CN202926040U - Interconnected primary and secondary lock - Google Patents

Interconnected primary and secondary lock Download PDF

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Publication number
CN202926040U
CN202926040U CN 201220502208 CN201220502208U CN202926040U CN 202926040 U CN202926040 U CN 202926040U CN 201220502208 CN201220502208 CN 201220502208 CN 201220502208 U CN201220502208 U CN 201220502208U CN 202926040 U CN202926040 U CN 202926040U
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lock
locking
lock body
plate
gear
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Expired - Lifetime
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CN 201220502208
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Chinese (zh)
Inventor
刘丽亭
刘广兵
李海龙
李佩
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Individual
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Abstract

The utility model relates to an interconnected primary and secondary lock which is used for a bi-parting security door, and belongs to the technical field of security devices. An existing security door lock is mainly used for a single-parting security door, and does not have an interlock function, a mode of using a key to unlock is adopted, security is poor, and a lockset can not be automatically unlocked in a power failure state. The interconnected primary and secondary lock is applicable to the bilateral bi-parting security door, is composed of a primary lock and a secondary lock, wherein the primary lock and the secondary lock are respectively installed on door bodies on two sides of the security door, an energy storing device is arranged in a lock body, a mutual interlocking mechanism is controlled through an upper gear rack and a lower gear rack, interlocking of the primary lock and the secondary lock is achieved, and safety performance of the security door is greatly improved. The interconnected primary and secondary lock is provided with two independent unlocking devices, the unlocking devices are detected through a sensor, and have functions of automatic locking and automatic unlocking, operation is simple and convenient, and the interconnected primary and secondary lock ensures that the security door can be unlocked on any conditions.

