Electric telescopic device capable of being used for driving locking mechanism

Abstract

The utility model discloses an electric telescopic device capable of being used for driving a locking mechanism, which comprises a shell forming a cavity; the like magnetic poles of the two groups of permanent magnets are opposite, and the two groups of permanent magnets are arranged in the cavity and are fixedly connected with the shell; the coil assembly is arranged in the cavity and comprises a coil and a soft magnet, and the coil and the soft magnet are fixedly connected and can move between the two groups of permanent magnets; an interlayer is arranged between the coil end and the opposite permanent magnet magnetic pole, and the thickness of the interlayer is less than 1.6 mm; the distance between the end of the soft magnet and at least one opposite permanent magnet pole is greater than the thickness of the interlayer; the rod-shaped body is fixedly connected with the coil assembly and can axially move along the shell 4; the non-electric intelligent lock has the advantages that power consumption is low and is smaller than 10% of that of a traditional motor, energy is saved, even a battery is not used for supplying power, the locking mechanism can be driven only through wireless radiation micro energy of the NFC function of a mobile phone, and the non-electric intelligent lock is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of push-pull electromagnet technology, specifically relating to an electric telescopic device that can be used to drive a locking mechanism. Background Technology

[0002] Smart locks are becoming increasingly widely used, but they still have significant drawbacks. Currently, smart locks are battery-powered, requiring frequent battery replacements or recharging. One major reason is the high power consumption of the components driving the locking mechanism. This component is powered by a motor, which uses a set of components to reduce high-speed rotation and convert the rotational motion into linear motion of a telescopic rod, driving a pin, block, or pressure plate to complete the locking or unlocking action. This method results in a long power consumption time for the motor to complete one action, approximately 0.3-0.5 seconds, and a large current draw, as the starting current from power-on to stable rotation is particularly high. Patents with announcement numbers CN2194027Y and CN2273452Y utilize a telescopic device to switch the switch state, and their structure is very similar to the device structure of this utility model. Their purpose is merely to save the power consumption of traditional push-pull electromagnets maintaining the open or closed state; however, the power consumption for switching the open or closed state is very high, even greater than the power consumption of the motor driving the locking mechanism.

[0003] To address the problem of high power consumption in existing technologies, this utility model proposes an electric telescopic device that can be used to drive a locking mechanism. Utility Model Content

[0004] To address the high power consumption problem mentioned in the background section, this utility model provides the following technical solution:

[0005] An electrically operated telescopic device for driving a locking mechanism includes:

[0006] The shell forms a chamber;

[0007] The permanent magnets are located in the cavity. There are two sets of permanent magnets, which are fixedly connected to the shell. The same magnetic poles of the two sets of permanent magnets are opposite each other.

[0008] A coil assembly, located within a cavity, is an actuating component, comprising a coil and a soft magnet. The coil and the soft magnet are fixedly connected and can move between two sets of permanent magnets. A spacer is provided between the end of the coil and the opposite permanent magnet pole, the thickness of which is less than 1.6 mm. The distance between the end of the soft magnet and at least one opposite permanent magnet pole is greater than the thickness of the spacer.

[0009] The rod-shaped body is fixedly connected to the coil assembly and can move freely along the four axes of the housing.

[0010] Preferably, the coil assembly serves as the actuating component, and the permanent magnet serves as the fixing component. When the coil is energized, the coil assembly drives the rod-shaped body to move. The like magnetic poles of the two permanent magnets face each other and are respectively set at both ends inside the housing. The like magnetic poles facing each other mean that the magnetic poles of the two permanent magnets facing each other are both S poles or both are N poles, and they are placed in a mutually repulsive manner.

[0011] Preferably, the shells that are fixedly connected to the permanent magnets are provided with a third through hole on their opposite surfaces, through which the rod-shaped body can pass.

[0012] Preferably, the coil assembly can move along the housing axis between the two sets of permanent magnets;

[0013] An electrically operated telescopic device for driving a locking mechanism includes:

[0014] The shell forms a chamber;

[0015] The coil assembly, located in the cavity, includes a coil and a soft magnet. The coil and the soft magnet are fixedly connected. There are two sets of coil assemblies, which are fixedly connected to the housing. When the coil is energized, the same magnetic poles of the two sets of coils are opposite each other.

[0016] A permanent magnet is disposed in the cavity and can move between two sets of coil assemblies; a partition is provided between the permanent magnet pole and the opposite coil end, the thickness of the partition being less than 1.6 mm; the distance between the permanent magnet pole and at least one opposite soft magnet end is greater than the thickness of the partition.

[0017] The rod-shaped body is fixedly connected to the permanent magnet and can move freely along the four axes of the shell.

