CN101033664B - Mechanical lock core using circular arc sheet key and high safety mechanical lock - Google Patents

Abstract

A mechanical lock core of arc strip key contains inner lock core sleeve (10), outer lock core sleeve (90) and key (30). Several rotary round lock blades (20) are stacked into (10). Triangle lock shafts (21) incurving toward axis are opened on excircle of (20) and two bumped backstop (22, 23) are set on its circle. The (30) is strip with dental alveolus (31) toggling (20) to rotate on one side. When all (21) are alignment, the plunger latch (40) drops into the (21) and (10) can rotary freely to lock or unlock. The tooth figures can be up to 100 hundred million or above, which improve the confidentiality of mechanical lock greatly. It can prevent unlocking by violent methods such as prying and drilling etc. effectively to improve the security of mechanical lock.

Description

Adopt the mechanical lock and the high security mechanical lock of circular arc sheet key

Technical field the present invention relates to locking device, particularly mechanical lock and lock core thereof.

Background technology confidentiality and safety are most important two aspects of all mechanical lock performances, in order to improve confidentiality, will increase " tartar "---the quantity of the dislocation arrangement of key and pellet shot from a slingshot or locking plate; In order to improve safety, will strengthen anti-choose, pick-proof, security performance such as anti-drilling.The existing various lock cores that comprise cylinder lock, Reed lock, key is all taked entad arrangement mode of alveolus, because the radial and axial lock core size restrictions that is subjected to of key also will be taken self intensity into account, so no matter be to take single row or multiple rows pellet shot from a slingshot or locking plate arrangement, its " tartar " is arranged sum all less than 3125 groups, be M≤5, N≤5 (M is the alveolus number, and N is an alveolus class number), but according to actual conditions such as technology, material in the past, the arrangement sum of most lock cores is not more than 256 groups! Be M≤4, N≤4 cause confidentiality not high.Based on same reason, the keyhole that cooperates with above-mentioned key is bigger, is difficult to the prevention instrument and enters, and order is anti-chooses, pick-proof, safety such as anti-drilling are affected.

Summary of the invention the invention provides a kind of high security mechanical lock that adopts the mechanical lock of circular arc sheet key and adopt this lock core, the present invention adopts the key spoon sheet of circular arc sheet, can on the limit of circular arc sheet spoon sheet, leave alveolus, and can also guarantee that this key has enough strength support and finishes the work of stirring lock core with more multistage level.Adopt circular locking plate structure, the structure of fit circular arc shape key, some locking plates can distribute in limited lock core longitudinal space on the one hand, simultaneously, also change the limitation of locking member rectilinear motion distances such as original mechanical lock pellet shot from a slingshot or locking plate, increase the space of locking member, can reduce the recurrence probability of mechanical lock greatly, solve in the prior art that confidentiality is poor, complex structure and the high technical problem of cost.The present invention also adopts the internal lock core retainer plate and the outer lock core sets of plan that can axially relatively move, and can realize that the multi-turn of lock core is rotated, and can realize the control of multistage dead bolt, improves design scheme of the present invention.Adopt the scheme of elastic compression devices control elastic bolster guide,, still can pin lock core, security of products of the present invention is improved greatly even make the solution of the present invention under the situation that locking plate and lock bolt are taken out fully.In addition, also adopt the scheme of flexible engage a gear, can further improve this security of products, improve design scheme of the present invention more.

The scheme that the present invention solves the problems of the technologies described above is: design a kind of mechanical lock of circular arc sheet key, this mechanical lock comprises the internal lock core retainer plate and the external lock core retainer plate of suit, also includes key; The circular locking plate that multi-disc can be rotated is therein put in stack in internal lock core retainer plate inner chamber, have on this locking plate cylindrical to the recessed triangle fore shaft of axis direction, two outstanding backstops are set on the circumference of this locking plate, and the spacing on each locking plate between first backstop, second backstop and the fore shaft is not quite similar; The spoon sheet of described key partly is a circular arc sheet, one side at the alveolus that equates with locking plate quantity that offers of this key spoon sheet, another side is a flat side, the degree of depth of each alveolus is not quite similar; Also have a latch hole above the internal cylinder cover, lock bolt is embedded in this latch hole, and the section configuration of this lock bolt contact locking plate bottom is corresponding with the triangle fore shaft, and the opposing top in this lock bolt and bottom is provided with elastic compression devices; The internal circular surfaces of described external lock core retainer plate is provided with the lock core groove that can hold the lock bolt top, and described elastic compression devices places in this lock core groove; The outer end of described internal lock core retainer plate inner chamber is provided with rotatable end face capping, the moving axially of multi-disc locking plate in this end face capping restriction inner chamber, and the end face capping has the circular-arc cylindrical void that can hold the turnover of key spoon sheet.

