阅读说明：本技术 一种机械锁的多级磁控机构 (Multistage magnetic control mechanism of mechanical lock ) 是由 余晓杰 陈凯 陈蓓蓓 邹晓巍 张朝伟 蒋旭东 胡乾普 张泽 周玉君 李旭 王坎 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种机械锁的多级磁控机构,其技术方案要点是包括有锁芯本体,锁芯本体包括有呈圆柱结构设置的锁孔和供钥匙嵌合并与锁孔连通的转动槽,锁芯本体内沿锁孔深度方向设置有若干磁控开关,磁控开关分别沿锁孔不同径向方向排列设置,相连磁控开关之间设置有加密夹角,当磁控开关与钥匙内磁铁一一同极对应时磁控开关呈解锁状态,锁芯本体内设置有用于复位磁控开关的复位部件,当钥匙离开锁芯本体时复位部件将磁控开关一一复位,锁芯本体的下端面连接有锁舌,锁舌远离锁孔位置设置,锁芯本体转动过程中锁舌被开启,该机械锁的多级磁控机构具有多极加密,加密程度高,不易被撬开的好处。(The invention discloses a multistage magnetic control mechanism of a mechanical lock, which is characterized by comprising a lock core body, wherein the lock core body comprises a lock hole and a rotating groove, the lock hole is arranged in a cylindrical structure, a key is embedded in the lock core body, the rotating groove is communicated with the lock hole, a plurality of magnetic control switches are arranged in the lock core body along the depth direction of the lock hole, the magnetic control switches are respectively arranged along different radial directions of the lock hole, encryption included angles are arranged between the connected magnetic control switches, the magnetic control switches are in an unlocking state when the magnetic control switches are in one-to-one homopolar correspondence with magnets in the key, a reset part for resetting the magnetic control switches is arranged in the lock core body, the reset parts reset the magnetic control switches one by one when the key leaves the lock core body, the lower end surface of the lock core body is connected with lock tongues, the lock tongues are arranged far, the encryption degree is high, and the anti-prying device has the advantage of being not easy to pry open.)

1. A multi-stage magnetic control mechanism of a mechanical lock is characterized by comprising a lock cylinder body (1), wherein the lock cylinder body (1) comprises a lock hole (11) which is of a cylindrical structure and a rotating groove (19) which is used for a key to be embedded and communicated with the lock hole (11), a plurality of magnetic control switches (2) are arranged in the lock cylinder body (1) along the depth direction of the lock hole (11), the magnetic control switches (2) are respectively arranged along different radial directions of the lock hole (11), an encryption included angle is arranged between every two adjacent magnetic control switches (2), the magnetic control switches (2) are in an unlocking state when the magnetic control switches (2) and magnets in the key are in one-to-one homopolar correspondence, a reset part (3) used for resetting the magnetic control switches (2) is arranged in the lock cylinder body (1), and the reset parts (3) reset the magnetic control switches (2) one by one when the key leaves the lock cylinder, the lock cylinder is characterized in that a lock tongue is connected to the lower end face of the lock cylinder body (1), the lock tongue is arranged far away from the lock hole (11), and the lock tongue is opened in the rotating process of the lock cylinder body (1).

2. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 1, wherein: the lock cylinder body (1) comprises a lock cylinder top cover (12), a lock cylinder bottom cover (13) and a plurality of lock cylinder adding layers arranged between the lock cylinder top cover (12) and the lock cylinder bottom cover (13), through holes for keys to pass through are formed in the lock cylinder top cover (12), the lock cylinder bottom cover (13) and the lock cylinder adding layers, the through holes are arranged one by one along the height direction of the lock cylinder body (1) to form the lock holes (11), the rotating grooves (19) are formed in the lock cylinder top cover (12), and the lock cylinder top cover (12) rotates along with the keys when the keys are embedded in the rotating grooves (19).

3. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 2, wherein: the lock cylinder adding layer comprises a first lock cylinder adding layer (14) and a second lock cylinder adding layer (15), a first lock cylinder groove (141) for partial embedding installation of a lock cylinder top cover (12) is formed in the first lock cylinder adding layer (14), a second lock cylinder groove (151) for partial embedding installation of the first lock cylinder adding layer (14) is formed in the second lock cylinder adding layer (15), a bottom cover groove (131) for partial embedding installation of the second lock cylinder adding layer (15) is formed in a lock cylinder bottom cover (13), the lock cylinder top cover (12) and the first lock cylinder adding layer (14) are rotatably connected, the first lock cylinder adding layer (14) and the second lock cylinder adding layer (15) are rotatably connected, the second lock cylinder adding layer (15) and the lock cylinder bottom cover (13) are rotatably connected, and the magnetic control switch (2) is provided with three groups and is respectively arranged on the lock cylinder top cover (12) and the first lock cylinder adding layer (14), The first lock cylinder adding layer (14) and the second lock cylinder adding layer (15), and the second lock cylinder adding layer (15) and the lock cylinder bottom cover (13).

4. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 3, wherein: the magnetic control switch (2) between the lock core top cover (12) and the first lock core adding layer (14) comprises a magnetic control portion (21) arranged on one end of the lock core top cover (12) facing the first lock core adding layer (14), a magnetic hole (22) arranged on the first lock core adding layer (14) and used for being connected with the magnetic control portion (21) in an inserting mode, and a through hole (23) arranged on the lock core top cover (12) and used for enabling the magnetic control portion (21) to extend out of the magnetic hole (22), and when the magnetic control portion (21) and magnets in a key repel each other in the same polarity, the magnetic control portion (21) is connected into the magnetic hole (22) in an inserting mode to complete linkage combination of the lock core top cover (12) and the first lock core adding layer (.

5. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 4, wherein: the magnetic control part (21) comprises a bar magnet (211) matched with the magnet of the key and an inserting block (212) used for inserting the magnetic hole (22), the inserting block (212) is arranged in a convex structure, and an inserting groove (2121) for embedding the bar magnet (211) is formed in the larger end face of the inserting block (212).

6. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 5, wherein: reset unit (3) are for the cover locate plug block (212) port less one on reset spring (31), reset spring (31)'s bore size is greater than the footpath length dimension of perforation (23), reset spring (31)'s one end and plug block (212) fixed connection, the other end and perforation (23) surrounding side wall fixed connection.

7. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 6, wherein: each group of magnetic control switches (2) comprises a first switch (24) and a second switch (25), the first switch (24) and the second switch (25) are symmetrically arranged along the central axis of the lock hole (11), and the bar magnets (211) in the first switch (24) and the second switch (25) are arranged in a heteropolar manner towards one end of the lock hole (11).

8. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 7, wherein: a first switch (24) in the same group of magnetic control switches (2) is positioned above a second switch (25), and a dislocation height is arranged between the first switch (24) and the second switch (25).

9. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 2, wherein: the lock core top cover (12) and the lock core are provided with an arc-shaped convex block (16) at the end facing downwards, and an arc-shaped groove (17) for the arc-shaped convex block (16) to be rotatably embedded is formed at the end facing upwards of the lock core adding layer and the lock core bottom cover (13).

10. The multi-stage magnetic control mechanism of a mechanical lock as claimed in claim 2, wherein: and one end of the lock cylinder bottom cover (13) far away from the lock cylinder top cover (12) is fixedly connected with a linkage gear (18).

Technical Field

The invention relates to a well cover lock, in particular to a multistage magnetic control mechanism of a mechanical lock.

Background

The well lid is a closed object which is led to the top of an access of an underground facility, and the well lid is required to be installed in places where public facilities such as tap water, telecommunication, electric power, gas, heat, fire protection, sanitation and the like are installed. Especially along with the constantly healthy and perfect of mobile network and the stability of network constantly rise, it is also along with increasing to remove own property right pipeline length, along with removing the increase of own property right pipeline length, the market demand of well lid in urban planning and road construction is also constantly increasing, consequently the maintenance problem that faces is also more and more, like losing of well lid, other operators occupy the mobile pipeline and put the cable scheduling problem privately, cause the intraductal cable to walk the line irregularly, the resource occupation is unclear, the well lid is lost and is brought the potential safety hazard for passerby or blind person, and this type of problem is difficult to stop.

