Electric telescopic device capable of being used for driving locking mechanism

Abstract

The invention discloses an electric telescopic device capable of being used for driving a locking mechanism, and the device comprises a housing which forms 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 no battery is needed for power supply, 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] The invention belongs to the technical field of push-pull electromagnets, and in particular relates to an electric telescopic device that can be used to drive a locking mechanism. Background Art

[0002] Smart locks are increasingly being used, but they still have a big flaw: currently, smart locks are powered by batteries, and batteries need to be replaced or charged frequently. One of the main reasons is that the components driving the locking mechanism consume a lot of power. The power source of the components is a motor, which decelerates the high-speed rotation through a set of components, and then converts the rotational motion into the linear motion of the telescopic rod, driving the pin or the block or the top pressure plate to complete the locking or unlocking action. This method consumes a long time for the motor to complete an action, which takes about 0.3 seconds to 0.5 seconds, and the current is large, because each time the motor starts from power-on to stable rotation, the starting current is particularly large. The patents with announcement numbers CN2194027Y and CN2273452Y use telescopic devices to switch the switch state. Their structure is very close to the structure of the device of the present invention. The purpose of the invention is only to save the holding power consumption of the traditional push-pull electromagnet to maintain the open or closed state, but the driving power consumption of switching the open or closed state is very large, which is greater than the power consumption of the motor driving the locking mechanism.

[0003] In order to solve the problem of high power consumption in the prior art, the present invention provides an electric telescopic device that can be used to drive a locking mechanism. Summary of the invention

[0004] In order to solve the problem of high power consumption mentioned in the above background technology, the present invention provides the following technical solutions:

[0005] An electric telescopic device that can be used to drive a locking mechanism includes:

[0006] a housing forming a chamber;

[0007] Permanent magnets are arranged in the chamber, and there are two groups of permanent magnets, which are fixedly connected to the shell, and the same magnetic poles of the two groups of permanent magnets are opposite to each other;

[0008] A coil assembly is arranged in the chamber, is an action part, includes a coil and a soft magnet, the coil and the soft magnet are fixedly connected, and can move between two groups of permanent magnets; a partition is arranged between the coil end and the relative permanent magnet pole, and the thickness of the partition is less than 1.6mm; the distance between the soft magnet end and at least one relative permanent magnet pole is greater than the thickness of the partition;

[0009] The rod-shaped body is fixedly connected to the coil assembly and can move freely along the axial direction of the housing 4.

[0010] Preferably, the coil assembly serves as the moving part and the permanent magnet serves as the fixed part. When the coil is energized, the coil assembly drives the rod-shaped body to move. The like poles of the two permanent magnets are opposite to each other and are respectively arranged at both ends of the shell. The like poles are opposite to each other, which means that the poles facing each other of the two permanent magnets are both S poles or both N poles, and they are placed to repel each other.

[0011] Preferably, the opposite surfaces of the shell fixedly connected to the permanent magnet are provided with interconnected third through holes, and the rod-shaped body can pass through the third through holes;

[0012] Preferably, the coil assembly can move between the two groups of permanent magnets along the axial direction of the housing;

[0013] An electric telescopic device that can be used to drive a locking mechanism includes:

[0014] a housing forming a chamber;

[0015] The coil assembly is arranged in the chamber, and includes a coil and a soft magnetic body. The coil and the soft magnetic body are fixedly connected. The coil assembly consists of two groups, and is fixedly connected to the housing. When the coil is energized, the like magnetic poles of the two groups of coils are opposite to each other.

[0016] A permanent magnet is disposed in the chamber and can move between the two sets of coil assemblies; a partition is disposed between the permanent magnet pole and the opposite coil end, and the thickness of the partition is less than 1.6 mm; the distance between the permanent magnet pole and at least one opposite soft magnetic 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 axial direction of the shell 4.

