CN101059052A - Mechanical key cipher lock - Google Patents

Abstract

The present invention discloses a mechanical push-button cipher lock. Through the updating of prior mechanical push-button cipher technology, it not only has the characteristics of prior technologies, also has advantages of with single-button in many times, dual-card hinging multistage compose-cipher, remove function key compose-cipher, hidden input, large password level amount, high secret performance and so on, it is more suitable for the requirements of vast number of users use double-lock interlocking with multi-level protection and single lock with general protection in different places.

Description

Mechanical key cipher lock

Technical field

The present invention relates to a kind of mechanical lock, relate in particular to a kind of chain mechanical key cipher lock of twin-lock by the inline multiple tooth code column hook of outer button transmission.

Background technology

At present, the mechanical key cipher lock of prior art, though removed the trouble that key lock need carry key for numerous users, thereby brought convenience, but it is single to there is service behaviour, for once the group code of property is opened and the monolock effect that locking bolt opens and closes, and its password key only plays either-or useful and useless identification when group code, can not repeat group code by singly-bound, effectively the group code summation only reaches hundreds of thousands group amount, is very easily grasped by other people.Moreover the lockset produced of prior art can only be limited to specific individual and use, and can not do the multistage protection of specific (special) requirements and use, particularly important place, warehouse, safe door and automobile steering lock, gear lock and motor vehicle wheel lock etc.Need many people's controls and multistage protection as the gate inhibition, need to increase the lockset and relevant configuration of number, this not only bothers has also increased cost; After vehicle is used by other people, the coded lock password reveal bring easily stolen open hidden danger and need the change password etc. trouble.These all are the main causes that many users will not accept the existing machinery coded lock, thereby make the existing machinery cryptographic technique be difficult to reach the needs of high-grade security protection, restrict the promotion and application of prior art, can't bring into play its due effect and value.

For above-mentioned reasons, numerous users look forward to having a kind of high security that has especially, but both monolock special uses, and the mechanical key cipher lock of again can be multiple chain multistage protection uses.

Summary of the invention

In order to eliminate worry and the hidden danger that numerous users use mechanical code lock, simultaneously also for reducing cost, the invention provides that a kind of have can the two-stage group code with same group of password key, finish locking and unblanking of the chain and monolock special use of twin-lock by controlling two locking bolts respectively, have the mechanical key cipher lock of multistage safeguard function.

For achieving the above object, the present invention is achieved by the following technical solutions: a kind of finishing by two locking bolts of the inline multiple tooth code column hook control of outer button transmission locked, but both twin-locks of unblanking are chain, but the mechanical key cipher lock of monolock special use again.Comprise 26, one groups of password keys 1 of 30, one U-shape lock buttons of a shell, 21, one of " * " word function key opens and closes 15, one lock core upper cover plates 2 of knob, 19, one groups of code column hooks of a lock core carrier base 3 and removing post 23,24, the first locking bolts 4, second locking bolt, 5, the first card hanger plates, 8, the second card hanger plates 9, lock core lower cover 29, one opens and closes drive 16, several return springs 10, several trip bolts 11.

Description of drawings

For more detailed accurate explanation performance of the present invention and operating principle, accompanying drawings.

Fig. 1 is wheel lock assembly figure of the present invention;

Fig. 2 is that the present invention takes turns the lock pin plan view from above;

Fig. 3 is the side-looking vertical and horizontal sectional drawing of lock core of the present invention;

Fig. 4 is partial password post hook figure of the present invention;

Fig. 5 is the structure and the fundamental diagram of locking bolt (tongue);

Fig. 6 opens and closes the transverse cross-sectional view of drive when a bolt is worked;

Fig. 7 is the structure and the fundamental diagram of card hanger plate;

Fig. 8 is lock core carrier base figure.

