CN112081467A

CN112081467A - Automatic lock

Info

Publication number: CN112081467A
Application number: CN202011019396.6A
Authority: CN
Inventors: 侯洪兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-12
Filing date: 2020-09-12
Publication date: 2020-12-15

Abstract

The invention relates to an automatic lock, relating to the technical field of locks.A plate body of a main lock tongue frame is movably arranged at the lower position of the inner ends of two top and bottom hooks up and down, and first guide posts are symmetrically fixed on the plate body of the main lock tongue frame left and right and are movably arranged in triangular grooves formed at the inner ends of the top and bottom hooks; a first sliding groove, a second sliding groove and a third sliding groove are formed in a plate body of the main lock tongue frame, wherein the third sliding groove is transversely arranged on the left side of the second sliding groove, the second sliding groove is arranged on the left side of the first sliding groove, and the first sliding groove and the second sliding groove are both vertically arranged; the inner end of the resistance rod penetrates through the bottom wall of the lock shell and is movably arranged in the first sliding groove in a penetrating mode; a third guide post is movably arranged in the second sliding groove. The door can be closed, the main bolt frame can be ejected together, and double locking can be realized without key operation; when the door is opened, the main bolt frame and the latch bolt assembly can be opened simultaneously, and the main bolt frame is locked conveniently and quickly.

Description

Automatic lock

Technical Field

The invention relates to the technical field of locks, in particular to an automatic lock.

Background

The existing lock is locked only by a bolt after a door is closed, and when double locking is required to be carried out by using a main bolt frame, the existing lock is also operated by a key, so that the existing lock is inconvenient to carry out.

Disclosure of Invention

The invention aims to provide an automatic lock with reasonable design aiming at the defects and shortcomings of the prior art, which can simultaneously eject a main bolt frame when a door is closed, and can realize double locking without key operation; when the door is opened, the main bolt frame and the latch bolt assembly can be opened simultaneously, and the main bolt frame is locked conveniently and quickly.

In order to achieve the purpose, the invention adopts the following technical scheme: the anti-theft lock comprises a lock shell, an oblique tongue component, a top and bottom hook, a main lock tongue frame, a starting hook, a locking plate, a main plate starting sheet, a lock cylinder starting sheet, a resistance rod, an anti-theft handle lock body connector, a key lock hole, a lock cylinder torsion spring, a locking plate torsion spring, a spring and a top and bottom hook torsion spring; the two top and bottom hooks are bilaterally and movably inserted in the lock shell, a rotating shaft at the bottom of the inner wall of the lock shell is sleeved with a top and bottom hook torsion spring, one end of the top and bottom hook torsion spring is fixed on the bottom wall of the top and bottom hook, the other end of the top and bottom hook torsion spring abuts against the inner wall of the bottom of the lock shell, a plate body of the main spring bolt frame is vertically and movably arranged below the inner ends of the two top and bottom hooks, first guide posts are bilaterally and symmetrically fixed on the plate body of the main spring bolt frame, and the first guide posts are movably arranged in triangular grooves formed in the inner ends of the; a first sliding groove, a second sliding groove and a third sliding groove are formed in a plate body of the main lock tongue frame, wherein the third sliding groove is transversely arranged on the left side of the second sliding groove, the second sliding groove is arranged on the left side of the first sliding groove, and the first sliding groove and the second sliding groove are both vertically arranged; the inner end of the resistance rod penetrates through the bottom wall of the lock shell and is movably arranged in the first sliding groove in a penetrating mode; a third guide post is movably arranged in the second sliding groove, the bottom end of the third guide post is fixed on the inner wall of the lock shell, a second guide post is movably arranged in the third sliding groove, the second guide post is fixed on a mainboard starting sheet, a lock cylinder starting sheet is arranged above the mainboard starting sheet, the mainboard starting sheet is arranged below the plate body of the main lock tongue frame, the lock cylinder starting sheet is arranged above the plate body of the main lock tongue frame, the end parts of the mainboard starting sheet and the lock cylinder starting sheet are connected in the lock shell in a rotating mode through the same rotating shaft, a lock cylinder torsional spring is sleeved on the rotating shaft, one end of the lock cylinder torsional spring is fixed on the inner wall of the lock shell, the other end of the lock cylinder torsional spring is fixed on the mainboard starting sheet, and a buckle of the lock; the key lock hole is inserted in the lock shell; the lower end corner of the lock cylinder starting sheet is rotatably connected with a linkage rod by a shaft, the other end of the linkage rod is rotatably connected with an anti-theft handle lock body connector by a shaft, the anti-theft handle lock body connector is inserted into a lock shell, the upper end corner of the anti-theft handle lock body connector is movably contacted with a starting hook, the starting hook is fixed on a rod body of an oblique tongue component, a spring is sleeved on the rod body of the oblique tongue component, the oblique tongue component is movably inserted into the lock shell, and the oblique tongue component is arranged below a ground hook on the right side; the inner end angle of the starting hook is movably contacted with the outer end angle of the locking plate, the locking plate is screwed in the lock shell by utilizing a rotating shaft, a locking plate torsion spring is sleeved on the rotating shaft, one end of the locking plate torsion spring is fixed on the inner wall of the lock shell, the other end of the locking plate torsion spring is fixed on the side wall of the locking plate, and a positioning piece on the lower end of the locking plate is movably clamped with a bayonet arranged on the side wall of the frame body of the main lock tongue frame.

