CN104948022B - The U-shaped coded lock of high intensity - Google Patents
The U-shaped coded lock of high intensity Download PDFInfo
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- CN104948022B CN104948022B CN201510364406.2A CN201510364406A CN104948022B CN 104948022 B CN104948022 B CN 104948022B CN 201510364406 A CN201510364406 A CN 201510364406A CN 104948022 B CN104948022 B CN 104948022B
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- lock
- stop
- mandrel
- ring
- body shell
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Abstract
The present invention relates to a kind of U-shaped coded lock of high intensity, including U-shape lock bar and lock body, the lock body includes tubular metal lock body shell, coded lock component and stop component, and the coded lock component includes some groups of password wheel assemblies, mandrels, and the coded lock component is arranged in lock body shell.The present invention is set by by stop body and the split of stop block, and be radially slidably disposed in the groove on stop body the stop block, when U-shape lock is being pulled open bad when by external force sled, stop block U-shape lock bar drive next time radially micro-shifting and lean against on lock housing body inwall, external force is conducted to lock housing body, and lock housing body is generally all made of that, using the metal material of high intensity, therefore overall tensile strength is greatly enhanced.
Description
Technical field
The present invention relates to field of lockset, more specifically, it relates to a kind of U-shaped coded lock of high intensity.
Background technology
A kind of U-shaped common lockset of coded lock, is usually used on the non-motor vehicles such as bicycle, electric motor car with two wheels.U-shaped coded lock
U-shape lock bar and lock body are generally included, the lock body includes coded lock component, stop and lock body shell, and coded lock component includes some
Group password wheel assembly, mandrel, password wheel assembly described in every group include a ring-type password wheels and a ring-type locating wheel, the ring
Shape password wheels and ring-type locating wheel are formed and slidably, are circumferentially connected.The ring-type coded lock component axially position is rotatable
Be arranged on mandrel, when password is correct, the mandrel is axially movable unlocking.In due to existing U-shape lock, with U-shape lock
The stop part that bar upper latch notch matches generally is integrated setting with stop body other parts, and most is cast, when U-shaped
It is locked in and is pulled open bad when by external force sled, strength will be concentrated in stop this sub-fraction matched with bayonet socket, causes to damage；This
The position of lock housing body correspondence coded lock component opens up the window that all password wheels of appearance are exposed in outer existing U-shape lock, also makes
The mechanical strength for obtaining U-shape lock declines, accordingly, it is difficult to meet the requirement of antitheft intensity higher.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and it is higher, more to provide a kind of structural strength
It is difficult to the U-shaped coded lock of high intensity for destroying.
To achieve the above object, the invention provides following technical scheme：A kind of U-shaped coded lock of high intensity, including U-shape lock
Bar and lock body, the lock body include tubular metal lock body shell, coded lock component and stop component, if the coded lock component includes
Dry group password wheel assembly, mandrel, the coded lock component are arranged in lock body shell, it is characterised in that：The stop component includes
Stop body, stop block and stop back-moving spring, are radially provided with locking bar jack, the section shape of the locking bar jack on the stop body
Shape is Long Circle, more long along lock body shell axial direction, and the groove matched with stop block, the groove are additionally provided with the stop body
One end communicated with locking bar jack, the stop block is radially slidably disposed in groove, cross sectional shape and lock body after combination
Interporal lacuna cooperation in shell, the stop body and stop block are axially slidably arranged on one end of lock body shell endoporus, the stop
Back-moving spring is arranged in lock body shell, and one end is against on the stop body makes the stop block have a U-shape lock to insertion
The axial elasticity power of bar upper latch notch.
The present invention is set by by stop body and the split of stop block, and the stop block radially is slidably disposed on into lock
In groove on lock body, when U-shape lock is pulled open bad when by external force sled, stop block is radially micro- next time in the drive of U-shape lock bar
Move and lean against on lock housing body inwall, external force is conducted to lock housing body, and lock housing body is generally all using the metal material of high intensity
Material is made, therefore overall tensile strength is greatly enhanced.
Below in conjunction with specific embodiments and the drawings, the present invention will be further described.
