CN111608487B

CN111608487B - Anti-technical lock cylinder of card key

Info

Publication number: CN111608487B
Application number: CN202010345897.7A
Authority: CN
Inventors: 殷卫平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-06-04
Anticipated expiration: 2040-04-27
Also published as: CN111608487A

Abstract

The invention discloses an anti-technical unlocking lock core of a card key, which relates to the technical field of mechanical anti-theft locks and comprises two pin tumbler nests which can move mutually and are correspondingly provided with array pins, the card key which can be pressed on the pin tumbler nests, an upper cover and the like. The different thickness of the card key used as the key and the position corresponding to the marble determines whether the marble is aligned between two marble nests, thereby achieving the purpose of preventing unlocking or unlocking. The relatively more marbles arranged in an array have huge coding amount, and the state of a certain marble can hardly be known due to the shielding of the more marbles and the blocking of a protection wall, so that the marble has very strong technical unlocking resistance. The invention is suitable for lock bodies of various doors and cabinets, is structurally very suitable for being matched with an advanced electronic lock of a security door, and the card type key better meets the carrying requirements of modern people.

Description

Anti-technical lock cylinder of card key

Technical Field

The embodiment of the invention relates to the technical field of mechanical anti-theft locks, in particular to an anti-technical lock core of a card key.

Background

The lockset generally comprises a lock body, a lock core and a key, wherein the correct key is inserted into the lock core, so that each marble on the lock core does not block the lock core, a lock tongue is stirred to unlock the lockset when the lock core is rotated, an incorrect key cannot be properly matched with each marble, one or more marbles form blocking between the lock core and the lock body, and the lock core cannot be rotated to unlock the lockset.

The existing lock core and key have the following problems:

1. the technical opening resistance is poor: the technical unlocking means unlocking by using a certain tool without a key, and the principle is that the tool is extended into a lock cylinder to press all pins one by one and slightly rotate the pins in a matching manner, so that each pin is detected to be unlocked without being blocked and positioned at the position. Another reason for the poor technical unlocking resistance is that the arrangement structure of the marbles of the existing lock core determines that only more than ten marbles can be used at most, so that the number of usable secret keys is relatively small, and the difficulty in detecting and controlling the marbles during technical unlocking is not high enough.

2. The key is inconvenient to carry: the key of the existing mechanical lock core is a key carrying tool and also a power source for unlocking, and is not beneficial to use and carrying when being too large or too small. A single carry is easily lost and multiple carries must add key fobs to form a larger string.

Disclosure of Invention

Therefore, the embodiment of the invention provides the anti-technical unlocking lock cylinder of the card key, which structurally enhances the anti-technical unlocking capability.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: according to the embodiment of the invention, the anti-technical unlocking lock core of the card key comprises a lower pin tumbler nest and an upper pin tumbler nest, wherein an upper cover is arranged outside the upper pin tumbler nest; a plurality of lower marble holes are arranged on the lower marble nest at intervals, a lower marble is arranged in each lower marble hole in a sliding manner, a marble spring is arranged in each lower marble hole, one end of each marble spring is abutted against the bottom of the lower marble hole, and the other end of each marble spring is abutted against the end part of the lower marble;

the upper pin tumbler nest is provided with penetrating upper pin tumbler holes, the upper pin tumbler holes correspond to the lower pin tumbler holes one by one, and upper pin tumblers with different lengths are arranged in each upper pin tumbler hole in a sliding manner;

a key slot for inserting a card key is formed in the upper cover along a direction vertical to the length of the upper marble, a separation plate is integrally formed on the upper cover and positioned between the key slot and the lower marble nest, and a separation plate marble hole for the upper marble to penetrate out is formed in the separation plate;

a driving device for controlling the upper cover to move towards one side close to the lower pin tumbler nest and controlling the lower pin tumbler nest to move along the direction vertical to the lower pin tumbler hole is arranged on one side of the lower pin tumbler nest away from the upper pin tumbler nest;

a protection wall is integrally formed on one side, close to the partition plate, of the upper pin tumbler nest, a hollow hole of the protection wall is formed in the partition plate, and when the upper cover moves towards one side, close to the lower pin tumbler nest, the protection wall penetrates through the hollow hole of the protection wall and the card key and then abuts against the side wall of the key slot parallel to the plane of the partition plate; and the protection wall is positioned between the key slot inlet and the upper marble.

