CN113338710B

CN113338710B - Security device for smart home

Info

Publication number: CN113338710B
Application number: CN202110451517.2A
Authority: CN
Inventors: 任新宇; 关惠元; 徐伟; 张耀引; 刘传兵; 吴振韩; 高锐涛
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-07-08
Anticipated expiration: 2041-04-26
Also published as: CN113338710A

Abstract

The invention discloses a security device for intelligent home, which belongs to the field of home security, and comprises a door leaf, a door frame and an electromagnetic lock, wherein the electromagnetic lock comprises a lock tongue, a lock hole and a power supply unit; one end of the lock tongue is provided with a locking groove, a first inserted bar used for being inserted into the locking groove is installed in the door frame, and an iron block, a first spring and an electromagnet are sequentially arranged on one side, back to the locking hole, of the first inserted bar; the power supply unit comprises a power supply, a coil and a wire electrically connected with the electromagnet, an electric switch is arranged between the power supply and the wire, a door lock control panel is installed on the front surface of the door leaf, an entrance guard identification device and an electrifying button are arranged on the door lock control panel, and the electric switch is electrically connected with the output end of the entrance guard identification device. The invention can greatly reduce the power consumption, can keep the locking effect when the house power supply system is powered off, and has better anti-theft function; the trouble caused by the accidental closing of the door leaf can be effectively avoided.

Description

Security device for smart home

Technical Field

The invention relates to the field of home security, in particular to a security device for smart home.

Background

The intelligent home is characterized in that a home is used as a platform, facilities related to home life are integrated by utilizing a comprehensive wiring technology, a network communication technology, a safety precaution technology, an automatic control technology and an audio and video technology, an efficient management system of home facilities and family schedule affairs is constructed, home safety, convenience, comfortableness and artistry are improved, and an environment-friendly and energy-saving living environment is realized.

The door and window is a main passage for thieves to steal in real time at home, and the traditional door leaf is locked only through a simple door lock, so that the anti-theft effect is poor. The design of an electromagnetic lock (or called a magnetic lock) is the same as that of an electromagnet, the electromagnetic principle is utilized, and when current passes through a silicon steel sheet, the electromagnetic lock can generate strong suction to tightly suck an adsorption iron plate to achieve the effect of locking a door. As long as the small current electromagnetic lock can generate the magnetic force, the access control system controlling the power supply of the electromagnetic lock is powered off after the identification is correct, and the electromagnetic lock can be opened after losing the suction force. When the door leaf is closed, the circuit connected with the silicon steel sheet needs to be kept continuously electrified, and the power consumption is high; and once the house power supply system is powered off, the electromagnetic lock loses the locking effect. In addition, for the electromagnetic lock requiring a door magnetic card, if the door is not taken out and the door is accidentally closed, the door cannot be easily opened, which may cause trouble to the user.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the technical problem of providing a security device for smart home, which can save electricity, improve the anti-theft function and prevent a door leaf from being accidentally closed, so as to solve the problems in the prior art.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a security device for smart home comprises a door leaf and a door frame, wherein one side of the door leaf is hinged with the corresponding side of the door frame, and an electromagnetic lock is arranged between one side of the door leaf, which is back to the hinged side, and the door frame; the electromagnetic lock comprises a lock tongue which is transversely movably installed inside a door leaf, a lock hole which is formed in a door frame and is used for inserting the lock tongue, and a power supply unit used for supplying power, wherein an armature is fixed at one end of the lock tongue, which is back to the lock hole, a coil is sleeved outside the armature, a first installation cavity used for installing the lock tongue and related components is arranged in the door leaf, an ear plate is fixed on the lock tongue, and one side of the ear plate, which is back to the lock hole, is connected with a second spring sleeved on the lock tongue; one end of the lock tongue, which is inserted into the lock hole, is provided with a lock groove, a first insert rod which is used for being inserted into the lock groove is installed in the door frame, one end of the first insert rod, which is back to the lock hole, is connected with an iron block, one side of the iron block, which is back to the first insert rod, is connected with a first spring, and one side of the first spring, which is back to the first insert rod, is provided with an electromagnet; the power supply unit comprises a power supply, a first lead electrically connected with the coil and a second lead electrically connected with the electromagnet, an electric switch is arranged between the power supply and the first lead and between the power supply and the second lead, a door lock control panel is installed on the front surface of the door leaf, an entrance guard identification device (such as a door card induction area, a password input keyboard and the like) and an electrifying button used for communicating the power supply with the entrance guard identification device are arranged on the door lock control panel, and the electric switch is electrically connected with the output end of the entrance guard identification device; one side of the door leaf back to the hinged side is provided with a second inserted bar which is longitudinally arranged and can be inserted into the locking groove, and a strip-shaped groove for the second inserted bar to move is formed in the door leaf; the door leaf is articulated the upper end of one side of side dorsad and has been seted up the second installation cavity, be equipped with lateral sliding connection's carrier board in the second installation cavity, connect the dwang on the carrier board through first bearing to and connect in the carrier board towards the third spring of the articulated side of door leaf one side, the equal level of dwang and third spring sets up first bearing is connected in the dwang towards the articulated side of door leaf one side, the dwang is equipped with the convex arcwall face to the outside dorsad in one side of third spring one end, be equipped with link gear between carrier board and the second inserted bar. After the door leaf is opened, the spring bolt retracts into the interior of the door leaf, the second inserted bar is inserted into the locking groove at the moment, the coil is powered off, the spring bolt can be prevented from extending outwards under the elastic action of the second spring, and therefore the damage of collision, scratch and the like caused by the fact that the spring bolt extends out can be avoided.