[0018] Preferably, the coil assembly serves as a fixed part and the permanent magnet serves as an actuating part, and the permanent magnet drives the rod-shaped body to move. The two sets of coil assemblies have like poles facing each other and are respectively arranged at two ends of the shell. The like poles facing each other means that when the coils are energized, the magnetic poles of the two coil assemblies facing each other are both S poles or both N poles, and they are placed to repel each other.

[0019] Preferably, the opposite surfaces of the shell fixedly connected to the coil assembly are provided with interconnected third through holes, and the rod-shaped body can pass through the third through holes;

[0020] Preferably, the coil assembly also includes a coil shell, the coil is arranged in the coil shell, and the coil shell is provided with two first channels, and the axial direction of the first channel is consistent with that of the chamber; the telescopic device also includes two guide rails arranged in the chamber, the guide rails are fixedly connected to the shell, the axial direction of the guide rails is consistent with that of the chamber, the guide rails pass through the corresponding first channels, the coil assembly can slide freely along the guide rails, and 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 magnetic body is a soft magnetic core, which is arranged inside the coil. The soft magnetic core is provided with a first through hole, and the rod-shaped body passes through the first through hole.

[0023] Preferably, the soft magnetic body 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 is provided with a second through hole, and the rod-shaped body passes through the second through hole.

[0025] Preferably, it also includes a connecting piece, the shell is provided with a slot, the slot is the same as the movement trajectory of the rod-shaped body, the rod-shaped body is arranged outside the shell, the connecting piece passes through the slot, one end of the connecting piece is fixedly connected to the actuating piece, and the other end is fixedly connected to the rod-shaped body.

[0026] Preferably, the shape of the actuating member matches the housing chamber.

[0027] Preferably, the partition is fixedly connected to a side of the coil close to the permanent magnet, or the partition is fixedly connected to a side of the permanent magnet close to 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 magnetic body is recessed into the end of the coil.

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

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

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

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

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

[0035] Preferably, in order to be better directly applied to the locking mechanism, the top shape of the rod-shaped body is directly set to the shape of a pin or a block or a top pressure plate, or in order to be more conveniently applied to the locking mechanism, the head shape of the rod-shaped body is set to a shape suitable for connecting a spring or a pin or a block or a top pressure plate.

[0036] Preferably, the electric telescopic device includes a first elastic body, and a pin or a block or a top 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 or the block or the top pressure plate, and the connection method can be a fixed connection or a detachable connection.

[0037] Preferably, it further comprises a circuit module for controlling the energization time of the coil, the circuit module comprises a controller and a switch circuit, wherein:

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

[0039] When the device of the present invention is used for a non-electric lock, the circuit module is powered by the collected wireless radiation energy. The circuit module also includes an energy storage module. The energy storage module includes an energy storage capacitor, wherein 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 at the same time. During operation, the wireless radiation electric energy charges the energy storage capacitor through the energy storage module, and the controller checks the charging process of the energy storage capacitor. When the voltage of the energy storage capacitor reaches a threshold, the energy storage capacitor is started to discharge the coil in the coil assembly through the switching circuit.

[0040] The energizing time of the coil is shorter than the whole process action time of the switching between two stable positions of the actuating member, so that the actuating member can complete the switching between two stable positions of the actuating member by means of inertia and the attraction between the soft magnet and the permanent magnet.

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

[0042] Compared with the prior art, the beneficial effects of the present invention are: the present invention can replace the components of the prior art driving the locking mechanism, so that the power consumption of the smart lock is reduced, the endurance is enhanced, and energy is saved, and even no battery power is required at all. Only the wireless radiation micro-energy of the NFC function of the mobile phone can drive the locking mechanism, thereby realizing a non-powered smart lock. The present invention greatly reduces the driving power consumption, and further connects the pins or the blocking blocks or the top pressure plates to be more suitable for driving the locking mechanism, which significantly reduces the power consumption of the smart lock.