According to the technical scheme, through the arranged protection wall, when the upper cover is driven to move downwards by the driving device, the protection wall penetrates through a hollow hole of the protection wall and abuts against the upper wall of the key slot, the protection wall separates an inlet of the key slot from the upper marbles, the upper marbles cannot be directly observed from the outer side through the key socket, when a special tool is used for detecting, the special tool cannot directly penetrate through the inlet of the key socket to detect the upper marbles, the upper marbles can be detected only after the protection wall is required to be bypassed, the marbles can be distributed in a whole row or randomly, in the detection process, the special tool is not clear to contact with the upper marbles along the way, the difficulty in detecting the upper marbles is greatly enhanced, and therefore the technical unlocking resistance is greatly improved.

Meanwhile, when a card key is not inserted for detection, after the handle shaft is rotated, the upper cover moves downwards under the action of the driving device, the combined surface of the upper marble and the lower marble can be positioned at the upper side or aligned with the contact surface of the upper marble nest and the lower marble nest, and after a special tool is used for detecting the upper marble, the combined surface of the upper marble and the lower marble can be positioned at the upper side, aligned with or lower side of the contact surface of the upper marble nest and the lower marble nest, and meanwhile, the technology is not opened meaningfully because the contact of the marble or the marbles is not clear along the way.

Further, the driving device comprises an elastic component arranged on the lower pin tumbler nest and a driving component arranged at the handle shaft; the elastic component drives the lower ball nest to move along the direction vertical to the lower ball hole;

the driving component drives the upper cover to move along the length direction of the upper bullet hole and controls whether the lower bullet nest moves along the direction vertical to the lower bullet hole.

Through the technical scheme, when the lock is unlocked, after a correct card key is inserted into the key slot, the handle shaft is rotated, the driving assembly drives the upper cover to move downwards, so that the upper pin tumbler and the lower pin tumbler are aligned to the combined surface of the upper pin tumbler nest and the lower pin tumbler nest, the upper pin tumbler and the lower pin tumbler are used for removing the limit between the upper pin tumbler nest and the lower pin tumbler nest, and the elastic assembly drives the lower pin tumbler nest to move along the direction vertical to the lower middle hole.

Furthermore, an upper cover marble hole which is in one-to-one correspondence with the upper marble hole is formed in one side wall, which is parallel to the isolation plate, in the key slot, when the upper marbles are aligned with the lower marbles one by one, and the upper cover is positioned at the topmost end, one end, which is far away from the lower marbles, of the upper marbles is not higher than the isolation plate; when the upper cover moves downwards, the upper marble passes through the card key and abuts against the marble hole of the upper cover under the pressure of the marble spring.

Through above-mentioned technical scheme, through the upper cover marble hole that sets up, when rotating the handle axle, if there is not the card key in the key slot, all last marbles all butt inside the upper cover marble hole under the effect of marble spring, when using specialized tool to visit the last marble, because go up the marble tip and be located upper cover marble hole, so it can not directly be visited upper cover marble tip to exert pressure, leads to visiting the degree of difficulty and strengthens greatly, and anti technical opening ability promotes greatly.

Furthermore, steps are respectively arranged on the upper bullet hole and the upper bullet, the cross sectional area of one end, close to the lower bullet hole, of the upper bullet hole and the upper bullet relative to the steps is larger, and the cross sectional area of one end, close to the partition plate, of the upper bullet hole and the upper bullet is smaller.

Through the technical scheme, the upper marble can be limited through the arranged steps, and under the action of the marble spring, the end part of the upper marble, which is far away from the marble spring, is kept parallel and level on the premise of no card key.

Furthermore, a long groove is formed in the lower pin tumbler nest along the transmission direction, the elastic component comprises a positioning piece which is arranged in the long groove and is used for being fixedly connected with the lock body, and an action spring which is positioned in the long groove and is in a compressed state, one end of the action spring abuts against the bottom of the long groove, and the other end of the action spring abuts against the positioning piece; when the driving component cancels the limitation of the lower marble nest and all the upper marbles and the lower marbles are aligned to the combined surface of the upper marble nest and the lower marble nest, the lower marble nest moves for a certain distance under the action of the action spring.

Through the technical scheme, the positioning piece is fixed in position, and the lower pin tumbler nest moves under the elastic action of the action spring when the lower pin tumbler nest is not limited.

