CN104895412B - Multifunctional double-password safe lock - Google Patents
Multifunctional double-password safe lock Download PDFInfo
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- CN104895412B CN104895412B CN201510370624.7A CN201510370624A CN104895412B CN 104895412 B CN104895412 B CN 104895412B CN 201510370624 A CN201510370624 A CN 201510370624A CN 104895412 B CN104895412 B CN 104895412B
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Abstract
The invention belongs to the technical field of locks, and particularly discloses a multifunctional double-password safe lock which comprises a locking mechanism and a counting mechanism. The locking mechanism comprises a lock cylinder and a control lock rod arranged perpendicularly to the lock cylinder, a lock cylinder password sleeve set is arranged in the lock cylinder, a password disc matched with the lock cylinder password sleeve set is arranged at one end of the lock cylinder, a clamping pin, the lock cylinder and a locking rod are sequentially arranged on the control lock rod perpendicularly, a password sleeve set is arranged at the tail of the control lock rod in a sleeved manner, and the tail end of the control lock rod is connected with a lock tongue through a second connecting rod. The multifunctional double-password safe lock is reasonable in structure, high in safety and low in cost.
Description
Technical field
The invention belongs to lock technology field, more particularly to a kind of multifunctional dual cryptosecurity lockset.
Background technology
The application of lockset is fairly common, the gate of all Vomitories, the door of exclusive personal space, personal article placing cabinet,
Safety box, vehicle etc. can arrange lockset, there was only the owner of exclusive personnel or the space, article placing cabinet, vehicle so as to keyholed back plate
Can just open and lock.And lockset is also different according to the different types of its range of application, if the form locked according to it and unlock
Then can generally be divided into the lockset locked with key, unlock, and the lockset locked, unlocked using the mode for being input into password.
Existing multifunctional dual cryptosecurity lockset, is broadly divided into electronic lock and the class of mechanical lock two, and two class locksets exist
Respectively there is feature in structure, wherein electronic lock structure is relatively simple, mostly locking and unlatching are carried out using simple electronic component, one
As realize locking and unlocking action using chip and its electric control part, on the one hand easily breaking down causes the function of locking to be lost,
On the other hand easily by physical destruction.Mechanical lock structure is relatively complicated, general to be realized using the part such as gear or spring
Lock and unlocking function, but using the mode such as the engagement of simple gear or spring locking more than most of mechanical locks, it is impossible to play
Good anti-theft function.Mechanical lock with cryptographic function is individually engaged realization and locks using combination disk with password gear mostly
Function, structure is more single, does not also possess preferable anti-theft feature；It is existing with lock body and for drive lock member implement open
The lockset of lock, equipped with the coded lock of the lock pin controlled by combination disk between lock body and lock core, its lock pin all connection functions have bullet
Spring, when this coded lock enters the unlocking breach of combination disk when its lock pin, due to the effect of its spring, its lock pin enters combination disk
Unlocking breach there is unique vibration and sound, this unique vibration and sound to illegal pirate of the open coded lock theft with
The opportunity of unlocking cipher is grasped, the theftproof performance and preventing destructing performance of coded lock is reduced.
The content of the invention
To overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of rational in infrastructure, safe and low cost
Multifunctional dual cryptosecurity lockset.
