CN212406391U - Top and bottom door lock with anti-picking function - Google Patents

Abstract

The utility model discloses a world lock with pick-proof function, including the casing, the square spring bolt that can stretch out and draw back in casing one side, install in the casing can connect into an organic whole and can stretch out and draw back from top to bottom with the crown bar and can connect into an organic whole and can stretch out and draw back from top to bottom with the crown bar second actuating lever, and the first actuating lever is close to the square spring bolt and sets up, still install the movable plug-in components that link with the square spring bolt in the casing, set up the recess that can supply one end of the movable plug-in components to stretch into on the first actuating lever, wherein, when the square spring bolt retracts in one side of the casing and opens the door, the square spring bolt drives the movable plug-; when the square bolt, the first driving rod and the second driving rod are used for locking the door, the movable plug-in unit resets and is inserted into the groove. The utility model discloses a world lock with pick-proof function can prevent that the world lock from being maliciously prized, has the high advantage of security.

Description

Top and bottom door lock with anti-picking function

Technical Field

The utility model belongs to the technical field of the tool to lock, concretely relates to world lock with pick-proof function.

Background

In order to improve the anti-theft performance of an existing household door, a main lock is arranged, and meanwhile the configuration of a top lock and a bottom lock is increased, so that the number of locking points of the household door is increased, generally speaking, the top lock and the bottom lock are arranged on the same side of a door leaf, and the top lock and the bottom lock are connected through a top rod and a bottom rod, wherein the top lock is called as the top lock and the bottom lock is called as the bottom lock, and the working principle of the household door is generally as follows: when the door is opened, the lock core is opened by a key, the square bolt retracts, the handle is pressed down by a certain angle (such as 45 degrees), the inclined bolt retracts, and a synchronous linkage mechanism (generally a link mechanism or a multi-rod mechanism) for linking the handle and the top and bottom lock can drive the top and bottom rods to retract simultaneously, so that the top and bottom lock exits from the lock holes of the upper and lower door frames, the door is opened, after the handle is released, the inclined bolt extends out, and the handle can return; when the door is locked, the handle is lifted by a certain angle (such as 45 degrees), the synchronous linkage mechanism drives the top and bottom rods to simultaneously extend out, so that the top and bottom locks are inserted into lock holes of upper and lower door frames, then the lock core is locked by a key or an indoor operating knob, the square tongue also extends out for locking, the door is locked, and the handle can return after the handle is released. When the door is locked, the door is simultaneously limited by the top lock, the ground lock, the square bolt and the oblique bolt, so that the safety is improved a lot.

However, most of the existing top and bottom door locks do not have the anti-prying function of the top and bottom door locks, which undoubtedly reduces the safety of the door locks.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages of the prior art, an object of the present invention is to provide a top and bottom door lock with a prying-resistant function, which can prevent the top and bottom door lock from being pried maliciously, and has the advantage of high safety.

The utility model discloses a reach its purpose, the technical scheme who adopts as follows:

a kind of world door lock with pick-proof function, including the body, extendible square lock tongue in one side of said body, can connect with the sky pole and connect into an organic whole and can be flexible up and down the first actuating lever and can connect into an organic whole and can be flexible up and down the second actuating lever with the ground pole in the said body, and the said first actuating lever is adjacent to the said square lock tongue and set up, also install the movable plug-in unit linking with said square lock tongue in the said body, offer the recess that can supply one end of the said movable plug-in unit to stretch into on the said first actuating lever, wherein, when the said square lock tongue retracts in one side of the said body and opens the door, the said square lock tongue drives the said movable plug-in unit to withdraw from the said recess; when the square bolt, the first driving rod and the second driving rod are used for locking the door, the movable plug-in unit resets and is inserted into the groove.

Furthermore, an opening groove is formed in the edge, close to the movable plug-in unit, of the square lock tongue, and an inclined part and a plane part which are mutually connected are formed; the movable plug-in comprises a plug and an elastic piece, the plug and the elastic piece are arranged in the direction perpendicular to the telescopic direction of the square lock tongue, the plug is provided with a transverse extending part and a longitudinal limiting part which are arranged in a mutually perpendicular mode, and one end, connected with the transverse extending part, of the longitudinal limiting part is connected with the inner wall of the shell through the elastic piece; after the square lock tongue, the first driving rod and the second driving rod are used for locking the door, the transverse extending part is in contact with the plane part, and the other end, far away from the elastic piece, of the longitudinal limiting part is inserted into the groove; when the square bolt retracts into one side of the shell to open the door, the inclined part pushes the plug to move along the direction far away from the first driving rod, so that the longitudinal limiting part withdraws from the groove.