Furthermore, the driving assembly comprises an eccentric wheel arranged on the handle shaft, a protruding block which is fixed on the lower pin tumbler nest and is positioned on one side of the lower pin tumbler nest far away from the upper pin tumbler nest, and a contact point arranged on one side of the handle shaft far away from the lower pin tumbler nest, and a connecting piece is connected between the contact point and the upper cover;

when the eccentric wheel is in rotary abutting connection with the protruding block, the protruding block drives the lower pin tumbler nest to move to an initial position by overcoming the elastic action of the action spring, and when the eccentric wheel is in rotary abutting connection with the contact, the connecting piece drives the upper cover to move downwards;

when the eccentric wheel rotates forwards, the eccentric wheel continues to rotate after the eccentric wheel presses the contact point, and the eccentric wheel is separated from the protruding block;

when the eccentric wheel rotates reversely, the eccentric wheel is firstly in compression joint with the protruding block, the eccentric wheel continues to rotate, and the eccentric wheel is separated from the contact.

Further, the protection wall is in the shape of an incomplete annular protrusion.

Through above-mentioned technical scheme, set up the protection wall into incomplete annular protruding shape, the protection wall can be protected key slot entry one side and adjacent both sides limit, when carrying out the technique and opening, the detection instrument need walk around the protection wall, gets into the protection wall inboard by protection wall open position and detects the bullet on, and specialized tool is not the linear type and detects the bullet on, and the protection wall resists the detection ability and promotes greatly.

Furthermore, a protection groove for a protection wall to pass through is formed in the card key, a through hole or a blind hole with different depths is formed in the position, corresponding to the upper marble, on the inner side plane of the protection groove, and the different upper marbles pass through the through hole and abut against the inside of the blind hole or the surface of the card key.

Through above-mentioned technical scheme, through the card key that sets up, can use with the lock core cooperation, simultaneously, this card key can be placed inside the wallet with the bank card is the same, for the key among the prior art, no matter carry alone or carry in a large number and all lose easily, it is more convenient to carry simultaneously.

The embodiment of the invention has the following advantages:

through the protection wall that sets up, when using drive arrangement to drive the upper cover and move down, the protection wall passes protection wall fretwork hole, the butt is in key slot upper wall department, the protection wall separates key slot entry and last pellet shot from a slingshot, can not direct observation go up the pellet shot from a slingshot by the outside through key socket, when using specialized tool to visit, specialized tool can't directly pass key socket entry and visit the pellet shot from a slingshot, only can visit the pellet shot from a slingshot after need walking around the protection wall, it is relatively great to visit the degree of difficulty.

The number of the upper marbles and the lower marbles is relatively large, meanwhile, the upper marbles are distributed randomly or in an array mode in a plane, in the detection process, a special tool is not clear to contact with the upper marbles along the way, the upper marbles are shielded mutually and blocked by a protection wall, the state of a certain marble can hardly be detected, and the anti-technical unlocking capacity is very strong.

Through the upper cover marble hole that sets up, when rotating the handle axle, if there is not the card key in the key slot, all last marbles all butt inside upper cover marble hole under the effect of marble spring, when using specialized tool to go up the marble and visit, because go up the marble tip and be located upper cover marble hole, so visit the instrument and can not directly exert pressure to upper cover marble tip and visit, lead to the probing degree of difficulty to strengthen greatly, anti technical opening ability promotes greatly.

Through the card key that sets up, can use with the lock core cooperation, simultaneously, this card key can be placed inside the wallet with bank card is the same, for the key among the prior art, no matter carry alone or carry in a large number and all lose not easily, it is more convenient to carry simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a schematic overall structure diagram of an anti-theft lock cylinder of a card key according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of the anti-tamper lock cylinder of the card key provided in the embodiment of the invention, which is projected along the direction a-a in fig. 1;

FIG. 3 is a cross-sectional view of the anti-tamper lock cylinder of a card key according to an embodiment of the present invention, which is shown in the direction B-B in FIG. 1;

FIG. 4 is a cross-sectional view of the anti-tamper lock cylinder of a card key according to an embodiment of the present invention, as seen along the line C-C in FIG. 1;

fig. 5 is a schematic view of a protrusion driving device in an anti-theft lock cylinder of a card key according to an embodiment of the present invention;

FIG. 6 is a side cross-sectional view of an anti-tamper lock cylinder of a card key according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a card key provided by an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a card key according to an embodiment of the present invention, taken along line D-D of FIG. 6;

fig. 9 is a schematic view of a lock body using the lock cylinder according to an embodiment of the present invention;

figure 10 is a schematic view of a protruding linkage assembly in a lock body according to an embodiment of the present invention.

