CN102561832B - Mechanical and electronic composite lock - Google Patents
Mechanical and electronic composite lock Download PDFInfo
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- CN102561832B CN102561832B CN201210069672.9A CN201210069672A CN102561832B CN 102561832 B CN102561832 B CN 102561832B CN 201210069672 A CN201210069672 A CN 201210069672A CN 102561832 B CN102561832 B CN 102561832B
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Abstract
A mechanical and electronic composite lock comprises a lock case and an electromagnetic valve lock with an electromagnet core. The electromagnet core is sleeved with a spring and fixed with a retainer ring. The mechanical and electronic composite lock is characterized in that the inside of the lock case is rotatably connected with a lock bolt plate via a rotating shaft, and the rotating shaft is sleeved with a first torsional spring; an electromagnet which is arranged transversely is further disposed in the lock case via a base, the middle of a crow plate is connected to the upper side of the base, the crow plate can deflect left and right, and the upper end of the crow plate is connected with the right of the base via a tension spring; and when the lock bolt plate extends out of the lock case, the upper end of the lock bolt plate matches with a gear position of the electromagnet core extending outwards so as to stop the lock bolt plate from rotating to retract into the lock case, and the lower end of the crow plate matches with the retainer ring in a retaining manner so as to stop the electromagnet core from moving upwards. The electromagnet and the crow plate are further disposed in the lock case, when the electromagnet is in power failure, the crow plate can stop the retainer ring from moving upwards and has an auxiliary locking effect, locking ability of the composite lock is greatly strengthened, and safety of the composite lock is enhanced.
Description
Technical field
The present invention relates to a kind of lock structure for strongbox, especially refer to a kind of mechanical and electronic compound lock.
Background technology
Mechanical and electronic compound lock on traditional electronic type strongbox comprises the slide plate of being located at the door-plate back side, the front end of slide plate is connected with bolt head, slide plate has drives structure to drive and energy front and back horizontal sliding, the door-plate back side is provided with the electromagnetic valve lock with electromagnetic core, electromagnetic core scalable go out electromagnetic valve lock and with slide plate carry out gear coordinate with stop slide plate move forward and backward, drives structure has generally comprised handle, be arranged on rotating disk or the plectrum at the door-plate back side, rotating disk or plectrum are connected with slide plate, and turning handle just can drive slide plate to move forward and backward under the drive of rotating disk or plectrum.
A kind of combined mechanoelectric lock as disclosed in the patent No. Chinese utility model patent < < combined mechanoelectric lock > > that is ZL02215701.8 (notification number is CN2525181Y).
Existing machinery electron recombination is latched in following drawback: 1, electromagnetic core is all directly to contact with slide plate, once turning handle, overexert, slide plate just can directly clash into electromagnetic core, damages electromagnetic core or directly slips over electromagnetic core, door is opened, caused potential safety hazard; 2, easily by vibrations, opened, existing electromagnetic valve lock, because of its electromagnetic core, by spring, (general elastic force is less, not large suction) stretch out and remain on operating position, as passed through vibrations casing, lift casing on one side, a hand is placed in handle position, another hand control casing falls, and at the rotation in a flash handle landing, at this moment mandrel lands moment because the relation of gravity inertial has a power down at casing, and a bit of shape journey down, thereby disengaging operating position, causes potential safety hazard; 3, existing machinery electron recombination lock does not have emergency opening function, after electromagnetic valve lock damages, is difficult for opening.
In sum, existingly for the mechanical and electronic compound lock on strongbox, also can improve further.
Summary of the invention
Technical problem to be solved by this invention is the mechanical and electronic compound lock that provides a kind of electromagnetic core directly not contact with slide plate for above-mentioned prior art present situation, and it has safe, the reliable advantage of intensity.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of mechanical and electronic compound lock, comprise lock housing, in lock housing, be provided with the electromagnetic valve lock with telescopic electromagnetic core, on electromagnetic core, be arranged with spring and be fixed with back-up ring, this spring action is in back-up ring and make electromagnetic core keep moving down trend; It is characterized in that: in described lock housing, by rotating shaft, be rotatably connected to bolt plate, in rotating shaft, be arranged with and make bolt plate keep outer the first torsion spring that stretches out the opening trend on lock housing sidewall; In described lock housing, be also provided with the electromagnet of horizontally set, this electromagnet is arranged in lock housing by pedestal, have its middle part of a skid plate to be connected to upside the energy deflection of pedestal, the upper end of skid plate is connected with the right part of pedestal by extension spring, and this extension spring makes the lower end of skid plate keep perk trend left; In bolt plate, stretch out outward under the state of lock housing, the upper end of described bolt plate coordinates with overhanging electromagnetic core gear and stops bolt plate revolution indentation lock housing, and the lower end of described skid plate and described back-up ring gear are joined and move on block electromagnetic iron core.
