CN111456567B

CN111456567B - Lock core and lock

Info

Publication number: CN111456567B
Application number: CN202010504307.0A
Authority: CN
Inventors: 李保福; 杨绍华; 李启平; 张永成
Original assignee: Zhuhai Youte IoT Technology Co Ltd
Current assignee: Zhuhai Unitech Power Technology Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-07-23
Anticipated expiration: 2040-06-04
Also published as: CN111456567A

Abstract

The application relates to an intelligence tool to lock field, concretely relates to lock core and tool to lock, the lock core setting is equipped with the lockhole that supplies the lock roof beam to wear to establish in the lock body of tool to lock. The lock core includes spring bolt, locking head piece, motor and elasticity energy storage piece, and the motor passes through elasticity energy storage piece drive locking head piece and removes between primary importance, second place and third position according to the preface, is formed with the spacing face of first spacing face and second on the locking head piece. When the locking top piece is at the first position, the first limiting surface limits the bolt in the extending state to retreat; when the locking top piece is at the second position, the second limiting surface limits the bolt in the semi-extending state to retreat; when the locking top piece is in the third position, the locking top piece gives up space to allow the bolt to retreat. The utility model provides a tool to lock has two locking stages, and the auto-lock can be accomplished in the twinkling of an eye in the spring bolt stretches out to the lock core to can realize first stage locking with the spring bolt half-stretching out state when the shutting is not in place, prevent the potential safety hazard of quick pulling lock beam unblock.

Description

Lock core and lock

Technical Field

The application relates to an intelligent lockset field, particularly to a lock cylinder and a lockset.

Background

In common tool to lock, especially in the tool to lock through the lock beam cooperation locking, the easy condition that appears the front end that the lock beam contradicts the spring bolt leads to the locking ejecting piece can not rise and support and hold the rear end at the spring bolt, if stimulate the lock beam fast this moment, the spring bolt is pushed back by the inclined plane of lock beam breach easily, has the potential safety hazard that can pull out the lock beam.

Disclosure of Invention

The application aims at providing a lock core and a lockset to solve the problem that a lock beam can be pulled out when the locking is not in place in the prior art.

The embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a lock cylinder, which includes a lock tongue, a locking ejecting member, a motor, and an elastic energy storage member, where the motor is configured to drive the locking ejecting member to move through the elastic energy storage member, so that the locking ejecting member has a first position, a second position, and a third position, the second position is between the first position and the third position, and a first limiting surface and a second limiting surface are formed on the locking ejecting member;

when the locking top piece is located at the first position, the first limiting surface limits the bolt in an extending state to retreat;

when the locking top piece is located at the second position, the second limiting surface limits the bolt in a semi-extending state to retreat;

when the locking top piece is located at the third position, the locking top piece gives up space to allow the bolt to retreat.

In the lock core provided by the application, the motor drives the locking ejecting piece to move along the path of 'a first position, a second position and a third position' in a forward direction or a reverse direction in sequence through the elastic energy storage piece, and the locking ejecting piece is provided with a first limiting surface and a second limiting surface. When the locking top piece is at the third position, the first limiting surface and the second limiting surface are both far away from the rear end of the lock bolt so as to allow the lock bolt to retreat, namely, to be in an unlocking state. In the locking process, the locking top piece moves to the second position firstly and then moves to the first position, the second limiting surface passes through the rear end of the lock tongue and the rear end of the lock tongue after passing through the first limiting surface, and the rear end of the lock tongue is an action position capable of preventing the lock tongue from moving backwards. The distance from the first limiting surface to the bolt outlet is L1 when the first limiting surface is at the rear end of the bolt, and the distance from the second limiting surface to the bolt outlet is L2 when the second limiting surface is at the rear end of the bolt, in the embodiment of the application, L1 is less than L2, that is, the first limiting surface is closer to the bolt outlet than the second limiting surface in the acting position, the second limiting surface blocks the partial retreating distance of the bolt, and the first limiting surface blocks the whole retreating distance of the bolt. Under normal conditions, the locking top piece directly moves to the first limiting surface to abut against the rear end of the spring bolt, so that the spring bolt is in an extending state to realize locking. If the lock tongue is not exactly aligned with the notch of the lock beam during locking but is in a semi-extension state supported by the inclined surface of the notch, the elastic energy storage part drives the locking top part to move instantly, the second limiting surface which passes through first can be supported at the rear end of the lock tongue to limit the lock tongue to retreat, so that the lock tongue in the semi-extension state cannot be pulled out, the lock beam can still be locked by the lock tongue, and the lock beam cannot be pulled out when the lock is not in place; in a half-extending state, because the motor rotates in place, the locking ejecting piece does not move in place, the elastic energy storage piece accumulates elastic force at the moment, and when the spring bolt is relieved from external force and extends out completely, the elastic energy storage piece releases the elastic force to drive the locking ejecting piece to move in place to the first position, so that the first limiting surface of the locking ejecting piece abuts against the rear end of the spring bolt, and delayed locking is realized.