Description

Interconnected primary and secondary lock
Technical field
The utility model relates to a kind of interconnected primary and secondary lock for the double-leaf anti-theft door, belongs to the security device technical field.
Background technology
Existing antitheft door lockset is various in style, although many anti-theft product have realized the Multi-point automatic locking function, does not possess interlock function, and lockset only possesses automatic fastening function mostly, can't automatically open during power failure; Its locking and opening ways are single, all adopt traditional key unlocking mode, give offender's opportunity.The novel intelligent lockset of minority owing to only being provided with a cover automatic open device, in case opening device is impaired, often causes security door to open.This class lockset belongs to simple basic burglary-resisting installation, and when accident occured, as fire, earthquake etc., this type of lockset can not be realized automatic unlatching, can't evacuate rapidly indoor occupant, ensures personal safety, and also brings inconvenience to rescue work.
Summary of the invention
The purpose of this utility model is to provide a kind of interconnected primary and secondary lock, has overcome the defective of prior art, and is easy to operate, have automatic blocking, automatically open and the bilateral interlock function.
The technical solution of the utility model is: comprise opening device, opening device is comprised of sheet, electromagnet under safety plate, lever arm, cam, unlatching motor, stopper arms upper slice, stopper arms;
Safety plate, lever arm be coaxial to be assemblied on the bearing pin of opening motor top lock body inwall, and back-moving spring is housed; Under stopper arms upper slice and stopper arms, sheet is coaxial is assemblied on the bearing pin of opening motor sidepiece lock body inwall, and back-moving spring is housed; Lever arm is provided with locating groove; The safety plate end is provided with notch; Stopper arms upper slice end coordinates with lever arm, and is stuck in the notch of safety plate end; Under stopper arms, the middle part of sheet one side is fixed with M type plectrum, and is provided with the plectrum that coordinates with stopper arms upper slice, and the lock body inwall of opposite side relevant position is equipped with electromagnet; Be fixed with cam on the power output shaft of unlatching motor; Cam coordinates with the M type plectrum end of sheet under safety plate, stopper arms respectively, coordinates in the middle part of M type plectrum middle part and safety plate;
It is characterized in that: formed by son lock and female lock;
The son lock comprises son lock lock body, handle, shifting block, square shaft, hyoplastron, locking lever; Square shaft is inserted on son lock lock body, and an end of square shaft is fixed with handle, and the other end is fixed with shifting block; Be equipped with slidably hyoplastron on the lock body of square shaft below, hyoplastron one side is fixed with the dead bolt that can insert female lock lock body; Location-plate is hinged on hyoplastron, and back-moving spring is installed; Be fixed with alignment pin on son lock lock body inwall, during the hyoplastron locking, alignment pin coordinates with the location-plate end;
The inwall of son lock lock body is equipped with one group of pitch wheel C and gear D; The section of rack engagement on gear C and hyoplastron top; The section of rack engagement of gear D and hyoplastron bottom, or respectively be inserted in son lock lock body and be positioned at two longitudinal racks of gear D both sides and the section of rack engagement of hyoplastron bottom;
On the lock of the son below hyoplastron lock body, the locking roller is equipped with in locking lever lower end by the bearing pin hinge mounted for locking lever middle part;
Female lock comprises female lock lock body, energy-stored spring axle, energy storage tooth plate, gear A, gear B, upper rack, lower tooth bar, locking tooth bar, locking gear, locking motor;
Female lock lock body upper inside wall and bottom respectively are provided with one group of fore-stock and after-poppet, all are fixed with an energy-stored spring axle on every group of forward and backward support; The energy storage tooth plate is provided with front vertical plate and back vertical plate, and the forward and backward riser of energy storage tooth plate is sleeved on the energy-stored spring axle, and corresponding with the latch bolt position of son lock lock body; Be set with energy-stored spring on the energy-stored spring axle, energy-stored spring is between the front vertical plate of the after-poppet of lock body and energy storage tooth plate; Female lock lock body inwall is equipped with pitch wheel A and gear B; Upper rack and lower tooth bar vertically are inserted into respectively in female lock lock body and are positioned at the both sides of gear B; The section of rack engagement on gear A and energy storage tooth plate top; Gear B respectively with the section of rack of energy storage tooth plate bottom and upper rack, the engagement of lower tooth bar; The energy storage tooth plate is provided with spacer;