The main reason for causing the well lid to lose easily or be opened at will is caused by the self structure of well lid, and well lid is made by metal material usually, is provided with one or more on the well lid and opens the hole, and the well lid when being convenient for the well lid installation and need maintain downhole equipment is opened and is used, and this has also become the well lid and has easily lost, the easy root cause of opening at will. The traditional mode of opening the well lid is, open the well lid lock through the well lid key earlier, and the rethread well hook colludes the hole of opening on the well lid and opens the well lid. The well lid key for opening the well lid lock is composed of a key rod and a key head formed by bending the key rod once, and then the cross section of the key head is processed, so that the well lid lock is conveniently opened. The simpler and easier private well hook is directly manufactured by folding one end of a metal rod into a hook shape, and although the structure is simple, the well cover can be opened through the well cover opening hole easily.

To above-mentioned circumstances, in order to stop to open the condition that the well lid leads to the well lid to lose and the well lid is opened privately through the well lid opening hole, need design prevent opening, the well lid lock and the supporting well lid key of theftproof.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a multi-stage magnetic control mechanism of a mechanical lock, which has the advantages of multi-stage encryption, high encryption degree and difficulty in being pried open.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multistage magnetic control mechanism of mechanical lock, including the lock core body, the lock core body is including the lockhole that is the cylinder structure setting and the rotation groove that supplies the key to inlay and communicate with the lockhole, this internal edge lockhole depth direction of following of lock core is provided with a plurality of magnetic control switches, the magnetic control switch is arranged along the different radial direction of lockhole respectively and is set up, and is adjacent be provided with the encryption contained angle between the magnetic control switch, the magnetic control switch is the unblock state when magnetic control switch and the key magnet homopolar one-to-one when corresponding, this internal reset part that is used for the magnetic control switch that resets that is provided with of lock core, reset part resets the magnetic control switch one by one when the key leaves the lock core body, the lower terminal surface of lock core body is connected with the spring bolt, the.

The invention is further configured to: the lock core body comprises a lock core top cover, a lock core bottom cover and a plurality of lock core adding layers arranged between the lock core top cover and the lock core bottom cover, through holes for keys to pass through are formed in the lock core top cover, the lock core bottom cover and the lock core adding layers, the through holes are arranged one by one in the height direction of the lock core body to form the lock holes, the rotating grooves are formed in the lock core top cover, and the lock core top cover rotates along with the keys when the keys are embedded with the rotating grooves.

The invention is further configured to: the lock core adds the layer including first lock core with the layer and second lock core adds the layer, be provided with the first lock core recess that supplies lock core lamina part embedding installation on the first lock core adds the layer, be provided with the second lock core recess that supplies first lock core to add the partial embedding installation of layer on the second lock core adds the layer, be provided with the bottom recess that supplies second lock core to add the partial embedding installation of layer on the lock core bottom, the lock core top cap is connected the setting with first lock core adds the layer rotation, first lock core adds the layer and is connected the setting with second lock core adds the layer rotation, second lock core adds the layer and is connected the setting with lock core bottom rotation, magnetic control switch is provided with three groups and sets up respectively on lock core top cap and first lock core add the layer, on first lock core adds layer and second lock core and adds the layer and on the lock core bottom.

The invention is further configured to: the magnetic control switch between the lock core top cover and the first lock core adding layer comprises a magnetic control portion arranged on one end, facing the first lock core adding layer, of the lock core top cover, a magnetic hole formed in the first lock core adding layer and used for the magnetic control portion to be connected in an inserting mode, and a through hole formed in the lock core top cover and used for the magnetic control portion to stretch out of the magnetic hole, when the magnetic control portion and the magnet in the key repel each other in the same polarity, the magnetic control portion is connected in the magnetic hole in an inserting mode, and the lock core top cover and the first lock core adding.

