CN207568359U - A kind of Automatic anti-theft lock - Google Patents

Abstract

The utility model discloses a kind of Automatic anti-theft lock, including carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge, lock housing；The carriage component includes square tongue, planker, limiting plate, limiting plate torsional spring；The latch bolt component includes latch bolt plate, pressing plate, top plate, top plate torsional spring, and the latch bolt plate includes latch bolt and connecting plate；The pulling axis component includes pulling axis and shift fork, and the shift fork includes shift fork connecting portion and shift fork clicking section；The gear assembly includes gear, swing arm and big shift fork, and the lock housing is equipped with multiple lock housing pins, is set on the lock housing pin close to the latch bolt component lower part there are one tongue torsional spring；Snap-gauge tension spring is connected between the snap-gauge and lock housing；The carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge are all connected in lock housing.The utility model is not only laborsaving but also convenient in use and can also be automatic locking, expands use scope.

Description

A kind of Automatic anti-theft lock

Technical field

The utility model is related to safe-guard door lock technical field, specifically, being related to a kind of Automatic anti-theft lock.

Background technology

Nowadays only there is locking, there is no really door lock after existing safe-guard door lock is fastened in the market On, it usually also needing to lock by key, present people’s lives rhythm is getting faster, and going out, to forget about locking a door be ordinary affair, Serious threat is brought to our life household property safeties in this way, and is locked a door with key, opening the door needs to use centainly Power, and old man and child will be very laborious when being unlocked.

Many Automatic anti-theft locks have been emerged currently on the market, these Automatic anti-theft locks are roughly divided into two kinds, and one kind is electricity Son lock, another kind is the theftproof lock for needing to be locked a door automatically by upper handle；The inside of electronic lock is all placed with battery, and It is also required to often replace the normal work that battery just can guarantee lockset in use, although easy to use, often replaces electricity It pond will be pretty troublesome；Another theftproof lock is to carry out automatic antitheft by above carrying door handle, but if has forgotten above to carry door knob Hand still can not lock on the door.

In view of this, work out it is a kind of not only laborsaving but also convenient and also can also self-locking Automatic anti-theft lock become as ability The problem of technical staff's urgent need to resolve in domain.

Invention content

The utility model is provided a kind of not only laborsaving but also convenient and can also be self-locking automatic according to above-mentioned technical background Theftproof lock fully solves the problems, such as that existing theftproof lock exists.

To solve the above problems, technical solution is used by the utility model：

A kind of Automatic anti-theft lock, including carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge, lock housing；

Further, the carriage component includes square tongue, planker, limiting plate, limiting plate torsional spring, and the square tongue is fixedly mounted The inner plane of outer surface at the top of the planker, the limiting plate and planker passes through pressing plate rivet and limiting plate pin connection, limit The limiting plate torsional spring is provided between position plate pin and limiting plate.During withdrawal unlocking is carried out, carriage component can be downward Mobile, limiting plate can be moved to snap-gauge pin side, and limiting plate can live snap-gauge pin card under the action of limiting plate torsional spring, in this way Carriage component would not move up, and realize the action withdrawn and unlocked.

Further, it is equipped on the limiting plate with the opposite side of the planker junction vertical with the limiting plate First convex block, the top of planker are equipped with compression spring guide rod, and the compression spring guide rod is equipped with compression spring.This first convex block can on top plate Pointed protrusion mutual cooperation effect, realizes the action of automatic spring locking.

Further, the latch bolt component includes latch bolt plate, pressing plate, top plate, top plate torsional spring, and the latch bolt plate includes Latch bolt and connecting plate, the latch bolt is wedge shaped, and the connecting plate is fixed on the bottom of the latch bolt, the one side peace of the connecting plate It fills the pressing plate and passes through pressing plate rivet and pressure plate stud is fixed, the another side of the connecting plate installs the top plate and simultaneously passes through tongue pin With limiting plate pin connection, the top plate with limiting plate pin connection at the top plate torsional spring is installed, the pressing plate is close to described The side of connecting plate edge is provided perpendicular to the second convex block of the pressing plate, and the top plate is close to described second convex block one end Side setting there are one pointed protrusion.During unlocking, shift fork clicking section can be pressed downward the second convex block of pressing plate so that tiltedly Tongue component moves downward, and realizes the purpose of unlocking.During automatic locking, latch bolt component is pushed, it is pointed convex on top plate The first convex block that rising will withstand on limiting plate moves upwards, and the mistake of automatic spring locking is realized under the action of compression spring Journey.