Therefore, the lock core provided by the embodiment of the application can complete self-locking at the moment of locking and the moment of extending the lock tongue, namely, the lock core can realize first-stage locking in a state that the lock tongue is extended halfway when the locking is not in place, so that the potential safety hazard of quickly pulling the lock beam to unlock is prevented; and as long as realize the locking back when the spring bolt is half stretched out, once the external force that the spring bolt received is relieved and continues to stretch out, the locking ejecting member just can continue to move to the second stage locking, and the security is high.

In an embodiment of the present application, optionally, the lock cylinder further includes a lock tongue reset member, and the lock tongue reset member is configured to drive the lock tongue to extend.

In the technical scheme, the spring bolt reset piece is arranged, so that the spring bolt is in an elastic extending state in a natural state, the moving path of the locking top piece is smooth when the external force of the spring bolt is relieved, and the locking top piece is favorable for moving to realize further locking.

In an embodiment of the present application, optionally, the first limiting surface and the second limiting surface are perpendicular to the extending direction of the lock tongue.

In the technical scheme, the first limiting face and the second limiting face are perpendicular to the telescopic direction of the lock tongue, the stress of the first limiting face and the second limiting face is perpendicular to the plane where the first limiting face and the second limiting face are located, the position of the locking ejecting piece is not prone to being changed, and the locking ejecting piece is stable in abutting.

In an embodiment of the application, optionally, be equipped with on the locking top member and connect the face, it forms to connect the face first spacing face with between the spacing face of second, first spacing face connect the face with the spacing face of second forms the Z shape.

In the technical scheme, the first limiting surface, the connecting surface and the second limiting surface form a Z shape, namely the first limiting surface and the second limiting surface are two step surfaces, so that the structure is simple and compact, and the support is stable.

In an embodiment of the application, optionally, the elastic energy storage member includes a guide spring, the guide spring is sleeved on the output shaft of the motor, a radial pressure rod is arranged on the output shaft of the motor, the radial pressure rod penetrates through a coiling gap of the guide spring, and one end of the guide spring is relatively fixed to the locking ejection member.

In the technical scheme, the motor can drive the radial pressure rod to rotate, the radial pressure rod moves along the spiral ring of the guide spring when rotating, so that the guide spring can move along the axial direction relative to the output shaft of the motor, and the locking top piece fixedly connected with one end of the spring is driven. The motor passes through the indirect drive power that opens the shutting of guide spring, reduces the motor and provides, can adopt the miniwatt motor, realizes energy-conserving effect to the general volume of miniwatt motor is littleer, thereby the whole smaller and more exquisite of lock core.

In one embodiment of the present application, optionally, the lock cylinder includes two of the lock tongues.

In the technical scheme, the probability of unsuccessful locking is further reduced by arranging the two lock tongues to be matched with the lock beam.

In an embodiment of the present application, optionally, the locking top is located between two of the lock tongues, and two first limiting surfaces and two second limiting surfaces are formed on the locking top.

In the technical scheme, the two first limiting surfaces and the two second limiting surfaces are respectively matched with the two lock tongues, so that the probability of unsuccessful locking is further reduced.