The specific embodiment

Specific embodiment one:

Normally unblank and lock for the wheel lock of implementing present embodiment, use the U-shape lock button 26 among Fig. 1, snap close one end and lock body one end flexibly connect, and the other end inserts the lock body that has dead bolt 6 and fastens with it.Before it fastened with dead bolt 6 at snap close 26 end, front and back shell 30 that will be corresponding with lock core made it the protection lock core body by trip bolt 11 connection that is harmonious.Whole being locked under the state that anchors of locking be can't see the trip bolt in the lock core body from the outside.The positive corresponding lock core extension button 1 of the fore shell of lock body shell 30, function key 21 and keying knob 15, shell 30 is provided with corresponding regular double circular hole, to guarantee button 1, function key 21 and the 15 normal mechanical movements of keying knob.Normally unblanking and locking of present embodiment is that component by in the lock core are finished, it mainly is by a carrier base 19, one group of password key 1, remove function key 21 for one, one opens and closes 15, two locking bolts 4 of knob and 5, two card link plates 8 and 9 and corresponding with it code column hook 3, remove post 23 and 24, lock core cover plate etc. up and down cooperates to be accomplished by suitable mechanical movement and unblanks, locks.

Concrete operating principle is:

1, shown in Fig. 8 (a) plan view from above, (b) side-looking fore-and-aft plane figure, carrier base 19 is the up and down cuboid of workspace of a branch, is used to put locking bolt 4 and 5, card hanger plate 8 and 9 and code column hook 3.Workspace is a high outside and low outside rectangular frame of being made up of a, b, c step on it, and a portion is the highest portion of housing, mainly plays the effect of vertical two end supports upper cover plate 2, and its bottom integrated with following workspace links to each other, and plays the effect of supporting lower cover 29 equally; B portion is lower slightly and two ends are connected in vertical side frame wall of a portion, can play and stablize two locking bolts and the movable in position effect of code column hook, be provided with fixedly press strip fastener hole 35-1 of up big and down small concentric circle holes 1-1 and locking bolt at corresponding each the button spring loop bar of b portion, spring loop bar circular hole runs through b portion.The workspace is provided with central dividing plate C up and down, in order to separate and to support locking bolt 4 and 5 and card hanger plate 8 and 9, dividing plate C is provided with the matrix T type hole 3-1 of corresponding key number, the number of T type hole 3-1 is corresponding with code column hook 3 and removing post 23,24, its effect is a fixed password post hook 3, remove the operating position and the guiding code column hook 3 of post 23,24, the mechanical movement of removing post 23,24 group codes.End at the close dead bolt of dividing plate C is provided with the corresponding driving locking bolt power transmission shaft 31 fixing hole 31-1 that open and close knob, is beneficial to open and close drive 16 and drives the locking bolt work.And be provided with return spring 32 in vertical rear end of dead bolt 6, and it is used for second locking bolt 5 and produces active force by tail end return spring 10 at the carrier base sidewall, and sinciput dead bolt 6 automatically locks snap close 26, and it also is that the storehouse is put in the rear end of first locking bolt 4 when unblanking simultaneously.The whole space on dividing plate C to b portion top then is the locking bolt putting groove, after two locking bolts 4 and 5 are placed in wherein, promptly with locking bolt fixedly press strip 35 fix across b portion, to guarantee the vertically freely-movable in groove of two locking bolts.Carrier base bottom workspace d links to each other with upper baffle plate c.It is a high outside and low outside vertical rectangular groove, the T type hole 3-1 corresponding with top C arranged in the groove, be used to guide code column hook 3 and remove post 23,24 and enter card hanger plate 8 and 9 group code work, two cards hanger plate 8 and 9 are vertical wherein stacked, an end of corresponding code column briar tooth hook 14 in the groove, be provided with return spring storehouse 33, an other end is established card hanger plate gathering sill 34, vertical fastening and break away from the code column hook when being in the work of card hook.Be stacked and placed on card hanger plate 8 and 9 in the groove need use the parting bead corresponding 17 separate with it and press strip 18 stable, be fixedly connected with back shroud 29 and carrier base 19 then, to guarantee code column hook 3 and to block hanger plate normal group code in the workspace, bottom.

2, lock core upper cover plate 2 is a rectangular plate corresponding with lock core, and it is provided with the password key 1 corresponding with shell 30.Remove function key 21, open and close the double circular hole of knob 15 rules of correspondence, be used for fixing password key 1, remove function key 21, open and close knob 15 operate as normal in carrier base 19.