Furthermore, one side of the door leaf back to the hinged side is embedded with a first conducting strip electrically connected with the first conducting wire, the door frame is embedded with a second conducting strip aligned with the first conducting strip, and the second conducting strip is electrically connected with the second conducting wire. After the door leaf is closed, the first conducting strip and the second conducting strip are in laminating contact and can be communicated with the first conducting wire and the second conducting wire, the electric switch is closed after the door control identification device identifies the door control identification device correctly, the coil and the electromagnet can be electrified simultaneously, and power supply is convenient.

Furthermore, the second inserted bar is vertically arranged, the linkage mechanism comprises a transverse rack horizontally fixed at the bottom of the carrier plate, a lifting block fixed at the upper end of the second inserted bar, a longitudinal rack vertically fixed on one side of the lifting block, and a gear assembly meshed with the transverse rack and the longitudinal rack, the gear assembly comprises a rotating shaft, a second gear and a first gear fixedly sleeved on the rotating shaft, two ends of the rotating shaft are rotatably connected with the door leaf through second bearings, the transverse rack is meshed with the first gear and is positioned on the upper side of the first gear, and the longitudinal rack is meshed with the second gear. When the door leaf is opened, inside the spring bolt withdrawal door leaf, later the door leaf is opened, under the spring action of third spring, promote the carrier board, drive the dwang and outwards stretch out, and simultaneously, horizontal rack removes along with the carrier board, can drive first gear and take place to rotate, and the axis of rotation rotates along with it, drives second gear revolve, and the vertical rack of second gear drive moves down, and the elevator descends thereupon to drive second inserted bar downstream, just insert the locking inslot, effectively realize the linkage of carrier board and second inserted bar.

Furthermore, a door gap baffle plate for shielding a door gap is fixed on the side surface of the door frame facing the door leaf. The door crack baffle can shelter from the gap between the door leaf and the door frame, thereby preventing a thief from damaging the lock tongue from the door crack.

Furthermore, an electrifying indicator lamp is arranged on the door lock control panel. After the power-on button is pressed, the power supply powers on the entrance guard identification device, and meanwhile, the power-on indicator lamp is turned on to indicate that the power supply can normally supply power; if the power-on indicator lamp is not on after the power-on button is pressed, the power supply can not supply power normally.

Further, a door handle is arranged on the door lock control panel. The door leaf can be conveniently closed or opened through the door handle.