The invention is further configured to: the magnetic control portion is including carrying out the bar magnet of cooperation operation and the grafting piece that is used for pegging graft magnetic bore with the magnet of key, the grafting piece is "protruding" structure setting, the great one end of grafting piece terminal surface is provided with the grafting recess that supplies the bar magnet embedding.

The invention is further configured to: the reset component is a reset spring sleeved on one end of the plug-in block with a smaller port, the caliber size of the reset spring is larger than the diameter length size of the through hole, one end of the reset spring is fixedly connected with the plug-in block, and the other end of the reset spring is fixedly connected with the side wall around the through hole.

The invention is further configured to: each group of magnetic control switches comprises a first switch and a second switch, the first switch and the second switch are symmetrically arranged along the axis of the lock hole, and the bar magnets in the first switch and the second switch are arranged in a heteropolar mode towards one end of the lock hole.

The invention is further configured to: the first switch in the same group of magnetic control switches is positioned above the second switch, and a dislocation height is arranged between the first switch and the second switch.

The invention is further configured to: the lock core top cover and the lock core are provided with arc-shaped convex blocks at one end downwards, and arc-shaped grooves for the arc-shaped convex blocks to rotate and be embedded are formed at one end upwards of the lock core adding layer and the lock core bottom cover.

The invention is further configured to: and one end of the lock cylinder bottom cover, which is far away from the lock cylinder top cover, is fixedly connected with a linkage gear.

In conclusion, the invention has the following beneficial effects: the spring bolt is kept away from the lockhole position and is set up, can avoid the thief to unblank through the direct spring bolt of prying of steel wire like this, only can unblank when lock core body pivoted condition.

The magnetic control switches in different directions mean that magnetic control keys in corresponding directions are needed, so that the magnetic control switches in various angles are not used for achieving a perfect encryption degree, and the magnetic control switches are not easy to crack, so that the condition that the well cover is illegally opened is avoided. For example: every 10 degrees is taken as an encryption angle, the encryption condition of each group of magnetic control switches is 36, when N groups of magnetic control switches exist, the encryption series has an N power of 36, N is 2, and the encryption series is 1296; n is 3, and the number of encryption stages is 46656; n is 4, the number of encryption stages is 1679616; and the height position of the magnetic control switch is matched, so that the encryption stage number is increased by geometric times, and the method has the characteristic of high encryption degree.

Drawings

FIG. 1 is an exploded view of a lock cylinder body;

FIG. 2 is a cross-sectional view of the lock cylinder body;

fig. 3 is a cross-sectional view of a magnetically controlled switch between a lock cylinder top cover and a first lock cylinder plus layer.

Reference numerals: 1. a lock cylinder body; 11. a lock hole; 12. a lock cylinder top cover; 13. a lock cylinder bottom cover; 131. a bottom cover groove; 14. a first lock core additive layer; 141. a first lock cylinder groove; 15. adding a layer on the second lock cylinder; 151. a second lock cylinder recess; 16. an arc-shaped bump; 17. an arc-shaped groove; 18. a linkage gear; 19. a rotating groove; 2. a magnetic control switch; 21. a magnetic control section; 211. a bar magnet; 212. an insertion block; 2121. inserting grooves; 22. a magnetic aperture; 23. perforating; 24. a first switch; 25. a second switch; 3. a reset component; 31. a return spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 3, in order to achieve the above object, the present invention provides the following technical solutions: a multi-stage magnetic control mechanism of a mechanical lock comprises a lock core body 1, wherein the lock core body 1 comprises a lock hole 11 which is arranged in a cylindrical structure and a rotating groove 19 which is used for a key to be embedded and communicated with the lock hole 11, a plurality of magnetic control switches 2 are arranged in the lock core body 1 along the depth direction of the lock hole 11, the magnetic control switches 2 are respectively arranged along different radial directions of the lock hole 11, an encryption included angle is arranged between every two adjacent magnetic control switches 2, when the magnetic control switch 2 corresponds to the magnets in the key in the same polarity, the magnetic control switch 2 is in an unlocking state, a reset component 3 for resetting the magnetic control switch 2 is arranged in the lock core body 1, when the key leaves the lock cylinder body 1, the reset components 3 reset the magnetic control switches 2 one by one, the lower end surface of the lock cylinder body 1 is connected with the lock tongues, the depth dimension of the lock hole 11 is smaller than the height dimension of the lock cylinder body 1, and the lock tongues are opened in the rotation process of the lock cylinder body 1.