In an embodiment of the application, optionally, the lock core still includes the lock courage, be equipped with the key hole on the lock courage, the lock courage rotates and can drive the motion of locking ejecting member.

In above-mentioned technical scheme, through setting up the lock courage, under the unsuccessful condition of motor unblock, can drive the motion of locking ejecting member through the lock courage with the key, realize the mechanical forced unblock. When the friction force between the lock tongue and the locking top piece is too large, the lock can be unlocked in a mechanical forced unlocking mode, and the problem that the lock tongue cannot be unlocked due to the fact that the lock tongue is pressed to dead against the locking top piece is solved; after the lock is unlocked, the motor does not rotate, and the locking top piece moves, so that the elastic energy storage piece connected with the motor and the locking top piece deforms to store energy, and when the lock cylinder is reversely rotated, the elastic energy storage piece can release the stored energy to be mechanically locked again.

In an embodiment of the application, optionally, still be equipped with the direction inclined plane on the locking ejecting member, the lock core still includes gear and rack, the gear coaxial fixation is in the lock courage, the rack with gear engagement, the one end of rack with the inclined plane of direction forms the inclined plane cooperation.

In the technical scheme, the lock cylinder is matched with the locking ejecting piece through the telescopic rack and the guide inclined plane, and the lock cylinder drives the rack to slide along the inclined plane when extending out, so that the locking ejecting piece is pressed downwards, and the locking ejecting piece moves to a third position to be unlocked; under the state of unblanking, the locking head-stock compression elasticity energy storage piece energy storage, when the lock courage drive rack withdrawed, the locking head-stock can reply to first position in order to lock the spring bolt under the effect of elasticity energy storage piece.

In a second aspect, an embodiment of the present application provides a lock, which includes a lock body, a lock beam and the lock cylinder, the lock cylinder is disposed in the lock body, the lock body is provided with a lock hole for the lock beam to penetrate.

In the technical scheme, the lock cylinder of the lock can not return in the state that the lock tongue is semi-extended, the potential safety hazard of quickly pulling the lock beam to unlock is prevented, the lock beam can be continuously and lightly moved to realize normal locking under the action of the elastic energy storage piece, and the safety is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a lock according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a lock body according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a lock cylinder provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of an energy storage second-order locking mechanism of a lock cylinder provided in an embodiment of the present application;

fig. 5 is an external structural view of a locking top provided by an embodiment of the application;

FIG. 6 is a schematic structural diagram of a locking top piece, an elastic energy storage piece and a motor provided by the embodiment of the application;

fig. 7 is an exploded view of a mechanical unlocking mechanism of a lock cylinder provided in an embodiment of the present application;

fig. 8 is a schematic diagram illustrating a second-order locking mechanism and a mechanical unlocking mechanism according to an embodiment of the present disclosure;

FIG. 9 is a diagram illustrating a lock with a latch bolt retracted under force according to an embodiment of the present disclosure;

FIG. 10 is an enlarged view of portion A of FIG. 9;

FIG. 11 is a schematic view of a lock according to an embodiment of the present application being locked in a semi-extended state;

FIG. 12 is an enlarged view of portion B of FIG. 11;

FIG. 13 is a schematic view of a lock according to an embodiment of the present application being locked in an extended state;

FIG. 14 is an enlarged view of portion C of FIG. 13;

FIG. 15 is a schematic view of a lock according to an embodiment of the present application in an electronically unlocked state;

FIG. 16 is an enlarged view of portion D of FIG. 15;

FIG. 17 is a schematic view of a lock according to an embodiment of the present application in a mechanically unlocked state;

fig. 18 is an enlarged view of a portion E of fig. 17.