3, password key 1 and removing function 21 are one by the round extension arm of force, the post clasp joint touches the compound body that platform and platform stable inserted link are connected as a single entity, see Fig. 3 (b) side-looking transverse cross-sectional view and Fig. 6, the impulse stroke that its extension arm of force is longer than code column hook 3, contact platform girth is slightly larger than round extension arm of force girth, be stable at when being beneficial to its work in the upper cover plate 2, the platform stable inserted link is with return spring 10, insert in the 1-1 of b portion of carrier base 19, see Fig. 8, be beneficial to button and the code column hook is advanced lose support force behind the card hanger plate and recoil to its original operating position.Password is revealed when avoiding group code.

4, opening and closing knob 15 is the inclined to one side circle that a left and right directions rotates, and it links to each other with travelling gear 16 in the lock core by power transmission shaft 31, unblanks and locking bolt 4 sinciputs are locked in order to the retraction that drives locking bolt 4 and locking bolt 5.

5, code column hook 3 and removing post 23 are that a tetragonal prism and square column one side center add one less than the synthetic post bar of the T type of square column cuboid, see Fig. 4 vertical view, its T type two bulges play the effect of fastening locking bolt, long square column part of T type and locking bolt parallel longitudinal, its corresponding card hanger plate is arranged to code column briar tooth hook 14 and is removed the oblique cutter 25 of post, the front end of each code column hook and removing post is provided with return spring discharge hole 22, is beneficial to be returned to when it enters the predetermined work position or breaks away from the card hanger plate in the group code process original operating position.The side direction T type protuberance of code column hook is close to locking bolt 4 and locking bolt 5 locking locking bolts under original duty, its corresponding locking bolt be provided with parallel over against shallow trench 7, when it is subjected to the time spent of doing of button 1, code column hook 3 just can pass card hanger plate 8 and 9, carry out password combination, 10 of the return springs of post hook front end withstand on the lower cover 29 of carrier base 19 belows, are beneficial to code column hook 3 and enter predetermined operating position or be returned to original operating position after removing.According to different group code requirements, the code column hook can be set to monodentate hook, bidentate hook and three types of three hooks, its can be respectively on each card hanger plate once, the group code chance of secondary and three times, both can single class use during use, also can two classes use and multiclass mixing use, this example is only with bidentate hook list class declaration operating principle.Remove post and also be set to the pure removing post 23 of single deck tape-recorder and two cassette tape hook removing post 24 according to the difference of removing the position, the pure removing post 23 of single deck tape-recorder can not influence password hook full scale clearance on the card hanger plate of correspondence the group code work of another card hanger plate, and two cassette tape hooks are removed post 24, code column hook on its can full scale clearance corresponding grab plate, also can hang into and block on hanger plate, influence the group codes of two card hanger plates simultaneously at another.It is a hidden removing post that this buckle is removed post 24, it can be arranged on any one position in the password key of 0-9, because its mode of occupation hangs by the fastening of card hanger plate as code column hook 3, the stranger can not correctly judge its correct operating position and mistake when it is used as the group code key and uses, the correct combination of password is removed and hindered to the code column hook that can input before, damage normal group code program, cause lockset to open.This is characteristics of the present invention, and it does not singly play the code column hook of removing on the corresponding card hanger plate, also plays a hidden protective action.The T type side of each code column hook is protruded square column and all is provided with the shallow trench 7 corresponding with locking bolt 4 and locking bolt 5, the degree of depth of groove is consistent with the rectangular post level of square column side direction, see shown in Figure 4, it helps forming the mechanical passage of code column hook, allowing locking bolt finish by mechanical passage unblanks and locks, groove 7 can be set its horizontal level according to the difference of group code program, it can also be provided with single groove and the logical two grooves of corresponding single locking bolt that corresponding two locking bolts pass through respectively as requested, see the A among Fig. 4, the hook 14 that B, the mechanical passage of per pass locking bolt then need each password hook cooperates to finish with two card hanger plates 8 and 9 to be opened.The shallow trench of removing the T type side protrusion square column of post is set at the parallel groove that can supply two bolts to pass through under the original duty, and when buckle is removed post 24 and made the group code key by mistake and push to the card hanger plate, two bolt positions are left in its parallel groove position, then its then face protrude square column will stuck locking bolt, locking bolt can't be bounced back, thereby locked snap close, lockset can't be opened.

