CN111395882A - A safety lock body structure with two levels of protection - Google Patents

Abstract

A safety lock body structure with two-level protection relates to the technical field of safety door locks. To solve the technical deficiencies of the existing door locks such as poor safety, high cost, inconvenient operation, etc., the solution adopted is: a locking bracket is also arranged in the lock shell, a locking block is arranged on the locking bracket, and the locking bracket is connected to the lock. There is also a locking bracket return spring between the shells; a locking slot is arranged on the side wall of the main latch bracket, and the locking bracket is also connected with a driving locking bracket, so that the locking block can be removed from the locking slot. Disengaged electromagnetic drive mechanism; when the handle on the inner side of the door is reversed, the main bolt bracket is pushed through the arc-shaped inner paddle, so that the main bolt extends out. Easy to lock. The inside and outside of the door can be easily locked, and the outside door can be unlocked through intelligent verification and key combination, with high security.

Description

A safety lock body structure with two levels of protection

technical field

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

Background technique

The traditional door lock is mainly unlocked by a simple key, which has poor anti-theft effect, the key is easy to be copied, and the key lock cylinder is easy to be illegally opened; while other simple password-controlled smart door locks, the password is easy to be obtained by peeping, and the security is poor; for existing door locks The above-mentioned technologies are insufficient. Although there are door locks on the market that can only be opened after the key and intelligent verification are double-checked, they have complex structures, high costs, and complicated and inconvenient operations for locking and opening doors.

SUMMARY OF THE INVENTION

To sum up, the main purpose of the present invention is to solve the technical deficiencies of the existing door lock, such as poor safety, high cost, and inconvenient operation, and propose a safety lock body structure with two-level protection.

In order to solve the technical problem proposed by the present invention, the technical scheme adopted is:

A safety lock body structure with two-level protection, comprising a lock shell, a main lock tongue arranged in the lock shell, and a main lock tongue bracket connected with the main lock tongue in the lock shell; characterized in that: the Between the main lock bolt bracket and the lock shell, there is also a main lock bolt return spring that drives the main lock bolt to retract into the lock casing;

There is also a locking bracket in the lock shell, a locking block is arranged on the locking bracket, and an elastically pushing locking bracket is also arranged between the locking bracket and the lock shell, so that the locking block on the locking bracket is kept in elastic contact with the main body. The locking bracket reset spring on the side wall of the lock tongue bracket; the side wall of the main lock tongue bracket is provided with a locking card slot, when the main lock tongue is in the extended state, the locking card slot and the lock on the locking bracket The locking block is matched with the clamping connection; the locking bracket is also connected with an electromagnetic driving mechanism for driving the locking bracket to separate the locking block from the locking slot;

The lock case is provided with a main lock bolt drive mechanism for driving the main lock bolt bracket, so that the main lock bolt bracket pushes the main lock bolt out of the lock case.

As the technical scheme further limiting the present invention includes:

It also includes a movable lock tongue arranged in the lock shell, and a movable lock tongue bracket connected with the movable lock tongue is also arranged in the lock shell. a movable lock tongue return spring; the inner side wall of the lock shell is provided with a door handle connection shaft, and the lock shell outer side wall plate is provided with a door outer handle connection shaft;

The main lock bolt driving mechanism includes: an arc-shaped inner dial which is arranged in the lock shell and is fixedly connected with the connecting shaft of the door inner handle and is used for positively dialing the main lock bolt. The unlocking pin shaft that pushes the locking bracket to the direction that the locking block is separated from the locking slot is pushed in the reverse direction by the arc-shaped inner paddle; Between the moving rod and the movable lock bolt bracket, there is also a movable lock bolt unlocking drive mechanism that drives the movable lock bolt bracket to retreat during the reverse dialing process of the arc-shaped inner paddle;

And, it is arranged in the lock shell, and is fixedly connected with the connecting shaft of the door outside handle, and is used to positively toggle the arc-shaped outer dial that extends out of the main lock tongue;

A lock cylinder connecting shaft is arranged on the outer side wall of the lock shell, and a lock cylinder unlocking pin shaft is arranged on the non-axial position on the end face of the lock cylinder connecting shaft for turning the movable lock bolt bracket back.