Furthermore, a synchronous linkage mechanism and a rotary connector which can be linked with a handle are further arranged in the shell, the synchronous linkage mechanism comprises a tooth piece, a composite gear and a reverse gear, a first rack part is arranged at one end, close to the rotary connector, of the first driving rod, and a second rack part is arranged at one end, close to the rotary connector, of the second driving rod; the tooth piece is meshed with the first rack part through the compound gear, the first rack part is meshed with the second rack part through the reverse gear, the tooth piece is arranged on the rotating connector, and the tooth piece can rotate synchronously along with the rotating connector in the process of opening/locking the door by utilizing the handle.

Furthermore, the tooth piece is sleeved on the rotary connecting head, a notch is formed in the tooth piece to form a first blocking part and a second blocking part, a protrusion is arranged on the rotary connecting head and is positioned in the notch between the first blocking part and the second blocking part, and when the handle is used for locking a door, the protrusion is abutted against the first blocking part; when the handle is utilized to open the door, the bulge is abutted to the second blocking part.

Further, the compound gear includes a first gear portion and a second gear portion disposed coaxially with the first gear portion, wherein the first gear portion is engaged with the rack, and the second gear portion is engaged with the first rack.

Further, still install reset spring in the casing, reset spring is used for after the handle is accomplished the action of opening/locking the door, right the handle resets.

Further, still install auxiliary spring in the casing, have the flange portion that stretches out along the direction of keeping away from its axis of rotation on the edge of rotation connector, wherein, on the gyration route that the handle opened the door action and after the handle resets, the flange portion with auxiliary spring's one end is inconsistent.

Furthermore, an unlocking shifting block which can be driven by a key and a rotating shifting block which is used for driving the square lock bolt to stretch are further arranged in the shell, the rotating shifting block is in transmission connection with the unlocking shifting block, a sliding groove is formed in the square lock bolt, the rotating shifting block is provided with a shifting rod which can slide along the sliding groove, and when the square lock bolt completely extends out of one side of the shell, the shifting rod is abutted against the inner wall of the sliding groove and forms an included angle which can prevent the square lock bolt from retracting.

Furthermore, the deflector rod is in an L shape, wherein one end of the deflector rod is arranged opposite to the sliding groove and extends towards the sliding groove to form a sliding end, and the sliding end extends into the sliding groove and can slide along the sliding groove.

Further, the unlocking shifting block is provided with a third gear part, and the rotating shifting block is also provided with a fourth gear part connected with the shifting lever, wherein the third gear part is meshed with the fourth gear part.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a world lock sets up the recess through setting up on the first actuating lever that is close to square spring bolt setting and add the movable plug-in components that link with square spring bolt in the casing, so, on the one hand, in the in-process of opening the door, when retracting square spring bolt in one side of casing and carrying out the unblock once, square spring bolt can drive movable plug-in components and withdraw from in the recess for first actuating lever and second actuating lever can normally retract in the casing and carry out the unblock for the second time, thereby guaranteed the normal use of world lock; on the other hand, after utilizing first actuating lever and second actuating lever to accomplish the primary lock door, when carrying out the secondary lock door with the one side that the square lock tongue stretched out the casing again, the activity plug-in components reset and insert in the recess of first actuating lever and block the first actuating lever that is connected with the day pole for first actuating lever is the bullet of can't moving from top to bottom, and then makes the second actuating lever with the synchronous linkage of first actuating lever also can't moving from top to bottom, thereby can prevent that the world lock from being maliciously prized, has improved the security of lock.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic external structural view of a top-bottom door lock with a prying-resistant function according to an embodiment of the present invention;

fig. 2 is a schematic view of the front side of the top-bottom door lock with anti-picking function in the embodiment of the present invention;

fig. 3 is a schematic view of an inner back side of a top-bottom door lock with a prying-proof function according to an embodiment of the present invention;

fig. 4 is a schematic view of the front inside of the top-bottom door lock with anti-picking function according to an embodiment of the present invention;

fig. 5 is a schematic view of an inner back side of a top-bottom door lock with anti-prying function according to an embodiment of the present invention;

fig. 6 is a schematic view of a linkage principle between the square bolt and the movable plug-in unit according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a movable plug-in unit according to an embodiment of the present invention;

fig. 8 is an assembly view of the rotary connector, the tooth plate and the return spring according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a rotary shifting block according to an embodiment of the present invention.