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described drawings and embodiments are only part of the drawings and embodiments of the present invention, rather than all of the drawings and embodiments. Based on the drawings and embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The schematic drawings and descriptions of the embodiments of the invention are used to explain the present application and do not constitute an improper limitation on the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of the present invention;

[0045] Figure 2It is a structural schematic diagram of the present invention;

[0046] Figure 3 It is a structural schematic diagram of the present invention;

[0047] Figure 4 It is a structural schematic diagram of the present invention;

[0048] Figure 5 It is a structural schematic diagram of the present invention;

[0049] Figure 6 It is a structural schematic diagram of the present invention;

[0050] Figure 7 It is a structural schematic diagram of the present invention;

[0051] Figure 8 It is a structural schematic diagram of the present invention;

[0052] Fig. 9 It is a structural schematic diagram of the present invention;

[0053] Fig.10 This is a schematic diagram of a circuit module when the power source of the present invention comes from a battery;

[0054] Fig.11 This is a schematic diagram of a circuit module when the power source of the present invention comes from wireless radiation energy;

[0055] Fig.12 It is a schematic diagram of the application structure of the present invention;

[0056] Fig.13 It is a schematic diagram of the application structure of the present invention;

[0057] Fig.14 It is a schematic diagram of the application structure of the present invention;

[0058] Fig.15 It is a schematic diagram of the application structure of the present invention.

[0059] In the figure:

[0060] 11-coil; 110-coil end; 111-coil channel; 12-soft magnetic body; 120-soft magnetic end; 121-first through hole; 2-permanent magnet; 20-permanent magnet pole; 21-second through hole; 22-groove; 3-rod; 31-first rod; 32-first elastic body; 33-pin; 34-blocking block; 35-top pressure plate; 4-shell; 41-third through hole; 5-spacer Layer; 601-active ring body; 602-passive ring body; 603-main slot; 604 second rod-shaped body; 605-linkage slot; 606-second elastic body; 611-slot body; 612-lock tongue; 613-dial body; 621-first opening; 622-first locking part; 623-second opening; 624-second locking part; 7-connecting piece; 8-guide rail; 9-coil housing; 91-first channel.

[0061] Embodiment 1:

[0062] Refer to the attached Figure 1 ,

[0063] An electric telescopic device that can be used to drive a locking mechanism includes a housing 4 forming a chamber, two permanent magnets 2, a coil assembly, and a rod-shaped body 3;

[0064] The housing 4 forms a chamber;

[0065] The permanent magnets 2 are disposed in the cavity and fixedly connected to the housing 4, and the like magnetic poles of the two groups of permanent magnets 2 are opposite to each other;

[0066] The coil assembly is arranged in the chamber as an actuating part, and the coil assembly includes a coil 11 and a soft magnet 12. The coil 11 and the soft magnet 12 are fixedly connected, and the coil assembly can move between the two groups of permanent magnets 2 along the axial direction of the shell 4; a partition layer 5 is provided between the coil end 110 and the relative permanent magnet pole 20, and the thickness of the partition layer 5 is 0.5 mm. The partition layer 5 and the side of the permanent magnet 2 close to the coil 11 are fixedly connected; the soft magnet 12 is a soft magnetic core, the soft magnet 12 is inside the coil 11 and the soft magnetic end 120 is sunken in the coil end 110, and the distance between the soft magnetic end 120 and the relative permanent magnet pole 20 is greater than the thickness of the partition layer 5.

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

[0068] Among them, the coil assembly serves as the moving part and the permanent magnet 2 serves as the fixed part. When the coil 11 is energized, the coil assembly drives the rod-shaped body 3 to move. The like poles of the two permanent magnets 2 are opposite and symmetrically arranged at both ends of the shell 4. The like poles are opposite, which means that the poles facing each other of the two permanent magnets 2 are both S poles or both N poles, and they are placed to repel each other.

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

[0070] Embodiment 2:

[0071] Refer to the attached Figure 2 , which is different from Example 1, is that the spacer 5 is fixedly connected to the side of the coil 11 close to the permanent magnet 2, and the thickness of the spacer 5 is 1 mm.

