CN111101766A

CN111101766A - Electromagnetic ejection intelligent lock

Info

Publication number: CN111101766A
Application number: CN201911326658.0A
Authority: CN
Inventors: 王文瑶; 关继斌; 李正冬; 郭彤辉
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-05-05

Abstract

The invention discloses an electromagnetic ejection intelligent lock, which comprises a lock shell and a locking assembly, wherein the locking assembly comprises: the locking bolt is movably arranged between the first magnetic part and the second magnetic part and can be selectively attracted with one of the first magnetic part and the second magnetic part; the lock shell is internally provided with a control part which is used for controlling the moving direction of the bolt by controlling the attraction of the bolt and the first magnetic attraction part or the second magnetic attraction part; the lock tongue moves to a locking position which is sucked with the first magnetic suction part so as to enable the locking component to be in a locking state; the lock tongue moves to an opening position which is attracted with the second magnetic suction part so as to enable the locking component to be in an opening state. According to the electromagnetic ejection intelligent lock, the movement of the lock tongue is controlled by controlling the attraction of the magnet, the magnetic attraction is used as power, the arrangement of a motor and a transmission part is avoided, the number of parts is reduced, and the structure of the intelligent lock is simpler; and meanwhile, the occurrence probability of faults is also reduced.

Description

Electromagnetic ejection intelligent lock

Technical Field

The invention relates to the technical field of intelligent locks, in particular to an electromagnetic ejection intelligent lock.

Background

In the prior art, the spring bolt of intelligence lock mostly drives through the motor and removes, carries out the transmission through a plurality of gears between motor and the spring bolt, and each gear intermeshing changes the direction of rotation of motor, can make the spring bolt move to opening the position or move to locking the position by opening the position by locking the displacement.

Because the structure of the intelligent lock is not large, the number of parts is increased due to the arrangement mode of the motor and the gear, and the gear is a high-precision device, the requirements on the process and the supplied materials are extremely strict in the mutual combination process, the technical requirements in the assembly process are higher, and the production cost is high; and one or more gears have problems, the whole system is in paralysis and has poor reliability.

Disclosure of Invention

In view of this, an object of the present invention is to provide an electromagnetic ejection intelligent lock, which can move a bolt by arranging an electromagnet, thereby avoiding the arrangement of a motor and a gear transmission mechanism, simplifying the structure of the intelligent lock, and improving the reliability.

In order to achieve the above purpose, the invention provides the following technical scheme:

an electromagnetic ejection smart lock comprising a lock housing and a locking assembly, the locking assembly comprising: the magnetic switch comprises a first magnetic part for connecting a fixing device, a second magnetic part for connecting an opening and closing device and a bolt which is movably arranged between the first magnetic part and the second magnetic part and can be selectively attracted with one of the first magnetic part and the second magnetic part; the lock shell is internally provided with a control part which is used for controlling the movement direction of the bolt by controlling the attraction of the bolt and the first magnetic attraction part or the second magnetic attraction part;

the lock tongue moves to a locking position which is sucked with the first magnetic suction part, so that the locking assembly is in a locking state; the lock tongue moves to an opening position which is attracted with the second magnetic suction part, so that the locking assembly is in an opening state.

Preferably, the first magnetic part and the second magnetic part are both first electromagnets electrically connected with the control part, the lock tongue is a permanent magnet, and the control part respectively controls the flow direction of current in the first magnetic part and the second magnetic part so as to change the motion direction of the lock tongue.

Preferably, the first magnetic part and the second magnetic part are both permanent magnets, the bolt is a second electromagnet electrically connected with the control part, and the control part changes the movement direction of the bolt by changing the flow direction of current in the second electromagnet;

and the magnetism of the two opposite ends of the first magnetic part and the second magnetic part is the same.

Preferably, the second electromagnet comprises an iron core and a conducting wire wound on the outer periphery of the iron core, a groove for winding the conducting wire is formed in the outer periphery of the iron core, and the depth of the groove is larger than the winding thickness of the conducting wire.

