CN109555362A - Intelligent door lock - Google Patents
Intelligent door lock Download PDFInfo
- Publication number
- CN109555362A CN109555362A CN201910079823.0A CN201910079823A CN109555362A CN 109555362 A CN109555362 A CN 109555362A CN 201910079823 A CN201910079823 A CN 201910079823A CN 109555362 A CN109555362 A CN 109555362A
- Authority
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- China
- Prior art keywords
- spiral
- rotary shaft
- tube
- door lock
- intelligent door
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
- E05B15/0013—Followers; Bearings therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The invention relates to the technical field of locks, and discloses an intelligent door lock, which comprises: a drive mechanism, the drive mechanism comprising: the end face of the first end of the rotating shaft is provided with a key hole, the second end of the rotating shaft is provided with a spiral structure, one side of the spiral structure, which is far away from the first end of the rotating shaft, is provided with a first spiral surface extending in the direction of being far away from the first end of the rotating shaft, and the spiral central axis of the first spiral surface is superposed with the axis line of the rotating shaft; the clutch driving part is positioned on one side, away from the rotating shaft, of the spiral structure, and one side, facing the spiral structure, of the clutch driving part is provided with a second spiral surface matched with the first spiral surface. In this intelligence lock, clutch driving piece and helical structure face-to-face contact cooperation, the atress is even, increases clutch driving piece's action stability, and can effectively reduce the wearing and tearing between clutch driving piece and the helical structure, is favorable to prolonging the life of intelligence lock.
Description
Technical field
The present invention relates to lock technology field, in particular to a kind of intelligent door lock.
Background technique
Door lock is common life appliance in people's life, and the type of door lock and pattern are also more next in currently available technology
It is more, wherein intelligent door lock is a kind of easy to use and safety also higher lockset, and intelligent door lock is in addition to fingerprint, close
The aptitude manners such as code are also provided with key unlocking except unlocking, and the setting of the keyhole of door lock mainly has positive aperture or bottom
Aperture two ways.Wherein, the fairly simple convenience of front unlocking, directly controls lock core, but compares influence in design
The appearance aesthetic feeling of lockset；Bottom unlocking is complex relative to front unlocking structure, because generally by clutch control
After bolt processed links together door handle and movable block, rotating handles achieve the purpose that unlocking, this has a rotation in the process
Turn lifting mechanism, the effect of this spiral ascending mechanism is: after key is connect with rotating mechanism, by rotating key, rotation
Lifting mechanism up pushes up clutch, drives bolt movement, thus fixed square bar and handle.The rotation in design rises machine at present
Structure and clutch are the way of contact of single line stress, lead to discontinuity, and spiral ascending mechanism is prone to wear, deforms, and are easy
Cause key unlocking insensitive.
Summary of the invention
The invention discloses a kind of intelligent door locks, this is stated in intelligent door lock, clutch actuator with helical structure circumferential direction
The axis extending direction movement along helical structure is moved to drive clutch operating, and clutch actuator and helical structure face face
It is engaged, uniform force increases the action stability of clutch actuator, and can effectively reduce clutch actuator and spiral shell
The abrasion between structure is revolved, the service life of intelligent door lock is conducive to extend.
In order to achieve the above objectives, the present invention the following technical schemes are provided:
A kind of intelligent door lock, comprising: described for the driving mechanism of the clutch operating to be connect and driven with clutch
Driving mechanism includes:
Rotary shaft, the end face of the first end of the rotary shaft are equipped with the keyhole extended along the axial line of the rotary shaft,
The second end of the rotary shaft be equipped with helical structure, the helical structure away from the rotary shaft first end side have to
The first helicoid extended away from the direction of the rotary shaft first end, the spiral center axis of first helicoid and the rotation
The axial line of shaft is overlapped；
Positioned at the helical structure away from the rotary shaft side and can be along the extension side of the axial line of the rotary shaft
To the clutch actuator of movement, the clutch actuator has and first spiral towards the side of the helical structure
Second helicoid of face cooperation, and the clutch actuator connects away from the side of second helicoid and the clutch
It connects.