The inner side wall of the lock shell is provided with an anti-lock connecting shaft, a movable lock tongue blocking member is arranged in the lock shell, and a non-axial position on the end face of the anti-lock connecting shaft is provided with a block for turning the movable lock tongue to block. The piece is translated to the anti-lock pin shaft that blocks the back position of the movable deadbolt bracket.

An emergency unlocking paddle is also inserted into the lock shell, and the emergency unlocking paddle is connected with the side of the locking bracket by a toggle; the lock cylinder connecting shaft is also connected with a toggle lock for preventing the emergency unlocking paddle from rotating. the emergency paddle stopper of the stop bracket.

The main lock bolt bracket is provided with two or more main lock bolts side by side, the main lock bolt bracket is provided with two or more parallel horizontal guide grooves, and each horizontal guide groove is provided with a set of roller mechanisms, and the roller mechanisms pass through. The roller shaft is supported and connected with the lock housing.

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

The electromagnetic drive mechanism includes an electromagnet, the iron core of the electromagnet is connected with an electromagnet pull rod, the electromagnet pull rod is provided with a pull rod limit groove axially arranged with the electromagnet, and a lock rod is arranged in the pull rod limit groove. The casing supports the connecting rod limit pin; the linkage push rod is hinged with the electromagnet pull rod.

The movable lock tongue unlocking drive mechanism between the movable lock tongue toggle lever and the movable lock tongue bracket is a lever drive mechanism, including a lever, the middle part of the lever is supported and connected with the lock shell through a lever shaft, and one end of the lever is placed in the movable lock. Within the range of rotation and toggle of the tongue toggle lever, one end is placed on an unlocking pusher on the movable deadbolt bracket, and the end of the lever is located on the side of the unlocking pusher near the movable deadbolt.

The movable lock tongue blocking piece is longitudinally slidably connected with the inner wall of the lock shell. The movable lock tongue blocking piece includes a blocking piece that cooperates with the movable lock tongue support. The movable lock tongue blocking piece is also horizontally provided with a width and an anti-lock pin A bar-shaped groove that matches the shaft size, and the anti-locking pin shaft is placed in the bar-shaped groove.

The arc-shaped inner paddle and the arc-shaped outer paddle are respectively arranged on the inner side and outer side of the main lock bolt bracket, and the arc-shaped inner paddle and the arc-shaped inner paddle are respectively arranged on the inner side and outer side of the main bolt bracket. The side of the arc-shaped outer pick is matched with the inner pulley and the outer pulley that the roller contacts.

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

The main lock bolt driving mechanism includes: at least two sets of electromagnetic driving mechanisms fixedly installed with the lock case, and each group of electromagnetic driving mechanisms is connected to the main lock bolt support by adopting a same-direction step-by-step transmission drive structure.

The beneficial effects of the present invention are: the door lock of the present invention can conveniently realize locking and unlocking, the handle on the inner side of the door pushes the locking bracket to translate through forward rotation, thereby releasing the main bolt bracket, and the main bolt bracket is reset on the main bolt Under the action of the spring, the main deadbolt is driven to retract into the lock housing, and at the same time, during the forward rotation of the handle on the inside of the door, the movable deadbolt bracket is driven by the movable deadbolt unlocking drive mechanism to compress the movable deadbolt reset spring to retreat, so as to achieve the indoor unlocking of the present invention. Effect: When the handle on the inner side of the door is reversed, the main bolt bracket is pushed through the arc-shaped inner paddle, so that the main bolt extends. After the extension is in place, the main bolt bracket is locked by the locking bracket, and the door is easily locked. The locking principle of the handle on the outside of the door is similar to the locking principle of the handle on the inside of the door. When the invention needs to be unlocked outside the door, after the identity verification of the intelligent module is passed, the electromagnetic drive mechanism is energized, and the locking bracket is pushed under the action of the electromagnetic drive mechanism. Translate to release the main lock bolt bracket, which drives the main lock bolt to retract into the lock shell under the action of the main lock bolt return spring; To achieve the outdoor unlocking effect of the present invention, it is necessary to drive the movable lock bolt bracket to compress the movable lock bolt reset spring to retreat first. The inside and outside of the door can be easily locked, and the outside of the door can be unlocked through the combination of intelligent verification and key, with high security.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram in the application process of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of another angle in the application process of the present invention;