3. Advantageous effects

(1) The invention is provided with an armature fixedly connected with a spring bolt, and the spring bolt is sleeved with a second spring through the arrangement of a coil and a power supply unit, and when the coil is powered off, the spring bolt extends outwards under the action of the elasticity of the second spring; when the coil is electrified, the lock tongue retracts into the door leaf under the dragging of the armature, and when the door leaf is in a closed state, namely the electromagnetic lock is in a locked state, the electromagnetic lock is in a power-off state, so that the power consumption can be greatly reduced; even if the house power supply system has power failure, the locking effect of the electromagnetic lock can be kept, and the anti-theft function of the electromagnetic lock can be guaranteed.

(2) According to the electromagnetic lock, the locking groove is formed in the lock tongue, the locking structure comprising the first inserting rod, the first spring, the iron block and the electromagnet is arranged in the door frame, when the lock tongue is inserted into the lock hole, the first inserting rod can be inserted into the lock hole, the lock tongue is locked, the lock tongue can be prevented from being separated from the lock hole under the action of external force, the locking effect of the electromagnetic lock is guaranteed, and the anti-theft capacity of the electromagnetic lock can be improved.

(3) The electromagnetic lock is ingenious in structural design, the lock tongue or the rotating rod can extend out of the outer side of the door leaf after the door leaf is opened, and for the electromagnetic lock needing a door magnetic card, when a user temporarily goes out one time and does not intend to close the door, if wind drives a related trend of the door leaf, the lock tongue or the rotating rod can abut against a door frame due to the fact that the lock tongue or the rotating rod extends out of the outer side of the door leaf, so that the closing of the door leaf can be effectively prevented, and further, the trouble caused by the accidental closing of the door leaf can be effectively avoided.

In conclusion, the invention can greatly reduce the power consumption, can still keep the locking effect when the house power supply system is powered off, and has better anti-theft function; the trouble caused by the accidental closing of the door leaf can be effectively avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present invention taken along a vertical center plane in example 1;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;

FIG. 3 is a cross-sectional view of the present invention taken along a vertical center plane in example 2;

FIG. 4 is an enlarged view of the structure of the area B in FIG. 3;

FIG. 5 is a top view of the gear assembly of the present invention in embodiment 2;

fig. 6 is a top view of the rotating lever 26;

FIG. 7 is a schematic front view of the present invention;

fig. 8 is an enlarged view of the structure of the region C in fig. 7.

Reference numerals are as follows: 1. an armature; 2. a first mounting cavity; 3. a first conductive line; 4. a power source; 5. an electric switch; 6. a first conductive sheet; 7. a second conductive sheet; 8. an electromagnet; 9. a first spring; 10. a door leaf; 11. an iron block; 12. a first plunger; 13. a locking groove; 14. a latch bolt; 15. an ear plate; 16. a second spring; 17. a coil; 18. a second plunger; 19. a second gear; 20. a door frame; 21. a first gear; 22. a transverse rack; 23. a carrier plate; 24. a third spring; 25. a first bearing; 26. rotating the rod; 27. a second mounting cavity; 28. a longitudinal rack; 29. a lifting block; 30. a rotating shaft; 31. a second bearing; 32. a door seam baffle; 33. a power-on button; 34. a power-on indicator light; 35. a door handle; 36. an arc-shaped surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of an inlet feature "on" or "under" a second feature may include the inlet and the second feature being in direct contact, and may also include the recitation that the inlet and the second feature are not in direct contact, but are in contact via another feature therebetween. Also, the terms "over," "above," and "above" the second feature include the inlet feature being directly above and obliquely above the second feature, or simply indicating that the inlet feature is higher in level than the second feature. The terms "under", "below" and "beneath" of an inlet feature encompass the inlet feature being directly under and obliquely below the second feature, or simply meaning that the inlet feature is less level than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