[0072] Embodiment 3:

[0073] Refer to the attached Figure 3 , which is different from Example 1, is that the soft magnetic body 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, and the soft magnetic ring is a circular magnetic ring or a square magnetic ring or an anisotropic magnetic ring.

[0074] Embodiment 4:

[0075] Refer to the attached Figure 4 An electric telescopic device that can be used to drive a locking mechanism includes a housing 4, two sets of coil assemblies, a permanent magnet 2, and a rod-shaped body 3, wherein

[0076] The housing 4 forms a chamber;

[0077] The coil assembly is arranged in the chamber 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 groups and is fixedly connected to the shell 4. When the coil 11 is energized, the like magnetic poles of the two groups of coils 11 are opposite.

[0078] The permanent magnet 2 is arranged in the chamber and can move as an actuating member along the axial direction of the housing 4 between the two sets of coil assemblies; a partition 5 is arranged between the permanent magnet pole 20 and the opposite coil end 110, and the partition 5 is fixedly connected to the side of the coil 11 close to the permanent magnet 2, and the thickness of the partition 5 is 1.5 mm; the soft magnet 12 is a soft magnetic core, which is arranged 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 freely move inside and outside the housing 4 along the axial direction of the housing 4;

[0080] The coil assembly is used as a fixed part, and the permanent magnet 2 is used as an actuating part. The permanent magnet 2 drives the rod-shaped body 3 to move. The two groups of coil assemblies have like poles facing each other and are symmetrically arranged at both ends of the shell 4. The like poles facing each other mean that when the coil 11 is energized, the magnetic poles facing each other of the two coil assemblies are both S poles or both N poles, and they are placed to repel each other.

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

[0082] Embodiment 5:

[0083] Refer to the attached Figure 5 , which is different from Example 4, is that the soft magnetic body 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] Embodiment 6:

[0085] Refer to the attached Figure 6 , which is different from Example 1, is that 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, and the first rod-shaped body 31 can pass through the first through hole 121 and the third through hole 41.

[0086] Embodiment 7:

[0087] Refer to the attached Figure 7 An electric telescopic device that can be used to drive a locking mechanism includes a housing 4, two sets of coil assemblies, a permanent magnet 2, and a rod-shaped body 3, wherein

[0088] The housing 4 forms a chamber;

[0089] The coil assembly is arranged in the chamber 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 is divided into two groups and is fixedly connected to the housing 4. When the coil 11 is energized, the like magnetic poles of the two groups of coils 11 are opposite to each other.

[0090] The permanent magnet 2 is arranged in the chamber and can be moved as an actuating member along the axial direction of the housing 4 between the two sets of coil assemblies; a partition 5 is arranged between the permanent magnet pole 20 and the opposite coil end 110, and the partition 5 is fixedly connected to the side of the coil 11 close to the permanent magnet 2, and the thickness of the partition 5 is 1 mm; the soft magnet 12 is a soft magnetic core, which is arranged 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-shaped body, which is outside the shell 4 and fixedly connected to the permanent magnet 2 and can move freely outside the shell 4; the shell 4 is provided with a notch, the length direction of the notch is the same as the axial direction of the shell 4, the notch is the same as the movement trajectory of the rod-shaped body 3, and the movement direction of the rod is the same as the axial direction of the rod. The telescopic device also includes a connecting member 7, which passes through the notch, and one end of the connecting member 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 part, and the permanent magnet 2 serves as an actuating part. The shape of the actuating part matches the shell chamber, and the permanent magnet 2 drives the rod-shaped body 3 to move. The two groups of coil assemblies have like poles facing each other and are respectively arranged at both ends of the shell 4. The like poles facing each other mean that when the coil 11 is energized, the magnetic poles facing each other of the two coil assemblies are both S poles or both N poles, and they are placed to repel each other.