Brief description of the drawings
Fig. 1 is specific embodiment of the invention dimensional structure diagram；
Fig. 2 is specific embodiment of the invention decomposition texture schematic diagram；
Fig. 3 is that the specific embodiment of the invention removes structural representation after shell and lock body shell；
Fig. 4 is coded lock component of the present invention and mounting bracket specific embodiment structural representation；
Fig. 5 is one of coded lock component of the present invention and mounting bracket exploded structural representation；
Fig. 6 is the two of coded lock component of the present invention and mounting bracket exploded structural representation；
Fig. 7 is mounting bracket specific embodiment structural representation of the present invention；
Fig. 8 is specific embodiment of the invention left view；
Fig. 9 is the A-A sectional views of Fig. 8；
Figure 10 is specific embodiment of the invention front view；
Figure 11 is the B-B sectional views of Figure 10;
Figure 12 is stop block specific embodiment dimensional structure diagram of the present invention；
Figure 13 is stop body specific embodiment dimensional structure diagram of the present invention；
Figure 14 is ring-type password wheels specific embodiment dimensional structure diagram of the present invention；
Figure 15 is one of ring-type locating wheel specific embodiment dimensional structure diagram of the present invention；
Figure 16 is the two of ring-type locating wheel specific embodiment dimensional structure diagram of the present invention；
Figure 17 is mandrel specific embodiment dimensional structure diagram of the present invention.
Specific embodiment
As Figure 1-3, the U-shaped coded lock of high intensity includes U-shape lock bar 1 and lock body 2, and the lock body 2 includes tubular metal
Lock body shell 201, coded lock component 202 and stop component, U-shape lock bar 1 and lock body shell 201 use high-strength metal material system
Into U-shape lock bar 1 is bent by round bar and formed.The coded lock component 202 includes some groups of password wheel assemblies, mandrels 2023, close
Code wheel component is more, and cryptographic security is higher, but structure is more complicated simultaneously, and volume also can be bigger, is provided with this specific embodiment
Four groups of password wheel assemblies, lock body shell 201 is made up of round steel pipe, and the coded lock component 202 is overall substantially in cylinder, is arranged on
In lock body shell 201.The stop component includes stop body 203, stop block 204 and stop back-moving spring, as illustrated by figs. 12-13,
Locking bar jack 2032 is radially provided with the stop body 203, the cross sectional shape of the locking bar jack 2032 is Long Circle, along lock body
The axial direction of shell 201 is more long so that stop body 203 has certain displacement space in axial direction under the insert state of U-shape lock bar 1,
Metal cylinder of the stop body 203 preferably with interporal lacuna in one section of diameter with lock body shell 201 is made, the stop body
The groove 2031 matched with stop block 204, one end and the phase of locking bar jack 2032 of the groove 2031 are additionally provided with 203 cylinders
Logical, the cuboid that the stop block 204 generally matches with the shape of groove 2031 is set, arc towards the one side of cylinder into cambered surface
Degree is identical with the cylinder of lock body shell 201, and the radial direction of stop block 204 is slidably disposed in groove 2031, section shape after combination
Shape is circle, is coordinated with interporal lacuna in lock body shell 201, and the stop body 203 and stop block 204 are axially slidably arranged on lock
One end of the endoporus of body shell 201, the position corresponding with locking bar jack 2032 is provided with and matches with the section of U-shape lock bar 1 on lock body shell 201
Circular hole constitute lockhole, the stop back-moving spring is arranged in lock body shell 201, and one end is against on the stop body 203 makes institute
Axial elasticity power of the stop block 204 with a upper latch notch of U-shape lock bar 1 to insertion is stated, in the latched condition the axial elasticity
Power can ensure stop block 204 by the secure ratcs of U-shape lock bar 1.It is described in order to prevent stop block 204 from being come off from groove 2031
The bottom of groove 2031 is preferably provided with vertical guide hole, and the bottom of stop block 204 is provided with vertical the leading with the cooperation of vertical guide hole gap
Post, the vertical guide pillar is plugged in vertical guide hole so that the stop block 204 this can radial direction can move.Described four groups
Password wheels component is spaced apart and is rotatably located on mandrel 2023, and the correspondence of the mandrel 2023 interval location is provided with
Positive stop lug boss 20231, all positive stop lug boss 20231 are arranged in a linear vertically；In this specific embodiment, password wheels described in every group
Component include a ring-type password wheels 2021 and a ring-type locating wheel 2022, the inner ring wall of the ring-type password wheels 2021 be provided with