For achieving the above object, the present invention is employed the following technical solutions：Multifunctional dual cryptosecurity lockset, including locking
Mechanism and counting mechanism, lockable mechanism include lock core and with the vertically disposed control locking bar of lock core, lock core cipher is provided with lock core
Sleeve group, lock core one end is provided with the combination disk being engaged with lock core cipher sleeve group, be vertically provided with successively on control locking bar bayonet lock,
Lock core and locking rod, control locking bar afterbody is arranged with password sleeve group, and control locking bar tail end is connected with dead bolt by second connecting rod；
Control locking bar is provided with control locking bar return spring, and being horizontally disposed with successively on control locking bar has projection, locking bar before locking bar stopper, locking bar
Projection and locking bar tooth bar afterwards, wherein locking bar tooth bar side is provided with locking bar tooth bar groove；Bayonet lock is provided with bayonet lock back-moving spring, bayonet lock
Bayonet lock stopper is provided with, bayonet lock stopper is provided with the latch recess with bayonet lock tooth bar, and latch recess is engaged with projection after locking bar,
One end of latch recess offers the bayonet lock stopper slot being engaged with projection before locking bar；Lock core is provided with and is engaged with locking bar tooth bar
Reset tooth, lock core is provided with lock core chute, the gangbar with plush copper is provided with lock core chute, and gangbar is fixed on bayonet lock；
First connecting rod is also connected with bayonet lock, first connecting rod is engaged with the lock core cipher pin-and-hole opened up in lock core cipher sleeve group；Lock
Stopping bar one end and locking bar tooth bar fit depressions, locking rod is provided with locking rod gag lever post, and locking rod top is provided with locking rod control
Bar processed, locking rod gag lever post is located in the control-rod stopper slot opened up on locking rod control-rod；Locking rod is provided with locking rod and answers
Position spring；Password sleeve group one end is provided with password gear, and password gear is connected by password STATEMENT OF FEDERALLY SPONSORED with combination disk.
Further, counting mechanism includes and lock core vertically disposed counting bar that counting bar one end is provided with the tooth of counting bar half,
The tooth of counting bar half is connected by driving gear set with lock core；The reset controller with gear is additionally provided with counting bar；The locking
The tooth of counting half engaged with reset controller is connected with bar control-rod；Lock core lower section is provided with lock core confinement block, lock core confinement block
Confinement block connecting rod is provided with, confinement block connecting rod one end is vertically located in reset controller.
Further, reset controller side is provided with baffle ring, and the spacing ring of circular arc is provided with baffle ring, and opposite side is provided with multiple
Position spring；One end of spacing ring is provided with spring leaf, be provided with the circular arc opening of spacing ring circle return cut-off, return cut-off with
Baffle ring is affixed, and confinement block connecting rod one end is vertically located at baffle ring, spacing ring, spring leaf and return and separates in the space to be formed.
Further, lock core is provided with anti-rotation tooth, and lock core side is provided with the anti-rotation card being engaged with anti-rotation tooth.
Further, lock core chute include cannelure and with the vertically disposed vertical slots of cannelure, vertical slots are provided with flat
Capable skewed slot, skewed slot is communicated with cannelure.
Further, reset tooth be half gear, reset tooth be arranged on vertical slots on side.
Further, first connecting rod is provided with the first alarm, and the second connecting rod is provided with the second alarm.
Compared with prior art, beneficial effects of the present invention are as follows：Control locking bar on be vertically provided with successively bayonet lock, lock core and
Locking rod, control locking bar afterbody is arranged with password sleeve group, and control locking bar tail end is connected with dead bolt by second connecting rod, arranges many
Relocking locking apparatus, improve the security of lockset, while using simple mechanical part, the production cost of lockset is reduced, even if
Lock core is destroyed by force, and lockset still can not be opened, and improves the theftproof performance and preventing destructing performance of lockset；On control locking bar
Control locking bar return spring is provided with, being horizontally disposed with successively on control locking bar has before locking bar stopper, locking bar projection and lock after projection, locking bar
Bar tooth bar, wherein locking bar tooth bar side are provided with locking bar tooth bar groove, control locking bar on arrange multiple locking components respectively with respectively
Locking system coordinates, and improves the security of lockset；Bayonet lock is provided with bayonet lock back-moving spring, and bayonet lock is provided with bayonet lock stopper, bayonet lock