As shown in fig. 1, the security device for smart home comprises a door leaf 10 and a door frame 20, wherein one side of the door leaf 10 is hinged to a corresponding side of the door frame 20, and an electromagnetic lock is arranged between one side of the door leaf 10, which is opposite to the hinged side, and the door frame 20; as shown in fig. 2, the electromagnetic lock includes a bolt 14 installed inside a door leaf 10 in a lateral moving manner, a lock hole opened on a door frame 20 for the bolt 14 to be inserted into, and a power supply unit for supplying power, an armature 1 is fixed at one end of the bolt 14 opposite to the lock hole, a coil 17 is sleeved outside the armature 1, a first installation cavity 2 for installing the bolt 14 and related components is arranged in the door leaf 10, an ear plate 15 is fixed on the bolt 14, a second spring 16 sleeved on the bolt 14 is connected to one side of the ear plate 15 opposite to the lock hole, and the elastic action of the second spring 16 generates thrust to the ear plate 15;

as shown in fig. 2, one end of the lock tongue 14 inserted into the lock hole is provided with a lock groove 13, a first insert rod 12 inserted into the lock groove 13 is installed in the door frame 20, one side of the lower end of the first insert rod 12 facing the door leaf 10 is an inclined surface, one end of the first insert rod 12 facing away from the lock hole is connected with an iron block 11, one side of the iron block 11 facing away from the first insert rod 12 is connected with a first spring 9, the elastic action of the first spring 9 generates a thrust force on the first insert rod 12, and one side of the first spring 9 facing away from the first insert rod 12 is provided with an electromagnet 8;

as shown in fig. 2, the power supply unit includes a power source 4, a first conductive wire 3 electrically connected to the coil 17, and a second conductive wire electrically connected to the electromagnet 8, an electric switch 5 is disposed between the power source 4 and the first and second conductive wires 3, a first conductive sheet 6 electrically connected to the first conductive wire 3 is embedded in one side of the door leaf 10 facing away from the hinge side, a second conductive sheet 7 aligned to the first conductive sheet 6 is embedded in the door frame 20, and the second conductive sheet 7 is electrically connected to the second conductive wire. After the door leaf 10 is closed, the first conducting strip 6 is in laminating contact with the second conducting strip 7 and can be communicated with the first conducting wire 3 and the second conducting wire, and after the door control identification device identifies correctly, the electric switch 5 is closed, so that the coil 17 and the electromagnet 8 can be electrified simultaneously, and power supply is convenient;

as shown in fig. 7 and 8, install door lock control panel on the front of door leaf 10, be equipped with entrance guard's identification device (for example door card induction zone, password input keyboard etc.) on the door lock control panel to and the circular telegram button 33 that is used for intercommunication power 4 and entrance guard's identification device, circular telegram button 33 is connected with power 4 and entrance guard's identification device electricity, electric switch 5 is connected with entrance guard's identification device's output electricity. A door gap blocking plate 32 for blocking a door gap is fixed to a side surface of the door frame 20 facing the door 10. The door seam blocking plate 32 may block a gap between the door leaf 10 and the door frame 20, thereby preventing a thief from damaging the locking tongue 14 through the door seam. And the door lock control panel is provided with an electrifying indicator lamp 34. After the power-on button 33 is pressed, the power supply 4 powers on the entrance guard identification device, and meanwhile, the power-on indicator lamp 34 is turned on to show that the power supply 4 can normally supply power; when the power-on button 33 is pressed and the power-on indicator lamp 34 is not turned on, it means that the power source 4 cannot supply power normally. The door lock control panel is provided with a door handle 35. The door 10 can be easily closed or opened by the door handle 35.

The specific action principle of the security device for the smart home is as follows:

after the door leaf 10 is closed, the electromagnetic lock is in a power-off state, the lug plate 15 is under the elastic action of the second spring 16, and the bolt 14 is driven to be inserted into the lock hole of the door frame 20, so that the electromagnetic lock is locked; simultaneously, 8 outage of electro-magnet, the magnetic attraction that iron plate 11 received disappears, under the elastic force effect of first spring 9, promotes first inserted bar 12 and inserts in the locking groove 13, realizes the locking to spring bolt 14, can prevent that spring bolt 14 from breaking away from the lockhole under the exogenic action, has ensured the locking effect of electromagnetic lock to can promote the theftproof ability of electromagnetic lock. And, it is in the outage state when the electromagnetic lock locks, need not keep lasting circular telegram, is favorable to practicing thrift the electric quantity power consumption, even the power failure of house power supply system, the electromagnetic lock also can not lose the locking effect.