Preferably, the outer peripheral part of the second electromagnet is sleeved with a protective sleeve, and the protective sleeve is fixedly arranged relative to the second electromagnet.

Preferably, the protective sleeve is made of ceramic materials.

Preferably, a sliding rail convenient for the spring bolt to slide and a sliding block matched with the sliding rail are arranged between the first magnetic suction part and the second magnetic suction part, and the spring bolt is fixedly arranged on the sliding block.

Preferably, the sliding block is provided with a rolling device which is in rolling contact with the sliding rail, and the rolling device is arranged in a rolling way relative to the sliding block.

Preferably, both ends of the sliding rail in the length direction are respectively provided with a limiting block in a protruding manner, and the limiting blocks are used for limiting the moving distance of the lock tongue.

Preferably, the control part is provided with a positive-negative voltage switching circuit which is electrically connected with the first electromagnet or the second electromagnet, and the positive-negative voltage switching circuit corresponds to the first electromagnet and the second electromagnet one to one.

The invention provides an electromagnetic ejection intelligent lock, which comprises a lock shell and a locking assembly, wherein the locking assembly comprises: the magnetic locking device comprises a first magnetic part, a second magnetic part and a bolt, wherein the first magnetic part is used for being connected with a fixing device, the second magnetic part is used for being connected with an opening and closing device, and the bolt is movably arranged between the first magnetic part and the second magnetic part and can be selectively attracted with the first magnetic part or the second magnetic part; the lock shell is internally provided with a control part which is used for controlling the moving direction of the bolt by controlling the attraction of the bolt and the first magnetic attraction part or the second magnetic attraction part; the lock tongue moves to a locking position which is sucked with the first magnetic suction part so as to enable the locking component to be in a locking state; the lock tongue moves to an opening position which is attracted with the second magnetic suction part so as to enable the locking component to be in an opening state.

When the electromagnetic ejection intelligent lock is required to be in a locked state, the opening and closing device is closed to close the opening and closing device and the fixing device, and then the spring bolt is controlled to move towards the first magnetic suction part through the control part until the spring bolt moves to a locking position attracted with the first magnetic suction part, so that the intelligent lock is locked; when the electromagnetic ejection intelligent lock is required to be in an open state, the control part can control the bolt to move towards the second magnetic suction part until the bolt moves to an opening position attracted with the second magnetic suction part, so that the intelligent lock is opened, and the opening and closing device can be opened relative to the fixing device.

Compared with the prior art, the electromagnetic ejection intelligent lock provided by the invention has the advantages that the movement of the lock tongue is controlled by controlling the attraction of the magnet, the magnetic attraction is used as the power, the arrangement of a motor and a transmission part is avoided, the number of parts is reduced, and the structure of the intelligent lock is simpler; the occurrence probability of the faults is reduced, and the production cost is reduced.

Drawings

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

Fig. 1 is a schematic structural diagram of an embodiment of an electromagnetic ejection intelligent lock provided by the invention;

FIG. 2 is a schematic structural diagram of the electromagnetic ejection intelligent lock in the locked state in FIG. 1;

FIG. 3 is an exploded view of the electromagnetically ejected smart lock of FIG. 2 in a locked state;

fig. 4 is a schematic circuit structure diagram of a specific embodiment of a control circuit in a control part of the electromagnetic ejection intelligent lock provided by the invention;

fig. 5 is a schematic circuit diagram of the H-bridge circuit.

In FIGS. 1-5:

the device comprises a fixing device 1, an opening and closing device 2, a first magnetic attraction part 3, a second magnetic attraction part 4, a bolt 5, a second electromagnet 51, a protective sleeve 52, a control part 6, a slide rail 7, a lock shell 8, a control end 01, a first NPN triode 02, a first PNP triode 03, a second PNP triode 04, a third PNP triode 05, a second NPN triode 06 and a third NPN triode 07.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The core of the invention is to provide an electromagnetic ejection intelligent lock, which can control the movement of a bolt through magnetic attraction, avoid the arrangement of a motor and a transmission part, reduce the number of parts, simplify the structure of the intelligent lock and improve the reliability.