Description of reference numerals:

1-housing, 11-blocking block, 2-square bolt, 211-inclined part, 212-plane part, 22-chute, 3-first driving rod, 31-groove, 32-first connector, 33-first rack part, 4-second driving rod, 41-second connector, 42-second rack part, 5-movable plug, 5 a-plug 5a 1-longitudinal limiting part, 5a 2-transverse extension part, 5 b-elastic part, 51-toothed piece, 511-first blocking part, 512-second blocking part, 52-composite gear, 521-first gear part, 522-second gear part, 53-reverse gear, 6-rotary connector, 61-square hole, 62-projection, 63-flange part, 64-spring installation groove, 71-return spring, 72-auxiliary spring, 8-unlocking shifting block, 81-third gear part, 82-rectangular reserved hole, 9-rotary shifting block, 91-shifting lever, 911-sliding end and 92-fourth gear part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, 2, 3 and 6, an embodiment of the present invention provides a top-bottom door lock with anti-picking function, including a housing 1, a square bolt 2 retractable on one side of the housing 1, a first driving rod 3 (illustratively, the first driving rod 3 has a first connector 32 at one end for connecting with the top pole) and a second driving rod 4 (illustratively, the second driving rod 4 has a second connector 41 at one end for connecting with the ground pole) installed in the housing 1, the first driving rod 3 and the second driving rod 4 are synchronously linked, the first driving rod 3 is adjacent to the square bolt 2, a movable plug-in unit 5 linked with the square bolt 2 is also installed in the housing 1, a groove 31 for inserting one end of the movable plug-in unit 5 is opened on the first driving rod 3, when the square bolt 2 retracts into one side of the shell 1 to open the door, the square bolt 2 drives the movable plug-in unit 5 to withdraw from the groove 31; when locking the door using the square bolt 2, the first driving lever 3 and the second driving lever 4, the movable plug 5 is reset and inserted into the groove 31. In some embodiments, the first driving rod 3 and the second driving rod 4 may be linked in synchronization through an existing link mechanism or a multi-rod mechanism (i.e., when the handle is rotated, the first driving rod 3 and the second driving rod 4 may synchronously extend out of the casing 1 or retract into the casing 1).

According to the top and bottom door lock, the groove 31 is formed in the first driving rod 3 which is arranged adjacent to the square bolt 2, and the movable plug-in 5 which is linked with the square bolt 2 is additionally arranged in the shell 1, so that on one hand, when the square bolt 2 retracts into one side of the shell 1 for primary unlocking (when a user opens the door, the square bolt 2 retracts into the shell 1 by using a key or operating a hand button indoors), the square bolt 2 can drive the movable plug-in 5 to withdraw from the groove 31, so that the first driving rod 3 and the second driving rod 4 can normally retract into the shell 1 for secondary unlocking, and the normal use of the top and bottom door lock is ensured; on the other hand, after utilizing first actuating lever 3 and second actuating lever 4 to accomplish the primary lock door (the user is when locking the door, the accessible rotates the mode of handle and stretches out first actuating lever 3 and second actuating lever 4 simultaneously casing 1 for it/the ground lock can realize once locking the door in the lockhole of upper and lower door frame), when stretching out square bolt 2 one side of casing 1 again and carrying out the secondary lock door, movable plug-in 5 resets and inserts in the recess 31 of first actuating lever 3 and blocks the first actuating lever 3 that is connected with the day pole, make first actuating lever 3 can't move the bullet from top to bottom, and then make second actuating lever 4 with the synchronous linkage of first actuating lever 3 also can't move the bullet from top to bottom, thereby can prevent that the world lock from being maliciously pried, the security that has improved the lock. It should be noted that, based on the above structural design, no matter whether the user operates the square bolt 2 first or operates the natural lock first when locking the door, the movable insert 5 is inserted into the groove 31 of the first driving rod 3 to lock the first driving rod 3 after completing the door locking action.