The design of cylindric lockhole 11 is compared with prior art, because the well lid exposes externally throughout the year, has the drainage effect moreover, the condition of ponding often can appear during prior art, present rainwater is the faintly acid, soak the lock core for a long time, lead to lock core sensitivity to reduce, the life-span reduces, cause the product to scrap in advance to cause unnecessary extravagant, cylindric lockhole 11 is favorable to the drainage more, does not have the structure of buckling among the prior art, thereby can avoid the ponding condition to take place, guarantee product life.

The spring bolt is kept away from 11 position settings of lockhole, can avoid the thief to directly prize the spring bolt through the steel wire like this and unblank, so only can unblank when the 1 pivoted condition of lock core body, have the benefit that is difficult for being prized.

The magnetic control switches 2 in different directions mean that magnetic control keys in corresponding directions are needed, so that the magnetic control switches 2 in various angles are not used for achieving a perfect encryption degree, and are not easy to crack, and the condition that the well cover is illegally opened is avoided. For example: every 10 degrees is taken as an encryption angle, the encryption condition of each group of magnetic control switches 2 is 36, when N groups of magnetic control switches 2 exist, the encryption series has an N power of 36, N is 2, and the encryption series is 1296; n is 3, and the number of encryption stages is 46656; n is 4, the number of encryption stages is 1679616; and the height position of the magnetic control switch 2 is matched, the encryption stage number is increased by geometric times, and the feature of high encryption degree is achieved.

According to the using method, a correct key is inserted into the lock hole 11, the key is provided with the rotating block which is embedded with the rotating groove 19, the magnetic control switches 2 are opened in a one-to-one correspondence mode through rotation, then the key is rotated, the lock cylinder body 1 is integrally rotated, the lock tongues on the lower end face of the lock cylinder body 1 are opened, and the well cover is unlocked.

The lock cylinder body 1 comprises a lock cylinder top cover 12, a lock cylinder bottom cover 13 and a plurality of lock cylinder adding layers arranged between the lock cylinder top cover 12 and the lock cylinder bottom cover 13, through holes for keys to pass through are formed in the lock cylinder top cover 12, the lock cylinder bottom cover 13 and the lock cylinder adding layers, the through holes are arranged one by one in the height direction of the lock cylinder body 1 to form lock holes 11, a rotating groove 19 is formed in the lock cylinder top cover 12, and the lock cylinder top cover 12 rotates along with the keys when the keys are embedded with the rotating groove 19. Through the lock core of a plurality of quantity adds the layer, improves encryption degree, works as and every layer lock core adds the layer and all is provided with the through-hole to make the key can add the layer to the lock core on every layer and play the effect of magnetic control unblock. Through turning block and the gomphosis of turning groove 19 on the key, key rotation in-process lock core top cap 12 rotates along with it, adds the layer linkage until lock core top cap 12 passes through magnetic control switch 2 and the lock core of next layer, and the key just can drive lock core top cap 12 simultaneously and rather than the lock core of linkage and rotate, until all magnetic control switch 2 are by the corresponding unblock, the key can drive lock core body 1 and rotate for the well lid is opened.

The lock cylinder adds the layer including first lock cylinder with 14 and second lock cylinder with 15, be provided with the first lock cylinder recess 141 that supplies lock cylinder top cap 12 part embedding installation on the first lock cylinder with 14, be provided with the second lock cylinder recess 151 that supplies first lock cylinder with 14 part embedding installations on the second lock cylinder with 15, be provided with the bottom recess 131 that supplies second lock cylinder with 15 part embedding installations on the lock cylinder bottom 13, lock cylinder top cap 12 adds the layer 14 with first lock cylinder and rotates to be connected the setting, first lock cylinder adds layer 14 and rotates with second lock cylinder with 15 and is connected the setting, second lock cylinder adds layer 15 and rotates with lock cylinder bottom 13 and is connected the setting, magnetic control switch 2 is provided with three groups and sets up respectively on lock cylinder top cap 12 and first lock cylinder with 14, first lock cylinder adds on layer 14 and second lock cylinder with 15, and second lock cylinder with 15 and lock cylinder 13 on the layer.

