CN112324249A

CN112324249A - Lock bolt structure of anti-theft door lock and operation method thereof

Info

Publication number: CN112324249A
Application number: CN202011293109.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-02-05

Abstract

The invention discloses a lock bolt structure of an anti-theft door lock and an operation method thereof. According to the invention, the fixed block is fixedly connected to one end of the bottom surface of the inner side wall of the lock box, the surfaces, far away from the inner side wall of the lock box, of the fixed block are fixedly connected with the U-shaped rods which are symmetrical to each other, the sliding grooves are formed in the U-shaped rods, the sliding rods which are symmetrical to each other penetrate through the sliding grooves, the other ends of the two sliding rods penetrate through the sliding grooves and are fixedly connected with the connecting plate, one end, far away from the sliding rods, of the connecting plate is fixedly connected with the second connecting block, and the surface, far away from the inner side wall of the lock box, of the second connecting block is fixedly connected with the lock head, so that the first gear can drive.

Description

Lock bolt structure of anti-theft door lock and operation method thereof

Technical Field

The invention relates to the field of anti-theft lock structures, in particular to an anti-theft door lock bolt structure and an operation method thereof.

Background

The anti-theft lock is an important device which can not be detached by people and is almost used every day, and based on the reasons of practicality, low price, convenience, durability and the like, the mechanical anti-theft lock always occupies the absolute market, although the safety of the mechanical anti-theft lock is still very weak after the technical improvement of one generation and another, the most common spring lock is taken as an example to explain the major problems in the prior art, and the analysis is always used for analyzing the reasons of the problems which cannot be solved radically.

The spring lock utilizes the shape of different lengths or concave-convex on the key to extrude the springs in the lock core to enable the springs to completely reach the proper position, the lock core is not prevented from rotating any more to realize unlocking, after the key is pulled out, the springs rebound to the original position by the spring to prevent the lock core from rotating again to realize locking, the lock structure adopting the opening and closing mode establishes that the key cannot be pulled out at the moment of opening, and the key and the springs are in tight contact, the contact creates the congenital stealing-opening condition for an unlocking tool, so that the spring lock has the opportunity of experimentally moving the springs to simulate correct key information to open the lock, so that the lock in the prior art is called as a contact lock, the lock core and the key structure of the contact lock are innovated or upgraded to a complex degree, but only the difficulty of simulation can be increased to prolong the stealing-opening time, but the problem that the lock cannot be stolen fundamentally put an end to an end, in practical application, each new technical product of the contact lock appears on the market for more than three months, and a special theft-opening method and a special theft-opening tool appear after disassembly research, and the theft-opening tool with intelligent detection appears now, so that the breaking speed is faster.

Disclosure of Invention

The invention aims to provide a lock bolt structure of a security door lock and an operation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a lock bolt structure of an anti-theft door lock comprises a lock box inner side wall, a lock catch box and a key, wherein a lifting groove is formed in one side of the lock box inner side wall, a lifting rod is arranged inside the lifting groove, one side, far away from the bottom of the lifting groove, of the lifting rod is fixedly connected with a lifting plate, one side of the lifting plate is movably attached to one side of the lock box inner side wall, first clamping teeth are arranged on the other side of the lifting plate, one side of the upper end of the lifting plate is fixedly connected with connecting rods, and one ends, far away from the lifting plate, of the two connecting rods are fixedly connected with;

a first lantern ring, a first fixing plate, a third fixing plate and a second fixing plate which are symmetrical to each other are fixedly arranged on one side, provided with a lifting groove, of the inner side wall of the lock box, a lock spring penetrates through the first lantern ring, and a lock hole is formed in one end of the lock spring;

