CN105464469A - Intelligent lock with front clutch - Google Patents
Intelligent lock with front clutch Download PDFInfo
- Publication number
- CN105464469A CN105464469A CN201610070006.5A CN201610070006A CN105464469A CN 105464469 A CN105464469 A CN 105464469A CN 201610070006 A CN201610070006 A CN 201610070006A CN 105464469 A CN105464469 A CN 105464469A
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- CN
- China
- Prior art keywords
- insert
- lock
- slot
- handle assembly
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/0056—Locks with adjustable or exchangeable lock parts
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B3/00—Fastening knobs or handles to lock or latch parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention relates to an intelligent lock with a front clutch. The intelligent lock at least comprises a handle assembly, a clutch assembly fixedly connected with the handle assembly, a reset connecting piece located on the side, away from the handle assembly, of the clutch assembly and a lock body connected with the reset connecting piece in a matched mode. The reset connecting piece is provided with two insertion grooves arranged symmetrically. The clutch assembly at least comprises an insertion piece and a driving device, wherein the insertion piece is provided with an insertion head, the driving device drives the insertion head to stretch into one of the insertion grooves, and the length of each insertion groove is larger than the width of the insertion head. Since the two insertion grooves are arranged symmetrically, when installed on site, the door lock can be directly changed in the left direction and the right direction by adjusting the installation position of the handle assembly and the initial state of the insertion piece according to the demand for the installation direction of the door lock, and there is no need to disassemble the whole lock and then assemble the lock in a reverse direction; as a result, installation is convenient, there is no need to arrange two intelligent locks, and production cost is lowered.
Description
Technical field
The present invention relates to door lock technical field, particularly a kind of smart lock with preposition clutch.
Background technology
In current smart lock industry, the application of clutch is mainly divided three classes: preposition clutch (namely clutch is positioned at front panel), mid-clutch (namely clutch is positioned at lock body), rearmounted clutch (namely clutch is positioned at rear board), but due to preposition clutch can meet front handlebar free with on carry and locking, can seamlessly with traditional mechanical lock coordinate again, remain traditional mechanical lock stablize, safety characteristic, for upgrading smart lock brings great convenience and safety, therefore compare mid-clutch and rearmounted clutch is applied even more extensively.There is the smart lock of preposition clutch at present on the market, just determine enabling direction when dispatching from the factory, door lock left and right directions can not directly be exchanged, and there is the problem of the on-the-spot left and right to handle commutation difficulty, the assembling again that commutates after generally needing integral demounting realizes, and is therefore unfavorable for installing; Or producer needs to produce the different smart lock of two covers to L.H.flapped door or R.H.flapped door, considerably increases the cost of production of smart lock.
Summary of the invention
The object of the present invention is to provide a kind of smart lock with preposition clutch, door lock left and right directions can directly be exchanged, and reduces cost of production.
For realizing object of the present invention, the technical scheme taked is:
A kind of smart lock with preposition clutch, at least comprise handle assembly, the clutch component be fixedly connected with handle assembly, be positioned at the reset connector of clutch component away from handle assembly side, the lock body be connected with reset connector, reset connector is provided with symmetrically arranged two slots, clutch component at least comprises the insert be provided with slot insert head one to one, and drive insert head to stretch into the drive unit of corresponding slot, the length of slot is larger than the width of insert head, handle assembly, the central axis of reset connector and lock body is all located along the same line, line and this linear vertical of two insert heads are arranged.
When be in lock a door state time, drive unit drives insert to insert in one of them slot, and offset with the side of slot, because the width of insert head is less than the length of slot, there is spacing in the opposite side of insert head and slot, when handle assembly drives insert head to rotate forward to the side that there is spacing with slot, handle assembly is in free state, and lock body can not be driven to open the door; When handle assembly drives insert head to the sideway swivel offseted with slot, insert head drives reset connector to carry out counter-rotating, and lock body realizes locking, and therefore ensures the safety of door lock.When smart lock receives correct door open command, drive unit drives insert stretch out original slot and insert in another one slot, when handle assembly drives insert head to rotate forward, insert head drives reset connector to rotate forward, thus drives lock body to open the door.Because two slots are symmetrical arranged, above-mentioned motion process is symmetric process completely, when door lock is installed at the scene, according to the installation direction demand of door lock, by the installation site of adjustment handle assembly, the original state of insert, door lock left and right directions directly being exchanged, assembling again without the need to commutating after integral demounting, therefore easy for installation, also without the need to being equipped with two smart locks, cost of production is reduced.