Icon: 10-a lock body; 11-a housing; 12-upper cover; 13-a lock hole; 20-a lock beam; 30-a lock cylinder; 31-an inner shell; 32-a first cover; 33-a second cover; 34-a USB interface; 35-a battery; 40-energy storage second-order locking mechanism; 50-a mechanical unlocking mechanism; 100-a motor; 110-an output shaft; 120-radial strut; 200-locking the top piece; 210-a limiting part; 211-a first limit surface; 212-a second limit surface; 213-connecting face; 220-a guide bar; 221-a guide slope; 230-a slider; 300-a bolt; 310-bolt reset piece; 400-an elastic energy storage member; 500-fixing the sleeve; 600-a lock liner; 610-a gear; 620-rack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Examples

In the practical application of intelligent lockset, if the lockset is locked by a lock beam, the hidden danger of locking failure exists. For example: when the user inserts the lock beam, under the breach of lock beam and the spring bolt unalignment's the condition, the spring bolt is the withdrawal state this moment, after time delay shutting or the manual click closed lock, if it is very fast to extract the lock beam speed, the spring bolt is when getting into the breach of lock beam, appears not popping out completely easily and is pushed back by the breach lower extreme inclined plane of next lock beam, leads to the locking ejecting piece to be blocked by the spring bolt always, can't reach the shutting position, makes the unable locking of lock beam, can be pulled out, causes the shutting failure.

The tool to lock that this implementation provided can solve and to lock when not in place can pull out the lock beam and lead to the technical problem of shutting failure.

Referring to fig. 1 and 2, the shackle 20 includes a lock body 10, a shackle 20, and a key cylinder 30. The lock body 10 includes a housing 11 and a top cover 12, and the key cylinder 30 is accommodated in the housing 11 and closed by the top cover 12.

Referring to fig. 3, the key cylinder 30 includes an inner housing 31, a first cover 32 and a second cover 33, the first cover 32 is located above the inner housing 31, and the second cover 33 covers the front surface of the inner housing 31. The first lid 32 corresponds to the upper lid 12 of the housing 11 of the lock body 10, and the battery 35 in the key cylinder 30 can be taken out and replaced by opening the upper lid 12 and the first lid 32 in this order. The second cover 33 is used to shield the internal operating mechanism of the key cylinder 30. The bottom of the inner shell 31 is provided with a USB interface 34, and the bottom of the outer shell 11 is correspondingly provided with an openable and closable dust cover, and the USB interface 34 can be exposed by opening the dust cover so as to charge the battery 35 in the lock cylinder 30.

The lock body 10 is further provided with locking holes 13 penetrating the upper cover 12 and the housing 11, the locking holes 13 being located at both sides of the key cylinder 30, and the lock beam 20 for being inserted into the locking holes 13. The internal operation mechanism of the key cylinder 30 includes a latch tongue 300, and the latch tongue 300 can be extended to the lock hole 13 to lock the latch tongue 300 with the notch of the lock beam 20.

The internal operating mechanism of the lock cylinder 30 further includes a second-order energy-storing locking mechanism 40, which is shown in fig. 3 and 4.

The energy storage second-order locking mechanism 40 comprises a locking top piece 200, a motor 100 and an elastic energy storage piece 400. The motor 100 is connected with the locking top piece 200 through the elastic energy storage piece 400, and the locking top piece 200 is driven to move up and down through the elastic energy storage piece 400 when the motor 100 rotates.

The movement path of the locking head 200 includes a first position, a second position, and a third position in this order. Illustrated in the orientation of fig. 4, the third position is shown in fig. 4, and the locking tip 200 is moved upward to the second position, the first position, in turn.

The locking top 200 is formed with a stopper 210, as shown in fig. 5. When the locking top 200 is in the third position shown in fig. 4, the stopper portion 210 does not reach the rear end of the locking tongue 300, and does not prevent the locking tongue 300 from retreating. When the locking top 200 is at the first position and the second position, the position-limiting part 210 is located at the rear end of the locking bolt 300, and can prevent the locking bolt 300 from moving backwards. The position-limiting portion 210 has a first position-limiting surface 211 and a second position-limiting surface 212, and the first position-limiting surface 211 is located below the second position-limiting surface 212. When the position-limiting part 210 is at the second position, the second position-limiting surface 212 is located at the rear end of the lock tongue 300, and the distance from the second position-limiting surface 212 to the lock tongue outlet (i.e., the opening formed in the lock cylinder 30 for allowing the lock tongue 300 to extend out) is L2; when the position-limiting part 210 is at the first position, the first position-limiting surface 211 is located at the rear end of the lock tongue 300, and the distance from the first position-limiting surface 211 to the lock tongue outlet is L1; l1 < L2.