Fig. 3 is the exploded structure schematic diagram of Fig. 1;

Fig. 4 is the exploded structure schematic diagram of Fig. 2;

5 is a schematic three-dimensional structure diagram of the lock case of the present invention in an open state;

Fig. 6 is the structural representation when the present invention does not contain the lock shell;

Fig. 7 is another angle structure schematic diagram when the present invention does not contain the lock shell;

Fig. 8 is the exploded structure schematic diagram of Fig. 6;

Fig. 9 is the exploded structure schematic diagram of Fig. 7;

10 is a schematic three-dimensional structure diagram of another embodiment of the present invention;

Figure 11 is a schematic diagram of the internal structure of the scheme of Figure 10;

FIG. 12 is a schematic diagram of the state of the main bolt drive mechanism structure of the scheme of FIG. 10 before electrification;

Fig. 13 is a state schematic diagram of the main bolt drive mechanism structure of the scheme of Fig. 10 during the power-on locking process;

FIG. 14 is a schematic view of the state of the main latch driving mechanism structure of the solution of FIG. 10 after locking.

Detailed ways

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

Referring to Figures 1 to 9, a two-level protection safety lock body structure disclosed in the present invention includes a lock housing 1, a main lock tongue 2 and a movable lock tongue 3 arranged in the lock housing 1, and the lock housing 1 is also provided with a main bolt bracket 21 and a movable bolt bracket 31 respectively connected with the main bolt 2 and the movable bolt 3, and a driving main lock is also provided between the main bolt bracket 21 and the lock shell 1. The tongue 2 retracts the main lock tongue return spring 22 in the lock shell 1; between the movable lock tongue bracket 31 and the lock shell 1, there is a movable lock tongue return spring 32 which elastically drives the movable lock tongue 3 to extend and reset; The shapes of the deadbolt 2 and the movable deadbolt 3 can be the same as the existing door locks, that is, the main deadbolt 2 is a cylindrical or cuboid structure, and the movable deadbolt 3 is a chamfered surface structure. In order to improve the firmness of the product, the main lock bolt bracket 21 is provided with more than two main lock bolts 2 side by side. In the accompanying drawings, two cylinders and a rectangular parallelepiped structure are used as examples to illustrate, and the three main lock bolts 2 extend synchronously and horizontally. The lock case 1 is pulled out or the lock case 1 is retracted; in order to ensure that the three main lock bolts 2 can be pushed out or retracted horizontally, the main lock bolt bracket 21 is provided with two or more horizontal guide grooves 211 arranged in parallel. The horizontal movement of the bracket 21 is smooth and smooth. Each horizontal guide groove 211 is provided with a set of roller mechanisms 212. The roller mechanism 212 is supported and connected to the lock shell 1 through the roller shaft. In the specific application process of the roller mechanism 212, the outer diameter and the horizontal The guide groove 211 has the same width as the bearing.

