Electromagnet, electromagnetic assembly and intelligent lock cylinder

Abstract

This utility model discloses an electromagnet, an electromagnetic component, and a smart lock cylinder. The electromagnet includes: a coil frame, a permanent magnet, an elastic element, a bushing, and a magnetic cap. A coil is disposed on the coil frame. The permanent magnet is slidably inserted into the coil frame. When the coil is energized, it generates a magnetic field, causing the permanent magnet to retract into the coil frame. The elastic element is used to reset the permanent magnet. The bushing is connected to the end of the permanent magnet away from the coil frame. The magnetic cap is attracted by the magnetic field. The end of the magnetic cap facing the bushing forms a mounting post. The end of the bushing away from the permanent magnet has a mounting hole corresponding to the mounting post. The magnetic cap is disposed at the end of the bushing away from the permanent magnet by the mounting post and the mounting hole. Through the above arrangement, the repulsive force of the external magnetic field on the permanent magnet and the attractive force of the external magnetic field on the magnetic cap form opposite forces, thereby canceling out the magnetic force of the external magnetic field. This eliminates the potential for malfunction due to the external magnetic field and ensures the safety of the application device.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetics, and specifically discloses an electromagnet, an electromagnetic component, and an intelligent lock cylinder. Background Technology

[0002] An electromagnet is a device that generates a magnetic field when energized, which drives specific components to produce a stroke. It generally includes a coil, a moving body, and a reset component. It has a wide range of applications, including smart locks as a switching device, and electromagnetic valves and electrical control cabinet locks as contactors to control current.

[0003] The moving part consists of magnetic components and structural components. Traditional magnetic components are generally made of ferromagnetic materials, but such materials need to be magnetized by a magnetic field before they can move under the influence of the magnetic field. Therefore, it takes a certain amount of time to magnetize the magnetic components. Only after the magnetization exceeds a certain limit can sufficient magnetic force be generated to drive the moving parts and produce a stroke.

[0004] Under the same conditions, the larger the size of the magnetic component, the longer the magnetization time. This results in a significant delay in the action of an electromagnet with a large magnetic component from the moment it is energized, which is not conducive to scenarios requiring precise control.

[0005] Furthermore, the larger the magnetic component, the stronger the magnetic field strength required by the coil, and the higher the corresponding coil power consumption. On the one hand, this is detrimental to the battery life of battery-powered devices; on the other hand, for electromagnets that need to be kept energized and engaged, high coil power consumption will also lead to increased heat generation in the coil after engagement, and excessively high temperatures will damage the device. Therefore, it is necessary to impose strict limits on the maximum engagement time.

[0006] To avoid delay, battery life, and heat generation issues, permanent magnets made of permanent magnetic materials can be used instead of magnetic bodies. Compared to ferromagnetic materials, permanent magnets have a stronger magnetic field of their own. They can generate sufficient magnetic force to drive structural components under the influence of the coil's magnetic field without magnetization. They also have lower requirements for the strength of the coil's magnetic field, which can reduce action delay, effectively reduce the power consumption of the electromagnet, and reduce heat generation, thereby extending the maximum engagement time.

[0007] However, this improvement has a significant drawback: it is prone to malfunction due to the influence of external magnetic fields. Under normal circumstances, when the electromagnet is not energized, the movable part remains extended relative to the coil frame. After the electromagnet is energized, the movable part retracts into the coil frame. However, when there is an external magnetic field with a suitable direction, due to the sensitivity of the permanent magnet 33 to the magnetic field, the movable part will retract into the coil frame under the influence of the external magnetic field, causing malfunction.

[0008] Electromagnets can be used as switches in various devices with hooks, such as vending machines and shared power bank cabinets, to lock and unlock the hooks. However, this defect makes it easy for malicious users to apply an external magnetic field to drive the retractable coil frame, thus unlocking the device from the outside without verification, which poses a significant security problem. Utility Model Content

[0009] To achieve the above objectives, this utility model discloses an electromagnet, an electromagnetic component, and an intelligent lock cylinder. By setting a magnetic cap that can be attracted by magnetic force at the end of the bushing away from the permanent magnet, the repulsive force of the external magnetic field on the permanent magnet and the attractive force of the external magnetic field on the magnetic cap form opposite forces, thereby canceling out the magnetic force of the external magnetic field and eliminating the hidden danger of malfunction caused by the action of the external magnetic field.

