CN116517401A

CN116517401A - Automatic lock

Info

Publication number: CN116517401A
Application number: CN202310675895.8A
Authority: CN
Inventors: 陈叶锋; 舒妙林; 朱浙永
Original assignee: Zhejiang Zhonghao Security Technology Co ltd
Current assignee: Zhejiang Zhonghao Security Technology Co ltd
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2023-08-01
Also published as: CN108252587A; CN108252587B

Abstract

The invention provides an automatic lock, and belongs to the technical field of locks. The automatic locking device solves the problems that potential safety hazards exist in the existing automatic locking. The quick locking mechanism comprises a poking pin, a guide hook and a rotary spring, wherein the poking pin is arranged on the lock body, the guide hook is rotatably arranged on the oblique tongue plate, two ends of the rotary spring are respectively connected with the guide hook and the poking pin, a draw hook is arranged on the guide hook, the guide hook can move along with the oblique tongue plate and simultaneously rotate to enable the draw hook to be rotated to be separated from the bayonet lock by driving the draw hook to rotate when the oblique tongue pops out, and the lock tongue pops out. The invention has the advantage that the lock tongue can be ejected to lock by pressing the oblique tongue by closing the door.

Description

Automatic lock

Technical Field

The invention belongs to the technical field of locks, and particularly relates to an automatic lock.

Background

The existing automatic lock generally comprises an inclined tongue and a lock tongue, the inclined tongue can automatically pop up after the door is closed, the locking and the popping up of the lock tongue are realized through a key or a handle, however, when people leave after the door is closed, the locking of the lock tongue can be forgotten sometimes, and potential safety hazards exist.

Disclosure of Invention

The invention aims at overcoming the defects of the prior automatic lock, and provides the automatic lock which can lead a lock tongue to pop out of the lock by touching and pressing a bevel tongue.

The aim of the invention can be achieved by the following technical scheme:

an automatic lock is composed of a panel, a lock body consisting of a locking hook, a locking torsion spring, a locking pin and a locking torsion spring, and features that said locking hook is pivoted to said locking tongue, said locking torsion spring is pivoted to said locking tongue and has its both ends between said locking hook and said locking tongue, said locking pin is fixed to said lock body, and said locking torsion spring is used to fix said locking tongue, the quick locking mechanism comprises a poking pin, a guide hook and a rotary spring, wherein the poking pin is arranged on the lock body, one side of one end of the guide hook is rotationally arranged on the inclined tongue plate, the other side of the end is connected with one end of the rotary spring, the other end of the rotary spring is connected to the poking pin positioned on one side of the guide hook, the other end of the guide hook extends along the retraction direction of the inclined tongue, the end is provided with a drag hook, the side of the guide hook positioned on the poking pin is provided with a guide edge, under the action of the rotary spring, the guide edge always leans against the poking pin, when the inclined tongue is pressed to retract into the lock body, the inclined tongue plate moves relative to the poking pin, the guide hook moves along with the inclined tongue plate and rotates simultaneously under the action of the guide edge until the drag hook is arranged on the drag hook, the inclined tongue is released, and the inclined tongue is driven to rotate through the drag hook to be separated from the drag pin under the action of the second thrust component, the tongue locking plate drives the tongue to pop out under the action of the first thrust component.

In the automatic lock, the locking mechanism further comprises a clamping plate and a tension spring, two ends of the tension spring are respectively connected to the lock body and the clamping plate and are in a stretching state, the clamping plate is connected with the lock body through a limiting structure, under the effect of the limiting structure, the clamping plate can only move back and forth along the direction perpendicular to the movement direction of the lock tongue relative to the lock body, the lock tongue plate is provided with a sliding block, the lock body is provided with a sliding groove for sliding the sliding block, the clamping plate is provided with a movable groove for the sliding block to penetrate through, the extending directions of the sliding groove and the movable groove are consistent with the movement direction of the lock tongue, two positioning notches on the same movable groove are arranged on the same side of the movable groove, when the lock tongue is switched between the locking state and the unlocking state, the sliding block can move from the positioning notch at one end of the movable groove to the positioning notch at the other end, and when the sliding block slides out of the positioning notch, the sliding block can move towards the direction of the tension spring to reset under the effect of the tension spring.

In the automatic lock, the limiting structure comprises a limiting groove and a limiting column, the limiting groove is formed in the clamping plate, the limiting column is located in the limiting groove and fixed on the lock body, and the extending direction of the limiting groove is perpendicular to the moving direction of the lock tongue.

In the automatic lock, the locking notch is formed in the locking tongue plate and is in a shape of a 7, the clamping hook is located at the upper portion of the 7, the hook groove is formed in the clamping hook, when the lock tongue is retracted, through the matching of the movement of the clamping plate and the movement of the lock tongue plate, the clamping pin slides upwards into the locking notch from the lower portion of the 7 relative to the locking notch and rotates in the direction of increasing torsion of the locking torsion spring in the sliding process until the clamping hook falls into the hook groove of the clamping hook, and the movement of the clamping pin along with the clamping plate to stretch the direction of the tension spring is limited by the hook groove, so that the locking tongue plate is fixed.

