CN104612480B - Point touch type electronic cam lock - Google Patents
Point touch type electronic cam lock Download PDFInfo
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- CN104612480B CN104612480B CN201410851069.5A CN201410851069A CN104612480B CN 104612480 B CN104612480 B CN 104612480B CN 201410851069 A CN201410851069 A CN 201410851069A CN 104612480 B CN104612480 B CN 104612480B
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Abstract
The invention relates to a point touch type electronic cam lock which is designed to solve the technical problems that in existing similar cam lock products, the electronic control opening mode is unavailable, and the structural design is poor. The electronic cam lock comprises a handheld controller, a gripper, a lock body assembly and an electronic control box. The electronic cam lock is characterized in that a lock body magnet is arranged in an inner cylinder hole of a lock cylinder of the lock body assembly, a probe is arranged on the periphery of a base hole of the electronic control box, the end, stretching out of the electronic control box, of the probe penetrates through a probe hole in the gripper and abuts against a skirt on the outer edge of the base hole, a lock groove of the gripper is buckled with a lock hook at one end of a sliding block in a notch in one side of the handheld controller, and a clamping plate on the edge of a control circuit board abuts against the gripper; a handle is combined with the lock cylinder in a sleeving mode, a steel bolt locking device and the lock body magnet in the lock cylinder in the using state of the handle are opposite to an open groove of the handle and a control box magnet in the electronic control box simultaneously, and the lock body magnet is partially inserted in the open groove of the handle. The point touch type electronic cam lock is suitable for an electrical cabinet door.
Description
Technical field
The present invention relates to electronic cabinet lock, be that a kind of point contact type turns tongue electronic lock.
Background technology
Cam lock, or title cam lock, it is a kind of lockset being controlled lock rotation pinning by internal structure, is divided into according to the difference of its pinning structure: Flos Mume spring lock, blade cam lock, triangle cam lock, double sides pellet cam lock etc., it is mainly used in the regulator cubicle door of metal.And electronic lock be a kind of by swiping the card, the mode such as fingerprint, password access Lock control system, thus control the Guan Bi of mechanical switch, complete to unblank, the electronic product of locking task or lockset product；Its kind, various structures, have easy circuit product, also has the product that cost performance based on chip is higher.Wherein, some cam locks controlling equipment bin at electric field use electronic lock to replace traditional mechanical type cam lock, improve its safety.The ZL patent No. 93202247.2 as disclosed in Chinese patent literature, authorized announcement date on November 24th, 1993, utility model title " double tongue pin electronic lock "；This electronic lock includes outer attic base, interior attic base, clutch lock control mechanism, main tongue pin, auxiliary lock control mechanism, auxiliary drive gear, auxiliary tongue pin, wherein clutch lock control mechanism includes surface cam, barb, solenoid, video disc, double wedge, it is energized by input through keyboard cipher control solenoid, video disc is attracted to make the concave tooth of barb engage with double wedge, both the outer handle of turn main tongue pin can be inserted kingpin bore, simultaneously by auxiliary lock control mechanism, auxiliary tongue pin can be inserted auxiliary pin-and-hole and realize action of locking a door again；Make solenoid power-off again, the shaggy tooth part of clutch lock control mechanism from, outer handle is i.e. in idling conditions.But the unlocking manner of above-mentioned electronic lock is the most single, mainly realizes by the way of Password Input, thus its production cost is higher, it is more difficult to applies in regulator cubicle door and promotes.
Summary of the invention
For overcoming above-mentioned deficiency, it is an object of the invention to provide a kind of point contact type to turn tongue electronic lock to this area so that it is solve Electronic Control opening ways shortcoming in existing similar cam lock product, the technical problem that structure design is not good enough.Its objective is to be achieved through the following technical solutions.