That is, during the movement of the locking tip 200 from the third position to the first position: when the locking top part 200 is located at the third position, the first limiting surface 211 and the second limiting surface 212 are both far away from the lock tongue 300, as shown in fig. 4, the first limiting surface 211 and the second limiting surface 212 are below the height of the lock tongue 300, and the locking top part 200 cannot block the lock tongue 300 from returning; when the locking top piece 200 moves to the second position, the second limiting surface 212 is located at the rear end of the lock tongue 300, so that the lock tongue 300 in a half-extended state can be limited to retreat, that is, the lock tongue 300 can be kept at least half-extended; when the locking top part 200 moves to the third position, the second limiting surface 212 passes through the rear end of the locking bolt 300, and the first limiting surface 211 is located at the rear end of the locking bolt 300 to limit the locking bolt 300 in the extended state from moving backwards.

Through setting up the locking top 200 that has two kinds of spacing faces, the spacing face 212 of second of spacing portion 210 moves back the platform for first spacing face 211, the tool to lock can stretch out at the spring bolt 300 and realize first stage shutting in the twinkling of an eye, and can realize the second stage shutting when the spring bolt 300 is all stretched out, when the spring bolt 300 is blocked by the breach inclined plane of lock beam 20 or is in half the state of stretching out under other exogenic actions, the spacing face 212 of second of spacing portion 210 can reach the rear end of lock bolt 300 at least, make the spring bolt 300 can not continue to retreat, can pull out lock beam 20's technical problem when solving the shutting and not in place.

The limiting part 210 of the locking top piece 200 can be as shown in fig. 6, the body of the locking top piece 200 is arranged at the bolt 300, a first limiting surface 211 and a second limiting surface 212 which are convex are formed on the body of the locking top piece 200, and the first limiting surface 211 and the second limiting surface 212 are connected by a connecting surface 213 to form a Z-shaped step-shaped structure. With this arrangement, the locking head 200 needs to occupy a small space in the moving direction, so that the lock cylinder 30 is more compact.

Alternatively, the limiting portion 210 of the locking top 200 may also be such that the body of the locking top 200 is located below the locking tongue 300, and the limiting portion 210 is a two-step formed at the top of the locking top 200.

Because the motor 100 has rotated to the right position after receiving the locking command, and the locking top part 200 does not move up to the right position, the elastic energy storage part 400 is in the state of compression energy storage, when the external force applied to the latch bolt 300 is removed, for example, when the lock beam 20 moves slightly to separate the inclined surface from the latch bolt 300, the elastic energy storage part 400 can release the accumulated elastic force to realize delayed locking, and at this time, the latch bolt 300 normally extends out of the notch to lock the lock beam 20.

There are various ways of connecting the motor 100, the elastic energy storage member 400 and the locking head member 200. In the present embodiment, the method shown in fig. 5 is employed. The elastic energy storage member 400 is configured as a guide spring, the output shaft 110 of the motor 100 is formed with a radial pressing rod 120, and the guide spring is sleeved on the output shaft 110, such that the radial pressing rod 120 is inserted into a winding gap of a coil of the guide spring. One end of the guide spring is fixed opposite to the locking head 200, and as shown in fig. 5, the lower end of the guide spring is fixed to the locking head 200, and the other end of the guide spring is optionally fixed to the output shaft 110, or a coming-off prevention portion is provided at an end of the output shaft 110 and the other end of the guide spring is abutted against the coming-off prevention portion.