When the door is opened, the power button 33 needs to be pressed down firstly, so that the power supply 4 powers the entrance guard identification device, then the password is sensed or input through the door magnetic card, after the entrance guard identification device is correctly identified, the power switch 5 is connected and closed, so that the power supply 4 supplies power to the first lead 3 and the second lead, namely the coil 17 and the electromagnet 8 are powered on, the electromagnet 8 is powered on, the magnetic attraction effect on the iron block 11 is generated, the iron block 11 can drive the first inserted rod 12 to move upwards, the first inserted rod 12 is separated from the locking groove 13, and the locking of the lock tongue 14 is released; and the coil 17 is electrified, and according to the principle of electricity generation, a magnetic field can be generated to drive the armature 1 to move, and the bolt 14 can be driven to retract into the door leaf 10, so that the door leaf 10 can be opened. After the door leaf 10 is opened, the electromagnetic lock is automatically powered off, and the bolt 14 is pushed to extend outwards under the action of the elastic force of the second spring 16. For the electromagnetic lock requiring a magnetic door card, when a user temporarily goes out for one trip and does not intend to close the door, if wind drives the trend related to the door leaf 10, the bolt 14 will collide with the door frame 20 because the bolt 14 extends to the outside of the door leaf 10, so as to effectively block the closing of the door leaf 10, and further effectively avoid the trouble caused by the accidental closing of the door leaf 10.

Example 2

The present embodiment is different from embodiment 1 in that:

in this embodiment, as shown in fig. 3 and 4, a second inserting rod 18 which is longitudinally arranged and can be inserted into the locking groove 13 is arranged on one side of the door leaf 10 opposite to the hinged side, and a strip-shaped groove for moving the second inserting rod 18 is formed in the door leaf 10; a second mounting cavity 27 is formed in the upper end of one side, facing away from the hinged side, of the door leaf 10, a carrier plate 23 connected in a transverse sliding manner is arranged in the second mounting cavity 27, a rotating rod 26 connected to the carrier plate 23 through a first bearing 25, and a third spring 24 connected to one side, facing the hinged side of the door leaf 10, of the carrier plate 23 are connected, the rotating rod 26 and the third spring 24 are both horizontally arranged, the third spring 24 generates thrust on the carrier plate 23 under the elastic action of the third spring, the first bearing 25 is connected to one side, facing away from the hinged side of the door leaf 10, of the rotating rod 26, as shown in fig. 6, an arc-shaped surface 36 protruding outwards is arranged on one side, facing away from one end of the third spring 24, of the rotating rod 26, and a linkage mechanism is arranged between the carrier plate 23 and the second insertion rod 18. After the door leaf 10 is opened, the bolt 14 retracts into the door leaf 10, the second inserted link 18 is inserted into the locking groove 13, the coil 17 is powered off, the bolt 14 can be prevented from extending outwards under the action of the elastic force of the second spring 16, and therefore damages such as collision and scratching caused by the fact that the bolt 14 extends can be avoided. The second plunger 18 is vertically disposed, and as shown in fig. 4, the link mechanism includes a transverse rack 22 horizontally fixed at the bottom of the carrier plate 23, a lifting block 29 fixed at the upper end of the second plunger 18, a longitudinal rack 28 vertically fixed at one side of the lifting block 29, and a gear assembly engaged with the transverse rack 22 and the longitudinal rack 28. As shown in fig. 4 and 5, the gear assembly includes a rotating shaft 30, and a second gear 19 and a first gear 21 fixedly sleeved on the rotating shaft 30, both ends of the rotating shaft 30 are rotatably connected with the door leaf 10 through a second bearing 31, the diameter of the first gear 21 is larger than that of the second gear 19, the transverse rack 22 is meshingly located on the upper side of the first gear 21, and the longitudinal rack 28 is meshingly located on the left side of the second gear 19. When the door leaf 10 is opened, the bolt 14 retracts into the door leaf 10, then the door leaf 10 is opened, under the elastic action of the third spring 24, the carrier plate 23 is pushed, the rotating rod 26 is driven to extend outwards, meanwhile, the transverse rack 22 moves along with the carrier plate 23, the first gear 21 can be driven to rotate, the rotating shaft 30 rotates along with the rotating shaft, the second gear 19 is driven to rotate, the second gear 19 drives the longitudinal rack 28 to move downwards, the lifting block 29 descends along with the rack, the second inserted link 18 is driven to move downwards, the second inserted link is just inserted into the locking groove 13, and the linkage of the carrier plate 23 and the second inserted link 18 is effectively realized.