Further, referring to fig. 2 to 7, in an exemplary embodiment, an edge of the square bolt 2 adjacent to the movable insert 5 is opened with an open slot (not shown) and forms an inclined portion 211 and a plane portion 212 which are engaged with each other; the movable plug-in 5 comprises a plug 5a and an elastic piece 5b which are arranged along the extension direction perpendicular to the square bolt 2, the plug 5a is provided with a transverse extension part 5a2 and a longitudinal limit part 5a1 which are arranged perpendicular to each other, and one end of the longitudinal limit part 5a1 connected with the transverse extension part 5a2 is connected with the inner wall of the shell 1 through the elastic piece 5 b; after the door is locked by using the square bolt 2, the first driving lever 3 and the second driving lever 4, the transverse extending part 5a2 contacts with the plane part 212, and the other end of the longitudinal limiting part 5a1 far away from the elastic piece 5b is inserted into the groove 31; when the square bolt 2 retracts into one side of the housing 1 to open the door, the inclined portion 211 pushes the plug 5a to move in a direction away from the first driving lever 3, so that the longitudinal direction stopper portion 5a1 is withdrawn from the recess 31. The elastic member 5b may be a spring, a spring plate, a rubber band, or other elastic member, as long as the use requirement is met, and this embodiment is not particularly limited thereto, and illustratively, the elastic member 5b is a pressure spring.

In this embodiment, based on the above structural design, after the first driving rod 3 and the second driving rod 4 are used to complete primary door locking, when the square bolt 2 extends out of one side of the housing 1 to perform secondary door locking, under the elastic restoring force of the elastic piece 5b, the plug 5a is reset, so that the longitudinal limiting portion 5a1 is inserted into the groove 31 of the first driving rod 3 to block the first driving rod 3, the first driving rod 3 cannot move up and down, and the second driving rod 4 synchronously linked with the first driving rod 3 cannot move up and down, thereby preventing the heaven-earth lock from being maliciously pried, and improving the safety of the door lock; on the other hand, in the process of opening the door, when the square bolt 2 retracts into one side of the housing 1 for primary unlocking, the square bolt 2 can drive the longitudinal limiting part 5a1 of the plug 5a to withdraw from the groove 31, so that the first driving rod 3 and the second driving rod 4 can normally retract into the housing 1 for secondary unlocking, and the normal use of the heaven and earth lock is ensured.

Further, referring to fig. 2 to 8, in an exemplary embodiment, a synchronous linkage mechanism and a rotary connector 6 which can be linked with a handle (not shown in the figures) are further installed in the housing 1, the synchronous linkage mechanism comprises a toothed plate 51, a compound gear 52 and a reverse gear 53, one end of the first driving rod 3 close to the rotary connector 6 is provided with a first rack portion 33, and one end of the second driving rod 4 close to the rotary connector 6 is provided with a second rack portion 42; the teeth 51 are engaged with the first rack portion 33 through the compound gear 52, the first rack portion 33 is engaged with the second rack portion 42 through the counter gear 53, the teeth 51 are provided on the rotary joint 6, and the teeth 51 can rotate synchronously with the rotary joint 6 in the process of opening/locking the door by the handle. Illustratively, have a square hole 61 on the rotation connector 6, this square hole 61 can cooperate with the square shaft on the conventional handle, so, when rotating the handle, the handle can drive and rotate connector 6 synchronous rotation.

In this embodiment, based on above-mentioned structural design, not only can realize the synchronous linkage between first actuating lever 3 and the second actuating lever 4, make the user can drive the world lock through rotating the handle and open or close, realize locking the door or opening the door, it is very convenient to operate, moreover, compare with the linkage mode that link mechanism or multi-bar mechanism were adopted to the tradition, this embodiment is through adopting the linkage mode of this kind of "gear + rack", compact structure, can avoid the arm length problem that the rod structure exists, reach the effect of saving inner space, thereby be favorable to reducing the whole volume of world lock.