Above-mentioned intelligent door lock includes the driving mechanism for driving clutch operating, and driving mechanism includes a rotary shaft,
Wherein, rotary shaft is installed on door-plate, when being installed on door-plate, can rotate around central axis relative to door-plate, the tool of rotary shaft
There is first end and second end away from one another, the first end end face of rotary shaft is equipped with keyhole, and user can be by inserting key
Enter keyhole, and rotate key, rotate rotary shaft with key, the second end of rotary shaft is provided with helical structure, helical structure
It is fixedly connected, rotary shaft can be rotated with rotary shaft, helical structure has away from the side of rotary shaft to away from rotary shaft
The first helicoid that direction extends, helical structure is provided with clutch actuator away from the side of rotary shaft, and clutch drives
Part has the second helicoid cooperated with the first helicoid towards the side of helical structure, that is, clutch actuator and spiral knot
Cooperated between structure by plane-plane contact, and clutch actuator can be with the circumferential movement of helical structure along the axis side of rotary shaft
To movement, and then clutch actuator drives clutch operating.
In above-mentioned intelligent door lock, clutch actuator is with the circumferential movement of helical structure along the axis extension side of helical structure
To movement to drive clutch operating, and clutch actuator and helical structure plane-plane contact cooperate, and uniform force increases clutch
The action stability of device actuator, and the abrasion between clutch actuator and helical structure can be effectively reduced, be conducive to prolong
The service life of long intelligent door lock.
Optionally, the helical structure includes being set to the second end of the rotary shaft and being arranged with the concentric rotation axis
The barrel of first spiral-tube, first spiral-tube forms first helicoid away from the surface of the rotary shaft；
The clutch actuator includes the second spiral-tube with first spiral-tube cooperation, second spiral-tube
The surface of barrel towards first spiral-tube forms second helicoid.
It optionally, further include being set between first spiral-tube and second spiral-tube and for second spiral shell
Cylinder is revolved relative to first spiral-tube along the guiding mechanism of axial action.
Optionally, the guiding mechanism includes being fixed on the positioning and guiding being arranged in first spiral-tube and coaxially
It covers and is fixed in second spiral-tube and protrude into the positioning and guiding set and cover leading for clearance fit with the positioning and guiding
Xiang Zhu, positioning and guiding set inside, which is equipped with, axially extends guide groove, is equipped on the outside of the guide post sliding with the guide groove
The sliding block of dynamic cooperation.
Optionally, elastic reset component is equipped between first spiral-tube and second spiral-tube.
Optionally, the elastic reset component includes: the bullet being set between the guide post and positioning and guiding set
Spring, one end of the spring are connected to the positioning and guiding set inner bottom surface, and the guide post that the other end is connected to protrudes into described
The end face of one end in positioning and guiding set.
Optionally, the intelligent door lock further includes for the fixed plate fixed with door-plate, and the fixed plate is located at the spiral shell
The side that structure deviates from the clutch actuator is revolved, the fixed plate is equipped with through-hole, and the rotary shaft is equipped with the one of keyhole
End is rotatably assorted across the through-hole and with the through-hole.
Optionally, the fixed plate is set to the rotation axis connection away from the side of the helical structure and for limiting
The position-limit mechanism of the rotation angle of the fixed rotary shaft.
Optionally, the position-limit mechanism includes the snap ring for being sheathed on the rotary shaft end, and the snap ring peripheral side is equipped with
Protruding block is installed on the fixed plate and is located at snap ring side limited block.
Optionally, the clutch actuator is equipped with away from the side of the helical structure for connecting with the clutch
Clutch contact block.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of intelligent door lock provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the helical structure of the intelligent door lock in Fig. 1；
Fig. 3 is the structural schematic diagram of the clutch actuator of the intelligent door lock in Fig. 1；
Fig. 4 is a kind of overall structure diagram of intelligent door lock provided in an embodiment of the present invention；
Fig. 5 is a kind of overall structure diagram of intelligent door lock provided in an embodiment of the present invention；
Icon: 1- rotary shaft；2- helical structure；3- clutch actuator；4- positioning and guiding set；5- guide post；6- clutch
Device contact block；7- fixed plate；The first helicoid of 21-；The second helicoid of 31-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, the embodiment of the invention provides a kind of intelligent door locks, comprising: is used for and clutch
The driving mechanism of clutch operating is connected and drives, driving mechanism includes: rotary shaft 1, and the end face of the first end of rotary shaft 1 is equipped with
The keyhole extended along the axial line of rotary shaft 1, the second end of rotary shaft 1 are equipped with helical structure 2, and helical structure 2 is away from rotation
The side of the first end of axis 1 has the first helicoid 21 extended to the direction away from 1 first end of rotary shaft, the first helicoid 21
Spiral center axis be overlapped with the axial line of rotary shaft 1；Positioned at helical structure 2 away from rotary shaft 1 side and can be along rotary shaft
1 axial line extending direction movement clutch actuator 3, clutch actuator 3 towards the side of helical structure 2 have with
Second helicoid 31 of the first helicoid 21 cooperation, and side and clutch of the clutch actuator 3 away from the second helicoid 31
Connection.