[0018] Preferably, the coil assembly serves as a fixed component, and the permanent magnet serves as an actuating component. The permanent magnet drives the rod-shaped body to move. The two sets of coil assemblies have the same magnetic poles facing each other and are respectively set at both ends inside the housing. The same magnetic poles facing each other means that when the coil is energized, the magnetic poles facing each other in the two coil assemblies are both S poles or both are N poles, and they are placed in a mutually repulsive manner.

[0019] Preferably, the housing surfaces that are fixedly connected to the coil assembly are provided with a third through hole, through which the rod-shaped body can pass.

[0020] Preferably, the coil assembly further includes a coil housing, the coil is disposed inside the coil housing, the coil housing is provided with two first channels, the first channels are aligned with the axial direction of the chamber; the telescopic device further includes two guide rails disposed inside the chamber, the guide rails are fixedly connected to the housing, the guide rails are aligned with the axial direction of the chamber, the guide rails pass through the corresponding first channels, the coil assembly can slide freely along the guide rails, the axial direction of the guide rails is the same as the running trajectory of the coil assembly.

[0021] Preferably, the permanent magnet can move between the two sets of coil assemblies along the axial direction of the housing;

[0022] Preferably, the soft magnet is a soft magnetic core, which is located inside the coil. The soft magnetic core has a first through hole, and the rod-shaped body passes through the first through hole.

[0023] Preferably, the soft magnet is a soft magnetic ring, the coil passes through the soft magnetic ring, and the rod-shaped body is fixedly connected to the coil.

[0024] Preferably, the permanent magnet has a second through hole, through which the rod-shaped body passes.

[0025] Preferably, it also includes a connector. The housing has a slot that is on the same trajectory as the rod. The rod is located outside the housing. The connector passes through the slot. One end of the connector is fixedly connected to the actuator, and the other end is fixedly connected to the rod.

[0026] Preferably, the shape of the actuator matches the housing cavity.

[0027] Preferably, the partition is fixedly connected to the side of the coil near the permanent magnet, or the partition is fixedly connected to the side of the permanent magnet near the coil.

[0028] Preferably, the soft magnetic ring is a circular magnetic ring, a square magnetic ring, or an anisotropic magnetic ring.

[0029] Preferably, the end of the soft magnet is recessed into the end of the coil.

[0030] Preferably, the surface of the permanent magnet opposite to the coil assembly has a groove.

[0031] Preferably, the telescopic device further includes a pin, a block, or a pressure plate, and the top of the rod-shaped body is fixedly connected to the pin, the block, or the pressure plate.

[0032] Preferably, the partition is a rubber pad, a plastic sheet, or the walls at both ends of the coil frame.

[0033] Preferably, the rod-shaped body includes a first rod and a first elastic body, one end of the first elastic body is fixedly connected to the end of the first rod, and the other end is fixedly connected to a pin, a plug, or a pressure plate.

[0034] Preferably, the first elastic body is a spring or a rubber elastic element.

[0035] Preferably, in order to be more directly applicable to the locking mechanism, the top shape of the rod is directly set to the shape of a pin, a block, or a pressure plate; or, in order to be more convenient to apply to the locking mechanism, the head shape of the rod is set to a shape suitable for connecting a spring, a pin, a block, or a pressure plate.

[0036] Preferably, the electric telescopic device includes a first elastic body and a pin, a block, or a pressure plate, wherein one end of the first elastic body is connected to the top of the rod-shaped body, and the other end is connected to the pin, the block, or the pressure plate. The connection method can be a fixed connection or a detachable connection.

[0037] Preferably, it further includes a circuit module for controlling the energizing time of the coil. The circuit module includes a controller and a switching circuit, wherein:

[0038] When the circuit module is powered by a battery, the controller is electrically connected to the switching circuit; the switching circuit is electrically connected to the coil in the coil assembly, and the controller controls the energizing time of the coil through the switching circuit according to the stored time.

[0039] When this device is used in a lockless system, the circuit module is powered by the collected wireless radiation energy. The circuit module also includes an energy storage module, which includes an energy storage capacitor. The energy storage module is electrically connected to the controller. The switching circuit is electrically connected to the controller, the energy storage capacitor, and the coil in the coil assembly. During operation, the wireless radiation energy charges the energy storage capacitor through the energy storage module. The controller checks the charging process of the energy storage capacitor. When the voltage of the energy storage capacitor reaches a threshold, the switching circuit starts the energy storage capacitor to discharge the coil in the coil assembly.

[0040] The energizing time of the coil is less than the total operating time of the actuator switching between two stable positions, enabling the actuator to complete the switching between two stable positions by means of inertia and the attractive force between the soft magnet and the permanent magnet.

[0041] Preferably, the electric telescopic device is used in the field of locks.