The operating principle of the designed product of the present invention is: when the spoon sheet of a key insert in by the cylindrical void of end face capping lock core and on earth after, the spoon sheet is between all locking plate first backstops and second backstop, when alveolus direction key is arranged, the locking plate that the spoon sheet is stirred in the internal lock core retainer plate successively rotates, depth difference according to alveolus, the angle of stirring the order of locking plate and stirring its rotation is had nothing in common with each other, when first backstop of all locking plates all with after locking plate contacts, at this moment, triangle fore shaft on each locking plate just in time aligns, be rotated further key, when forwarding above-mentioned all fore shafts to latch hole position that internal cylinder puts, the bottom of lock bolt just embeds in this triangle fore shaft under the pressure of elastic compression devices, the top of lock bolt is concordant with internal lock core retainer plate cylindrical, and the internal lock core retainer plate just can freely rotate, and drives the dead bolt shift fork motion in the mechanical lock, stir dead bolt, realize the purpose of unblanking.When to flat side direction key, this flat side promotes nearest locking plate and rotates, because latch receivers is in the triangle fore shaft, so, though key just contacts with a locking plate, but can promote internal lock core retainer plate and all locking plate backward rotation equally, when the lock bar slot of lock bolt top alignment mechanical lock, lock bolt is under the pushing of triangle fore shaft hypotenuse, withdraw from this fore shaft, and its top is retracted into also in the lock bar slot of external lock core retainer plate, the internal lock core retainer plate is blocked and can't be rotated further by lock bolt, be rotated further key, at this moment, the interlock of each locking plate is disengaged, and key promotes each locking plate successively and rotates, first backstop on each locking plate withdraws from corresponding alveolus, and key just can freely have been extracted.

Described external lock core retainer plate is a tubular, its inner end is provided with the annular boss that shrinks to the center, be provided with the compression spring between the end of described internal lock core retainer plate and the outer lock core collar-shaped boss, the external surface of described mechanical lock internal lock core retainer plate is provided with the location backstop that also is provided with a projection on the inwall of cannelure external lock core retainer plate, when the internal cylinder cover is embedded in the outer lock core cover, described location backstop is embedded in the above-mentioned cannelure, and the groove width of described cannelure is greater than the diameter of location backstop.Because multistage lock needs lock core to rotate more than the week, so the present invention is for adapting to the requirement of multistage lock, designed such scheme, after a key inserts lock core, key embeds in the fore shaft of locking plate until lock bolt, pushes away key to the inside then, and lock core is pushed one section to the inside, because this moment, lock bolt embedded in the fore shaft of locking plate, so the top of lock bolt also is to be trapped in the latch hole, so, internal cylinder is enclosed within axial displacement in the external lock core retainer plate, and after the internal lock core retainer plate is pushed into, also can drives lock bolt axial displacement, thereby axially misplace with lock bar slot, when even lock bolt turns to the position of lock bar slot, lock bolt also can't playback.Like this, no matter internal cylinder is enclosed within turns to any position in the external lock core retainer plate, lock bolt can not withdraw from fore shaft, and the internal lock core retainer plate also just can random forward and reverse the rotation, thereby lock core is finished the control expanding-contracting action of multistage dead bolt or other actions, finishes and unblanks or whole programs of locking.When finish unblank or the locking purpose after, stop to push away key or outwards spur key, internal cylinder is enclosed within the effect of compression spring and outwards moves down, homing, at this moment, latch hole and lock bar slot are axially aligned, when key during to both radially aligneds, lock bolt can be retracted in the lock bar slot, and locking plate obtains discharging, and key also can have been extracted.After internal lock core retainer plate and outer lock core cover are assembled to the position, location backstop is squeezed in the cannelure of internal lock core retainer plate, like this, the internal lock core retainer plate can radially rotate, and also can move axially certain distance, but, can not deviate from fully or push, location backstop has played the effect of axial limiting, simultaneously, can also avoid the burglar that the internal cylinder cover is taken out the problem of unblanking, improve safety.