Above-mentioned intelligent door lock includes the driving mechanism for driving clutch operating, and driving mechanism includes a rotary shaft 1,
Wherein, rotary shaft 1 is installed on door-plate, when being installed on door-plate, can rotate around central axis relative to door-plate, rotary shaft 1
With first end and second end away from one another, the first end end face of rotary shaft 1 is equipped with keyhole, and user can be by by key
It is inserted into keyhole, and rotates key, rotates rotary shaft 1 with key, the second end of rotary shaft 1 is provided with helical structure 2, spiral
Structure 2 is fixedly connected with rotary shaft 1, can be rotated to rotary shaft 1, and helical structure 2 has away from the side of rotary shaft 1 to deviating from
The first helicoid 21 that the direction of rotary shaft 1 extends, helical structure 2 are provided with clutch actuator away from the side of rotary shaft 1
3, and clutch actuator 3 has the second helicoid 31 cooperated with the first helicoid 21 towards the side of helical structure 2, that is,
Cooperated between clutch actuator 3 and helical structure 2 by plane-plane contact, and clutch actuator 3 can be with helical structure 2
Circumferential movement is acted along the axis direction of rotary shaft 1, and then clutch actuator 3 drives clutch operating.
In above-mentioned intelligent door lock, clutch actuator 3 prolongs with the circumferential movement of helical structure 2 along the axis of helical structure 2
Direction movement is stretched to drive clutch operating, and clutch actuator 3 and 2 plane-plane contact of helical structure cooperate, uniform force increases
Add the action stability of clutch actuator 3, and the abrasion between clutch actuator 3 and helical structure 2 can be effectively reduced,
Guarantee the sensitivity unlocked, and is conducive to extend the service life of intelligent door lock.
Specifically, helical structure 2 includes the second end set on rotary shaft 1 and the first spiral with the coaxial arrangement of rotary shaft 1
The barrel of cylinder, the first spiral-tube forms the first helicoid 21 away from the surface of rotary shaft 1；Clutch actuator 3 includes and first
The barrel of second spiral-tube of spiral-tube cooperation, the second spiral-tube forms the second helicoid 31 towards the surface of the first spiral-tube.
Specifically, above-mentioned intelligent door lock further includes being set between the first spiral-tube and the second spiral-tube and for the second spiral shell
Cylinder is revolved relative to the first spiral-tube along the guiding mechanism of axial action.Guiding is set between the first spiral-tube and the second spiral-tube
Mechanism can make the second spiral-tube more stable along its axial movement.
Specifically, above-mentioned guiding mechanism includes being fixed on the positioning and guiding set 4 being arranged in the first spiral-tube and coaxially
And it is fixed in the second spiral-tube and protrudes into the guide post 5 that positioning and guiding set 4 covers 4 clearance fits with positioning and guiding, positioning is led
It is equipped with to 4 inside of set and axially extends guide groove, the sliding block being slidably matched with guide groove is equipped on the outside of guide post 5.Pass through positioning
The cooperation of guide sleeve 4 and guide post 5 carries out the guiding of axial action to the second spiral-tube, and stability is more preferable, and structure is simple, easily
In manufacture.
Specifically, the intelligent door lock in the present embodiment is bottom unlocking, is illustrated with the operating position of intelligent door lock, the first spiral shell
Cylinder and the second spiral-tube threaded engagement are revolved, when the first spiral-tube opposite under rotation of second spiral-tube in the first spiral-tube does axial direction
Movement, that is, the second spiral-tube is acted relative to the first spiral-tube in vertical direction, and is worked as the first spiral-tube and rotated in the forward direction, and second
When spiral-tube moves upwards the highest point for reaching movement travel under the action of the first spiral-tube, removes and the first spiral-tube is applied
Artificial action power, the second spiral-tube can move down under the effect of gravity, i.e., the gravity of the second spiral-tube is to
Two spiral-tubes generate pressure, and due to the first spiral-tube and the second spiral-tube threaded engagement, then the first spiral-tube is in the second spiral-tube
Under the action of reversely rotate, and the second spiral-tube moves down, that is, the second spiral-tube can return to original position by self gravity.