Compared with the existing door lock, the most important feature of the present invention is that the lock shell 1 is also provided with a locking bracket 4. The locking bracket 4 is mainly used to lock the lock in time after the main bolt 2 extends out of the lock shell 1 in place. The main lock bolt bracket 21 is blocked to keep the main lock bolt 2 in the extended state. The specific structure is as follows: the locking bracket 4 is provided with a locking block 41, and between the locking bracket 4 and the lock shell 1 is also provided with an elastically pushing locking bracket 4, so that the locking block 41 on the locking bracket 41 is kept in elastic contact with The locking bracket reset spring 42 on the side wall of the main bolt bracket 21; the side wall of the main bolt bracket 21 is provided with a locking slot 23, when the main bolt 2 is in the extended state, the locking slot 23 is in contact with all the locking slots 23. The locking block 41 on the locking bracket 4 cooperates with the snap connection; that is, the locking block 41 always maintains elastic abutment with the main bolt bracket 21 under the action of the locking bracket return spring 42, and is in the main bolt bracket. 21 During the process of pushing the main bolt 2 out, the locking block 41 is in elastic contact with the main bolt bracket 21, and when the main bolt 2 extends out of the lock shell 1 to a preset length, the locking slot 23 is just in contact with the lock. Corresponding to the locking block 41 on the locking bracket 4, the locking block 41 falls into the locking slot 23 under the action of the locking bracket return spring 42, the main bolt bracket 21 is stuck, and the main bolt 2 cannot be Return to lock housing 1.

The locking bracket 4 is also connected with an electromagnetic drive mechanism 5 that drives the locking bracket 4 to disengage the locking block 41 from the locking slot 23; When inside, the electromagnetic drive mechanism 5 is energized, pushes the locking bracket 4 to compress the locking bracket return spring 42, the locking block 41 is disengaged from the locking slot 23, the main bolt bracket 21 is released, and the main bolt return spring 22 Under the action of the pulling force, the main bolt bracket 21 and the main bolt 2 translate horizontally, and the main bolt 2 retracts into the lock shell 1 to achieve the purpose of unlocking the main bolt 2 .

A further preferred solution is: the locking bracket 4 is provided with a longitudinal guide limiting groove 45, and is supported and connected to the lock shell 1 through a limiting column 451 in the longitudinal guiding limiting groove 45; The movement direction of the lock tongue 2 is perpendicular to the setting; one end of the locking bracket 4 is connected with the lock shell 1 through the locking bracket return spring 42. The specific structure can be that the locking bracket return spring 42 is sleeved on the locking bracket 4, and the lock The shell 1 is punched and folded to form a limit connecting piece 11, the locking bracket 4 is inserted into the limit hole on the limit connecting piece 11, and the locking bracket return spring 42 abuts on the limit connecting piece 11; the locking bracket The other end of 4 is hinged with an electromagnetic drive mechanism 5 through a linkage push rod 51 . The electromagnetic drive mechanism 5 includes an electromagnet 50, and the iron core of the electromagnet 50 is connected with an electromagnet pull rod 52. The electromagnet pull rod 52 is provided with a pull rod limit slot 521 axially arranged with the electromagnet. The slot 521 is provided with a pull rod limit pin 522 that is supported and connected to the lock shell 1; the linkage push rod 51 is hinged with the electromagnet pull rod 52; when the electromagnet 50 is energized, the electromagnet pull rod 52 retreats horizontally, Since the linkage push rod 51 is of a rigid structure, the linkage push rod 51 will push the locking bracket 4 to move upward, so that the locking block 41 is disengaged from the locking slot 23 , and the main bolt 2 is retracted into the lock housing 1 .

The lock case 1 is provided with a main lock bolt drive mechanism that drives the main lock bolt bracket 21 to translate so that the main lock bolt bracket 21 pushes the main lock bolt 2 out of the lock case 1 . In the specific implementation process, the specific way for the main deadbolt 2 to push out the lock shell 1 can be adopted: 1. Push out from the inner side of the door through the door inner handle 95; 2. Push out from the door outer side through the door outer handle 96; 3. Pushed out by electromagnetic drive mechanism.

