CN215108162U

CN215108162U - Unlocking mechanism and intelligent lock adopting same

Info

Publication number: CN215108162U
Application number: CN202120868404.8U
Authority: CN
Inventors: 汪平; 闵雄; 卢良斌
Original assignee: Guangdong Square Technology Co ltd
Current assignee: Guangdong Square Technology Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-10
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses an unlocking mechanism and an intelligent lock adopting the unlocking mechanism, wherein the unlocking mechanism is used for being matched with a lock hook which can move between a locking position and an unlocking position to realize unlocking; a first limit groove is formed in the lock hook; the unlocking and locking mechanism comprises a bolt mechanism, a limiting mechanism and a driving mechanism; the lock tongue mechanism comprises a lock tongue and a lever structure which drives the lock tongue to rotate between a clamping position and a non-clamping position through rotation; when the lock hook is positioned at the unlocking position, the limiting mechanism rotates from the first limiting position to the second limiting position under the friction transmission of the driving mechanism; when the lock hook is in the locking position, the limiting mechanism is reset to the first limiting position from the second limiting position; the unlocking mechanism reduces unlocking force required to be output by the driving mechanism to rotate the limiting mechanism during unlocking by arranging friction transmission between the driving mechanism and the limiting mechanism and arranging the transmission ratio of a friction pair.

Description

Unlocking mechanism and intelligent lock adopting same

All as the field of technology

The utility model relates to a tool to lock technical field especially relates to a separate blocked mechanical system and adopt this intelligent lock of separating blocked mechanical system.

All the above-mentioned background techniques

The intelligent lock is different from a traditional mechanical lock, is a lock which is more intelligent in the aspects of user identification, safety and manageability, and the intelligent lock intelligently embodies that whether the mark is that whether the intelligent lock can be remotely controlled by a mobile phone and is linked with an intelligent home. The intelligent lock is often used as a lock control for safety and process control, and the application field is very wide, for example, the lock control of a power supply box, a distribution network outdoor power distribution cabinet, a substation mechanism box and a power metering box which face to city key public facilities; and the lock control is used for the package of logistics, the lock control of carriages and containers; and the lock control of oil and gas pipeline valves, commodity coal sample secrecy containers and the like for material management.

Currently, smart locks on the market are roughly divided into two types: (1) an intelligent lock based on Bluetooth technology; (2) intelligence lock based on NFC technique. The intelligent lock based on the Bluetooth technology generally adopts a built-in battery or adopts handheld equipment to supply power, the service life and the reliability are generally not ideal, and the intelligent lock adopts handheld power supply and is inconvenient to use. Because the power maintenance has been removed from to the intelligence lock based on NFC technique, the advantage is more obvious under the more complicated environment of electricity-taking, but has the power consumption low, and convertible moment is limited, and then leads to the problem that the power of unblanking is little, the stroke of unblanking and the power of unblanking are not enough.

In order to solve the problem that the unlocking force of the intelligent lock based on the NFC technology is too small, the unlocking stroke and the unlocking force are not enough, technical personnel in the field realize the unlocking by reducing the elastic coefficient of a related spring, but find that the intelligent lock is easily and automatically opened under outdoor use or a vibration environment, and the safety has a great problem.

All kinds of practical novel contents

The utility model discloses a first purpose aims at providing a separate blocked mechanical system, and actuating mechanism rotates the power of unblanking that stop gear needs the output when reducing the unblock, reduces the automatic risk of opening of intelligent lock under vibration environment, improves the security of intelligent lock.

In order to realize the utility model discloses a first purpose, the utility model discloses a following technical scheme:

an unlocking mechanism is used for being matched with a lock hook to realize unlocking; the lock hook is provided with a first limiting groove which can move between a locking position and an unlocking position; the unlocking and locking mechanism comprises a bolt mechanism, a limiting mechanism and a driving mechanism; the lock tongue mechanism comprises a lock tongue and a lever structure which drives the lock tongue to rotate between a clamping position and a non-clamping position through rotation; when the lock hook is in the unlocking position, the lock tongue is driven by the lever structure to rotate to the non-clamping position and move out of the first limit groove, and the limit mechanism rotates from the first limit position to the second limit position under the friction transmission of the driving mechanism to provide a space for the lever structure to rotate; when the lock hook is in the locking position, the lock tongue is driven by the lever structure to rotate to the clamping position and clamped into the first limiting groove, and the limiting mechanism is reset from the second limiting position to the first limiting position to limit the lever structure.