Further, the pulling axis component includes pulling axis and shift fork, and boss, the boss and pulling axis are set on the pulling axis Lug boss is provided between bottom, the shift fork includes shift fork connecting portion and shift fork clicking section, and the shift fork clicking section is connected to The side of the shift fork connecting portion, the shift fork connecting portion are hollow cylinder, and side is equipped with to be connected perpendicular to the shift fork The third convex block of socket part, the shift fork connecting portion are placed in across the pulling axis on the boss.The inside of shift fork connecting portion is set The fixture block of oriented convex, pulling axis side wall and boss junction are equipped with card slot, and shift fork fixes together with pulling axis, between the two can be with It is carried out at the same time rotation so that the process that shaft transmits movement is more accurate.

Further, pulling axis is connected with lock housing, and the hole being adapted with pulling axis is offered with pulling axis connection in lock housing, The bottom of pulling axis is connected across hole with lock housing.

Further, the gear assembly includes gear, swing arm and big shift fork, one end of the swing arm be provided with it is multiple with The intermeshing teeth of gear, the other end are provided with sickle-shaped protrusion, and the number of teeth of the gear is less than the swing arm teeth The number of teeth at end, the swing arm are fixed on big shift fork in the lock housing, and the big shift fork connect the side setting of one end with swing arm There is the 4th convex block.Gear is the equal of pinion gear compared with swing arm, and it is the equal of that small tooth drives canine tooth that gear is meshed with swing arm Movement, when withdrawing master latch, the ratio of power reaches 1.5:1 or so, while the ratio of power reaches 2 when withdrawing latch bolt:1 is left It is right so that unlocking dynamics is reduced to 50% or so, can cause so more laborsaving in door opening process, has convenient for old man and child It unlocks, increases the crowd used.

Further, the lock housing is equipped with multiple lock housing pins, is set on the lock housing pin close to the latch bolt component lower part There are one tongue torsional springs.The lock housing pin of setting can be connected with the rear cover of lock housing, and one end of tongue torsional spring is placed in the inside of lock housing, another End be placed on latch bolt component, during latch bolt is ejected, tongue torsional spring is in confined state, latch bolt component can be generated to On thrust so that latch bolt component is easier to be ejected.

Further, the carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge are all connected in lock housing. It can cause the structure of each component connects more to consolidate.

Further, planker pin, end and institute of the planker pin with planker junction are set in the mid-plane of the planker It states lock housing to be connected, be offered at the top of the lock housing and the corresponding hole of square tongue location and shape, the carriage component On square tongue pass through the lock housing at the top of hole be flexibly connected with the lock housing.Square tongue is connect across hole with lock housing, such to connect Connect mode and both can guarantee interconnection between carriage component and lock housing, also can guarantee have between carriage component and lock housing it is mutual It is mobile.

Further, the compression spring guide rod is connected with the opposite side of planker junction with the lock housing bottom.Into During the process of row automatic spring locking, it can be dragged with compressive state, carriage component compression spring during moving up at compression spring The upward motive force of plate component so that square tongue is easier to be ejected locking.

Further, the same position at the lock housing top and the top of planker is equipped with identical with the latch bolt size Hole, the latch bolt pass through the hole at the top of the lock housing and planker to be flexibly connected with the lock housing and planker.Latch bolt component relative to Lock housing, planker be free to move up and down, unrestricted.

The beneficial effects of the utility model：

The transmission principle of gear wheel is driven in the utility model using pinion gear, dynamics during unlocking can be mitigated, made out It is more laborsaving during lock, it unlocks convenient for old man and child, expands the crowd used；The clutch of latch bolt component is used in lockset Principle is carrying out at closing time, to realize self-locking process, is avoiding the property loss caused by forgetting locking and ask Topic had not only facilitated but also safe, and unlocking process is laborsaving, is suitble to the use of more crowds in use.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structure diagram of the utility model middle carriage component；