Opening device is arranged on mother's lock body inwall of energy storage tooth plate sidepiece, and when the energy storage tooth plate was in locking states, the locating groove on the lever arm of opening device matched with the spacer of energy storage tooth plate;
On mother's lock body of energy storage tooth plate below, be equipped with slidably locking tooth bar and locking motor, the locking tooth bar is corresponding with the locking roller of son lock; Locking gear on locking motor power output shaft and the engagement of locking tooth bar.
Further, described dead bolt comprises roller tongue and middle tongue, but the end of roller tongue is provided with the roller of resilience; Push rod is equipped with in corresponding with location-plate dead bolt inside, and the push rod end coordinates with location-plate.
Further, described unlatching motor, electromagnet, locking motor are connected with sensor and control circuit.
The utility model has the advantages that: be applicable to the security door that bilateral is split, formed by son lock and female lock, be arranged on respectively on the door body of both sides, easy to use, sub-lock and female lock interlocking have been realized, the function of have automatic blocking, automatically opening, and be provided with two and overlap independently opening device, guaranteeing under any circumstance all can unlatching burglar-proof door.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated.
Description of drawings
Structural representation when Fig. 1 is the utility model embodiment 1 locking;
Structural representation when Fig. 2 is the utility model embodiment 1 unlatching;
Fig. 3 is the structural representation of the utility model embodiment 2.
The specific embodiment
in figure: 1, shifting block, 2, square shaft, 3, hyoplastron, 4, gear C, 5, alignment pin, 6, location-plate, 7, middle tongue, 8, the roller tongue, 9, gear D, 10, the locking lever, 11, the locking roller, 12, fore-stock, 13, the energy-stored spring axle, 14, the energy storage tooth plate, 15, front vertical plate, 16, energy-stored spring, 17, upper rack, 18, gear A, 19, gear B, 20, after-poppet, 21, safety plate, 22, lever arm, 23, cam, 24, open motor, 25, stopper arms upper slice, 26, sheet under stopper arms, 27, electromagnet, 28, lower tooth bar, 29, the locking tooth bar, 30, locking gear, 31, the locking motor.
Embodiment 1
From Fig. 1---Fig. 2 as can be known, the utility model is comprised of son lock and female lock; Son lock and female lock are arranged on respectively on the biparting two side door bodies of splitting security door.
The son lock comprises son lock lock body, handle, shifting block 1, square shaft 2, hyoplastron 3, locking lever 10, locking roller 11;
Be fitted with square shaft 2 on son lock lock body, an end of square shaft 2 (lock body is outside) is fixed with handle, and the other end (lock body is inner) is fixed with shifting block 1; Be equipped with the hyoplastron 3 that can laterally slide on the lock body of square shaft 2 belows, a side of hyoplastron 3 is fixed with the dead bolt that can insert female lock lock body; During manual locking lockset, the tail end of shifting block 1 coordinates with hyoplastron 3, promotes hyoplastron 3 transverse movements;
Location-plate 6 is hinged on hyoplastron 3, and back-moving spring is installed; Be fixed with alignment pin 5 on son lock lock body inwall, alignment pin 5 is positioned at the hunting range of location-plate 6 ends, and when the lockset locking, location-plate 6 coordinates the effect that makes hyoplastron 3 location of playing with alignment pin 5;
Described dead bolt comprises roller tongue 8 and middle tongue 7, the end of roller tongue 8 is provided with roller, spring is equipped with in roller tongue 8 inside, be equipped with push rod in the roller tongue 8 corresponding with location-plate 6 positions, the end of this push rod coordinates with location-plate 6, when push rod is pushed up pressure, promote location-plate 6 and swing, remove hyoplastron is limited.
Son lock lock body inwall one group of pitch wheel C 4 and gear D 9 be installed, the section of rack engagement on gear C 4 and hyoplastron 3 tops, the section of rack engagement of gear D 9 and hyoplastron 3 bottoms reduces frictional resistance when hyoplastron 3 is slided;
On the son of hyoplastron 3 downsides lock lock body, locking roller 11 is equipped with in locking lever 10 lower ends by the bearing pin hinge mounted at locking lever 10 middle parts; During the lockset automatic blocking, the upper end of locking lever 10 coordinates with hyoplastron 3, promotes hyoplastron 3 transverse movements.