a lever is rotatably arranged at one end, away from the inner side wall of the lock box, of the first fixing plate, a gear sedimentation piece is fixedly connected to one end, away from the inner side wall of the lock box, of each of the two second fixing plates, a sedimentation tank is arranged inside the gear sedimentation piece, a cross rod is arranged inside the sedimentation tank, a midpoint spherical piece is arranged in the middle of the cross rod, second lantern rings which are mutually symmetrical relative to the midpoint spherical piece are sleeved outside the cross rod, a sedimentation rod is fixedly connected to the bottom end of each second lantern ring, a spring is sleeved outside the upper end of each sedimentation rod, a compression block is fixedly connected to the bottom end, penetrating through the bottom surface of the sedimentation tank, of each sedimentation rod, and a second gear tank bottom is fixedly connected to one;

the fixed inserted bar setting element that is equipped with in top surface middle part of gear subsides piece, the constant head tank has been seted up to the inside of inserted bar setting element, the inside slip of constant head tank is equipped with the balancing piece, the bottom surface middle part fixedly connected with inserted bar of balancing piece, the bottom of inserted bar runs through the tank bottom of constant head tank and the top of top surface embedding of subsider in the spherical piece of mid point in proper order, the top embedding of inserted bar setting element has lever connector, lever connector's top is rotated with the one end of lever and is connected. (ii) a

One end of the third fixing plate, which is far away from the inner side wall of the lock box, is fixedly connected with a rotating shaft, and the third fixing plate is rotatably provided with a first gear through the rotating shaft;

the bottom surface one end fixedly connected with fixed block of lock box inside wall, the U-shaped pole of the mutual symmetry of one side fixedly connected with of lock box inside wall is kept away from to the fixed block, the spout has been seted up to the inside of U-shaped pole, the inside of spout runs through the slide bar that is equipped with mutual symmetry, two the first connecting block of one end fixedly connected with of slide bar, the top surface of first connecting block is equipped with the second latch, two the other end of slide bar runs through spout fixedly connected with connecting plate, the one end fixedly connected with second connecting block of slide bar is kept away from to the connecting plate, the one side fixedly connected with tapered end of lock box inside wall is kept away from to the.

Preferably, the lock catch box is positioned on one side of the lock head far away from the inner side wall of the lock box, and a lock groove matched with the lock head is formed in one side of the lock catch box close to the lock head.

Preferably, the outer side of one end of the lock spring, which is far away from the lock hole, is fixedly provided with a latch which is meshed with the second gear.

Preferably, the first gear is meshed with a second gear, and the second gear is meshed with a second latch.

Preferably, the linear distance between the pin shaft in the lever and the lever connecting piece is smaller than the linear distance between the pin shaft in the lever and the tilting piece.

Preferably, the balancing block is of a disc-shaped structure, and the outer side of the balancing block is movably attached to the inner side wall of the positioning groove.

Preferably, the key is divided into a locking piece end and a twisting piece end, and the width of the twisting piece end is three times that of the locking piece end.

Preferably, the bottom end of the lever connecting piece penetrates through the groove top of the positioning groove and is fixedly connected with the top surface of the balance block.

A method for operating a lock bolt of a security door lock comprises the following steps:

s1, inserting the end of a key lock sheet into a lock hole, supporting a marble in a lock spring by a bulge at the end of the lock sheet, rotating a twisting end of a key, driving the lock spring to rotate by the key, engaging a latch outside the lock spring with a first latch, driving a lifting plate to move towards the top end of the inner side wall of a lock box by the rotation of the lock spring, driving a tilting piece to move towards the top end of the inner side wall of the lock box by the lifting plate through a connecting rod, positioning one end of a lever, far away from a lever connecting piece, right above the tilting piece, and pressing the lever connecting piece downwards by the tilting piece through the lever;

s2, pressing down the lever connecting piece to apply a vertical downward pressure on the balance block, and applying a vertical downward force on the central point spherical piece by the balance block through the inserted rod;