The rest was the same as in example 1.

when the door is closed, the rotating rod 26 is rotated to enable the arc-shaped surface 36 to face the outside of the door, then the door leaf 10 is closed, the arc-shaped surface 36 of the rotating rod 26 is contacted with the door frame 20, in the process of closing the door, the rotating rod 26 can be retracted into the door leaf 10 and can push the carrier plate 23 to move towards the left, the third spring 24 is compressed, the transverse rack 22 moves towards the left along with the rotation of the transverse rack 22 to drive the first gear 21 to rotate anticlockwise, the rotating shaft 30 and the second gear 19 rotate anticlockwise along with the rotation of the longitudinal rack 28 to move upwards, the lifting block 29 and the second inserting rod 18 move upwards along with the rotation of the transverse rack 22, the second inserting rod 18 is separated from the locking groove 13, the locking of the lock tongue 14 can be released, the lock tongue 14 can be pushed to move towards the right under the elastic force of the second spring 16 and is inserted into the locking hole of the door frame 20, and the locking of the electromagnetic lock is realized; simultaneously, iron plate 11 does not receive magnetic attraction, under the elastic force effect of first spring 9, promotes first inserted bar 12 and inserts locking groove 13 in, realizes the locking to spring bolt 14, can prevent that spring bolt 14 from breaking away from the lockhole under the exogenic action, has ensured the locking effect of electromagnetic lock to can promote the theftproof ability of electromagnetic lock. And, it is in the outage state when the electromagnetic lock locks, need not keep lasting circular telegram, is favorable to practicing thrift the electric quantity power consumption, even the power failure of house power supply system, the electromagnetic lock also can not lose the locking effect.

When the door is opened, the power button 33 needs to be pressed down firstly, so that the power supply 4 powers the entrance guard identification device, then the password is sensed or input through the door magnetic card, after the entrance guard identification device is correctly identified, the power switch 5 is connected and closed, so that the power supply 4 supplies power to the first lead 3 and the second lead, namely the coil 17 and the electromagnet 8 are powered on, the electromagnet 8 is powered on, the magnetic attraction effect on the iron block 11 is generated, the iron block 11 can drive the first inserted rod 12 to move upwards, the first inserted rod 12 is separated from the locking groove 13, and the locking of the lock tongue 14 is released; and the coil 17 is electrified, and according to the principle of electricity generation, a magnetic field can be generated to drive the armature 1 to move, and the bolt 14 can be driven to retract into the door leaf 10, so that the door leaf 10 can be opened. After the door leaf 10 is opened, under the elastic force action of the third spring 24, the carrier plate 23 is pushed, the rotating rod 26 is driven to extend outwards, meanwhile, the transverse rack 22 moves along with the carrier plate 23, the first gear 21 can be driven to rotate, the rotating shaft 30 rotates along with the rotating shaft, the second gear 19 is driven to rotate, the second gear 19 drives the longitudinal rack 28 to move downwards, the lifting block 29 descends along with the transverse rack, the second inserting rod 18 is driven to move downwards, the electromagnetic lock is just inserted into the locking groove 13, the electromagnetic lock is automatically powered off again, the bolt 14 can be prevented from extending outwards under the elastic force action of the second spring 16, and therefore damages such as collision and scratching caused by the fact that the bolt 14 extends out can be avoided. To the electromagnetic lock that needs the door magnetic card, when the user temporarily goes out one trip and does not intend to close the door, rotate dwang 26 to its arcwall face 36 towards the door inboard, if wind drives the trend that door leaf 10 is relevant, because dwang 26 stretches out to the door leaf 10 outside, dwang 26 can contradict door frame 20 to can effectively obstruct closing of door leaf 10, and then can effectively avoid the unexpected vexation of closing and bringing of door leaf 10.