Fig. 3 is the structure diagram of latch bolt component in the utility model；

Fig. 4 is the structure diagram of pulling axis component in the utility model；

Fig. 5 is the structure diagram of the utility model middle gear component；

Fig. 6 is the structure diagram of snap-gauge in the utility model；

Fig. 7 is the structure diagram of the lock housing of the utility model；

Wherein, in figure

1- square tongues；

2- plankers；

3- limiting plates；

The first convex blocks of 31-；

4- limiting plate torsional springs；

5- pressing plate rivets；

6- limiting plate pins；

7- latch bolt plates；

71- latch bolts；

72- connecting plates；

8- pressing plates；

The second convex blocks of 81-；

9- top plates；

The pointed protrusions of 91-；

10- top plate torsional springs；

11- pressure plate studs；

12- tongue pins；

13- pulling axises；

131- boss；132- lug bosses；

14- shift forks；

141- shift fork connecting portions；142- shift forks clicking section；143- third convex blocks；

15- gears；

16- swing arms；

161- teeth；The sickle-shaped protrusions of 162-；

The big shift forks of 17-；

The 4th convex blocks of 171-；

18- snap-gauges；

The 5th convex blocks of 181-；

19- lock housings；

20- planker pins；

21- compression spring guide rods；

22- compression springs；

23- lock housing pins；

24- tongue torsional springs；

25- snap-gauge tension springs；

26- ships and resell on another market；

27- snap-gauge pins；

28- pressing sleeves.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe.

Embodiment：

A kind of Automatic anti-theft lock, including multiple pressing plate rivets 5, multiple limiting plate pins 6, pressure plate stud 11, tongue pin 12, planker pin 20th, multiple snap-gauge pins 27；

Further, carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge 18, lock housing 19 are further included；

Further, the carriage component includes square tongue 1, planker 2, limiting plate 3, limiting plate torsional spring 4, and the square tongue 1 is solid Outer surface of the Dingan County loaded on 2 top of planker, the inner plane of the limiting plate 3 and planker 2 pass through pressing plate rivet 5 and limiting plate Pin 6 connects, and is provided with the limiting plate torsional spring 4 between limiting plate pin 6 and limiting plate 3, on the limiting plate 3 with the planker 2 The opposite side of junction is set there are one first convex block 31 vertical with the limiting plate 3, and the top of planker 2 is equipped with compression spring guide rod 21, the compression spring guide rod 21 is equipped with compression spring 22.

Further, a sidewise hole internal projection in rectangular opening and hole is further opened on planker 2, unlock when snap-gauge 18 on The snap-gauge pin 27 of rectangular opening relative position is placed in the lower end of rectangular opening, and 2 component of planker moves down during unlocking, when snap-gauge pin 27 with Snap-gauge pin 27 will be moved integrally to the opposite side of boss during the boss contact of rectangular opening, at this time on carriage component The side of limiting plate 3 block the snap-gauge pin 27 of 18 end of snap-gauge, realize unlocking action.

Further, the latch bolt component includes latch bolt plate 7, pressing plate 8, top plate 9, top plate torsional spring 10, the oblique tongue plate Part 7 includes latch bolt 71 and connecting plate 72, and the latch bolt 71 is wedge shaped, and the connecting plate 72 is fixed on the bottom of the latch bolt 71, The side of the connecting plate 72 installs the pressing plate 8 and passes through pressing plate rivet 5 and pressure plate stud 11 is fixed, the connecting plate 72 it is another Side installs the top plate 9 and passes through tongue pin 12 and limiting plate pin 6 connects, and the top plate 9 is installed with 6 junction of limiting plate pin There is the top plate torsional spring 10, the pressing plate 8 is provided perpendicular to the pressing plate 8 close to the side of 72 edge of connecting plate Second convex block 82, there are one pointed raised 91 close to the setting of the side of described second convex block, 82 one end for the top plate 9.

Further, on connecting plate 72 by pressing plate rivet 5 and 8 junction of pressing plate, phase is opened up on connecting plate 72 and pressing plate 8 Answer the hole of position, the hole on connecting plate 72 is more than the hole opened up on pressing plate 8, big due to two apertures when 8 stress of pressing plate Small difference can cause pressing plate rivet 5 to be deviated to 9 side of top plate, and pressing plate rivet 5 can play certain thrust to top plate 9 and cause Top plate 9 be in from state.

Further, top plate 9 is in during progress clutch, and the dynamics ratio of tongue torsional spring 24 and top plate torsional spring 10 is 10:1, Such dynamics ratio causes top plate 9 carrying out clutch state to be more accurate, does not conform to when not appearing in the conjunction, should From when not from situation, reduce the problem in motion process, self-locking accuracy is more preferable, operation it is more square Just.

