CN104196337B - A kind of lockhole protective cover device used on electronic lock - Google Patents
A kind of lockhole protective cover device used on electronic lock Download PDFInfo
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- CN104196337B CN104196337B CN201410417428.6A CN201410417428A CN104196337B CN 104196337 B CN104196337 B CN 104196337B CN 201410417428 A CN201410417428 A CN 201410417428A CN 104196337 B CN104196337 B CN 104196337B
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- key lid
- keyhole
- control gear
- electric control
- bearing
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- 230000001939 inductive effect Effects 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims description 7
- 230000001960 triggered effect Effects 0.000 claims description 6
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- 230000000903 blocking effect Effects 0.000 claims 1
- 239000012467 final product Substances 0.000 claims 1
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000002354 daily effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005474 detonation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 1
- 244000153158 Ammi visnaga Species 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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Abstract
A kind of lockhole protective cover device used on electronic lock, keyhole 2 that this device includes being positioned on lock panel 1, key lid 3, inductive switch 4, electric control gear 5, electronic controller 6；Wherein key lid cover keyhole and with the buckle structure in keyhole with the use of, inductive switch is responsible for sensing key lid and is unlocked action, electronic controller is responsible for controlling electric control gear, electric control gear is responsible in the energized state key lid being stuck in keyhole and cannot being unlocked, and when electronic controller fault or when obtaining corresponding open command, electric control gear will not affect that the unlatching of keyhole in the power-off state.The present invention adopts this kind of mode, namely do not affect the daily normal use of existing electronic lock, the malicious sabotage to keyhole can be prevented again, and when electronic controller fault, again can direct unlocking key lid, do not affect the dual purpose of use after playing daily protection and fault.
Description
Technical field
The present invention relates to electronic lock, be specifically related on a kind of electronic lock use lockhole protective cover device.
Background technology
Electronic lock has obtained extensive use in numerous places, compares traditional mechanical door lock and has more the advantage of anti-technology unlocking.General electronic lock is all storage battery power supply because of what adopt, daily standby power consumption amount is required relatively strict, often adopts the locked mode of power-off to process, once accumulator actual effect or electronic lock electronic failure, then it may happen that situation about cannot open the door.Native land man standard-required, electronic lock all necessarily requires have emergency machine lockhole, when cannot open the door when electronic section breaks down, then can open mechanical lock by mechanical key.But, owing to emergency machine lockhole possesses the problem can unblanked under free position, thus becoming the upper maximum potential safety hazard of electronic lock application, real life also occurs numerous problems adopting mechanical measures illegally to unblank by emergency key hole.
For solving the problems referred to above, Chinese patent Authorization Notice No. CN202266107U proposes " a kind of electronic lock with emergent numerical control lock core ", adopt numerical control lock core to substitute traditional mechanical lock, solve the problem that daily emergency machine lock core is adopted mechanical system illegally to unblank by lawless person.But in this patent, the self-protection function of numerical control lock core being had problems, keyhole is easily broken, as poured into keyhole with seccotine, or insert keyhole etc. with toothpick；And daily can also utilize technological means pass through keyhole illegally configure machinery key mould so that can illegally be opened lock body when electronic lock breaks down.
Summary of the invention
For overcoming above-mentioned deficiency, it is an object of the invention to provide, to this area, the key lid preventer used on a kind of electronic lock so that it is solve the above-mentioned technical problem run in existing electronic lock.Its objective is to be realized by below scheme.
A kind of lockhole protective cover device used on electronic lock, keyhole 2 that this device includes being positioned on lock panel 1, key lid 3, inductive switch 4, electric control gear 5, electronic controller 6；Wherein key lid cover keyhole and with the buckle structure in keyhole with the use of, inductive switch is responsible for sensing key lid and is unlocked action, electronic controller is responsible for controlling electric control gear, electric control gear is responsible in the energized state key lid being stuck in keyhole and cannot being unlocked, and when electronic controller fault or when obtaining corresponding open command, electric control gear will not affect that the unlatching of keyhole in the power-off state.