[0010] The technical solution adopted by this utility model to solve its problem is:

[0011] Electromagnets, including:

[0012] A coil frame, on which coils are mounted;

[0013] The permanent magnet is slidably inserted into the coil frame. When the coil is energized, it generates a magnetic field that causes the permanent magnet to retract into the coil frame.

[0014] The elastic element is used to reset the permanent magnet;

[0015] The bushing is connected to the end of the permanent magnet away from the coil frame;

[0016] The magnetic cap is attracted by a magnetic field. The end of the magnetic cap extending toward the bushing forms a mounting post. The end of the bushing away from the permanent magnet has a mounting hole corresponding to the mounting post. The magnetic cap is positioned at the end of the bushing away from the permanent magnet by the mounting post and the mounting hole.

[0017] By setting it up as described above, the repulsive force of the external magnetic field on the permanent magnet and the attractive force of the external magnetic field on the magnetic cap are made to act in opposite directions, thereby canceling out the magnetic force of the external magnetic field. This eliminates the hidden danger of malfunction caused by the external magnetic field and ensures the safe use of the application equipment.

[0018] Based on the same concept, this application also proposes an electromagnetic component, comprising:

[0019] The coil holder is located inside the toggle sleeve.

[0020] The clutch sleeve is movably connected to the actuating sleeve, and the bushing is slidably connected inside the clutch sleeve;

[0021] The clutch sleeve is provided with a ball groove connecting the actuating sleeve and the bushing. A movable ball is provided in the ball groove. When the coil is energized, a magnetic field is generated, causing the permanent magnet to retract into the coil frame, thereby driving the bushing to push the ball to abut against the actuating sleeve, so that the clutch sleeve and the actuating sleeve are relatively fixed.

[0022] With the above setup, when there is a magnetic field at the end of the bushing away from the permanent magnet, if the permanent magnet is subjected to a magnetic force that causes it to retract into the coil frame and tends to move towards the coil frame, the magnetic cap on the bushing will be attracted by the magnetic force and tend to move towards the direction of the magnetic field. Since the bushing is connected to the permanent magnet, it is equivalent to the two ends of the bushing being subjected to two opposite forces, which can cancel out the tendency of the permanent magnet to retract into the coil frame, eliminate the hidden danger of malfunction caused by external magnetic fields, and ensure the safe use of the application equipment.

[0023] As an optional implementation, a ramp is provided at the ball groove of the bushing. The thickness of the ramp gradually decreases toward the permanent magnet. By driving the bushing, the thickness of the part of the ramp that contacts the ball increases, so as to push the ball to abut against the actuating sleeve.

[0024] When the ball contacts the part of the ramp with the smallest thickness, the ball is at the end of the ball groove near the bushing. At this time, the ball cannot be fixed between the clutch sleeve and the shift sleeve, and the clutch sleeve and the shift sleeve are in a movable connection state. When the ball contacts the part of the ramp with the largest thickness, the ramp will push the ball towards the end of the ball groove near the shift sleeve until it abuts against the shift sleeve, fixing the ball between the clutch sleeve and the shift sleeve. This makes the clutch sleeve and the shift sleeve relatively fixed. Therefore, the thickness of the part of the ramp that contacts the ball can be increased by driving the bushing, so as to push the ball abut against the shift sleeve.

[0025] Based on the same concept, this application also proposes a smart lock cylinder, comprising:

[0026] As described above, in electromagnetic components, the actuating sleeve is used to actuate the locking tongue;

[0027] The door inner module is used to drive the toggle sleeve to actuate the latch from the inside of the door;

[0028] The external module has a rotating part connected to the clutch sleeve. The external module is used to start the verification equipment. When the verification equipment is successfully verified, the coil is energized to generate a magnetic field.