Further, when the state that theftproof lock is in out, in door closing procedure, latch bolt 71 is pushed to bottom, is pushed up at this time Plate 9 is in closed state, and during latch bolt 71 is restored to origin-location, pointed raised the 91 of top plate 9 can withstand limiting plate 3 First convex block 31, has the first convex block 31 upward thrust, and under the elastic force effect of compression spring 22, and carriage component can be to moving up It is dynamic, it realizes automatic locking.

Further, the pulling axis component includes pulling axis 13 and shift fork 14, and boss 131 is set on the pulling axis 13, described Lug boss 132 is provided between 13 bottom of boss 131 and pulling axis, the shift fork 14 includes shift fork connecting portion 141 and shift fork is stirred Portion 142, the pulling axis clicking section 142 are connected to the side of the shift fork connecting portion 141, and the shift fork connecting portion 141 is hollow Cylinder, side is equipped with the third convex block 143 perpendicular to the shift fork connecting portion 141, and the shift fork connecting portion 141 passes through The pulling axis 13 is placed on the boss 131.Shift fork clicking section 142 is placed in the second convex block 82 of latch bolt component center platen 8 Top, the during the motion meeting of shift fork clicking section 142 cause pressing plate 8 may be rotated 8 applied force of pressing plate.

Further, the gear assembly includes gear 15, swing arm 16 and big shift fork 17, one end setting of the swing arm 16 There are the multiple and 15 intermeshing teeth 161 of gear, the other end is provided with sickle-shaped raised 162, the tooth of the gear 15 Number less than the number of teeth at 16 teeth of swing arm, 161 end, be fixed on big shift fork 17 in the lock housing 19, described big by the swing arm 16 The side that shift fork 17 connect one end with swing arm 16 is provided with the 4th convex block 171.

Further, gear 15 and swing arm 16 intermeshing rotation belong to the structure that canine tooth drives small tooth, in this way can be It can be more laborsaving when being unlocked.

Further, sickle-shaped raised 162 in swing arm 16 are placed in one of the third convex block 143 on shift fork connecting portion 141 Side, during unlocking, swing arm 16 rotate when sickle-shaped raised 162 can catch on third convex block 143 drive shift fork 14 rotate.

Further, the carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge 18 are all connected to lock housing 19 On.

Further, planker pin 20 is set in the mid-plane of the planker 2,20 planker of planker pin, 2 junction End is connected with the lock housing 19, the top of the lock housing 19 offer with the corresponding hole of 1 location and shape of square tongue, Square tongue 1 on the carriage component passes through the hole at 19 top of lock housing to be flexibly connected with the lock housing 19.In carriage component Square tongue 1 is relative to also there is opposite movement during moving up and down between lock housing 19.

Further, the same position at 19 top of lock housing and the top of planker 2 is equipped with and 71 size of latch bolt Identical hole, the latch bolt 71 pass through the hole at 2 top of the lock housing 19 and planker to be flexibly connected with the lock housing 19 and planker 2. Lock housing 19 and the position that tongue pin 12 is connected on planker pin 20 on carriage component, latch bolt component, open up the first slot, when During carriage component and latch bolt component move down, planker pin 21 and the opposite with lock housing 19 of tongue pin 12 can be facilitated to move It is dynamic, and then it is easy to implement the action of locking and unlocking.

Further, the gear 15 is fixed in the lock housing 19.It is opened up in lock housing 19 opposite with 15 shape of gear The hole answered, gear 15 are fixed in lock housing 19.

Further, the both ends of the snap-gauge 18 are connected by pressing plate rivet 5 with the lock housing 19, in the snap-gauge 18 Between the snap-gauge pin 27 of position be connected with the planker 2.The second slot is opened up in snap-gauge 18 and rivet connection, it can be with The convenient snap-gauge 18 during unlocking and locking can move left and right.On carriage component with the snap-gauge pin in 18 centre position of snap-gauge 27 opposite positions open up rectangular opening, and rectangular opening is equipped with close to the side of latch bolt component to rectangle inner bulge, on snap-gauge 18 Snap-gauge pin 27 is placed in rectangular opening, and during unlocking and locking, snap-gauge pin 27 moves in raised rectangular opening, can To realize moving left and right for snap-gauge 18.