In the automatic lock, the oblique tongue plate is provided with the limiting piece, a limiting gap for preventing the end of the draw hook of the guide hook from tilting upwards is reserved between the limiting piece and the oblique tongue plate, and the guide hook always penetrates through the limiting gap to move.

In the automatic lock, the guide edge is arc-shaped.

In the automatic lock, the draw hook comprises a plurality of hook teeth.

In the automatic lock, the automatic lock further comprises a rotating assembly, the rotating assembly comprises a transmission tooth, a driving tooth, a shifting fork and a shifting piece, the transmission tooth is fixedly connected with the driving tooth and is arranged on the lock body through a rotating shaft in a rotating mode, the driving tooth is used for connecting a lock cylinder, one end of the shifting fork is provided with external teeth and is externally meshed with the transmission tooth, the other end of the shifting fork and the shifting piece are concentrically arranged on the lock body in a rotating mode, a square hole rotating piece for connecting a handle is arranged in the rotating center of the shifting fork and is in transmission connection with the shifting piece, the shifting fork, the shifting piece and the square hole rotating piece are connected through a clutch structure, a closing station and a separating station of the shifting fork are arranged on the lock body, when the shifting fork is located at the closing station, the locking bolt is in an unlocking state through the square hole rotating piece, the shifting bolt can drive the shifting piece to rotate independently, a shifting pin is arranged on the shifting piece, the shifting pin leans against the oblique tongue plate and can drive the oblique tongue plate to move along with the shifting piece, the oblique tongue plate can eject the oblique tongue plate under the action of the second thrust assembly, and the oblique tongue plate can reversely drive the shifting plate to return the shifting plate.

In the automatic lock, the clutch structure comprises a clutch member, the square hole rotating member, the shifting fork and the shifting plate are concentrically arranged, the shifting fork is fixed on the clutch member, the shifting fork and the shifting plate are all provided with inner holes which are circular and have the same size, two symmetrical limiting points are arranged on the inner holes of the clutch member, the shifting fork and the shifting plate, the limiting points on the clutch member and the shifting fork are overlapped along the projection of the central line of the inner hole, the square hole rotating member is positioned in each inner hole, the two limiting points in the same inner hole are respectively arranged on two sides of the square hole rotating member, the square hole rotating member can rotate in the range between the two limiting points or push the limiting points to synchronously rotate by leaning on the limiting points, and when the automatic lock is in the position combining state, the two limiting points on the clutch member are overlapped along the projection of the central line of the inner hole, and the two limiting points on the shifting plate are symmetrical along the projection of the central line of the inner hole.

In the automatic lock, the shifting pin and the rotating component are respectively arranged at two sides of the guide hook.

In the automatic lock, the first thrust component comprises a first guide rod and a first spring, one end of the first guide rod is fixed on the lock body, the other end of the first guide rod is arranged on the lock tongue plate in a penetrating mode, the extending direction of the first guide rod is consistent with the extending direction of the lock tongue, the first spring is sleeved on the first guide rod, two ends of the first spring are compressed and sprung between the lock tongue plate and the lock body, the first thrust component is provided with two groups, the driving teeth are arranged between the two groups of the first thrust components, the rotating shaft is provided with a balancing torsion spring, the lock body is provided with a positioning pin, one end of the balancing torsion spring is connected on the positioning pin, the other end of the balancing torsion spring is connected on the driving teeth, the acting force of the balancing torsion spring enables the driving teeth to have a trend of rotating in the extending direction of the driving lock tongue, and the acting force is gradually increased in the extending process of the lock tongue.

In the automatic lock, the total force of the two first springs and the balance torsion spring acting on the lock tongue plate is always unchanged.

In the automatic lock, the latch plate is further provided with a damper, the damper is provided with a damping rod, one end of the damping rod extends out of the damper to be propped against the panel, and the extending direction of the damping rod is consistent with the moving direction of the latch plate.

In the automatic lock, the lock body is further provided with a safety mechanism, the safety mechanism comprises a safety block and a safety spring, the safety block is rotationally arranged on the lock body, the clamping plate is provided with a clamping point, the safety block is provided with a shifting head, the shifting head can be propped against the clamping point, two ends of the safety torsion spring are respectively connected with the safety block and the lock body, and the shifting head is propped against the clamping point due to torsion of the safety torsion spring, so that the clamping plate is fixed.

In the automatic lock, the shifting head is in a V shape.

In the automatic lock, the pulling direction of the pulling head is crossed with the moving direction of the pulling plate.

In the automatic lock, the two ends of the lock body are provided with the heaven and earth rods.