In the figure: 1. a lower marble nest; 11. a lower bullet hole; 12. discharging the marble; 13. a spring; 14. a long groove; 2. mounting a marble nest; 21. an upper bullet hole; 211. a step; 22. mounting a marble; 23. a protection wall; 24. positioning holes; 25. a positioning spring; 26. positioning the marble; 3. an upper cover; 31. a key slot; 32. a separator plate; 321. a spacer plate spring hole; 322. hollow holes of the protection wall; 33. an upper cover bullet hole; 4. a drive device; 41. an elastic component; 411. a positioning member; 412. an action spring; 42. a drive assembly; 421. an eccentric wheel; 422. a protruding block; 423. a contact; 424. a connecting member; 5. a handle shaft; 6. a card key; 61. a protective bath; 62. a through hole; 63. blind holes; 7. a frame body; 71. a latch bolt; 72. a linkage assembly; 721. a first connecting plate; 7211. a first clamping block; 7212. a bevel; 722. a second connecting plate; 7221. a second clamping block; 723. a power plate; 724. a drive plate; 7241. a kidney-shaped groove; 7242. and (7) connecting the shafts.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

An anti-theft lock core of a card key is shown in figures 1 to 10 and comprises a lower pin tumbler nest 1 and an upper pin tumbler nest 2, wherein an upper cover 3 is arranged at the outer sides of the lower pin tumbler nest 1 and the upper pin tumbler nest 2; the upper cover 3 wraps the upper pin tumbler nest 2. A plurality of lower marble holes 11 are arranged on the lower marble nest 1 at intervals, a lower marble 12 is arranged in each lower marble hole 11 in a sliding manner, a marble spring 13 is arranged in each lower marble hole 11, one end of the marble spring 13 is abutted against the bottom of the lower marble hole 11, and the other end of the marble spring 13 is abutted against the end part of the lower marble 12; the upper pin tumbler nest 2 is provided with upper pin tumbler holes 21 which penetrate through the upper pin tumbler nest, the upper pin tumbler holes 21 correspond to the lower pin tumbler holes 11 one by one, and upper pin tumblers 22 with different lengths are arranged in each upper pin tumbler hole 21 in a sliding mode. A key slot 31 into which the card key 6 is inserted is opened in the upper cover 3 in a direction perpendicular to the length of the upper pin 22.

A separation plate 32 is formed between the key slot 31 and the lower marble nest 1, and a separation plate marble hole 321 for the upper marble 22 to penetrate out is formed on the separation plate 32; and a driving device 4 for controlling the upper cover 3 to move towards one side close to the lower pin tumbler nest 1 and controlling the lower pin tumbler nest 1 to move along the direction vertical to the lower pin tumbler hole 11 is arranged on one side of the lower pin tumbler nest 1 far away from the upper pin tumbler nest 2.

When the lock cylinder is in a locked state, the upper pin holes 21 are aligned with the lower pin holes 11 one by one, at this time, the inner upper pins 22 are abutted against the lower pins 12, the protruding blocks 422 of the upper pins 22 are positioned in the upper pin holes 21 under the action of the pin springs 13, and the end parts of the upper pins 22 do not enter the key slot 31.

In use, the card key 6 is inserted, the driving device 4 drives the upper cover 3 to move downwards, the isolation plate 32 synchronously moves downwards, and therefore the upper marble 22 slides out of the isolation plate marble hole 321. If a card key 6 matched with the lock cylinder is inserted, the contact surface between the upper pin 22 and the lower pin 12 is gradually aligned with the combined surface of the upper pin nest 2 and the lower pin nest 1, so that unlocking is realized.

A handle shaft 5 is arranged on one side of the lower pin tumbler nest 1, which is far away from the upper pin tumbler nest 2, the driving device 4 comprises an elastic component 41 arranged on the lower pin tumbler nest 1, and the elastic component 41 drives the lower pin tumbler nest 1 to move along the direction vertical to the lower pin tumbler hole 11; the handle shaft 5 is provided with a driving component 42 which drives the upper cover 3 to move along the length direction of the upper bullet hole 21 and controls whether the lower bullet nest 1 moves along the direction vertical to the lower bullet hole 11. When the lock is in operation, a card is inserted, the handle shaft 5 is rotated, the upper cover 3 is driven by the driving component 42 to move downwards, if the card key 6 is matched with the lock cylinder in the direction, the lower pin tumbler 1 is driven by the elastic component 41 to move towards one side, and if the card key 6 is not matched with the lock cylinder, the upper pin tumbler 22 and the lower pin tumbler 12 limit the lower pin tumbler 1, so that the lower pin tumbler 1 cannot move towards one side.