[0042] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention can replace the components driving the locking mechanism in existing technologies, thereby reducing the power consumption of smart locks, enhancing battery life, saving energy, and even eliminating the need for battery power altogether. The locking mechanism can be driven solely by the low-energy wireless radiation from the NFC function of a mobile phone, achieving a power-free smart lock. This invention significantly reduces driving power consumption, and further improvements to the connecting pins, blocks, or pressure plates make them more suitable for driving the locking mechanism, significantly reducing the power consumption of smart locks.

[0043] 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 drawings and embodiments are only a part of the drawings and embodiments of the present utility model, and not all of the drawings and embodiments. Based on the drawings and embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. The illustrative drawings and descriptions of the utility model embodiments are used to explain this application and do not constitute an improper limitation of this application. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of this utility model;

[0045] Figure 2 This is a schematic diagram of the structure of this utility model;

[0046] Figure 3 This is a schematic diagram of the structure of this utility model;

[0047] Figure 4 This is a schematic diagram of the structure of this utility model;

[0048] Figure 5 This is a schematic diagram of the structure of this utility model;

[0049] Figure 6 This is a schematic diagram of the structure of this utility model;

[0050] Figure 7 This is a schematic diagram of the structure of this utility model;

[0051] Figure 8 This is a schematic diagram of the structure of this utility model;

[0052] Figure 9 This is a schematic diagram of the structure of this utility model;

[0053] Figure 10 This is a schematic diagram of the circuit module of this utility model when the power source is a battery;

[0054] Figure 11 This is a schematic diagram of the circuit module when the power source of this utility model is wireless radiated energy;

[0055] Figure 12 This is a schematic diagram of the application structure of this utility model;

[0056] Figure 13 This is a schematic diagram of the application structure of this utility model;

[0057] Figure 14 This is a schematic diagram of the application structure of this utility model;

[0058] Figure 15 This is a schematic diagram of the application structure of this utility model.

[0059] In the picture:

[0060] 11-Coil; 110-Coil end; 111-Coil channel; 12-Soft magnet; 120-Soft magnet end; 121-First through hole; 2-Permanent magnet; 20-Permanent magnet pole; 21-Second through hole; 22-Groove; 3-Ring-shaped body; 31-First rod-shaped body; 32-First elastic body; 33-Pin; 34-Block; 35-Top pressure plate; 4-Shell; 41-Third through hole; 5-Spacing plate Layer; 601-Active ring; 602-Passive ring; 603-Main slot; 604-Second rod-shaped body; 605-Linkage slot; 606-Second elastic body; 611-Slot; 612-Lock tongue; 613-Pulley; 621-First opening; 622-First locking part; 623-Second opening; 624-Second locking part; 7-Connector; 8-Guide rail; 9-Coil housing; 91-First channel. Detailed Implementation

[0061] Example 1:

[0062] See attached document Figure 1 ,

[0063] An electric telescopic device for driving a locking mechanism includes a housing 4 forming a chamber, two permanent magnets 2, a coil assembly, and a rod-shaped body 3;

[0064] Shell 4 forms a chamber;

[0065] The permanent magnet 2 is located inside the cavity and is fixedly connected to the shell 4, with the same magnetic poles of the two sets of permanent magnets 2 facing each other;

[0066] The coil assembly, which serves as an actuating element, is located within the cavity. The coil assembly includes a coil 11 and a soft magnet 12, which are fixedly connected. The coil assembly can move along the axial direction of the housing 4 between two sets of permanent magnets 2. A spacer 5 with a thickness of 0.5 mm is provided between the coil end 110 and the opposite permanent magnet pole 20. The spacer 5 and the permanent magnet 2 are fixedly connected to the side of the coil 11. The soft magnet 12 is a soft magnetic core, which is located inside the coil 11 and the soft magnet end 120 is recessed into the coil end 110. The distance between the soft magnet end 120 and the opposite permanent magnet pole 20 is greater than the thickness of the spacer 5.

[0067] The rod-shaped body 3 is a hard plastic rod and is fixedly connected to the coil assembly. It can move axially along the housing 4 inside and outside the housing 4.

[0068] In this design, the coil assembly acts as the actuating component, and the permanent magnet 2 acts as the fixing component. When the coil 11 is energized, the coil assembly drives the rod-shaped body 3 to move. The two permanent magnets 2 have the same magnetic poles facing each other and are symmetrically arranged at both ends of the housing 4. The same magnetic poles facing each other means that the magnetic poles of the two permanent magnets 2 facing each other are either S poles or both are N poles, and they are placed in a way that repels each other.

[0069] The permanent magnet 2 is provided with a second through hole 21, and the shell 4, which is fixedly connected to the permanent magnet 2, is provided with a third through hole 41 on each of the opposite surfaces. The rod-shaped body 3 can pass through the second through hole 21 and the third through hole 41.