The locking head 200 may be slidably coupled directly to the inner housing 31 of the lock cylinder 30. Alternatively, a fixing sleeve 500 is provided in the lock cylinder 30 coaxially with the output shaft 110, and the locking head 200 is configured as a coaxial hollow sleeve body. The limiting portion 210 is formed outside the locking top part 200, the protruding sliding block 230 is further formed outside the locking top part 200, a sliding groove (not shown in the figure) along the axial direction is formed in the fixing sleeve 500, the sliding block 230 outside the locking top part 200 is matched with the sliding groove in the fixing sleeve 500, and therefore the moving direction of the locking top part 200 is fixed by the fixing sleeve 500 and is enabled to slide along the axial direction of the fixing sleeve 500.

When the motor 100 rotates, the radial strut 120 on the output shaft 110 moves along the coil of the guide spring from the current coil gap to the adjacent coil gap. Since the height position of the output shaft 110 and the radial strut 120 thereof in the axial direction is not changed, the guide spring moves in the axial direction of the output shaft 110. When the number of turns below the radial strut 120 increases, the guide spring is compressed to drive the locking top part 200 downward; when the number of turns above the radial strut 120 increases or decreases, the guide spring is compressed to drive the locking head 200 upward. When the guide spring moves relative to the output shaft 110 and the locking top 200 is restricted, the guide spring accumulates elastic force, and when the restriction of the locking top 200 is released, the guide spring releases the elastic force to drive the locking top 200 to a proper position.

The locking top 200 and the motor 100 may be connected in other manners. For example, the output end of the motor 100 is provided with a lifting module, and the lifting module is connected with the locking top piece 200 through the elastic energy storage piece 400. The lifting module may be a screw nut assembly connected to the output end of the motor 100, and the elastic energy storage member 400 is an elastic element such as a spring or an elastic sheet connected between the nut and the locking top member 200. The motor 100 and the lifting module may also be replaced with a linear module, an electric push rod, etc.

The latch bolt 300 may be a pin structure as shown in fig. 4, and a latch bolt restoring member 310 is disposed in the lock cylinder 30, and the latch bolt restoring member 310 is configured as a spring sleeved outside the pin.

In other embodiments, the latch tongue 300 may also be other structures, such as the latch tongue 300 configured as a ball. When the lock is closed in a natural state, the locking top member 200 directly moves to the first position, so that the first limiting surface 211 abuts against the ball to close the lock. When the inclined plane is aligned with the extending position of the ball, the top surface and the edge of the limiting portion 210 extrude the ball outwards, so that the locking top part 200 can move to the second position, and the second limiting surface 212 perpendicular to the moving direction of the ball supports against the ball, thereby preventing the ball from returning under stress and realizing the locking at the first stage. When the external force applied to the ball is removed, the elastic energy storage element 400 releases the accumulated elastic force to push the locking top element 200, the connecting surface 213 and the edge thereof continuously extrude the ball outwards, so that the locking top element 200 moves to the first position, the first limiting surface 211 perpendicular to the moving direction of the ball abuts against the ball, and the second stage locking is realized.

In addition, the mechanical unlocking mechanism 50 is further arranged in the lock core 30, the mechanical unlocking mechanism comprises a lock core 600, a key hole is formed in the lock core 600, and a key matched with the key hole can penetrate through the outer shell 11 and the inner shell 31 to enter the key hole to drive the lock core 600 to rotate. When locking, if the external force that the spring bolt 300 received is too big, lead to the spring bolt 300 to compress tightly locking head 200, when the two frictional force leads to motor 100 can't unblank, can use the key to rotate lock courage 600 and drive locking head 200 and move to force the unblock.

As shown in fig. 7, a gear 610 is coaxially fixed to the cylinder 600, a rack 620 is further provided in the key cylinder 30, the rack 620 is engaged with the gear 610, and the rack 620 can be driven to extend and retract with respect to the lock top 200 by rotating the cylinder 600. The locking top part 200 is formed with a guide slope 221, as shown in fig. 5, a convex guide strip 220 is formed on the surface of the locking top part 200, the guide slope 221 is formed on the guide strip 220, and one end of the rack 620 near the locking top part 200 is in slope fit with the guide slope 221. When the rack 620 extends out towards the locking top piece 200, the locking top piece 200 can be driven to move to a third position for unlocking; in the unlocking state, the locking top member 200 compresses the elastic energy storage member 400 to store energy, and when the lock core 600 is rotated to drive the rack 620 to retract, the elastic energy storage member 400 releases elastic force to drive the locking top member 200 to return to the first position.