The lower end of above-mentioned skid plate has the stop part being bent to form left, and the back-up ring gear on this stop part and overhanging electromagnetic core is joined.Because stop part length is longer, therefore skid plate is adjusted in can be in a big way, install more convenient.
The both sides, upper end of above-mentioned skid plate have breach, and pedestal left end top has two upwardly extending inserting columns, and described inserting column is plugged in described breach, and skid plate upper end is caught in described extension spring one end, and the extension spring other end catches on the right-hand member top of pedestal.Inserting column and breach are loose fit, therefore skid plate can be realized relative pedestal deflection, easy for installation, and skid plate also can adopt alternate manner and pedestal formation to be rotationally connected certainly.
In the middle part of above-mentioned bolt plate, outer face has respectively outward extending described rotating shaft, the outer face of bolt plate also has outward extending bumping post, described the first torsion spring set is located in rotating shaft, one end of the first torsion spring is resisted against on the lower inwall of lock housing, and the other end of the first torsion spring is resisted against on described bumping post and makes bolt plate keep the outer opening trend on lock housing sidewall of stretching out.
Above-mentioned bolt plate has vertical wall and arcwall, stretches out outward under the state of the opening on lock housing sidewall in bolt plate, and described vertical wall exposes outside lock housing.Vertically wall energy better contacts with the slide plate in strongbox, and the slippage of slide plate can more easily drive bolt plate deflection, and opposite side is set to annular wall, guarantees that bolt plate energy when rotating is overhanging or inside contracts by less opening, reduces lock housing size.
In above-mentioned lock housing, there is baffle plate, on baffle plate, have the breach passing for electromagnetic core, under electromagnetic core keeps overhanging state, described back-up ring contacts baffle plate with the upper surface of baffle plate and not only electromagnetic core is played to guiding function, also back-up ring is played to position-limiting action in addition.
Further improve, be also provided with the emergent plectrum that can rotate in above-mentioned lock housing, this emergent plectrum coordinates with the right side of described back-up ring lower surface and skid plate, the rotational promotion skid plate of described emergent plectrum move to left with back-up ring on move.Emergent plectrum is set can be in the situation that electromagnetic valve lock or electromagnet damage, this composite lock of emergency opening, and emergent plectrum can key actuated, certainly also can be by other tool drives.
The middle part of above-mentioned emergent plectrum is set on the column of lock housing bottom surface, the left side of emergent plectrum has first pushing part that can coordinate with described back-up ring lower surface, on described column, be arranged with the second torsion spring, one end of the second torsion spring is plugged on the first pushing part, and the other end of the second torsion spring contacts with the right side of skid plate.When emergent plectrum rotates, the second torsion spring first promotes skid plate deflection to the right, is rotated further, and the first pushing part just promotes to move on back-up ring, finally opens this composite lock.Two pushing parts that coordinate with back-up ring and skid plate respectively also can be set certainly.
The right side of above-mentioned emergent plectrum has second pushing part of extending to the right, the right side wall of described lock housing is uploaded and is provided with the emergent push rod that can move left and right, this emergent push rod right-hand member exposes outside lock housing right side wall, the left end of emergent push rod promotes to coordinate with described the second pushing part, and the moving to left of push rod of meeting an urgent need can promote the second pushing part and drive emergent plectrum to clockwise rotate.By lock housing is again outside, promote emergent push rod, just can drive emergent plectrum rotation, emergency opening is easy to operate.
On above-mentioned emergent push rod, be arranged with and make emergent push rod keep the secondary spring of overhanging trend.Secondary spring is set and can when pressing emergent push rod, more has feel.