Compared with the prior art, the locking mechanism has the advantages that the structure is compact, and the locking mechanism locks the lock tongue plate firmly; the lock can be quickly locked by touching and pressing the inclined tongue, and the locking is convenient; the balance torsion spring is arranged, so that the spring bolt can be effectively ensured to extend out to the proper position during locking, and the locking is reliable; under the action of the damper, the lock tongue moves stably, so that the lock tongue can effectively prevent collision, the service life is prolonged, and the noise is reduced; the safety mechanism reliably ensures that the bolt plate is firmly locked in the locked or unlocked state.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic structural view of a quick lock mechanism;

FIG. 3 is a schematic structural view of a tongue lock plate;

FIG. 4 is a schematic view of the structure of the clip;

FIG. 5 is a schematic view of a portion of a lock body

Fig. 6 is a schematic structural view of the clutch member.

In the figure, 1, a panel; 2. a lock body; 3. a bolt; 4. a tongue locking plate; 5. a beveled tongue; 6. a tongue plate; 7. a chute; 8. a first guide bar; 9. a first spring; 10. a second guide bar; 11. a second spring; 12. a drive tooth; 13. a drive tooth; 14. a shifting fork; 15. a pulling piece; 16. a clutch member; 17. square hole rotating piece; 18. a rotating shaft; 19. a hinged plate; 20. a poking pin; 21. a clamping plate; 22. a tension spring; 23. a clamping hook; 24. a bayonet lock; 25. a locking torsion spring; 26. a limit groove; 27. a limit column; 28. a movable groove; 29. positioning the notch; 30. a clamping notch; 31. a guide hook; 32. a rotary spring; 33. a balancing torsion spring; 34. a damper; 35. a damping rod; 36. a safety block; 37. a safety spring; 38. a poking head; 39. a stuck point; 40. restriction sites; 41. a slide block; 42. and a clutch plate.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the automatic lock provided by the invention comprises a panel 1, a lock body 2, a lock tongue 3, a lock tongue plate 4, a bevel tongue 5, a bevel tongue plate 6, a lock cylinder and a rotating assembly, wherein a locking mechanism and a quick locking mechanism are further arranged on the lock body 2. The panel 1 is arranged at the front end of the lock body 2, the panel 1 is provided with a lock tongue hole 3 and an inclined tongue hole 5, the lock tongue 3 is fixed at the front end of the lock tongue plate 4, the bottom surfaces of the left end and the right end of the lock tongue plate 4 are respectively provided with a sliding block 41, the lock body 2 is provided with sliding grooves 7 corresponding to the sliding blocks 41 one by one, as shown in fig. 5, the left end and the right end of the lock tongue plate 4 are respectively provided with a first thrust component, the first thrust components comprise a first guide rod 8 and a first spring 9 sleeved on the first guide rod 8, one end of the first guide rod 8 is fixed on the lock body 2, the other end of the first guide rod is penetrated on the lock tongue plate 4, the extending direction of the first guide rod 8 is consistent with the extending direction of the lock tongue 3, the first spring 9 is compressed and bounces between the lock body 2 and the lock tongue plate 4, and the first spring 9 can push the lock tongue plate 4 to drive the lock tongue 3 to move forwards to extend out of the lock tongue hole 3; the oblique tongue plate 6 is provided with a guide groove, the lock body 2 is provided with a guide post penetrating the guide groove, the opening direction of the guide groove is consistent with the movement direction of the oblique tongue 5, the guide post and the guide groove have a guide effect on the movement direction of the oblique tongue plate 6 and limit the front-back limit movement position of the oblique tongue plate 6, a second thrust component is arranged between the oblique tongue plate 6 and the lock body 2 and comprises a second guide rod 10 and a second spring 11 sleeved on the second guide rod 10, one end of the second guide rod 10 is fixed on the lock body 2, the other end of the second guide rod is penetrated on the oblique tongue plate 6, the extending direction of the second guide rod 10 is consistent with the extending direction of the oblique tongue 5, and the second spring 11 compresses and bounces between the lock body 2 and the oblique tongue plate 6; the first guide bar 8 and the second guide bar 10 are parallel.