Described key lid cover keyhole and with the buckle structure in keyhole with the use of, including: key lid directly sticks in keyhole, and coordinates with electric control gear and connect and fix,；May be used without key lid one end and keyhole to be fixed by pin, the other end coordinates with electric control gear and connects and fixes；May be used without key lid be rotated in keyhole and connect and fix with electric control gear；Key lid also can be adopted to be rotated in keyhole and connect and fix with the stopper slot in keyhole.
Described inductive switch is touch-switch, proximity switch, soft-touch control, pressure sensitive switch.
Described electric control gear is the minitype electromagnet or motor composition that clamp, spring and a kind of power-off rear bearing stretch out, the rear bearing that is energized is retracted, wherein:
During original state lower electromagnet power-off, bearing is hampered by clamp and cannot normally stretch out, and the grab on clamp is stuck in the draw-in groove on key lid by spring effect so that key lid cannot take out；
When clamp moves to hole clipping thereon to when living position of bearings, bearing stretches out under electric magnet off-position, sticks in hole clipping so that clamp cannot recover original closed mode and key lid is unlocked；
And if bearing is retracted or keeps retracted mode during electric magnet energising, clamp can be recovered original state by spring effect, sticks in the draw-in groove on key lid, continues to keep key lid to be closed.
The key lid protective device structure principle used on a kind of electronic lock of the present invention is simple, adopt this kind of mode, namely the daily normal use of existing electronic lock is not affected, the malicious sabotage to keyhole can be prevented again, and when electronic controller fault, again can direct unlocking key lid, do not affect the dual purpose of use after playing daily protection and fault.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram being mounted with key lid preventer on a kind of electronic lock of the present invention.
Fig. 2 be the present invention Fig. 1 in the part detonation configuration schematic diagram of key lid preventer.
When Fig. 3 is that in Fig. 1, key lid is pressed, electric control gear leads to electrically driven (operated) cross-sectional view.
The structural representation of electric control gear and key lid when Fig. 4 is that in Fig. 3, key lid key lid is opened.
Fig. 5 is the positor structural representation that in Fig. 3, key lid preventer is with.
Fig. 6 is the part detonation configuration schematic diagram of another kind of key lid preventer.
Fig. 7 is the cut-away section structural representation in Fig. 6 in electronic lock.
Fig. 8 is the structural representation of another kind of key lid preventer.
Fig. 9 is the cut-away section structural representation in Fig. 8 in electronic lock.
Figure 10 is that a kind of electric control gear, inductive switch etc. are installed on the organigram in key lid.
Specific implementation method
Below with reference to drawings and Examples, the invention will be further described.
Embodiment one, as it is shown in figure 1, be mounted with the overall structure schematic diagram of key lid preventer on a kind of electronic lock of the embodiment of the present invention；Electronic lock, by lock panel 1, keyhole 2, dead bolt 102, handle 103, the controller 104 and be arranged in the mechanical lock 106 of keyhole and collectively form of swiping the card, is installed in door body 105.It will be seen that key lid 3 covers keyhole.
It is appreciated that, the authorization of this electronic lock can also include other structures, as increased fingerprint recognition mandate, bluetooth connection, code keypad, iris identification, speech recognition etc., with upper type be all in existing electronic lock frequently with mandate recognition mode, this present invention is not limited as.
Be appreciated that this electronic lock can also comprise other structure, as the Shock inductor of tamper-proof picking lock, Tiandi lock hook, alarm module etc., constructed above be all in existing electronic lock frequently with structure, this present invention is not limited as.
The electric power system of self being appreciated that this electronic lock can be an entirety with the electric power system of key lid preventer, it is also possible to individually separate, and this present invention is not limited as.
It is appreciated that the fit system of this key lid and keyhole is more, as key lid directly sticks in keyhole, and coordinates with electric control gear and connect and fix, as shown in Figure 2；May be used without key lid one end and keyhole to be fixed by pin, the other end coordinates with electric control gear and connects and fixes；May be used without key lid be rotated in keyhole and connect and fix with electric control gear, as shown in Figure 6；Key lid also can be adopted to be rotated in keyhole and connect and fix with the stopper slot 202 in keyhole, as shown in Figure 8.Different from the make of keyhole based on key lid, fixed form is also not quite similar, but on the basis of aufbauprinciple of the present invention, the present invention emphasize for key lid fixing after cover keyhole, key lid must be opened when needs use keyhole；Connecting structure to this this key lid Yu keyhole, is regarded as protection scope of the present invention.