Stopper is provided with the latch recess with bayonet lock tooth bar, and latch recess is engaged with projection after locking bar, and one end of latch recess opens up
There is the bayonet lock stopper slot being engaged with projection before locking bar, bayonet lock forms the lockable mechanism of safety and stability with control locking bar, strengthens lock
The stability of tool；Lock core is provided with the reset tooth being engaged with locking bar tooth bar, and lock core is provided with lock core chute, sets in lock core chute
There is the gangbar with plush copper, gangbar is fixed on bayonet lock, the movement of bayonet lock is further limited using gangbar, improve security
Energy；First connecting rod is also connected with bayonet lock, first connecting rod is engaged with the lock core cipher pin-and-hole opened up in lock core cipher sleeve group,
First connecting rod and lock core cipher pin-and-hole coordinate, when in lock core cipher any one password pin-and-hole can not to correspondence when first connecting rod it is equal
Can not fall, improve the security of lockset；Locking rod one end and locking bar tooth bar fit depressions, locking rod is provided with locking rod limit
Position bar, locking rod top is provided with locking rod control-rod, and locking rod gag lever post is located at the control-rod limit opened up on locking rod control-rod
In the groove of position, locking rod is provided with locking rod return spring, and using locking rod the security of lockset on the one hand can be improved, and on the other hand locks
Stopping bar is last necessary unlocking feature together, and locking rod control-rod is pressed each time, and counting mechanism can be counted, and reaches
To after restriction, lock core is locking, limits and unlocks, and improves the simple function of lockset, there is provided the security of lockset, prevents coded lock
The runin of unrestricted number of times, in case simple password is cracked after the trial of finite number of time；Password sleeve group one end is provided with close
Code gear, password gear is connected by password STATEMENT OF FEDERALLY SPONSORED with combination disk, using password part, improves the security of lockset；Lock core
Anti-rotation tooth is provided with, lock core side is provided with the anti-rotation card being engaged with anti-rotation tooth, the direction of lock core rotation can be limited,
Abrasion can be reduced, the service life of lockset is improved, while can coordinate with counting mechanism, strengthens the security of lockset；First connecting rod
The first alarm is provided with, second connecting rod is provided with the second alarm, when attempting unlocking, if connecting rod can not smoothly fall, report
Alert device shakes under the action of the spring so that alarm sends alarm, increases the warning function of lockset, further improves the peace of lockset
Quan Xing.
Counting mechanism includes and lock core vertically disposed counting bar that counting bar one end is provided with the tooth of counting bar half, counting bar half
Tooth is connected by driving gear set with lock core, and the reset controller with gear is additionally provided with counting bar；The locking rod control-rod
On be connected with the tooth of counting half engaged with reset controller, lock core lower section is provided with lock core confinement block, and lock core confinement block is provided with limit
Clamp dog connecting rod, confinement block connecting rod one end is vertically located in reset controller, the setting of reset controller, increases the counting meter of lockset
Shi Gongneng, can limit lock core rotates the unlocking function for further closing lockset, is closed lockset, improves the peace of lockset
Quan Xing；Reset controller side is provided with baffle ring, and the spacing ring of circular arc is provided with baffle ring, and opposite side is provided with back-moving spring；It is spacing
One end of ring is provided with spring leaf, and the return cut-off of circle is provided with the circular arc opening of spacing ring, and return cut-off is affixed with baffle ring, limit
Clamp dog connecting rod one end is vertically located at baffle ring, spacing ring, spring leaf and return and separates in the space to be formed, and confinement block connecting rod is in baffle ring
When in the outer annular space formed with spacing ring, confinement block connecting rod is in of a relatively high position, and band movable lock core confinement block limits lock
The rotation of core, when during confinement block connecting rod moves to the inner annular space that spacing ring is formed, confinement block connecting rod is in relatively low
Position, release restriction to lock core with movable lock core confinement block, realize closing unlocking function, it is to avoid unconfined trial is opened
Lock, greatly improves the security of lockset.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of lockable mechanism；
Fig. 3 is the structural representation for controlling locking bar；
Fig. 4 is the structural representation of counting mechanism and locking rod；
Fig. 5 is the structural representation of counting mechanism；
Fig. 6 is the structural representation of reset controller；
Fig. 7 is the structural representation of bayonet lock.