[0070] Example 2:

[0071] See attached document Figure 2 Unlike Embodiment 1, the partition 5 is fixedly connected to the side of the coil 11 near the permanent magnet 2, and the thickness of the partition 5 is 1mm.

[0072] Example 3:

[0073] See attached document Figure 3 Unlike Embodiment 1, the soft magnet 12 is a soft magnetic ring, the coil 11 passes through the soft magnetic ring, and the soft magnetic ring is fixedly connected to the coil 11. The rod-shaped body 3 is fixedly connected to the coil 11. The soft magnetic ring is a circular magnetic ring, a square magnetic ring, or an anisotropic magnetic ring.

[0074] Example 4:

[0075] See attached document Figure 4 An electric telescopic device for driving a locking mechanism includes a housing 4, two sets of coil assemblies, a permanent magnet 2, and a rod-shaped body 3, wherein...

[0076] Shell 4 forms a chamber;

[0077] The coil assembly is located in the cavity and includes a coil 11 and a soft magnet 12. The coil 11 and the soft magnet 12 are fixedly connected. There are two sets of coil assemblies, which are fixedly connected to the housing 4. When the coil 11 is energized, the same magnetic poles of the two sets of coils 11 are opposite each other.

[0078] The permanent magnet 2 is located inside the cavity and can move along the axial direction of the housing 4 between the two sets of coil assemblies as an actuating element; a partition 5 is provided between the permanent magnet pole 20 and the opposite coil end 110, and the partition 5 and the coil 11 are fixedly connected to the side near the permanent magnet 2, and the thickness of the partition 5 is 1.5mm; the soft magnet 12 is a soft magnetic core, which is located inside the coil 11, and the distance between the permanent magnet pole 20 and the opposite soft magnetic end 120 is greater than the thickness of the partition 5;

[0079] The rod-shaped body 3 is a plastic rod and is fixedly connected to the permanent magnet 2, and can move freely inside and outside the housing 4 along the axial direction of the housing 4;

[0080] The coil assembly serves as a fixed component, and the permanent magnet 2 serves as an actuating component. The permanent magnet 2 drives the rod-shaped body 3 to move. The two sets of coil assemblies with the same magnetic poles face each other and are symmetrically arranged at both ends of the housing 4. The same magnetic poles facing each other means that when the coil 11 is energized, the magnetic poles facing each other in the two coil assemblies are both S poles or both are N poles, and they are placed in a mutually repulsive manner.

[0081] The soft magnetic core is provided with a first through hole 121, and the housing 4, which is fixedly connected to the coil assembly, is provided with a third through hole 41 on each opposite side. The rod-shaped body 3 can pass through the first through hole 121 and the third through hole 41.

[0082] Example 5:

[0083] See attached document Figure 5 Unlike embodiment 4, the soft magnet 12 is a soft magnetic ring, the coil 11 passes through the soft magnetic ring, the soft magnetic ring and the coil 11 are fixedly connected, the coil 11 is provided with a coil channel 111, and the rod-shaped body 3 can pass through the coil channel 111 and the third through hole 41.

[0084] Example 6:

[0085] See attached document Figure 6 Unlike Embodiment 1, the rod-shaped body 3 includes a first rod-shaped body 31, a first elastic body 32 and a pin 33. One end of the first elastic body 32 is fixedly connected to the top of the first rod-shaped body 31, and the other end is fixedly connected to the pin 33. The first rod-shaped body 31 can pass through the first through hole 121 and the third through hole 41.

[0086] Example 7:

[0087] See attached document Figure 7 An electric telescopic device for driving a locking mechanism includes a housing 4, two sets of coil assemblies, a permanent magnet 2, and a rod-shaped body 3, wherein...

[0088] Shell 4 forms a chamber;

[0089] The coil assembly is located in the cavity and includes a coil 11 and a soft magnet 12. The coil 11 and the soft magnet 12 are fixedly connected. There are two sets of coil assemblies, which are fixedly connected to the housing 4. When the coil 11 is energized, the same magnetic poles of the two sets of coils 11 are opposite each other.

[0090] The permanent magnet 2 is located in the cavity and can move along the axis of the housing 4 between the two sets of coil assemblies as an actuating element; a partition 5 is provided between the permanent magnet pole 20 and the opposite coil end 110, the partition 5 and the coil 11 are fixedly connected to the side of the permanent magnet 2, and the thickness of the partition 5 is 1mm; the soft magnet 12 is a soft magnetic core, which is located inside the coil 11, and the distance between the permanent magnet pole 20 and the opposite soft magnetic end 120 is greater than the thickness of the partition 5;

[0091] The rod-shaped body 3 is a plastic rod located outside the housing 4 and is fixedly connected to the permanent magnet 2. It can move freely outside the housing 4. The housing 4 has a slot, the length of which is the same as the axis of the housing 4. The slot and the movement trajectory of the rod-shaped body 3 are the same, and the movement direction of the rod is the same as the axis of the rod. The telescopic device also includes a connector 7, which passes through the slot. One end of the connector 7 is fixedly connected to the permanent magnet 2, and the other end is fixedly connected to the rod-shaped body 3.