s3, the midpoint spherical piece receives a vertical downward force from the inserted link to drive the cross rod to move towards the bottom surface of the settling tank, the cross rod drives the second gear to move towards the first gear, when the spring is compressed to the shortest length, the second gear is just meshed with the first gear, when the second gear is meshed with the first gear, the second gear is just meshed with the latch arranged on the outer side of the lock spring, the key is continuously rotated, and the key drives the first gear to rotate through the second gear;

s4, the first gear drives the first connecting block with the bottom end provided with the second clamping tooth meshed with the first connecting block to move in the horizontal direction;

s5, the first connecting block drives the connecting plate to move in the horizontal direction through the sliding rod, the connecting plate drives the second connecting block and the lock head to move towards the direction close to the lock catch box to lock the anti-theft lock, the connecting plate drives the second connecting block and the lock head to move towards the direction far away from the lock catch box to unlock the anti-theft lock, and the key can be pulled out after the anti-theft lock is locked.

The invention has the technical effects and advantages that:

1. according to the invention, the fixed block is fixedly connected to one end of the bottom surface of the inner side wall of the lock box, the surfaces, far away from the inner side wall of the lock box, of the fixed block are fixedly connected with the U-shaped rods which are symmetrical to each other, the sliding grooves are formed in the U-shaped rods, the sliding rods which are symmetrical to each other penetrate through the sliding grooves, the other ends of the two sliding rods penetrate through the sliding grooves and are fixedly connected with the connecting plate, one end, far away from the sliding rods, of the connecting plate is fixedly connected with the second connecting block, and the surface, far away from the inner side wall of the lock box, of the second connecting block is fixedly connected with the lock head, so that the first gear can drive;

2. according to the invention, the connecting rods are fixedly connected to one side of the upper end of the lifting plate, and the tilting parts are fixedly connected to the ends of the two connecting rods, which are far away from the lifting plate, so that the lever connecting piece can drive the cross rod to move towards the bottom of the settling tank by applying pressure to the balance block, and the second gear is meshed with the first gear.

Drawings

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

Fig. 2 is a partial sectional structural schematic view of the present invention.

FIG. 3 is an enlarged view of the position A in FIG. 2 according to the present invention.

Fig. 4 is an enlarged structural diagram of the position B in fig. 2 according to the present invention.

Fig. 5 is an enlarged view of the position C in fig. 2 according to the present invention.

Fig. 6 is an enlarged view of the position D in fig. 2 according to the present invention.

In the figure: 1. the inner side wall of the lock box; 11. a lifting groove; 111. a lifting rod; 112. a lifting plate; 1121. a first latch; 1122. a connecting rod; 1123. a tilting member; 12. a first collar; 121. a locking spring; 1211. a lock hole; 13. a first fixing plate; 131. a lever; 14. a second fixing plate; 15. a third fixing plate; 151. a rotating shaft; 152. a first gear; 16. a fixed block; 161. a U-shaped rod; 1611. a chute; 16111. a slide bar; 16112. a first connection block; 161121, a second latch; 2. a gear setting member; 21. a settling tank; 211. A cross bar; 2111. a midpoint ball; 2112. a second collar; 2113. a settling rod; 21131. a spring; 21132. a compression block; 2114. a second gear; 3. a plunger positioning member; 31. positioning a groove; 311. a counterbalance; 312. inserting a rod; 313. a lever connector; 4. a connecting plate; 41. a second connecting block; 42. a lock head; 5. a lock box; 6. a key.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a lock bolt structure of a security door lock as shown in figures 1-6 and an operation method thereof, comprising a lock box inner side wall 1, a lock catch box 5 and a key 6, wherein one side of the lock box inner side wall 1 is provided with a lifting groove 11, a lifting rod 111 is arranged inside the lifting groove 11, one side of the lifting rod 111 far away from the bottom of the lifting groove 11 is fixedly connected with a lifting plate 112, one side of the lifting plate 112 is movably attached to one side of the lock box inner side wall 1, the other side of the lifting plate 112 is provided with a first latch 1121, one side of the upper end of the lifting plate 112 is fixedly connected with a connecting rod 1122, one ends of the two connecting rods 1122 far away from the lifting plate 112 are fixedly connected with a tilting piece 1123, the lock plate end of the key 6 is inserted into a lock hole 1211, a bulge at the lock plate end supports a marble inside a lock spring 121, a twisting end of the key 6 is rotated, the key 6 drives the lock spring, the lock spring 121 rotates to drive the lifting plate 112 to move towards the top end of the inner side wall 1 of the lock box, the lifting plate 112 drives the tilting piece 1123 to move towards the top end of the inner side wall 1 of the lock box through the connecting rod 1122, one end, far away from the lever connecting piece 313, of the lever 131 is located right above the tilting piece 1123, and the tilting piece 1123 presses the lever connecting piece 313 downwards through the lever 131;