Furthermore, a safety plate is arranged on the left side of the key lock hole and fixed in the lock shell.

The working principle of the invention is as follows: when the door is closed, the door frame of the latch bolt assembly retracts under pressure, the starting hook is driven to retract in the retracting process, the inner end angle of the starting hook is in mutual contact with the outer end angle of the locking plate and drives the locking plate to rotate around a rotating shaft connected with the locking plate, so that the positioning piece on the locking plate is separated from the bayonet of the side wall of the main spring bolt frame plate, the main spring bolt frame is unlocked at the moment, the main plate starting piece rebounds under the action of a lock core torsion spring on the rotating shaft, the second guide post rotates anticlockwise around the rotating shaft on the main plate starting piece, the second guide post is matched with the third sliding groove to drive the main spring bolt frame to move upwards, meanwhile, the natural hook extends outwards under the rebounding action of the natural hook torsion spring, even if the spring bolt of the main spring bolt frame automatically pops, at the moment, the buckle of the lock core starting piece is hooked with the inner end of the key locking hole to be locked, and the first guide post, thereby driving the left and right heaven and earth hooks to extend out, popping and locking the latch bolt assembly under the resilience action of the spring, and in the popping process, the inner end of the resistance rod is matched with the first sliding groove for sliding arrangement to play a role in speed reduction and silencing;

when a key is used for opening the door, the key is inserted into the key lock hole to rotate, so that the lock core starting sheet is driven to rotate clockwise around a rotating shaft on the key, meanwhile, the main board starting sheet rotates clockwise, the second guide post connected to the main board starting sheet slides in the third sliding groove, the main lock tongue frame is driven to descend until the bayonet on the right side of the board body of the main lock tongue frame meets the positioning sheet on the locking plate, the locking plate rotates under the action of a locking plate torsion spring on the rotating shaft, the positioning sheet is clamped with the bayonet, locking of the main lock tongue frame is realized, in the descending process of the main lock tongue frame, the first guide post slides downwards to the lower end of the triangular groove, so that the left and right top-to-bottom hooks are driven to retract, the linkage rod is driven to move to the left side while the lock core starting sheet rotates clockwise, the other end of the linkage rod drives the anti, in the process of rotating the anti-theft handle lock body connector, the upper end angle of the anti-theft handle lock body connector is contacted with the starting hook, and the starting hook is pressed down, so that the latch bolt assembly is driven to retract, and the door is opened;

when the anti-theft handle lock body connector is used for opening a door, the anti-theft handle lock body connector is rotated clockwise, the upper end of the anti-theft handle lock body connector contacts with the starting hook in an angular mode, the starting hook is pressed downwards, so that the latch bolt assembly is driven to retract, meanwhile, the anti-theft handle lock body connector drives the linkage rod to push leftwards, the lock core starting sheet is driven to rotate clockwise around the rotating shaft of the lock core starting sheet, the buckle on the lock core starting sheet is separated from the key lock hole, meanwhile, the main board starting sheet also rotates clockwise, the main lock bolt frame is driven to retract by matching of the second guide column and the third sliding groove, the first guide column slides downwards to the lower end of the triangular groove in the retracting process, and therefore.

After adopting the structure, the invention has the beneficial effects that: the invention provides an automatic lock, which can simultaneously eject a main bolt frame when a door is closed, and can realize double locking without key operation.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a state diagram of the pop-up lock door of the present invention.

FIG. 3 is a schematic structural diagram of the anti-theft pull-handle lock body connector of the present invention.