A kind of point contact type turns tongue electronic lock, this turns tongue electronic lock and includes hand held controller, pull-tab device, lock body assembly, Electronic Control Box, steel bolt, described steel bolt is fixed on lock core one end of lock body assembly by screw, it is provided with lock core in the pedestal of lock body assembly, lock core is connected with one end of handle, and the other end of handle stretches out pedestal；Its structure designing points is the pedestal external diameter that described Electronic Control Box is arranged at lock body assembly by installing nut, pull-tab device one end of pedestal external diameter is limited in the shirt rim, outer, aperture of pedestal simultaneously, the lock core inner chip hole of lock body assembly is provided with lock body Magnet, the external diameter of lock core is provided with lock core back-moving spring, and lock core back-moving spring flange collar and handle with lock core external diameter respectively offsets；The base aperture periphery of Electronic Control Box is provided with probe, the probe one end stretching out Electronic Control Box offsets through the probe aperture of pull-tab device and the shirt rim, outer, aperture of pedestal, it is provided with electromagnetic valve in Electronic Control Box, controls box Magnet and control box wiring board, under steel bolt locking state, the control box Magnet in electromagnetic valve is relative with the lock body Magnet in lock body assembly, lock body Magnet is moved by control box Magnet effect and makes lock core be connected as a single entity with handle, controls box wiring board and is provided with MCU module, on-off circuit module and ID lock module；The other end of pull-tab device is provided with locked groove, this end outwards tilts, the locked groove of pull-tab device fastens with the latch hook of notch inner slide one end, hand held controller side, the clamp on controller line edges of boards edge offsets with pull-tab device, the latch hook end of slide block one end is provided with slide block back-moving spring, controller line plate, battery and clamp are arranged in hand held controller, and hand held controller is provided with button, and controller line plate is provided with memory module, signaling module and induction coil.Wherein, hand held controller part is power pack, and pull-tab device is coupling part, and Electronic Control Box is executable portion；Hand held controller is indirectly connected with Electronic Control Box by pull-tab device, again by powering to Electronic Control Box after signal determining, electromagnetic valve action in Electronic Control Box, it is connected by control box Magnet and lock core Magnet between band fixed handle and lock core, thus rotary handle just can drive the rotation of steel bolt to realize open and close function.Meanwhile, the power supply between hand held controller and pull-tab device/communication connection mode is fixed by snap, convenient disassembly；The signaling module of controller line plate uses bluetooth module, electronic cards to swipe the card module or numerical ciphers input module, starts hand held controller the most by the way to the power supply of Electronic Control Box and signal transmission.
Linking between above-mentioned control box Magnet and lock core Magnet drives lock core Magnet energized phase in lock core to aspirate dynamic realization by control box Magnet, connected mode between handle and lock core uses and controls attracting between box Magnet and lock core Magnet to make lock core Magnet screens handle inside diameter slot lock tight, or lock core Magnet is inserted through the locking of handle through hole.Wherein, this concrete structure turning tongue electronic lock is: the Quan Kou side, handle upper lock core side of described lock body assembly is provided with open slot, handle and lock core fit, under handle use state, the lock body Magnet in lock core is the most relative with the control box Magnet in the open slot of handle, Electronic Control Box, and lock body magnet segment inserts the open slot of handle.I.e. it is positioned under locking state when steel bolt, control box Magnet in electromagnetic valve is relative with the lock body Magnet in lock body assembly, the open slot of handle is inserted now by electromagnetic valve and control box iron core band movable lock core Magnet, this lock core turning tongue electronic lock can be connected as a single entity with handle, even if otherwise turning handle, handle is also simply in idle running.
Described Electronic Control Box is provided with three probes being distributed in isoceles triangle form point, and probe fastens with needle tray hole in the control box protecgulum of Electronic Control Box respectively, is provided with isolation pad between probe and control lid plate.Thus directly power supply and signal transmission all use three contact point mode of probe to realize between hand held controller and pull-tab device, power supply shares by one with signal.
Probe in described Electronic Control Box is that the syringe needle of telescopic elastic probe, i.e. probe inserts in needle stand, and offsets with the probe springs in needle stand, and the external diameter of needle stand is provided with probe flange collar.Thus while the power supply/communication between Electronic Control Box with pull-tab device is connected by resilient probe, above-mentioned probe structure can the door-plate of flexible adaptation multi-thickness.