a first lantern ring 12, a first fixing plate 13, a third fixing plate 15 and a second fixing plate 14 which are symmetrical to each other are fixedly arranged on one side, provided with a lifting groove 11, of the inner side wall 1 of the lock box, a lock spring 121 penetrates through the inside of the first lantern ring 12, one end of the lock spring 121 is provided with a lock hole 1211, and the outer side of the lock spring 121 is movably attached to the outer side of the first lantern ring 12;

a lever 131 is rotatably arranged at one end of the first fixing plate 13, which is far away from the inner side wall 1 of the lock box, through a pin shaft, one ends of the two second fixing plates 14, which are far away from the inner side wall 1 of the lock box, are fixedly connected with a gear sedimentation member 2, a sedimentation groove 21 is formed in the gear sedimentation member 2, a cross rod 211 is arranged in the sedimentation groove 21, a midpoint spherical member 2111 is arranged in the middle of the cross rod 211, a second sleeve 2112 which is mutually symmetrical with respect to the midpoint spherical member 2111 is sleeved on the outer side of the cross rod 211, a sedimentation rod 2113 is fixedly connected at the bottom end of the second sleeve 2112, a spring 21131 is sleeved on the outer side of the upper end of the sedimentation rod 2113, a pressing block 21132 is fixedly connected at the bottom surface of the sedimentation groove 21, a second gear 2114 is fixedly connected at one end of the cross rod 211, which is far away from the bottom of the sedimentation groove 21, the midpoint spherical member 2111 is driven to move towards the bottom surface, when the spring 21131 is compressed to the shortest length, the second gear 2114 is just meshed with the first gear 152, and when the second gear 2114 is meshed with the first gear 152, the second gear 2114 is just meshed with the latch arranged on the outer side of the lock spring 121, and the key 6 is continuously rotated, so that the key 6 drives the first gear 152 to rotate through the second gear 2114;

an inserted bar positioning piece 3 is fixedly arranged in the middle of the top surface of the gear sedimentation piece 2, a positioning groove 31 is formed in the inserted bar positioning piece 3, a balance block 311 is arranged in the positioning groove 31 in a sliding mode, an inserted bar 312 is fixedly connected to the middle of the bottom surface of the balance block 311, the bottom end of the inserted bar 312 sequentially penetrates through the groove bottom of the positioning groove 31 and the top surface of the sedimentation groove 21 and is embedded into the top end of the midpoint spherical piece 2111, a lever connecting piece 313 is embedded into the top end of the inserted bar positioning piece 3, the top end of the lever connecting piece 313 is rotatably connected with one end of a lever 131, the lever connecting piece 313 presses downwards to apply vertical downward pressure to the balance block 311, and the balance block 311 applies vertical downward;

one end of the third fixing plate 15, which is far away from the inner side wall 1 of the lock box, is fixedly connected with a rotating shaft 151, the third fixing plate 15 is rotatably provided with a first gear 152 through the rotating shaft 151, and the first gear 152 drives a first connecting block 16112, the bottom end of which is provided with a second latch 161121 engaged with the first connecting block, to move in the horizontal direction;