Female lock comprises female lock lock body, energy-stored spring axle 13, energy storage tooth plate 14, gear A 18, gear B 19, upper rack 17, lower tooth bar 28, locking tooth bar 29, locking gear 30, locking motor 31;
Female lock lock body upper inside wall and bottom respectively are provided with one group of fore-stock 12 and after-poppet 20, all are fixed with an energy-stored spring axle 13 on every group of forward and backward support; Energy storage tooth plate 14 is provided with front vertical plate 15 and back vertical plate, and the forward and backward riser of energy storage tooth plate 14 is sleeved on energy-stored spring axle 13, and corresponding with the latch bolt position of son lock lock body, and energy storage tooth plate 14 can horizontally slip along energy-stored spring axle 13; Be set with energy-stored spring 16 on energy-stored spring axle 13, energy-stored spring 16 is between the front vertical plate 15 of the after-poppet 20 of lock body and energy storage tooth plate 14, and during the lockset locking, energy storage tooth plate 14 moves to left and makes energy-stored spring 16 compressions, and lockset provides power for each parts reset when opening; Female lock lock body inwall is equipped with pitch wheel A 18 and gear B 19; Upper rack 17 and lower tooth bar 28 vertically are inserted into respectively in female lock lock body, are positioned at gear B 19 both sides, and spacing by spacing bearing pin;
Gear A 18 meshes with the section of rack on energy storage tooth plate 14 tops; Gear B 19 respectively with the section of rack of energy storage tooth plate 14 bottoms, upper rack 17 and 28 engagements of lower tooth bar; The outboard end of upper rack 17 and lower tooth bar 28 connects respectively the interlocking linkage; Energy storage tooth plate 14 lower edge are provided with spacer.
Opening device is installed in female lock, opening device is comprised of sheet 26, electromagnet 27 under safety plate 21, lever arm 22, cam 23, unlatching motor 24, stopper arms upper slice 25, stopper arms, safety plate 21, lever arm 22 are coaxial to be assemblied on the bearing pin of opening motor 24 top lock body inwalls, and back-moving spring is housed; Under stopper arms upper slice 25 and stopper arms on the coaxial bearing pin that is assemblied in the lock body inwall of opening motor 24 sidepieces of sheet 26, and back-moving spring is housed;
Lever arm 22 is provided with locating groove; Safety plate 21 ends are provided with notch; Stopper arms upper slice 25 ends coordinate with lever arm 22, and are stuck in the notch of safety plate 21 ends; Under stopper arms, the middle part of sheet 26 1 sides is fixed with M type plectrum, and is provided with the plectrum that coordinates with stopper arms upper slice 25, and the lock body inwall of opposite side relevant position is equipped with electromagnet 27; When the lockset locking, lever arm 22 rides against stopper arms upper slice 25 ends, and stopper arms upper slice 25 inlay cards prevent from breaking away from the location because vibrations make lever arm 22 in safety plate 21 notches; The spacer of energy storage tooth plate 14 is stuck in the locating groove of lever arm 21, and energy storage tooth plate 14 is located.
Be fixed with cam 23 on the power output shaft of unlatching motor 24; Cam 23 coordinates with the M type plectrum end of sheet 26 under safety plate 21, stopper arms respectively, and M type plectrum middle part coordinates with safety plate 21 middle parts.
On mother's lock body of energy storage tooth plate 14 belows, be equipped with slidably locking tooth bar 29 and locking motor, the locking gear 30 on locking motor 31 power output shafts and 29 engagements of locking tooth bar; Locking tooth bar 29 is corresponding with the locking roller 11 of son lock, and during the lockset locking, locking tooth bar 29 under the drive of locking motor 31, stretches out and femalely lock and promote 10 swings of locking lever.
Described unlatching motor 24, electromagnet 27, locking motor 31 are connected with sensor and control circuit, and pass through DC power supply.
Mechanical action and operating principle during the work of the utility model lockset:
(1) by the outside handle operation locking of son lock, press as shown handle and drive square shaft 2 clockwise directions rotations, shifting block 1 swings clockwise with square shaft, shifting block 1 lower end coordinates with hyoplastron 3, promoting hyoplastron 3 slides left, the dead bolt of hyoplastron 3 front ends inserts in female lock lock body, promoting energy storage tooth plate 14 moves to left along energy-stored spring axle 13, the spacer of energy storage tooth plate 14 lower limbs is stirred lever arm 22 around the counterclockwise rotation of axle, the right-hand end of lever arm 22 is pushed up and is pressed stopper arms upper slice 25, it is slightly swung to the right, during when the right-hand end rising of lever arm 22 and higher than stopper arms upper slice 25 top, under the reduction torsion spring effect, stopper arms upper slice 25 swings left and resets, lever arm 22 rides against the top of stopper arms upper slice 25 under action of reset spring, lever arm 22 is located, simultaneously, the spacer of energy storage tooth plate 14 lower limbs embeds in the locating groove of lever arm 22, and energy storage tooth plate 14 positions are defined, energy-stored spring 16 on energy-stored spring axle 13 is energy storage state by front vertical plate 15 compressions of after-poppet 20 and energy storage tooth plate 14 at this moment.In the process that energy storage tooth plate 14 moves to left, the section of rack driven gear A 18 that energy storage tooth plate 14 is upper and lower and gear B 19 rotated, and gear B 19 turns clockwise and drives upper rack 17 and lower tooth bar 28 stretches out, and traction interlocking linkage is realized the primary and secondary lock interlocking.
(2) lockset automatic blocking: successively close the door leaf that son lock and female lock are housed, by roller tongue 8 location, start the locking motor 31 in female lock, locking motor 31 power output shafts counterclockwise rotate as shown, drive locking tooth bar 29 moves right and stretches out female lock lock body, promote the locking roller 11 of locking lever 10 lower ends, make locking lever 10 counter-clockwise swings, its upper end coordinates with hyoplastron 3, promoting hyoplastron 3 moves to left, make dead bolt insert female lock lock body, and promote energy storage tooth plate 14 left movement vertically, complete energy storage, locking action.After the locking process finished, 31 reverse rotations of locking motor drove locking tooth bar 29 and reset.
(3) lockset is opened automatically: open motor 24 and receive start signal, turn clockwise as shown, cam 23 promotes the M type plectrum of sheet 26 under stopper arms, make the right pendulum of sheet 26 under stopper arms, under stopper arms, sheet 26 drives stopper arms upper slice 25 swings, lever arm 22 separates with stopper arms upper slice 25, lever arm 22 loses the fulcrum alignment restrictions and can rotate around the axis, while M type plectrum is stirred safety plate 21 and is raised, the restriction of releasing to stopper arms upper slice 25, energy storage tooth plate 14 moves to right fast under the effect of energy-stored spring 16 and resets, driven gear B 19 is rotated counterclockwise, upper rack 17, lower tooth bar 28 reclaims, the lock pin of the interlocking linkage of locking up and down doorframe reclaims.Energy storage tooth plate 14 moves to right and promotes dead bolt and hyoplastron 3 moves to right, and the push rod top in dead bolt (the roller tongue corresponding with location-plate 6) presses location-plate 6 to swing, and breaks away from alignment pin 5 and controls, and son lock dead bolt is regained, and completes breakdown action.
The automatic unlatching of lockset also can be locked built-in electromagnet 27 by mother and be controlled, earthquake, gas leak etc. are unexpected to be occured when running into, sensor detects abnormal and sends start signal, electromagnet 27 starts, and upper and lower of adhesive stopper arms is done to the right to swing clockwise, sheet 26 and the right pendulum of stopper arms upper slice 25 under stopper arms, M type plectrum is upwards with safety plate 21 jack-up simultaneously, make safety plate 21 ends releasings to the constraint of stopper arms upper slice 25, energy storage tooth plate 14 moves to right and resets, and completes automatic breakdown action.
Embodiment 2
As can be seen from Figure 3, the present embodiment vertically is fitted with two toothed rack in son lock lock body as different from Example 1, and two tooth bars lay respectively at the both sides of gear D 9, and mesh with gear D 9; It is hinged with the interlocking linkage respectively that the other end of tooth bar stretches out son lock lock body.When hyoplastron 3 laterally slided, the flexible of two longitudinal racks controlled in hyoplastron 3 driven gear D 9 rotations.
Other structure of the present embodiment is identical with embodiment 1.
The above detailed description of technical solutions of the utility model being carried out by preferred embodiment is schematic but not pro forma restriction.Those skilled in the art is on the basis of reading the utility model manual, can modify to the technical scheme that embodiment puts down in writing, perhaps part technical characterictic wherein is equal to replacement, and these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of the utility model embodiment technical scheme.