Below technical scheme is further illustrated:
Further, the first spring that drive unit at least comprises motor, the worm screw be connected with the turning cylinder of motor, two ends are connected with worm screw and insert respectively.Worm screw is by the different rotation directions of motor rotation axis, and drive the first spring to realize compression or extend driving insert to stretch in the first slot or the second slot, type of drive simple and flexible, energy consumption is low, and structure is simple, reduces structure and takes up room.
Further, insert head comprises the first latch and the second latch that are oppositely arranged, and insert also comprises the plug connections that both sides are connected with the first latch and the second latch respectively, and the first spring is connected with plug connections away from one end of worm screw.First spring drives plug connections to swing, plug connections drives the first latch and the second latch to move simultaneously, while making the first latch stretch into one of them slot, the second slot stretches out another one slot, or the second slot stretches into another one slot while making the first latch stretch out one of them slot, insert is made only to stretch into one of them slot, structure is simple, and commutation control is convenient.
Be further, clutch component also comprises the housing being provided with container cavity, insert and drive unit are all placed in container cavity, housing is provided with the first through hole and the second through hole that are communicated with container cavity, the two ends of the first through hole are oppositely arranged with the first latch and one of them slot respectively, and the two ends of the second through hole are oppositely arranged with the second latch and another one slot respectively.Insert and drive unit are placed in housing, make clutch component monnolithic case more attractive in appearance, make the structure of smart lock simpler, install more convenient.
Further, plug connections is provided with slide block towards the side of container cavity, and the inwall of container cavity is provided with the chute coordinated with slide block.When first Spring driving plug connections is swung, slide block, along slide, play the guiding role to the movement of plug connections, makes the movement of plug connections more steady.
Further, handle assembly at least comprises handle, the handle head be fixedly connected with handle, is socketed on bearing, back-moving spring and reseting plate on handle head successively, and reseting plate and clutch component removably connect.Handle assembly rotates handle head by handle, and drive clutch component to rotate by handle head simultaneously, and by the effect of back-moving spring and reseting plate, the anglec of rotation of control handle, and be beneficial to the reset of handle head, flexibly simple to operate, and clutch component is placed on handle head, is beneficial to minimizing structure and takes up room.
Further, the smart lock with preposition clutch also comprises axle sleeve, and the two ends of axle sleeve are connected with reset connector and lock body respectively.
Further, the command receiver that the smart lock with preposition clutch also comprises controller, is electrically connected with controller, controller and drive unit are electrically connected.Command receiver receives door open command, and the information received is sent to controller, and controller judges by the information of reception and default information are carried out contrast, thus the work of accessory drive, make smart lock safety and reliability.
Further, command receiver is Fingerprint Identification Unit, voice recognition unit or card reader.
Compared with prior art, the present invention has following beneficial effect:
The present invention be in lock a door state time, drive unit drives insert to insert in one of them slot, and offset with the side of slot, because the width of insert head is less than the length of slot, there is spacing in the opposite side of insert head and slot, when handle assembly drives insert head to rotate forward to the side that there is spacing with slot, handle assembly is in free state, and lock body can not be driven to open the door; When handle assembly drives insert head to the sideway swivel offseted with slot, insert head drives reset connector to carry out counter-rotating, and lock body realizes locking, and therefore ensures the safety of door lock.When smart lock receives correct door open command, drive unit drives insert stretch out original slot and insert in another one slot, when handle assembly drives insert head to rotate forward, insert head drives reset connector to rotate forward, thus drives lock body to open the door.Because two slots are symmetrical arranged, above-mentioned motion process is symmetric process completely, when door lock is installed at the scene, according to the installation direction demand of door lock, by the installation site of adjustment handle assembly, the original state of insert, door lock left and right directions directly being exchanged, assembling again without the need to commutating after integral demounting, therefore easy for installation, also without the need to being equipped with two smart locks, cost of production is reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation that the embodiment of the present invention has the smart lock of preposition clutch;
Fig. 2 is the scheme of installation of embodiment of the present invention clutch component, reset connector and return unit;
Fig. 3 is the exploded perspective view of embodiment of the present invention clutch component;
Fig. 4 is the first working state schematic representation of embodiment of the present invention clutch component;
Fig. 5 is the second working state schematic representation of embodiment of the present invention clutch component.
