CN212743648U

CN212743648U - Safety lock body structure of two-stage protection

Info

Publication number: CN212743648U
Application number: CN202020937084.2U
Authority: CN
Inventors: 何鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-09
Filing date: 2020-05-28
Publication date: 2021-03-19
Anticipated expiration: 2030-05-28

Abstract

A safety lock body structure with two-stage protection relates to the technical field of safety door locks. The problem of current lock exist the security poor, or with high costs, the inconvenient technique of operation etc. not enough is solved, the scheme of adoption is: a locking support is further arranged in the lock shell, a locking block is arranged on the locking support, and a locking support reset spring is further arranged between the locking support and the lock shell; a locking clamping groove is formed in the side wall of the main lock tongue support, and the locking support is also connected with an electromagnetic driving mechanism for driving the locking support to enable the locking block to be separated from the locking clamping groove; when the handle on the inner side of the door rotates reversely, the main spring bolt support is pushed through the inner shifting piece of the arc, so that the main spring bolt extends out, and after the main spring bolt support extends in place, the main spring bolt support is locked by the locking support, and the door is locked conveniently. The door can be locked very conveniently inside and outside the door, and the unlocking is realized through intelligent verification and key combination outside the door, so that the safety is high.

Description

Safety lock body structure of two-stage protection

Technical Field

The invention relates to the technical field of safety door locks.

Background

The traditional door lock is mainly unlocked by a simple key, the anti-theft effect is poor, the key is easy to copy, and the key lock cylinder is easy to illegally open; other pure passwords control the intelligent door lock, the passwords are easy to be obtained by peeping, and the safety is poor; although the existing door lock on the market can be opened only after the double verification of the key and the intelligent verification is needed, the door lock has the defects of complex structure, high cost and complex and inconvenient operation of locking and unlocking the door.

Disclosure of Invention

In summary, the present invention is directed to a two-stage safety lock structure for solving the technical problems of poor safety, high cost, and inconvenient operation of the existing door lock.

In order to solve the technical problems provided by the invention, the technical scheme is as follows:

a two-stage protection safety lock body structure comprises a lock shell, a main spring bolt arranged in the lock shell, and a main spring bolt support connected with the main spring bolt; the method is characterized in that: a main spring bolt reset spring for driving the main spring bolt to retract into the lock shell is arranged between the main spring bolt support and the lock shell;

a locking support is further arranged in the lock shell, a locking block is arranged on the locking support, and an elastic pushing locking support is further arranged between the locking support and the lock shell to enable the locking block on the locking support to be elastically abutted against a locking support reset spring on the side wall of the main spring bolt support; a locking clamping groove is formed in the side wall of the main lock tongue support, and the locking clamping groove is matched and clamped with a locking block on the locking support when the main lock tongue is in an extending state; the locking bracket is also connected with an electromagnetic driving mechanism for driving the locking bracket to separate the locking block from the locking clamping groove;

the lock shell is internally provided with a main spring bolt driving bracket for driving the main spring bolt bracket to push the main spring bolt out of the main spring bolt driving mechanism of the lock shell.

The technical scheme for further limiting the invention comprises the following steps:

the lock also comprises a movable spring bolt arranged in the lock shell, a movable spring bolt support connected with the movable spring bolt is also arranged in the lock shell, and a movable spring bolt reset spring for elastically driving the movable spring bolt to extend and reset is arranged between the movable spring bolt support and the lock shell; the inner side wall plate of the lock shell is provided with an inner door handle connecting shaft, and the outer side wall plate of the lock shell is provided with an outer door handle connecting shaft;

the main bolt driving mechanism comprises: the locking support is provided with an unlocking pin shaft which is pushed to push the locking support to push the locking block to be separated from the locking clamping groove by being pushed reversely by the arc-shaped inner plectrum; a movable lock tongue poking rod is further arranged on the arc-shaped inner poking piece, and a movable lock tongue unlocking driving mechanism for driving the movable lock tongue support to retreat in the reverse poking process of the arc-shaped inner poking piece is further arranged between the movable lock tongue poking rod and the movable lock tongue support;

the arc-shaped outer poking piece is arranged in the lock shell and is fixedly connected with the door outer handle connecting shaft for poking the main spring bolt to extend forwards;

the lock shell is characterized in that a lock core connecting shaft is arranged on the outer side wall plate of the lock shell, and a lock core unlocking pin shaft for shifting the movable bolt support to retreat is arranged on the non-axial center position on the end surface of the lock core connecting shaft.