Further, referring to fig. 2, 4 and 8, in an exemplary embodiment, the tooth piece 51 is sleeved on the rotary connector 6 (illustratively, the tooth piece 51 is sleeved on one end of the rotary connector 6), the tooth piece 51 is provided with a notch (not shown) and forms a first stopper 511 and a second stopper 512, the rotary connector 6 is provided with a protrusion 62, the protrusion 62 is located in the notch between the first stopper 511 and the second stopper 512, wherein, when the handle is used to lock the door, the protrusion 62 is abutted against the first stopper 511; when the handle is used to open the door, the projection 62 abuts against the second stopper 512.

In the present embodiment, based on the above structural design, the tooth piece 51 can rotate synchronously with the rotary connector 6 during the door opening action (i.e., clockwise rotation of the rotary connector 6 in fig. 4) or the door locking action (i.e., counterclockwise rotation of the rotary connector 6 in fig. 2) by the handle.

Further, referring to fig. 2 and 3, in an exemplary embodiment, the compound gear 52 includes a first gear portion 521 and a second gear portion 522 coaxially disposed with the first gear portion 521, wherein the first gear portion 521 is engaged with the rack 51, and the second gear portion 522 is engaged with the first rack 33. Illustratively, the outer diameter of the first gear portion 521 is smaller than the outer diameter of the second gear portion 522.

In this embodiment, based on the above structural design, the transmission between the rack 51 and the first rack portion 33 is realized, so that the rack 51 can drive the first driving rod 3 to move up and down during the door opening/locking action of the user using the handle, and the end of the first driving rod 3 connected with the top rod can retract downwards or extend upwards out of the housing 1.

Further, referring to fig. 2, 4 and 8, in an exemplary embodiment, a return spring 71 is further installed in the housing 1, and the return spring 71 is used for returning the handle after the handle completes the door opening/locking action. Illustratively, the reset spring 71 is a torsion spring, a spring mounting groove 64 is provided in the rotary connector 6, a blocking block 11 is provided on the housing 1 and is close to the rotary connector 6, wherein the reset spring 71 is disposed in the spring mounting groove 64, one end of the reset spring 71 is abutted against one side of the blocking block 11, and the other end is abutted against the other side of the blocking block 11.

In this embodiment, based on above-mentioned structural design for can realize reseing after rotating connector 6 takes place to rotate, consequently, after utilizing the handle to accomplish the action of opening/locking the door, under reset spring 71's effect, the handle can realize reseing (lift the handle on promptly or push down the handle after, if loosen the handle this moment, the initial position can be got back to the handle, wherein, generally, when the initial position was got back to the handle, the handle was in the horizontality).

Further, referring to fig. 2, 4 and 8, in an exemplary embodiment, an auxiliary spring 72 is further installed in the housing 1, and a flange portion 63 protruding in a direction away from a rotation axis of the rotary connector 6 is provided on an edge of the rotary connector, wherein the flange portion 63 abuts against one end of the auxiliary spring 72 on a rotation path of the handle in a door opening operation and after the handle is returned. Illustratively, the auxiliary spring 72 is a torsion spring, and one end of the auxiliary spring 72, which is in contact with the flange portion 63, is bent along a side facing away from the flange portion 63.

In this embodiment, based on the above structural design, by additionally providing the auxiliary spring 72, on one hand, the phenomenon that the handle swings down due to performance degradation after the return spring 71 is used for a long time can be avoided (that is, the handle deviates from the horizontal position downwards, so that not only the appearance of the door lock is affected, but also the subsequent use experience of the user is affected); on the other hand, when the handle is at the initial position, the return spring 71 has an elastic tendency of restraining the handle from swinging downward, and one end of the auxiliary spring 72 can block the handle, so that the top-bottom door lock of the embodiment can adapt to handles with different weights, and the handles with different weights can be kept in a horizontal state after being reset (namely, even if the handle heavier than the original handle is replaced, the replaced handle can still be kept in a horizontal position).

Further, referring to fig. 2 and 4, in an exemplary embodiment, an unlocking shift block 8 for driving a key and a rotating shift block 9 for driving the square bolt 2 to extend and retract are further installed in the housing 1, the rotating shift block 9 is in transmission connection with the unlocking shift block 8, a sliding slot 22 is formed in the square bolt 2, the rotating shift block 9 has a shift lever 91 capable of sliding along the sliding slot 22, wherein when the square bolt 2 completely extends out of one side of the housing 1, the shift lever 91 abuts against an inner wall of the sliding slot 22 and forms an included angle capable of preventing the square bolt 2 from retracting (illustratively, the included angle formed between the shift lever 91 and the sliding slot 22 is a right angle at this time).