The rotating assembly is arranged at the middle position of the lock body 2 and is positioned between the two first guide rods 8, the rotating assembly comprises a transmission tooth 12, a driving tooth 13, a shifting fork 14, a shifting piece 15, a clutch piece 16 and a square hole rotating piece 17, the transmission tooth 12 and the driving tooth 13 are fixedly connected up and down and are rotatably arranged on the lock body 2 through a rotating shaft 18, a hinged plate 19 is arranged on the bottom surface of the driving tooth 13, two ends of the hinged plate 19 are respectively hinged with the driving tooth 13 and the spring bolt plate 4, the driving tooth 13 can be driven to move back and forth through the hinged plate 19 by rotating the driving tooth 13, a lock cylinder is arranged at the left upper part of the driving tooth 13, a gear meshed with the driving tooth 13 is arranged on the lock cylinder, and the gear can be driven to rotate through key rotation, so that the driving tooth 13 is driven to rotate; one end of the shifting fork 14 is provided with external teeth and is externally meshed with the transmission gear 12, the other end of the shifting fork 14 is concentrically arranged with the shifting plate 15, the clutch piece 16 and the square hole rotating piece 17, the rotation center of the shifting fork 14 is positioned at the upper right part of the transmission gear 12, the square hole rotating piece 17 is provided with two and is concentrically arranged up and down, as shown in fig. 6, the clutch piece 16 comprises three clutch plates 42 which are sequentially arranged from top to bottom, the three clutch plates 42 are fixedly connected through a fixing piece, the shifting fork 14 is fixed on the upper clutch plate 42, the square hole rotating piece 17 positioned above is arranged in the inner holes of the shifting fork 14, the upper clutch plate 42 and the middle clutch plate 42, the shifting plate 15 is positioned between the middle clutch plate 42 and the lower clutch plate 42, and the square hole rotating piece 17 positioned below the inner holes of the shifting plate 15 and the lower clutch plate 42; the clutch plate 42, the shifting fork 14 and the inner holes of the shifting plate 15 are circular and have the same size, two symmetrically arranged inward convex limiting points 40 are arranged on each inner hole, a square hole for connecting a handle square steel is arranged in the center of the square hole rotating member 17, the periphery of the square hole rotating member 17 is formed by encircling two cambered surfaces and two planes, the two cambered surfaces and the two planes are respectively symmetrical, the two cambered surfaces are concentric, the circumferential diameters of the encircling two cambered surfaces are matched with the aperture of the inner hole of the shifting plate 15, the two limiting points 40 in the same inner hole are respectively arranged at two sides of the square hole rotating member, the square hole rotating member can rotate within the range between the two limiting points 40 or push the limiting points 40 to synchronously rotate by leaning on the limiting points 40, and the positions of the upper and lower square hole rotating members 17 are always consistent under the connection of the square steel; the right end of the shifting piece 15 is provided with a shifting pin 20, the right side of the inclined tongue plate 6 is provided with a concave groove, the shifting pin 20 leans against the inner wall of the groove, the shifting piece 15 can drive the inclined tongue plate 6 to move clockwise so as to enable the inclined tongue 5 to retract into the lock body 2, and when the inclined tongue 5 pops up under the action of the second spring 11, the inclined tongue plate 6 can reversely push the shifting pin 20 so as to enable the shifting piece 15 to rotate anticlockwise to return.

When both the lock tongue 3 and the inclined tongue 5 extend out to be in a locking state, the limiting point 40 of the inner hole of the shifting plate 15 is leaning against the lower square hole rotating piece 17, one of the limiting points is positioned at the right front part of the square hole rotating piece 17, the other limiting point 40 of the shifting fork 14 and the clutch plate 42 is positioned at the same position of the upper limiting point 40 of the shifting plate 15, so that the shifting plate 15 and the shifting fork 14 can synchronously rotate by rotating the square hole rotating piece 17 clockwise, and the shifting fork 14 is positioned at a closing position; when the lock tongue 3 is retracted to be in the unlocking state, the inclined tongue 5 is in the extending state, and the limiting points 40 of the inner hole of the shifting plate 15 are all leaned against the square hole rotating member 17, one of the limiting points 40 is positioned at the right front part of the square hole rotating member 17, the other limiting point 40 is positioned at the left rear part of the square hole rotating member 17, one limiting point 40 is positioned at the right rear part of the square hole rotating member 17, and the other limiting point 40 is positioned at the left front part of the square hole rotating member 17, so that the shifting plate 15 can only be rotated singly by rotating the square hole rotating member 17 clockwise, the shifting fork 14 is not moved, and the shifting fork 14 is positioned at the off-position.