Fig. 8 shows a schematic diagram of a state of locking the lock, where the mechanical unlocking mechanism 50 is in an original state, the rack 620 is retracted, the energy storage second-order locking mechanism 40 is in a locked state, the locking top 200 is in a first position, and the first limiting surface 211 abuts against the lock tongue 300.

Although only two limiting surfaces are provided in the embodiment, within the scope of the inventive concept of the present application, more than two limiting surfaces may be disposed on the locking top part 200, and when there are a plurality of limiting surfaces, the lock has a plurality of locking stages to realize discontinuous multi-stage locking, further ensuring that the locking assembly can be blocked at the rear end of the locking bolt 300 at the moment when the locking bolt 300 extends out, and solving the problem that the locking bolt 300 retreats when the lock beam 20 is quickly pulled out.

Optionally, the key cylinder 30 may be provided with two locking tongues 300, and the two locking tongues 300 may be matched with the same notch, or may be respectively disposed on two sides of the key cylinder 30 as in this embodiment. Accordingly, in the present embodiment, the lock holes 13 are configured in two, the lock beam 20 is configured in a U-shaped lock with notches on both sides, and the limiting portion 210 of the locking top member 200 forms two first limiting surfaces 211 and two second limiting surfaces 212.

The following is a description of the locking and unlocking process of the lock provided in this embodiment.

Fig. 9 shows a state in which the latch tongue 300 is completely retracted by an external force, and fig. 10 shows a state in which the locking top 200 and the latch tongue 300 are engaged. The locking head 200 is located at the third position and the latch tongue 300 is blocked on the moving path of the locking head 200.

The electronic locking process comprises a normal locking process and an abnormal locking process.

And (3) electronic normal locking process:

the latch 300 is aligned with the notch of the strike 20, the latch 300 is extended under the action of the latch resetting element 310, the motor 100 is rotated to the right position, the elastic energy storage element 400 drives the locking top element 200 to move from the third position to the first position directly, and two locking stages are directly completed, which are shown in fig. 13 and 14.

Electronic abnormal locking process:

the motor 100 rotates in place, and the elastic energy storage member 400 is compressed;

when the strike 20 moves, the bolt 300 extends under the action of the bolt resetting member 310, and at the moment of extending, the inclined surface of the next gap of the strike 20 abuts against the front end of the bolt 300, the elastic energy storage member 400 drives the lock top member 200 to move upwards to be located at the second position, and at this time, the second limit surface 212 abuts against the rear end of the bolt 300, so that the first-stage locking as shown in fig. 11 and 12 is realized, and at this time, the elastic energy storage member 400 still stores elastic force;

when the external force applied to the latch tongue 300 is removed, that is, the lock beam 20 is moved, the inclined surface of the lock beam 20 is released, the latch tongue 300 continues to extend under the action of the latch tongue return member 310, at the moment of extension, the elastic energy storage member 400 drives the locking top member 200 to move upward to be located at the first position, and at this moment, the first limit surface 211 abuts against the rear end of the latch tongue 300, so that the second stage locking as shown in fig. 13 and 14 is realized.

The electronic unlocking process comprises a normal unlocking process and an abnormal unlocking process.

Electronic normal unlocking process:

the motor 100 rotates in place, the elastic energy storage element 400 drives the locking top element 200 to move downwards to the third position for unlocking, as shown in fig. 15 and 16, the lock tongue 300 can be retracted by pulling the lock beam 20, and the lock beam 20 is directly pulled out to realize unlocking.

Electronic abnormal unlocking process:

the bolt 300 presses the first limit surface 211 under the action of external force;

when the motor 100 rotates in place, the elastic energy storage element 400 compresses for energy storage;

when the external force applied to the locking tongue 300 is removed, the elastic energy storage element 400 releases the elastic force to drive the locking top element 200 to move down to the third position, and the lock beam 20 is pulled out to complete unlocking.