The lock is characterized in that a back-locking connecting shaft is arranged on a side wall plate in the lock shell, a movable spring bolt blocking piece is arranged in the lock shell, and a back-locking pin shaft for shifting the movable spring bolt blocking piece to move horizontally to a position for blocking the movable spring bolt support to retreat is arranged on the non-axial center position on the end surface of the back-locking connecting shaft.

An emergency unlocking shifting piece is also inserted into the lock shell, and the emergency unlocking shifting piece is in poking connection with the side edge of the locking support in a matching mode; the lock cylinder connecting shaft is further connected with an emergency plectrum stopping piece used for stopping the emergency unlocking plectrum from rotationally stirring the locking support.

The lock is characterized in that more than two main lock tongues are arranged on the main lock tongue support side by side, more than two horizontal guide grooves which are arranged in parallel are arranged on the main lock tongue support, a group of roller mechanisms are arranged in each horizontal guide groove, and the roller mechanisms are connected with the lock shell through roller shafts in a supporting manner.

The locking support is provided with a longitudinal guide limiting groove, and the longitudinal guide limiting groove is in supporting connection with the lock shell through a limiting column; the movement direction of the locking bracket is perpendicular to the movement direction of the main lock tongue; one end of the locking support is connected with the lock shell through the locking support reset spring, and the other end of the locking support is hinged with an electromagnetic driving mechanism through a linkage push rod.

The electromagnetic driving mechanism comprises an electromagnet, an iron core of the electromagnet is connected with an electromagnet pull rod, a pull rod limiting groove axially arranged with the electromagnet is arranged on the electromagnet pull rod, and a pull rod limiting pin connected with a lock shell support is arranged in the pull rod limiting groove; the linkage push rod is hinged with the electromagnet pull rod.

The movable lock bolt unlocking driving mechanism between the movable lock bolt poking rod and the movable lock bolt support is a lever driving mechanism and comprises a lever, the middle part of the lever is connected with a lock shell support through a lever shaft, one end of the lever is arranged in the rotating and poking range of the movable lock bolt poking rod, one end of the lever is arranged on an unlocking pushing piece on the movable lock bolt support, and the end of the lever, which is arranged on the movable lock bolt support, is positioned on one side, close to the movable lock bolt, of the unlocking pushing piece.

The movable spring bolt blocking piece is longitudinally connected with the inner wall of the lock shell in a sliding mode, the movable spring bolt blocking piece comprises a blocking piece matched with the movable spring bolt support, a strip-shaped groove with the width matched with the size of the counter lock pin shaft is horizontally formed in the movable spring bolt blocking piece, and the counter lock pin shaft is arranged in the strip-shaped groove.

The inner side surface and the outer side surface of the main spring bolt support are respectively provided with an inner pulley and an outer pulley which are in contact with the inner side surface and the outer side surface of the arc-shaped shifting piece and the side edge of the arc-shaped shifting piece in a matched mode through idler wheels.

The electromagnetic driving mechanism is electrically connected with a fingerprint verification module, a password verification module, a face recognition module, an intelligent card recognition module or a remote network communication module.

The main bolt driving mechanism comprises: at least two groups of electromagnetic driving mechanisms fixedly installed with the lock shell, and each group of electromagnetic driving mechanisms are connected with the main bolt bracket by adopting a step-by-step transmission driving structure in the same direction.

The invention has the beneficial effects that: the door lock can conveniently realize locking and unlocking, the handle on the inner side of the door pushes the locking support to translate through positive rotation so as to release the main spring bolt support, the main spring bolt support drives the main spring bolt to retract into the lock shell under the action of the main spring bolt reset spring, and meanwhile, in the positive rotation process of the handle on the inner side of the door, the movable spring bolt support is driven to compress the movable spring bolt reset spring to retreat through the movable spring bolt unlocking driving mechanism, so that the indoor unlocking effect of the door lock is achieved; when the handle on the inner side of the door rotates reversely, the main spring bolt support is pushed through the inner shifting piece of the arc, so that the main spring bolt extends out, and after the main spring bolt support extends in place, the main spring bolt support is locked by the locking support, and the door is locked conveniently. The locking principle of the handle on the outer side of the door is similar to that of the handle on the inner side of the door, when the intelligent lock is required to be unlocked outside the door, after the intelligent module passes identity verification, the electromagnetic driving mechanism is electrified, the locking support is pushed to translate under the action of the electromagnetic driving mechanism, so that the main lock tongue support is released, and the main lock tongue is driven by the main lock tongue support to retract into the lock shell under the action of the main lock tongue reset spring; in addition, it should be noted that: before the electromagnetic driving mechanism is required to execute the unlocking action, the movable bolt support is driven by the key to compress the movable bolt return spring to retreat, and the outdoor unlocking effect can be achieved. The door can be locked very conveniently inside and outside the door, and the unlocking is realized through intelligent verification and key combination outside the door, so that the safety is high.