Fig. 4 is a view showing the door opened by the retraction of the present invention.

Fig. 5 is a schematic view of the backside structure of the present invention.

Description of reference numerals:

the anti-theft lock comprises a lock shell 1, an oblique tongue component 2, a top and bottom hook 3, a triangular groove 3-1, a main lock tongue frame 4, a first guide post 4-1, a first sliding groove 4-2, a second sliding groove 4-3, a third sliding groove 4-4, a bayonet 4-5, a starting hook 5, a locking plate 6, a positioning piece 6-1, a main plate starting piece 7, a second guide post 7-1, a lock cylinder starting piece 8, a resistance rod 9, an anti-theft handle lock body connector 10, a safety plate 11, a third guide post 12, a key locking hole 13, a linkage rod 14, a lock cylinder torsion spring 15, a torsion spring locking plate 16, a spring 17 and a top and bottom hook torsion spring 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

As shown in fig. 1, fig. 3 and fig. 5, the following technical solutions are adopted in the present embodiment: the anti-theft lock comprises a lock shell 1, an oblique bolt component 2, a top and bottom hook 3, a main bolt frame 4, a starting hook 5, a locking plate 6, a main plate starting sheet 7, a lock cylinder starting sheet 8, a resistance rod 9, an anti-theft handle lock body connector 10, a key lock hole 13, a lock cylinder torsion spring 15, a locking plate torsion spring 16, a spring 17 and a top and bottom hook torsion spring 18; the two top and bottom hooks 3 are bilaterally and movably inserted in the lock shell 1, a top and bottom hook torsion spring 18 is sleeved on a rotating shaft at the bottom of the inner wall of the lock shell 1, one end of the top and bottom hook torsion spring 18 is fixed on the bottom wall of the top and bottom hook 3, the other end of the top and bottom hook torsion spring abuts against the inner wall of the bottom of the lock shell 1, a plate body of the main spring bolt frame 4 is vertically and movably arranged at the position below the inner ends of the two top and bottom hooks 3, first guide columns 4-1 are bilaterally and symmetrically fixed on the plate body of the main spring bolt frame 4, and the first guide columns 4-1 are movably arranged in triangular grooves 3-1 formed in the inner ends of; a first sliding groove 4-2, a second sliding groove 4-3 and a third sliding groove 4-4 are arranged in a plate body of the main bolt frame 4, wherein the third sliding groove 4-4 is transversely arranged on the left side of the second sliding groove 4-3, the second sliding groove 4-3 is arranged on the left side of the first sliding groove 4-2, and the first sliding groove 4-2 and the second sliding groove are both vertically arranged; the inner end of the resistance rod 9 penetrates through the bottom wall of the lock shell 1 and then movably penetrates through the first sliding groove 4-2; a third guide post 12 is movably arranged in the second sliding groove 4-3, the bottom end of the third guide post 12 is fixed on the inner wall of the lock shell 1, a second guide post 7-1 is movably arranged in the third sliding groove 4-4, the second guide post 7-1 is fixed on a mainboard starting sheet 7, a lock cylinder starting sheet 8 is arranged above the mainboard starting sheet 7, the mainboard starting sheet 7 is arranged below the plate body of the main lock tongue frame 4, the lock cylinder starting sheet 8 is arranged above the plate body of the main lock tongue frame 4, the end parts of the mainboard starting sheet 7 and the lock cylinder starting sheet 8 are screwed in the lock shell 1 by using the same rotating shaft, a lock cylinder torsion spring 15 is sleeved on the rotating shaft, one end of the lock cylinder torsion spring 15 is fixed on the inner wall of the lock shell 1, the other end is fixed on the mainboard starting sheet 7, and a buckle of the lock cylinder starting sheet 8 is matched and clamped with the key hole 13; the key lock hole 13 is inserted in the lock case 1; the lower end corner of the lock core starting sheet 8 is screwed with a linkage rod 14 by a shaft, the other end of the linkage rod 14 is screwed with an anti-theft handle lock body connector 10 by a shaft, the anti-theft handle lock body connector 10 is inserted in the lock shell 1, the upper end corner of the anti-theft handle lock body connector 10 is movably contacted with a starting hook 5, the starting hook 5 is fixed on a rod body of an oblique tongue component 2, a spring 17 is sleeved on the rod body of the oblique tongue component 2, the oblique tongue component 2 is movably inserted in the lock shell 1, and the oblique tongue component 2 is arranged below a world hook 3 on the right side; the inner end angle of the starting hook 5 is movably contacted with the outer end angle of the locking plate 6, the locking plate 6 is screwed in the lock shell 1 by utilizing a rotating shaft, a locking plate torsion spring 16 is sleeved on the rotating shaft, one end of the locking plate torsion spring 16 is fixed on the inner wall of the lock shell 1, the other end of the locking plate torsion spring 16 is fixed on the side wall of the locking plate 6, and a positioning piece 6-1 on the lower end of the locking plate 6 is movably clamped with a bayonet 4-5 arranged on the side wall of the main lock tongue frame 4; the left side of the key lock hole 13 is provided with a safety plate 11, and the safety plate 11 is fixed in the lock shell 1.