In order to control the main bolt 2 from the inner side of the door to protrude from the lock shell to realize the locking of the present invention, the inner side wall plate of the lock shell 1 is provided with a door inner handle connecting shaft 61. During the application process, the door inner handle is connected to The shaft 61 is connected to the inner door handle 95 through a square shaft; the main bolt drive mechanism specifically includes a drive mechanism provided in the lock shell 1 and fixedly connected to the door inner handle connecting shaft 61 for positively dialing the main bolt to extend The arc-shaped inner paddle 6 is rotated synchronously by the connecting shaft 61 of the door inner handle, and the main latch bracket 21 is pushed through the arc-shaped inner paddle 6, so that the main latch 2 is stretched out. , the main deadbolt bracket 21 is locked by the locking bracket 4, that is, the door handle 95 in the horizontal state is lifted up, the main deadbolt 2 is extended to lock, and the door is locked conveniently.

In order to unlock and open the door of the present invention from the inner side of the door, the locking bracket 4 is provided with an arc-shaped inner paddle 6 reversely dialed to push the locking bracket 4 to the direction of the locking block 41 leaving the locking slot 23. The unlocking pin 43; that is, when the inner door handle connecting shaft 61 drives the arc-shaped inner paddle 6 to rotate in the reverse direction, the arc-shaped inner paddle 6 drives the locking bracket 4 through the unlocking pin 43 to compress the locking bracket return spring 42, The locking block 41 is disengaged from the locking slot 23, and the main deadbolt bracket 21 is released; at this time, due to the existence of the movable deadbolt 3, the door cannot be opened directly. Therefore, the arc-shaped inner paddle 6 is also provided with The movable lock tongue toggle lever 62 is also provided with a movable lock tongue unlocking drive mechanism 7 between the movable lock tongue toggle lever 62 and the movable lock tongue bracket 31; the function of the movable lock tongue unlocking drive mechanism 7 is to realize the arc-shaped inner dial When the plate 6 controls the locking bracket 4 to release the main locking bolt bracket 21, the movable locking bolt toggle lever 62 can synchronously control the movable locking bolt bracket 31 to retreat, the movable locking bolt return spring 32 is compressed, and the movable locking bolt 3 retracts the lock shell. 1, the door can be opened, that is, when the horizontal inner door handle 95 is pressed down, both the main deadbolt 2 and the movable deadbolt 3 are retracted into the lock shell 1, and the door can be easily unlocked and opened.

The specific structure of the movable lock tongue unlocking drive mechanism 7 can be a lever drive mechanism, including a lever 71, the middle of the lever 71 is supported and connected to the lock shell 1 through a lever shaft 72, and one end of the lever 71 is placed on the movable lock tongue toggle lever 62 to rotate and toggle. Within the range, one end is placed on an unlocking pusher 33 on the movable deadbolt bracket 31 , and the end of the lever 71 is located on the side of the unlocking pusher 33 close to the movable deadbolt 3 . In the specific implementation process, a pulling rope structure can also be used to replace the lever driving mechanism.

In order to lock the present invention on the outer side of the door, the outer side wall plate of the lock shell 1 is provided with an outer door handle connecting shaft 81, and the outer door handle connecting shaft 81 is connected to the outer door handle 96 through a square shaft; the main lock The tongue drive mechanism is also provided in the lock shell 1 with an arc-shaped outer dial 8 that is fixedly connected to the connecting shaft 81 of the outer door handle and is used to positively dial the main lock tongue 2 to extend; realize the locking principle and the arc-shaped inner dial The principle of locking the plate 6 is similar. The main bolt bracket 21 is moved by the arc-shaped outer plate 8, so that the main bolt 2 can be extended. Similarly, after the main bolt 2 is extended in place, the main bolt bracket 21 is locked. The stop bracket 4 is locked. That is to say, the outside door handle 96 in the horizontal state is lifted upwards, and the main lock tongue 2 is extended for locking, which is convenient for locking the outside of the door.

Described arc-shaped inner pick 6 and arc-shaped outer pick 8 are preferably located on the inner side and outer side of the main latch bracket 21 respectively; in order to reduce the arc-shaped inner pick 6 and the arc-shaped outer pick 8 The friction with the main deadbolt bracket 21 makes the door lock inside or outside the door smoothly and easily. The side of the outer paddle 8 is matched with the inner pulley 24 and the outer pulley 25 which are in contact with the rollers.