[0093] Embodiment 8:

[0094] Refer to the attached Figure 8 , an electric telescopic device that can be used to drive a locking mechanism includes a housing 4 forming a chamber, two permanent magnets 2, a coil assembly and a rod-shaped body 3;

[0095] The housing 4 forms a chamber;

[0096] The permanent magnets 2 are arranged in the cavity and fixedly connected to the shell 4. The like poles of the two groups of permanent magnets 2 are opposite to each other. A groove 22 is provided on the surface of one permanent magnet 2 opposite to the coil assembly, and the other permanent magnet 2 has no groove 22.

[0097] The coil assembly is arranged in the chamber as an actuating part, and the coil assembly includes a coil 11 and a soft magnet 12. The coil 11 and the soft magnet 12 are fixedly connected, and the coil assembly can move between the two groups of permanent magnets 2 along the axial direction of the shell 4; a partition layer 5 is provided between the coil end 110 and the relative permanent magnet pole 20, and the thickness of the partition layer 5 is 0.3 mm. The partition layer 5 and the side of the permanent magnet 2 close to the coil 11 are fixedly connected, and the partition layer 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 magnetic 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 opposite surface of the housing 4 fixedly connected to the permanent magnet 2 is provided with a third through hole 41 that communicates with each other, and the rod-shaped body 3 can pass through the second through hole 21 and the third through hole 41 in sequence.

[0099] Among them, the coil assembly serves as the moving part and the permanent magnet 2 serves as the fixed part. When the coil 11 is energized, the coil assembly drives the rod-shaped body 3 to move. The like poles of the two permanent magnets 2 are opposite to each other and are respectively arranged at the two ends of the shell 4. The like poles are opposite to each other, which means that the poles facing each other of the two permanent magnets 2 are both S poles or both N poles, and they are placed to repel each other.

[0100] Embodiment 9:

[0101] Refer to the attached Fig. 9, which is different from Example 8, the permanent magnet 2 without the groove 22 is provided with a second through hole 21, the shell 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 shell 9, the coil is arranged in the coil shell 9, and two first channels 91 are symmetrically arranged on the edge of the coil shell 9, the first channels 91 are consistent with the axial direction of the chamber, and the walls at both ends of the coil shell 9 in this embodiment are equivalent to the partition in Example 8; the telescopic device also includes two guide rails 8 arranged in the chamber, the guide rails 8 are fixedly connected to the shell 4, the guide rails 8 are consistent with the axial direction of the chamber, the two guide rails 8 respectively pass through the corresponding first channels 91, the coil assembly can slide freely along the guide rails 8, and 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 the coil 11 is electrically connected to one of the guide rails 8 at the corresponding first channel 91 through a brush, and the other end is electrically connected to the second guide rail 8 at the corresponding first channel 91 through a brush, thereby energizing the coil 11 through the two guide rails 8.

[0103] Embodiment 10:

[0104] See attached Fig.10 The structural components of the electric telescopic device can be any one of the embodiments 1-9, and further include a circuit module for controlling the energization time of the coil 11, the circuit module includes a controller and a switch circuit;

[0105] The power supply of the driving circuit module comes from the battery, and the controller is electrically connected to the switch circuit; the switch circuit is electrically connected to the coil 11; the controller controls the power-on time of the coil 11 through the switch circuit according to the set time, and the power-on time of the coil 11 is less than the entire process action time of switching between two stable positions of the actuating member.

[0106] Embodiment 11:

[0107] See attached Fig.11 The structural components of the electric telescopic device can be any one of the embodiments 1-9, and further include a circuit module for controlling the energization time of the coil 11, the circuit module includes a controller and a switch circuit;

[0108] The power supply of the driving circuit module comes from the collected wireless radiation energy. The circuit module also includes an energy storage module, which includes an energy storage capacitor, wherein 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 at the same time; during operation, the controller checks the charging process of the energy storage capacitor, and when the voltage of the energy storage capacitor reaches a threshold, the energy storage capacitor is started to discharge the coil 11 through the switching circuit, and the power-on time of the coil 11 is less than the entire process action time of switching between two stable positions of the actuating part.