6, for realizing the chain purpose of twin-lock, the present invention uses two locking bolts to finish, it is respectively first locking bolt 4 and second locking bolt 5, two locking bolts are plate body, it is stacked in order on second locking bolt 5 by first locking bolt 4 and is placed in simultaneously in b in the carrier base, the locking bolt putting groove between the C portion, fix the back press strip across carrier base b portion compression set with two locking bolts after two lock bolt plates are packed into, be beneficial to its lengthwise movement in groove.Under the state of locking, the front end dead bolt 6 of two locking bolts withstands on the snap close 26 simultaneously, and the T type hole 3-1 on the corresponding dividing plate C of the both sides of two locking bolts while is provided with matrix breach 27, and the promptly corresponding code column hook of each breach or a removing post are seen the A among Fig. 5.Lock bolt plate protuberance 13 is in order to block the code column hook T type square column projection under the lock-out state, to reach the purpose of locking.When the code column hook has been finished group code work at the corresponding levels, its side groove 7 is all parallel over against lock bolt plate breach 27 at the corresponding levels, thereby formed the mechanical movement passage of locking bolt at the corresponding levels, lock bolt plate protuberance 13 can pass through code column hook parallel sided groove 7 at this moment, lock bolt plate at the corresponding levels can freely bounce back or sinciput, thereby reach the purpose of unblanking, see the D state among Fig. 5.The present invention uses from an order that is bolted to two bolts and opens two locking bolts, form the duty that twin-lock is chain, even the stranger learns wherein one group of password, also lockset can't be opened, this be because two locking bolts under the state of locking fully, the driving vertical tooth rack 28 of locking bolt does not overlap on same vertical line, only finish under the state of unlatching at first locking bolt 4, travelling gear 16 is entered drive its retraction on the driving vertical tooth rack 28 of second locking bolt 5 and open, the original duty of travelling gear 16 is, be stuck on the vertical tooth rack 28 of first locking bolt 4, it can't directly enter the vertical tooth rack 28 of second locking bolt 5.

The present invention also can use second locking bolt 5 to finish separately separately and lock and unblank, and it is equipped with return spring 10 on the tail end loop bar of second locking bolt 5, is beneficial to it and opens back preceding paragraph locking snap close 26 automatically.

7, in order to guarantee that two locking bolts are bolted to two bolts from one in order and open, the present invention uses the mechanical movement of two locking bolts of a travelling gear 16 controls.Its lower end at power transmission shaft 31 is with return spring 10, is beneficial to it springing back on the original operating position of first locking bolt 4 after the work of finishing second locking bolt 5 under the effect of external force, sees Fig. 6.

8, in the present embodiment, in order to make the correct group code of code column hook 3, the present invention uses two card hanger plates 8 and 9 to cooperate with it, sees Fig. 7 (a) card hanger plate internal organs planar view.It can make code column hook 3 reach maximization in the locational conversion of group code time space, the group code number of times of each single password post hook is by the disposable hook number and the doubly amount of blocking hanger plate number product of becoming of prior art, the cipher code set amount also reaches maximum value, and confidentiality is greatly improved.The card hanger plate is the keel shape flat board of a symmetry, it plays the effect of stablizing the work of code column hook, the double code column hook inboard that the central longitudinal of each card hanger plate was crossed to just in time corresponding running through on top of mainboard, the hook 14 of the just in time corresponding code column hook of lateral keel plate 12 of mainboard both sides, its original duty are the hooks 14 that blocks fully on the code column hook.The lateral keel plate also is provided with the introduction inclined-plane that is not more than 45 degree of corresponding code column briar tooth hook angle, and the smooth extension that is beneficial to hook.For guaranteeing code column hook 3 normal group code on two card hanger plates 8 and 9 respectively, wide dividing plate 17 separates with blocking the vertical mainboard of hanger plate with one between two card hanger plates, its height is highly consistent with the hook 14 on the code column hook, the evolution that is beneficial to hook 14 on the code column hook has enough spaces, see Fig. 7 (c) card hanger plate side-looking transverse plane figure, also need simultaneously on the second grab plate 9, it to be stable in the card pocket for the punch head with the press strip 18 of parting bead 17 the same sizes with one, fix with back shroud and carrier base bottom again, two card hanger plates can be stable at operate as normal in the card pocket for the punch head, see Fig. 8.Can independently finish the group code work of post hook in order to make two card hanger plates, one end of the corresponding hook of each card hanger plate does not have return spring 10, see Fig. 7 (b) card hanger plate side-looking fore-and-aft plane figure, be beneficial to the card hanger plate by code column briar tooth hook 14 tops from after recoil to original operating position fastening password hook 14.