The locking mechanism comprises a clamping plate 21, a tension spring 22, a clamping hook 23, a clamping pin 24 and a clamping torsion spring 25, wherein the clamping plate 21 is positioned at the rear side of the lock body 2, the tension spring 22 is positioned at the right end of the clamping plate 21, a fixing pin is arranged on the lock body 2, two ends of the tension spring 22 are respectively connected to the clamping plate 21 and the fixing pin and are in a stretching state, three limiting grooves 26 are formed in the clamping plate 21 from left to right, a limiting column 27 is arranged in each limiting groove 26, the limiting columns 27 are vertically fixed on the lock body 2, the extending direction of the limiting grooves 26 is perpendicular to the moving direction of the lock tongue plate 4, namely, the limiting columns extend from left to right, movable grooves 28 for the sliding blocks 41 to penetrate through are formed in the corresponding positions of the sliding blocks 41 of the lock tongue plate 4 on the clamping plate 21, the sliding blocks 41 sequentially penetrate through the movable grooves 28 and the sliding grooves 7 from top to bottom, the extending directions of the sliding grooves 7 and the movable grooves 28 are consistent with the moving direction of the lock tongue 3, positioning notches 29 are formed in two ends of the movable grooves 28, and the two positioning notches 29 on the same movable groove 28 are located at the left side of the movable groove 28. When the sliding block 41 moves to one end of the movable groove 28, under the action of the elastic force of the tension spring 22, the clamping plate 21 can move rightward along the extending direction of the limiting groove 26, so that the sliding block 41 is positioned in the positioning notch 29 at the end of the movable groove 28, and the sliding block 41 abuts against the positioning notch 29, at this time, the movable groove 28 and the corresponding lower sliding groove 7 are staggered left and right, the front and rear positioning notch 29 positions are the limiting positions of the sliding block 41 in front and rear movement, when the lock tongue 3 is switched from the locked state to the unlocked state, the sliding block 41 moves from the front positioning notch 29 to the rear positioning notch 29, and the sliding block 41 moves from the positioning notch 29 into the movable groove 28 and pushes the clamping plate 21 to move leftward through the movable groove 28, so that the clamping plate 21 moves left and right once and moves leftward and then moves rightward for resetting each time when the locked and unlocked states are switched.

The hook 23 is located on the right side of the oblique tongue plate 6, as shown in fig. 3, the right end of the hook 23 is rotatably disposed on the tongue plate 4, a locking notch 30 is formed on the tongue plate 4, the locking notch 30 is in a shape of "7", the hook 23 is located on the upper portion of the shape of "7", a hook groove is formed on the hook 23, the locking torsion spring 25 is sprung between the hook 23 and the tongue plate 4, the locking pin 24 is fixed on the locking plate 21, when the tongue 3 is retracted, through the cooperation of the movement of the locking plate 21 and the movement of the tongue plate 4, that is, the locking pin 24 moves left and right along with the locking plate 21, the tongue plate 4 moves down, so that the locking pin 24 slides upwards into the locking notch 30 from the lower portion of the shape of "7", and the hook 23 rotates clockwise in the sliding process, so as to gradually increase the torsion force of the locking torsion spring 25 until falling into the hook groove of the hook 23 to be locked. Since the lower portion of the latch 24 is blocked on the inner wall of the locking notch 30, the latch plate 4 cannot move forward, the latch 24 needs to move leftwards to be separated from the locking notch 30, and the hook 23 limits the movement of the latch 24 leftwards, so that the latch plate 4 can be locked.

As shown in fig. 1 and 2, the quick locking mechanism comprises a guide hook 31 and a rotary spring 32, the right side of the front end of the guide hook 31 is rotatably arranged on a inclined tongue plate 6, the left side of the front end is connected with one end of the rotary spring 32, the other end of the rotary spring 32 is connected with a poking pin 20 positioned on the right side of the guide hook 31, the poking pin 20 is positioned between the front end and the rear end of the guide hook 31, the rear end of the guide hook 31 extends along the retracting direction of a lock tongue 3, the end is provided with a drag hook, the drag hook comprises a plurality of hook teeth, a vertical limiting piece is arranged on the inclined tongue plate 6, a limiting gap is reserved between the bottom of the right side of the limiting piece and the upper surface of the inclined tongue plate 6, the guide hook 31 moves in the limiting gap in a penetrating way, the right side of the limiting piece extends to the right front of the limiting piece so as to ensure that the guide hook 31 is positioned in the limiting gap when rotating, and the limiting gap ensures that the guide hook 31 cannot tilt; the guide hook 31 is arranged on the side of the poking pin 20, the guide edge is arc-shaped, under the action of the rotary spring 32, the guide edge always leans against the poking pin 20, when the inclined tongue 5 is bumped and pressed to retract into the lock body 2, the guide hook 31 moves along with the lock tongue plate 4 and simultaneously rotates anticlockwise under the action of the guide edge through the limit action of the poking pin 20 until the hook hooks the hook 23, the inclined tongue 5 is released, the inclined tongue 5 ejects under the action of the second spring 11 and simultaneously drives the hook 23 to rotate clockwise to separate from the bayonet 24 through the hook, so that the lock tongue plate 4 ejects under the action of the first spring 9; when the poking plate 15 drives the inclined tongue plate 6 to move to open the inclined tongue 5, the poking pin 20 moves along with the inclined tongue plate 6, so that the guide hook 31 cannot rotate, and cannot be locked.