In order to unlock the present invention on the outside of the door, a lock cylinder connecting shaft 34 is provided on the outer side wall of the lock shell 1, and a non-axial position on the end face of the lock cylinder connecting shaft 34 is provided with a bracket 31 for turning the movable deadbolt. The backward lock cylinder unlocks the pin shaft 35 . The specific structure can be that a U-shaped groove 36 is formed on the movable lock bolt bracket 31, the lock cylinder unlocking pin 35 is placed in the U-shaped groove 36, and the user inserts the key into the lock cylinder 91 outside the door during the rotation process, the lock cylinder is rotated. The connecting shaft 34 rotates synchronously, the lock cylinder unlocking pin 35 toggles the movable lock bolt bracket 31 in the U-shaped groove 36 to compress the movable lock bolt return spring 32, and the movable lock bolt 3 retracts into the lock shell 1; After the fingerprint identification module 92 on the panel passes the identity verification, the electromagnetic drive mechanism 5 is powered on, pushing the locking bracket 4 to compress the locking bracket return spring 42, the locking block 41 is disengaged from the locking slot 23, and the main latch bracket 21 After being released, under the pulling force of the main deadbolt return spring 22, the main deadbolt bracket 21 and the main deadbolt 2 translate horizontally, and the main deadbolt 2 retracts into the lock shell 1 to achieve the effect of unlocking and opening the door outside the door.

In the specific implementation process, in addition to the fingerprint identification module 92 for identity verification, a password verification module, a face identification module, a smart card identification module or a remote network communication module can also be used for identity verification. The face recognition module mainly collects the facial information of the unlocking operator through the camera, and controls the electromagnetic drive mechanism 5 to energize when it is consistent with the system preset. The authentication of the remote network communication module is mainly connected with the cloud server through the network communication module, and the unlocking instruction is sent through the dedicated application program on the corresponding smartphone to unlock.

When there are people in the room, in order to prevent the present invention from being unlocked, the door is opened, and the personal safety is improved, an anti-lock connecting shaft 371 is provided on the inner side wall of the lock case 1, and a movable latch block is provided in the lock case 1 37. An anti-lock pin shaft 372 is provided on the non-axial position on the end surface of the anti-lock connecting shaft 371 for turning the movable latch block 37 to translate to block the retreat position of the movable latch bracket 31 . When the anti-lock handle 93 in the door is rotated 90 degrees, the anti-lock connecting shaft 371 is also rotated 90 degrees synchronously, and the anti-lock pin shaft 372 on the anti-lock connecting shaft 371 will move the movable latch block 37 upward to block the movable latch The bracket 31 retreats, and even if a key is inserted outside the door, the movable latch bracket 31 cannot be moved to retreat, and the door cannot be unlocked outside the door, thereby improving personal safety inside the door.

The specific structure of the movable deadbolt blocking member 37 is as follows: the movable deadbolt blocking member 37 is longitudinally slidingly connected with the inner wall of the lock shell 1 , and the movable deadbolt blocking member 37 includes a blocking piece 373 that cooperates with the movable deadbolt bracket 31 . , the movable lock tongue blocking member 37 is also horizontally provided with a strip-shaped groove 374 whose width is consistent with the size of the anti-lock pin shaft 372. Pan up and down.

In order to avoid the failure of the circuit part of the present invention, causing the electromagnetic drive mechanism 5 to fail to energize and work, the present invention is also equipped with an emergency key lock cylinder 94. Under normal conditions, the emergency key lock cylinder 94 is closed by the protective cover 941 on the outer panel of the door. An emergency unlocking paddle 942 connected with the emergency key lock cylinder 94 is also inserted into the lock shell 1 of the lock case 1, and the emergency unlocking paddle 942 is connected with the side of the push rod 44 on the locking bracket 2 in a toggle connection; The cover 941 is inserted into the emergency key, the emergency key lock cylinder 94 is moved upward by the emergency unlocking paddle 942 and the push rod 44 is moved upward, and the locking bracket 4 releases the main bolt bracket 21 . In order to prevent the emergency key lock cylinder 94 from being abused illegally, the emergency paddle stopper 38 for preventing the emergency unlocking paddle 942 from rotating and turning the locking bracket 4 is also connected to the said 34; Under the joint action of the key, the function of the electromagnetic drive mechanism 5 is skipped, and the emergency door is opened outside the door.