The corresponding radial direction buckling groove 20211 in outer surface pin marker position, the inner hole wall of the ring-type locating wheel 2022 is provided with section
The axial pass trough 20221 coordinated with the gap of the positive stop lug boss 20231, the cylindrical of the ring-type locating wheel 2022 is provided with one
（Can be with more than one）Convex with the clamping that buckling groove 20211 is adapted 20222, the clamping convex 20222 coordinates in buckling groove
Ring-type password wheels 2021 and ring-type locating wheel 2022 is set to form axially slidable, the circumferential composition that is connected in 20211 described close
The component of code wheel 2021.In this specific embodiment, as illustrated in figures 14-16, pin marker in ring-type password wheels 2021 for 0-9 I
Uncle's numeral, the endoporus of ring-type password wheels 2021 is multi-diameter shaft pass, radial direction buckling groove 20211 totally ten, and being uniformly set at
On the less center bore inner wall in aperture, the center-hole diameter coordinates with the crest clearance of ring-type locating wheel 2022；The ring-type is determined
Position wheel 2022 is generally tubular, and internal orifice dimension size coordinates with the gap of mandrel 2023, and inner hole wall is provided with section with the positive stop lug boss
The axial pass trough 20221 that 20231 gaps coordinate, external diameter coordinates with the center interporal lacuna of ring-type password wheels 2021, and the clamping is convex
20222 outer surfaces for being arranged on ring-type locating wheel 2022, are additionally provided with a circle spacing on the outer surface middle part of ring-type locating wheel 2022
Bulge loop, the external diameter of the position limiting convex ring coordinates with the diametric clearance of the larger endoporus of ring-type password wheels 2021, to ring-type locating wheel 2022
Side axial displacement has carried out spacing.
As shown in Fig. 2 the mechanical strength in order to improve lock body shell 201, with annular pin wheel 2021 on the lock body shell 201
Corresponding position is preferably provided with the long slot bore that width matches with the gap of annular pin wheel 2021, and segmentation is provided between adjacent long slot bore
Expose from corresponding long slot bore in bar, the part-circular periphery face of annular pin wheel 2021.
The coded lock component 202 also includes a mounting bracket 2024, as shown in fig. 3 to 7, the mounting bracket 2024
Substantially it is in the form of a column, middle part is provided with the cavity volume matched with the component of password wheels 2021, and the cavity volume two ends are provided with and the mandrel 2023
Slippery axis hole, the component of the password wheels 2021 is engaged with axis hole and is arranged on mounting bracket respectively by the two ends of mandrel 2023
In 2024 cavity volume, locating wheel back-moving spring 2029, the back-moving spring of the locating wheel 2022 are also arranged with the mandrel 2023
One end is against on the cavity volume side wall of mounting bracket 2024, and the other end is against on the end face of locating wheel 2022 of most avris so that institute
Some ring-type locating wheels 2022 have an axial direction that the convex 20222 push-in buckling groove 20211 of clamping is constituted circumferential linkage all the time
Elastic thrust.The mounting bracket 2024 is fixed in the endoporus of lock body shell 201；For the ease of installing, the inwall of the lock body shell 201
On be fixed with fixed plate 2025, the other end opposite with the stop body 203 is provided with radially projecting in the fixed plate 2025
Bearing block, the bearing block be preferably shaped to the endoporus of lock body shell 201 match circle, the coded lock component 202 consolidate
Surely it is arranged in fixed plate 2025, in this specific embodiment, the mounting bracket 2024 and fixed plate 2025 pass through a pair of pins
It is fixedly installed on together on the inwall of lock body shell 201, the stop body 203 end face relative with mandrel 2023 is provided with and mandrel
The axial direction connection jack that 2023 gaps coordinate, the hole wall of the connection jack is provided with card cavity volume, in the card cavity volume according to
Secondary to be provided with card spring and card, the end of the mandrel 2023 is provided with the draw-in groove matched with card, and the end of the mandrel 2023 is inserted
Enter to connect in jack, the card is snapped in draw-in groove, stop body 203 is connected to form linkage, such knot with mandrel 2023
Structure, the surface of one side lock body shell 201 is not similar to the demountable parts such as screw, prevents stop body 203 from easily being unloaded,
Increased anti-theft；On the other hand, it is connected with mandrel 2023 by stop body 203, need not between stop and mandrel 2023
Other transmission mechanisms, directly axially promote stop body 203 during unlocking, structure is simpler, reliable operation.Lock body shell 201