Fig. 2 is the part detonation configuration figure of a kind of key lid preventer in Fig. 1.Where it can be seen that include lock panel 1, the keyhole 2 that is positioned on lock panel, key lid 3, inductive switch 4, electric control gear 5, electronic controller 6；This key lid has the draw-in groove 301 coordinated with electric control gear, the spacing block set 302 coordinated with stopper slot in keyhole 202.This electric control gear is made up of electric magnet 501, clamp 502, spring 503, and clamp upper end coordinates with inductive switch.
Being appreciated that when this key lid is touched that inductive switch is triggered and can have various ways, also such as key lid directly triggers inductive switch, or the distance between key lid and inductive switch changes；The constituted mode of this inductive switch also has multiple, it is possible to for touch-switch, proximity switch, soft-touch control, pressure sensitive switch etc.；When what the present invention emphasized is only shake-up key lid, inductive switch can be triggered, and this is regarded as protection scope of the present invention.
This electric magnet 501 is stretched out by contained spring 512 promotion for a kind of power-off rear bearing, the minitype electromagnet that energising rear bearing is retracted, as shown in Figure 3.Being appreciated that the electric magnet with this kind of functional characteristic and motor are more, constituted mode is also not quite similar, and as magnetic material can be adopted as bearing, utilizes magnetic to repel each other the principle spring to substitute in electric magnet.To this, electric magnet or the motor with this type of functional characteristic are regarded as protection scope of the present invention.
Under original state, electric magnet power-off, bearing 511 is hampered by clamp, and contained spring 512 is compressed, and the grab 521 on clamp is promoted in the draw-in groove being stuck in downwards on key lid by spring 503 so that key lid cannot take out.
Being appreciated that when key lid pushes for convenience, clamp can fall into after being moved upward by promotion in draw-in groove, this grab is a ramp structure or globoidal structure, as shown in Figure 3.
When key lid is pressed, the ramp formation being promoted clamp by draw-in groove makes clamp move upward, spring 503 pressurized tightens, clamp touch inducing inductive switching, electronic controller is powered to electric magnet under normal circumstances and keeps, bearing is in retracted mode, it is impossible to stick into the hole clipping 522 being arranged on clamp, as shown in Figure 3；Now unclamping key lid, clamp is promoted downwards by spring 503, returns in the draw-in groove of key lid, still blocks key lid so that it is can not be unlocked.
And when inductive switch fault or electronic controller faults itself, also or find that electronic lock is when breaking down, after pressing key lid, the draw-in groove of clamp key lid upwardly and out, electronic controller will not be powered to electric magnet, and electromagnet shaft bears spring 512 promotion and sticks in hole clipping 522；Unclamping key lid, clamp is blocked cannot move downward by bearing, and namely key lid can be taken off, and is the structural representation of electric control gear and key lid when key lid is opened as shown in Figure 4.
It is appreciated that this electronic controller is responsible for receiving the key lid trigger message that inductive switch sends, and provides power supply to electric control gear or connect the supply line of electric control gear.This electronic controller finds that electronic lock breaks down, it is possible to understand that fails to receive, for this electronic controller, the correct instruction that the control system of electronic lock self sends, or receives control system failure information.This electronic controller is actual can be combined with the control system of original electronic lock self, or becomes a part of hardware or the software of original control system, becomes a complete entirety with original control system globe area.This is regarded as protection scope of the present invention.
It is appreciated that on this electronic lock and is mounted with in key lid preventer, it is also possible to be controlled without electronic controller, directly when inductive switch is triggered, namely connected the supply line of electric control gear by inductive switch, it is also possible to reach to control accordingly effect；When power supply goes wrong, namely mean that electronic door lock system lost efficacy, now key lid preventer namely lost efficacy therewith, can directly open key lid and be unblanked by keyhole.This also be should be regarded as protection scope of the present invention.