In this embodiment, based on above-mentioned structural design, not only make square bolt 2 scalable in one side of casing 1, when square bolt 2 stretches out one side of casing 1 completely moreover, driving lever 91 can offset and form 90 dead angles with spout 22 with the inner wall of spout 22, so, can prevent that square bolt 2 from stretching out in the back is maliciously pried back casing 1 to can strengthen the pick-proof function of lock, further improve the security of lock.

Further, referring to fig. 2, 4 and 9, in an exemplary embodiment, the shift lever 91 is L-shaped, wherein one end of the shift lever 91 is disposed opposite the sliding slot 22 and extends toward the sliding slot 22 to form a sliding end 911, and the sliding end 911 extends into the sliding slot 22 and can slide along the sliding slot 22.

In the present embodiment, based on the above structural design, the shift lever 91 can drive the square bolt 2 to extend out of or retract into the housing 1 during the process of sliding back and forth along the sliding slot 22, and the structure is simple and smart.

Further, referring to fig. 2 and 4, in an exemplary embodiment, the unlocking movement block 8 has a third gear portion 81, and the rotating movement block 9 also has a fourth gear portion 92 connected with a shift lever 91 (illustratively, the shift lever 91 is connected with and integrated with the fourth gear portion 92), wherein the third gear portion 81 is meshed with the fourth gear portion 92. Illustratively, the third gear portion 81 is provided with a rectangular preformed hole 82 into which a key can be inserted, wherein in an actual application scenario, the rectangular preformed hole 82 faces to the outdoor side, into which the key can be inserted, so that a user can drive the square bolt 2 to extend or retract through the key outdoors to lock or unlock a door; the rectangular preformed hole 82 faces to the indoor side and can be matched with a hand button, so that a user can drive the square bolt 2 to extend or retract indoors through the hand button to lock or open the door.

In this embodiment, based on the above structural design, the transmission connection between the rotary shifting block 9 and the unlocking shifting block 8 is realized, so that when the key is used to rotate the unlocking shifting block 8, the rotary shifting block 9 can drive the shifting rod 91 to rotate synchronously, and further, when the shifting rod 91 rotates, the sliding end 911 of the shifting rod can slide back and forth along the sliding groove 22 to drive the square lock bolt 2 to extend out of or retract into the housing 1.

For understanding the utility model discloses a world lock with pick-proof function uses a comparatively specific embodiment to explain its theory of operation as an example below:

when the door is locked, the handle is lifted, referring to fig. 2, 4, 6, 7, 8 and 9, the handle drives the rotary connector 6 to rotate counterclockwise, the protrusion 62 pushes the first blocking portion 511 along with the rotation of the rotary connector 6, so as to drive the tooth piece 51 to rotate synchronously with the rotary connector 6, meanwhile, the tooth piece 51 drives the first gear portion 521 and the second gear portion 522 to rotate clockwise, the second gear portion 522 drives the first driving rod 3 to move upward, when the first driving rod 3 moves upward, the first driving rod 3 drives the counter gear 53 to rotate counterclockwise, so as to drive the second rack portion 42 to move downward, so that the first connector 32 can extend upward out of the housing 1, the second connector 41 can extend downward out of the housing 1, so that the lock head at the upper end of the top lever can be inserted into the lock hole of the door frame above, the lock head at the lower end of the bottom lever can be inserted into the lock hole of the door frame below to realize primary door locking, the groove 31 on the first driving lever 3 reaches the edge of the square bolt 2 and is opposite to the longitudinal limit part 5a1 of the plug 5a, as shown in fig. 5; and since the lateral extension 5a2 is supported by the inclined portion 211, the elastic member 5b is in a compressed state at this time), then, the handle is released, the rotating connector 6 is reset together with the handle under the action of the reset spring 71 (wherein, during the resetting of the rotating connector 6, the relative rotation between the tooth piece 51 and the rotating connector 6 occurs, i.e. the tooth piece 51 is in a stationary state and does not rotate synchronously with the rotating connector 6, and after the resetting of the rotating connector 6 is completed, the protrusion 62 contacts with the second stopper 512), then, the unlocking dial 8 can be rotated by using the key, the unlocking dial 8 drives the rotating dial 9 to rotate, during the rotation of the rotating dial 9, the dial 91 slides from the end of the sliding groove 22 far from the unlocking dial 8 to the other end of the sliding groove 22 near the unlocking dial 8, during the sliding of the dial 91 along the sliding groove 22, the deflector rod 91 pushes and presses the inner wall of one side of the sliding groove 22, so that the square bolt 2 extends out of one side of the shell 1 to realize secondary door locking, at the moment, the deflector rod 91 abuts against the inner wall of the sliding groove 22 and forms a 90-degree dead angle with the sliding groove 22, so that the opposite side bolt 2 is pushed, meanwhile, in the process that the square bolt 2 extends out of one side of the shell 1, the transverse extending part 5a2 gradually gets rid of the limitation of the inclined part 211, and under the pushing of the elastic restoring force of the elastic piece 5b, the longitudinal limiting part 5a1 of the plug 5a is inserted into the groove 31 of the first driving rod 3 to clamp the first driving rod 3 (at the moment, the transverse extending part 5a2 is in contact with the plane part 212), so that the first driving rod 3 cannot be sprung up and down, and the second driving rod 4 synchronously linked with the first driving rod 3 cannot be sprung up and down, thereby preventing;

when the door is opened, referring to fig. 2 to 9, the key can be used to rotate the unlocking dial block 8, the unlocking dial block 8 drives the rotating dial block 9 to rotate, in the process of rotating the rotating dial block 9, the shift lever 91 slides from one end of the sliding chute 22 close to the unlocking dial block 8 to the other end of the sliding chute 22 far away from the unlocking dial block 8, in the process of sliding the shift lever 91 along the sliding chute 22, the shift lever 91 pushes and presses the inner wall of the other side of the sliding chute 22, so that the square bolt 2 retracts into one side of the housing 1 to realize the primary unlocking of the door, wherein in the process of retracting the square bolt 2 into one side of the housing 1, the inclined part 211 is in contact with the transverse extending part 5a2 and pushes the transverse extending part 5a2, so that the elastic piece 5b is compressed, and meanwhile, the longitudinal limiting part 5a1 of the plug 5a retracts from the groove 31 of the; then, referring to fig. 2, 4, 6, 7, 8 and 9, the handle drives the rotary connector 6 to rotate clockwise (at this time, the return spring 71 and the auxiliary spring 72 both elastically deform), and as the rotary connector 6 rotates, the protrusion 62 pushes the second blocking portion 512, so as to drive the tooth piece 51 to rotate synchronously with the rotary connector 6, and at the same time, the tooth piece 51 drives the first gear portion 521 and the second gear portion 522 to rotate counterclockwise, and the second gear portion 522 drives the first driving rod 3 to move downward, and when the first driving rod 3 moves downward, the first driving rod 3 drives the counter gear 53 to rotate clockwise, so as to drive the second rack portion 42 to move upward, so that the first connector 32 can retract downward into the housing 1, and the second connector 41 can retract upward into the housing 1, so that the lock head at the upper end of the top post can exit the lock hole of the upper door frame, The tapered end of ground pole lower extreme can withdraw from in the lockhole of below door frame and realize the secondary unblock to the door, afterwards, unclamp the handle, under the combined action of reset spring 71 and auxiliary spring 72, rotate connector 6 and reset together with the handle.

It should be noted that other contents of the top-bottom door lock with anti-prying function disclosed in the present invention can be referred to in the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims (10)

1. A kind of world door lock with pick-proof function, including the body, extendible square lock tongue in one side of said body, can connect with the sky pole and connect into an organic whole and can be flexible up and down the first actuating lever and can connect into an organic whole and can flexible up and down the second actuating lever with the ground pole in the said body, and the said first actuating lever is adjacent to the said square lock tongue and set up, characterized by that, still install the movable plug-in unit linking with said square lock tongue in the said body, offer the recess that can supply one end of the said movable plug-in unit to stretch into on the said first actuating lever, wherein, when the said square lock tongue retracts in one side of the said body and opens the door, the said square lock tongue drives the said movable plug-in unit to withdraw from the said recess; when the square bolt, the first driving rod and the second driving rod are used for locking the door, the movable plug-in unit resets and is inserted into the groove.