For the reset stability for guaranteeing the second spiral-tube, elasticity can be equipped between the first spiral-tube and the second spiral-tube
Reset assembly guarantees that the second spiral-tube can return to original position faster.
Wherein, elastic reset component includes: the spring being set between guide post 5 and positioning and guiding set 4, one end of spring
It is connected to positioning and guiding and covers 4 inner bottom surfaces, the guide post 5 that the other end is connected to protrudes into the end face of one end in positioning and guiding set 4.With
For spring as return unit, structure is simple, easy to set up.
As shown in Figure 4 and Figure 5, wherein the intelligence in Fig. 4 and Fig. 5 to be provided in viewing the present embodiment under different perspectives
The structural schematic diagram of door lock, intelligent door lock further include for the fixed plate 7 fixed with door-plate, and fixed plate 7 is located at the back of helical structure 2
The side of luxuriant clutch actuator 3, fixed plate 7 are equipped with through-hole, and one end that rotary shaft 1 is equipped with keyhole passes through through-hole and and through-hole
It is rotatably assorted.Fixed plate 7 and door-plate are fixedly installed, and rotary shaft 1 and helical structure 2 are installed on door-plate by fixed plate 7, just
In installation.
In above-mentioned intelligent door lock, fixed plate 7 is set to away from the side of helical structure 2 and connect with rotary shaft 1 and for limiting
The position-limit mechanism of the rotation angle of rotary shaft 1.Wherein, position-limit mechanism includes the snap ring for being sheathed on 1 end of rotary shaft, snap ring periphery
Side is equipped with protruding block, is installed on fixed plate 7 and is located at snap ring side limited block.By being set between fixed plate 7 and rotary shaft 1
Position-limit mechanism is set, the rotation angle of rotary shaft 1 can be limited, so as to limit clutch drive block along the axial direction of rotary shaft 1
The stroke distances of movement, that is, the lifting height that clutch drive block moves upwards, and two limiting blocks are set in fixed plate 7
Block, two limited blocks are respectively positioned on snap ring side, and protrusion is located between two limited blocks fastly, can limit by adjusting two
Relative position between the block of position, adjusts the rotation angle of rotary shaft 1, to adjust the lifting height of clutch drive block.
Specifically, clutch actuator 3 connects away from the clutch that the side of helical structure 2 is equipped with for connecting with clutch
Contact block 6.
Specifically, the material of helical structure 2 and clutch actuator 3 includes: PA, POM, PC, PP or ABS.Preferably, spiral shell
The material for revolving structure 2 and clutch actuator 3 includes PA or POM, wherein the self-lubrication of PA and POM is preferable, can be conducive to
The abrasion between helical structure 2 and clutch actuator 3 is reduced, and easy to process, it is cheap.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of intelligent door lock characterized by comprising for the driving of the clutch operating to be connect and driven with clutch
Mechanism, the driving mechanism include:
Rotary shaft, the end face of the first end of the rotary shaft is equipped with the keyhole extended along the axial line of the rotary shaft, described
The second end of rotary shaft is equipped with helical structure, and the helical structure has away from the side of the first end of the rotary shaft to deviating from
The first helicoid that the direction of the rotary shaft first end extends, the spiral center axis of first helicoid and the rotary shaft
Axial line be overlapped；
It can be moved away from the side of the rotary shaft and along the extending direction of the axial line of the rotary shaft positioned at the helical structure
The clutch actuator of work, the clutch actuator has towards the side of the helical structure matches with first helicoid
The second helicoid closed, and the clutch actuator is connect away from the side of second helicoid with the clutch.
2. intelligent door lock according to claim 1, which is characterized in that the helical structure includes being set to the rotary shaft
Second end and the first spiral-tube being arranged with the concentric rotation axis, the barrel of first spiral-tube is away from the rotary shaft
Surface forms first helicoid；
The clutch actuator includes the second spiral-tube with first spiral-tube cooperation, the barrel of second spiral-tube
Second helicoid is formed towards the surface of first spiral-tube.
3. intelligent door lock according to claim 2, which is characterized in that further include being set to first spiral-tube and described the
Between two spiral-tubes and it is used for second spiral-tube relative to first spiral-tube along the guiding mechanism of axial action.
4. intelligent door lock according to claim 3, which is characterized in that the guiding mechanism includes being fixed on first spiral shell
The positioning and guiding being arranged in rotation cylinder and coaxially is covered and is fixed in second spiral-tube and protrudes into the positioning and guiding
The guide post of set and positioning and guiding set clearance fit, positioning and guiding set inside, which is equipped with, axially extends guide groove, institute
State the sliding block for being equipped on the outside of guide post and being slidably matched with the guide groove.