It is appreciated that the constituted mode of this kind of electric control gear can have multiple, when basic structure principle is constant, it is possible to realized by multiple concrete component in practice, this all should be considered as protection scope of the present invention.
Being appreciated that in this kind of electric control gear, it is also possible to increasing positor 7 and construct, after clamp is blocked by bearing, available positor makes bearing retract, and clamp falls, key lid preventer uses by capable of circulation repetition.The constituted mode of this positor has multiple, as utilized spring and shaft-like protruding combination, when key lid departs from keyhole, spring promotes shaft-like projection to move downward, the triangular form projection being positioned at positor upper end will promote bearing to retract so that clamp falls after departing from bearing, as shown in Figure 5；Also or utilize and artificial promote shaft-like projection movement so that the mode that bearing departs from clamp also may be used.This positor relative configurations also should belong to protection scope of the present invention at this.
Utilizing this kind of mode, under even in everyday situations, key lid is blocked cannot take out by clamp, and electric magnet is without power supply；And when running into unauthorized person and destroying, electric magnet energising rear bearing can be passed through again and with clamp disengaging, key lid still cannot be unlocked；And once electronic controller fault, then can direct unlocking key lid, unblanked by mechanical key.
Embodiment two, the present embodiment and embodiment one are distinctive in that, electric control gear stretches out for one energising rear bearing, and the minitype electromagnet 504 of power-off rear bearing auto retractable, bearing front end has the grab 541 that can coordinate with the draw-in groove 301 on key lid；Key lid is that rotation sticks in keyhole, and with the clamping of bearing front end；It is the detonation configuration schematic diagram that this electric control gear coordinates with key lid and keyhole as shown in Figure 6.
It will be seen that the spacing block set 302 on key lid is by screwing in the stopper slot 202 of keyhole in figure, and is coordinated by the grab 541 of draw-in groove 301 with electromagnet shaft brought forward end and be stuck so that key lid and cannot open.
It is this electric control gear as shown in Figure 7 with key lid with the use of sectional structural map when closing.
When daily key lid is in closedown, electric magnet 504 is in off-position, and the draw-in groove 301 that key covers on spacing block set coordinates with the grab 541 of electromagnet shaft brought forward end so that key lid cannot rotarily open, and also makes bearing to retract simultaneously.
From this structural map it is understood that after this key lid is pressed, can being arranged in keyhole by triggering and be in the inductive switch of key cover back-end, draw-in groove 301 and grab 541 depart from；If electronic controller is normal, being energized to electric magnet 504, bearing keeps stretching out state, is still blocked by grab 541 and cannot rotarily open when key lid unclamps；If during electronic controller fault, then electric magnet 504 supply line not can turn on, and bearing is retracted, key this can rotarily open when unclamping.
Compared with embodiment one, under the premise reaching identical function, the electric control gear structure adopted in the present embodiment is relatively simple, has still functioned as the effect of key lid security protection.
Embodiment three, the present embodiment and embodiment two are distinctive in that, electric control gear stretches out for one energising rear bearing, the minitype electromagnet 505 of power-off rear bearing auto retractable.
Under daily state, this electromagnet shaft is accepted insurance and is held retracted mode；When key lid is pressed or is rotated, inductive switch will be triggered；Now if electronic controller is normal, being energized to electric magnet 505, bearing stretches out in the draw-in groove 301 sticked on key lid, stops key lid to rotarily open；If during electronic controller fault, electric magnet 505 does not work, and continues to rotate key lid and can open.Be the electric control gear of this kind of structure and the organigram of key lid such as Fig. 8, Fig. 9 is sectional structural map during electric control gear and the closedown of key lid of this kind of structure.
Embodiment four, the present embodiment and previous embodiment are distinctive in that, the electric magnet in composition electric control gear stretches out for a kind of forward energising rear bearing, and reversely energising rear bearing is retracted, and during power-off, bearing can keep electric magnet or the motor structure of standing state.