Drawings

FIG. 1 is a schematic perspective view of the present invention during its application;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is an exploded view of FIG. 2;

FIG. 5 is a schematic perspective view of the lock housing of the present invention in an open position;

FIG. 6 is a schematic view of the present invention without the lock housing;

FIG. 7 is a schematic view of another embodiment of the present invention without the lock housing;

FIG. 8 is an exploded view of FIG. 6;

FIG. 9 is an exploded view of FIG. 7;

FIG. 10 is a schematic perspective view of another embodiment of the present invention;

FIG. 11 is a schematic view of the internal structure of the embodiment of FIG. 10;

fig. 12 is a schematic view of the main bolt actuator configuration of the arrangement of fig. 10 prior to energization;

fig. 13 is a schematic diagram illustrating the main bolt driving mechanism of fig. 10 during power-on locking;

fig. 14 is a schematic view of the main bolt driving mechanism of fig. 10 after being locked.

Detailed Description

The structure of the present invention will be further described with reference to the preferred embodiments of the present invention.

Referring to fig. 1 to 9, the two-stage protection safety lock body structure disclosed by the invention comprises a lock case 1, a main bolt 2 and a movable bolt 3 which are arranged in the lock case 1, a main bolt support 21 and a movable bolt support 31 which are respectively connected with the main bolt 2 and the movable bolt 3 are also arranged in the lock case 1, and a main bolt return spring 22 for driving the main bolt 2 to retract into the lock case 1 is also arranged between the main bolt support 21 and the lock case 1; a movable bolt reset spring 32 for elastically driving the movable bolt 3 to extend and reset is arranged between the movable bolt support 31 and the lock shell 1; the shapes of the main bolt 2 and the movable bolt 3 can be the same as the shape of the existing door lock, namely the main bolt 2 is of a cylindrical or cuboid structure, and the movable bolt 3 is of an oblique plane structure. In order to improve the product firmness, more than two main lock tongues 2 are arranged on the main lock tongue support 21 side by side, two cylinders and a cuboid structure are taken as an example in the drawing, and three main lock tongues 2 synchronously and horizontally extend out of the lock shell 1 or retract into the lock shell 1; in order to ensure that three main bolts 2 can be horizontally and synchronously pushed out or retracted, more than two horizontal guide grooves 211 which are arranged in parallel are arranged on the main bolt support 21, in order to ensure that the main bolt support 21 is smooth and smooth in the horizontal moving process, a group of roller mechanisms 212 are arranged in each horizontal guide groove 211, the roller mechanisms 212 are in supporting connection with the lock shell 1 through roller shafts, and in the specific application process of the roller mechanisms 212, bearings with the outer diameters matched with the widths of the horizontal guide grooves 211 can be adopted.

Compared with the existing door lock, the invention is mainly characterized in that a locking support 4 is also arranged in the lock shell 1, and the locking support 4 is mainly used for locking the main bolt support 21 in time after the main bolt 2 extends out of the lock shell 1 to a proper position, so that the main bolt 2 keeps an extending state. The concrete structure is as follows: a locking block 41 is arranged on the locking support 4, and an elastic pushing locking support 4 is arranged between the locking support 4 and the lock shell 1, so that the locking block 41 on the locking support keeps elastically abutted against a locking support reset spring 42 on the side wall of the main bolt support 21; a locking clamping groove 23 is formed in the side wall of the main bolt support 21, and when the main bolt 2 is in an extending state, the locking clamping groove 23 is in matched clamping connection with a locking block 41 on the locking support 4; that is to say that the locking piece 41 is under the effect of locking support reset spring 42, remains all the time with main spring bolt support 21 elasticity butt, and in the main spring bolt support 21 promotion main spring bolt 2 release in-process, locking piece 41 and main spring bolt support 21 elastic contact, and after main spring bolt 2 stretches out the lock shell 1 and arrives predetermined length, locking draw-in groove 23 just with locking piece 41 on the locking support 4 is corresponding, locking piece 41 falls into locking draw-in groove 23 under the effect of locking support reset spring 42, and main spring bolt support 21 is blocked dead, and main spring bolt 2 also can't return in the lock shell 1.