Compared with prior art, the invention has the advantages that: this composite lock is associated as slide plate by bolt plate and external structure, and the intensity of bolt plate is greater than electromagnetic core, therefore can promote the intensity of this mechanical and electronic compound lock entirety, even if external component can directly not clash into electromagnetic core core and damage electromagnetic core or directly slip over electromagnetic core as slide plate, further improved the safety of this mechanical and electronic compound lock, reasonable integral structure practicality; The moment that the first torsion spring has certain anti-scotch to reverse, the torsion of torsion spring can effectively reduce the impulse force that shipper pole comes after slide plate, thereby reduces the stressed of electromagnetic core, plays the effect of protection electromagnetic core; The most important thing is, be also provided with electromagnet and skid plate parts in lock housing, when under electromagnet off-position, skid plate can stop on back-up ring and moves, and plays the effect of secondary locking, greatly strengthens the locking ability of this composite lock, strengthens the safety of this composite lock.
Accompanying drawing explanation
Fig. 1 is the perspective view (the overhanging state of bolt plate) of the embodiment of the present invention;
Fig. 2 is the Facad structure schematic diagram (the overhanging state of bolt plate) of the embodiment of the present invention;
Fig. 3 is the Facad structure schematic diagram (bolt plate inside contracts state) of the embodiment of the present invention;
Fig. 4 is the stereochemical structure exploded view of the embodiment of the present invention;
Fig. 5 is the installation schematic perspective view between skid plate and electromagnet in the embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Fig. 1～5, it is a preferred embodiment of the present invention.
A kind of mechanical and electronic compound lock, comprise lock housing 1, lock housing 1 have upper casing be connected by screw with lower casing together with form, in lock housing 1, be provided with the electromagnetic valve lock 2 with telescopic electromagnetic core 21, on electromagnetic core 21, be arranged with spring 22 and be fixed with back-up ring 23, this spring 22 acts on back-up ring 23 and makes electromagnetic core 21 keep moving down trend; In lock housing 1, have baffle plate 12, have the breach 121 passing for electromagnetic core 21 on baffle plate 12, under electromagnetic core 21 keeps overhanging state, back-up ring 23 contacts with the upper surface of baffle plate 12.
In lock housing 1, by rotating shaft 31, be rotatably connected to bolt plate 3, bolt plate 3 is semicircle shape substantially, bolt plate 3 has vertical wall 34 and arcwall 35, in rotating shaft 31, be arranged with and make bolt plate 3 keep outer the first torsion spring 32 that stretches out opening 11 trend on lock housing 1 sidewall, outside bolt plate 3, stretch out under the state of the opening 11 on lock housing sidewall, vertically wall 34 exposes outside lock housing 1.In the middle part of bolt plate 3, outer face has respectively outward extending rotating shaft 31, this rotating shaft 31 is rotated in the axis hole that is plugged in upper casing and lower casing and can be rotated, the outer face of bolt plate 3 also has outward extending bumping post 33, the first torsion spring 32 is set in rotating shaft 31, one end of the first torsion spring 32 is resisted against on the lower inwall of lock housing 1, and the other end of the first torsion spring 32 is resisted against on bumping post 33 and makes bolt plate 3 keep outer opening 11 trend in lock housing lower wall of stretching out.
As shown in Figure 5, in lock housing 1, be also provided with the electromagnet 4 of horizontally set, this electromagnet 4 is arranged in lock housing 1 by pedestal 5, there are skid plate 6 its middle parts to be connected to upside the energy deflection of pedestal 5, the both sides, upper end of skid plate 6 have breach 62, pedestal 5 left end tops have two upwardly extending inserting columns 52, inserting column 52 activities are plugged in breach 62, the upper end of skid plate 6 is connected with the right part of pedestal 5 by extension spring 51, skid plate 6 upper ends are caught in the one end that is extension spring 51, the other end of extension spring 51 catches on the right-hand member top of pedestal 5, this extension spring 51 makes the lower end of skid plate 6 keep perk trend left.
The lower end of skid plate 6 has the stop part 61 being bent to form left, stretches out under the state of lock housing 1 outside bolt plate 3, and this stop part 61 is joined and moves on block electromagnetic iron core 21 with back-up ring 23 gears on overhanging electromagnetic core 21; The upper end of bolt plate 3 coordinates with overhanging electromagnetic core 21 gears and stops that bolt plate 3 turns round indentation lock housing 1.