5. intelligent door lock according to claim 4, which is characterized in that first spiral-tube and second spiral-tube it
Between be equipped with elastic reset component.
6. intelligent door lock according to claim 5, which is characterized in that the elastic reset component include: be set to it is described
Spring between guide post and positioning and guiding set, one end of the spring are connected to the positioning and guiding set inner bottom surface,
The guide post that the other end is connected to protrudes into the end face of one end in the positioning and guiding set.
7. intelligent door lock according to claim 1, which is characterized in that further include for the fixed plate fixed with door-plate, institute
It states fixed plate and is located at the side that the helical structure deviates from the clutch actuator, the fixed plate is equipped with through-hole, the rotation
One end that shaft is equipped with keyhole passes through the through-hole and is rotatably assorted with the through-hole.
8. intelligent door lock according to claim 7, which is characterized in that the fixed plate deviates from the side of the helical structure
Set on the position-limit mechanism with the rotation axis connection and the rotation angle for limiting the rotary shaft.
9. intelligent door lock according to claim 8, which is characterized in that the position-limit mechanism includes being sheathed on the rotary shaft
The snap ring of end, the snap ring peripheral side are equipped with protruding block, are installed on the fixed plate and are located at snap ring side limiting block
Block.
10. intelligent door lock according to claim 1, which is characterized in that the clutch actuator deviates from the spiral knot
The side of structure is equipped with the clutch contact block for connecting with the clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910079823.0A CN109555362A (en) | 2019-01-28 | 2019-01-28 | Intelligent door lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910079823.0A CN109555362A (en) | 2019-01-28 | 2019-01-28 | Intelligent door lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109555362A true CN109555362A (en) | 2019-04-02 |
Family
ID=65873946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910079823.0A Pending CN109555362A (en) | 2019-01-28 | 2019-01-28 | Intelligent door lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109555362A (en) |
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| CN102979376A (en) * | 2012-10-18 | 2013-03-20 | 孙新利 | Improved structure for driving device of electric lock |
| CN104790728A (en) * | 2015-05-05 | 2015-07-22 | 中国船舶重工集团公司第七一八研究所 | Spiral type reverse clutch assembly |
| CN205331268U (en) * | 2016-01-12 | 2016-06-22 | 许红英 | Freewheel clutch clutching mechanism and clutch |
| CN108798236A (en) * | 2017-05-04 | 2018-11-13 | 台湾福兴工业股份有限公司 | Electronic lock and clutch mechanism thereof |
| CN108798238A (en) * | 2018-01-09 | 2018-11-13 | 中山市汇宝制锁有限公司 | A kind of new door lock |
| CN108843144A (en) * | 2018-06-08 | 2018-11-20 | 深圳市正大盈拓识别技术有限公司 | A kind of lock core device |
| CN208184490U (en) * | 2018-04-20 | 2018-12-04 | 钟永聪 | A kind of world hinge of automatic rotary |
| CN209653603U (en) * | 2019-01-28 | 2019-11-19 | 珠海格力电器股份有限公司 | A kind of intelligent door lock |
-
2019
- 2019-01-28 CN CN201910079823.0A patent/CN109555362A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119538A (en) * | 1998-10-30 | 2000-09-19 | Chang; Chung-I | Driving pull rod assembly of a central control lock for automobiles |
| CN2869223Y (en) * | 2006-03-01 | 2007-02-14 | 赖光阔 | Lock bolt structure |
| CN201016361Y (en) * | 2007-02-02 | 2008-02-06 | 富士康(昆山)电脑接插件有限公司 | Gemel structure |
| CN102979376A (en) * | 2012-10-18 | 2013-03-20 | 孙新利 | Improved structure for driving device of electric lock |
| CN104790728A (en) * | 2015-05-05 | 2015-07-22 | 中国船舶重工集团公司第七一八研究所 | Spiral type reverse clutch assembly |
| CN205331268U (en) * | 2016-01-12 | 2016-06-22 | 许红英 | Freewheel clutch clutching mechanism and clutch |
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| CN108798238A (en) * | 2018-01-09 | 2018-11-13 | 中山市汇宝制锁有限公司 | A kind of new door lock |
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| CN209653603U (en) * | 2019-01-28 | 2019-11-19 | 珠海格力电器股份有限公司 | A kind of intelligent door lock |
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