Referring to fig. 1-5, fig. 1 is a schematic structural diagram of an embodiment of an electromagnetic ejection intelligent lock provided by the present invention; FIG. 2 is a schematic structural diagram of the electromagnetic ejection intelligent lock in the locked state in FIG. 1; FIG. 3 is an exploded view of the electromagnetically ejected smart lock of FIG. 2 in a locked state; fig. 4 is a schematic circuit structure diagram of a specific embodiment of a control circuit in a control part of the electromagnetic ejection intelligent lock provided by the invention; fig. 5 is a schematic circuit diagram of the H-bridge circuit.

The electromagnetic ejection intelligent lock provided by the embodiment comprises a lock shell 8 and a locking assembly, wherein the locking assembly comprises: the magnetic locking device comprises a first magnetic part 3 used for being connected with the fixing device 1, a second magnetic part 4 used for being connected with the opening and closing device 2, and a bolt 5 which is movably arranged between the first magnetic part 3 and the second magnetic part 4 and can be selectively attracted with the first magnetic part 3 or the second magnetic part 4; a control part 6 is arranged in the lock shell 8, and the control part 6 controls the attraction of the bolt 5 and the first magnetic attraction part 3 or the second magnetic attraction part 4 to control the moving direction of the bolt 5; the bolt 5 moves to a locking position which is attracted with the first magnetic attraction part 3 so as to enable the locking component to be in a locking state, and the bolt 5 moves to an unlocking position which is attracted with the second magnetic attraction part 4 so as to enable the locking component to be in an unlocking state.

It should be noted that the fixing device 1 may be a door frame, a window frame, and the like that are fixedly disposed, and the opening and closing device 2 may be a door leaf, a window sash, and the like, and of course, the fixing device 1 and the opening and closing device 2 may also be other structures, which is determined according to actual situations, and is not described herein again.

In the using process, when the electromagnetic ejection intelligent lock is required to be in a locked state, the opening and closing device 2 is closed with the fixing device 1, and then the control part 6 controls the bolt 5 to move towards the first magnetic suction part 3 until the bolt 5 moves to a locking position which is sucked with the first magnetic suction part 3, so that the intelligent lock is locked; when the electromagnetic ejection intelligent lock needs to be in an open state, the control part 6 can control the bolt 5 to move towards the second magnetic suction part 4 until the bolt 5 moves to an open position attracted with the second magnetic suction part 4, so that the intelligent lock is opened, and the opening and closing device 2 can be opened relative to the fixing device 1.

It should be noted that, in the moving process of the lock tongue 5, the attraction force of the magnet, which may be the attraction force of the electromagnet or the attraction force of the permanent magnet, is used for providing power, and is determined specifically according to actual situations, and is not described herein again.

Compared with the prior art, the electromagnetic ejection intelligent lock provided by the invention has the advantages that the movement of the lock tongue 5 is controlled by controlling the attraction of the magnet, the magnetic attraction is used as the power, the arrangement of a motor and a transmission part is avoided, the number of parts is reduced, and the structure of the intelligent lock is simpler; the occurrence probability of the faults is reduced, and the production cost is reduced.

On the basis of the above embodiment, in order to facilitate the movement of the control bolt 5, the first magnetic attraction part 3 and the second magnetic attraction part 4 can be a first electromagnet electrically connected with the control part 6, the bolt 5 is a permanent magnet, and the control part 6 respectively controls the flow direction of the current in the first magnetic attraction part 3 and the second magnetic attraction part 4 to change the movement direction of the bolt 5.

It should be noted that, when the first magnetic attraction part 3 and the second magnetic attraction part 4 are both the first electromagnet, the latch 5 may also be an iron component, and naturally, in order to maintain a strong magnetic attraction force between the latch 5 and the first magnetic attraction part 3 or the second magnetic attraction part 4, it is preferable that the latch 5 is a permanent magnet.