In lock housing 1, be also provided with the emergent plectrum 7 that can rotate, this emergent plectrum 7 coordinates with the right side of back-up ring 23 lower surfaces and skid plate 6, the rotational of emergent plectrum 7 promote that skid plate 6 moves to left and back-up ring 23 on move.
The middle part of emergent plectrum 7 is set on the column 13 of lock housing 1 bottom surface, the left side of emergent plectrum 7 has first pushing part 71 that can coordinate with back-up ring 23 lower surfaces, on column 13, be arranged with the second torsion spring 72, one end of the second torsion spring 72 is plugged on the first pushing part 71, and the other end of the second torsion spring 72 contacts with the right side of skid plate 6.
The right side of emergent plectrum 7 has second pushing part 73 of extending to the right, the right side wall of lock housing 1 is uploaded and is provided with the emergent push rod 8 that can move left and right, these emergent push rod 8 right-hand members expose outside lock housing 1 right side wall, on emergent push rod 8, be arranged with and make emergent push rod 8 keep the secondary spring 9 of overhanging trend, the left end of emergent push rod 8 promotes to coordinate with the second pushing part 73, and the moving to left of push rod 8 of meeting an urgent need can promote the second pushing part 73 and drive emergent plectrum 7 to clockwise rotate.
Operating principle and the process of this mechanical and electronic compound lock are as follows:
As shown in Figure 1, 2, under lock-out state, bolt plate 3 is at the lower outside opening 11 stretching out in lock housing lower wall of the first torsion spring effect, stop the slippage of locking mechanism of strongbox middle slide plate, electromagnetic valve lock and electromagnet dead electricity, overhanging joining with bolt plate gear of electromagnetic core and stop that bolt plate 3 turns round indentation lock housing 1, stop part 61 on while skid plate 6 is joined and moves on block electromagnetic iron core 21 with back-up ring 23 gears on overhanging electromagnetic core 21, this composite lock is carried out double locking to bolt plate by electromagnetic valve lock and electromagnet structure simultaneously, and safety is better.
As shown in Figure 3, normal unlatching, electromagnet obtains electric adhesive skid plate, and the lower end of skid plate 6 moves to right, the stop part 61 of skid plate 6 lower ends leaves back-up ring 23, no longer on block electromagnetic iron core, move, electromagnetic valve lock obtains electric, on adhesive electromagnetic core, moves, electromagnetic core 21 lower ends no longer stop that bolt plate 3 turns round indentation lock housing 1, if at this moment moved after locking mechanism of strongbox middle slide plate, just promote, in bolt plate revolution indentation lock housing 1, to realize release.
As shown in Figure 3, emergency opening, promote emergent push rod 8, the elastic force that emergent push rod 8 overcomes secondary spring 9 moves to left and promotes the second pushing part 73 of emergent plectrum 7, emergent plectrum 7 turns clockwise, the lower end that the first pushing part 71 of emergent plectrum 7 drives one end of the second torsion spring 72 to promote skid plate 6 moves to right, the stop part 61 of skid plate 6 lower ends leaves back-up ring 23, no longer on block electromagnetic iron core, move, the first pushing part 71 of emergent plectrum 7 upwards promotes to move on elastic force that electromagnetic core overcomes spring 22 simultaneously, electromagnetic core 21 lower ends no longer stop that bolt plate 3 turns round indentation lock housing 1, if at this moment moved after locking mechanism of strongbox middle slide plate, just promote in bolt plate revolution indentation lock housing 1, realize emergent release.