Description of reference numerals:
10. handle assembly, 110. handle head, 120. bearing, 130. back-moving spring, 140. reseting plate, 150. handle decoration mountings, 160. handle pipes, 170. handle inner sleeves, 180. handle fixed screws, 20. clutch components, 211. insert head, 2111. the first latch, 2112. the second latch, 212. plug connections, 2121. slide block, 220. housing, 221. container cavity, 222. first through holes, 223. second through holes, 224. chute, 230. drive unit, 231. motor, 232. worm screw, 233. first springs, 30. reset connectors, 310. slot, 40. axle sleeves, 50. first jump rings, 60. spacing cover plates, 70. nuts, 80. locked spacers, 90. second jump rings.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
As shown in Figure 1 to Figure 3, a kind of smart lock with preposition clutch, at least comprise handle assembly 10, the clutch component 20 be fixedly connected with handle assembly 10, be positioned at the reset connector 30 of clutch component 20 away from handle assembly 10 side, the lock body (accompanying drawing does not identify) be connected with reset connector 30, reset connector 30 is provided with symmetrically arranged two slots 310, clutch component 20 at least comprises the insert be provided with slot 310 insert head 211 one to one, and drive insert head 211 to stretch into the drive unit 230 of corresponding slot 310, the length of slot 310 is larger than the width of insert head 211, handle assembly 10, the central axis of reset connector 30 and lock body is all located along the same line, line and this linear vertical of two insert heads 211 are arranged.
As shown in Figure 2 and Figure 4, when be in lock a door state time, drive unit 230 drives insert to insert in one of them slot 310, and offset with the side of slot 310, because the width of insert head 211 is less than the length of slot 310, there is spacing, when handle assembly 10 drives insert head 211 to turn clockwise with the opposite side of slot 310 in insert head 211, handle assembly 10 is in free state, and lock body can not be driven to open the door; When handle assembly 10 drives insert head 211 to be rotated counterclockwise, insert head 211 drives reset connector 30 to be rotated counterclockwise, and lock body realizes locking, and therefore ensures the safety of door lock.When smart lock receives correct door open command, as shown in Figure 2 and Figure 5, drive unit 230 drives insert to stretch out original slot 310 and inserts in another one slot 310, when handle assembly 10 drives insert head 211 to turn clockwise, insert head 211 drives reset connector 30 to turn clockwise, thus drives lock body to open the door.Because two slots 310 are symmetrical arranged, above-mentioned motion process is symmetric process completely, when door lock is installed at the scene, according to the installation direction demand of door lock, by the installation site of adjustment handle assembly 10, the original state of insert, door lock left and right directions directly being exchanged, assembling again without the need to commutating after integral demounting, therefore easy for installation, also without the need to being equipped with two smart locks, cost of production is reduced.
In the present embodiment, the right side, front that handle assembly 10 is positioned at Fig. 2 is put, and insert stretches out to the right at closing time, and handle assembly 10 presses down clockwise, is in free state, above carries, and locks, and during enabling, insert stretches out left, and handle assembly 10 presses down clockwise, opens the door; The left side, front that handle assembly 10 can also be positioned at Fig. 2 is according to actual needs put, insert stretches out left at closing time, the central axis of handle assembly 10, reset connector 30 and lock body is all located along the same line, line and this linear vertical of two insert heads 211 are arranged, by simply adjusting the installation site of handle assembly 10, the original state of insert enables door lock left and right directions directly exchange.
As depicted in figs. 1 and 2, handle assembly 10 at least comprises handle (accompanying drawing does not identify), the handle head 110 be fixedly connected with handle, is socketed on bearing 120, back-moving spring 130 and reseting plate 140 on handle head 110 successively, and reseting plate 140 and clutch component 20 removably connect.Handle assembly 10 rotates handle head 110 by handle, and drive clutch component 20 to rotate by handle head 110 simultaneously, and pass through the effect of back-moving spring 130 and reseting plate 140, the anglec of rotation of control handle, and be beneficial to the reset of handle head 110, flexibly simple to operate, and clutch component 20 is placed on handle head 110, is beneficial to minimizing structure and takes up room.
As shown in Figures 3 to 5, the first spring 233 that drive unit 230 at least comprises motor 231, the worm screw 232 be connected with the turning cylinder of motor 231, two ends are connected with worm screw 232 and plug connections 212 respectively.By controlling the direction of motor 231 input current, control the rotation direction of turning cylinder, worm screw 232 is by the different rotation directions of turning cylinder, the first spring 233 is driven to realize compression or extend driving insert to stretch in the first slot 310 or the second slot 310, type of drive simple and flexible, energy consumption is low, and structure is simple, reduces structure and takes up room.