As a specific embodiment, the lever structure comprises a rotating fulcrum, and a power part and a resistance part which can rotate around the rotating fulcrum; the power part drives the lock tongue and the resistance part to rotate through up-and-down movement; the resistance part is matched with the limiting mechanism and used for limiting the lock tongue mechanism; when the lock hook is located at the locking position, the power part moves downwards under the action of power to drive the lock tongue and the resistance part to rotate along the anticlockwise direction, the lock tongue is clamped into the first limiting groove, and the resistance part abuts against the limiting mechanism which resets to the first limiting position; when the latch hook is in the unlocking position, the power part moves upwards under the action of power to drive the spring bolt and the resistance part to rotate along the clockwise direction, the spring bolt moves out of the first limiting groove, and the resistance part abuts against a limiting mechanism rotating to the second limiting position.

Further, when the lock hook is in the locking position, the power part moves downwards under the abutting action of the lock hook and extrudes an elastic element to drive the lock tongue and the resistance part to rotate along the anticlockwise direction; when the lock hook is in the unlocking position, the power part moves upwards under the action of the elastic force of the elastic element to drive the lock tongue and the resistance part to rotate along the clockwise direction.

Further, the bolt mechanism also comprises a first reset torsion spring; the first reset torsion spring is sleeved on the rotating fulcrum and used for applying clockwise acting force to the lever structure.

Furthermore, a second limiting groove is formed in the lock hook; the power part is forked on the lock hook through the second limiting groove.

Furthermore, the contact point of the power part and the lock hook is an arc tangent plane, and the tangent angle theta of the arc tangent plane of the contact point is more than 0 and less than 90 degrees; the length ratio L1/L2 of the power part to the resistance part ranges from 0 < L1/L2 < 1; the range of the friction coefficient mu between the resistance part and the second limiting part is 0 & ltmu & lt 1.

In a specific embodiment, the tangent angle θ of the arc tangent plane of the contact point of the power part and the latch hook is 30 °; the length ratio L1 to L2 of the power part to the resistance part is 1 to 2; the friction coefficient mu between the resistance part and the second limiting part is 0.5.

As a specific embodiment, the driving mechanism comprises an electric driving element and a main friction transmission part which can rotate under the driving of the electric driving element; the limiting mechanism comprises a rotating shaft, a second reset torsion spring sleeved on the rotating shaft, a driven friction transmission part connected to the rotating shaft, at least one first limiting part and at least one second limiting part which is recessed inwards compared with the first limiting part; the follow friction drive portion is in the friction drive of main friction drive portion rotates down, will stop gear rotates to the second limit position, and the spacing portion of second rotates to the orientation lever structure, for lever structure provides pivoted space, or stop gear resets to first limit position under the effect of second reset torsion spring, and first limit portion rotates to the orientation lever structure is right lever structure carries on spacingly.

In a specific embodiment, the outer wall surface of the first limiting portion is an outer side surface of a sector cylinder, and the second limiting portion is a groove recessed inwards relative to the outer wall surface of the sector cylinder.

In a specific embodiment, the inner wall surface of the groove comprises an inner top plane, a left side plane and a right side plane which are positioned at two sides of the inner top plane, and a connecting curved surface which smoothly connects the left side plane and the right side plane.

In a specific embodiment, an outer wall surface of the secondary friction transmission part along the circumferential direction is a cylindrical surface; the main friction transmission part is assembled on an output shaft of the electric driving element and can rotate under the driving of the electric driving element; the main friction transmission part is convexly provided with at least two convex parts at intervals along the circumferential direction, and the outer wall surface of each convex part is provided with a fan-shaped cylindrical surface which is used for forming a friction pair with the cylindrical surface.

Furthermore, the range of the transmission ratio N1/N2 of a friction pair formed by the auxiliary friction transmission part of the limiting mechanism and the main friction transmission part of the driving mechanism is (N1/N2) > 1.

In a specific embodiment, the transmission ratio N1: N2 of the friction pair formed by the slave friction transmission part of the limit mechanism and the master friction transmission part of the driving mechanism is 1: 0.9.