When inductive switch is triggered, electronic controller can disconnect after electric magnet brief energization, and electric magnet can rely on and self keep bearing to stretch out or retracted mode, and when needs are opened, only needing electronic controller to provide reverse power supply, electric magnet bearing can be retracted accordingly or stretch out.Adopt this kind of mode, then when being subject to artificial destruction, can at utmost reduce power consumption so that electronic lock can keep work for a long time.
Embodiment five, the present embodiment and previous embodiment are distinctive in that, the composition inductive switch 4 of lockhole protective cover device, electric control gear 5, electronic controller 6 may be mounted on key lid, or a part is arranged on key lid, as electric control gear is arranged on key lid, by contacting or cordless acquisition power supply and control etc..Electric control gear can block the draw-in groove on keyhole and key lid cannot be taken out.It is a kind of structural representation being installed on by electric control gear in key lid as shown in Figure 10.
Adopt this kind of mode, then make lockhole protective cover independently become a complete entirety, and be independent of electronic lock and be controlled power supply etc..This constituted mode and control principle may refer to described previously, do not repeat them here.
In sum, above the key lid preventer used on a kind of electronic lock provided by the present invention is described in detail, principles of the invention and implementation are set forth by part specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all having certain change in specific embodiments and applications, this specification content should not be construed as limitation of the present invention.
Claims (9)
1. the lockhole protective cover device used on electronic lock, keyhole (2) that this device includes being positioned on lock panel (1), key lid (3), inductive switch (4), electric control gear (5), electronic controller (6)；Wherein key lid cover keyhole and with the buckle structure in keyhole with the use of, inductive switch is responsible for sensing key lid and is unlocked action, electronic controller is responsible for controlling electric control gear, electric control gear is responsible in the energized state key lid being stuck in keyhole and cannot being unlocked, and when electronic controller fault or when obtaining corresponding open command, electric control gear will not affect that the unlatching of keyhole in the power-off state.
2. lockhole protective cover device as claimed in claim 1, it is characterised in that described key lid cover keyhole and with the buckle structure in keyhole with the use of, including: key lid directly sticks in keyhole, and coordinates with electric control gear and connect and fix；Or adopting key lid one end and keyhole to be fixed by pin, the other end coordinates with electric control gear and connects and fixes；Or adopt key lid be rotated in keyhole and connect and fix with electric control gear；Also or adopt key lid be rotated in keyhole and connect and fix with the stopper slot in keyhole.
3. lockhole protective cover device as claimed in claim 1, it is characterized in that described inductive switch is responsible for the sensing key lid action that is unlocked and is included: key lid directly triggers inductive switch, or key lid makes electric control gear motion trigger inductive switch, or the distance between key lid and inductive switch changes and makes inductive switch be triggered, go back or External Force Acting sensed switch when key covers is sensed.
4. lockhole protective cover device as claimed in claim 1, it is characterised in that described inductive switch is touch-switch, proximity switch, soft-touch control, pressure sensitive switch.
5. lockhole protective cover device as claimed in claim 1, it is characterised in that described electric control gear is the minitype electromagnet or motor composition that clamp, spring and a kind of power-off rear bearing stretch out, the rear bearing that is energized is retracted, wherein:
During original state lower electromagnet power-off, bearing is hampered by clamp and cannot normally stretch out, and the grab on clamp is stuck in the draw-in groove on key lid by spring effect so that key lid cannot take out；
When clamp moves to hole clipping thereon to when living position of bearings, bearing stretches out under electric magnet off-position, sticks in hole clipping so that clamp cannot recover original closed mode and key lid is unlocked；
And if bearing is retracted or keeps retracted mode during electric magnet energising, clamp can be recovered original state by spring effect, sticks in the draw-in groove on key lid, continues to keep key lid to be closed.
6. lockhole protective cover device as claimed in claim 5, it is characterised in that described electric control gear also includes positor, after clamp is blocked by bearing, by utilizing positor to make bearing retract, clamp recovers original position after departing from bearing.
7. lockhole protective cover device as claimed in claim 1, it is characterised in that described electric control gear is that a kind of power-off rear bearing is retracted, and minitype electromagnet or motor that energising rear bearing stretches out are constituted, wherein:
During original state lower electromagnet power-off, bearing is retracted or stretches out by being stuck after being positioned at the card slot fit on the grab of bearing front end and key lid；
When the solenoid is energized, bearing and in the extended draw-in groove sticked on key lid or keep stretch out, make key lid to be removed；
And if during electric magnet no power, after making the draw-in groove on key lid depart from the grab on bearing or bearing, getting final product unlocking key lid.