As shown in Figures 3 to 5, insert head 211 comprises the first latch 2111 and the second latch 2112 be oppositely arranged, insert also comprises plug connections 212, first spring 233 that both sides are connected with the first latch 2111 and the second latch 2112 respectively and is connected with plug connections 212 away from one end of worm screw 232.Plug connections 212 drives the first latch 2111 and the second latch 2112 to move simultaneously, while making the first latch 2111 stretch into one of them slot 310, the second slot 310 stretches out another one slot 310, or second slot 310 stretches into another one slot 310 while making the first latch 2111 stretch out one of them slot 310, insert is made only to stretch into one of them slot 310, structure is simple, and commutation control is convenient.Insert can also be set to the body of rod that two ends are provided with insert head 211 according to actual needs, and the first spring 233 is directly connected with this body of rod.
As shown in Figures 3 to 5, clutch component 20 also comprises the housing 220 being provided with container cavity 221, insert and drive unit 230 are all placed in container cavity 221, housing 220 is provided with the first through hole 222 and the second through hole 223 be communicated with container cavity 221, the two ends of the first through hole 222 are oppositely arranged with the first latch 2111 and one of them slot 310 respectively, the two ends of the second through hole 223 are oppositely arranged with the second latch 2112 and another one slot 310 respectively, and the first latch 2111 is vertical with the axis of housing 220 with the line of the second latch 2112.Insert and drive unit 230 are placed in housing 220, make clutch component 20 monnolithic case more attractive in appearance, make the structure of smart lock simpler, install more convenient.Drive unit 230 can also be arranged in other positions according to actual needs.
As shown in Figure 4 and Figure 5, plug connections 212 is provided with slide block 2121 towards the side of container cavity 221, and the inwall of container cavity 221 is provided with the chute 224 coordinated with slide block 2121.When making the first spring 233 drive plug connections 212 to swing, slide block 2121 slides along chute 224, play the guiding role to the movement of plug connections 212, makes the movement of plug connections 212 more steady.
The command receiver (accompanying drawing does not identify) that smart lock also comprises controller (accompanying drawing does not identify), is electrically connected with controller, controller and drive unit 230 are electrically connected.Command receiver receives door open command, and the information received is sent to controller, and controller judges by the information of reception and default information are carried out contrast, thus the work of accessory drive 230, make smart lock safety and reliability.
In the present embodiment, command receiver is card reader, and command receiver can also adopt other forms such as Fingerprint Identification Unit, voice recognition unit according to actual needs.
As shown in Figure 1, smart lock also comprises axle sleeve 40, first jump ring 50, spacing cover plate 60, nut 70, locked spacer 80, second jump ring 90, and handle assembly 10 also comprises handle decoration mounting 150, handle pipe 160, handle inner sleeve 170, handle fixed screw 180.During installation, first bearing 120 and front panel are pressed assembling, add the second jump ring 90 and cause bearing 120 to get loose to prevent violence to be pulled outwardly; Successively handle head 110 inserted from below bearing 120 inner ring, first-class back-moving spring 130 again, snap in reseting plate 140, locked spacer 80 tightening with nut 70, roll up locked spacer 80 and prevent nut 70 from getting loose; Then screw down after clutch component 20 and reseting plate 140 being assembled; Axle sleeve 40 and reset connector 30 assembled and use the first jump ring 50 to fix, is then placed on above clutch component 20, finally put into Graphite pad and spacing cover plate 60 and be screwed; Finally the handle with handle decoration mounting 150, handle inner sleeve 170, handle pipe 160 to be installed on handle head 110 and to tighten up with handle fixed screw 180 and fix.As shown in Figure 1, the central axis of the housing 220 of handle pipe 160, handle inner sleeve 170, handle head 110, bearing 120, second jump ring 90, back-moving spring 130, reseting plate 140, locked spacer 80, clutch component 20, reset connector 30, axle sleeve 40, first jump ring 50 is all located along the same line, smart lock is in motion process, and all parts all rotates around this straight line.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this manual is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. one kind has the smart lock of preposition clutch, it is characterized in that, at least comprise handle assembly, the clutch component be fixedly connected with described handle assembly, be positioned at the reset connector of described clutch component away from described handle assembly side, the lock body be connected with described reset connector, described reset connector is provided with symmetrically arranged two slots, described clutch component at least comprises the insert be provided with described slot insert head one to one, and drive described insert head to stretch into the drive unit of corresponding described slot, the length of described slot is larger than the width of described insert head, described handle assembly, the central axis of described reset connector and described lock body is all located along the same line, line and this linear vertical of two described insert heads are arranged.
2. the smart lock with preposition clutch according to claim 1, is characterized in that, the first spring that described drive unit at least comprises motor, the worm screw be connected with the turning cylinder of described motor, two ends are connected with described worm screw and described insert respectively.