[0092] The coil assembly serves as a fixed component, and the permanent magnet 2 serves as an actuating component. The shape of the actuating component matches the cavity of the housing. The permanent magnet 2 drives the rod-shaped body 3 to move. The two sets of coil assemblies have the same magnetic poles facing each other and are respectively set at both ends inside the housing 4. The same magnetic poles facing each other means that when the coil 11 is energized, the magnetic poles facing each other in the two coil assemblies are both S poles or both are N poles. They are placed in a way that repels each other.

[0093] Example 8:

[0094] See attached document Figure 8 An electric telescopic device for driving a locking mechanism includes a housing 4 forming a chamber, two permanent magnets 2, a coil assembly, and a rod-shaped body 3.

[0095] Shell 4 forms a chamber;

[0096] The permanent magnet 2 is located inside the cavity and is fixedly connected to the housing 4. The same magnetic poles of the two sets of permanent magnets 2 are opposite each other. One of the permanent magnets 2 has a groove 22 on the surface opposite to the coil assembly, while the other permanent magnet 2 does not have a groove 22.

[0097] The coil assembly, acting as an actuator, is located within the cavity. The coil assembly includes a coil 11 and a soft magnet 12, which are fixedly connected. The coil assembly can move along the axial direction of the housing 4 between two sets of permanent magnets 2. A spacer 5 is provided between the coil end 110 and the opposite permanent magnet pole 20. The thickness of the spacer 5 is 0.3 mm. The spacer 5 and the permanent magnet 2 are fixedly connected to the side near the coil 11. The spacer 5 is a rubber pad or a plastic sheet. The soft magnet 12 is a soft magnetic core. The soft magnet 12 is inside the coil 11, and the soft magnet end 120 is flush with the coil end 110.

[0098] The rod-shaped body 3 is fixedly connected to the coil assembly and can move freely inside and outside the housing 4. The permanent magnet 2 is provided with a second through hole 21, and the housing 4, which is fixedly connected to the permanent magnet 2, is provided with a third through hole 41 on each opposite side. The rod-shaped body 3 can pass through the second through hole 21 and the third through hole 41 in sequence.

[0099] In this structure, the coil assembly acts as the actuating component, and the permanent magnet 2 acts as the fixing component. When the coil 11 is energized, the coil assembly drives the rod-shaped body 3 to move. The two permanent magnets 2 have the same magnetic poles facing each other and are respectively set at both ends inside the housing 4. The same magnetic poles facing each other means that the magnetic poles of the two permanent magnets 2 facing each other are both S poles or both are N poles. They are placed in a way that repels each other.

[0100] Example 9:

[0101] See attached document Figure 9 Unlike embodiment 8, the permanent magnet 2 without groove 22 is provided with a second through hole 21, and the housing 4 is provided with a third through hole 41. The rod-shaped body 3 can pass through the second through hole 21 and the third through hole 41 in sequence. The coil assembly also includes a coil housing 9, and the coil is disposed inside the coil housing 9. Two first channels 91 are symmetrically arranged on the edge of the coil housing 9. The first channels 91 are aligned with the axial direction of the cavity. In this embodiment, the walls at both ends of the coil housing 9 are equivalent to the partition in embodiment 8. The telescopic device also includes two guide rails 8 disposed in the cavity. The guide rails 8 are fixedly connected to the housing 4. The guide rails 8 are aligned with the axial direction of the cavity. The two guide rails 8 pass through the corresponding first channels 91 respectively. The coil assembly can slide freely along the guide rails 8. The axial direction of the guide rails 8 is the same as the running trajectory of the coil assembly.

[0102] One end of the wire of coil 11 is electrically connected to one of the guide rails 8 at the corresponding first channel 91 via a brush, and the other end is electrically connected to the second guide rail 8 at the corresponding first channel 91 via a brush, thereby energizing coil 11 through the two guide rails 8.

[0103] Example 10:

[0104] See attached document Figure 10 The structural components of the electric telescopic device can be any one of the embodiments 1-9. It also includes a circuit module for controlling the energizing time of the coil 11. The circuit module includes a controller and a switching circuit.

[0105] The drive circuit module is powered by a battery, and the controller is electrically connected to the switching circuit. The switching circuit is electrically connected to the coil 11. The controller controls the energizing time of the coil 11 through the switching circuit according to a set time. The energizing time of the coil 11 is less than the entire operation time of the switching between the two stable positions of the actuator.