The locking bracket 4 is also connected with an electromagnetic driving mechanism 5 for driving the locking bracket 4 to separate the locking block 41 from the locking clamping groove 23; that is when needing to be with main spring bolt 2 withdrawal lock shell 1 in, electromagnetic drive mechanism 5 circular telegram promotes locking support 4 and compresses locking support reset spring 42, and locking piece 41 breaks away from in locking draw-in groove 23, and main spring bolt support 21 is released, and under the pulling force effect of main spring bolt reset spring 22, main spring bolt support 21 and main spring bolt 2 horizontal translation, main spring bolt 2 withdrawal lock shell 1 in, reach main spring bolt 2 unblock purpose.

The further preferred scheme is as follows: the locking bracket 4 is provided with a longitudinal guide limiting groove 45, and the longitudinal guide limiting groove 45 is in supporting connection with the lock shell 1 through a limiting column 451; the movement direction of the locking bracket 4 is perpendicular to the movement direction of the main bolt 2; one end of the locking support 4 is connected with the lock shell 1 through the locking support reset spring 42, the specific structure can be that the locking support reset spring 42 is sleeved on the locking support 4, the lock shell 1 is folded into a limiting connecting sheet 11 through stamping, the locking support 4 is inserted into a limiting hole on the limiting connecting sheet 11, and the locking support reset spring 42 is abutted against the limiting connecting sheet 11; the other end of the locking bracket 4 is hinged with an electromagnetic driving mechanism 5 through a linkage push rod 51. The electromagnetic driving mechanism 5 comprises an electromagnet 50, an iron core of the electromagnet 50 is connected with an electromagnet pull rod 52, a pull rod limiting groove 521 axially arranged with the electromagnet is arranged on the electromagnet pull rod 52, and a pull rod limiting pin 522 in supporting connection with the lock shell 1 is arranged in the pull rod limiting groove 521; the linkage push rod 51 is hinged with the electromagnet pull rod 52; when the electromagnet 50 is powered on, the electromagnet pull rod 52 horizontally retreats, and as the linkage push rod 51 is of a rigid structure, the linkage push rod 51 can push the locking bracket 4 to move upwards, so that the locking block 41 is separated from the locking clamping groove 23, and the main bolt 2 retracts into the lock shell 1.

The lock shell 1 is internally provided with a main bolt support 21 which is used for driving the main bolt support 21 to translate, so that the main bolt support 21 can push the main bolt 2 out of the main bolt driving mechanism of the lock shell 1. In the specific implementation process, the specific mode that the main bolt 2 pushes out the lock shell 1 can adopt: 1. pushed out from one side in the door by the door inner handle 95; 2. pushed out from the outside of the door by the outside door handle 96; 3. is pushed out by an electromagnetic driving mechanism.

In order to control the main bolt 2 to extend out of the lock shell from one side in the door, the invention realizes locking, an inner side wall plate of the lock shell 1 is provided with an inner door handle connecting shaft 61, and in the application process, the inner door handle connecting shaft 61 is connected with an inner door handle 95 through a square shaft; the main bolt driving mechanism is characterized in that the main bolt driving mechanism is arranged in a lock shell 1, a door inner handle connecting shaft 61 is fixedly connected with a door inner handle and used for forwardly stirring an arc-shaped inner shifting piece 6 extending out of a main bolt, the arc-shaped inner shifting piece 6 is synchronously rotated by the door inner handle connecting shaft 61, a main bolt support 21 is pushed through the arc-shaped inner shifting piece 6, the main bolt 2 extends out, after the main bolt support 21 is stretched in place, the main bolt support 21 is locked by a locking support 4, namely, the door inner handle 95 in a horizontal state is lifted upwards, the main bolt 2 extends out and is locked, and the door inner locking is convenient.