Because when the bolt 3 stretches out, the elasticity of the two first springs 9 can be reduced, the condition that the bolt 3 stretches out in place is likely to occur, so the rotating shaft 18 of the transmission gear 12 is provided with the balance torsion spring 33, the lock body 2 is provided with the locating pin, one end of the balance torsion spring 33 is hooked on the locating pin, the other end of the balance torsion spring is connected to the transmission piece, the acting force of the balance torsion spring enables the transmission piece to have a trend of rotating in the direction of driving the bolt 3 to stretch out, the acting force gradually increases in the process of stretching out the bolt 3, the total force of the two first springs 9 and the balance torsion spring 33 acting on the bolt plate 4 is unchanged all the time, the elasticity of the two first springs 9 gradually becomes smaller, and the force of the balance torsion spring 33 gradually increases, so that the bolt 3 is ensured to move in place.

The lock tongue plate 4 is further provided with a damper 34, the damper 34 is provided with a damping rod 35, one end of the damping rod 35 extends forwards from the damper 34 to be propped against the panel 1, and the damper 34 has a buffer effect on the lock tongue plate 4 in the extending process of the lock tongue 3, so that the lock tongue plate 4 moves stably, the lock tongue 3 is prevented from being collided, and a mute effect is achieved.

The lock body 2 is also provided with a safety mechanism which comprises a safety block 36 and a safety spring 37, wherein the safety block 36 is positioned at the left end of the clamping plate 21 and is rotationally arranged on the lock body 2, the clamping plate 21 is provided with a clamping point 39, the safety block 36 is provided with a poking head 38, the poking head 38 is in a V shape, the safety block 36 is rotated anticlockwise, the poking head 38 can obliquely downwards push against the clamping point 39, two ends of a safety torsion spring are respectively connected with the safety block 36 and a limit post 27 positioned at the left end of the clamping plate 21, the poking head 38 is tightly pushed against the clamping point 39 by the torsion of the safety torsion spring, so that the clamping plate 21 is fixed, the left-right movement of the clamping plate is limited, and the left-right movement of the clamping plate 21 is required for each movement of the locking tongue plate 4, so that the clamping plate 21 is fixed, and the locking tongue plate 4 can be fixed; the safety block 36 is rotated clockwise to separate the shifting head 38 from the locking point 39, and thus the unlocking is performed.

The two ends of the lock body 2 are provided with the heaven and earth rods, when the lock tongue 3 pops up, the heaven and earth rods on the left extend leftwards, the heaven and earth rods on the right extend rightwards, and when the lock tongue 3 retracts, the heaven and earth rods retract inwards.

The working process comprises the following steps:

when the key is unlocked, the shifting fork 14 is at the closing station, the key rotates, the driving tooth 13 and the transmission tooth 12 are driven by the gear to rotate anticlockwise, the hinge plate 19 is driven to move, the lock tongue plate 4 is pulled to open the lock tongue 3, the transmission tooth 12 rotates to enable the shifting fork 14 to leave the closing station, the shifting plate 15 is not moved, after the lock tongue 3 is opened in place, the shifting fork 14 is at the leaving station, the outer handle rotates clockwise to enable the shifting plate 15 to rotate clockwise alone, so that the inclined tongue plate 6 is pushed to move inwards by utilizing the process of clockwise rotation of the shifting pin 20 on the shifting plate 15, the inclined tongue 5 is opened, the outer handle is released after the door is opened, at the moment, the inclined tongue plate 6 moves forwards under the thrust of the second spring 11 to enable the inclined tongue 5 to pop up, and the shifting plate 15 rotates anticlockwise to return by the shifting pin 20 in the moving process of the inclined tongue plate 6.

When the inner handle is unlocked, the shifting fork 14 is at the closing station, the inner handle drives the square hole rotating piece 17 to rotate clockwise through square steel, the shifting fork 14 and the shifting piece 15 rotate clockwise synchronously, the shifting piece 15 pushes the inclined tongue plate 6 to move inwards through the shifting pin 20, the inclined tongue 5 is retracted, the shifting fork 14 drives the driving tooth 13 to rotate anticlockwise through the driving tooth 12, the hinge plate 19 is driven to move and pull down the lock tongue plate 4, the lock tongue 3 is retracted, after the lock tongue plate 4 moves in place, the inclined tongue plate 6 moves forwards under the thrust of the second spring 11 to enable the inclined tongue 5 to pop out, and the shifting piece 15 rotates anticlockwise to return through the shifting pin 20 in the moving process of the inclined tongue plate 6.

When the lock is locked, the door is closed, the oblique tongue 5 is pressed to drive the oblique tongue plate 6 to move, the poking piece 15 is not moved at the moment, in the moving process of the oblique tongue plate 6, the guide plate can rotate anticlockwise under the guide action of the poking pin 20 and move inwards and rotate until the draw hook on the guide plate catches the hook 23 positioned on the right side of the guide plate, when the oblique tongue 5 loses the external force of the impact, the oblique tongue plate 6 moves towards the extending direction of the oblique tongue 5 under the action of the second spring 11, so that the hook 23 can rotate clockwise through the draw hook to separate from the bayonet catch 24, and at the moment, the lock tongue plate 4 moves towards the extending direction of the lock tongue 3 under the thrust of the first spring 9 and drives the draw-pull plate 21 to move leftwards, so that the bayonet catch 24 is separated from the locking notch 30, and the lock tongue plate 4 drives the lock tongue 3 to pop up smoothly.