In the using process, when the intelligent lock needs to be locked, the control part 6 can be used for controlling the flow direction of current in the external coil of the first electromagnet serving as the first magnetic absorption part 3, so that the end, close to the bolt 5, of the first magnetic absorption part 3 is opposite to the polarity of the bolt 5, so that the first magnetic absorption part 3 has attraction force on the bolt 5, meanwhile, the control part 6 is used for controlling the flow direction of current in the external coil of the first electromagnet serving as the second magnetic absorption part 4, so that the end, close to the bolt 5, of the second magnetic absorption part 4 is the same as the polarity of the bolt 5, so that the bolt 5 has repulsive force on the bolt 5, or the current serving as the external coil of the first electromagnet of the second magnetic absorption part 4 is disconnected, so that the second magnetic absorption part 4 has no force on the bolt 5, so that the bolt 5 moves towards the direction close to the first.

When the intelligent lock needs to be opened, the flow direction of current in the first electromagnet external coil serving as the first magnetic absorption part 3 can be controlled through the control part 6, so that one end, close to the bolt 5, of the first magnetic absorption part 3 is the same as the polarity of the bolt 5, so that the first magnetic absorption part 3 has repulsive force to the bolt 5, or the current in the first magnetic absorption part 3 is cut off, so that the first magnetic absorption part 3 does not have force on the bolt 5, meanwhile, the flow direction of the current in the first electromagnet external coil serving as the second magnetic absorption part 4 is controlled through the control part 6, one end, close to the bolt 5, of the second magnetic absorption part 4 is opposite to the polarity of the bolt 5, attraction force is provided for the bolt 5, so that the bolt 5 moves towards the direction close to the second magnetic absorption part 4, and the intelligent lock is opened.

On the basis of the above embodiment, in order to simplify the structure of the control part 6, the first magnetic part 3 and the second magnetic part 4 can be both permanent magnets, the latch 5 is a second electromagnet 51 electrically connected with the control part 6, the control part 6 changes the moving direction of the latch 5 by changing the flowing direction of the current in the second electromagnet 51, and the magnetism of the two opposite ends of the first magnetic part 3 and the second magnetic part 4 is the same.

In the process of controlling the movement of the bolt 5, only the flow direction of current in the coil of the second electromagnet 51 in the bolt 5 needs to be controlled, the control mode is simpler, and the operation is convenient. When the intelligent lock needs to be locked, the control part 6 can control the flow direction of current in an external coil of the second electromagnet 51 serving as the lock tongue 5, so that the polarity of one end, close to the lock tongue 5, of the first magnetic attraction part 3 is opposite to that of the lock tongue 5, the lock tongue 5 has attraction force on the first magnetic attraction part 3, the lock tongue 5 moves towards the direction close to the first magnetic attraction part 3, and the locking of the intelligent lock is realized; when the intelligent lock needs to be opened, the flow direction of the current of the external coil of the second electromagnet 51 serving as the bolt 5 can be controlled by the control part 6, so that the polarity of one end, close to the bolt 5, of the second magnetic attraction part 4 is opposite to that of the bolt 5, the bolt 5 has attraction force on the first magnetic attraction part 3, the bolt 5 moves towards the direction close to the second magnetic attraction part 4, and the intelligent lock is opened.

On the basis of the above embodiment, when the latch 5 is the second electromagnet 51, in order to avoid the coil outside the second electromagnet 51 from being worn, the second electromagnet 51 may include an iron core and a conducting wire wound around an outer peripheral portion of the iron core, the outer peripheral portion of the iron core is provided with a groove for winding the conducting wire, and a depth of the groove is greater than a winding thickness of the conducting wire.

Because the depth of the groove is greater than the winding thickness of the wire, the wire cannot be scratched when the bolt 5 moves.