The utility model discloses a second purpose aims at providing an adopt above-mentioned intelligent lock of deblocking mechanism, and actuating mechanism rotates the power of unblanking that stop gear needs the output when reducing the unblock, reduces the automatic risk of opening of intelligent lock under vibration environment, improves the security of intelligent lock.

In order to realize the second purpose of the utility model, the utility model adopts the following technical scheme:

an intelligent lock comprises the unlocking structure and the lock hook matched with the unlocking structure; the lock also comprises a lock body and a circuit module; the circuit module is electrically connected with the driving mechanism and used for controlling the action of the driving mechanism; the lock body is used for providing an accommodating space for accommodating the unlocking mechanism and the circuit module.

The utility model has the advantages that:

the utility model provides a release locking mechanism and adopt this intelligent lock of releasing locking mechanism reduces the unlocking force that the actuating mechanism needs to export to rotate the stop gear when unblocking through setting up friction drive and setting up the transmission ratio of friction pair between actuating mechanism and stop gear; meanwhile, the lever structure is arranged in the bolt mechanism, so that the length of the power part is smaller than that of the resistance part, the power required by unlocking is increased, the risk that the intelligent lock is automatically opened in a vibration environment is reduced, and the safety of the intelligent lock is improved.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. The drawings in the following description are only examples of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts.

Fig. 1 is a schematic cross-sectional view of an intelligent lock provided by an embodiment of the present invention;

fig. 2 is a schematic perspective view of the unlocking mechanism and the locking hook provided in the embodiment of the present invention (the locking hook is in the locking position);

fig. 3 is another perspective view of the unlocking mechanism and the locking hook provided in the embodiment of the present invention (the locking hook is in the unlocking position).

(specific embodiments) in all cases

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

As used in this specification and the appended claims, the terms "comprises" and "comprising" are intended to only encompass the explicitly identified steps and elements, which do not constitute an exclusive list, and that a method or apparatus may include other steps or elements.

It is noted that when a feature is referred to as being "connected" to another feature, it can be directly connected to the other feature or be indirectly connected to the other feature, unless otherwise specified. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the drawings.

As shown in fig. 1 to 3, an intelligent lock includes a lock body 1, a lock hook 2, an unlocking mechanism and a circuit module 4; the lock body 1 comprises a lock housing 11 and a mounting 12 located inside said lock housing 11. The lock body 1 in the embodiment adopts a split structure, and the lock shell 11 can be made of a hard metal material, so that the risk of damaging the intelligent lock from the outside of the intelligent lock is reduced; the mounting base 12 may be made of a plastic material, so as to facilitate processing of various mounting holes/grooves on the mounting base 12, and facilitate installation of various elements inside the smart lock.

As shown in fig. 2 and 3, the shackle 2 is movable back and forth between a locked position and an unlocked position, and the shackle 2 includes a shackle connecting end 21 defined within the lock body 1 and a shackle free end 22 that is insertable into and disengageable from an upper locking hole of the lock body 1. The latch hook connecting end 21 is provided with a first limiting groove 211 and a second limiting groove 212.

As shown in fig. 1 to 3, the unlocking mechanism includes a latch bolt mechanism 31, a stopper mechanism 32, and a drive mechanism 33; the latch bolt mechanism 31 is rotatably arranged in the mounting seat 12 and comprises a latch bolt 311 and a lever structure 312 which is connected with the latch bolt 311 and drives the latch bolt 311 to rotate between a clamping position and a non-clamping position through rotation; the lever structure 312 rotates counterclockwise to drive the latch tongue 311 to rotate to the engaging position and to be engaged in the first limiting groove 211; the lever structure 312 rotates clockwise to drive the latch tongue 311 to rotate to the non-engaging position and move out of the first limit groove 211; the limiting mechanism 32 is rotatably disposed in the mounting seat 12, and rotates the second limiting position from the first limiting position under the friction transmission of the driving mechanism 33 to provide a space for the lever structure 312 to rotate clockwise, and limits the lever structure 312 when the locking hook 2 moves to the unlocking position (the locking tongue 311 moves out of the first limiting groove 211), so that the lever structure 312 continues to rotate clockwise, or resets from the second limiting position to the first limiting position when the lever structure 312 rotates counterclockwise, and limits the lever structure 312 when the locking hook 2 moves to the locking position (the locking tongue 311 is clamped into the first limiting groove 211), so that the lever structure 312 continues to rotate counterclockwise.