It should be understood that in the claims, the specification of the present invention, all "including … …" should be interpreted as open-ended meaning that it is equivalent to "at least … …", and not as closed-ended meaning that it should not be interpreted to "include … …" only.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An automatic lock comprises a lock body (2), a lock tongue (3), a lock tongue plate (4), an inclined tongue (5) and an inclined tongue plate (6), wherein the lock tongue (3) is fixedly connected with the lock tongue plate (4), the lock tongue (3) can extend or retract from a lock tongue hole, the inclined tongue (5) is fixedly connected with the inclined tongue plate (6), the inclined tongue (5) can extend or retract from the inclined tongue hole, a first thrust component and a second thrust component which enable the lock tongue (3) and the inclined tongue (5) to extend are respectively arranged on the lock body (2), the automatic lock is characterized by further comprising a locking mechanism and a quick locking mechanism, the locking mechanism comprises a clamping hook (23), a clamping pin (24) and a clamping torsion spring (25), the clamping hook (23) is rotatably arranged on the lock tongue plate (4), the clamping torsion spring (25) is rotatably arranged on the lock tongue plate (4) and two ends of the clamping hook (23) are in elastic contact with a position between the lock tongue plate (4), the clamping pin (24) is arranged on the lock body (2), when the lock body (3) is retracted, the clamping hook (23) can be hooked on the clamping pin (24) and the clamping torsion spring (20) is arranged under the locking mechanism (20), one end of a guide hook (31) is rotatably arranged on the inclined tongue plate (6) and the guide hook (31) is connected with one end of a rotary spring (32), the other end of the rotary spring (32) is connected to a pulling pin (20) positioned on one side of the guide hook (31), a drag hook is arranged at the other end of the guide hook (31), the guide hook (31) is positioned on the side of the pulling pin (20), a guide edge is arranged on the pulling pin (20) all the time under the action of the rotary spring (32), when the inclined tongue (5) is bumped to retract into a lock body (2), the inclined tongue plate (6) moves relative to the pulling pin (20), the guide hook (31) moves along with the inclined tongue plate (6) and rotates simultaneously under the action of the guide edge until the drag hook (23) is hooked, the inclined tongue (5) is released, the inclined tongue (5) pops up under the action of a second thrust component, and simultaneously the drag hook (23) is driven to rotate so as to separate from the blocking pin (24), and the lock plate (4) is driven to pop up under the action of the first thrust component.

2. The automatic lock according to claim 1, wherein the locking mechanism further comprises a pull-locking plate (21) and a tension spring (22), both ends of the tension spring (22) are respectively connected to the lock body (2) and the pull-locking plate (21) and are in a stretched state, the pull-locking plate (21) is connected with the lock body (2) through a limiting structure, under the effect of the limiting structure, the pull-locking plate (21) can only move back and forth along the direction perpendicular to the moving direction of the lock tongue (3), the lock tongue plate (4) is provided with a sliding block (41), the lock body (2) is provided with a sliding groove (7) for sliding the sliding block (41), the position of the pull-locking plate (21) corresponding to the sliding groove (7) is provided with a movable groove (28) for the sliding block (41) to penetrate, the extending directions of the sliding groove (7) and the movable groove (28) are consistent with the moving direction of the lock tongue (3), both ends of the movable groove (28) are provided with positioning notches (29), the two positioning notches (29) on the same movable groove (28) are positioned on the same side of the movable groove (28) along the direction perpendicular to the moving direction of the lock tongue (3), when the sliding block (29) is switched between the positioning notches (29) and the other end of the sliding block (29) in the state, and when the sliding block (41) slides out of the positioning notch (29), the clamping plate (21) is pushed to move towards the direction of stretching the tension spring (22), and when the sliding block (41) slides into the positioning notch (29), the clamping plate (21) moves towards the direction of compressing the tension spring (22) to reset under the action of the tension spring (22).

3. An automatic lock according to claim 2, wherein the locking plate (4) is provided with a locking notch (30), the locking notch (30) is in a shape of 7, the hook (23) is positioned at the upper part of the 7, the hook (23) is provided with a hook groove, when the lock tongue (3) is retracted, through the cooperation of the movement of the locking plate (21) and the movement of the locking plate (4), the locking pin (24) slides upwards into the locking notch (30) from the lower part of the 7 and makes the hook (23) rotate in the torsion increasing direction of the locking torsion spring (25) in the sliding process until the hook falls into the hook groove of the hook (23), and the hook groove limits the movement of the locking pin (24) along with the locking plate (21) in the direction of stretching the tension spring (22), so as to fix the locking plate (4).