[0029] The working process of the smart lock cylinder described above is as follows:

[0030] Once the verification device is successfully verified, the coil is energized to generate a magnetic field. Under the action of the magnetic force, the permanent magnet overcomes the resistance of the elastic element and retracts into the coil frame, thereby driving the bushing to push the ball to abut against the actuating sleeve, fixing the clutch sleeve and the actuating sleeve relative to each other, and simultaneously compressing the elastic element. When the clutch sleeve is rotated by the external module to drive the actuating sleeve to move the lock tongue and unlock, the coil is de-energized, the magnetic field disappears, and the permanent magnet is reset under the action of the elastic element and extends out of the coil frame, thereby driving the bushing to reset so that the ball is reset, releasing the relative fixed state of the clutch sleeve and the actuating sleeve, and restoring the clutch sleeve and the actuating sleeve to the movable connection state.

[0031] With the above setup, when there is a magnetic force outside the door that causes the permanent magnet to retract into the coil frame, the magnetic cap on the bushing will be attracted by the magnetic force and tend to move in the direction of the magnetic field. Since the bushing is connected to the permanent magnet, it is equivalent to the two ends of the bushing being subjected to two opposite forces. Therefore, the tendency of the permanent magnet to retract into the coil frame can be canceled, eliminating the hidden danger of attacking the lock cylinder from the outside of the door and ensuring the safety of using the smart door lock.

[0032] In a more preferred embodiment, since the coil frame is located inside the actuating sleeve, when the actuating sleeve is rotated to actuate the lock tongue, the coil frame will also rotate. If a general conductive structure is used, the electrodes of the coil will be disconnected from the conductive structure during rotation, and the current cannot be conducted, causing the electromagnetic component to malfunction. To ensure the normal operation of the electromagnetic component, this smart lock cylinder also includes a brush assembly, which is used to maintain the current on / off state when the coil rotates.

[0033] As an optional implementation, the brush assembly includes a conductive ring and a brush. The conductive ring is electrically connected to the electrodes of the coil and can rotate with the actuating sleeve. The brush is used to conduct the current from the power supply to the conductive ring.

[0034] Because the entire conductive ring is conductive, it can always maintain a connection with the brush when the rotating sleeve rotates, thus keeping the coil energized and ensuring that the coil can stably form a magnetic field to attract the permanent magnet.

[0035] As an optional implementation, the brush assembly also includes a base connected to a toggle sleeve, a conductive ring sleeved on the base to rotate with the toggle sleeve, and a brush connected to the output terminal of the power supply and in contact with the periphery of the conductive ring.

[0036] As an alternative implementation, a connecting shaft is provided at one end of the toggle sleeve facing the inner module of the door, and the rotating part of the inner module of the door is connected to the connecting shaft, so that the toggle sleeve can be driven to move the latch through the inner module of the door.

[0037] As an optional implementation, the door module includes a door lock housing and a door handle assembly. The door lock housing is connected to an electromagnetic component, and the door handle assembly is movably connected to the door lock housing. The door handle assembly is the rotating part of the door module.

[0038] As an optional implementation, the door module includes a door lock housing and a door handle. The door lock housing is connected to an electromagnetic component, and the door handle is movably connected to the door lock housing. The door handle is the rotating part of the door module.

[0039] As an optional implementation, the door module also includes a transmission assembly, through which the door handle forms a transmission connection with the clutch sleeve.

[0040] As an optional implementation, a toggle block is provided on the outer periphery of the toggle sleeve. When the toggle sleeve rotates, the toggle block rotates synchronously and actuates the latch. The toggle block can be positioned between the inner and outer door modules of the toggle sleeve for easy installation and use.

[0041] As an optional implementation, this smart lock cylinder also includes a base, with the external module, electromagnetic component, and internal module arranged sequentially on the base.

[0042] As an optional implementation, the door module also includes a motor, which is connected to the transmission assembly. When the door handle is rotated, the clutch sleeve is driven by the transmission assembly, and the motor is driven by the transmission assembly to provide power to the verification device for verification.