In the embodiment, the intelligent lock reduces unlocking force required to be output by the driving mechanism 33 to rotate the limiting mechanism 32 during unlocking by arranging friction transmission between the driving mechanism 33 and the limiting mechanism 32 and arranging the transmission ratio of a friction pair; meanwhile, the lever structure 312 is arranged in the bolt mechanism 31, so that the length of the power portion 3122 is smaller than that of the resistance portion 3123, power required for unlocking is increased, the risk of automatic opening of the intelligent lock in a vibration environment is reduced, and the safety of the intelligent lock is improved.

As shown in fig. 1 to 3, the lever structure 312 includes a rotation fulcrum 3121, and a power portion 3122 and a resistance portion 3123 that are rotatable around the rotation fulcrum 3121; the power portion 3122 drives the bolt 311 and the resistance portion 3123 to rotate around the rotation fulcrum 3121 through up-and-down movement; the resistance portion 3123 is matched with the limit mechanism 32, and is used for limiting the bolt mechanism 32; when the lock hook 2 moves from the locking position to the unlocking position, the power portion 3121 moves upward under the power action, and drives the lock tongue 311 and the resistance portion 3123 to rotate clockwise, the lock tongue 311 moves out of the first limit groove 211, and the resistance portion 3123 is clamped into the limit mechanism 32 which rotates to the second limit position; when the lock hook 2 moves from the unlocking position to the locking position, the power portion 3121 moves downward under the action of power to drive the lock tongue 311 and the resistance portion 3123 to rotate around the counterclockwise direction, the lock tongue 311 is clamped into the limiting groove 211, the resistance portion 3123 rotates out from the limiting mechanism 32 located at the second limiting position, the limiting mechanism 32 resets to the first limiting position, and the resistance portion 3123 is limited.

As shown in fig. 2 and 3, the second limiting groove 212 is an annular groove annularly formed on the lock hook connecting end 21, and the power portion 3121 is forked on the lock hook connecting end 21 through the second limiting groove 212 and moves up and down along the axial direction of the lock hook connecting end 21; as a specific embodiment, one end of the power portion 3121, which is engaged with the second limiting groove 212, includes two prongs 3124 and a fork 3125 located between the two prongs 3124, and the two prongs 3124 are forked at the corresponding latch hook connection end 21 of the second limiting groove 212 through the fork 3125.

When the intelligent lock needs to be locked, the lock hook 2 is pressed downwards, the lock hook connecting end 21 moves downwards, the power portion 3121 moves downwards under the abutting action of the lock hook connecting end 21, and presses an elastic element (not shown, as a specific implementation manner, the elastic element adopts a spring, namely, an unlocking main spring) located below the lock hook connecting end 21, so as to drive the lock tongue 311 and the resistance portion 3123 to rotate along the counterclockwise direction, the lock tongue 311 is clamped into the first limiting groove 211, the resistance portion 3123 rotates out from the limiting mechanism 32 located at the second limiting position, and the limiting mechanism 32 resets to the first limiting position; when the intelligent lock needs to be unlocked, the circuit module 4 outputs a driving signal to the driving mechanism 33, the driving mechanism 33 drives the limiting mechanism 32 to rotate to the second limiting position from the first limiting position through friction transmission, the resistance portion 3123 provides a clockwise rotating space, the power portion 3121 moves upwards under the elastic restoring force of the elastic element to drive the lock tongue 311 and the resistance portion 3123 rotates around the clockwise direction, the lock tongue 311 moves out of the first limiting groove 211, and the resistance portion 3123 is clamped into the limiting mechanism 33 which rotates to the second limiting position.

As shown in fig. 1 to 3, the latch bolt mechanism 31 further includes a first reset torsion spring 313, the first reset torsion spring 313 is sleeved on the rotation fulcrum 3121, and is configured to provide clockwise acting force to the lever structure 312, that is, when the smart lock needs to be unlocked, the power portion 3121 moves upward under the combined action of the elastic restoring force of the elastic element and the clockwise acting force of the first reset torsion spring 313, so as to accelerate the unlocking speed and save the unlocking time.