According to the invention, the power consumption can be greatly reduced, the locking effect can be still kept when the house power supply system is powered off, and the anti-theft function is good; and the trouble caused by the accidental closing of the door leaf can be effectively avoided.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A security device for smart home comprises a door leaf (10) and a door frame (20), wherein one side of the door leaf (10) is hinged with the corresponding side of the door frame (20), and an electromagnetic lock is arranged between one side of the door leaf (10), which is back to the hinged side, and the door frame (20); the electromagnetic lock is characterized by comprising a lock tongue (14) which is transversely movably installed inside a door leaf (10), a lock hole which is formed in a door frame (20) and into which the lock tongue (14) is inserted, and a power supply unit for supplying power, wherein an armature (1) is fixed at one end of the lock tongue (14) opposite to the lock hole, a coil (17) is sleeved outside the armature (1), an ear plate (15) is fixed on the lock tongue (14), and a second spring (16) sleeved on the lock tongue (14) is connected to one side of the ear plate (15) opposite to the lock hole; one end, inserted into the lock hole, of the lock tongue (14) is provided with a lock groove (13), a first inserted bar (12) used for being inserted into the lock groove (13) is installed in the door frame (20), one end, opposite to the lock hole, of the first inserted bar (12) is connected with an iron block (11), one side, opposite to the first inserted bar (12), of the iron block (11) is connected with a first spring (9), and one side, opposite to the first inserted bar (12), of the first spring (9) is provided with an electromagnet (8); the power supply unit comprises a power supply (4), a first wire (3) electrically connected with a coil (17) and a second wire electrically connected with an electromagnet (8), an electric switch (5) is arranged between the power supply (4) and the first wire (3) and between the power supply and the second wire, a door lock control panel is installed on the front face of the door leaf (10), a door access identification device and an electrifying button (33) used for communicating the power supply (4) with the door access identification device are arranged on the door lock control panel, and the electric switch (5) is electrically connected with the output end of the door access identification device;

one side of the door leaf (10) back to the hinged side is provided with a second inserted bar (18) which is longitudinally arranged and can be inserted into the locking groove (13), and a strip-shaped groove for the second inserted bar (18) to move is formed in the door leaf (10); second installation cavity (27) have been seted up to the upper end of one side of articulated side dorsad in door leaf (10), be equipped with lateral sliding connection's carrier board (23) in second installation cavity (27), connect dwang (26) on carrier board (23) through first bearing (25) to and connect in carrier board (23) towards third spring (24) of door leaf (10) articulated side one side, dwang (26) and the equal level setting of third spring (24), first bearing (25) are connected in dwang (26) towards the one side of door leaf (10) articulated side, one side of dwang (26) third spring (24) one end dorsad is equipped with outside convex arcwall face (36), be equipped with link gear between carrier board (23) and second inserted bar (18).

2. The security device for the smart home according to claim 1, wherein a first conductive sheet (6) electrically connected with the first wire (3) is embedded in one side of the door leaf (10) facing away from the hinged side, a second conductive sheet (7) aligned with the first conductive sheet (6) is embedded in the door frame (20), and the second conductive sheet (7) is electrically connected with the second conductive wire.

3. The security device for smart home according to claim 1, the second inserted bar (18) is vertically arranged, the linkage mechanism comprises a transverse rack (22) horizontally fixed at the bottom of the carrier plate (23), a lifting block (29) fixed at the upper end of the second inserted bar (18), and a longitudinal rack (28) vertically fixed at one side of the lifting block (29), and a gear assembly engaged with the transverse rack (22) and the longitudinal rack (28), the gear assembly including a rotating shaft (30) and a second gear (19) and a first gear (21) fixedly sleeved on the rotating shaft (30), both ends of the rotating shaft (30) are rotatably connected with the door leaf (10) through a second bearing (31), the transverse rack (22) is positioned at the upper side of the first gear (21) in a meshed mode, the longitudinal rack (28) is located on the left side of the second gear (19) in a meshing manner.

4. The security device for smart homes according to claim 1, wherein a door gap baffle (32) for shielding a door gap is fixed on a side of the door frame (20) facing the door leaf (10).

5. The security device for smart homes according to claim 1, wherein a power-on indicator lamp (34) is provided on the door lock control panel.

6. The security device for smart home as claimed in claim 1, wherein the door lock control panel is provided with a door handle (35).