An elongated slot 14 is formed in the lower pin tumbler nest 1 along the transmission direction thereof, the elastic component 41 comprises a positioning part 411 which is arranged in the elongated slot 14 and is used for being fixedly connected with the lock body, and an action spring 412 which is positioned in the elongated slot 14 and is in a compressed state, one end of the action spring 412 abuts against the bottom of the elongated slot 14, and the other end of the action spring abuts against the positioning part 411; when the driving assembly 42 is released from the position of the lower pin nest 1 and all the upper pins 22 and the lower pins 12 are aligned with the combined surfaces of the upper pin nest 2 and the lower pin nest 1, the lower pin nest 1 moves to one side for a certain distance under the action of the action spring 412.

The driving assembly 42 comprises an eccentric wheel 421 arranged on the handle shaft 5, a protrusion block 422 fixed on the lower pin tumbler nest 1 and positioned on one side of the lower pin tumbler nest 1 far away from the upper pin tumbler nest 2, and a contact 423 arranged on one side of the handle shaft 5 far away from the lower pin tumbler nest 1, wherein a connecting piece 424 is connected between the contact 423 and the upper cover 3; when the handle shaft 5 is rotated, the eccentric 421 rotates synchronously. The eccentric 421 can contact with the protrusion block 422 and the contact 423 during rotation. When the eccentric 421 rotates to abut against the protruding block 422, the protruding block 422 drives the lower pin nest 1 to move to the initial position against the elastic action of the action spring 412, where the initial position refers to the position of the lower pin nest 1 when the upper pin hole 21 is aligned with the lower pin hole 11.

When the eccentric 421 rotates to abut on the contact 423, the connecting member 424 moves the upper cover 3 downward. When the eccentric 421 leaves the protruding block 422, the only limitation on the movement of the lower pin nest 1 is whether the direct contact surface of the upper pin 22 and the lower pin 12 is aligned with the joint surface of the upper pin nest 2 and the lower pin nest 1.

When the handle shaft 5 is not rotated, the eccentric 421 is pressed against the projection 422, and the eccentric 421 is separated from the contact 423.

When the eccentric 421 rotates forward, the eccentric 421 presses the contact 423, and the eccentric 421 continues to rotate, so that the eccentric 421 is separated from the protruding block 422; that is, the contact 423 moves downwards to drive the upper cover 3 to move downwards, and then the eccentric 421 separates from the protrusion 422 to release the limitation on the movement of the lower pin tumbler 1.

When the eccentric 421 rotates reversely, the eccentric 421 contacts the protruding block 422 first, and continues to rotate the eccentric 421, so that the eccentric 421 is separated from the contact 423 while keeping contact with the protruding block 422. Namely, after the lower pin tumbler nest 1 returns to the original position, the upper cover 3 can move upwards, so that the lower pin tumblers 12 correspond to the upper pin tumblers 22 one by one, and the situation that the lower pin tumbler nest 1 cannot return to the original position due to the fact that the lower pin tumblers 12 are aligned with the upper pin tumblers 22 in a wrong position is avoided.

When the upper cover 3 moves towards the side close to the lower pin tumbler nest 1, the protection wall 23 passes through the protection wall hollow hole 322 and the card key 6 and then abuts against one side of the key slot 31 far away from the partition plate 32. The protection wall 23 is located on the side close to the entrance of the key insertion slot 31, and the upper pin 22 is located on the side of the protection wall 23 away from the entrance of the key insertion slot 31. The entry means an entry formed in the key slot 31 on the upper cover 3 side, and the card key can enter the key slot 31 only through the entry and then be unlocked. Due to the protection wall 23, when the upper cover 3 moves downwards, the protection wall 23 and the upper marble 22 move upwards simultaneously, when viewed from the outside of the key slot 31, the upper marble 22 is always positioned at the rear side of the protection wall 23, and the upper marble 22 at the rear side of the protection wall 23 cannot be directly viewed from the entrance.

The protection wall 23 is formed in a "C" shape and includes a side located at the entrance of the key insertion slot 31 and two adjacent sides. When the upper cover 3 is moved downward to the unlocking position, the protection wall 23 abuts on the upper side wall of the key insertion groove 31. The protection wall 23 wraps the inner upper pin 22, and if the search tool is used for searching without a correct card key 6, the search tool needs to bypass the C-shaped protection wall 23 and enter the area of the upper pin 22 from the inner side close to the key slot 31 to search the upper pin 22, so that the search difficulty is greatly enhanced.