[0043] In summary, compared with the prior art, the beneficial effects of the electromagnet, electromagnetic components, and smart lock cylinder provided by this utility model are as follows:

[0044] By setting a magnetic cap that can be attracted by magnetic force at the end of the bushing away from the permanent magnet, when there is a magnetic field at the end of the bushing away from the permanent magnet, if the permanent magnet is subjected to a magnetic force that causes it to retract into the coil frame and has a tendency to move towards the coil frame, the magnetic cap on the bushing will be attracted by the magnetic force and have a tendency to move towards the direction of the magnetic field. Since the bushing is connected to the permanent magnet, it is equivalent to the two ends of the bushing being subjected to two opposite forces, thus canceling out the tendency of the permanent magnet to retract into the coil frame and eliminating the hidden danger of malfunction caused by external magnetic field. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a perspective view of an embodiment of an electromagnet according to this utility model;

[0047] Figure 2 This is a cross-sectional view of an embodiment of the electromagnet of this utility model;

[0048] Figure 3 This is an exploded view of an embodiment of the electromagnet of this utility model;

[0049] Figure 4 This is a perspective view of an embodiment of an electromagnetic component of this utility model;

[0050] Figure 5 This is a cross-sectional view of an embodiment of an electromagnetic component of this utility model;

[0051] Figure 6 This is a disassembled diagram of an embodiment of an electromagnetic component of this utility model;

[0052] Figure 7 This is a perspective view of an embodiment of the intelligent lock cylinder of this utility model;

[0053] Figure 8 This is a cross-sectional view of an embodiment of the intelligent lock cylinder of this utility model;

[0054] Figure 9 This is a first disassembly diagram of an embodiment of the smart lock cylinder of this utility model;

[0055] Figure 10 This is a second disassembly diagram of an embodiment of the smart lock cylinder of this utility model.

[0056] Explanation of key figure labels:

[0057] 1. External door module; 11. External door handle; 12. External door lock housing; 13. Motor; 14. Transmission assembly; 15. Positioning post; 2. Internal door module; 21. Internal door handle; 22. Internal door lock housing; 3. Electromagnetic assembly; 31. Actuating sleeve; 311. Connecting shaft; 312. Slot; 313. Actuating block; 32. Coil frame; 321. Chess teeth; 33. Permanent magnet; 34. Elastic element; 35. Clutch sleeve; 351. Ball groove; 352. Connecting hole; 36. Bushing; 360. Mounting hole; 361. Slope; 37. Magnetic cap; 371. Mounting post; 38. Ball bearing; 4. Brush assembly; 41. Base; 42. Conductive ring; 43. Brush; 44. Power supply; 5. Base. Detailed Implementation

[0058] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0059] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0060] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0061] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0062] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different as an alternative implementation), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0063] To avoid the security issue of unlocking the door from the outside without verification by applying an external magnetic field to drive the retractable coil frame, this utility model discloses an electromagnetic component and a smart lock cylinder using it. By setting a magnetically attracted cap at the end of the bushing away from the permanent magnet, the repulsive force of the external magnetic field on the permanent magnet and the attractive force of the external magnetic field on the magnetic cap form opposite forces, thereby canceling the magnetic force on the outside of the door. This avoids the problem of controlling the electromagnetic component with a magnet from the outside of the door, ensuring the safe use of the smart lock. The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0064] Example 1

[0065] according to Figures 1 to 3 As shown, this utility model provides an electromagnet, including: a coil frame 32, a permanent magnet 33, an elastic element 34, a bushing 36, and a magnetic cap 37.

[0066] Specifically, a coil (not shown in the figure) is provided on the coil frame 32; a permanent magnet 33 is slidably inserted into the coil frame 32, and when the coil is energized, it generates a magnetic field that causes the permanent magnet 33 to retract into the coil frame 32; an elastic element 34 is used to reset the permanent magnet 33, and when the coil is de-energized, the magnetic field disappears, and the permanent magnet 33 is reset and extends out of the coil frame 32 under the action of the elastic element 34; a bushing 36 is connected to the end of the permanent magnet 33 away from the coil frame 32; a magnetic cap 37 is provided at the end of the bushing 36 away from the permanent magnet 33, and the magnetic cap 37 can be attracted by the magnetic field. The magnetic cap 37 extends towards the end of the bushing 36 to form a mounting post 371, and the end of the bushing 36 away from the permanent magnet 33 is provided with a mounting hole 360 ​​corresponding to the mounting post 371. The magnetic cap 37 is provided at the end of the bushing 36 away from the permanent magnet 33 through the mounting post 371 cooperating with the mounting hole 360.