[0109] Application Example 1:

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

[0111] Refer to the attached Fig.12 The first locking portion 622 is a non-rotatable fixed part, and the second locking portion 624 is a rotatable movable part. When the first rod-shaped body 31 is extended, the position of the locking mechanism is suitable for the locking action, that is, the first opening 621 is aligned with the second opening 623, and the first rod-shaped body 31 compresses the first elastic member 32 to push the pin 33 through the first opening 621 and insert into the second opening 623, so that the second locking portion 624 cannot rotate, thereby completing the locking action.

[0112] Application Example 2:

[0113] Refer to the attached Fig.13 The telescopic device is different from the embodiment 1 in that the rod-shaped body 3 includes a first rod-shaped body 31 and a block 34, and the top of the first rod-shaped body 31 is fixedly connected to the block 34. The application working process is as follows:

[0114] The head of the locking tongue 612 is inserted into the groove 611 through the manual shift body 613, so that the rod-shaped body 3 extends out and the blocking block 34 is pushed into the space vacated by the tail of the locking tongue 612. As a result, the head of the locking tongue 612 can no longer be withdrawn from the groove 611 through the manual shift body 613, and the locking action is completed.

[0115] Application Example 3:

[0116] An application example of embodiment 6:

[0117] Refer to the attached Fig.14 The lock body includes a top pressure plate 35, an active ring body 601 with a main notch 603, a passive ring body 602 with a linkage notch 605, a second rod-shaped body 604 and a second elastic member 606. The second elastic member 606 is a spring. The second elastic member 606 is arranged between the top pressure plate 35 and the passive ring body 602. The top of the pin 33 is fixedly connected to the top pressure plate 35. The active ring body 601 can be rotated manually by a handle. The passive ring body 602 can only be linked with the active ring body 601 when the second rod-shaped body 604 passes through the main notch 603 and the linkage notch 605 at the same time, so as to complete the unlocking action. The working process is as follows:

[0118] When the first rod-shaped body 31 is extended, the position of the locking mechanism is suitable for the unlocking action, that is, the main slot 603 and the linkage slot 605 are opposite and connected, the first rod-shaped body 31 compresses the first elastic body 32 to push the pin 33 and the top pressure plate 35, and then compresses the second elastic body 606, pushing the second rod-shaped body 604 through the linkage slot 605 to insert into the main slot 603, and rotating the active ring body 601 to complete the unlocking action.

[0119] Application example 4:

[0120] Application example of embodiment 8:

[0121] See attached Fig.15 The lock body includes a top pressure plate 35, an active ring body 601 with a main notch 603, a passive ring body 602 with a linkage notch 605, a second rod-shaped body 604 and a second elastic member 606. The second elastic member 606 is a spring. The second elastic member 606 is arranged between the top pressure plate 35 and the passive ring body 602. The top of the rod-shaped body 3 is fixedly connected to the top pressure plate 35. The active ring body 601 can be rotated by a handle. The passive ring body 602 can only be linked with the active ring body 601 when the second rod-shaped body 604 passes through the main notch 603 and the linkage notch 605 at the same time, so as to complete the unlocking action. Working process:

[0122] When the rod-shaped body 3 is extended, the position of the locking mechanism is suitable for the unlocking action, 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 through the linkage slot 605 to insert into the main slot 603, and rotating the active ring body 601 to complete the unlocking action.

[0123] When the coil assembly is in a stable position close to the permanent magnet 2 with a groove 22, the distance between the soft magnetic end 120 and the relative 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 a groove 22, the distance between the soft magnetic end 120 and the relative 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 electricity. However, when the body 3 presses the second elastic body 606, the elastic force is opposite to the holding force, and the force maintaining the stable state is equal to the difference between the holding force and the elastic force. Therefore, the repulsive force to change the stable state is very small, and this embodiment can still reduce power consumption.