The working principle of the specific embodiment is as follows: when the door is closed, the door frame of the latch bolt assembly 2 retracts under pressure, the starting hook 5 is driven to retract in the retracting process, the inner end angle of the starting hook 5 is in contact with the outer end angle of the locking plate 6 and drives the locking plate 6 to rotate around the rotating shaft connected with the locking plate 6, so that the positioning sheet 6-1 on the locking plate 6 is separated from the bayonet 4-5 on the side wall of the main bolt frame 4, the main bolt frame 4 is unlocked at the moment, the main plate starting sheet 7 rebounds under the action of the lock core torsion spring 15 on the rotating shaft, the second guide post 7-1 rotates anticlockwise around the rotating shaft on the main plate starting sheet 7, the second guide post 7-1 is matched with the third sliding groove 4-4 to drive the main bolt frame 4 to move upwards, and meanwhile, the top and bottom hook 3 extends outwards under the rebounding action of the top and bottom hook torsion spring 18 and moves upwards, the third guide post 12 is matched with the second sliding groove 4-3 to realize guiding, the stability in the moving process is ensured, namely, the lock tongue of the main lock tongue frame 4 is automatically popped out, at the moment, a buckle of the lock cylinder starting sheet 8 is mutually hooked and locked with the inner end of the key lock hole 13, and the first guide post 4-1 is moved upwards to the upper end of the triangular groove 3-1, so that the left and right ground hooks 3 are driven to extend out, the latch bolt assembly 2 is popped out and locked under the rebounding action of the spring 17, and in the popping process, the inner end of the resistance rod 9 is matched with the first sliding groove 4-2 to be arranged in a sliding mode to play a role in speed reduction and silencing;

referring to fig. 2, when a key is used to open the door, the key is inserted into the key lock hole 13 and rotates, so as to drive the lock core starting sheet 8 to rotate clockwise around the rotating shaft thereon, at the same time, the main board starting sheet 7 rotates clockwise, the second guide post 7-1 connected to the main board starting sheet 7 slides in the third sliding slot 4-4, so as to drive the main bolt holder 4 to descend until the bayonet 4-5 on the right side of the board body of the main bolt holder 4 meets the positioning sheet 6-1 on the locking plate 6, at this time, the locking plate 6 rotates under the action of the locking plate torsion spring 16 on the rotating shaft thereof, so as to clamp the positioning sheet 6-1 with the bayonet 4-5, so as to lock the main bolt holder 4, and in the descending process of the main bolt holder 4, the first guide post 4-1 slides down to the lower end of the triangular slot 3-1, so as to drive the left, when the lock core starting sheet 8 rotates clockwise, the linkage rod 14 is driven to move to the left, the other end of the linkage rod 14 drives the anti-theft handle lock body connector 10 to rotate clockwise around a screwed rotating shaft, in the rotating process of the anti-theft handle lock body connector 10, an upper end angle of the anti-theft handle lock body connector contacts with the starting hook 5, and the starting hook 5 is pressed downwards, so that the latch bolt component 2 is driven to retract, and the door is opened;

referring to fig. 4, when the anti-theft handle lock body connector 10 is used for opening a door, the anti-theft handle lock body connector 10 is rotated clockwise, the upper end of the anti-theft handle lock body connector 10 contacts with the start hook 5 in an angular mode, the start hook 5 is pressed downwards, the latch bolt assembly 2 is driven to retract, meanwhile, the anti-theft handle lock body connector 10 drives the linkage rod 14 to push leftwards, the lock core start piece 8 is driven to rotate clockwise around the rotating shaft of the lock core start piece 8, the buckle on the lock core start piece 8 is separated from the key lock hole 13, meanwhile, the main board start piece 7 rotates clockwise, the main lock bolt frame 4 is driven to retract by the matching of the second guide column 7-1 and the third sliding groove 4-4, and in the retracting process, the first guide column 4-1 slides downwards to the lower end of the triangular groove 3-1.