[0067] Through the above settings, the repulsive force of the external magnetic field on the permanent magnet 33 and the attractive force of the external magnetic field on the magnetic cap 37 form opposite forces, thereby canceling out the magnetic force of the external magnetic field. This eliminates the hidden danger of malfunction caused by the external magnetic field and ensures the safe use of the application equipment.

[0068] Example 2

[0069] according to Figures 4 to 6 As shown, this utility model provides an electromagnetic component, including: an electromagnet as described in Embodiment 1, a toggle sleeve 31, and a clutch sleeve 35.

[0070] Specifically, the coil frame 32 is disposed within the actuating sleeve 31; the clutch sleeve 35 is movably connected to the actuating sleeve 31; the bushing 36 is slidably connected within the clutch sleeve 35; the clutch sleeve 35 is provided with a ball groove 351 connecting the actuating sleeve 31 and the bushing 36, and a movable ball 38 is disposed within the ball groove 351. When the coil is energized and generates a magnetic field, the permanent magnet 33 overcomes the resistance of the elastic element 34 under the action of magnetic force and retracts into the coil frame 32, thereby driving the bushing 36 to push the ball 38 to abut against the actuating sleeve 31, so that the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed. When the coil is de-energized, the magnetic field disappears, and the permanent magnet 33 is reset under the action of the elastic element 34 and extends out of the coil frame 32, thereby driving the bushing 36 to reset so that the ball 38 is reset, releasing the state in which the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed, so that the clutch sleeve 35 and the actuating sleeve 31 are restored to the state of movable connection.

[0071] With the above configuration, when there is a magnetic field at the end of the bushing 36 away from the permanent magnet 33, if the permanent magnet 33 is subjected to a magnetic force that causes it to retract into the coil frame 32 and has a tendency to move towards the coil frame 32, the magnetic cap 37 on the bushing 36 will be attracted by the magnetic force and have a tendency to move towards the direction of the magnetic field. Since the bushing 36 is connected to the permanent magnet 33, it is equivalent to the two ends of the bushing 36 being subjected to two opposite forces. Therefore, the tendency of the permanent magnet 33 to retract into the coil frame 32 can be canceled, eliminating the hidden danger of malfunction caused by external magnetic field and ensuring the safe use of the application equipment.

[0072] Similarly, since the permanent magnet 33 needs to retract into the coil frame 32 in order to drive the bushing 36 to push the ball 38 so that the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed, the electromagnetic component will not be activated when the permanent magnet 33 is subjected to the magnetic force that causes it to extend out of the coil frame 32.

[0073] Specifically, a ramp 361 is provided at the ball groove 351 corresponding to the bushing 36. The thickness of the ramp 361 gradually decreases towards the permanent magnet 33. By driving the bushing 36, the thickness of the part of the ramp 361 that contacts the ball 38 increases, so as to push the ball 38 to abut against the actuating sleeve 31. In practical applications, when there is a magnetic field at the end of the bushing 36 away from the permanent magnet 33, the repulsive force on the permanent magnet 33 caused by the magnetic field to retract into the coil frame 32 needs to be less than the attractive force on the magnetic cap 37 to ensure that the permanent magnet 33 does not malfunction. Therefore, by adjusting the relative size and relative distance between the permanent magnet 33 and the magnetic cap 37, it can be ensured that the repulsive force of the external magnetic field on the permanent magnet 33 is less than the attractive force on the magnetic cap 37, thereby achieving the effect of resisting external magnetic field interference.

[0074] The design of this electromagnetic component is particularly effective against external magnetic field interference where the magnetic flux direction is parallel to the axial direction of the permanent magnet 33 and the magnetic field source is located on one side of the magnetic cap 37 (i.e., the end of the bushing 36 away from the permanent magnet 33). If the magnetic induction intensity at the location of the magnetic cap 37 exceeds the magnetic induction intensity at the location of the permanent magnet 33, even if the size of the magnetic cap 37 is smaller than that of the permanent magnet 33, the magnetic cap 37 will be subject to a greater attractive force from the external magnetic field than the permanent magnet 33 will be subject to the repulsive force from the external magnetic field, thus ensuring the effect of resisting external magnetic field interference.