But, in such scheme, after the burglar pulled down the whole locking plates in end face capping and the internal lock core retainer plate, lock bolt will drop out, thereby loses the locking effect, in order to remedy above-mentioned defective, the present invention has designed following scheme, and the outer round surface of described internal lock core retainer plate is provided with shrinkage pool, is provided with telescopic elastic bolster guide in this shrinkage pool, one end of described elastic compression devices is connected with the elastic press device, and the plane briquetting of this elastic press device is striden and is located at the shrinkage pool top; Under elastic compression devices was in by pressure condition, elastic bolster guide was pressed in the shrinkage pool by the plane briquetting of elastic press device; Under elastic compression devices was in by complete release conditions, the part of elastic bolster guide was stretched out outside the shrinkage pool.Under the normal condition, lock bolt is in the lock bar slot or is pushed fully in the latch hole, and at this moment, elastic compression devices still withstands on the outer round surface of the top of lock bolt or internal lock core retainer plate, still be in by pressure condition, like this, elastic compression devices will be controlled the downward compression elasticity backstop of elastic press device, and is pressed in it in shrinkage pool fully, and, the axial dimension of elastic press device plane briquetting is greater than the axial dimension of shrinkage pool, and the plane briquetting can not enter in the shrinkage pool, can not influence the normal function of lock core.When being in abnormal condition; lock bolt breaks away from lock bar slot and latch hole fully, and at this moment, elastic compression devices is discharged fully; elastic compression devices loses the restriction to the elastic press device; the elastic press device will be carried on the briquetting of plane under himself flexible effect, and elastic bolster guide will lean out shrinkage pool; be stuck between internal lock core retainer plate and the external lock core retainer plate; the internal lock core retainer plate can not freely rotate equally, can not unblank, and has played the effect of protection.

The external cylindrical surface of described end face capping is provided with the annular groove of round bottom, the inwall of external lock core retainer plate is provided with the elastic bolster guide of scalable projection, the head of this elastic bolster guide is spherical, and the inwall of described external lock core retainer plate outer end is provided with the annular stop that prevents that the end face capping from axially scurrying out.When make open the lock with the key after and push the internal lock core retainer plate, along with the internal lock core retainer plate moves to desired location, described elastic bolster guide will embed in the corresponding annular groove of end face capping, restriction internal lock core retainer plate can only rotate and can not retreat, avoid the user should key when opening and closing lock, kept inwardly pushing away the trouble of lock core again; When pulling key, overcome the resistance of elastic bolster guide, internal cylinder is enclosed within the effect of compressing spring and automatically resets, and can rotate locking with that and withdraw from key.

The present invention adopts above-mentioned lock core and a kind of high security mechanical lock of making, comprises lock body, dead bolt, dead bolt shift fork and lock core, and aforementioned lock core is the mechanical lock of above-mentioned circular arc sheet key; Described mechanical lock is fixedly installed on the lock body by the external lock core retainer plate, and the internal lock core retainer plate can axially move in outer lock core cover in the mechanical lock, and when internal cylinder is enclosed within when outwards being in extension state in the external lock core retainer plate, its end connects dead bolt shift fork.Described dead bolt shift fork comprises fork and passive engage a gear ring, and the interior circle of described passive engage a gear ring endoporus is provided with has a projection at least, and the section configuration of described internal lock core retainer plate end and the shape of passive engage a gear ring endoporus adapt.When needs were unblanked, key inserted lock core, had the direction of alveolus to rotate to the spoon sheet, finished the first road program of unblanking; Continuation lock core is pushed inward and with the dead bolt shift fork on passive engage a gear ring gearing in, realize to open and close the function of lock.If the user does not continue to push lock core after finishing the first road program of unblanking, lock core can not be connected with the dead bolt shift fork, and the action that opens and closes lock can't pass to passive engage a gear ring, also just can not realize opening and closing the function of lock.

The present invention adopts circular arc sheet key, and thickness has only 0.5-1mm, and length is how many alveolus and deciding as required.Because the locking plate that is engaged with is thinner, therefore, only the length of 35mm just can be arranged 10 groups of alveolus, and the length of the key that suitably extends just can be arranged more alveolus.Also, be no less than 10 grades because the alveolus of circular arc sheet key can be arranged more class (class of standard every grade for about 0.4mm), so, the arrangement sum of this each fore shaft of circular arc sheet key can reach 1,000,000,000 or more than.Though key is very thin, wall thickness still has enough strength support and finishes the work of stirring lock core when 1mm is following.Adopt circular locking plate structure, the structure of fit circular arc sheet key is locked the radial and axial space much less that takies than cylinder lock or other rotors, and more more locking plates can distribute in identical lock core space; Because the alveolus of original mechanical lock key all is to arrange to external radiation along the axle center, and be subjected to self intensity restriction of key, the space that key is stirred pellet shot from a slingshot or locking plate is little; And the present invention adopts the key of circular arc sheet, alveolus is arranged on one side in its periphery, cooperate with locking plate, because it is above that the alveolus of the depth ratio tradition key that its alveolus launches along circumference can only be twice along the degree of depth of diameter centripedal development, add upper collet can arrange more, so the quantity of alveolus and class increase greatly, " tartar " can reach 10,000,000,000 groups or more than, be M 〉=10, the confidentiality of mechanical lock greatly has been improved in N 〉=10! Simultaneously, the key of circular arc sheet meets the biomimetic features principle, and is not only thin but also firm, the lockhole of Pei Heing with it, and its circular arc sheet gap is not more than 1mm, makes any effort that utilizes elongate tool to instigate become futile effort; Also owing to present invention includes the lock body that uses the multiple design of putting into gear, unblank to make again through unblanking earlier lock core and latch members to carry out the program of the dual or multiple action of putting into gear, locking is then opposite, so can effectively stop violent meanses such as using sled, brill to be unblanked, thereby safety that greatly improves mechanical lock.Adopt the blocking mechanism of this lock core to have unique dual engage a gear performance, crack, have only and untie first earlier heavy gear---lock core and lock body are out of supply, continue to make the lock core and the passive engage a gear ring gearing in of released state again by key, just can finish the program of all unblanking, otherwise, just can finish barring program.Because circular arc sheet key and anti-drilling end face capping cooperate tight, unless use key, otherwise any attempt is used the slender type instrument to go deep into making the fore shaft alignment of all locking plates in the lock core and is synchronized with the movement that thereby to aim at the attempt that the lock bolt direction unblanks again all be futile, simultaneously, any use known violent means such as is prized, is bored, pounds and also is difficult to break through the barrier that dual engage a gear forms, therefore, safe.In addition, the present invention also at the situation behind the broken lock, has specially designed anti-lock device, has improved the safety of this lock more, even suffer violent lock breaking, still can guarantee safety.The present invention is because the alveolus and the locking plate of circular arc sheet key are realized automated production easily, so accurate more; Also have the part component can use nonmetals to substitute precious metal, thereby can further reduce cost, help popularizing.