After adopting above-mentioned structure, this embodiment's beneficial effect is:

1. when the door is closed, the starting hook is utilized to drive the locking plate, so that the main bolt frame is unlocked and is popped out under the action of the torsion spring, and double locking can be realized without key operation;

2. when the door is opened, the lock cylinder starting sheet is used for rotating, the main bolt frame and the latch bolt assembly are driven to retract, and meanwhile, the main bolt frame is locked by the locking plate under the action of the torsion spring, so that the aim of quickly unlocking and opening the door can be fulfilled.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. An automatic lock, its characterized in that: the anti-theft lock comprises a lock shell (1), an oblique bolt component (2), a top and bottom hook (3), a main bolt frame (4), a starting hook (5), a lock plate (6), a main plate starting sheet (7), a lock cylinder starting sheet (8), a resistance rod (9), an anti-theft handle lock body connector (10), a key lock hole (13), a lock cylinder torsion spring (15), a lock plate torsion spring (16), a spring (17) and a top and bottom hook torsion spring (18); the two top and bottom hooks (3) are bilaterally and movably inserted in the lock shell (1), a top and bottom hook torsion spring (18) is sleeved on a rotating shaft at the bottom of the inner wall of the lock shell (1), one end of the top and bottom hook torsion spring (18) is fixed on the bottom wall of the top and bottom hook (3), the other end of the top and bottom hook torsion spring is abutted against the inner wall of the bottom of the lock shell (1), a plate body of a main spring bolt frame (4) is vertically and movably arranged at the position below the inner ends of the two top and bottom hooks (3), first guide columns (4-1) are bilaterally and symmetrically fixed on the plate body of the main spring bolt frame (4), and the first guide columns (4-1) are movably arranged in triangular grooves (3-1) formed in the inner ends of the top and bottom hooks; a first sliding groove (4-2), a second sliding groove (4-3) and a third sliding groove (4-4) are formed in a plate body of the main bolt frame (4), wherein the third sliding groove (4-4) is transversely arranged on the left side of the second sliding groove (4-3), the second sliding groove (4-3) is arranged on the left side of the first sliding groove (4-2), and the first sliding groove and the second sliding groove are both vertically arranged; the inner end of the resistance rod (9) penetrates through the bottom wall of the lock shell (1) and then movably penetrates through the first sliding groove (4-2); a third guide post (12) is movably arranged in the second sliding groove (4-3), the bottom end of the third guide post (12) is fixed on the inner wall of the lock shell (1), a second guide post (7-1) is movably arranged in the third sliding groove (4-4), the second guide post (7-1) is fixed on a mainboard starting sheet (7), a lock core starting sheet (8) is arranged above the mainboard starting sheet (7), the mainboard starting sheet (7) is arranged below the plate body of the main lock tongue frame (4), the lock core starting sheet (8) is arranged above the plate body of the main lock tongue frame (4), the end parts of the mainboard starting sheet (7) and the lock core starting sheet (8) are rotatably connected in the lock shell (1) by the same rotating shaft, a lock core torsion spring (15) is sleeved on the rotating shaft, one end of the lock core torsion spring (15) is fixed on the inner wall of the lock shell (1), the other end of the lock core torsion spring is fixed on the mainboard starting sheet (7), the buckle of the lock cylinder starting sheet (8) is matched and clamped with the key lock hole (13); the key lock hole (13) is inserted in the lock case (1): the lower end angle of the lock cylinder starting sheet (8) is connected with a linkage rod (14) in a screwing mode through a shaft, the other end of the linkage rod (14) is connected with an anti-theft handle lock body connector (10) in a screwing mode through the shaft, the anti-theft handle lock body connector (10) is inserted into the lock shell (1), the upper end angle of the anti-theft handle lock body connector (10) is movably contacted with a starting hook (5), the starting hook (5) is fixed on a rod body of an oblique tongue component (2), a spring (17) is sleeved on the rod body of the oblique tongue component (2), the oblique tongue component (2) is movably inserted into the lock shell (1), and the oblique tongue component (2) is arranged below a ground hook (3) on the right side; the inner end angle of the starting hook (5) is movably contacted with the outer end angle of the locking plate (6), the locking plate (6) is screwed in the lock shell (1) by a rotating shaft, a locking plate torsion spring (16) is sleeved on the rotating shaft, one end of the locking plate torsion spring (16) is fixed on the inner wall of the lock shell (1), the other end of the locking plate torsion spring is fixed on the side wall of the locking plate (6), and a positioning piece (6-1) on the lower end of the locking plate (6) is movably clamped with a bayonet (4-5) arranged on the side wall of the plate body of the main bolt frame (4).