4. An automatic lock according to claim 1 or 2, characterized in that the oblique tongue plate (6) is provided with a limiting piece, a limiting gap for preventing the end of the draw hook of the guide hook (31) from tilting upwards is reserved between the limiting piece and the oblique tongue plate (6), and the guide hook (31) is always penetrated in the limiting gap to move.

5. An automatic lock according to claim 1 or 2, further comprising a rotating assembly, wherein the rotating assembly comprises a transmission tooth (12), a driving tooth (13), a shifting fork (14) and a shifting plate (15), the transmission tooth (12) is fixedly connected with the driving tooth (13) and is rotatably arranged on the lock body (2) through a rotating shaft (18), the driving tooth (13) is used for connecting a lock cylinder, one end of the shifting fork (14) is provided with external teeth and is externally meshed with the transmission tooth (12), the other end of the shifting fork (14) and the shifting plate (15) are concentrically rotated, the rotating center of the shifting fork and the shifting plate (15) is provided with a square hole rotating piece (17) for connecting a handle, the shifting fork (14), the shifting plate (15) and the square hole rotating piece (17) are in transmission connection through a clutch structure, a locking station and a releasing station of the shifting fork (14) are arranged on the lock body (2), when the shifting fork (14) is positioned on the locking station, the shifting fork (3) is in the locking state, the shifting fork can drive the shifting fork (14) to rotate through the square hole rotating piece (17) to drive the shifting fork (14) to be in the independent rotating state (20) when the shifting fork (14) is positioned on the locking station, the poking pin (20) is leaned against the inclined tongue plate (6) and can rotate along with the poking piece (15) to drive the inclined tongue plate (6) to move so as to retract the inclined tongue (5), and when the inclined tongue (5) pops up under the action of the second thrust component, the inclined tongue plate (6) can reversely drive the poking pin (20) so as to enable the poking piece (15) to return.

6. The automatic lock according to claim 5, wherein the clutch structure comprises a clutch member (16), the clutch member (16) and the square hole rotating member (17), the shifting fork (14) and the shifting plate (15) are concentrically arranged, the shifting fork (14) is fixed on the clutch member (16), the shifting fork (14) and the shifting plate (15) are all provided with circular inner holes with the same size, two symmetrically arranged inward convex limiting points (40) are respectively arranged on the inner holes of the clutch member (16), the shifting fork (14) and the shifting plate (15), the projections of the limiting points (40) on the clutch member (16) and the shifting fork (14) along the center line of the inner holes are overlapped, the square hole rotating member (17) is positioned in each inner hole, the two limiting points (40) in the same inner hole are respectively arranged on two sides of the square hole rotating member, the square hole rotating member (17) can rotate in the range between the two limiting points (40) or push the limiting points (40) to synchronously rotate, and when the square hole rotating member (17) is positioned at the closing station, the projections of the two limiting points (40) on the clutch piece (16) and the two limiting points (40) on the poking piece (15) along the center line of the inner hole are overlapped, when the clutch piece is at the off-position, the projections of the two limiting points (40) on the clutch piece (16) and the two limiting points (40) on the poking piece (15) along the center line of the inner hole are symmetrical.

7. An automatic lock according to claim 5, wherein said setting pin (20) and said rotating assembly are provided separately on both sides of said guide hook (31).

8. An automatic lock according to claim 5, wherein the first thrust component comprises a first guide rod (8) and a first spring (9), one end of the first guide rod (8) is fixed on the lock body (2), the other end of the first guide rod is arranged on the lock tongue plate (4) in a penetrating way, the extending direction of the first guide rod (8) is consistent with the extending direction of the lock tongue (3), the first spring (9) is sleeved on the first guide rod (8) and the two ends of the first spring are compressed and sprung between the lock tongue plate (4) and the lock body (2), the first thrust component is provided with two groups, the driving teeth (13) are arranged between the two groups of first thrust components, the rotating shaft (18) is provided with a balance torsion spring (33), the lock body (2) is provided with a positioning pin, one end of the balance torsion spring (33) is connected on the positioning pin, the other end of the balance torsion spring (33) is connected on the driving teeth (13), and the acting force of the balance torsion spring (33) causes the driving teeth (13) to have a trend to rotate towards the extending direction of the lock tongue (3), and the acting force gradually increases when the lock tongue (3) extends.

9. An automatic lock according to claim 2 or 3, characterized in that the lock body (2) is further provided with a safety mechanism, the safety mechanism comprises a safety block (36) and a safety spring (37), the safety block (36) is rotatably arranged on the lock body (2), the clamping plate (21) is provided with a clamping point (39), the safety block (36) is provided with a shifting head (38), the shifting head (38) can be propped against the clamping point (39), two ends of the safety torsion spring are respectively connected with the safety block (36) and the lock body (2), and the torsion force of the safety torsion spring enables the shifting head (38) to prop against the clamping point (39), so that the clamping plate (21) is fixed.