Description of drawings

Fig. 1 is that the master of the mechanical lock 100 of circular arc sheet key of the present invention looks cross-sectional schematic.

Fig. 2 a-Fig. 2 b is that the master of locking plate described in Fig. 1 20 looks with a left side and looks schematic diagram.

Fig. 3 a is the local enlarged diagram of I portion among Fig. 1.

Fig. 3 b is the schematic diagram of elastic compression devices 50 and elastic press device 51 among Fig. 3 a.

Fig. 4 is that the master of pad described in Fig. 1 24 looks schematic diagram.

Fig. 5 is the schematic perspective view of the core retainer plate of internal lock described in Fig. 1 10.

Fig. 6 is the schematic perspective view of lock bolt described in Fig. 1 40.

Fig. 7 is the schematic perspective view of the capping of end face described in Fig. 1 13.

Fig. 8 is the schematic perspective view of key described in Fig. 1 30.

Fig. 9 is the perspective exploded view of high security mechanical lock of the present invention.

Figure 10 is the schematic perspective view of the shift fork of dead bolt described in Fig. 9 80.

The specific embodiment is in conjunction with above-mentioned description of drawings specific embodiments of the invention.

By finding out among Fig. 1 to Fig. 8, the mechanical lock 100 of this circular arc sheet key is characterized in that: this mechanical lock 100 comprises the internal lock core retainer plate 10 and the external lock core retainer plate 90 of suit, also includes key 30; The circular locking plate 20 that multi-disc can be rotated is therein put in stack in internal lock core retainer plate 10 inner chambers 11, have on these locking plate 20 cylindricals to the recessed triangle fore shaft 21 of axis direction, two outstanding backstops 22 are set on the circumference of this locking plate 20,23, the spacing on each locking plate 20 between first backstop 22, second backstop 23 and the fore shaft 21 is not quite similar; The spoon sheet of described key 30 partly is a circular arc sheet, one side at the alveolus 31 that equates with locking plate 20 quantity that offers of 30 spoons of sheets of this key, another side is a flat side, the degree of depth of each alveolus 31 is not quite similar; Also have a latch hole 12 above the internal lock core retainer plate 10, lock bolt 40 is embedded in this latch hole 12, and bottom 41 section configurations of this lock bolt 40 contact locking plates 20 are corresponding with triangle fore shaft 21, and this lock bolt 40 and bottom 41 opposing tops 42 are provided with elastic compression devices 50; The internal circular surfaces of described external lock core retainer plate 90 is provided with the lock core groove 91 that can hold lock bolt 40 tops 42, and described elastic compression devices 50 places in this lock core groove 91; The outer end of described internal lock core retainer plate 10 inner chambers 11 is provided with rotatable end face capping 13, the moving axially of multi-disc locking plate 20 in this end face capping 13 restriction inner chambers 11, and end face capping 13 has the circular-arc cylindrical void 131 that can hold 30 spoons of sheets turnover of key.