Claims (3)

1. an interconnected primary and secondary lock, comprise opening device, and opening device is comprised of sheet (26), electromagnet (27) under safety plate (21), lever arm (22), cam (23), unlatching motor (24), stopper arms upper slice (25), stopper arms;
Safety plate (21), lever arm (22) be coaxial to be assemblied on the bearing pin of opening motor (24) top lock body inwall, and back-moving spring is housed; Under stopper arms upper slice (25) and stopper arms, sheet (26) is coaxial is assemblied on the bearing pin of opening motor (24) sidepiece lock body inwall, and back-moving spring is housed; Lever arm (22) is provided with locating groove; Safety plate (21) end is provided with notch; Stopper arms upper slice (25) end coordinates with lever arm (22), and is stuck in the notch of safety plate (21) end; Under stopper arms, the middle part of sheet (26) one sides is fixed with M type plectrum, and is provided with the plectrum that coordinates with stopper arms upper slice (25), and the lock body inwall of opposite side relevant position is equipped with electromagnet (27); Be fixed with cam (23) on the power output shaft of unlatching motor (24); Cam (23) coordinates with the M type plectrum end of sheet (26) under safety plate (21), stopper arms respectively, coordinates in the middle part of M type plectrum middle part and safety plate (21);
It is characterized in that: formed by son lock and female lock;
The son lock comprises son lock lock body, handle, shifting block (1), square shaft (2), hyoplastron (3), locking lever (10); Square shaft (2) is inserted on son lock lock body, and an end of square shaft (2) is fixed with handle, and the other end is fixed with shifting block (1); Be equipped with slidably hyoplastron (3) on the lock body of square shaft (2) below, hyoplastron (3) one sides are fixed with the dead bolt that can insert female lock lock body; Location-plate (6) is hinged on hyoplastron (3), and back-moving spring is installed; Be fixed with alignment pin (5) on son lock lock body inwall, during hyoplastron (3) locking, alignment pin (5) coordinates with location-plate (6) end;
The inwall of son lock lock body is equipped with one group of pitch wheel C(4) and gear D (9); Gear C (4) meshes with the section of rack on hyoplastron (3) top; The section of rack engagement of gear D (9) and hyoplastron (3) bottom, or respectively be inserted in son lock lock body and be positioned at two longitudinal racks of gear D (9) both sides and the section of rack engagement of hyoplastron (3) bottom;
On the son lock lock body of hyoplastron (3) below, locking roller (11) is equipped with in locking lever (10) lower end by the bearing pin hinge mounted for locking lever (10) middle part;
Female lock comprises female lock lock body, energy-stored spring axle (13), energy storage tooth plate (14), gear A (18), gear B (19), upper rack (17), lower tooth bar (28), locking tooth bar (29), locking gear (30), locking motor (31);
Female lock lock body upper inside wall and bottom respectively are provided with one group of fore-stock (12) and after-poppet (20), all are fixed with an energy-stored spring axle (13) on every group of forward and backward support; Energy storage tooth plate (14) is provided with front vertical plate (15) and back vertical plate, and the forward and backward riser of energy storage tooth plate (14) is sleeved on energy-stored spring axle (13), and corresponding with the latch bolt position of son lock lock body; Be set with energy-stored spring (16) on energy-stored spring axle (13), energy-stored spring (16) is positioned between the front vertical plate (15) of the after-poppet (20) of lock body and energy storage tooth plate (14); Female lock lock body inwall is equipped with pitch wheel A(18) and gear B (19); Upper rack (17) and lower tooth bar (28) vertically are inserted into respectively in female lock lock body and are positioned at the both sides of gear B (19); Gear A (18) meshes with the section of rack on energy storage tooth plate (14) top; Gear B (19) respectively with the section of rack of energy storage tooth plate (14) bottom and upper rack (17), lower tooth bar (28) engagement; Energy storage tooth plate (14) is provided with spacer;
Opening device is arranged on mother's lock body inwall of energy storage tooth plate (14) sidepiece, and energy storage tooth plate (14) is when being in locking states, and the locating groove on the lever arm of opening device (22) matches with the spacer of energy storage tooth plate (14);
On mother's lock body of energy storage tooth plate (14) below, be equipped with slidably locking tooth bar (29) and locking motor (31), locking tooth bar (29) is corresponding with the locking roller (11) of son lock; Locking gear (30) on locking motor (31) power output shaft and locking tooth bar (29) engagement.
2. a kind of interconnected primary and secondary lock according to claim 1, it is characterized in that: described dead bolt comprises roller tongue (8) and middle tongue (7), roller tongue (8) but the end be provided with the roller of resilience; Push rod is equipped with in corresponding with location-plate (6) dead bolt inside, and the push rod end coordinates with location-plate (6).
3. a kind of interconnected primary and secondary lock according to claim 1, it is characterized in that: described unlatching motor (24), electromagnet (27), locking motor (31) are connected with sensor and control circuit.
CN 201220502208 2012-09-28 2012-09-28 Interconnected primary and secondary lock Expired - Lifetime CN202926040U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220502208 CN202926040U (en) 2012-09-28 2012-09-28 Interconnected primary and secondary lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220502208 CN202926040U (en) 2012-09-28 2012-09-28 Interconnected primary and secondary lock

Publications (1)

Publication Number Publication Date
CN202926040U true CN202926040U (en) 2013-05-08

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Application Number Title Priority Date Filing Date
CN 201220502208 Expired - Lifetime CN202926040U (en) 2012-09-28 2012-09-28 Interconnected primary and secondary lock

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828661A (en) * 2012-09-28 2012-12-19 刘丽亭 Interconnected composite lock
CN111206831A (en) * 2019-12-31 2020-05-29 株洲鼎阳环保机电技术有限公司 Novel electromechanical integrated lock

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828661A (en) * 2012-09-28 2012-12-19 刘丽亭 Interconnected composite lock
CN111206831A (en) * 2019-12-31 2020-05-29 株洲鼎阳环保机电技术有限公司 Novel electromechanical integrated lock
CN111206831B (en) * 2019-12-31 2021-07-23 株洲鼎阳环保机电技术有限公司 Novel electromechanical integrated lock

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