Preferably, in order to further protect the lead, a protective cover 52 may be fitted over an outer peripheral portion of the second electromagnet 51, and the protective cover 52 may be fixed to the second electromagnet 51.

Preferably, the protective sleeve 52 is made of ceramic, and the ceramic material is hard to avoid abrasion.

On the basis of the above embodiment, in order to make the latch bolt 5 have a certain directionality in the moving process, a slide rail 7 facilitating the sliding of the latch bolt 5 and a slide block matched with the slide rail 7 can be arranged between the first magnetic attraction part 3 and the second magnetic attraction part 4, and the latch bolt 5 is fixedly arranged on the slide block.

Preferably, the slider and the protective sleeve 52 are of an integral structure, and the protective sleeve 52 can be directly arranged on the sliding rail 7 in a sliding manner.

In addition to the above-described embodiments, in order to reduce the friction between the slider and the slide rail 7, a rolling device that is in rolling contact with the slide rail 7 may be mounted on the slider, and the rolling device is arranged to roll with respect to the slider.

The rolling device can be a roller, a ball and other structures, and can also be other structures meeting the requirements and capable of reducing friction force, and is determined according to the actual situation, and is not described in detail herein.

The number of the rollers may be 1, 2, 3 or more, which is determined according to the actual situation and is not described herein.

On the basis of the above embodiment, in order to limit the moving position of the latch bolt 5, the end of the latch bolt 5 is prevented from colliding with the first magnetic attraction part 3 or the second magnetic attraction part 4, and the two ends of the slide rail 7 in the length direction can be provided with the limiting blocks for limiting the moving distance of the latch bolt 5.

The arrangement of the limiting block can also avoid the separation of the protective sleeve 52 and the second electromagnet 51.

In addition to the above-described embodiment, in order to change the direction of the current flowing into the first electromagnet or the second electromagnet 51, the control unit 6 may be provided with a positive/negative voltage switching circuit for electrically connecting to the first electromagnet or the second electromagnet 51, and the positive/negative voltage switching circuit may correspond to each of the first electromagnet and the second electromagnet 51.

The one-to-one correspondence between the positive and negative voltage switching circuits and the electromagnets means that when the first magnetic suction part 3 and the second magnetic suction part 4 are both first electromagnets, the control part 6 is provided with at least two positive and negative voltage switching circuits, and one positive and negative voltage switching circuit corresponds to one first electromagnet; when the first magnetic attraction part 3 and the second magnetic attraction part 4 are permanent magnets and the latch 5 is the second electromagnet 51, the control part 6 is provided with positive and negative voltage switching circuits for connecting with the second electromagnet 51 as the latch 5, and the number of the positive and negative voltage switching circuits is the same as that of the second electromagnets 51.

The positive and negative voltage switching circuit may be an H-bridge circuit, or may be other circuits capable of performing positive and negative voltage switching, which is determined according to actual conditions and is not described herein.

As shown in fig. 4 and 5, the control circuit in fig. 4 is a circuit connected to the H-bridge circuit, when the control terminal 01 inputs a high level, the output terminal connected to the first NPN transistor 02 outputs a high level, and the output terminal connected to the first PNP transistor 03 outputs a low level, and when the control terminal 01 inputs a low level, the output terminal connected to the first NPN transistor 02 outputs a low level, and the output terminal connected to the first PNP transistor 03 outputs a high level.

In the H-bridge circuit, the NET1 end is connected to the output end of the control circuit in fig. 4, which is connected to the first PNP triode 03, and the NET2 end is connected to the output end of the control circuit in fig. 4, which is connected to the first NPN triode 02; when the NET1 terminal is at a high level and the NET2 terminal is at a low level, the current passes through the third PNP transistor 05 and the third NPN transistor 07 and is then output, and when the NET1 terminal is at a low level and the NET2 terminal is at a high level, the current passes through the second PNP transistor 04 and the second NPN transistor 06 and is then output, so that the direction of the current is changed.