The operating principle of the designed product of the present invention is: when the spoon sheet of a key 30 insert in by the cylindrical void 131 of end face capping 13 lock core 100 and on earth after, the spoon sheet is between all locking plate first backstops 22 and second backstop 23, when alveolus 31 direction key 30 are arranged, the locking plate 20 that the spoon sheet is stirred in the internal lock core retainer plate 10 successively rotates, depth difference according to alveolus 31, the angle of stirring the order of locking plate 20 and stirring its rotation is had nothing in common with each other, when first backstop 22 of all locking plates 20 all with after locking plate 20 contacts, at this moment, triangle fore shaft 21 on each locking plate 20 just in time aligns, be rotated further key 30, when forwarding above-mentioned all fore shafts 21 on the internal lock core retainer plate 10 latch hole 12 positions, the bottom 41 of lock bolt 40 just embeds in this triangle fore shaft 21 under the pressure of elastic compression devices 50, the top 42 of lock bolt 40 is concordant with internal lock core retainer plate 10 cylindricals, and internal lock core retainer plate 10 just can freely rotate, and drives the dead bolt shift fork motion in the mechanical lock, stir dead bolt, realize the purpose of unblanking.When to flat side direction key 30, this flat side promotes nearest locking plate 20 and rotates, because lock bolt 40 is stuck in the triangle fore shaft 21, so, though 30 of keys contact with a locking plate 20, but can promote internal lock core retainer plate 10 and all locking plate 20 backward rotation equally, when the lock bar slot 91 of mechanical lock is aimed at lock bolt 40 tops 42, lock bolt 40 is under the pushing of triangle fore shaft 21 hypotenuses, withdraw from this fore shaft 21, and its top 42 is retracted into also in the lock bar slot 91 of external lock core retainer plate 90, internal lock core retainer plate 10 is blocked and can't be rotated further by lock bolt 40, be rotated further key 30, at this moment, the interlock of each locking plate 20 is disengaged, and key 30 promotes each locking plate 20 successively and rotates, first backstop 22 on each locking plate 20 withdraws from corresponding alveolus 31, and key 30 just can freely have been extracted.

By finding out among Fig. 2 a and Fig. 2 b, described locking plate 20 is middle round-meshed annular, and first backstop 22 and second backstop 23 were located on the interior round week of locking plate 20.After key 30 inserts, in the circular hole in the middle of the spoon sheet insertion locking plate 20, and be between first backstop 22 and second backstop 23.When forward rotation key 30, the bottom of an alveolus 31 in the key 30 contacts with locking plate 20 first backstops 22, promoting this locking plate 20 by first backstop 22 then rotates, corresponding respectively other locking plate 20 that promotes of other alveolus 31 rotates, thus, with 21 alignment of the fore shaft on each locking plate 20, finish the task of unblanking with locking.Backward rotation key 30, because lock bolt 40 still is embedded in the fore shaft 21, so, flat side on 30 spoons of sheets of key is as long as contact with second backstop 23 of one of them locking plate 20, will promote each locking plate 20 backward rotation together, when lock bolt 40 is pulled to can be corresponding lock bar slot 91 time, the inclined-plane of fore shaft 21 will promote the bottom 41 of lock bolt 40 and withdraw from entering latch hole 12 fully, subsequently, the spoon sheet contacts with second backstop of other locking plate 20 successively, along with the key counter-rotating, each locking plate 20 has also withdrawed from corresponding alveolus 31 respectively, and get back to the home position, and this moment, the fore shaft 21 of each locking plate 20 staggered mutually, and key 30 can be extracted.20 1 end faces of described locking plate are provided with the cannelure 25 of punch forming locking plate 20, and this cannelure 25 is presented as the annular muscle 26 of projection on locking plate 20 another one end faces.What this cannelure 25 and annular muscle 26 played is the effect of guiding and location, can make adjacent locking plate 20 or locking plate 20 and adjacent pads 24 keep concentric.

By among Fig. 1, Fig. 4 to Fig. 7 as can be known, be provided with pad 24 between the multi-disc locking plate 20 put into of stack in described internal lock core retainer plate 10 inner chambers 11, be intervally arranged between each locking plate 20; The alveolus 21 of 30 spoons of sheets of described key is the independent distribution of isolating mutually; The cylindrical of described pad 24 is provided with the catch 241 of projection, and the inwall of described internal lock core retainer plate 10 inner chambers 11 is axially arranged with locating slot 16, and described catch 241 is embedded in this locating slot 16.Be provided with between the inner face of described end face capping 13 and the locking plate 20 and adjust pad 14.After end face capping 13 press-fited, the locking plate 20 that can compacting be superimposed was avoided locking plate 20 axial floats.Isolate and setting at interval with pad 24 between each locking plate 20, in the time of can avoiding adjacent locking plate 20 to be subjected to key 30 drive actions, action is passed to other locking plate 20, thereby produce misoperation.Catch 241 is set on the pad 24, and embed in internal lock core retainer plate 10 locating slots 16, keep pad 24 can not rotate with locking plate 20, because both paste mutually, so, also the effect that hinders has been played in the rotation of locking plate 20 to a certain extent, what seem that it rises is side effect, actually this is not so, and this hinders and to have prevented that but lock bolt 40 from embedding the toggle action that 21 initial stages of fore shaft may play locking plate 20 in its tip, guaranteed the accuracy of 30 pairs of locking plates of key, 20 controls.