Claims (8)
1. a mechanical and electronic compound lock, comprise lock housing (1), in lock housing (1), be provided with the electromagnetic valve lock (2) with telescopic electromagnetic core (21), on electromagnetic core (21), be arranged with spring (22) and be fixed with back-up ring (23), this spring (22) acts on back-up ring (23) and makes electromagnetic core (21) keep moving down trend; It is characterized in that: in described lock housing (1), by rotating shaft (31), be rotatably connected to bolt plate (3), in rotating shaft (31), be arranged with and make bolt plate (3) keep outer the first torsion spring (32) that stretches out opening (11) trend on lock housing (1) sidewall; In described lock housing (1), be also provided with the electromagnet (4) of horizontally set, this electromagnet (4) is arranged in lock housing (1) by pedestal (5), there is its middle part of a skid plate (6) to be connected to upside the energy deflection of pedestal (5), the upper end of skid plate (6) is connected with the right part of pedestal (5) by extension spring (51), and this extension spring (51) makes the lower end of skid plate (6) keep perk trend left; Outside bolt plate (3), stretch out under the state of lock housing (1), the upper end of described bolt plate (3) coordinates with overhanging electromagnetic core (21) gear and stops that bolt plate (3) revolution indentation lock housing, the lower end of described skid plate (6) are kept off with described back-up ring (23) and joins and moves on block electromagnetic iron core (21); In described lock housing (1), be also provided with the emergent plectrum (7) that can rotate, this emergent plectrum (7) coordinates with the right side of described back-up ring (23) lower surface and skid plate (6), the rotational of described emergent plectrum (7) promote that skid plate (6) moves to left and back-up ring (23) on move; The middle part of described emergent plectrum (7) is set on the column (13) of lock housing (1) bottom surface, the left side of emergent plectrum (7) has first pushing part (71) that can coordinate with described back-up ring (23) lower surface, on described column (13), be arranged with the second torsion spring (72), it is upper that one end of the second torsion spring (72) is plugged in the first pushing part (71), and the other end of the second torsion spring (72) contacts with the right side of skid plate (6).
2. mechanical and electronic compound lock according to claim 1, it is characterized in that: the lower end of described skid plate (6) has the stop part (61) being bent to form left, this stop part (61) is joined with back-up ring (23) gear on overhanging electromagnetic core (21).
3. mechanical and electronic compound lock according to claim 2, it is characterized in that: the both sides, upper end of described skid plate (6) have breach (62), pedestal (5) left end top has two upwardly extending inserting columns (52), described inserting column (52) is plugged in described breach (62), skid plate (6) upper end is caught in described extension spring (51) one end, the right-hand member top that extension spring (51) other end catches on pedestal (5).
4. mechanical and electronic compound lock according to claim 1, it is characterized in that: in the middle part of described bolt plate (3), outer face has respectively outward extending described rotating shaft (31), the outer face of bolt plate (3) also has outward extending bumping post (33), described the first torsion spring (32) is set in rotating shaft (31), one end of the first torsion spring (32) is resisted against on the lower inwall of lock housing (1), the other end of the first torsion spring (32) is resisted against described bumping post (33) above makes bolt plate (3) keep outer opening (11) trend on lock housing sidewall of stretching out.
5. mechanical and electronic compound lock according to claim 4, it is characterized in that: described bolt plate (3) has vertical wall (34) and arcwall (35), outside bolt plate (3), stretch out under the state of the opening (11) on lock housing sidewall, described vertical wall (34) exposes outside lock housing (1).
6. mechanical and electronic compound lock according to claim 1, it is characterized in that: in described lock housing (1), there is baffle plate (12), on baffle plate (12), have the breach (121) passing for electromagnetic core (21), under electromagnetic core (21) keeps overhanging state, described back-up ring (23) contacts with the upper surface of baffle plate (12).
7. mechanical and electronic compound lock according to claim 1, it is characterized in that: the right side of described emergent plectrum (7) has second pushing part (73) of extending to the right, the right side wall of described lock housing (1) is uploaded and is provided with the emergent push rod (8) that can move left and right, this emergent push rod (8) right-hand member exposes outside lock housing (1) right side wall, the left end of emergent push rod (8) promotes to coordinate with described the second pushing part (73), the moving to left of push rod (8) of meeting an urgent need can promote the second pushing part (73) and drive emergent plectrum (7) to clockwise rotate.
