password change: Remove screw 15 indoors, remove end cover 4, select the target buttons of the same order to be replaced according to the instructions, remove the original password button and M button and then replace them, remember the password code until it is completed, then match end cover 4 to dial button 12 and tighten screw 15. Beneficial Effects

[0010] The ring of the password lock operates without (spring) hindrance and only needs to overcome a small friction force during the whole process of code operation and unlocking. Each key has its own spring restoration, so that the key has almost no feel. The setting of the safety ring makes it impossible to manually restore the password key, and the application of the anti-probing ring makes it impossible to press the key at the same time, which is the only illegal opening method. Therefore, more and more fixed convex dials can be directly and conveniently set on the ring, which not only brings a simpler structure, less code element memory, faster operation, better end face vision of the password lock, and more password change options, but also makes the password lock obtain super strong security performance. The technical mechanism of the password lock mechanism allows repeated key presses at intervals. If the number of keys is n, the password amount of the original sequential key presses = n(n-1)(n-2)(n-3)..., and the password amount of the sequentially repeatable key presses = n(n-1)n-1, which is not a little increase.

[0011] For this combination lock, if only 20 buttons are set: The number of 3-digit sequential repeatable key passwords = 20 × 19 × 19 = 7,220 The number of 4-digit sequential repeatable key passwords = 20 × 19 × 19 × 19 = 13,718 The number of 5-digit sequential repeatable key passwords = 20 × 19 × 19 × 19 × 19 = 2,606,420 The number of 6-digit sequential repeatable key passwords = 20 × 19 × 19 × 19 × 19 = 49,521,980.

Claims

1. A disc-shaped push-button mechanical password lock, comprising a lock body 1, an inner cylinder 5, an end cover 4, a lock core 3, a ring 9, a button 2, a spring 11, a locking mechanism, an automatic restoration mechanism and a manual restoration mechanism, characterized in that: The lock body 1 is connected to the inner tube 5 and the end cover 4. The lock core 3 is arranged on the lock body 1, the inner tube 5 and the end cover 4. The inner tube 5 is cylindrical and has a fence 5a on the cylindrical surface. The locking mechanism is connected to the ring 9. The ring 9 is arranged on the cylindrical surface of the inner tube 5 and has a plurality of convex dials 9a on the end surface. The locking mechanism is composed of a groove body 6, a spring block 14', 14", a spring 11", and a stopper 10. The middle section of the groove body 6 is a through hole, which is movably connected to the ring 9 and has a convex dial 9a on the top. The spring 14' and the spring 14' are connected to the lock body 1, and a groove 6b is provided below to connect the spring block 14'. The spring blocks 14' and 14' are respectively connected to the pin and the rectangular block, and the spring 11' is respectively arranged on the inner cylinder 5 and the lock core 3, and the front and rear rings 9 of the groove body 6 are respectively provided with a stopper 10; a plurality of the keys 2 are arranged on the inner cylinder fence 5a and the end cover 4, and the keys 2 are provided with a front section 2-2 and a rear section 2-1, and the front section is provided with an arc-shaped piece 2-2a, and a slope 2-2c can correspond to the connection The convex dial 9a is connected to the cylinder 2-2b, and a spring 11 is arranged on the cylinder 2-2b, which is then connected to the rear section, and the rear section is provided with an arc-shaped sheet 2-1a and a convex block 2-1b; the automatic restoration mechanism is composed of a connecting member 18 and a lock core 3, and the lock core 3 is provided with a groove 3a, and the connecting member 18 is a sheet-shaped fan-shaped member, and the connecting member 18 is fixedly connected to the ring 9, and is connected to the lock core groove 3a through the strip hole of the inner cylinder 5; the manual restoration mechanism is composed of a safety ring 7, a dial button 12, and a spring 11', and the safety ring 7 is a ring, and the outer end The surface is provided with a groove 7a corresponding to the key protrusion 2-1b one by one, and the inner end surface is provided with a protrusion 7b. The dial button 12 is approximately cross-shaped and is arranged between the inner tube 5 and the end cover 4 with the spring 11'. The dial button 12 connects the spring 11', the connecting piece 18 and the protrusion 7b; the key protrusion 2-1b is also connected to an anti-exploration ring 17', which is ring-shaped and has a groove 17'a on its outer peripheral end surface. It is arranged in the inner tube 5 and connected to the safety ring 7.

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