When the external force applied to the locking bolt 300 is too large to release the locking bolt, the unlocking operation can be controlled by the mechanical unlocking mechanism 50. As shown in fig. 17 and 18, the key is inserted to drive the lock cylinder 600 to rotate, so as to drive the rack 620 to extend toward the locking top piece 200, and one end of the rack 620 is matched with the guide inclined surface 221 and continuously extends until the locking top piece 200 is pressed down to the third position, and the lock beam 20 is pulled out, so that unlocking is completed.

After the mechanical unlocking mechanism 50 is unlocked, the elastic energy storage member 400 maintains the compressed energy storage state. When the lock is to be closed again, the lock beam 20 is inserted into the lock hole 13, the key is inserted into the cylinder 600, the cylinder 600 is rotated to retract the rack 620, and the elastic energy storage element 400 releases the elastic force to push the locking top element 200 to return to the first position to close the lock.

Abnormal locking may occur during mechanical lock closing, such as when the front end of the lock tongue 300 abuts against the lock beam 20, and the elastic energy storage element 400 keeps compressing and storing energy;

when the lock beam 20 moves, the lock tongue resetting piece 310 drives the lock tongue 300 to extend, and at the moment of extending, the elastic energy storage piece 400 drives the locking top piece 200 to move upwards to be located at the second position, and at the moment, the second limiting surface 212 abuts against the rear end of the lock tongue 300, so that first-stage locking is realized, and at the moment, the elastic energy storage piece 400 still stores elastic force;

when the inclined plane of the lock beam 20 is released, and the external force applied to the latch tongue 300 is removed, the latch tongue 300 continues to drive the reset piece latch tongue 300 to extend, the elastic energy storage piece 400 drives the locking top piece 200 to move upwards to enable the locking top piece to be located at the first position, and at the moment, the first limiting surface 211 abuts against the rear end of the latch tongue 300, so that the second-stage locking is realized.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The lock core is characterized by comprising a lock tongue, a locking ejecting piece, a motor and an elastic energy storage piece, wherein the motor is used for driving the locking ejecting piece to move through the elastic energy storage piece so that the locking ejecting piece is provided with a first position, a second position and a third position, the second position is between the first position and the third position, and a first limiting surface and a second limiting surface are formed on the locking ejecting piece;

2. The lock core of claim 1, further comprising a latch bolt reset for actuating the extension of the latch bolt.

3. The lock core of claim 1, wherein the first and second limiting surfaces are perpendicular to the extension direction of the lock tongue.

4. The lock core according to claim 3, wherein a connecting surface is formed on the locking top piece, and the connecting surface connects the first limiting surface and the second limiting surface to form a second-order stepped structure.

5. The lock core according to claim 1, wherein the elastic energy storage member comprises a guide spring, the guide spring is sleeved on an output shaft of the motor, a radial compression bar is arranged on the output shaft of the motor, the radial compression bar is arranged in a winding gap of the guide spring in a penetrating manner, and one end of the guide spring is fixed relative to the locking ejection member.

6. The lock core of claim 1, wherein the lock core includes two of the locking tongues.

7. The lock core according to claim 6, wherein the locking top piece is located between two lock tongues, and two first limiting surfaces and two second limiting surfaces are formed on the locking top piece.

8. The lock core according to claim 1, further comprising a lock core, wherein a key hole is formed in the lock core, and the lock core can drive the locking ejector to move by rotating.

9. The lock core of claim 8, wherein the locking top piece is further provided with a guiding inclined plane, the lock core further comprises a gear and a rack, the gear is coaxially fixed on the lock core, the rack is meshed with the gear, and one end of the rack forms an inclined plane fit with the guiding inclined plane.

10. A lock, characterized in that, including lock body, lock beam and the lock core of any one of claims 1-9, the lock core is arranged in the lock body, and the lock body is provided with a lock hole for the lock beam to penetrate.