Certainly, also can design like this: be adjacent arranging between the multi-disc locking plate 20 that stack is put in described internal lock core retainer plate 10 inner chambers 11; Also be adjacent stairstepping of arranging between each alveolus 21 of 30 spoons of sheets of described key.If, component processing enough accurately and careful, also can adopt such scheme, this scheme can make the more of alveolus 31.

By finding out among Fig. 3 a, the outer round surface of described internal lock core retainer plate 10 is provided with shrinkage pool 18, be provided with telescopic elastic bolster guide 19 in this shrinkage pool 18, an end of described elastic compression devices 50 is connected with elastic press device 51, and the plane briquetting 511 of this elastic press device 51 is striden and is located at shrinkage pool 18 tops; Under elastic compression devices 50 was in by pressure condition, elastic bolster guide 19 was pressed in the shrinkage pool 18 by the plane briquetting 511 of elastic press device 51; Under elastic compression devices 50 was in by complete release conditions, the part of elastic bolster guide 19 was stretched out outside the shrinkage pool 18.Under the normal condition, lock bolt 40 is in the lock bar slot 91 or is pushed fully in the latch hole 12, at this moment, elastic compression devices 50 still withstands on the outer round surface of the top 42 of lock bolt 40 or internal lock core retainer plate 10, still be in by pressure condition, like this, elastic compression devices 50 will be controlled elastic press device 51 downward compression elasticity backstops 19, and it is pressed in the shrinkage pool 18 fully, and, the axial dimension of elastic press device 51 plane briquettings 511 is greater than the axial dimension of shrinkage pool 18, and plane briquetting 511 can not enter in the shrinkage pool 18, can not influence the normal function of lock core 100.When being in abnormal condition; lock bolt 40 breaks away from lock bar slot 91 and latch hole 12 fully; at this moment; elastic compression devices 50 is discharged fully; elastic compression devices 50 loses the restriction to elastic press device 51; elastic press device 51 is under himself flexible effect; to carry on the plane briquetting 511; elastic bolster guide 19 will lean out shrinkage pool 18; be stuck between internal lock core retainer plate 10 and the external lock core retainer plate 90; internal lock core retainer plate 10 can not freely rotate equally, can not unblank, and has played the effect of protection; specific design can adopt chip type spring; for example: make shape shown in Fig. 3 b with spring leaf, elastic compression devices 50 and elastic press device 51 and plane briquetting 511 are all made integral type, convenient processing and economical with materials.

By among Fig. 8 as can be known, the front end of 30 spoons of sheets of described key is provided with chamfering 24, this chamfering 24 by stirring first backstop 22, makes each locking plate 20 playback at random at the initial stage that key 30 inserts lock cores, is convenient to key 30 and inserts lock cores smoothly.

By finding out among Fig. 1, described external lock core retainer plate 90 is a tubular, its inner end is provided with the annular boss 92 that shrinks to the center, be provided with compression spring 93 between the end of described internal lock core retainer plate 10 and external lock core retainer plate 90 annular boss 92, the external surface of described mechanical lock 100 internal lock core retainer plates 10 is provided with the location backstop 94 that also is provided with a projection on the inwall of cannelure 15 external lock core retainer plates 90, when internal lock core retainer plate 10 is embedded in the external lock core retainer plate 90, described location backstop 94 is embedded in the above-mentioned cannelure 15, and the groove width of described cannelure 15 is greater than the diameter of location backstop 94.

Because multistage lock needs lock core to rotate more than the week, so the present invention is for adapting to the requirement of multistage lock, designed such scheme, after a key 30 inserts lock core 100, key 30 embeds in the fore shaft 21 of locking plate 20 until lock bolt 40, push away key 30 to the inside then, lock core is pushed one section to the inside, because lock bolt 40 embeds in the fore shaft 21 of locking plates 20 at this moment, so the top 42 of lock bolt 40 also is to be trapped in the latch hole 12, so, internal lock core retainer plate 10 axial displacement in outer lock core cover 90, and after internal lock core retainer plate 10 is pushed into, also can drives lock bolt 40 axial displacements, thereby axially misplace with lock bar slot 91, when even lock bolt 40 turns to the position of lock bar slot 91, lock bolt 40 also can't playback.Like this, no matter internal lock core retainer plate 10 turns to any position in outer lock core cover 90, and lock bolt 40 can not withdraw from fore shaft 21, and internal lock core retainer plate 10 also just can random forward and reverse the rotation, thereby lock core is finished the control expanding-contracting action of multistage dead bolt or other actions, finishes and unblanks or whole programs of locking.When finish unblank or the locking purpose after, stop to push away key 30 or outwards spur key 30, internal lock core retainer plate 10 outwards moves under the effect of compression spring 93, homing, at this moment, latch hole 12 is axially aligned with lock bar slot 91, when key 30 during to both radially aligneds, lock bolt 40 can be retracted in the lock bar slot 91, and locking plate 20 obtains discharging, and key 30 also can have been extracted.After internal lock core retainer plate 10 is seated with external lock core retainer plate 90, location backstop 94 is squeezed in the cannelure 15 of internal lock core retainer plate 10, like this, internal lock core retainer plate 10 can radially rotate, and also can move axially certain distance, but, can not deviate from fully or push, location backstop 94 has played the effect of axial limiting, simultaneously, can also avoid the burglar that internal lock core retainer plate 10 is taken out the problem of unblanking, improve safety.