[0106] Example 11:

[0107] See attached document Figure 11 The structural components of the electric telescopic device can be any one of the embodiments 1-9. It also includes a circuit module for controlling the energizing time of the coil 11. The circuit module includes a controller and a switching circuit.

[0108] The power supply for the drive circuit module comes from the collected wireless radiation energy. The circuit module also includes an energy storage module, which includes an energy storage capacitor. The energy storage module is electrically connected to the controller. The switching circuit is electrically connected to the controller, the energy storage capacitor, and the coil 11. During operation, the controller checks the charging process of the energy storage capacitor. When the voltage of the energy storage capacitor reaches a threshold, the controller starts the energy storage capacitor to discharge the coil 11 through the switching circuit. The energizing time of the coil 11 is less than the entire operation time of the switching between the two stable positions of the actuator.

[0109] Application Example 1:

[0110] This embodiment provides an application scheme for Embodiment 6, and its application process is as follows:

[0111] See attached document Figure 12 The first locking part 622 is a fixed part that cannot be rotated, and the second locking part 624 is a movable part that can be rotated. When the first rod-shaped body 31 is extended, the locking mechanism is positioned to lock, that is, the first opening 621 and the second opening 623 are aligned. The first rod-shaped body 31 presses the first elastic member 32 to push the pin 33 through the first opening 621 and insert it into the second opening 623, so that the second locking part 624 cannot rotate, thus completing the locking action.

[0112] Application Example 2:

[0113] See attached document Figure 13 The telescopic device differs from Embodiment 1 in that the rod-shaped body 3 includes a first rod-shaped body 31 and a blocking block 34. The top of the first rod-shaped body 31 is fixedly connected to the blocking block 34. The application process is as follows:

[0114] By manually inserting the head of the latch 612 into the groove 611 using the lever 613, the rod 3 extends out and pushes the block 34 into the space vacated at the tail of the latch 612. As a result, the head of the latch 612 can no longer be removed from the groove 611 by manually inserting the lever 613, thus completing the locking action.

[0115] Application Example 3:

[0116] Example of an application of Example 6:

[0117] See attached document Figure 14The lock body includes a top pressure plate 35, an active ring 601 with a main slot 603, a passive ring 602 with a linkage slot 605, a second rod-shaped body 604, and a second elastic element 606. The second elastic element 606 is a spring and is located between the top pressure plate 35 and the passive ring 602. The top of the pin 33 is fixedly connected to the top pressure plate 35. The active ring 601 can be manually rotated. The passive ring 602 can only be linked with the active ring 601 when the second rod-shaped body 604 simultaneously passes through the main slot 603 and the linkage slot 605 to complete the unlocking action. The working process is as follows:

[0118] When the first rod-shaped body 31 extends, the locking mechanism is positioned to facilitate the unlocking action, that is, the main slot 603 and the linkage slot 605 are opposite and connected. The first rod-shaped body 31 presses the first elastic body 32 to push the pin 33 and the top pressure plate 35, and then presses the second elastic body 606 to push the second rod-shaped body 604 to insert into the main slot 603 through the linkage slot 605. The active ring 601 is rotated to complete the unlocking action.

[0119] Application Example 4:

[0120] Application example of Example 8:

[0121] See attached document Figure 15 The lock body includes a top pressure plate 35, an active ring 601 with a main slot 603, a passive ring 602 with a linkage slot 605, a second rod-shaped body 604, and a second elastic element 606. The second elastic element 606 is a spring and is disposed between the top pressure plate 35 and the passive ring 602. The top of the rod-shaped body 604 is fixedly connected to the top pressure plate 35. The active ring 601 can be rotated by a handle. The passive ring 602 can only be linked with the active ring 601 to complete the unlocking action when the second rod-shaped body 604 simultaneously passes through both the main slot 603 and the linkage slot 605. Working process:

[0122] When the rod-shaped body 3 extends, the locking mechanism is positioned to unlock, that is, the main slot 603 and the linkage slot 605 are opposite and connected. The rod-shaped body 3 presses the top pressure plate 35, and then presses the second elastic body 606, pushing the second rod-shaped body 604 to insert into the main slot 603 through the linkage slot 605. The active ring body 601 is rotated to complete the unlocking action.

[0123] When the coil assembly is in a stable position close to the permanent magnet 2 with the groove 22, the distance between the soft magnetic end 120 and the opposite permanent magnet pole 20 is greater than the thickness of the partition 5, so as to moderately reduce the holding force. When the coil assembly is in a stable position close to the permanent magnet 2 without the groove 22, the distance between the soft magnetic end 120 and the opposite permanent magnet pole 20 is equal to the thickness of the partition 5, and the holding force is very large, which is not conducive to saving power. However, when the body 3 presses against the second elastic body 606, the elastic force is opposite to the holding force, and the force to maintain the stable state is equal to the difference between the holding force and the elastic force. Therefore, the repulsive force that changes the stable state is very small, and this embodiment can still reduce power consumption.