The upper pins 22 and the lower pins 12 are randomly distributed along a plane perpendicular to the length of the upper pins 22. Each of the upper pins 22 and the lower pins 12 has different lengths, that is, when a card is not inserted, the contact surface of the upper pin 22 and the lower pin 12 may be maintained on the junction surface of the upper pin nest 2 and the lower pin nest 1 or on the upper side of the junction surface, and due to the random distribution of the upper pins 22 and the lower pin 12, when a detection tool detects the upper pins 22 by bypassing the protection wall 23, a plurality of upper pins 22 may be simultaneously pressed, when the upper pins 22 are pressed, the contact surface of the upper pins 22 and the lower pin 12 may be located at the upper side position, the alignment position or the lower side position of the upper pin nest 2 and the lower pin nest 1, and since it is unclear which upper pin 22 is pressed or which upper pins 22 are pressed, effective detection cannot be performed.

An upper cover marble hole 33 corresponding to the upper marble hole 21 one by one is formed in the key slot 31 and on one side far away from the partition plate 32, and when the upper marbles 22 and the lower marbles 12 are aligned one by one, and the upper cover 3 is positioned at the uppermost end, that is, when the upper cover 3 does not move downwards, one end of the upper marbles 22 far away from the lower marbles 12 is not higher than the partition plate 32, so that when the lock cylinder is in a locked state, the upper marbles 22 cannot enter the key slot 31, and the card key 6 can be smoothly inserted.

When the upper lid 3 is moved downward, the upper pins 22 are pressed by the pin springs 13, and part of the upper pins 22 pass through the card key 6 and abut in the upper lid pin holes 33. When the card key 6 is not inserted, all the upper pins 22 abut against the inside of the upper-cover pin hole 33 by the pin spring 13 due to the downward movement of the upper cover 3.

The upper pin hole 21 and the upper pin 22 are respectively provided with a step 211, and the cross-sectional area of one end of the upper pin hole 21 and the upper pin 22 close to the lower pin hole 11 relative to the step 211 is larger, and the cross-sectional area of one end close to the partition plate 32 is smaller.

The step 211 on the upper pin hole 21 is a first step, and the step 211 on the upper pin 22 is a second step. When the lock core is in a locked state, the first step and the second step are in contact and abutted, and at the moment, the upper end of the upper pin 22 protrudes out of the upper pin nest 2 and does not enter the key slot 31. When the card key is not inserted in the use process, when the spring 13 applies pressure to the lower marble, the upper marble 22 is limited by the step 211, so that the upper ends of the upper marbles 22 are kept parallel.

One side of the upper marble nest 2 close to the partition plate 32 is provided with a positioning hole 24, a positioning spring 25 in a compressed state is arranged in the positioning hole 24, a positioning marble 26 is arranged in the positioning hole 24, one end of the positioning marble 26 abuts against the positioning spring 25, and the other end of the positioning marble 26 abuts against the partition plate 32. After the upper cover 3 is moved downward, the upper cover can be restored to its original position by the positioning spring 25 without applying an external force. It should be noted that the upper pin tumbler nest 2 is kept fixed in relative position during actual installation, and here, the positioning spring 25 and the positioning pin 26 are both provided on the upper pin tumbler nest 2, and in addition, this structure may be fixed on the upper pin tumbler nest 2, or may abut against other structures, as long as the structure is provided in which the position is kept relatively stable in the vertical direction, and this is not limited here.

The card key 6 is provided with a protective groove 61 for the protective wall 23 to pass through, a through hole 62 or a blind hole 63 with different depths is arranged on the inner side plane of the protective groove 61 at the position corresponding to the upper marble 22, and the upper marble 22 passes through the through hole 62 and abuts against the blind hole 63 or against the surface of the card key 6.

When the lock is unlocked using the correct card key 6, the card key 6 is inserted into the key insertion slot 31. When the handle shaft 5 is rotated, the eccentric wheel 421 is driven to rotate, the upper cover 3 is driven to move downwards in the rotation process of the eccentric wheel 421, at the moment, a part of the upper marbles 22 pass through the through holes 62 and abut against the inner part of the marble holes 33 of the upper cover, a part of the upper marbles 22 abut against the inner part of the blind holes 63, and a part of the upper marbles 22 abut against the surface of the card key 6, and the contact surfaces of the upper marbles 22 and the lower marbles 12 are both positioned on the joint surface of the upper marble nest 2 and the lower marble nest 1. Then, the eccentric wheel 421 cancels the limit of the lower pin tumbler 1, so that the lower pin tumbler 1 horizontally moves under the action of the action spring 412 to realize unlocking. When the card key 6 is not a matched card key or the card key 6 is not inserted, the handle shaft 5 rotates to drive the eccentric wheel 421 to rotate, the upper cover 3 is driven to move downwards in the rotation process of the eccentric wheel 421, after the upper cover 3 moves downwards, the contact surface of the upper marble 22 and the lower marble 12 is not aligned with the joint surface of the upper marble nest 2 and the lower marble nest 1, and the limitation on the lower marble nest 1 is not cancelled, so that the lower marble nest 1 still cannot move horizontally after the eccentric wheel 421 cancels the limitation on the lower marble nest 1.