By finding out among Fig. 1, Fig. 7 and Fig. 9, the external cylindrical surface of described end face capping 13 is provided with the annular groove 132 of round bottom, the inwall of external lock core retainer plate 90 is provided with the elastic bolster guide 95 of scalable projection, the head of this elastic bolster guide 95 is spherical, and the inwall of described external lock core retainer plate 90 outer ends is provided with the annular stop 96 that prevents that end face capping 13 from axially scurrying out.After using key 30 to unblank and push internal lock core retainer plate 10, along with internal lock core retainer plate 10 moves to desired location, described elastic bolster guide 95 will embed in the end face capping 13 corresponding annular grooves 132, restriction internal lock core retainer plate 10 can only rotate and can not retreat, avoid the user should key when opening and closing lock, kept inwardly pushing away the trouble of lock core again; When pulling key 30 the time, overcome the resistance of elastic bolster guide 95, internal lock core retainer plate 10 automatically resets under the effect of compression spring 93, can rotate locking with that and withdraw from key.Annular stop 96 can be at internal lock core retainer plate 10, that end face capping 13 is fitted into the external lock core retainer plate is after 90s, carries out reducing by special equipment and handles and to form, and also can adopt special jump ring.

By among Fig. 9 and Figure 10 as can be known, comprise lock body 60, dead bolt 70, dead bolt shift fork 80 and lock core, aforementioned lock core is the mechanical lock 100 of circular arc sheet key described in the claim 1; Described mechanical lock 100 is fixedly installed on the lock body 60 by external lock core retainer plate 90, internal lock core retainer plate 10 can overlap in 90 at outer lock core and axially move in the mechanical lock 100, when internal lock core retainer plate 10 outwards was in extension state in outer lock core cover 90, its end 17 connected dead bolt shift fork 80.Described dead bolt shift fork 80 comprises fork 81 and passive engage a gear ring 82, and the interior circle of described passive engage a gear ring 82 endoporus is provided with has a projection at least, and the section configuration of described internal lock core retainer plate 10 ends 17 and the shape of passive engage a gear ring 82 endoporus adapt.

When needs were unblanked, key 30 inserted lock core 100, had the direction of alveolus 31 to rotate to the spoon sheet, finished the first road program of unblanking; Continuation lock core is pushed inward and with dead bolt shift fork 80 on passive engage a gear ring 82 gearing ins, realize to open and close the function of lock.If the user does not continue to push lock core after finishing the first road program of unblanking, lock core can not be connected with dead bolt shift fork 80, and the action that opens and closes lock can't pass to passive engage a gear ring 82, also just can not realize opening and closing the function of lock.

Claims (10)

1. the mechanical lock of a circular arc sheet key (100), it is characterized in that: this mechanical lock (100) comprises the internal lock core retainer plate (10) and the external lock core retainer plate (90) of suit, also includes key (30); The circular locking plate (20) that multi-disc can be rotated is therein put in stack in internal lock core retainer plate (10) inner chamber (11), have on this locking plate (20) cylindrical to the recessed triangle fore shaft (21) of axis direction, two outstanding backstops (22 are set on the circumference of this locking plate (20), 23), the spacing between last first backstop of each locking plate (20) (22), second backstop (23) and the fore shaft (21) is not quite similar; The spoon sheet of described key (30) partly be a circular arc sheet, at this key (30) one side spoon sheet offer the alveolus (31) that equates with locking plate (20) quantity, another side is a flat side, the degree of depth of each alveolus (31) is not quite similar; Also have a latch hole (12) above the internal lock core retainer plate (10), lock bolt (40) is embedded in this latch hole (12), this lock bolt (40) is corresponding with triangle fore shaft (21) with bottom (41) section configuration of locking plate (20) contact, and the opposing top (42) in this lock bolt (40) and bottom (41) is provided with elastic compression devices (50); The internal circular surfaces of described external lock core retainer plate (90) is provided with the lock core groove (91) that can hold lock bolt (40) top (42), and described elastic compression devices (50) places in this lock core groove (91); The outer end of described internal lock core retainer plate (10) inner chamber (11) is provided with rotatable end face capping (13), moving axially of the middle multi-disc locking plate (20) of this end face capping (13) restriction inner chamber (11), end face capping (13) have the circular-arc cylindrical void (131) that can hold the turnover of key (30) spoon sheet.