The implementation method of the design is as follows: when a correct key is inserted into the lock hole 11, the correct key initially corresponds to the part of the magnetic control switch 2 on the lock cylinder top cover 12, then the key is rotated to enable the part of the magnetic control switch 2 in the lock cylinder top cover 12 to correspond to the other part of the magnetic control switch 2 in the first lock cylinder additional layer 14, so that the lock cylinder top cover 12 is in linkage combination with the first lock cylinder additional layer 14, the key is rotated to drive the lock cylinder top cover 12 to rotate, the lock cylinder top cover 12 drives the first lock cylinder additional layer 14 to rotate, and similarly, until the lock cylinder top cover 12 drives the lock cylinder bottom cover 13 to rotate, so that the lock tongue on the lock cylinder bottom cover 13 rotates to perform unlocking operation, however, the encryption complexity degree depends on the number of layers of the lock cylinder additional layers, the number of encryption stages is increased, each 10-degree is used as an encryption angle, the encryption condition of each layer is 36, the encryption degree of the three groups of magnetic control switches 2 is 36, the encryption condition is more diversified, thereby ensuring that the encryption condition is not easy to crack. Therefore, two lock cylinder layers are selected, the product cost is guaranteed to be in a reasonable range as far as possible under the condition of sufficient encryption series, and meanwhile, the operation is also guaranteed to be convenient.

The magnetic control switch 2 between the lock core top cover 12 and the first lock core adding layer 14 comprises a magnetic control part 21 arranged on one end of the lock core top cover 12 facing the first lock core adding layer 14, a magnetic hole 22 arranged on the first lock core adding layer 14 and used for the magnetic control part 21 to be inserted, and a through hole 23 arranged on the lock core top cover 12 and used for the magnetic control part 21 to extend out of the magnetic hole 22, wherein when the same poles of magnets in the magnetic control part 21 and a key repel each other, the magnetic control part 21 is inserted into the magnetic hole 22 to complete the linkage combination of the lock core top cover 12 and the first lock core adding layer 14. When the key corresponds with magnetic switch 2 homopolar, bar magnet 211 passes perforation 23 and inserts magnetic bore 22 when pushing away plug-in block 212 compression reset spring 31 under the effect of repulsion force, the top cap adds layer 14 with first lock core this moment and combines together, can drive first lock core when lock core top cap 12 pivoted and add layer 14 and rotate, and in the same way, add layer 15 with the second lock core when first lock core, second lock core adds layer 15 and all combines together through corresponding magnetic switch 2 with lock core bottom lid 13, finally reach whole linkage pivoted effect, bottom lock core 13 rotates and makes the spring bolt opened, the well lid is opened. The design has high encryption degree, and unlocking is performed from top to bottom, but when the magnetic poles of one layer of keys do not correspond to the magnetic pole switches in the lock cylinder body 1, the lock cylinder bottom cover 13 cannot be rotated, so that unlocking cannot be performed.

The magnetic control part 21 comprises a bar magnet 211 matched with the magnet of the key and an insertion block 212 for inserting the magnetic hole 22, the insertion block 212 is arranged in a convex structure, and an insertion groove 2121 for inserting the bar magnet 211 is arranged at the larger end of the end face of the insertion block 212. The magnetic control part 21 comprises the bar magnet 211 and the plug block 212, and has the advantages that: 1. the plug-in block 212 is not a magnetic object, and is made of a material which is more durable, so that the service life of the device is guaranteed; 2. the insertion block 212 has a magnetic isolation function to prevent the bar magnet 211 from affecting the return spring 31 described below; 3. the bar magnet 211 has a stable magnetic region and is inexpensive. The design of the insertion groove 2121 increases the contact area between the bar magnet 211 and the insertion block 212, thereby ensuring that the bar magnet 211 can stably push the insertion block 212.