It should be noted that the connection relationship between the groove of the lower pin 12 and the latch tongue 71 is the same as that of the prior art, and a lock body to which the above-mentioned key cylinder can be applied is described below, but not limited to the lock body.

The lock body comprises a frame body 7, a lock core arranged on the inner side of the frame body 7, a bolt 71 which can move left and right and extends out of the frame body 7 to lock the door, and a linkage assembly 72 arranged between the bolt 71 and the lower spring nest 1.

The linkage assembly 72 includes a first connecting plate 721 with one end rotatably connected to one end of the latch tongue 71 close to the lower pin tumbler 1, a second connecting plate 722 arranged on the frame 7 and capable of moving left and right, a power plate 723 fixed on the lower pin tumbler 1, and a driving plate 724 fixedly connected to the handle shaft 5.

First connecting plate 721 is L-shaped, and free end upwards bends and forms first joint piece 7211, and is formed with inclined plane 7212 at the one end that first connecting plate 721 deviates from first joint piece 7211, and when power plate 723 moves left under the drive of lower spring nest 1, power plate 723 butt on inclined plane 7212 for first connecting plate 721 upwards inclines.

The second connecting plate 722 is L-shaped, and a second catching block 7221 is formed downward at an end close to the first connecting plate 721, and the second catching block 7221 is located at an end of the latch 71, and when the first connecting plate 721 moves upward. First joint piece 7211 and second joint piece 7221 gomphosis from top to bottom for first connecting plate 721 and second connecting plate 722 interlock each other, when rotating handle axle 5, drive plate 724 drives second connecting plate 722 horizontal migration left, realizes unblanking.

A kidney groove 7241 is formed on the driving plate 724, a coupling shaft 7242 is formed on the second coupling plate 722, the coupling shaft 7242 is positioned in the kidney groove 7241, and the diameter of the coupling shaft 7242 is smaller than the width of the kidney groove 7241. When the handle shaft 5 rotates, the eccentric wheel 421 preferentially contacts the contact 423, then after the eccentric wheel 421 leaves the protruding block 422, the wall of the kidney-shaped groove 7241 abuts against the connecting shaft 7242 to drive the connecting shaft 7242 to move rightwards, so that unlocking is realized, and the door locking principle is opposite to the unlocking principle, which is not described herein again.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a card key prevent technical unlocking lock core which characterized in that: comprises a lower marble nest (1) and an upper marble nest (2), wherein an upper cover (3) is arranged outside the upper marble nest (2);

a plurality of lower marble holes (11) are arranged on the lower marble nest (1) at intervals, a lower marble (12) is arranged in each lower marble hole (11) in a sliding manner, a marble spring (13) is arranged in each lower marble hole (11), one end of the marble spring (13) is abutted against the bottom of the lower marble hole (11), and the other end of the marble spring (13) is abutted against the end part of the lower marble (12);

the upper marble nest (2) is provided with penetrating upper marble holes (21), the upper marble holes (21) correspond to the lower marble holes (11) one by one, and upper marbles (22) with different lengths are arranged in each upper marble hole (21) in a sliding manner;

a key slot (31) for inserting a card key (6) is arranged on the upper cover (3) along the direction vertical to the length of the upper marble (22),

a separation plate (32) is integrally formed on the upper cover (3) and positioned between the key slot (31) and the lower marble nest (1), and a separation plate marble hole (321) for the upper marble (22) to penetrate through is formed in the separation plate (32);

a driving device (4) for controlling the upper cover (3) to move towards one side close to the lower pin tumbler nest (1) and controlling the lower pin tumbler nest (1) to move along the direction vertical to the lower pin tumbler hole (11) is arranged on one side of the lower pin tumbler nest (1) away from the upper pin tumbler nest (2);

a protection wall (23) is integrally formed on one side, close to the partition plate (32), of the upper pin tumbler nest (2), a hollow hole (322) of the protection wall is formed in the partition plate (32), and when the upper cover (3) moves towards one side, close to the lower pin tumbler nest (1), the protection wall (23) penetrates through the hollow hole (322) of the protection wall and the card key (6) and then abuts against the side wall of the key slot (31) parallel to the plane of the partition plate (32); and the protection wall (23) is positioned between the entrance of the key slot (31) and the upper marble (22).