The handle one end stretching out pedestal in described lock body assembly is turn-button end, and the turn-button end of handle tilts to lopsidedness, and the turn-button end ovalize of handle is provided with sealing ring and steel wire collar between external diameter and the internal diameter of pedestal of handle.Consequently facilitating after lock body assembly is opened, by the turn-button end rotating opening steel bolt of handle；Sealing ring and steel wire collar are for handle fixing in pedestal, and the sealing and dustproof in pedestal.
The handle side of described lock body assembly is provided with steel ball hole, is provided with positioning ball spring and positioning ball in steel ball hole, and positioning ball is offseted by the hole, location of positioning ball spring with pedestal.Said structure is easy to handle location in the latched condition, and i.e. steel bolt is when locking states, turning handle, hears a sound of " touching ", illustrates that the lock body Magnet of the lock core control box Magnet with Electronic Control Box is for relative position.
The button of described hand held controller offsets with the other end of slide block, the rotating shaft two ends in the middle of slide block be arranged at hand held controller in symmetrically arranged backbone block.Thus by mechanically pressing button, and the rotating shaft in the middle of slide block realizes the rotation of slide block, i.e. complete latch hook on slide block and the fastening of locked groove in pull-tab device and disengagement.
On described hand held controller, the signaling module of controller line plate is bluetooth module.Hand held controller judges whether to power to Electronic Control Box, is by transmitting instructions to Electronic Control Box realization after hand held controller connection pull-tab device；And the bluetooth module of controller line plate is easy to determine that Electronic Control Box is powered and signal transmits by the mandate between smart mobile phone and hand held controller, i.e. realized by Blue-tooth communication method mandate.
Meanwhile, turn the feature of tongue electronic lock according to above-mentioned this, described hand held controller and pull-tab device or be connected as a single entity；And described pull-tab device and lock body assembly or be connected as a single entity, above-mentioned this can be realized equally and turn the operation principle of tongue electronic lock.
Present configuration is reasonable in design, install, easy to use, production cost is low, and the linkage between each parts is effective；Be suitable as the point contact type of regulator cubicle door to turn tongue electronic lock and use, ex hoc genus anne the further improvement of product.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram of the present invention.
Fig. 2 is the hand held controller detonation configuration schematic diagram of the present invention.
Fig. 3 is the lock body assembly detonation configuration schematic diagram of the present invention.
Fig. 4 is the Electronic Control Box detonation configuration schematic diagram of the present invention.
Fig. 5 is the original state sectional structure schematic diagram of the present invention, omits hand held controller in figure.
Fig. 6 is the "on" position sectional structure schematic diagram of the present invention, omits hand held controller in figure.
Fig. 7 is state of the installing and using sectional structure schematic diagram of the present invention, omits hand held controller in figure.
Fig. 8 is the side-looking part detonation configuration schematic diagram of Fig. 7, and in figure, A portion is confined.
Fig. 9 is the A portion structure for amplifying schematic diagram of Fig. 8.
Figure 10 is the latch hook disengaged condition sectional structure schematic diagram of Fig. 9.
nullFigure number and title: 1、Hand held controller，101、Controller upper cover，102、Controller line plate，103、Battery，104、Controller lower cover，105、Fixing screw，106、Button，107、Plate tapping screw，108、Slide block back-moving spring，109、Slide block，110、Clamp，111、Backbone block，2、Pull-tab device，3、Lock body assembly，301、Handle，3011、Open slot，302、Sealing ring，303、Steel wire collar，304、Lock core，305、Lock body Magnet，306、Lock core reduction torsion spring，307、Pedestal，308、Positioning ball spring，309、Positioning ball，4、Electronic Control Box，401、Control box protecgulum，402、Probe，403、Isolation pad，404、Electromagnetic valve，405、Control box Magnet，406、Control lid plate，407、Lid tapping screw，408、Control box wiring board，5、Nut is installed，6、Steel bolt，7、Screw，8、Door-plate.