In be rotatably provided with locking bar grafting body 205 in the other end opposite with the stop body 203, the locking bar grafting body 205 is whole
Body is cylinder, locking bar spliced eye is radially provided with locking bar grafting body 205, for the other end of grafting U-shape lock bar 1, the lock
The cross sectional shape of bar jointing holes is Long Circle, and more long along the axial direction of lock body shell 201, locking bar spliced eye is flat with locking bar jack 2032
Row set, on lock body shell 201 position corresponding with locking bar spliced eye it is same also be provided with the section of U-shape lock bar 1 match circular hole
Constitute lockhole.In order to password figure can be changed under unlocking condition, side throw-out collar is also included in the coded lock component 202
2027 and rotational alignment switching mechanism, side throw-out collar 2027 is arranged in the cavity volume of mounting bracket 2024, and it is circumferentially positioned, axially can
Movably be set on mandrel 2023, the component of password wheels 2021 of close neighbour's most avris, the side end face of side throw-out collar 2,027 1 with most
The end face of ring-type locating wheel 2022 of avris is affixed, and the rotational alignment switching mechanism can slide axially including one along mandrel 2023
The impeller 2026 of setting and a revolving part 2028, are arranged on lock to the circumferential rotatable, axially position of the revolving part 2028
In body shell 201, the one end of the impeller 2026 offsets with another side end face of the side throw-out collar 2027, the impeller 2026 it is another
One end offsets with one end of the revolving part 2028, and the other end of the revolving part 2028 is with the locking bar grafting body 205 in week
To being connected, at least one is provided with screw inclined plane in two end faces that the impeller 2026 offsets with revolving part 2028,
So as to constitute password governor motion.
In this specific embodiment, the impeller 2026 includes an end, and the side of end is provided with four（Also dependent on
Concrete condition increases and decreases）Axially extended push rod, the opposite side of the end is provided with a round platform, and described round platform end face is provided with institute
State screw inclined plane；It is in ladder shaft-like that the revolving part 2028 is overall, and a side end face is provided with and the circle on the impeller 2026
The circular-shaped, concave cavity that platform gap matches, is provided with the projection leant with the screw inclined plane in circular-shaped, concave cavity（Or inclined-plane）, the other end
Rotary shaft is constituted, the round platform of the end of the impeller 2026 coordinates in circular-shaped, concave cavity, the impeller 2026 and revolving part
2028 are arranged between mounting bracket 2024 and bearing block, the mounting bracket 2024 near side throw-out collar 2027 one end be provided with
The axial push-rod hole that the push rod gap of the impeller 2026 matches, the push rod of the impeller 2026 is supported through push-rod hole
On the end face of side throw-out collar 2027, the bearing block in the fixed plate 2025 is provided with and the rotary shaft on the revolving part 2028
The shaft hole that gap coordinates, the rotary shaft coordinates in the shaft hole, and exposes and locking bar grafting from bearing block opposite side
Body 205 is formed and is circumferentially connected, and axially preferably comprises removable plug, axial displacement is converted rotational motion to, so that structure
Into password governor motion.
The password Principles of Regulation of the U-shaped coded lock of this high intensity are as follows：When the U-shaped coded lock of high intensity is under locking states
When, due to being inserted with U-shape lock bar 1 in locking bar grafting body 205, thus cannot rotate, the password of coded lock cannot be adjusted；Work as high intensity
After U-shaped unlocking coded lock, the end of U-shape lock bar 1 is extracted from locking bar grafting body 205, thus locking bar grafting body 205 can rotate,
Now rotating rod lock grafting body 205 is rotated part 2028 and rotates, oblique by spiral between revolving part 2028 and impeller 2026
The effect in face, the rotary motion of revolving part 2028 is converted into the axial displacement of impeller 2026, overcomes the locating wheel 2022
The clamping convex 20222 of all of ring-type locating wheel 2022 is pushed away buckling groove 20211 by the elastic force of back-moving spring, makes ring-type password
Wheel 2021 and ring-type locating wheel 2022 depart from circumferential linkage status, and now rotating annular password wheels 2021 change ring-type password wheels
Original relative position between 2021 and ring-type locating wheel 2022, then reversely rotates locking bar grafting body 205, in locating wheel 2022
In the presence of the elastic force of back-moving spring, the clamping convex 20222 of ring-type locating wheel 2022 is again pushed into buckling groove 20211, is made
Ring-type password wheels 2021 and ring-type locating wheel 2022 reconstitute circumferential linkage status, complete the password regulation of coded lock.