As shown in fig. 1 to 3, the drive mechanism 33 includes an electric drive element 331 (in the present embodiment, the electric drive element 331 is a motor) and a main friction transmission portion 332, the main friction transmission portion 332 being fitted on an output shaft of the electric drive element 331; the electric driving element 331 is electrically connected with the circuit module 4 and can drive the main friction transmission part 332 to rotate under the control of the circuit module 4; the limiting mechanism 32 is rotatably disposed in the mounting seat 12, and includes a rotating shaft 321, a second reset torsion spring 325 disposed on the rotating shaft 321, and a second limiting portion 324 connected to the rotating shaft 321, wherein the second limiting portion 322 is disposed on the rotating shaft 321, and the first limiting portion 323 is disposed on the rotating shaft 321, and the second limiting portion 324 is disposed on the rotating shaft 321 and is recessed inward along the radial direction of the rotating shaft 321.

As a specific implementation manner, in the present embodiment, the number of the first limiting portions 323 and the second limiting portions 324 is two, and the two first limiting portions 323 and the two second limiting portions 324 are arranged at intervals along the circumferential direction of the rotating shaft 321; the secondary friction transmission part 322 is located above the first limiting part 323 and the second limiting part 324, and rotates under the friction transmission of the primary friction transmission part 332 to drive the second limiting part 324 of the limiting mechanism 32 to rotate to the resistance part 3123 (the limiting mechanism 32 rotates to the second limiting position), and the second limiting part 324 provides a clockwise rotating space for the resistance part 3123 for unlocking, or the limiting mechanism 32 resets under the effect of the second reset torsion spring 325 (the limiting mechanism 32 resets to the first limiting position), rotates the first limiting part 323 to the resistance part 3123, and the first limiting part 323 limits the resistance part 3123.

As shown in fig. 2 and 3, the main friction transmission part 332 is provided with at least two protruding parts 3321 (in the present embodiment, the number of the protruding parts 3321 is two) protruding along the circumferential direction at intervals, and one end side surface of the protruding part 3321 close to the auxiliary friction transmission part 322 comprises a sector cylindrical surface; an outer wall surface in the circumferential direction from the friction transmitting portion 322 includes a cylindrical surface 3221 for constituting a friction pair with the sector cylindrical surface of the projection 3321; when the main friction transmission part 332 is rotated by the electric driving element 3321 to bring the sectorial cylindrical surface of the projection 3321 into frictional contact with the cylindrical surface 3221 of the sub friction transmission part 322, the projection 3321 is rotated from the sub friction transmission part 322 by the friction transmission driving.

In this embodiment, the main friction transmission part 332 performs friction transmission with the slave friction transmission part 322 by providing the plurality of protrusions 3321, so that the idle time of the main friction transmission part 332 when the smart lock is unlocked is shortened (because only one protrusion 3321 contacts with the slave friction transmission part 322, the slave friction transmission part 322 can perform friction transmission), specifically, the unlocking time of the plurality of protrusions 3321 is 1/N of that of one protrusion 3321 (N is the number of the protrusions 3321), the unlocking response time is shortened, and the user experience is improved.

In this embodiment, the cross section of the limiting mechanism 32 has a circular symmetric structure, for example, the two first limiting portions 323 are symmetric to each other, and the two second limiting portions 324 are symmetric to each other, so that automatic unlocking in a vibration environment is further reduced.

As shown in fig. 2 and 3, the outer wall surface of the first limiting portion 323 is an outer side surface of a sector cylinder, the second limiting portion 324 is a groove recessed inward relative to the outer wall surface of the sector cylinder, and the inner wall surface of the groove includes an inner top plane, a left side plane and a right side plane located on both sides of the inner top plane, and a connecting curved surface smoothly connecting the left side plane and the right side plane.

As shown in fig. 1, the smart lock further includes a first sensor 51 for detecting the operation of the lock hook 2 and a second sensor 52 for detecting the operation of the projection 3321 on the main friction transmission part 332.

In this embodiment, the operation flow of unlocking the smart lock is as follows:

when the intelligent lock is in a locked state, that is, the lock hook 2 is in a locked position, the power portion 3121 is located at the lower end of the second limiting groove 212 under the abutting action of the lock hook connecting end 21, and presses the elastic element located below the lock hook connecting end 21, the lock tongue 311 is clamped into the first limiting groove 211, and the resistance portion 3123 is limited by the first limiting portion 323 of the limiting mechanism 32 which is reset to the first limiting position to rotate; when the smart lock needs to be unlocked, energy is provided to the circuit module 4 through an NFC card reader (such as a mobile terminal with an NFC module, such as a mobile phone, a PAD, an iPAD, and the like), the circuit module 4 outputs a control signal to the electric driving element 331, the electric driving element 331 drives the main friction transmission portion 332 to rotate, when the protrusion portion 3321 of the main friction transmission portion 332 rotates to contact with the slave friction transmission portion 322, the main friction transmission portion 332 drives the slave friction transmission portion 322 to rotate through friction transmission, so as to drive the limiting mechanism 32 to rotate from the first limiting position to the second limiting position, the second limiting portion 324 faces the resistance portion 3123, so as to provide a space for the resistance portion 3123 to rotate in the clockwise direction, the power portion 3122 moves upward under the restoring force of the elastic element and the first restoring torsion spring 313, so as to drive the latch tongue 311 and the resistance portion 3123 to rotate in the clockwise direction, and the latch tongue 311 moves out of the first limiting groove 211, the lock hook connecting end 21 moves upwards under the thrust action of the power portion 3122 and moves from a locking position to an unlocking position; when the intelligent lock needs to be locked, the lock hook 2 is pressed downwards, the lock hook connecting end 21 moves downwards along the second limiting groove 212, the power portion 3122 moves downwards, the elastic element below the lock hook connecting end 21 is squeezed, the power portion 3122 drives the lock tongue 311 and the resistance portion 3123 to rotate along the counterclockwise direction, the lock tongue 311 is clamped into the first limiting groove 211, the resistance portion 3123 is transferred out from the limiting mechanism 32 (namely, the groove) located at the second limiting position, the limiting mechanism 32 is reset to the first limiting position under the restoring force effect of the second restoring torsion spring 325, the first limiting portion 323 faces the resistance portion 3123, and the resistance portion 3123 is limited.

As a specific embodiment, the contact point between the fork port 3125 of the lever structure 312 and the latch hook connection end 21 is an arc tangent plane, the arc tangent plane tangent angle θ of the contact point ranges from 0 < θ < 90 ° (as a specific embodiment, θ is 30 °), the length ratio L1/L2 of the length L1 of the power portion 3122 of the lever structure 312 to the length L2 of the resistance portion 3123 of the lever structure 312 ranges from 0 < (L1/L2) < 1 (as a specific embodiment, L1: L2 is 1: 2, that is, the length L1 of the power portion 3122 is equal to half of the length L2 of the resistance portion 3123), the contact point between the resistance portion 3123 of the lever structure 312 and the second limit portion 324 adopts a cylindrical surface contact, the friction coefficient μ ranges from 0 < μ < 1 (as a specific embodiment, μ is 0.5), the friction coefficient μ ranges from 0 < μ 63332 of the friction portion 322 of the limit mechanism 32 to the main friction transmission portion 332 of the driving mechanism 33 ranges from N > N5392/N1 (as a specific embodiment, N2/N462 > N2 range of N2 (as a range of N2/N1) N1: N2 ═ 1: 0.9).

In the present embodiment, it is assumed that the elastic force of the elastic element, i.e., the unlocking main spring, is F, F1 ═ F × sin θ provided to the power portion 3122 after F is decomposed, F2 ═ F × sin θ (L1/L2) transmitted to the resistance portion 3123 of the lever structure 312 by the power portion 3122 of the lever structure 312, μ ═ F2 μ ═ F sin θ (L1/L2) transmitted to the resistance portion 3123 of the second limit portion 324 of the limit mechanism 32 by friction, and F4 ═ F2 ═ N1 ═ μ × F3 ═ F8542 ═ F3 ═ N1 (L2/N1) ═ F × F1/L890.11250 required for the main friction transmission portion 332 of the drive mechanism 33 to drive the rotation of the limit mechanism 32 from the friction transmission portion 322.

It is only above the preferred embodiment of the utility model, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongings to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An unlocking mechanism is used for being matched with a lock hook to realize unlocking; the lock hook is provided with a first limiting groove which can move between a locking position and an unlocking position;

the method is characterized in that: the unlocking and locking mechanism comprises a bolt mechanism, a limiting mechanism and a driving mechanism; the lock tongue mechanism comprises a lock tongue and a lever structure which drives the lock tongue to rotate between a clamping position and a non-clamping position through rotation; when the lock hook is in the unlocking position, the lock tongue is driven by the lever structure to rotate to the non-clamping position and move out of the first limit groove, and the limit mechanism rotates from the first limit position to the second limit position under the friction transmission of the driving mechanism to provide a space for the lever structure to rotate; when the lock hook is in the locking position, the lock tongue is driven by the lever structure to rotate to the clamping position and clamped into the first limiting groove, and the limiting mechanism is reset from the second limiting position to the first limiting position to limit the lever structure.