Detailed description of the invention
In conjunction with accompanying drawing, present configuration and use are further described.As shown in Fig. 1～Fig. 5, Fig. 8, this turns tongue electronic lock and includes hand held controller 1, pull-tab device 2, lock body assembly 3, Electronic Control Box 4.Wherein, the controller upper cover 101 of hand held controller fastens with controller lower cover 104, and fixed by fixing screw 105, controller line plate 102, battery 103, slide block back-moving spring 108, slide block 109, clamp 110, backbone block 111 it is provided with in hand held controller, slide block is arranged in the side notch of hand held controller, one end of slide block is provided with latch hook end, and the opposite side of latch hook end is provided with slide block back-moving spring, and the controller of hand held controller is covered with button 106；Button is positioned at the other end of slide block, and button offsets with this end of slide block, the rotating shaft two ends in the middle of slide block be arranged at hand held controller in symmetrically arranged backbone block；Being additionally provided with clamp in the notch of hand held controller, clamp is positioned at the edge of controller line plate.Lock body assembly includes handle 301, sealing ring 302, steel wire collar 303, lock core 304, lock body Magnet 305, lock core reduction torsion spring 306, pedestal 307, positioning ball spring 308, positioning ball 309, steel bolt 6 is fixed on lock core one end of lock body assembly by screw 7, it is provided with lock core in the pedestal of lock body assembly, lock core inner chip hole is provided with lock body Magnet, the external diameter of lock core is provided with lock core back-moving spring, lock core back-moving spring flange collar and handle with lock core external diameter respectively offsets, lock core is connected with one end fit of handle, and the other end of handle stretches out pedestal.Meanwhile, the handle one end stretching out pedestal in lock body assembly is turn-button end, and the turn-button end of handle tilts to lopsidedness, and the turn-button end ovalize of handle is provided with sealing ring and steel wire collar between external diameter and the internal diameter of pedestal of handle；Handle side is provided with steel ball hole, is provided with positioning ball spring and positioning ball in steel ball hole, and positioning ball is offseted by the hole, location of positioning ball spring with pedestal.
The control box protecgulum 401 of Electronic Control Box fastens with controlling lid plate 406, and is fixed by lid tapping screw 407, is provided with probe 402, isolation pad 403, electromagnetic valve 404, controls box Magnet 405, control box wiring board 408 in Electronic Control Box；Three probes in Electronic Control Box are respectively arranged at the base aperture periphery of Electronic Control Box, and are distributed in isoceles triangle form point, and fasten with needle tray hole in the control box protecgulum of Electronic Control Box respectively；Being provided with isolation pad between probe and control lid plate, probe is telescopic elastic probe.Meanwhile, the base aperture side of Electronic Control Box is provided with electromagnetic valve, is provided with control box Magnet in electromagnetic valve, and when this steel bolt turning tongue electronic lock is in locking state, the control box Magnet in electromagnetic valve is relative with the lock body Magnet in lock body assembly；The handle of lock body assembly is provided with open slot 3011 with the cylinder side circle mouth side of lock core suit place, and under handle use state, the lock body Magnet in lock core is relative with the open slot of handle, and lock body magnet segment inserts the open slot of handle；One end of pull-tab device is provided with locked groove, and this end outwards tilts.Controller line plate in hand held controller is provided with memory module, signaling module and induction coil, and signaling module uses bluetooth module；Control box wiring board in Electronic Control Box is provided with MCU module, on-off circuit module and ID lock module.