The operating principle of present embodiment is mainly three parts:

First, under the state that locks twin-lock fully, at first by the button 1 correct defeated first road password, drive inline multiple tooth code column hook 3 respectively at the card hanger plate 8 and 9 combination pins of its correspondence, make its side groove 7 parallel over against the first road locking bolt 4, this moment, the locking bolt machinery passage of first road lock was opened, stir in the other direction with snap close then and open and close knob 15, go up the position that driving rack 28 drives a locking bolt side direction breach 27 of locking bolt retraction by hanging down on the drive 16 and first locking bolt 4, its adjacent side breach 27 with second locking bolt 5 is overlapped, the dead bolt 6 of locking bolt front end has broken away from snap close 26, first locking bolt 4 is in the complete opening state, press " * " word then and remove kinetic energy key 21 and hidden clear key, make the code column hook all be reset to original operating position, finished the unlatching of first road lock this moment, and the second road locking bolt 5 still is in tight lock state.

Second, under the state that first road lock is opened, by the button 1 correct input second road lock cipher, drive inline multiple tooth code column hook 3 combination pin on the card hanger plate 8 and 9 of correspondence respectively, make its side groove 7 parallel over against the second road locking bolt 5, this moment, the locking bolt machinery passage of second road lock was opened, slightly firmly press down then and open and close knob 15, the travelling gear 16 that links to each other with this is entered on the second locking bolt lateral vertical side driving rack 28 to be blocked, keep-up pressure and snap close counter-rotation keying knob 15, under the driving of travelling gear 16 and driving rack 28, the front end dead bolt of second locking bolt 5 breaks away from snap close 26, the second roads lock to be opened smoothly, and so far two locking bolts break away from snap close 26 fully, the U-shape lock button separates with lock core body, thereby has finished the purpose that twin-lock is unblanked.

The 3rd, under the state that twin-lock is opened, the password of second road lock has been in opening.Push back lock core body with U-shape lock button 26 this moment, the front end dead bolt 6 of second locking bolt 5 is under the effect of the return spring 10 of locking bolt rear end, sinciput fastens snap close 26, then " * " word is removed function key 21 and hidden clear key with pressing at present, the code column hook of this road lock all resets, this moment, the locking bolt machinery passage of second road lock was shut, and locking bolt 5 can't bounce back, thereby the monolock of having finished second road lock is locked.Under the situation of not enabling first road lock, as long as repeat the input and the clear operation of this group password, it just can independently finish unblanking and locking of monolock.When needs use first locking bolt, 4 participation twin-locks chain, finish second road lock on behind the latching operation, the password of correct input first road lock, the locking bolt 4 that will be under the complete opening state by keying knob 15 is pushed the locking of snap close 26 directions to then, use " * " word removing function key 21 and hidden clear key that the code column hook of first road lock all is reset to original operating position at last, the locking bolt machinery passage of first road lock is shut, and the chain work of twin-lock is all finished.

Specific embodiment two:

The present invention can use two groups of different passwords to control two locking bolts 4 and 5 respectively and realize the chain and monolock keying of twin-lock.This is that the many integrated circuit boards that formed a uniqueness are decided, multiple tooth extension stays the group code structure owing to used two card hanger plates 8 and 9 to cooperate with one group of multiple tooth code column hook 3 participation mechanical movement.Particularly be provided with in the side of code column hook and the single groove of the parallel correspondence of double-lock bolt and the double hook groove of the parallel correspondence of single throw, see A and B among Fig. 4, it plays the effect of shared group code of single code column hook and special-purpose group code.The unlatching password of two locking bolts all is that independent the combination on two card link plates finished, thereby has guaranteed the maximum value of cipher code set amount.Since code column hook password can be on two card hanger plates group code repeatedly, therefore button 1 has overcome the either-or simple affirmation mode of prior art, realized that singly-bound repeats group code, make the stranger can't know password concrete operating position and can't decryption, further strengthened confidentiality.In the group code process, use and remove function key 21 participation group codes, thereby increased a function that cipher mask is imported.