8. mechanical and electronic compound lock according to claim 7, is characterized in that: on described emergent push rod (8), be arranged with and make emergent push rod (8) keep the secondary spring (9) of overhanging trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069672.9A CN102561832B (en) | 2012-03-16 | 2012-03-16 | Mechanical and electronic composite lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069672.9A CN102561832B (en) | 2012-03-16 | 2012-03-16 | Mechanical and electronic composite lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102561832A CN102561832A (en) | 2012-07-11 |
| CN102561832B true CN102561832B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210069672.9A Expired - Fee Related CN102561832B (en) | 2012-03-16 | 2012-03-16 | Mechanical and electronic composite lock |
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| Country | Link |
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| CN (1) | CN102561832B (en) |
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| CN103075051B (en) * | 2013-01-09 | 2015-04-15 | 宁波虎王保险箱有限公司 | Shake-proof starting electronic lock and shake-proof method thereof |
| CN107339023A (en) * | 2017-04-14 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of virgin lock and the baking box locked using the child |
| CN109339587B (en) * | 2018-10-18 | 2024-01-30 | 宁波盛威卓越安全设备有限公司 | Mechanical and electronic clutch transfer lock |
| CN109881993B (en) * | 2019-01-21 | 2024-01-05 | 厦门中锐电力科技有限公司 | Power equipment lock |
| CN116475039B (en) * | 2023-05-23 | 2023-10-10 | 惠州市思茗答科技有限公司 | Optical fixing machine applied to mobile hard disk production |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH559846A5 (en) * | 1973-10-23 | 1975-03-14 | Brauchli E & R Amstein Fa | Electromagnetic security lock for doors - locking and bolting levers use signal micro-switch to indicate condition |
| EP0193017A1 (en) * | 1985-03-01 | 1986-09-03 | Fritz Fuss GmbH & Co. | Device for actuating a release bolt |
| DE3926132A1 (en) * | 1989-08-08 | 1991-02-14 | Sitec Gmbh Sicherheitseinricht | Safe storage compartment with doors outside and inside secure room - has electrical interlock preventing simultaneous opening of doors and automatic locking without key operation |
| CN1363753A (en) * | 2002-02-07 | 2002-08-14 | 宁波永发集团有限公司 | Combined mechanoelectric lock |
| CN2861402Y (en) * | 2005-11-08 | 2007-01-24 | 宁波永发集团有限公司 | Mechanical electronic lock with emergency lock |
| CN201730413U (en) * | 2009-10-15 | 2011-02-02 | 宁波泰佳安全设备有限公司 | Electromagnetic valve lock and assembled lock with same |
| CN202530878U (en) * | 2012-03-16 | 2012-11-14 | 宁波永发集团有限公司 | Mechanical electronic composite lock |
-
2012
- 2012-03-16 CN CN201210069672.9A patent/CN102561832B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH559846A5 (en) * | 1973-10-23 | 1975-03-14 | Brauchli E & R Amstein Fa | Electromagnetic security lock for doors - locking and bolting levers use signal micro-switch to indicate condition |
| EP0193017A1 (en) * | 1985-03-01 | 1986-09-03 | Fritz Fuss GmbH & Co. | Device for actuating a release bolt |
| DE3926132A1 (en) * | 1989-08-08 | 1991-02-14 | Sitec Gmbh Sicherheitseinricht | Safe storage compartment with doors outside and inside secure room - has electrical interlock preventing simultaneous opening of doors and automatic locking without key operation |
| CN1363753A (en) * | 2002-02-07 | 2002-08-14 | 宁波永发集团有限公司 | Combined mechanoelectric lock |
| CN2861402Y (en) * | 2005-11-08 | 2007-01-24 | 宁波永发集团有限公司 | Mechanical electronic lock with emergency lock |
| CN201730413U (en) * | 2009-10-15 | 2011-02-02 | 宁波泰佳安全设备有限公司 | Electromagnetic valve lock and assembled lock with same |
| CN202530878U (en) * | 2012-03-16 | 2012-11-14 | 宁波永发集团有限公司 | Mechanical electronic composite lock |
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| CN102561832A (en) | 2012-07-11 |
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Effective date of registration: 20170217 Address after: Beilun Zhejiang Dagan dam head 315800 west city of Ningbo Province, No. 321 Patentee after: Ningbo Yongfa Intelligent Security Technology Co. Ltd. Address before: 315813 Zhejiang Province, Ningbo city Beilun District white peak door industrial zone Patentee before: Yongfa Group Co., Ltd., Ningbo |
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Granted publication date: 20140430 Termination date: 20200316 |