[0124] The working principle and usage process of this utility model:

[0125] The coil assembly is the actuating component, and the permanent magnet 2 is the fixed component at both ends of the housing 4 (hereinafter referred to as end A and end B): When the coil 11 is de-energized, the actuating component will have two stable positions due to the magnetic attraction between the soft magnet 12 in the coil assembly and the permanent magnet 2 (when the actuating component and the fixed component on each side are attracted and stable, it is called the stable position). When the coil assembly is close to end A of the outer shell, the attractive force of the fixing part at end A is greater than that at end B. The actuator moves towards end A. Because the magnitude of the magnetic attraction is inversely proportional to the square of the distance between the soft magnetic end 120 and the corresponding permanent magnet pole 20, the attractive force of the fixing part at end A increases, while the attractive force of the fixing part at end B decreases until the actuator is very close to the fixing part at end A. At this point, the attractive force at end A reaches its maximum (i.e., the holding force). The holding force is used to keep the actuator in a position very close to the fixing part at end A (called the stable position at end A). When a reverse driving current is applied to the coil 11, because the driving current is relatively small, the magnetic field strength formed by the coil 11 at the soft magnetic 12 is much smaller than that formed by the permanent magnet 2. Therefore, the magnitude and direction of the holding force remain basically unchanged. Simultaneously, when energized, coil 11 forms an electromagnet, generating a repulsive or attractive magnetic force between coil 11 and permanent magnet 2. The magnitude of the magnetic force is directly proportional to the driving current of coil 11, and inversely proportional to the square of the distance between the corresponding ends of permanent magnet pole 20 and coil 11. Since the currents are reversed and the magnetic poles of the fixed parts at ends A and B are set opposite each other, the actuating component generates a repulsive force on the fixed part at end A and an attractive force on the fixed part at end B. When the resultant force of the push and pull is greater than the holding force, the actuating component moves towards end B, and the attractive force generated by soft magnet 12 and permanent magnet 2 at end B becomes stronger and stronger, while the attractive force generated by soft magnet 12 and permanent magnet 2 at end A becomes weaker and weaker, until the actuating component is very close to the fixed part at end B. At this point, even if coil 11 is de-energized, the holding force of soft magnet 12 and permanent magnet 2 can still maintain the position of the actuating component very close to the fixed part at end B (called the stable position at end B).

[0126] When the actuator is located at one of the A or B ends inside the housing, the actuator and the fixed part will be close together. In order to prevent the permanent magnet 2 from colliding with the coil 11 and damaging the device, a partition 5 is provided between the permanent magnet pole 20 and the corresponding coil end 110. The partition 5 can be a rubber pad, a plastic sheet, the walls at both ends of the coil housing 9, or other structures with isolation function.

[0127] One of the key features for reducing drive power consumption is that the thickness of the spacer 5 should be less than 1.6 mm. This is because when the coil 11 is energized in reverse, a repulsive force is generated between the closely spaced permanent magnet 2 and the coil assembly. The magnitude of the force is proportional to the drive current of the coil 11 and inversely proportional to the square of the thickness of the spacer 5 between the permanent magnet pole 20 and the corresponding coil end 110. Therefore, in order to generate a certain amount of repulsive force, the smaller the thickness of the spacer 5, the smaller the drive current required, and the more energy-efficient it is.

[0128] In addition, when the actuator is at one of the A or B ends inside the housing, the actuator and the fixed part will be closely close due to the magnetic attraction between the permanent magnet 2 and the soft magnet 12 in the coil assembly. At this time, the attraction force reaches its maximum (holding force). Even if the power is cut off, the holding force can still maintain a close proximity (called a stable position). The magnitude of the holding force is inversely proportional to the square of the distance between the corresponding ends of the permanent magnet pole 20 and the soft magnet 12. When the coil 11 is energized in the reverse direction, the actuator can only move in the reverse direction when the repulsive force generated is greater than the holding force. Therefore, the smaller the holding force, the smaller the reverse drive current that generates the repulsive force, and the more energy-efficient it is.

[0129] The second key feature for reducing drive power consumption is that the permanent magnet pole 20 and the corresponding end of the soft magnet 12 maintain a certain distance, and the distance should be greater than the thickness of the partition layer 5, so as to reduce the holding force, as long as it can meet the minimum holding force requirement of the application scenario.