In order to unlock and open the door of the invention at one side in the door, the locking bracket 4 is provided with an unlocking pin shaft 43 which is reversely stirred by the arc-shaped inner stirring sheet 6 to push the locking bracket 4 to push the locking block 41 to be separated from the locking clamping groove 23; that is, when the inner door handle connecting shaft 61 drives the inner arc-shaped shifting piece 6 to rotate reversely, the inner arc-shaped shifting piece 6 drives the locking support 4 to compress the locking support return spring 42 through the unlocking pin shaft 43, the locking block 41 is separated from the locking clamping groove 23, and the main bolt support 21 is released; at this time, because the movable bolt 3 exists, the door cannot be opened directly, therefore, a movable bolt poking rod 62 is also arranged on the arc-shaped inner poking sheet 6, and a movable bolt unlocking driving mechanism 7 is also arranged between the movable bolt poking rod 62 and the movable bolt support 31; the action of the movable bolt unlocking driving mechanism 7 is that when the arc-shaped inner shifting piece 6 controls the locking support 4 to release the main bolt support 21, the movable bolt shifting rod 62 can synchronously control the movable bolt support 31 to retreat, the movable bolt reset spring 32 is compressed, the movable bolt 3 retracts into the lock shell 1, the door opening effect is achieved, namely when the door inner handle 95 in a horizontal state is pressed downwards, the main bolt 2 and the movable bolt 3 both retract into the lock shell 1, and the door inner unlocking is convenient to open.

The specific structure of the movable lock bolt unlocking driving mechanism 7 can adopt a lever driving mechanism, which comprises a lever 71, the middle part of the lever 71 is supported and connected with the lock shell 1 through a lever shaft 72, one end of the lever 71 is arranged in the rotating and shifting range of the movable lock bolt shifting rod 62, one end of the lever 71 is arranged on an unlocking pushing piece 33 on the movable lock bolt support 31, and one end of the lever 71 arranged on the movable lock bolt support 31 is positioned on one side of the unlocking pushing piece 33 close to the movable lock bolt 3. In the specific implementation process, a pull rope structure can be adopted to replace a lever driving mechanism.

In order to lock the invention at one side outside the door, an outer door handle connecting shaft 81 is arranged on the outer side wall plate of the lock shell 1, and the outer door handle connecting shaft 81 is connected with an outer door handle 96 through a square shaft; the main spring bolt driving mechanism is also arranged in the lock shell 1 and is fixedly connected with an outer door handle connecting shaft 81 and used for forwardly toggling the arc-shaped outer poking piece 8 extending out of the main spring bolt 2; the principle of realizing locking is similar with the principle of locking of plectrum 6 realization in the arc, utilizes the outer plectrum 8 of arc to stir main spring bolt support 21 to realize that main spring bolt 2 stretches out, and similarly, main spring bolt 2 stretches out the back that targets in place, and main spring bolt support 21 is locked by locking support 4. Namely, the horizontal door handle 96 is lifted upwards, the main bolt 2 is extended and locked, and the door is conveniently locked.

The arc-shaped inner shifting piece 6 and the arc-shaped outer shifting piece 8 are preferably arranged on the inner side surface and the outer side surface of the main bolt support 21 respectively; in order to reduce the friction between the arc inner plectrum 6 and the arc outer plectrum 8 and the main bolt support 21 and to ensure that the door is locked smoothly and easily, the inner side surface and the outer side surface of the main bolt support 21 are respectively provided with an inner pulley 24 and an outer pulley 25 which are in contact with the arc inner plectrum 6 and the arc outer plectrum 8 side edge matching rollers.

In order to unlock the invention from one side outside the door, a lock core connecting shaft 34 is arranged on the outer side wall plate of the lock shell 1, and a lock core unlocking pin shaft 35 for shifting the movable bolt support 31 to retreat is arranged on the non-axial center position on the end surface of the lock core connecting shaft 34. The specific structure can be that a U-shaped groove 36 is arranged on the movable bolt support 31, the lock core unlocking pin shaft 35 is arranged in the U-shaped groove 36, when a user inserts a key into the lock core 91 from the outside of the door and rotates, the lock core connecting shaft 34 rotates synchronously, the lock core unlocking pin shaft 35 stirs the movable bolt support 31 in the U-shaped groove 36 to compress the movable bolt reset spring 32, and the movable bolt 3 retracts into the lock shell 1; after the user passes the authentication through the fingerprint identification module 92 on the door outer panel, the electromagnetic driving mechanism 5 is electrified to push the locking support 4 to compress the locking support return spring 42, the locking block 41 is separated from the locking clamping groove 23, the main bolt support 21 is released, the main bolt support 21 and the main bolt 2 horizontally translate under the action of the pulling force of the main bolt return spring 22, and the main bolt 2 retracts into the lock case 1, so that the effect of unlocking and opening the door outside the door is achieved.