It should be noted that, in the present application, the first magnetic attraction part 3 and the second magnetic attraction part 4, the first electromagnet and the second electromagnet 51, the first NPN type triode 02, the second NPN type triode 06, and the third NPN type triode 07, and the first, the second, and the third ones of the first PNP type triode 03, the second PNP type triode 04, and the third PNP type triode 05 are only used for distinguishing the difference of the positions, and are not sequentially distinguished.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.

The electromagnetic ejection intelligent lock provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. An electromagnetic ejection smart lock comprising a lock housing (8) and a locking assembly, characterized in that said locking assembly comprises: the magnetic locking device comprises a first magnetic part (3) used for connecting a fixing device (1), a second magnetic part (4) used for connecting an opening and closing device (2), and a bolt (5) which is movably arranged between the first magnetic part (3) and the second magnetic part (4) and can be selectively attracted with one of the first magnetic part and the second magnetic part; a control part (6) which is used for controlling the moving direction of the bolt (5) by controlling the attraction of the bolt (5) and the first magnetic attraction part (3) or the second magnetic attraction part (4) is arranged in the lock shell (8);

the lock tongue (5) moves to a locking position which is sucked with the first magnetic suction part (3) so as to enable the locking component to be in a locking state; the lock tongue (5) moves to an opening position which is attracted with the second magnetic attraction part (4) so as to enable the locking component to be in an opening state.

2. The electromagnetic ejection intelligent lock according to claim 1, wherein the first magnetic attraction part (3) and the second magnetic attraction part (4) are both first electromagnets electrically connected with the control part (6), the bolt (5) is a permanent magnet, and the control part (6) changes the movement direction of the bolt (5) by respectively controlling the flow direction of current in the first magnetic attraction part (3) and the second magnetic attraction part (4).

3. The electromagnetic ejection intelligent lock according to claim 1, wherein the first magnetic attraction part (3) and the second magnetic attraction part (4) are both permanent magnets, the bolt (5) is a second electromagnet (51) electrically connected with the control part (6), and the control part (6) changes the movement direction of the bolt (5) by changing the flow direction of current in the second electromagnet (51);

and the magnetism of the two opposite ends of the first magnetic part (3) and the second magnetic part (4) is the same.

4. The electromagnetic ejection intelligent lock according to claim 3, wherein the second electromagnet (51) comprises an iron core and a wire wound around the outer periphery of the iron core, the outer periphery of the iron core is provided with a groove for winding the wire, and the depth of the groove is greater than the winding thickness of the wire.

5. An electromagnetic ejection intelligent lock according to claim 3, characterized in that a protective sleeve (52) is sleeved on the outer circumference of the second electromagnet (51), and the protective sleeve (52) is fixedly arranged relative to the second electromagnet (51).

6. The electromagnetic ejection intelligent lock according to claim 5, characterized in that the protective sleeve (52) is a ceramic protective sleeve.

7. The electromagnetic ejection intelligent lock according to any one of claims 1 to 6, wherein a slide rail (7) for facilitating the sliding of the bolt (5) and a slide block matched with the slide rail (7) are arranged between the first magnetic attraction part (3) and the second magnetic attraction part (4), and the bolt (5) is fixedly arranged on the slide block.

8. The electromagnetic ejection smart lock according to claim 7, characterized in that the sliding block is equipped with rolling means in rolling contact with the sliding rail (7), the rolling means being arranged rolling with respect to the sliding block.

9. The electromagnetic ejection intelligent lock according to claim 8, wherein the two ends of the sliding rail (7) in the length direction are respectively provided with a limiting block in a protruding manner for limiting the moving distance of the bolt (5).

10. The electromagnetic ejection intelligent lock according to any one of claims 2 to 6, wherein the control part (6) is provided with a positive-negative voltage switching circuit for electrically connecting with the first electromagnet or the second electromagnet (51), and the positive-negative voltage switching circuit corresponds to the first electromagnet or the second electromagnet one by one.