[0124] The working principle and use process of the present invention:

[0125] The coil assembly is the moving part, and the permanent magnet 2 at both ends of the shell 4 (hereinafter referred to as end A and end B) is the fixed part: when the coil 11 is powered off, due to the magnetic attraction between the soft magnetic body 12 in the coil assembly and the permanent magnet 2, the moving part will have two stable positions (when the moving part and the fixed parts on each side are stably adsorbed, it is called a stable position). When the coil assembly is relatively close to the A end of the housing, the attraction of the fixing part at the A end is greater than the attraction of the fixing part at the B end, and the moving part moves toward the A end. Because the size of the attractive magnetic force is inversely proportional to the square of the distance between the soft magnetic end 120 and the corresponding permanent magnet pole 20, the attraction of the fixing part at the A end becomes larger and larger, and at the same time, the attraction of the fixing part at the B end becomes smaller and smaller, until the moving part is closely close to the fixing part at the A end. At this time, the attraction of the A end reaches the maximum (the so-called holding force). The holding force is used to keep the moving part in close proximity to the fixing part at the A end (called the stable position of the A end). When a reverse driving current is passed through the coil 11, due to the relatively small driving current, the magnetic field strength formed by the coil 11 at the soft magnetic body 12 is much smaller than the magnetic field strength formed by the permanent magnet 2, so the size and direction of the holding force remain basically unchanged. At the same time, when the coil 11 is energized, it forms an electromagnet, so that a repulsive magnetic force or an attractive magnetic force is generated between the coil 11 and the permanent magnet 2. The magnitude of the magnetic force is proportional to the driving current of the coil 11, because it is inversely proportional to the square of the distance between the permanent magnet pole 20 and the corresponding end of the coil 11. Since the current is in the opposite direction and the poles of the fixing parts at the A and B ends are relatively arranged, the actuating part generates a repulsive force on the A end fixing part and an attractive force on the B end fixing part. When the combined force of pushing and pulling is greater than the holding force, the actuating part moves toward the B end, and the attractive force generated by the soft magnet 12 and the permanent magnet 2 at the B end becomes larger and larger, and the attractive force generated by the soft magnet 12 and the permanent magnet 2 at the A end becomes smaller and smaller, until the actuating part is closely close to the B end fixing part. At this time, even if the coil 11 is powered off, the holding force of the soft magnet 12 and the permanent magnet 2 can still maintain the position of the actuating part closely close to the B end fixing part (called the stable position of the B end).

[0126] When the actuating part is at one of the two ends A and B in the shell, the actuating part and the fixed part will be in close proximity. In order to prevent the permanent magnet 2 and the coil 11 from colliding and damaging the device, a partition 5 is arranged between the permanent magnet pole 20 and the corresponding coil end 110. The partition 5 can be a rubber pad or a plastic sheet or the walls at both ends of the coil shell 9 or other structures with an isolation effect.

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

[0128] In addition, when the actuating part is at one of the two ends A and B in the outer shell, due to the magnetic attraction generated between the permanent magnet 2 and the soft magnet 12 in the coil assembly which are close to each other, the actuating part and the fixed part will be closely close to each other. At this time, the attraction reaches the maximum (holding force). At this time, even if the power is off, the holding force can still maintain a closely close state (called a stable position). The magnitude of the holding force is inversely proportional to the square of the distance between the permanent magnet pole 20 and the corresponding end of the soft magnet 12. When the coil 11 is energized in the reverse direction, the actuating part 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 driving current that generates the repulsive force, and the more power is saved.

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

[0130] The third key feature for reducing driving power consumption is that the power-on time of coil 11 is shorter than the entire action time of the switching between two stable positions of the actuating member. This is because when coil 11 is powered on in the reverse direction, the actuating member moves from end A to end B. Since the actuating member is close to the fixed member at end A when power is just turned on, the repulsive force between the actuating member and the fixed member at end A is extremely large. It only takes a short time for the actuating member to obtain a sufficiently large momentum. At this time, the power is turned off, and the actuating member continues to move toward end B by inertia. When it moves relatively close to end B, the holding force between the actuating member and the fixed member at end B is greater than the holding force between the actuating member and the fixed member at end A. The actuating member continues to move toward end B until it is close to the fixed member at end B. Therefore, coil 11 does not need to be powered on during the entire process of the actuating member's movement, and the required power consumption is very small.