2. The anti-picking top-bottom door lock according to claim 1, wherein the edge of the square bolt near the movable plug-in is provided with an open slot and forms an inclined part and a plane part which are mutually connected; the movable plug-in comprises a plug and an elastic piece, the plug and the elastic piece are arranged in the direction perpendicular to the telescopic direction of the square lock tongue, the plug is provided with a transverse extending part and a longitudinal limiting part which are arranged in a mutually perpendicular mode, and one end, connected with the transverse extending part, of the longitudinal limiting part is connected with the inner wall of the shell through the elastic piece; after the square lock tongue, the first driving rod and the second driving rod are used for locking the door, the transverse extending part is in contact with the plane part, and the other end, far away from the elastic piece, of the longitudinal limiting part is inserted into the groove; when the square bolt retracts into one side of the shell to open the door, the inclined part pushes the plug to move along the direction far away from the first driving rod, so that the longitudinal limiting part withdraws from the groove.

3. The top-bottom door lock with pick-proof function according to claim 1, wherein a synchronous linkage mechanism and a rotary connector linked with a handle are further installed in the housing, the synchronous linkage mechanism comprises a toothed sheet, a compound gear and a reverse gear, one end of the first driving rod close to the rotary connector is provided with a first rack portion, and one end of the second driving rod close to the rotary connector is provided with a second rack portion; the tooth piece is meshed with the first rack part through the compound gear, the first rack part is meshed with the second rack part through the reverse gear, the tooth piece is arranged on the rotating connector, and the tooth piece can rotate synchronously along with the rotating connector in the process of opening/locking the door by utilizing the handle.

4. The top-bottom door lock with pick-proof function according to claim 3, wherein the tooth piece is sleeved on the rotary connector, the tooth piece is provided with a notch and forms a first blocking portion and a second blocking portion, the rotary connector is provided with a protrusion, the protrusion is located in the notch between the first blocking portion and the second blocking portion, wherein when the handle is used for locking the door, the protrusion is abutted against the first blocking portion; when the handle is utilized to open the door, the bulge is abutted to the second blocking part.

5. The top-bottom door lock with anti-picking function according to claim 3, wherein said composite gear comprises a first gear portion and a second gear portion coaxially disposed with said first gear portion, wherein said first gear portion is engaged with said rack plate, and said second gear portion is engaged with said first rack portion.

6. The top-bottom door lock with anti-prying function according to claim 3, wherein a return spring is further installed in the housing, and the return spring is used for returning the handle after the handle completes the door opening/locking action.

7. A top and bottom door lock with pick-proof function according to claim 3, wherein an auxiliary spring is further installed in the housing, and a flange portion extending in a direction away from the rotation axis of the rotary connector is provided on the edge of the rotary connector, wherein the flange portion abuts against one end of the auxiliary spring on a rotation path of the handle during the door opening operation and after the handle is returned.

8. The top-bottom door lock with the anti-prying function according to any one of claims 1 to 7, wherein an unlocking shifting block which can be driven by a key and a rotating shifting block which is used for driving the square lock bolt to stretch are further installed in the shell, the rotating shifting block is in transmission connection with the unlocking shifting block, a sliding groove is formed in the square lock bolt, the rotating shifting block is provided with a shifting rod which can slide along the sliding groove, and when the square lock bolt completely extends out of one side of the shell, the shifting rod abuts against the inner wall of the sliding groove and forms an included angle which can prevent the square lock bolt from retracting.

9. The anti-pry top-bottom door lock according to claim 8, wherein said toggle lever is "L" shaped, wherein one end of said toggle lever is disposed opposite said sliding slot and extends toward said sliding slot to form a sliding end, said sliding end extending into and slidable along said sliding slot.

10. The top-bottom door lock with anti-picking function according to claim 8, wherein said unlocking moving block has a third gear portion, and said rotating moving block further has a fourth gear portion connected to said moving lever, wherein said third gear portion is engaged with said fourth gear portion.

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