As shown in Fig. 5～Figure 10, during use, one end of pull-tab device penetrates the pedestal of lock body assembly, pedestal is installed on the installing hole of door-plate 8, Electronic Control Box is inserted in the pedestal of lock body assembly again, installing nut 5 screw in pedestal and Electronic Control Box, lock body assembly and pull-tab device are clamped and fastened on door-plate simultaneously, steel bolt is finally fixedly installed in by screw one end of lock core, this turns tongue electronic lock and can use.Now, pull-tab device one end of pedestal external diameter is limited in the shirt rim, outer, aperture of pedestal, stretches out probe one end of Electronic Control Box installing hole through door-plate, and the shirt rim, outer, aperture of the probe aperture of pull-tab device and pedestal offsets.When needing unlatching to use this to turn tongue electronic lock, the latch hook of notch inner slide one end, hand held controller side fastens with the locked groove of pull-tab device, controller line edges of boards in this side channel mouth of hand held controller offset along clamp with pull-tab device simultaneously, and rotatable handle to use state also sends the sound of " touching "；Now, the control box Magnet in electromagnetic valve is relative with the lock body Magnet in lock body assembly, and hand held controller can be powered to Electronic Control Box by pull-tab device, and carries out signal transmission.I.e. hand held controller is by powering to Electronic Control Box after signal determining, electromagnetic valve action in Electronic Control Box, the box Magnet that controls in Electronic Control Box is linked by the lock core Magnet in the action of a magnetic field band movable lock core, control box Magnet mutually to adsorb with lock core Magnet, lock core Magnet inserts the open slot of handle, lock core connects as one with handle, and now rotary handle just can drive steel bolt to rotate and realize open and close function.In the case of hand held controller is powered to Electronic Control Box not over pull-tab device, lock core Magnet would not insert the open slot of handle, the handle of rotational lock assembly can only be idle running, handle cannot band movable lock core action, it is thus possible to effectively prevent this from turning tongue electronic lock by malicious sabotage.
Simultaneously, this turns rated voltage 3.6V of tongue electronic lock, rated current 30mA, and owing to the signaling module in hand held controller uses bluetooth module, hand held controller judges whether to power to Electronic Control Box, can transmit instructions to Electronic Control Box and realize after connecting pull-tab device by hand held controller；And the bluetooth module of controller line plate is easy to determine that Electronic Control Box is powered and signal transmits by the mandate between smart mobile phone and hand held controller, i.e. realized by Blue-tooth communication method mandate.It addition, lock core is with auto-reset function, this turns after tongue electronic lock is opened when closing next time, it is necessary to is plugged by hand held controller again, thus effectively while the face of locking, solves the problem that detection lock is opened and door opens two unlike signals.
Claims (9)
1. point contact type turns a tongue electronic lock, this turn tongue electronic lock include hand held controller (1), pull-tab device (2),
Lock body assembly (3), Electronic Control Box (4), steel bolt (6), described steel bolt is fixed on lock by screw (7)
Lock core (304) one end of body assembly, is provided with lock core (304) in the pedestal (307) of lock body assembly, lock core with
One end of handle (301) connects, and the other end of handle stretches out pedestal；It is characterized in that described Electronic Control Box
(4) pedestal (307) external diameter of lock body assembly (3) it is arranged at by installing nut (5), simultaneously outside pedestal
Pull-tab device (2) one end in footpath is limited in the shirt rim, outer, aperture of pedestal, lock core (304) inner chip hole of lock body assembly
Being provided with lock body Magnet (305), the external diameter of lock core is provided with lock core back-moving spring (306), and lock core back-moving spring is respectively
Offset with flange collar and the handle (301) of lock core external diameter；The base aperture periphery of Electronic Control Box is provided with probe (402),
The probe one end stretching out Electronic Control Box offsets through the probe aperture of pull-tab device and the shirt rim, outer, aperture of pedestal, electronics
It is provided with electromagnetic valve (404) in controlling box, controls box Magnet (405) and control box wiring board (408), steel bolt
(6) under locking state, the control box Magnet in electromagnetic valve is relative with the lock body Magnet in lock body assembly, lock body magnetic
Tie Tong crosses control box Magnet effect and moves and make lock core be connected as a single entity with handle, controls box wiring board and is provided with MCU mould
Block, on-off circuit module and ID lock module；The other end of pull-tab device is provided with locked groove, and this end outwards tilts, and draws
The locked groove climbed fastens with the latch hook of notch inner slide (109) one end, hand held controller (1) side, controller line
The clamp (110) at road plate (102) edge offsets with pull-tab device, and the latch hook end of slide block one end is provided with slide block reset bullet
Spring (108), controller line plate, battery (103) and clamp be arranged in hand held controller, hand-held control
Device is provided with button (106), and controller line plate is provided with memory module, signaling module and induction coil；
The Quan Kou side, handle (301) upper lock core side of described lock body assembly (3) is provided with open slot (3011),
Handle and lock core (304) fit, under handle use state, the lock body Magnet (305) in lock core and handle opens
The most relatively, lock body magnet segment inserts hands in control box Magnet (405) in mouth groove, Electronic Control Box (4)
The open slot of handle.