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

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

[0133] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0134] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. An electric telescopic device that can be used to drive a locking mechanism, characterized in that: include A housing (4) forming a chamber; Permanent magnets (2) are arranged in the chamber, the permanent magnets are in two groups and are fixedly connected to the shell, and the like magnetic poles of the two groups of permanent magnets are opposite to each other; A coil assembly is arranged in a chamber, comprising a coil (11) and a soft magnetic body (12), wherein the coil (11) and the soft magnetic body (12) are fixedly connected and can move between two groups of permanent magnets (2); a partition layer (5) is arranged between the coil end (110) and the opposite permanent magnet pole (20), and the thickness of the partition layer is less than 1.6 mm; and the distance between the soft magnetic end (120) and at least one opposite permanent magnet pole (20) is greater than the thickness of the partition layer (5); The rod-shaped body (3) is fixedly connected to the coil assembly and can move axially along the housing 4.

2. An electric telescopic device that can be used to drive a locking mechanism, characterized in that: include A housing (4) forming a chamber; A coil assembly is disposed in the chamber and comprises a coil (11) and a soft magnetic body (12), wherein the coil (11) and the soft magnetic body (12) are fixedly connected, the coil assembly comprises two groups and is fixedly connected to the housing (4), and when the coils are energized, the like magnetic poles of the two groups of coils face each other; A permanent magnet (2) is disposed in the chamber and is movable between two groups of coil assemblies; a partition (5) is disposed between the permanent magnet pole (20) and the opposite coil end (110), and the thickness of the partition is less than 1.6 mm; the distance between the permanent magnet pole (20) and at least one opposite soft magnetic 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 axially along the housing 4.

3. The electric telescopic device that can be used to drive the locking mechanism according to claim 1, characterized in that: The coil assembly further comprises a coil housing (9), the coil (11) being arranged in the coil housing (9), the coil housing (9) being provided with two first channels (91), the first channels being aligned with the axial direction of the chamber; The telescopic device also includes two guide rails (8) arranged in the chamber, the guide rails (8) are fixedly connected to the shell (4), the axial directions of the guide rails and the chamber are consistent, the guide rails (8) pass through the corresponding first channel (91), the coil assembly can slide freely along the guide rails, and the axial direction of the guide rails (8) is consistent with the running track of the coil assembly.

4. An electric telescopic device for driving a locking mechanism according to any one of claims 1 to 3, characterized in that: The soft magnetic 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 to 3, characterized in that: A groove (22) is provided on the surface of the permanent magnet (2) opposite to the coil assembly.

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

8. An electric telescopic device that can be used to drive a locking mechanism according to claims 1-7, characterized in that: the telescopic device also includes a circuit module for controlling the power-on time of the coil, and the circuit module includes a controller and a switch circuit; When the power supply of the driving circuit module comes from a battery, the controller is electrically connected to the switch circuit; the switch circuit is electrically connected to the coil (11); the controller controls the power-on time of the coil (11) through the switch circuit according to a set time; When the power supply of the driving circuit module comes from the collected wireless radiation energy, the circuit module further includes an energy storage module, and the energy storage module includes an energy storage capacitor, wherein: The energy storage module is electrically connected to the controller; the switch circuit is electrically connected to the controller, the energy storage capacitor, and the coil at the same time; when working, the controller checks the charging process of the energy storage capacitor, and when the voltage of the energy storage capacitor reaches a threshold, the switch circuit starts the energy storage capacitor to discharge the coil; The energizing time of the coil (11) is shorter than the whole process action time of switching between two stable positions of the actuating member, so that the actuating member can complete the switching between two stable positions of the actuating member by means of inertia and the attraction between the soft magnetic body (12) and the permanent magnet (2).

9. An electric telescopic device for driving a locking mechanism according to claims 1-8, characterized in that: The telescopic device is used in the field of locks.

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