Concrete operating principle is:

1, during this enforcement makes two card hanger plates 8 and 9 are two working linings independently separately, it provides each code column to be hooked in the space that different positions stops respectively, simultaneously can set each code column hook according to the needs of group code program again is monodentate hook, bidentate hook and three hooks, it is hook number and card link plate number product that thereby a plurality of variablees, its variate-value have just been arranged when making each singly-bound group code.Present embodiment only is illustrated operating principle with bidentate code column hook and two card hanger plate, thereby the strong cryptographic variable of its list is 2 * 2=4 (individual), it in Fig. 3 (a) side-looking longitudinal sectional drawing the bidentate hook process of twice group code on the first card hanger plate 8 and the second card hanger plate 9 respectively, its particular location is seen A, B, C, D, E, wherein A is the original operating position of code column hook, its end stops group code on any card link plate, D and E are that code column is hooked in twice group code state on the first card hanger plate 8, and B and C then are the duties that code column is hooked in twice group code on the second card hanger plate 9.Parallel during when the side groove 7 of certain code column hook over against certain locking bolt, be exactly that this code column is hooked in this road group code and hangs the operating position of staying.The code column briar tooth hook of each group code is all hung on corresponding card hanger plate when staying, and its side groove 7 is all parallel over against certain locking bolt, and then the mechanical movement passage of this road locking bolt is opened, thereby it is fixed to form many integrated circuit boards, the group code mode that multiple tooth extension stays.This group code mode has not only been broken the either-or simple affirmation mode of singly-bound that the prior art single deck tape-recorder is hung, its cipher code set amount also rises to two several ten million groups of hanging of monodentate and two several one hundred hundred million groups of hanging of three teeth from the hundreds of thousands group, and it has increased the confidentiality and the safety of lockset effectively.The cipher code set amount is calculated by the permutation and combination formula:

One, single card is hung: $A_m^n=\frac{m!}{(m-n)!}$

Two, many cards are hung: $A_{\mathrm{mx}}^n\frac{\mathrm{mx}!}{(\mathrm{mx}-n)!}$

Wherein A is the cipher code set amount, and m is the button summation, and n is a gather password key number, and x is the product of card hanger plate number and code column hook number.