[0130] The third key feature for reducing drive power consumption is that the energizing time of coil 11 is less than the total operating time of the actuator switching between two stable positions. This is because when coil 11 is energized in reverse, the actuator moves from end A to end B. Since the actuator is very close to the fixed part at end A when it is first energized, the repulsive force between the actuator and the fixed part at end A is extremely large. It only takes a short time for the actuator to gain enough momentum. When the power is turned off, the actuator continues to move towards end B by inertia. When it moves closer to end B, the holding force between the actuator and the fixed part at end B is greater than the holding force between the actuator and the fixed part at end A. The actuator continues to move towards end B until it is very close to the fixed part at end B. Therefore, coil 11 does not need to be energized throughout the entire movement of the actuator, and the required power consumption is very small.

[0131] When the permanent magnet 2 is the actuating component and the coil assembly is the fixed component at both ends of the housing 4, its working principle and the principle of reducing power consumption are the same as when the permanent magnet 2 is the fixed component and the coil assembly is the actuating component at both ends of the housing 4.

[0132] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0133] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0134] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. An electric telescopic device that can be used to drive a locking mechanism, characterized in that, include The shell (4) forms a chamber; Permanent magnet (2), disposed in the cavity, the permanent magnet is in two sets and is fixedly connected to the shell, the same magnetic poles of the two sets of permanent magnets are opposite each other; A coil assembly, disposed within a cavity, includes a coil (11) and a soft magnet (12), the coil (11) and the soft magnet (12) being fixedly connected and movable between two sets of permanent magnets (2); a partition (5) is provided between the coil end (110) and the opposite permanent magnet pole (20), the thickness of the partition being less than 1.6 mm; the distance between the soft magnet end (120) and at least one opposite permanent magnet pole (20) is greater than the thickness of the partition (5); The rod-shaped body (3) is fixedly connected to the coil assembly and can move along the housing 4 axis.

2. An electric telescopic device for driving a locking mechanism according to claim 1, characterized in that: The coil assembly also includes a coil housing (9), the coil (11) is disposed inside the coil housing (9), and the coil housing (9) is provided with two first channels (91), the first channels being axially aligned with the chamber; The telescopic device also includes two guide rails (8) disposed in the cavity. The guide rails (8) are fixedly connected to the housing (4). The axial direction of the guide rails and the cavity is consistent. The guide rails (8) pass through the corresponding first channel (91). The coil assembly can slide freely along the guide rails. The axial direction of the guide rails (8) is the same as the running trajectory of the coil assembly.

3. An electric telescopic device that can be used to drive a locking mechanism, characterized in that, include The shell (4) forms a chamber; A coil assembly is located in the cavity and includes a coil (11) and a soft magnetic body (12). The coil (11) and the soft magnetic body (12) are fixedly connected. The coil assembly consists of two sets and is fixedly connected to the housing (4). When the coil is energized, the same magnetic poles of the two sets of coils are opposite each other. A permanent magnet (2) is disposed in the cavity and can move between two sets of coil assemblies; a partition (5) is provided between the permanent magnet pole (20) and the opposite coil end (110), the thickness of the partition being less than 1.6 mm; The distance between the permanent magnet pole (20) and at least one opposite soft magnet end (120) is greater than the thickness of the partition (5); The rod-shaped body (3) is fixedly connected to the permanent magnet and can move along the axial direction of the shell 4.

4. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that, The soft magnet end (120) is recessed into the coil end (110).

5. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that, The permanent magnet (2) has a groove (22) on the surface opposite to the coil assembly.

6. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that: The telescopic device also includes a pin (33), a block (34), or a top pressure plate (35), the top of the rod being fixedly connected to the pin (33), the block (34), or the top pressure plate (35).

7. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that: The rod-shaped body (3) includes a first rod (31) and a first elastic body (32). One end of the first elastic body (32) is fixedly connected to the end of the first rod (31), and the other end is fixedly connected to a pin (33), a block (34), or a top pressure plate (35).

8. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that: The telescopic device also includes a circuit module for controlling the energizing time of the coil, the circuit module including a controller and a switching circuit; When the power supply for the drive circuit module comes from the battery, the controller is electrically connected to the switching circuit; the switching circuit is electrically connected to the coil (11); the controller controls the energizing time of the coil (11) through the switching circuit according to a set time. When the power supply of the drive circuit module comes from the collected wireless radiation energy, the circuit module also includes an energy storage module, which includes an energy storage capacitor. The energy storage module is electrically connected to the controller. The switching circuit is electrically connected to the controller, the energy storage capacitor, and the coil. During operation, the controller checks the charging process of the energy storage capacitor. When the voltage of the energy storage capacitor reaches a threshold, the controller starts the energy storage capacitor to discharge to the coil through the switching circuit. The energizing time of the coil (11) is less than the total operating time of the two stable positions of the actuator, so that the actuator can complete the switching between the two stable positions of the actuator by means of inertia and the attraction between the soft magnet (12) and the permanent magnet (2).

9. An electric telescopic device for driving a locking mechanism according to any one of claims 1-3, characterized in that, The telescopic device is used in the field of locks.

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