[0075] When the ball 38 contacts the thinnest part of the ramp 361, the ball 38 is located at the end of the ball groove 351 near the bushing 36. At this time, the ball 38 cannot be fixed between the clutch sleeve 35 and the actuating sleeve 31, and the clutch sleeve 35 and the actuating sleeve 31 are in a movable connection state. When the ball 38 contacts the thickest part of the ramp 361, the ramp 361 will push the ball 38 towards the end of the ball groove 351 near the actuating sleeve 31 until it abuts against the actuating sleeve 31, so that the ball 38 is fixed between the clutch sleeve 35 and the actuating sleeve 31, thereby making the clutch sleeve 35 and the actuating sleeve 31 relatively fixed. Therefore, by driving the bushing 36, the thickness of the part of the ramp 361 in contact with the ball 38 can be increased, so as to push the ball 38 abut against the actuating sleeve 31.

[0076] More specifically, the inner wall of the actuating sleeve 31 has a groove 312. The ball 38 is fixed between the end of the ball groove 351 near the actuating sleeve 31 and the groove 312, so that the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed. In an optional embodiment, the coil frame 32 is provided with a tooth 321 corresponding to the groove 312. The coil frame 32 can rotate with the actuating sleeve 31 by engaging the tooth 321 with the groove 312.

[0077] Preferably, the clutch sleeve 35 may be provided with at least two ball grooves 351, and a ball 38 is provided in at least one of the ball grooves 351 to enhance the firmness of the relative fixation between the clutch sleeve 35 and the actuating sleeve 31. The ball grooves 351 may be evenly distributed around the periphery of the clutch sleeve 35 to enhance the uniformity of force. The magnetic cap 37 is made of a high magnetic permeability material or a ferromagnetic material, including but not limited to iron, ferrite, and permalloy. One or more of these materials may be used. In addition, the elastic element 34 may be a spring. The elastic element 34 is disposed between the bushing 36 and the coil frame 32. The permanent magnet 33 passes through the elastic element 34. When the permanent magnet 33 retracts into the coil frame 32, the bushing 36 is driven to move toward the coil frame 32, making the space between the bushing 36 and the coil frame 32 smaller, thereby compressing the elastic element 34. Thus, when the coil is de-energized, the elastic potential energy generated when the elastic element 34 is compressed can be used to reset the permanent magnet 33.

[0078] The aforementioned electromagnetic components can be used not only in smart lock cylinders, but also in electromagnetic valves and electrical control cabinet locks. They can prevent malfunctions caused by external magnetic forces and ensure the safe use of the equipment.

[0079] Example 3

[0080] according to Figures 4 to 7 As shown, this utility model provides an intelligent lock cylinder, including: an electromagnetic component 3, an inner door module 2, and an outer door module 1 as described above.

[0081] Specifically, the actuating sleeve 31 is used to actuate the latch; the inner door module 2 is used to drive the actuating sleeve 31 to actuate the latch from the inside of the door; the rotating part of the outer door module 1 is connected to the clutch sleeve 35, and the outer door module 1 is used to start the verification equipment. When the verification equipment successfully verifies the device, the coil is energized to generate a magnetic field.

[0082] With the above settings, when there is a magnetic force outside the door that causes the permanent magnet 33 to retract into the coil frame 32, the magnetic cap 37 on the bushing 36 will be attracted by the magnetic force and tend to move in the direction of the magnetic field. Since the bushing 36 is connected to the permanent magnet 33, it is equivalent to the two ends of the bushing 36 being subjected to two opposite forces. Therefore, the tendency of the permanent magnet 33 to retract into the coil frame 32 can be canceled, eliminating the hidden danger of attacking the lock cylinder from the outside of the door and ensuring the safety of using the smart door lock.

[0083] The working process of the smart lock cylinder described above is as follows:

[0084] When the verification device is successfully verified, the coil is energized to generate a magnetic field. Under the action of magnetic force, the permanent magnet 33 overcomes the resistance of the elastic element 34 and retracts into the coil frame 32, thereby driving the bushing 36 to push the ball 38 to abut against the actuating sleeve 31, so that the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed, and at the same time the elastic element 34 is compressed. When the clutch sleeve 35 is rotated by the door module 1 to drive the actuating sleeve 31 to move the lock tongue to unlock, the coil is de-energized, the magnetic field disappears, the permanent magnet 33 is reset under the action of the elastic element 34 and extends out of the coil frame 32, thereby driving the bushing 36 to reset so that the ball 38 is reset, releasing the state in which the clutch sleeve 35 and the actuating sleeve 31 are relatively fixed, so that the clutch sleeve 35 and the actuating sleeve 31 are restored to the active connection state.