In the specific implementation process, besides the fingerprint identification module 92, a password identification module, a face identification module, a smart card identification module or a remote network communication module may be used for authentication. The face recognition module mainly collects face information of an unlocking operator through a camera and controls the electromagnetic driving mechanism 5 to be electrified when the face information is consistent with the preset comparison of the system. The remote network communication module is mainly connected with the cloud server through the network communication module for identity verification, and unlocking is carried out by sending an unlocking instruction through a corresponding special application program on the smart phone.

When a person is in a room, in order to prevent the door from being unlocked and open the door, and improve the personal safety, a counter lock connecting shaft 371 is arranged on the inner side wall plate of the lock shell 1, a movable bolt blocking piece 37 is arranged in the lock shell 1, and a counter lock pin shaft 372 which is used for shifting the movable bolt blocking piece 37 to move horizontally to block the movable bolt support 31 from moving backwards is arranged on the non-axial center position on the end surface of the counter lock connecting shaft 371. After the internal back-locking handle 93 rotates 90 degrees, the back-locking connecting shaft 371 is also rotated 90 degrees synchronously, the back-locking pin 372 on the back-locking connecting shaft 371 can stir the movable bolt blocking piece 37 to move upwards, the movable bolt support 31 is blocked to retreat, even if a key is inserted outside the door, the movable bolt support 31 cannot be stirred to retreat, the door cannot be unlocked, and the personal safety inside the door is improved.

The specific structure of the movable bolt blocking piece 37 is as follows: the movable bolt blocking piece 37 is longitudinally connected with the inner wall of the lock shell 1 in a sliding mode, the movable bolt blocking piece 37 comprises a blocking piece 373 matched with the movable bolt support 31, a strip-shaped groove 374 with the width matched with the size of the counter lock pin shaft 372 is horizontally arranged on the movable bolt blocking piece 37, the counter lock pin shaft 372 is arranged in the strip-shaped groove 374, and the movable bolt blocking piece 37 is stirred to move up and down.

In order to avoid the failure of the circuit part of the invention, which leads to the failure of the electromagnetic driving mechanism 5, the invention is also provided with an emergency key lock cylinder 94, the emergency key lock cylinder 94 is closed by a protective cover 941 on the outer panel of the door under normal conditions, an emergency unlocking plectrum 942 connected with the emergency key lock cylinder 94 is also inserted into the lock shell 1, and the emergency unlocking plectrum 942 is in poke connection with the side edge of the push rod 44 on the locking bracket 2 in a matching way; in an emergency situation, the protective cover 941 is removed, an emergency key is inserted, the emergency key cylinder 94 pulls the push rod 44 to move upwards through the emergency unlocking poking piece 942, and the locking support 4 releases the main bolt support 21. In order to prevent the emergency key cylinder 94 from being illegally abused, an emergency plectrum stopping piece 38 for stopping the emergency unlocking plectrum 942 from rotating to stir the locking bracket 4 is also connected to the emergency key cylinder 34; also under the emergency situation, can skip the function of electromagnetic drive mechanism 5 by under two keys combined action, realize the emergent door opening of outdoors.

Referring to another embodiment shown in fig. 10 to 14, the embodiment is different from the embodiment shown in fig. 1 to 9 mainly in that the driving manner of the main bolt driving mechanism is different, and a relatively simple driving manner is adopted, that is, the electromagnetic driving mechanism drives the main bolt support 21 to translate, so that the main bolt support 21 pushes the main bolt 2 out of the lock case 1. The lock specifically comprises at least two groups of electromagnetic driving mechanisms fixedly arranged with the lock shell 1, and each group of electromagnetic driving mechanisms adopts a same-direction step-by-step transmission driving structure to be connected with a main bolt bracket 21. Preferably, two groups of electromagnetic driving mechanisms are adopted and connected with the main bolt bracket 21 by adopting a two-stage transmission driving structure in the same direction; the two groups of electromagnetic driving mechanisms can be two frame type electromagnets.

Because of the limitation of the thickness of the door plate, the size of the electromagnet which can be accommodated by the lock shell 1 is limited, the stroke of a single electromagnet is also limited, and the main bolt 2 cannot be pushed out of the lock shell 1 to achieve a stable locking state, therefore, two frame type electromagnets are adopted in the embodiment, when one frame type electromagnet is electrified and locked, the main bolt support 21 is firstly moved in a pushing mode, and then the other frame type electromagnet is used for moving the main bolt support 21 in a pulling mode.