Specific embodiment
Multifunctional dual cryptosecurity lockset, as shown in figs. 1-7, including lockable mechanism and counting mechanism, lockable mechanism bag
Lock core 30 and control locking bar 12 vertically disposed with lock core 30 are included, lock core cipher sleeve group 22, lock core 30 1 are provided with lock core 30
End is provided with the combination disk 4 being engaged with lock core cipher sleeve group 22, and on control locking bar 12 bayonet lock 2, lock core 30 are vertically provided with successively
With locking rod 24, in pin hole 3, control locking bar 12 is arranged in locking bar through hole 1 bayonet lock 2, controls the afterbody set of locking bar 12
Password sleeve group 6 is provided with, the control tail end of locking bar 12 is connected with dead bolt 10 by second connecting rod 7；Control locking bar 12 is provided with control
Locking bar return spring 13, being horizontally disposed with successively on control locking bar 12 has before locking bar stopper 15, locking bar the and of projection 11 after projection 14, locking bar
Locking bar tooth bar 34, the wherein side of locking bar tooth bar 34 are provided with locking bar tooth bar groove 35；Bayonet lock 2 is provided with bayonet lock back-moving spring 18, card
Pin 2 is provided with bayonet lock stopper, and bayonet lock stopper is provided with the latch recess 48 with bayonet lock tooth bar 49, convex after latch recess 48 and locking bar
Block 11 is engaged, and one end of latch recess 48 offers the bayonet lock stopper slot 47 being engaged with projection before locking bar 14；On lock core 30
The reset tooth 16 being engaged with locking bar tooth bar 34 is provided with, lock core 30 is provided with lock core chute 21, is provided with convex in lock core chute 21
The gangbar 17 of head, gangbar 17 is fixed on bayonet lock 2；First connecting rod 19, first connecting rod 19 and lock core are also connected with bayonet lock 2
The lock core cipher pin-and-hole 23 opened up in password sleeve group 22 is engaged；The one end of locking rod 24 is engaged with locking bar tooth bar groove 35,
Locking rod 24 is provided with locking rod gag lever post 27, and the top of locking rod 24 is provided with locking rod control-rod 5, and locking rod gag lever post 27 is located at
In the control-rod stopper slot 26 opened up on locking rod control-rod 5；Locking rod 24 is provided with locking rod return spring 25；Password sleeve group
6 one end are provided with password gear 28, and password gear 28 is connected by password STATEMENT OF FEDERALLY SPONSORED 29 with combination disk 4.
Counting mechanism includes and the vertically disposed counting bar 43 of lock core 30 that the one end of counting bar 43 is provided with the tooth 42 of counting bar half,
The tooth 42 of counting bar half counts tooth 20 and is connected by driving gear set 41 and the lock core on lock core 30；Band tooth is additionally provided with counting bar 43
The reset controller 36 of wheel；The tooth 38 of counting half engaged with reset controller 36 is connected with locking rod control-rod 5；Under lock core 30
Side is provided with lock core confinement block 40, and lock core confinement block 40 is provided with confinement block connecting rod 39, and the one end of confinement block connecting rod 39 is vertically located at multiple
In level controller 36.The side of reset controller 36 is provided with baffle ring, and the spacing ring 45 of circular arc is provided with baffle ring, and opposite side is provided with multiple
Position spring 37；One end of spacing ring 45 is provided with spring leaf 44, and the return cut-off 46 of circle is provided with the circular arc opening of spacing ring 45,
Return cut-off 46 is affixed with baffle ring, and the one end of confinement block connecting rod 39 is vertically located at baffle ring, spacing ring 45, spring leaf 44 and return cut-off
In 46 spaces for being formed.
Lock core 30 is provided with anti-rotation tooth 31, and the side of lock core 30 is provided with the anti-rotation card being engaged with anti-rotation tooth 31
32.Lock core chute 21 include cannelure and with the vertically disposed vertical slots of cannelure, vertical slots are provided with parallel skewed slot, skewed slot
Communicate with cannelure.Reset tooth 16 be half gear, reset tooth 16 be arranged on vertical slots on side.First connecting rod 19 is provided with
First alarm 33, second connecting rod 7 is provided with the second alarm 8.