8. lockhole protective cover device as claimed in claim 1, it is characterised in that described electric control gear stretches out for a kind of forward energising rear bearing, and reversely energising rear bearing is retracted, and during power-off, bearing can keep the minitype electromagnet of standing state or motor to constitute；Or adopt this type of minitype electromagnet or motor and clamp and spring to collectively form.
9. lockhole protective cover device as claimed in claim 1, it is characterised in that described electric control gear is installed on key when covering, electric control gear is responsible for stretching out from key lid in the energized state the draw-in groove blocking on keyhole and key lid is fixed cannot take out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417428.6A CN104196337B (en) | 2014-08-24 | 2014-08-24 | A kind of lockhole protective cover device used on electronic lock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417428.6A CN104196337B (en) | 2014-08-24 | 2014-08-24 | A kind of lockhole protective cover device used on electronic lock |
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| CN104196337A CN104196337A (en) | 2014-12-10 |
| CN104196337B true CN104196337B (en) | 2016-07-06 |
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| CN201410417428.6A Expired - Fee Related CN104196337B (en) | 2014-08-24 | 2014-08-24 | A kind of lockhole protective cover device used on electronic lock |
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| CN104821028B (en) * | 2015-05-18 | 2017-11-24 | 广州市我家网络科技有限公司 | A kind of internet household bodyguard's information service system for sharing information |
| CN104831998B (en) * | 2015-05-18 | 2017-11-24 | 广州市我家网络科技有限公司 | A kind of security device of intelligent antitheft mechanical lock |
| CN104835227B (en) * | 2015-05-18 | 2017-12-22 | 广州市我家网络科技有限公司 | A kind of intelligent security protection equipment |
| CN107386802A (en) * | 2016-05-17 | 2017-11-24 | 广东金点原子制锁有限公司 | A kind of tapered end cover |
| CN106013975B (en) * | 2016-08-01 | 2018-09-25 | 成都泰然科技有限公司 | Intelligent lock protector and shield lock system |
| CN107100433A (en) * | 2017-04-17 | 2017-08-29 | 应加进 | Anti- technology opens clutch case |
| CN107516362A (en) * | 2017-08-18 | 2017-12-26 | 广州供电局有限公司 | Unlocking method, apparatus and system |
| CN108711211A (en) * | 2018-08-08 | 2018-10-26 | 邱宇 | A kind of intelligent fingerprint lock that can remotely receive finger print information |
| CN110847712B (en) * | 2019-11-26 | 2020-08-21 | 大连天诚电力科技有限公司 | Intelligent door lock |
| CN111997439B (en) * | 2020-09-22 | 2022-09-23 | 广州朗国电子科技股份有限公司 | Intelligent door lock and intelligent door |
| CN114148289B (en) * | 2021-12-20 | 2024-01-23 | 重庆澳腾汽车部件有限责任公司 | Automobile door lock |
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| CN204081690U (en) * | 2014-08-24 | 2015-01-07 | 武汉普林光通科技有限公司 | The lockhole protective cover device that a kind of electronic lock uses |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011160628A1 (en) * | 2010-06-21 | 2011-12-29 | Access Technology | An electronic lock device |
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|---|---|---|---|---|
| US5996383A (en) * | 1996-07-31 | 1999-12-07 | Emhart, Inc. | Lockset with motion detection and ambient light sensors |
| CN101922263A (en) * | 2010-04-24 | 2010-12-22 | 徐飞鹤 | Lock hole cover |
| CN102206969A (en) * | 2011-03-01 | 2011-10-05 | 深圳市纽贝尔电子有限公司 | Overlap intelligent security lock |
| CN204081690U (en) * | 2014-08-24 | 2015-01-07 | 武汉普林光通科技有限公司 | The lockhole protective cover device that a kind of electronic lock uses |
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| CN104196337A (en) | 2014-12-10 |
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