Referring to another embodiment shown in FIGS. 10 to 14 , the difference between this embodiment and the embodiment shown in FIGS. 1 to 9 is mainly that the driving mode of the main latch driving mechanism is different, and a relatively simple driving mode is adopted, and That is, the main bolt bracket 21 is driven to translate by the electromagnetic drive mechanism, so that the main bolt bracket 21 pushes the main bolt 2 out of the lock shell 1 . Specifically, it includes at least two sets of electromagnetic drive mechanisms fixedly installed with the lock shell 1 , and each group of electromagnetic drive mechanisms is connected to the main lock bolt bracket 21 by adopting a same-direction step-by-step transmission drive structure. Preferably, two sets of electromagnetic drive mechanisms are connected to the main latch bracket 21 using a two-stage transmission drive structure in the same direction; the two sets of electromagnetic drive mechanisms may be two frame-type electromagnets.

Due to the limitation of the thickness of the door panel, the size of the electromagnet that the lock case 1 can accommodate is limited, and the stroke of a single electromagnet is also limited, so that the main bolt 2 cannot be pushed out of the lock case 1 to achieve a stable locking state. Therefore, this implementation In the example, two frame-type electromagnets are used. When one frame-type electromagnet is energized and locked, it first moves the main latch bracket 21 by pushing, and then the other frame-type electromagnet moves the main lock by pulling. Tongue holder 21 .

Working process, as shown in Figures 11 and 12, the two frame-type electromagnets that constitute the main bolt drive mechanism are the first frame-type electromagnet 101 and the second frame-type electromagnet 102, respectively, the first frame-type electromagnet Compared with the traditional frame type electromagnet 101 and the second frame type electromagnet 102, the improvement point is that the distance between the frames 1010 is lengthened, and the length of the sliding rod 1011 is lengthened; A magnetic thrust is applied to the moving iron core on the sliding rod 1011, and the sliding rod 1011 pushes and moves the main latch bracket 21 and the sliding rod of the first frame type electromagnet 101 to translate. After the stroke of the second frame type electromagnet 102 reaches the maximum state , enter the state shown in FIG. 13 , the moving 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; after that, the second frame type electromagnet 102 fails. , Under the action of the first frame type electromagnet 101, the main bolt bracket 21 is pulled and moved to continue to translate until the main bolt bracket 21 pushes the main bolt 2 out of the lock shell 1 until the main bolt bracket 21 is locked by the bracket 4 Locked to reach the state shown in Figure 14. The unlocking process is the same as that of the embodiment shown in FIGS. 1 to 9 . After the locking bracket 4 releases the main bolt bracket 21 , the main bolt return spring 22 drives the main bolt bracket 21 to reset.

In this embodiment, the relevant structures of the movable latch ( 3 ), the inner door handle 95 and the outer door handle 96 in the embodiments shown in FIGS. 1 to 9 can be retained or cancelled as required. In the case of canceling the relevant structures of the movable latch (3), the inner door handle 95 and the outer door handle 96, the first frame type electromagnet 101 and the second frame type electromagnet 102 are controlled after authentication through various existing electronic methods. Power on to achieve locking, and control the electromagnet 50 to power on to achieve unlocking. The aforementioned emergency key unlocking structure can be retained as required.

Claims (10)

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 (40) 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 bolt unlocking driving mechanism (7) between the movable bolt poking rod (62) and the movable 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 bolt poking rod (62), one end of the lever (71) is arranged on an unlocking pushing piece (33) on the movable bolt support (31), and the end of the lever (71) is located on one side, close to the movable 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.

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