In order to attractive in appearance and avoid dust from invading, lock body shell 201 is outer to be preferably also arranged with plastic casing 207, outside the plastics
One end of the corresponding locking bar grafting body 205 of shell 207 is rotatably provided with regulation spiral cover 208, the corresponding institute of the plastic casing 207
The position for stating the component of four password wheels 2021 is provided with rectangular window, the position of the outer correspondence rectangular window of the plastic casing 207
Gap is arranged with tubular password spiral cover 209, and the axially position of password spiral cover 209 is set, and password spiral cover 209 is provided with and the rectangle
The password regulation window of the rectangle that window size is adapted, usually can make password adjust window and institute by rotating password spiral cover 209
State the rectangular window on plastic casing 207 and stagger and closed, use preceding reverse rotation, you can expose rectangular window and unlocked
Operation.
Claims (4)
1. a kind of U-shaped coded lock of high intensity, including U-shape lock bar and lock body, the lock body include tubular metal lock body shell, coded lock
Component and stop component, the coded lock component include some groups of password wheel assemblies, mandrels, and the coded lock component is arranged on lock
In body shell, it is characterised in that：The stop component includes stop body, stop block and stop back-moving spring, footpath on the stop body
To locking bar jack is provided with, the cross sectional shape of the locking bar jack is Long Circle, the stop body more long along lock body shell axial direction
On be additionally provided with the groove matched with stop block, one end of the groove communicates with locking bar jack, and the stop block radial direction is slidably
Ground is set in a groove, and cross sectional shape coordinates with interporal lacuna in lock body shell after combination, and the stop body and stop block can axially be slided
One end of lock body shell endoporus is arranged on dynamicly, and the stop back-moving spring is arranged in lock body shell, and one end is against the stop body
On make the stop block have one to insertion U-shape lock bar upper latch notch axial elasticity power.
2. the U-shaped coded lock of high intensity according to claim 1, it is characterised in that：The bottom portion of groove is provided with vertical guide hole,
The stop block bottom is provided with the vertical guide pillar coordinated with vertical guide hole gap, and the vertical guide pillar is plugged in vertical guide hole.
3. the U-shaped coded lock of high intensity according to claim 1, it is characterised in that：The password wheel assembly includes that ring-type is close
Code wheel and ring-type locating wheel, the ring-type password wheels inner ring wall are provided with the radial direction clamping corresponding with outer surface pin marker position
Groove, to be provided with the clamping being adapted with buckling groove convex for the ring-type locating wheel cylindrical, and the convex cooperation of clamping makes in buckling groove
Ring-type password wheels and ring-type locating wheel form axially slidable, the circumferential composition password wheel assembly, the password of being connected
Wheel assembly is spaced apart and is rotatably located on mandrel, and the mandrel correspondence interval location is provided with positive stop lug boss, institute
Limited location boss is arranged in a linear vertically, and some password wheels components are spaced apart and are rotatably located on mandrel
Between positive stop lug boss, the inner hole wall of the ring-type locating wheel is equipped with section and leads to the axial direction that the positive stop lug boss gap coordinates
Groove；The coded lock component also includes a mounting bracket, and the mounting bracket is substantially in the form of a column, and middle part is provided with and password wheels group
The cavity volume that part matches, the cavity volume two ends are provided with the axis hole slippery with the mandrel, and the password wheel assembly passes through mandrel two
End is engaged in the cavity volume for being arranged on mounting bracket with axis hole respectively, and the mounting bracket is fixed in lock body shell endoporus；It is described
Fixed plate is fixed with lock body shell inwall, the other end carried on the back with the stop body phase in the fixed plate is provided with radially projecting
Bearing block, the coded lock component is fixedly installed in fixed plate, and the stop body end face relative with mandrel is provided with and core