3. the smart lock with preposition clutch according to claim 2, it is characterized in that, described insert head comprises the first latch and the second latch that are oppositely arranged, described insert also comprises the plug connections that both sides are connected with described first latch and the second latch respectively, and described first spring is connected with described plug connections away from one end of described worm screw.
4. the smart lock with preposition clutch according to claim 3, it is characterized in that, described clutch component also comprises the housing being provided with container cavity, described insert and described drive unit are all placed in described container cavity, described housing is provided with the first through hole and the second through hole that are communicated with described container cavity, the two ends of described first through hole are oppositely arranged with slot described in described first latch and one of them respectively, and the two ends of described second through hole are oppositely arranged with slot described in described second latch and another one respectively.
5. the smart lock with preposition clutch according to claim 4, is characterized in that, described plug connections is provided with slide block towards the side of described container cavity, and the inwall of described container cavity is provided with the chute coordinated with described slide block.
6. the smart lock with preposition clutch according to claim 1, it is characterized in that, described handle assembly at least comprises handle, the handle head be fixedly connected with described handle, is socketed on bearing, back-moving spring and reseting plate on described handle head successively, and described reseting plate and described clutch component removably connect.
7. the smart lock with preposition clutch according to claim 1, is characterized in that, also comprise axle sleeve, and the two ends of described axle sleeve are connected with described reset connector and described lock body respectively.
8. the smart lock with preposition clutch according to any one of claim 1 to 7, is characterized in that, the command receiver also comprising controller, be electrically connected with described controller, described controller and described drive unit are electrically connected.
9. the smart lock with preposition clutch according to claim 8, is characterized in that, described command receiver is Fingerprint Identification Unit, voice recognition unit or card reader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070006.5A CN105464469B (en) | 2016-01-29 | 2016-01-29 | Smart lock with preposition clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070006.5A CN105464469B (en) | 2016-01-29 | 2016-01-29 | Smart lock with preposition clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105464469A true CN105464469A (en) | 2016-04-06 |
| CN105464469B CN105464469B (en) | 2017-09-29 |
Family
ID=55602583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610070006.5A Active CN105464469B (en) | 2016-01-29 | 2016-01-29 | Smart lock with preposition clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105464469B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678563A (en) * | 2018-08-16 | 2018-10-19 | 刘建刚 | A kind of door lock |
| CN109281535A (en) * | 2018-11-07 | 2019-01-29 | 边琢淳 | A kind of double drive clutch of lockset |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02157376A (en) * | 1988-11-08 | 1990-06-18 | Schulte Schlagbaum Ag | Lock |
| CN2616616Y (en) * | 2003-02-11 | 2004-05-19 | 廖华 | Double driving clutch for digital intelligent lock |
| CN202131855U (en) * | 2011-06-29 | 2012-02-01 | 蔡振巧 | Double-circuit double-driving clutch anti-theft lock body |
| CN202831808U (en) * | 2012-05-30 | 2013-03-27 | 江门市科裕智能科技有限公司 | Novel intelligent door lock handle clutch mechanism |
| CN205348970U (en) * | 2016-01-29 | 2016-06-29 | 广东力维智能锁业有限公司 | Intelligence lock with leading separation and reunion |
-
2016
- 2016-01-29 CN CN201610070006.5A patent/CN105464469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02157376A (en) * | 1988-11-08 | 1990-06-18 | Schulte Schlagbaum Ag | Lock |
| CN2616616Y (en) * | 2003-02-11 | 2004-05-19 | 廖华 | Double driving clutch for digital intelligent lock |
| CN202131855U (en) * | 2011-06-29 | 2012-02-01 | 蔡振巧 | Double-circuit double-driving clutch anti-theft lock body |
| CN202831808U (en) * | 2012-05-30 | 2013-03-27 | 江门市科裕智能科技有限公司 | Novel intelligent door lock handle clutch mechanism |
| CN205348970U (en) * | 2016-01-29 | 2016-06-29 | 广东力维智能锁业有限公司 | Intelligence lock with leading separation and reunion |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678563A (en) * | 2018-08-16 | 2018-10-19 | 刘建刚 | A kind of door lock |
| CN108678563B (en) * | 2018-08-16 | 2024-05-28 | 深圳市易雷特科技有限公司 | Door lock |
| CN109281535A (en) * | 2018-11-07 | 2019-01-29 | 边琢淳 | A kind of double drive clutch of lockset |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105464469B (en) | 2017-09-29 |
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