[0085] In a more preferred embodiment, since the coil frame 32 is disposed inside the actuating sleeve 31, when the actuating sleeve 31 is rotated to actuate the lock tongue, the coil frame 32 will also rotate accordingly. If a general conductive structure is used, the electrodes of the coil will be disconnected from the conductive structure during rotation, and the current cannot be conducted, causing the electromagnetic component 3 to malfunction. To ensure the normal operation of the electromagnetic component 3, this smart lock cylinder also includes a brush assembly 4. The brush assembly 4 is used to maintain the current on / off state when the coil rotates. That is, when the coil rotates after generating a magnetic field, the brush assembly 4 will ensure that the coil is always energized to ensure that the coil stably generates a magnetic field.

[0086] Specifically, the brush assembly 4 includes a conductive ring 42 and a brush 43. The conductive ring 42 is electrically connected to the electrodes of the coil and can rotate with the actuating sleeve 31. The brush 43 is used to conduct the current from the power supply 44 to the conductive ring 42. Because the entire conductive ring 42 is conductive, the conductive ring 42 can always form a connection with the brush 43 when the actuating sleeve 31 rotates, so that the coil is kept energized, thereby ensuring that the coil can stably form a magnetic field to attract the permanent magnet 33. In practical applications, the brush assembly 4 also includes a base 41, which is connected to the actuating sleeve 31. The conductive ring 42 is sleeved on the base 41 and rotates with the actuating sleeve 31. The brush 43 is connected to the output end of the power supply 44 and contacts the periphery of the conductive ring 42.

[0087] Furthermore, a connecting shaft 311 is provided at one end of the actuating sleeve 31 facing the inner door module 2. The rotating part of the inner door module 2 is connected to the connecting shaft 311, so that the actuating sleeve 31 can be driven to move the latch through the inner door module 2. Optionally, the inner door module 2 includes an inner door lock shell 22 and an inner door handle 21. The inner door lock shell 22 is connected to the electromagnetic component 3. The inner door handle 21 is movably connected to the inner door lock shell 22. The inner door handle 21 is the rotating part of the inner door module 2. That is, by rotating the inner door handle 21, the actuating sleeve 31 can be driven to rotate and move the latch.

[0088] Furthermore, the external module 1 includes an external lock housing 12 and an external handle 11. The external lock housing 12 is connected to the electromagnetic component 3, and the external handle 11 is movably connected to the external lock housing 12. The external handle 11 is the rotating part of the external module 1. That is, by rotating the external handle 11, the clutch sleeve 35 can be driven to rotate the actuating sleeve 31 and actuate the latch. Preferably, the external module 1 also includes a transmission component 14, and the external handle is connected to the clutch sleeve 35 through the transmission component 14. More preferably, the clutch sleeve 35 is provided with a connection hole 352 corresponding to the transmission component 14, and the transmission shaft of the transmission component 14 is inserted into the connection hole 352 so that the external handle is connected to the clutch sleeve 35 through the transmission component 14.

[0089] In practice, an actuating block 313 is provided on the outer periphery of the actuating sleeve 31. When the actuating sleeve 31 rotates, the actuating block 313 rotates synchronously and actuates the lock tongue. The actuating block 313 can be set in the middle position between the inner door module 2 and the outer door module 1 of the actuating sleeve 31 for easy installation and use. Furthermore, this smart lock cylinder also includes a base 5, on which the outer door module 1, electromagnetic component 3, and inner door module 2 are arranged in sequence. In addition, the outer door module 1 also includes a motor 13. The motor 13 and the transmission component 14 form a transmission relationship. When the outer door handle 11 is rotated to drive the clutch sleeve 35 through the transmission component 14, the motor 13 is driven by the transmission component 14 to provide power to the verification device for verification.