2. The deblocking mechanism of claim 1, wherein: the lever structure comprises a rotating fulcrum, a power part and a resistance part which can rotate around the rotating fulcrum; the power part drives the lock tongue and the resistance part to rotate through up-and-down movement; the resistance part is matched with the limiting mechanism and used for limiting the lock tongue mechanism; when the lock hook is located at the locking position, the power part moves downwards under the action of power to drive the lock tongue and the resistance part to rotate along the anticlockwise direction, the lock tongue is clamped into the first limiting groove, and the resistance part abuts against the limiting mechanism which resets to the first limiting position; when the latch hook is in the unlocking position, the power part moves upwards under the action of power to drive the spring bolt and the resistance part to rotate along the clockwise direction, the spring bolt moves out of the first limiting groove, and the resistance part abuts against a limiting mechanism rotating to the second limiting position.

3. The deblocking mechanism of claim 2, wherein: when the lock hook is in a locking position, the power part moves downwards under the abutting action of the lock hook and extrudes an elastic element to drive the lock tongue and the resistance part to rotate along the anticlockwise direction; when the lock hook is in the unlocking position, the power part moves upwards under the action of the elastic force of the elastic element to drive the lock tongue and the resistance part to rotate along the clockwise direction.

4. The deblocking mechanism of claim 3, wherein: the bolt mechanism also comprises a first reset torsion spring; the first reset torsion spring is sleeved on the rotating fulcrum and used for applying clockwise acting force to the lever structure.

5. The deblocking mechanism of claim 2, wherein: the contact point of the power part and the lock hook is an arc tangent plane, and the range of the tangent angle theta of the arc tangent plane of the contact point is more than 0 and less than 90 degrees; the length ratio L1/L2 of the power part to the resistance part ranges from 0 < L1/L2 < 1; the range of the friction coefficient mu between the resistance part and the second limiting part is 0 & ltmu & lt 1.

6. The deblocking mechanism according to any one of claims 1-5, wherein: the driving mechanism comprises an electric driving element and a main friction transmission part which can rotate under the driving of the electric driving element; the limiting mechanism comprises a rotating shaft, a second reset torsion spring sleeved on the rotating shaft, a driven friction transmission part connected to the rotating shaft, at least one first limiting part and at least one second limiting part which is recessed inwards compared with the first limiting part; the follow friction drive portion is in the friction drive of main friction drive portion rotates down, will stop gear rotates to the second limit position, and the spacing portion of second rotates to the orientation lever structure, for lever structure provides pivoted space, or stop gear resets to first limit position under the effect of second reset torsion spring, and first limit portion rotates to the orientation lever structure is right lever structure carries on spacingly.

7. The deblocking mechanism of claim 6, wherein: the outer wall surface of the first limiting portion is the outer side surface of a fan-shaped cylinder, and the second limiting portion is a groove which is opposite to the inner concave outer wall surface of the fan-shaped cylinder.

8. The deblocking mechanism of claim 6, wherein: the outer wall surface of the auxiliary friction transmission part along the circumferential direction is a cylindrical surface; the main friction transmission part is assembled on an output shaft of the electric driving element and can rotate under the driving of the electric driving element; the main friction transmission part is convexly provided with at least two convex parts at intervals along the circumferential direction, and the outer wall surface of each convex part is provided with a fan-shaped cylindrical surface which is used for forming a friction pair with the cylindrical surface.

9. The deblocking mechanism of claim 8, wherein: the range of the transmission ratio N1/N2 of a friction pair formed by the auxiliary friction transmission part of the limiting mechanism and the main friction transmission part of the driving mechanism is (N1/N2) > 1.

10. An intelligent lock, its characterized in that: comprising the unlocking structure of any one of claims 1-9 and the latch hook cooperating with the unlocking; the lock also comprises a lock body and a circuit module; the circuit module is electrically connected with the driving mechanism and used for controlling the action of the driving mechanism; the lock body is used for providing an accommodating space for accommodating the unlocking mechanism and the circuit module.