2. An automatic lock, according to claim 1, characterized in that: the left side of the key lock hole (13) is provided with a safety plate (11), and the safety plate (11) is fixed in the lock shell (1).

3. An automatic lock, according to claim 1, characterized in that: the working principle is as follows: when the door is closed, the door frame of the latch bolt assembly (2) retracts under pressure, the starting hook (5) is driven to retract in the retracting process, the inner end angle of the starting hook (5) is in contact with the outer end angle of the locking plate (6) in the retracting process, the locking plate (6) is driven to rotate around a rotating shaft connected with the starting hook, so that the positioning piece (6-1) on the locking plate (6) is separated from the bayonet (4-5) on the side wall of the plate body of the main bolt frame (4), the main bolt frame (4) is unlocked at the moment, the main plate starting piece (7) rebounds under the action of a lock core torsion spring (15) on the rotating shaft of the main plate starting piece (7), the second guide column (7-1) rotates anticlockwise by taking the rotating shaft on the main plate starting piece (7) as the circle center, and the second guide column (7-1) is matched with the third sliding chute (4-4) so as to drive the main, meanwhile, the top and bottom hook (3) extends outwards under the resilience effect of the top and bottom hook torsion spring (18), namely the lock tongue of the main lock tongue frame (4) automatically pops up, at the moment, the buckle of the lock cylinder starting sheet (8) and the inner end of the key lock hole (13) are hooked and locked mutually, and the guide column (4-1) moves up to the upper end of the triangular groove (3-1), so that the left and right top and bottom hooks (3) are driven to extend out, the oblique tongue component (2) pops up and locks under the resilience effect of the spring (17), and in the popping process, the inner end of the resistance rod (9) and the first sliding groove (4-2) are matched and arranged in a sliding mode to play a role in speed reduction and silence;

when a key is used for opening the door, the key is inserted into the key lock hole (13) to rotate, so that the lock core starting sheet (8) is driven to rotate clockwise around a rotating shaft on the lock core starting sheet, meanwhile, the main board starting sheet (7) simultaneously rotates clockwise, the second guide column (7-1) connected to the main board starting sheet (7) is positioned in the third sliding groove (4-4) to slide, so that the main lock tongue frame (4) is driven to descend until the bayonet (4-5) on the right side of the board body of the main lock tongue frame (4) meets the positioning sheet (6-1) on the locking plate (6), at the moment, the locking plate (6) rotates under the action of the locking plate torsion spring (16) on the rotating shaft, so that the positioning sheet (6-1) is clamped with the bayonet (4-5), the locking of the main lock tongue frame (4) is realized, and in the descending process of the main lock, the first guide post (4-1) slides downwards to the lower end of the triangular groove (3-1) to drive the left and right top and bottom hooks (3) to retract, the linkage rod (14) is driven to move to the left side while the lock cylinder starting sheet (8) rotates clockwise, the other end of the linkage rod (14) drives the anti-theft handle lock body connector (10) to rotate clockwise around a rotating shaft screwed with the anti-theft handle lock body connector, and in the rotating process of the anti-theft handle lock body connector (10), the upper end corner of the linkage rod is in contact with the starting hook (5) and presses the starting hook (5) downwards, so that the latch bolt assembly (2) is driven to retract to realize door opening;

when the door is opened by utilizing the anti-theft handle lock body connector (10), the anti-theft handle lock body connector (10) is rotated clockwise, the upper end of the anti-theft handle lock body connector (10) contacts with the starting hook (5) in an angular mode, the starting hook (5) is pressed downwards, so that the latch bolt assembly (2) is driven to retract, meanwhile, the anti-theft handle lock body connector (10) drives the linkage rod (14) to be pushed leftwards, so that the lock core starting sheet (8) is driven to rotate clockwise around the rotating shaft of the lock core starting sheet (8), the buckle on the lock core starting sheet (8) is separated from the key lock hole (13), meanwhile, the main board starting sheet (7) also rotates clockwise, the main board starting sheet (7) is matched with the third sliding groove (4-4) to drive the main lock bolt frame (4) to retract, in the retracting process, the first guiding column (4-1) slides downwards to the lower end of the triangular groove (, the door opening is realized.