2. according to the mechanical lock of the described circular arc sheet key of claim 1, it is characterized in that: described locking plate (20) is middle round-meshed annular, and first backstop (22) and second backstop (23) were located on the interior round week of locking plate (20); (20) end faces of described locking plate are provided with the cannelure (25) of punch forming locking plate (20), and this cannelure (25) is presented as the annular muscle (26) of projection on locking plate (20) another one end face.

3. according to the mechanical lock of claim 1 or 2 described circular arc sheet keys, it is characterized in that: be provided with pad (24) between the multi-disc locking plate (20) that stack is put in described internal lock core retainer plate (10) inner chamber (11), each locking plate is intervally arranged between (20); The alveolus (31) of described key (30) spoon sheet is the independent distribution of isolating mutually; Be provided with between the inner face of described end face capping (13) and the locking plate (20) and adjust pad (14).

4. according to the mechanical lock of the described circular arc sheet key of claim 3, it is characterized in that: the cylindrical of described pad (24) is provided with the catch (241) of projection, the inwall of described internal lock core retainer plate (10) inner chamber (11) is axially arranged with locating slot (16), and described catch (241) is embedded in this locating slot (16).

5. according to the mechanical lock of claim 1 or 2 described circular arc sheet keys, it is characterized in that: the outer round surface of described internal lock core retainer plate (10) is provided with shrinkage pool (18), be provided with telescopic elastic bolster guide (19) in this shrinkage pool (18), one end of described elastic compression devices (50) is connected with elastic press device (51), and the plane briquetting (511) of this elastic press device (51) is striden and is located at shrinkage pool (18) top; Under elastic compression devices (50) was in by pressure condition, elastic bolster guide (19) was pressed in the shrinkage pool (18) by the plane briquetting (511) of elastic press device (51); Under elastic compression devices (50) was in by complete release conditions, the part of elastic bolster guide (19) was stretched out outside the shrinkage pool (18).

6. according to the mechanical lock of claim 1 or 2 described circular arc sheet keys, it is characterized in that: the front end of described key (30) spoon sheet is provided with chamfering (24).

7. according to the mechanical lock of claim 1 or 2 described circular arc sheet keys, it is characterized in that: described external lock core retainer plate (90) is a tubular, its inner end is provided with the annular boss (92) that shrinks to the center, be provided with compression spring (93) between the end of described internal lock core retainer plate (10) and external lock core retainer plate (90) annular boss (92), the external surface of described mechanical lock (100) internal lock core retainer plate (10) is provided with cannelure (15), also be provided with the location backstop (94) of a projection on the inwall of external lock core retainer plate (90), internal lock core retainer plate (10) is embedded in external lock core retainer plate (90) when interior, described location backstop (94) is embedded in the above-mentioned cannelure (15), and the groove width of described cannelure (15) is greater than the diameter of location backstop (94).

8. according to the mechanical lock of claim 1 or 2 described circular arc sheet keys, it is characterized in that: the external cylindrical surface of described end face capping (13) is provided with the annular groove (132) of round bottom, the inwall of external lock core retainer plate (90) is provided with the elastic bolster guide (95) of scalable projection, the head of this elastic bolster guide (95) is spherical, and the inwall of described external lock core retainer plate (90) outer end is provided with the annular stop (96) that prevents that end face capping (13) from axially scurrying out.

9. high security mechanical lock that adopts the described circular arc sheet key mechanical lock of claim 1, comprise lock body (60), dead bolt (70), dead bolt shift fork (80) and lock core, it is characterized in that: aforementioned lock core is the mechanical lock (100) of circular arc sheet key described in the claim 1; Described mechanical lock (100) is fixedly installed on the lock body (60) by external lock core retainer plate (90), internal lock core retainer plate (10) can axially move in outer lock core cover (90) in the mechanical lock (100), when internal lock core retainer plate (10) outwards was in extension state in outer lock core cover (90), its end (17) connected dead bolt shift fork (80).

10. high security mechanical lock according to claim 9, it is characterized in that: described dead bolt shift fork (80) comprises fork (81) and passive engage a gear ring (82), the interior circle of described passive engage a gear ring (82) endoporus is provided with has a projection at least, and the shape of the section configuration of described internal lock core retainer plate (10) end (17) and passive engage a gear ring (82) endoporus adapts.

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