During the working process, as shown in fig. 11 and 12, the two frame-type electromagnets constituting the main bolt driving mechanism are respectively a first frame-type electromagnet 101 and a second frame-type electromagnet 102, and the improvement points of the first frame-type electromagnet 101 and the second frame-type electromagnet 102 relative to the conventional frame-type electromagnet are that the distance between the frames 1010 is lengthened, and the length of the sliding rod 1011 is lengthened; in fig. 12, after the coil 1012 of the second frame-type electromagnet 102 is energized, an electromagnet is formed, a magnetic thrust is applied to the movable iron core on the sliding rod 1011, the sliding rod 1011 pushes the movable main bolt support 21 and the sliding rod of the first frame-type electromagnet 101 to move horizontally, after the stroke of the second frame-type electromagnet 102 reaches the maximum state, the state shown in fig. 13 is entered, and the movable iron core of the first frame-type electromagnet 101 passively moves to the effective range and is magnetically captured by the coil of the first frame-type electromagnet 101; then, the second frame-type electromagnet 102 is disabled, and under the action of the first frame-type electromagnet 101, the main bolt support 21 is pulled to move to continue to translate until the main bolt support 21 pushes the main bolt 2 out of the lock case 1, until the main bolt support 21 is locked by the locking support 4, and the state shown in fig. 14 is achieved. The unlocking process is the same as the embodiment shown in fig. 1 to 9, and after the locking bracket 4 releases the main bolt bracket 21, the main bolt reset spring 22 drives the main bolt bracket 21 to reset.

The present embodiment can retain or cancel the related structures of the movable bolt (3), the inner door handle 95 and the outer door handle 96 in the embodiments shown in fig. 1 to 9 as required. Under the condition that the movable bolt (3), the inner door handle 95 and the outer door handle 96 are not in related structures, the first frame type electromagnet 101 and the second frame type electromagnet 102 are controlled to be electrified to realize locking after identity verification is carried out through various conventional electronic modes, and the electromagnet 50 is controlled to be electrified to realize unlocking. The emergency key unlocking structure can be reserved according to the requirement.

Claims

1. A safety lock body structure with two-stage protection comprises a lock shell (1), a main bolt (2) arranged in the lock shell (1), and a main bolt support (21) connected with the main bolt (2) and arranged in the lock shell (1); the method is characterized in that: a main bolt reset spring (22) for driving the main bolt to retract into the lock shell (1) is arranged between the main bolt support (21) and the lock shell (1);

a locking support (4) is further arranged in the lock shell (1), a locking block (41) is arranged on the locking support (4), and a locking support reset spring (42) which elastically pushes the locking support (4) is further arranged between the locking support (4) and the lock shell (1) to enable the locking block (41) on the locking support to elastically abut against the side wall of the main bolt support (21); a locking clamping groove (23) is formed in the side wall of the main bolt support (21), and when the main bolt (2) is in an extending state, the locking clamping groove (23) is matched and clamped with a locking block (41) on the locking support (4); the locking bracket (4) is also connected with an electromagnetic driving mechanism (5) for driving the locking bracket (4) to separate the locking block (41) from the locking clamping groove (23);

the lock is characterized in that a main bolt driving bracket (21) is arranged in the lock shell (1) and drives the main bolt bracket (21) to push the main bolt (2) out of a main bolt driving mechanism of the lock shell (1).

2. A two-stage protective security lock body structure as claimed in claim 1, wherein: the lock also comprises a movable bolt (3) arranged in the lock shell (1), a movable bolt support (31) connected with the movable bolt (3) is also arranged in the lock shell (1), and a movable bolt reset spring (32) for elastically driving the movable bolt (3) to extend and reset is arranged between the movable bolt support (31) and the lock shell (1); an inner side wall plate of the lock shell (1) is provided with an inner door handle connecting shaft (61), and an outer side wall plate of the lock shell (1) is provided with an outer door handle connecting shaft (81);

the main bolt driving mechanism comprises: the unlocking pin shaft (43) is arranged in the lock shell (1), is fixedly connected with the door inner handle connecting shaft (61) and is used for forwardly stirring the arc-shaped inner stirring sheet (6) extending out of the main lock tongue (2), and is arranged on the locking support (4) and is pushed to push the locking support (4) to push the locking block (41) to be separated from the locking clamping groove (23) to be pushed in the direction due to reverse stirring of the arc-shaped inner stirring sheet (6); a movable bolt poking rod (62) is also arranged on the arc-shaped inner poking piece (6), and a movable bolt unlocking driving mechanism (7) for driving the movable bolt support (31) to retreat in the reverse poking process of the arc-shaped inner poking piece (6) is also arranged between the movable bolt poking rod (62) and the movable bolt support (31);