The axial direction connection jack that shaft clearance coordinates, the hole wall of the connection jack is provided with card cavity volume, in the card cavity volume successively
Card spring and card are provided with, the mandrel end is provided with the draw-in groove matched with card, the mandrel end insertion connection jack
In, the card is snapped in draw-in groove, stop body is connected to form linkage with mandrel；Carried on the back with the stop body phase in lock body shell
The other end is provided with locking bar grafting body, and locking bar spliced eye, the section of the locking bar jointing holes are radially provided with the locking bar grafting body
Long Circle is shaped as, more long along lock body shell axial direction, locking bar spliced eye be arranged in parallel with locking bar jack；The coded lock component
Also include side throw-out collar and rotational alignment switching mechanism, side throw-out collar is circumferentially positioned, be axially movably set on mandrel, the side
The side end face of throw-out collar one is affixed with the ring-type locating wheel end face of most avris, and the rotational alignment switching mechanism can be along mandrel including one
Slide axially the impeller and a revolving part of setting, and the revolving part is circumferentially rotatable, be arranged on lock body shell to axially position
In, described impeller one end offsets with another side end face of side throw-out collar, the other end of the impeller and the revolving part
One end offsets, and the other end of the revolving part and the locking bar grafting body are connected circumferentially, the impeller and revolving part
At least one is provided with screw inclined plane in two end faces for offseting, so as to constitute password governor motion.
4. the U-shaped coded lock of high intensity according to claim 3, it is characterised in that：Annular pin in the coded lock component
Wheel interval setting, position corresponding with annular pin wheel is provided with the length that width matches with annular pin wheel gap on the lock body shell
Slotted eye, is provided with dividing strip between adjacent long slot bore, the part-circular periphery face of annular pin wheel is exposed from corresponding long slot bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364406.2A CN104948022B (en) | 2015-06-25 | 2015-06-25 | The U-shaped coded lock of high intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364406.2A CN104948022B (en) | 2015-06-25 | 2015-06-25 | The U-shaped coded lock of high intensity |
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| Publication Number | Publication Date |
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| CN104948022A CN104948022A (en) | 2015-09-30 |
| CN104948022B true CN104948022B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510364406.2A Active CN104948022B (en) | 2015-06-25 | 2015-06-25 | The U-shaped coded lock of high intensity |
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| CN (1) | CN104948022B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246187B (en) * | 2017-07-10 | 2019-02-12 | 深圳市公溢科技有限公司 | It is mechanical to become password Vehicle lock and its unlocking control system, method |
| CN107269137B (en) * | 2017-07-10 | 2019-02-12 | 深圳市公溢科技有限公司 | Auto-changing cipher antitheft umbrella and its unlocking control system, method |
| WO2019036837A1 (en) * | 2017-08-21 | 2019-02-28 | 深圳市公溢科技有限公司 | Mechanical vehicle lock allowing password to be changed, and unlocking control system thereof and method therefor |
| CN110259276A (en) * | 2018-03-12 | 2019-09-20 | 东洋建苍电机股份有限公司 | Switching device with induction unlocking function |
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| CN204715914U (en) * | 2015-06-25 | 2015-10-21 | 浙江中立集团有限公司 | The U-shaped coded lock of high strength |
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|---|---|---|---|---|
| TWM247658U (en) * | 2003-08-25 | 2004-10-21 | Jiun-De You | Lock specific for security inspection |
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|---|---|---|---|---|
| CN201225036Y (en) * | 2008-05-27 | 2009-04-22 | 许印楼 | Dialing tray type cipher lock capable of setting cipher optionally |
| CN102400598A (en) * | 2011-10-18 | 2012-04-04 | 金泰祥精密五金（昆山）有限公司 | Multifunctional combination padlock |
| CN202596305U (en) * | 2012-04-25 | 2012-12-12 | 谭耀新 | Automobile coded lock |
| CN202990611U (en) * | 2012-12-19 | 2013-06-12 | 宁波裕泰锁业有限公司 | Anti-impact-unlocking combination padlock |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104948022A (en) | 2015-09-30 |
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