[0090] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Although optional embodiments of this utility model have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments as well as all changes and modifications falling within the scope of this utility model.

[0091] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0092] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

[0093] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An electromagnet, characterized in that, include: A coil frame (32) on which a coil is disposed; A permanent magnet (33) is slidably inserted into the coil frame (32). When the coil is energized, it generates a magnetic field that causes the permanent magnet (33) to retract into the coil frame (32). An elastic element (34) is used to reset the permanent magnet (33); A bushing (36) is connected to the end of the permanent magnet (33) away from the coil frame (32); A magnetic cap (37) is provided, which can be attracted by a magnetic field. The magnetic cap (37) extends towards the end of the bushing (36) to form a mounting post (371). The end of the bushing (36) away from the permanent magnet (33) is provided with a mounting hole (360) corresponding to the mounting post (371). The magnetic cap (37) is provided at the end of the bushing (36) away from the permanent magnet (33) by the cooperation of the mounting post (371) and the mounting hole (360).

2. An electromagnetic component, characterized in that, include: The electromagnet as described in claim 1; A toggle sleeve (31) is provided, and the coil frame (32) is disposed inside the toggle sleeve (31); The clutch sleeve (35) is movably connected to the actuating sleeve (31), and the bushing (36) is slidably connected inside the clutch sleeve (35); The clutch sleeve (35) is provided with a ball groove (351) connecting the actuating sleeve (31) and the bushing (36). A movable ball (38) is provided in the ball groove (351). When the coil is energized, it generates a magnetic field, causing the permanent magnet (33) to retract into the coil frame (32), thereby driving the bushing (36) to push the ball (38) to abut against the actuating sleeve (31), so that the clutch sleeve (35) and the actuating sleeve (31) are relatively fixed.

3. The electromagnetic component according to claim 2, characterized in that, The bushing (36) is provided with a ramp (361) corresponding to the ball groove (351). The thickness of the ramp (361) gradually decreases towards the permanent magnet (33). By driving the bushing (36), the thickness of the part of the ramp (361) that contacts the ball (38) increases, so as to push the ball (38) to abut against the actuating sleeve (31).

4. A smart lock cylinder, characterized in that, include: The electromagnetic component (3) as described in claim 2 or 3, wherein the actuating sleeve (31) is used to actuate the locking tongue; The door inner module (2) is used to drive the toggle sleeve (31) to actuate the latch from the inside of the door; The external module (1) is connected to the clutch sleeve (35) by its rotating part. The external module (1) is used to start the verification equipment. When the verification equipment successfully verifies the device, the coil is energized to generate a magnetic field.

5. The smart lock cylinder according to claim 4, characterized in that, Also includes: The brush assembly (4) is used to maintain the current on / off state when the coil rotates.

6. The smart lock cylinder according to claim 5, characterized in that, The brush assembly (4) includes a conductive ring (42) and a brush (43). The conductive ring (42) is electrically connected to the electrodes of the coil and can rotate with the actuating sleeve (31). The brush (43) is used to conduct the current from the power supply (44) to the conductive ring (42).

7. The smart lock cylinder according to claim 6, characterized in that, The brush assembly (4) also includes a base (41) connected to the actuating sleeve (31), and the conductive ring (42) is sleeved on the base (41) to rotate with the actuating sleeve (31).

8. The smart lock cylinder according to any one of claims 4 to 7, characterized in that, The door module (1) includes a door lock shell (12) and a door handle (11). The door lock shell (12) is connected to the electromagnetic component (3). The door handle (11) is movably connected to the door lock shell (12). The door handle (11) is the rotating part of the door module (1).

9. The smart lock cylinder according to any one of claims 4 to 7, characterized in that, The actuating sleeve (31) is provided with a connecting shaft (311) at one end facing the door inner module (2). The rotating part of the door inner module (2) is connected to the connecting shaft (311), so that the actuating sleeve (31) can be driven to actuate the latch through the door inner module (2).

10. The smart lock cylinder according to claim 9, characterized in that, The door module (2) includes a door lock shell (22) and a door handle (21). The door lock shell (22) is connected to the electromagnetic component (3). The door handle (21) is movably connected to the door lock shell (22). The door handle (21) is the rotating part of the door module (2).

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