Further, the medial surface of the one end of the snap-gauge 18 far from the latch bolt component is provided perpendicular to the snap-gauge 18 the 5th convex block 181 is linked together by snap-gauge tension spring 25 between the 5th convex block lock housing pin 23 adjacent thereto. During unlocking, snap-gauge 18 can be moved to side during carriage component moves down, and snap-gauge tension spring 25 is in stretching shape State, when carriage component is moved to extreme lower position, under the pulling force effect of snap-gauge tension spring 25, snap-gauge 18 is restored to original position It puts.

Unlocking principle：

1st, it opens the lock with the key, key band moving gear 15 rotates clockwise, and it is same that gear 15 drives swing arm 16 to rotate counterclockwise When push carriage component on planker pin 20, carriage component moves down, sickle-shaped raised the 162 of swing arm 16 can catch on shift fork company The third convex block 143 of socket part 141, rotates clockwise shift fork 14, and shift fork clicking section 142 will be stirred on pressing plate 8 second convex Block 82 rotates clockwise pressing plate 8, and under the action of top plate torsional spring 10, top plate 9 is rotated counterclockwise around limiting plate pin 6, is pushed up at this time Plate 9 is in the state left, while limiting plate 3 moves down the snap-gauge blocked under the action of limiting plate torsional spring 4 on snap-gauge 18 Pin 27, carriage component is just fixed, reaches the state of unlocking.

2nd, it is unlocked by door handle, rotates clockwise door knob hand-motion pulling axis 13 and rotate, the lug boss 132 on pulling axis 13 blocks Firmly the 4th convex block 171 of big shift fork 17 drives big shift fork 17 to rotate counterclockwise, and big shift fork 17 drives planker pin 23 to move downward, and dials Axis 13 drives shift fork 14 to rotate, and the second convex block 82 that shift fork clicking section 142 will be stirred on pressing plate 8 rotates clockwise pressing plate 8, Under the action of top plate torsional spring 10, top plate 9 is rotated counterclockwise around limiting plate pin 6, and top plate 9 is in the state left at this time, simultaneously Limiting plate 3 moves down the snap-gauge pin 27 blocked under the action of limiting plate torsional spring 4 on snap-gauge 18, and carriage component is just fixed not It is dynamic, reach the state of unlocking.

Self-locking principle：

It is bled off after pushing latch bolt 71, latch bolt component returns to the original position for pushing latch bolt 71 under the elastic force effect of tongue torsional spring 24 It puts, for 71 component of latch bolt in rebound, top plate 9 is in the state of closure, and pointed raised 91 in springback process on top plate 9 are withstood The first convex block 31 on limiting plate 3, open-top limiting plate 3, and limiting plate 3 move up under the elastic force effect of compression spring, realize Self-locking process.

The clutch principle of latch bolt component：

From state：When 8 stress of pressing plate on latch bolt component, will be rotated counterclockwise centered on pressure plate stud 11, together When pressing plate 8 on pressing plate rivet 5 withstand top plate 9,9 stress of top plate is stopped after about 15 degree are rotated counterclockwise centered on limiting plate pin 6 Only, 31 a distance of the first convex block on limiting plate 3 is left in pointed raised 91 at this moment on top plate 9, at this time top plate be in from State.

The state of conjunction：When the pressing plate 8 on latch bolt component does not stress, when at this moment 71 stress of latch bolt moves in lock housing 19, Top plate 9 rotates clockwise reset under the elastic force of top plate torsional spring 10 centered on limiting plate pin 6, at this moment pointed convex on top plate 9 Playing 91 can push up on 31 position of the first convex block of limiting plate 3, and top plate is in the state closed at this time.

The utility model is not limited to above-mentioned preferred embodiment, and anyone should learn that the enlightenments in the utility model Under the structure change made, it is every have with the utility model it is same or similar as technical solution, belong to this practicality newly The protection domain of type.

Claims (10)

1. a kind of Automatic anti-theft lock, including multiple pressing plate rivets (5), multiple limiting plate pins (6), pressure plate stud (11), tongue pin (12), Planker pin (20), multiple snap-gauge pins (27)；It is characterized in that, further include carriage component, latch bolt component, pulling axis component, gear set Part, snap-gauge (18), lock housing (19)；