The reset component 3 is a reset spring 31 sleeved on the smaller end of the port of the insertion block 212, the caliber size of the reset spring 31 is larger than the caliber length size of the through hole 23, one end of the reset spring 31 is fixedly connected with the insertion block 212, and the other end of the reset spring is fixedly connected with the peripheral side wall of the through hole 23. When the key corresponds to the same pole of the magnetic switch 2, the bar magnet 211 pushes the plug-in block 212 to compress the reset spring 31 and simultaneously inserts into the magnetic hole 22 through the through hole 23 under the action of the repulsive force, when the key is pulled out, the repulsive force to the bar magnet 211 disappears, the plug-in block 212 is separated from the magnetic hole 22 under the action of the elastic force of the reset spring 31, and the linkage effect is cancelled; the reset component 3 selects the reset spring 31, and has the advantages of stable reset spring 31, convenient spring coefficient selection, low cost and long service life.

Each group of magnetic control switches 2 comprises a first switch 24 and a second switch 25, the first switch 24 and the second switch 25 are symmetrically arranged along the central axis of the lock hole 11, and the bar magnets 211 in the first switch 24 and the second switch 25 are arranged in a heteropolar manner towards one end of the lock hole 11. The magnetic control switches 2 on the same layer comprise a first switch 24 and a second switch 25 which can respectively correspond to the N pole and the S pole of the key, when the two switches are both in an unlocking state, the next layer can be driven to rotate more easily by rotating the key, and the magnetic control switches can be rotated more easily relative to only one switch so as to avoid the situation that the magnetic control switches cannot be opened. Moreover, the first switch 24 and the second switch 25 are symmetrically arranged along the axial line of the lock hole 11, and when the key is inserted and rotated to the correct position, the acting forces on the first switch 24 and the second switch 25 are consistent with each other, so that the first switch 24 and the second switch 25 on two sides can be stably driven to rotate in the key rotating process.

The first switch 24 in the same group of magnetic control switches 2 is positioned above the second switch 25, and a dislocation height is arranged between the first switch 24 and the second switch 25. The design has the advantage that each magnetic hole 22 is only used for inserting the corresponding magnetic control part 21, even if another magnetic control part 21 cannot be inserted into the non-corresponding magnetic hole 22 in the same group of magnetic control switches 2, only one unlocking condition exists under the condition of having the first switch 24 and the second switch 25.

The downward ends of the lock cylinder top cover 12 and the lock cylinder top cover are provided with arc-shaped convex blocks 16, and the upward ends of the lock cylinder top cover and the lock cylinder bottom cover 13 are provided with arc-shaped grooves 17 for the arc-shaped convex blocks 16 to be embedded in a rotating mode. The arc-shaped convex block 16 and the arc-shaped groove 17 have the following effects: for example, when the cylinder top cover 12 is rotated with the key, when the arc-shaped protrusion 16 moves to the position of the arc-shaped groove 17, the user holding the key may have obvious setback feeling, as shown in fig. 1, when the cylinder is laminated into two layers, each setback feeling is one alignment, when three setbacks occur, it means that if the key is correct, the lock can be unlocked, and if the lock cannot be unlocked, it means that the key is wrong.

And one end of the lock cylinder bottom cover 13, which is far away from the lock cylinder top cover 12, is fixedly connected with a linkage gear 18. The design of this linkage gear 18 can link with the outer structure of this mechanical lock, can design into two lock structures, for example mechanical lock adds the electronic lock and passes through linkage gear 18 and connect, can all can play the drive effect, the maneuverability of improvement to the latch through mechanical lock or electronic lock. There is another unlocking method even when a special situation occurs, when there is a lock that cannot be unlocked. The lock tongue can be set to a position farther from the lock hole 11 by the interlocking gear 18, thereby preventing a thief from picking the lock.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.