When locking, control projection 14 before the locking bar on locking bar 12 and be stuck in bayonet lock stopper slot 47, locking rod 24 is stuck in control
In locking bar tooth bar groove 35 on locking bar 12, now dead bolt 10 is in projected state, and lockset is locked；During unlocking, rotational password disk 4
So that the correspondence of password pin-and-hole 9 in password sleeve group 6, second connecting rod 7 can be slipped over from password pin-and-hole 9, while rotational password disk 4
So that the correspondence of lock core cipher pin-and-hole 23 in lock core cipher sleeve 22 so that first connecting rod 19 can be slided from lock core cipher pin-and-hole 23
Fall, when the pin-and-hole of two groups of password sleeves is to correspondence locking rod control-rod 5 is pressed, make the end of locking rod 24 from locking bar tooth bar
Remove in groove 35, control locking bar return spring 13 is acted on, drive control locking bar 12 to move, now first connecting rod 19 is from lock core cipher
Fall in pin-and-hole 23, the effect of bayonet lock return spring 18 drives bayonet lock 2 to move so that latch recess 48 is corresponding with projection after locking bar 11,
Second connecting rod 7 is slipped over from password pin-and-hole 9, releases the restriction to controlling locking bar 12, and control locking bar 12 is moved, and then drives dead bolt
10 movements, complete to unlock.During unlocking, because anti-rotation card 32 is engaged with anti-rotation tooth 31, lock core 30 can only be along a side
To rotation, the security of lockset is improved.
When counting mechanism works, the lock core on lock core 30 counts tooth 20 and drives the tooth 42 of counting bar half by driving gear set 41
Rotate, half tooth of counting bar 42 drives reset controller 36 to rotate, when locking rod 24 is moved, drive half tooth 38 of counting to move, count
After half tooth 38 is engaged with reset controller 36, reset controller 36 is driven to rotate；When reset controller 36 is rotated, confinement block connecting rod
39 move in reset controller 36, when confinement block connecting rod 39 is in the outer annular space that baffle ring 50 and spacing ring 45 are formed
When, the location of confinement block connecting rod 39 is higher, and now lock core confinement block 40 can limit the rotation of lock core 30, when confinement block connecting rod
39 slip over spring leaf 44, when entering the inner annular space that spacing ring 45 is formed from outer annular space, the phase residing for confinement block connecting rod 39
Relatively low to position, lock core confinement block 40 departs from therewith with lock core 30, and lock core 30 is rotatable；Because anti-rotation card 32 is to anti-rotation
The restriction of tooth 31, lock core 30 can only be rotated in one direction, therefore the rotation of reset controller 36 can only work as lock in one direction
After core 30 is fixed by lock core confinement block 40, due to the back-moving spring 37 that the side of reset controller 36 is installed, back-moving spring 37 can band
Dynamic reset controller 36 to opposite direction is rotated, and confinement block connecting rod 39 can be caused slowly mobile, is finally returned to 45 shapes of spacing ring
Into inner annular space in, realize to lock core 30 limit releasing.
Claims (7)
1. multifunctional dual cryptosecurity lockset, including lockable mechanism and counting mechanism, lockable mechanism includes lock core and and lock core
Vertically disposed control locking bar, is provided with lock core cipher sleeve group in lock core, lock core one end is provided with and matches with lock core cipher sleeve group
The combination disk of conjunction, it is characterised in that：Vertically it is provided with bayonet lock, lock core and locking rod on the control locking bar successively, controls locking bar tail
Portion is arranged with password sleeve group, and control locking bar tail end is connected with dead bolt by second connecting rod；The control locking bar is provided with control
Locking bar return spring, being horizontally disposed with successively on control locking bar has before locking bar stopper, locking bar projection and locking bar tooth bar after projection, locking bar,
Wherein locking bar tooth bar side is provided with locking bar tooth bar groove；The bayonet lock is provided with bayonet lock back-moving spring, and bayonet lock is provided with bayonet lock gear
Head, bayonet lock stopper is provided with the latch recess with bayonet lock tooth bar, and latch recess is engaged with projection after locking bar, and the one of latch recess
End offers the bayonet lock stopper slot being engaged with projection before locking bar；The lock core is provided with the reset being engaged with locking bar tooth bar
Tooth, lock core is provided with lock core chute, and the gangbar with plush copper is provided with lock core chute, and gangbar is fixed on bayonet lock；The card
First connecting rod is also connected with pin, first connecting rod is engaged with the lock core cipher pin-and-hole opened up in lock core cipher sleeve group；It is described
Locking rod one end and locking bar tooth bar fit depressions, locking rod is provided with locking rod gag lever post, and locking rod top is provided with locking rod
Control-rod, locking rod gag lever post is located in the control-rod stopper slot opened up on locking rod control-rod；The locking rod is provided with lock
Stopping bar return spring；Described password sleeve group one end is provided with password gear, and password gear is connected by password STATEMENT OF FEDERALLY SPONSORED with combination disk.