2. The anti-theft lock cylinder of the card key according to claim 1, characterized in that: the driving device (4) comprises an elastic component (41) arranged on the lower pin tumbler (1) and a driving component (42) arranged at the handle shaft (5);

the elastic component (41) drives the lower marble nest (1) to move along the direction vertical to the lower marble hole (11);

the driving component (42) drives the upper cover (3) to move along the length direction of the upper bullet hole (21) and controls whether the lower bullet nest (1) moves along the direction vertical to the lower bullet hole (11).

3. The anti-theft lock cylinder of the card key according to claim 1, characterized in that: an upper cover marble hole (33) which corresponds to the upper marble hole (21) one by one is formed in one side wall which is positioned in the key slot (31) and is parallel to the isolation plate (32), when the upper marbles (22) and the lower marbles (12) are aligned one by one, and the upper cover (3) is positioned at the uppermost end, one end, far away from the lower marbles (12), of the upper marbles (22) is not higher than the isolation plate (32); when the upper cover (3) moves downwards, the upper marble (22) penetrates through the upper marble (22) of the card key (6) and abuts against the inner part of the upper cover marble hole (33) under the pressure of the marble spring (13).

4. The anti-theft lock cylinder of the card key according to claim 1, characterized in that: the upper marble hole (21) and the upper marble (22) are respectively provided with a step (211), and the cross sectional area of one end of the upper marble hole (21) and the upper marble (22) close to the lower marble hole (11) relative to the step (211) is larger, and the cross sectional area of one end of the upper marble hole and the upper marble is smaller close to the partition plate (32).

5. The anti-theft lock cylinder of the card key according to claim 2, characterized in that: an elongated slot (14) is formed in the lower pin tumbler nest (1) along the transmission direction, the elastic component (41) comprises a positioning part (411) which is arranged in the elongated slot (14) and is used for being fixedly connected with the lock body, and an action spring (412) which is positioned in the elongated slot (14) and is in a compressed state, one end of the action spring (412) abuts against the bottom of the elongated slot (14), and the other end of the action spring abuts against the positioning part (411); when the driving component (42) cancels the limit of the lower pin tumbler nest (1), and simultaneously all the upper pin tumblers (22) and the lower pin tumblers (12) are aligned with the combined surface of the upper pin tumbler nest (2) and the lower pin tumbler nest (1), the lower pin tumbler nest (1) moves for a certain distance under the action of the action spring (412).

6. The anti-theft lock cylinder of the card key according to claim 5, characterized in that: the driving assembly (42) comprises an eccentric wheel (421) arranged on the handle shaft (5), a protruding block (422) which is fixed on the lower pin tumbler nest (1) and is positioned on one side of the lower pin tumbler nest (1) far away from the upper pin tumbler nest (2), and a contact (423) which is arranged on one side of the handle shaft (5) far away from the lower pin tumbler nest (1), wherein a connecting piece (424) is connected between the contact (423) and the upper cover (3);

when the eccentric wheel (421) is rotated to abut against the protruding block (422), the protruding block (422) drives the lower pin tumbler (1) to move to an initial position against the elastic action of the action spring (412); when the eccentric wheel (421) is rotated to abut against a contact (423), the connecting piece (424) drives the upper cover (3) to move downwards;

when the eccentric wheel (421) rotates in one direction, the eccentric wheel (421) continues to rotate after pressing the contact point (423), and the eccentric wheel (421) is separated from the protruding block (422);

when the eccentric wheel (421) rotates in the opposite direction, the eccentric wheel (421) is firstly pressed against the protruding block (422) and continues to rotate the eccentric wheel (421), and the eccentric wheel (421) is separated from the contact (423).

7. The anti-theft lock cylinder of the card key according to claim 1, characterized in that: the protection wall (23) is in the shape of an incomplete annular protrusion.

8. The anti-theft lock cylinder of the card key according to claim 1, characterized in that: the card key (6) is provided with a protective groove (61) for a protective wall (23) to penetrate through, a through hole (62) or blind holes (63) with different depths are formed in the position, corresponding to the upper marble (22), on the inner side plane of the protective groove (61), and the different upper marbles (22) penetrate through the through hole (62), abut against the inside of the blind holes (63) or abut against the surface of the card key (6).