U-shaped groove mechanical lock and key

Abstract

This application relates to a U-shaped groove mechanical lock and key for door locks, car locks, etc. The lock includes a lock body, a lock core, a ring piece, and a bolt. The inner peripheral end face of the ring piece is provided with a convex projection for connecting to the key tooth pattern, and the outer peripheral end face is provided with a U-shaped groove and a |_ / -shaped groove corresponding to connect to the bolt. The ring piece is continuously arranged on the lock core, and the bolt is arranged on the lock core to connect the lock body and the ring piece. The main body of the key is a cylinder, and the front end face is provided with a concave opening and connected to an axial through groove. On the end face of the cylinder connected to one side of the through groove, there are circumferential concave and convex tooth patterns corresponding to all the convex projections of the ring pieces one by one. The structure of this lock is simple. If 22 ring pieces are set, the number of secret keys = 45<supgt;n< / supgt>, n = 22, and the number of secret keys (approx.) = 25.646059 quintillion quintillion quintillion quintillion quintillion. That is, taking about 31,500,000 seconds in a year and decoding three times per second, the probability of unlocking the lock continuously for 100 million quintillion years is at least one in 25.646059 quintillion, and the most crucial thing is that there is no possibility of any technical trickery.

Description

Technical Field

[0001] This application relates to a U-shaped groove mechanical lock and key for doors, vehicles, etc. Background Art

[0002] For the annular plate mechanical lock with the application number 201810248974x in the prior art, the annular plates are continuously arranged in the lock core setting holes, the bolt connects the annular plates and the lock body, _ / or |_ / shaped grooves are arranged on the outer peripheral end face of the annular plates to connect the bolt, convex protrusions are arranged on the inner peripheral end face of the annular plates, and on the end face of the cylindrical key, its concave front end opening is connected to a snake-shaped tooth pattern. However, for the continuously arranged and closely spaced annular plates, the key of each annular plate has only three setting points, namely left, middle, and right, which greatly limits the operating range of the left and right rotation changes or the number of key selection points. The large _ / or |_ / shaped groove openings also have a high possibility of being utilized by illegal unlockers, resulting in relatively low safety and reliability. The purpose of this application is to greatly improve the movement range of the annular plates through the reform of the key tooth pattern, significantly enhance the safety and reliability, and eliminate the possibility of technical unlocking of the lock. Summary of the Invention

[0003] An annular plate mechanical lock of this application includes a lock body, a lock core, annular plates, and a bolt. It is characterized in that: the annular plates are sheet-shaped rings, convex protrusions are arranged on the inner peripheral end face to connect the key tooth pattern, and U-shaped grooves and |_ / shaped grooves can be arranged at any position on the outer peripheral end face opposite to the convex protrusions of the annular plates to correspondingly connect the bolt. For the annular plate with a |_ / shaped groove on its outer peripheral end face, there are at least two such annular plates, which can push the bolt to rise and restore the locking; for other annular plates, U-shaped grooves are arranged on their outer peripheral end faces to correspondingly connect the bolt. The U-shaped grooves can maximize the elimination of the possibility of unlocking by any illegal technical means. The annular plates are continuously and uninterruptedly arranged on the lock core, and the bolt is arranged on the lock core to connect the lock body and the annular plates.

[0004] The key corresponding to the above mechanical lock is characterized in that: the main body of the key is a cylinder, a concave opening is arranged at the front part of its end face and is connected to an axial through groove. The axial through groove is the channel for the key to enter and exit the convex protrusions of the corresponding annular plates. On the end face of the cylinder connected to one side of the through groove, circumferentially arranged concave, convex (including stepped) tooth patterns corresponding to all the convex protrusions of the annular plates are provided. The circumferentially arranged concave tooth patterns can extend close to the axial through groove approaching 360 degrees, and the circumferential distance between adjacent concave, convex (including stepped) tooth patterns can be set to the maximum distance. Description of the Drawings

[0005] Figure 1 It is the front view of the lock of this application

[0006] Figure 2 It is the enlarged expanded view of the key tooth pattern on the end face of the cylindrical main body

[0007] Figure 3 It is the cross-sectional view of the lock core. DETAILED DESCRIPTION

[0008] The present application will be further described in detail below in conjunction with the embodiments of the accompanying drawings, but other settings and connections of the lock can be made in the manner of the prior art and will not be described again.

[0009] like Figure 1 , 3 As shown, the U-shaped groove mechanical lock of the present application includes a lock body 1, a lock core 2, a ring piece 3, and a pin 4. The ring piece 3 is in the shape of a ring, and the inner circumferential end surface of the ring piece 3 is provided with a convex dial 3b for connecting to a key tooth 5a. The outer end surfaces of at least two ring pieces 3 (at a balanced position corresponding to the center of gravity of the pin 4) are provided with |_ / -shaped grooves 3a, whose inclined surfaces can be connected to the pin 4 at the same time to restore the lock, and the outer circumferential end surfaces of other ring pieces 3 are all provided with U-shaped grooves 3a; the ring pieces 3 are continuously arranged through the lock core opening 2a, and the opening 2a is cut straight from top to bottom with the width of the inner diameter of the cylindrical cavity to retain as much strength as possible, and the ring pieces 3 are only connected with as few inner circumferential side end surfaces as possible to avoid friction and rotation; the pin 4 is arranged on the lock core 2, connecting the ring piece 3 and the lock body 1.