2. multifunctional dual cryptosecurity lockset as claimed in claim 1, it is characterised in that：The counting mechanism includes and lock
The vertically disposed counting bar of core, counting bar one end is provided with the tooth of counting bar half, and the tooth of counting bar half is by driving gear set and lock core
Lock core count tooth connection；The reset controller with gear is additionally provided with the counting bar；It is affixed on the locking rod control-rod
There is the tooth of counting half engaged with reset controller；The lock core lower section is provided with lock core confinement block, and lock core confinement block is provided with restriction
Block connecting rod, confinement block connecting rod one end is vertically located in reset controller.
3. multifunctional dual cryptosecurity lockset as claimed in claim 2, it is characterised in that：The reset controller side sets
There is baffle ring, the spacing ring of circular arc is provided with baffle ring, opposite side is provided with back-moving spring；One end of the spacing ring is provided with spring
Piece, is provided with the return cut-off of circle at the circular arc opening of spacing ring, return separates, described confinement block connecting rod one end affixed with baffle ring
Vertically it is located at baffle ring, spacing ring, spring leaf and return to separate in the space to be formed.
4. multifunctional dual cryptosecurity lockset as claimed in claim 3, it is characterised in that：The lock core is provided with anti-rotation
Tooth, lock core side is provided with the anti-rotation card being engaged with anti-rotation tooth.
5. multifunctional dual cryptosecurity lockset as claimed in claim 4, it is characterised in that：The lock core chute includes annular
Groove and with the vertically disposed vertical slots of cannelure, vertical slots are provided with parallel skewed slot, and skewed slot is communicated with cannelure.
6. multifunctional dual cryptosecurity lockset as claimed in claim 5, it is characterised in that：The reset tooth is half gear,
Reset tooth be arranged on vertical slots on side.
7. multifunctional dual cryptosecurity lockset as claimed in claim 6, it is characterised in that：The first connecting rod is provided with
One alarm, the second connecting rod is provided with the second alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510370624.7A CN104895412B (en) | 2015-06-30 | 2015-06-30 | Multifunctional double-password safe lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510370624.7A CN104895412B (en) | 2015-06-30 | 2015-06-30 | Multifunctional double-password safe lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895412A CN104895412A (en) | 2015-09-09 |
| CN104895412B true CN104895412B (en) | 2017-05-10 |
Family
ID=54028335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510370624.7A Active CN104895412B (en) | 2015-06-30 | 2015-06-30 | Multifunctional double-password safe lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895412B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505392A1 (en) * | 1981-05-11 | 1982-11-12 | Soler Marti Antonio | Combination lock operated by single shaft - has shaft driving cog wheel groups via ratchet wheel to align wheel notches with claw on bolt slide |
| CN2349311Y (en) * | 1998-11-10 | 1999-11-17 | 刘兰俊 | Double-purpose puzzle safety lock |
| CN201581708U (en) * | 2009-11-23 | 2010-09-15 | 谭智远 | Device for limiting rotation times of mechanical code |
| CN204782321U (en) * | 2015-06-30 | 2015-11-18 | 方德富 | Multi -functional dual password safety tool to lock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209541C (en) * | 2002-12-02 | 2005-07-06 | 邵志军 | Mechanical thumbwheel puzzle lock |
-
2015
- 2015-06-30 CN CN201510370624.7A patent/CN104895412B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505392A1 (en) * | 1981-05-11 | 1982-11-12 | Soler Marti Antonio | Combination lock operated by single shaft - has shaft driving cog wheel groups via ratchet wheel to align wheel notches with claw on bolt slide |
| CN2349311Y (en) * | 1998-11-10 | 1999-11-17 | 刘兰俊 | Double-purpose puzzle safety lock |
| CN201581708U (en) * | 2009-11-23 | 2010-09-15 | 谭智远 | Device for limiting rotation times of mechanical code |
| CN204782321U (en) * | 2015-06-30 | 2015-11-18 | 方德富 | Multi -functional dual password safety tool to lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104895412A (en) | 2015-09-09 |
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