2, in the group code process of present embodiment, also can select to remove function key 21 and participate in control by " * " word.In the group code process of prior art, the hook that code column hook vertical angle is big can vertical angle is little hook go down from card link plate displacement, it forms a fixing arrangement of order from large to small and hangs the group code mode of operation, and because its password key only plays the either-or usefulness of taking as really in the group code process, after this order is grasped, very easily by human alignment problem or segmentation exclusive method decryption.The present invention has overcome this shortcoming, single groove of double-lock bolt correspondence and two grooves of single throw correspondence have been used in this example, groove of common use used a groove by a locking bolt as the mechanical movement passage with independent after it can make code column hook group code, and this is the key of increase code column hook group code variable.When the group code variable increases, the sequential replacement mode of operation of prior art can have a strong impact on normal group code process, hook can not correctly be hung and stay on predetermined operating position, selects to use and removes function key 21 participation group codes, and it can make the code column hook increase the function of borrowing the card transfer and allowing card retain.The effect of borrowing the card transfer is code column to be hooked in avoid in the group code process that canine tooth is replaced little tooth and normal group code, has increased the variation space of group code code column hook; The effect that allows card retain is that the code column hook of group code carries out back group code before making, and has increased the chance of code column hook group code.Its concrete operating principle is: borrowing the card transfer is to make at first to block hanger plate 8 and to hang on the second card hanger plate 9 by first at the preceding group code code column hook of group code on the first card hanger plate 8, see A to the B state among Fig. 3 (a), press the corresponding clear key 21 of the second card hanger plate 9 then, the preceding group code code column hook of having hung is before this into removed, these code columns are hooked under the effect of its front end return spring 10, the top falls back on fastening on the first card hanger plate 8, see the D state among Fig. 3 (a), when its side groove 7 parallel during over against certain locking bolt, it has just entered the duty of opening this road locking bolt mechanical movement passage, and this position need remain to the unlatching end-of-job; If it is less than parallel operating position over against this road locking bolt, then it also needs to enter predetermined corresponding operating position under the metathesis of the code column hook of back group code, and the E state among Fig. 3 (a) has so far just been finished the work of borrowing the card transfer.Allowing card retain is to make the code column hook of first group code on the second card hanger plate 9 avoid replacing little tooth and confusion reigned with the first code column briar tooth that blocks group code on the link plate 8, its preceding group code operation is carried out simultaneously with borrowing card transfer clear operation, just in the group code operation of back, again hang on the second card hanger plate 9 being deposited in the back group code code column hook of first card on the link plate 8, make it enter final predetermined corresponding operating position, see B and C state among Fig. 3 (a).In using the process of removing function key 21 group codes, operate too early or excessively late, then it plays the effect that destroys the group code program, it makes and should not be eliminated the code column hook confusion that maybe should not enter in wherein, even the correct position of password input, it also can't open locking bolt mechanical movement passage, and locking bolt is still by locked., lockset can't be opened; If operation is correct, this seems the removing after the defeated sign indicating number error, and it but is the group code function of a hidden input.Use to remove function key 21 and participate under the situation of control group codes not setting, multiple tooth two cards of the present invention are hung still normally group code unlatching lockset.

The present invention is by the renewal to existing machinery key passwords technology, the characteristics that not only have prior art, also has repeatedly group code of singly-bound, two cards are hung multistage group code, remove the function key group code, hidden input, password level amount is big, the confidentiality advantages of higher is more suitable for the requirement that numerous users monolock chain as the twin-lock of the multistage protection of different places and common protection uses.

Claims (8)

1, a kind of mechanical key cipher lock comprises shell (30), U-shape lock button (26), password key (1), " * " word function key (21), lock core upper cover plate (2), lock core lower cover (29), lock core carrier base (19), return spring (10), trip bolt (11) is characterized in that: described shell (30) has one to open and close knob (15), there is one to open and close drive (16) in the lock core, opens and closes knob (15) and be connected with keying drive (16) by driving locking bolt power transmission shaft (31); One group of code column hook (3) and removing post (23), (24), first locking bolt (4), second locking bolt (5) has dead bolt (6) on the locking bolt; In addition, also have the first card hanger plate (8) and the second card hanger plate (9), the first card hanger plate (8) is positioned at second card hanger plate (9) top, and there is parting bead (17) centre.

2, mechanical key cipher lock according to claim 1 is characterized in that: the quantity of described password key (1) is 10, is numbered 0～9.

3, mechanical key cipher lock according to claim 1 is characterized in that: the described first card hanger plate (8) has hook (14) in the middle of blocking hanger plate (9) with second.

4, mechanical key cipher lock according to claim 1 is characterized in that: the flat shape of the described first card hanger plate (8) and the second card hanger plate (9) is " ten " font arranged side by side.

5, mechanical key cipher lock according to claim 1 is characterized in that: respectively have on described first locking bolt (4) and second locking bolt (5) vertical tooth rack (28) and can with open and close drive (16) and be connected.

6, mechanical key cipher lock according to claim 1 is characterized in that: described code column hook (3) has circular groove in the lower end, and resilient spring (10) is right after with lock core lower cover (29) in the groove.

7, mechanical key cipher lock according to claim 1 is characterized in that: described dead bolt (6) is positioned at locking bolt (4), (5) front end, and locking bolt tail end and return spring (10) join, and withstands on the sidewall of bearing (19).

8, mechanical key cipher lock according to claim 1 is characterized in that: two grooves and corresponding two single grooves that locking bolt passes through that the side of described code column hook (3) has corresponding single locking bolt to pass through.

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