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described Electronic Control Box
(4) be provided with three in isoceles triangle form point the probes (402) of distribution, probe respectively with the control of Electronic Control Box
Box protecgulum (401) processed interior needle tray hole fastens, and is provided with isolation pad (403) between probe and control lid plate (406).
Point contact type the most according to claim 1 and 2 turns tongue electronic lock, it is characterised in that described electronics control
The syringe needle that probe (402) is telescopic elastic probe, i.e. probe in box processed (4) inserts in needle stand, and
Offseting with the probe springs in needle stand, the external diameter of needle stand is provided with probe flange collar.
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described lock body assembly (3)
Handle (301) one end inside stretching out pedestal (307) is turn-button end, and the turn-button end of handle tilts to lopsidedness,
The turn-button end ovalize of handle, is provided with sealing ring (302) and steel between external diameter and the internal diameter of pedestal of handle
Silk collar (303).
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described lock body assembly (3)
Handle (301) side be provided with steel ball hole, be provided with positioning ball spring (308) and positioning ball in steel ball hole
(309), positioning ball is offseted by the hole, location of positioning ball spring with pedestal (307).
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described hand held controller
(1) button (106) offsets with the other end of slide block (109), and the rotating shaft two ends in the middle of slide block are arranged at
Symmetrically arranged backbone block (111) in hand held controller.
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described hand held controller
(1) signaling module of upper controller line plate (102) is bluetooth module.
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described hand held controller
(1) it is connected as a single entity with pull-tab device (2).
Point contact type the most according to claim 1 turns tongue electronic lock, it is characterised in that described pull-tab device (2) with
Lock body assembly (3) is connected as a single entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851069.5A CN104612480B (en) | 2014-12-31 | 2014-12-31 | Point touch type electronic cam lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851069.5A CN104612480B (en) | 2014-12-31 | 2014-12-31 | Point touch type electronic cam lock |
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| Publication Number | Publication Date |
|---|---|
| CN104612480A CN104612480A (en) | 2015-05-13 |
| CN104612480B true CN104612480B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410851069.5A Active CN104612480B (en) | 2014-12-31 | 2014-12-31 | Point touch type electronic cam lock |
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| CN (1) | CN104612480B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386832B (en) * | 2017-08-01 | 2022-10-04 | 宁波生久科技有限公司 | Handle limiting anti-theft plane lock |
| CN108868384A (en) * | 2018-09-06 | 2018-11-23 | 江苏易索电子科技有限公司 | A kind of machinery cabinet lock of touch-control activation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928678A1 (en) * | 2008-03-14 | 2009-09-18 | Parkeon Soc Par Actions Simpli | Lock for use in pay and display machine to block shutter with respect to cavity, has rotor connected to outlet shaft, so that opening control movement of lock drives opening movement of lock in coupled configuration |
| CN201610663U (en) * | 2010-01-08 | 2010-10-20 | 周大震 | Electromagnetic lock core |
| CN201924688U (en) * | 2010-12-28 | 2011-08-10 | 宁波生久柜锁有限公司 | Integral electric lock |
| CN102162314B (en) * | 2011-04-20 | 2012-11-21 | 林飞和 | Clutch device for electronic lock |
| CN102518342B (en) * | 2011-11-30 | 2014-06-18 | 广东第吉尔电子科技有限公司 | Transmission gear for smart lock |
| CN203729707U (en) * | 2014-02-20 | 2014-07-23 | 深圳市锐耐智能锁业有限公司 | Intelligent lock |
| CN204418834U (en) * | 2014-12-31 | 2015-06-24 | 宁波生久柜锁有限公司 | Turn tongue electronic lock |
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Address after: 315423 No.1, Shengjiu Ring Road, industrial park, Dayin Town, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Shengjiu Technology Co.,Ltd. Address before: 315423 Ningbo County, Zhejiang province Yuyao City Patentee before: Ningbo Shengjiu Cabinet Lock Co.,Ltd. |