The carriage component includes square tongue (1), planker (2), limiting plate (3), limiting plate torsional spring (4), the fixed peace of the square tongue (1) Loaded on the outer surface at the top of the planker (2), the limiting plate (3) and the inner plane of planker (2) pass through pressing plate rivet (5) and limit Position plate pin (6) connects, and the limiting plate torsional spring (4), the limiting are provided between limiting plate pin (6) and the limiting plate (3) Plate (3) is equipped with first convex block (31) vertical with the limiting plate (3), planker with the opposite side of the planker (2) junction Top be equipped with compression spring guide rod (21), the compression spring guide rod (21) be equipped with compression spring (22)；

The latch bolt component includes latch bolt plate (7), pressing plate (8), top plate (9), top plate torsional spring (10), the latch bolt plate (7) Including latch bolt (71) and connecting plate (72), the latch bolt (71) is wedge shaped, and the connecting plate (72) is fixed on the latch bolt (71) Bottom, the one side of the connecting plate (72) installs the pressing plate (8) and simultaneously passes through pressing plate rivet (5) and pressure plate stud (11) fixation, The another side of the connecting plate (72) installs the top plate (9) and passes through tongue pin (12) and limiting plate pin (6) connection, the top plate (9) the top plate torsional spring (10) is being installed with limiting plate pin (6) junction, the pressing plate (8) is close to the connecting plate (72) The side of edge is provided perpendicular to the second convex block (81) of the pressing plate (8), and the top plate (9) is close to second convex block (81) there are one pointed raised (91) for the side setting of one end；

The pulling axis component includes pulling axis (13) and shift fork (14), and boss (131), the boss are set on the pulling axis (13) (131) lug boss (132) is provided between pulling axis (13) bottom, the shift fork (14) is including shift fork connecting portion (141) and dials It pitches clicking section (142), the shift fork clicking section (142) is connected to the side of the shift fork connecting portion (141), the shift fork connection Portion (141) is hollow cylinder, and side is equipped with the third convex block (143) perpendicular to the shift fork connecting portion (141), described Shift fork connecting portion (141) is placed in across the pulling axis (13) on the boss (131)；

The gear assembly includes gear (15), swing arm (16) and big shift fork (17), and one end of the swing arm (16) is provided with more A and gear (15) intermeshing teeth (161), the other end are provided with sickle-shaped raised (162), the gear (15) The number of teeth be less than the number of teeth at the swing arm (16) teeth (161) end, the swing arm (16) and big shift fork (17) are fixed on the lock On shell (19), the side that the big shift fork (17) connect one end with swing arm (16) is provided with the 4th convex block (171)；

The lock housing (19) is equipped with multiple lock housing pins (23), is equipped on the lock housing pin (23) close to the latch bolt component lower part One tongue torsional spring (24)；

Snap-gauge tension spring (25) is connected between the snap-gauge (18) and lock housing (19)；

The carriage component, latch bolt component, pulling axis component, gear assembly, snap-gauge (18) are all connected in lock housing (19).

2. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that set in the mid-plane of the planker (2) Planker pin (20) is put, planker pin (20) is connected with the end of the planker (2) junction with the lock housing (19), the lock housing (19) it offers at the top of and is passed through with the square tongue (1) the corresponding hole of location and shape, the square tongue (1) on the carriage component Hole at the top of the lock housing (19) is flexibly connected with the lock housing (19).

3. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that the compression spring guide rod (21) and planker (2) The opposite side of junction is connected with the lock housing (19) bottom.

4. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that lock housing (19) top and planker (2) The same position at top be equipped with the hole identical with the latch bolt (71) size, the latch bolt (71) is across the lock housing (19) It is flexibly connected with the hole at the top of planker (2) with the lock housing (19) and planker (2).

5. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that tongue pin (12) on the latch bolt component with The lock housing (19) is connected.

6. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that the pulling axis is connected in the lock housing.

7. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that ship and resell on another market there are one being set on the lock housing (19) (26), the big shift fork (17) and swing arm (16) are in turn secured to described ship and resell on another market on (26).

8. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that the gear (15) is fixed on the lock housing (19) on.

9. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that the both ends of the snap-gauge (18) pass through pressing plate Rivet (5) is connected with the lock housing (19), and the snap-gauge pin (27) in snap-gauge (18) centre position is connected with the planker (2) It connects.

10. a kind of Automatic anti-theft lock according to claim 1, which is characterized in that the snap-gauge (18) is far from the latch bolt The medial surface of one end of component is provided perpendicular to the 5th convex block (181) of the snap-gauge (18), the 5th convex block (181) with It is linked together between its adjacent lock housing pin (23) by snap-gauge tension spring (25).