[0010] like Figure 2 The key 5 corresponding to the U-shaped groove mechanical lock has a main body of a cylinder, and a concave opening 5b is provided on the front end surface thereof and connected to the axial through groove 5c. On the end surface of the cylinder connected to the right side of the through groove 5c, there are annular concave and convex (including step) teeth 5a corresponding to all the ring plate convex picks 3b one by one. The secret key can be set at an extreme long distance between adjacent concave and convex teeth 5a. The annular concave and convex (including step) teeth 5a can be extended annularly to the maximum extent close to the through groove 5c. The through groove 5c also extends axially to the lock core protrusion 2b. The lock core protrusion 2b can run 360 degrees clockwise and counterclockwise in the key ring groove 5e. The lock core protrusion 2b is the support for the smooth entry and locking exit of the key 5.

[0011] When unlocking, align the front concave opening 5b of the key 5 with the lock core bump 2b, and push it tightly against the left wall end face in the through groove 5c into the keyhole to the end. The front concave opening 5b of the key 5 houses all the ring piece convex projections 3b in a line on the left wall end face of the key through groove 5c. When it can no longer be pushed, all the concave, convex (including stepped) tooth patterns 5a of the key 5 correspond one by one in the circumferential direction with all the ring piece convex projections 3b, and the lock core bump 2b is also in the annular groove 5d of the key. At this time, while pressing, rotate counterclockwise (possibly far beyond) one full circle in the corresponding direction of the ring piece convex projection 3b. During this process, all the U-shaped grooves and |_ / - shaped grooves 3a of the ring piece 3 will be successively aligned (it should be noted that even if all are aligned, it may not immediately correspond to the bolt 4) and still need to be rotated until it corresponds to the bolt 4. The bolt 4 will then drop into all the U-shaped grooves and |_ / - shaped grooves 3a of the ring piece 3 and separate from the lock body 1. Continuing to rotate, the lock will be opened. When the key 5 needs to be withdrawn, rotate it in the reverse direction. The left wall end face in the key through groove 5c directly pushes at least two adjacent ring piece convex projections 3b each with a |_ / - shaped groove 3a. The inclined surfaces on the same side can evenly lift the bolt 4 to connect with the lock body 1 and separate from the ring piece 3 to lock. At this time, the left wall end face of the key through groove 5c just touches the convex projections 3b of other ring pieces 3. Continue to pull and rotate while making them gradually align on one side of the left wall end face of the key through groove 5c. When the ring piece convex projections 3b are completely aligned and gathered on the left wall end face of the through groove 5c and axially aligned with the lock core bump 2b, and during this process, the force of pulling and rotating should be maintained at all times, then the key 5 can be withdrawn. If the key 5 has multi - turn locking, that is, before the key 5 rotates in the reverse direction, pull the key 5 slightly axially outward to make the corresponding ring piece convex projection 3b enter 5d to lock the corresponding convex projection 3b, then the key 5 can drive all the ring pieces 3 and the bolt 4 to rotate in the reverse direction. After multi - turn locking, the key 5 can be pushed in and the above operation can be repeated to withdraw the key 5.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows:

[0013] If the diameter of the lock core keyhole is 5 mm, the outer diameter of the ring piece 3 is 9 mm, the circumference of the key cylinder is 15.7 mm, the width of the key through groove 5c is 1.5 mm (the width of the convex projection 3b is 1.2 mm), the narrowest part of its straight side surface is 0.3 mm, and the two tooth patterns for locking are 1.9 mm longer than other tooth patterns, then 15.7 mm - 1.9 mm - 0.3 mm - 1.5 mm = 12 mm, that is, each key tooth pattern 5a can be set with an operating distance of approximately 12 mm.

[0014] Now, since it is a ring piece, it has an amplifying effect on the travel of the tooth pattern, that is, 9÷5 (circumference ratio) = 1.8 (times), which means the travel of the tooth pattern of the ring piece can be expanded by 1.8 times compared to that of the key tooth pattern, that is, 12mm×1.8 = 22.6mm; now, taking every 0.5mm as the minimum unit for setting the key points, 22.6mm÷0.5mm = approximately 45, and then calculating the number of key points that can be set on each ring piece based on 45 points. If 3 ring pieces are set to 22 pieces, then the key = 45 n , n = 22, and the key quantity is approximately 23478.7679 sextillion. That is to say, with 31500000 seconds in a year, decoding three times per second, and decoding for 100 trillion years, the probability of the lock being opened is 1 in 23478.7679! This is determined by the technical characteristics of the U-shaped groove on the outer end face of the ring piece and the overall structure of the lock.

[0015] It is precisely the application of the circumferential tooth pattern key that can undoubtedly achieve the ultimate goal of the U-shaped groove on the outer peripheral end face of the ring piece corresponding to the bolt. Despite the astronomical key quantity, each key on each ring piece is a real and undeniable existence, far exceeding any requirements for the security of the lock. The ring piece runs 360 degrees omnidirectionally, and the key itself has non-detectability. The structure is simple, and it can be said that it perfectly realizes the elimination of any possibility of technical opening.

Claims

1. A ring piece mechanical lock, comprising a lock body, a lock core, a ring piece, and a bolt, Characterized in that: A U-shaped groove and a |_ / -shaped groove are provided on the outer peripheral end face of the ring piece to correspondingly connect the bolt, and a convex projection is provided on the inner peripheral end face of the ring piece to connect with the key tooth pattern; The key that cooperates with the lock core is characterized in that: the key body is a cylinder, a concave opening is provided at the front of the end face of the cylinder and is connected to an axial through groove, and on the end face of the key cylinder connected to one side of the through groove, there are concave and convex tooth patterns arranged circumferentially corresponding to all the convex projections of the ring pieces.

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