and an arc-shaped outer poking sheet (8) which is arranged in the lock shell (1) and is fixedly connected with the door outer handle connecting shaft (81) and used for poking the main bolt (2) to extend forwards;

the outer side wall plate of the lock shell (1) is provided with a lock core connecting shaft (34), and a lock core unlocking pin shaft (35) for shifting the movable bolt support (31) to retreat is arranged on the non-axial center position on the end surface of the lock core connecting shaft (34).

3. A two-stage protective safety lock body structure according to claim 2, wherein: the lock shell (1) inside wall board on be equipped with anti-lock connecting axle (371), be equipped with movable spring bolt in lock shell (1) and block piece (37), be equipped with one piece on the non-axle center position on the terminal surface of anti-lock connecting axle (371) and be used for stirring movable spring bolt and block piece (37) translation to block anti-lock round pin axle (372) that movable spring bolt support (31) retreated the position.

4. A two-stage protective safety lock body structure according to claim 2, wherein: an emergency unlocking shifting sheet (942) is also inserted into the lock shell (1), and the emergency unlocking shifting sheet (942) is in poking connection with the side edge of the locking support (4) in a matching manner; the lock core connecting shaft (34) is also connected with an emergency plectrum stopping piece (38) for stopping the emergency unlocking plectrum (942) from rotating to stir the locking bracket (4).

5. A two-stage protective safety lock body structure according to claim 1 or 2, wherein: the lock-up support (4) is provided with a longitudinal guide limiting groove (45), and the longitudinal guide limiting groove (45) is in supporting connection with the lock shell (1) through a limiting column (451); the movement direction of the locking bracket (4) is vertical to the movement direction of the main bolt (2); one end of the locking support (4) is connected with the lock shell (1) through the locking support reset spring (42), and the other end is hinged with an electromagnetic driving mechanism (5) through a linkage push rod (51).

6. A two-stage protective security lock body structure as claimed in claim 5, wherein: the electromagnetic driving mechanism (5) comprises an electromagnet (50), an iron core of the electromagnet (50) is connected with an electromagnet pull rod (52), a pull rod limiting groove (521) axially arranged with the electromagnet is formed in the electromagnet pull rod (52), and a pull rod limiting pin (522) in supporting connection with the lock shell (1) is arranged in the pull rod limiting groove (521); the linkage push rod (51) is hinged with the electromagnet pull rod (52).

7. A two-stage protective safety lock body structure according to claim 2, wherein: the movable lock bolt unlocking driving mechanism (7) between the movable lock bolt poking rod (62) and the movable lock bolt support (31) is a lever driving mechanism and comprises a lever (71), the middle part of the lever (71) is connected with the lock shell (1) in a supporting mode through a lever shaft (72), one end of the lever (71) is arranged in the rotating and poking range of the movable lock bolt poking rod (62), one end of the lever (71) is arranged on an unlocking pushing piece (33) on the movable lock bolt support (31), and one end, arranged on the movable lock bolt support (31), of the lever (71) is located on one side, close to the movable lock bolt (3), of the unlocking pushing piece (33).

8. A two-stage protective safety lock body structure according to claim 3, wherein: the movable bolt blocking piece (37) is longitudinally connected with the inner wall of the lock shell (1) in a sliding mode, the movable bolt blocking piece (37) comprises a blocking piece (373) matched with the movable bolt support (31), a strip-shaped groove (374) with the width matched with the size of the counter lock pin shaft (372) is horizontally formed in the movable bolt blocking piece (37), and the counter lock pin shaft (372) is arranged in the strip-shaped groove (374).

9. A two-stage protective safety lock body structure according to claim 2, wherein: the electromagnetic driving mechanism (5) is electrically connected with a fingerprint verification module, a password verification module, a face recognition module, an intelligent card recognition module or a remote network communication module.

10. A two-stage protective security lock body structure as claimed in claim 1, wherein: the main bolt driving mechanism comprises: at least two groups of electromagnetic driving mechanisms fixedly arranged with the lock shell (1) are connected with the main bolt bracket (21) by adopting a same-direction step-by-step transmission driving structure.