one end of the bottom surface of the inner side wall 1 of the lock box is fixedly connected with a fixed block 16, one surface of the fixed block 16, which is far away from the inner side wall 1 of the lock box, is fixedly connected with mutually symmetrical U-shaped rods 161, a sliding groove 1611 is formed inside the U-shaped rod 161, mutually symmetrical sliding rods 16111 are arranged inside the sliding groove 1611 in a penetrating manner, one ends of the two sliding rods 16111 are fixedly connected with a first connecting block 16112, the top surface of the first connecting block 16112 is provided with a second latch 161121, the other ends of the two sliding rods 16111 are fixedly connected with a connecting plate 4 through the sliding groove 1611, one end of the connecting plate 4, which is far away from the sliding rod 16111, is fixedly connected with a second connecting block 41, one surface of the second connecting block 41, which is far away from the inner side wall 1 of the lock box, is fixedly connected with a lock head 42, the first connecting block 16112 drives the connecting plate 4, when the connecting plate 4 drives the second connecting block 41 and the lock head 42 to move away from the lock catch box 5, the anti-theft lock is unlocked, and the key 6 can be pulled out after the anti-theft lock is locked, so that the anti-theft lock with the structure has a good anti-theft function.

The lock catch box 5 is positioned at one side of the lock head 42 far away from the lock box inner side wall 1, and one side of the lock catch box 5 close to the lock head 42 is provided with a lock groove matched with the lock head 42, so that the lock head 42 can be inserted into the lock groove formed at one side of the lock catch box 5 close to the lock head 42.

The outer side of one end of the lock spring 121 far from the lock hole 1211 is fixedly provided with a latch engaged with the second gear 2114, the latch arranged on the outer side of the lock spring 121 drives the lifting plate 112 to lift, and then the latch arranged on the outer side of the lock spring 121 drives the second gear 2114 to rotate, and the first gear 152 and the second gear 2114 are linked with each other, so that the first gear 152 can drive the first connecting block 16112 to move in the horizontal direction.

The first gear 152 is engaged with the second gear 2114, and the second gear 2114 is engaged with the second latch 161121, and the structure of the antitheft lock will be further described.

The linear distance from the pin shaft in the lever 131 to the lever connecting piece 313 is smaller than the linear distance from the pin shaft in the lever 131 to the tilting piece 1123, so that the tilting piece 1123 can drive the lever connecting piece 313 to move towards the bottom of the positioning groove 31 with a small force.

The balance weight 311 is a disc-shaped structure, and the outer side of the balance weight 311 is movably attached to the inner side wall of the positioning groove 31, so that the inserted rod 312 keeps a vertical state when moving towards the midpoint spherical part 2111.

The key 6 is divided into a locking piece end and a twisting piece end, and the width of the twisting piece end is three times of that of the locking piece end, so that the key 6 is more labor-saving when being twisted.

The bottom end of the lever connector 313 penetrates through the groove top of the positioning groove 31 to be fixedly connected with the top surface of the balance weight 311, so that one end of the lever 131, which is far away from the lever connector 313, is tilted, and the lever connector 313 can be driven to move towards the groove bottom of the positioning groove 31.

s5, the first connecting block drives the connecting plate to move in the horizontal direction through the sliding rod, the connecting plate drives the second connecting block and the lock head to move towards the direction close to the lock catch box, the anti-theft lock is locked, the connecting plate drives the second connecting block and the lock head to move towards the direction far away from the lock catch box, the anti-theft lock is unlocked, and the key can be pulled out after the anti-theft lock is locked, so that the anti-theft lock with the structure has a good anti-theft function.

The working principle of the invention is as follows: inserting the end of a lock plate of a key 6 into the lock hole 1211, supporting a marble in the lock spring 121 by a protrusion at the end of the lock plate, rotating a twisting end of the key 6, driving the lock spring 121 to rotate by the key 6, engaging a latch outside the lock spring 121 with a first latch 1121, driving the lifting plate 112 to move towards the top end of the inner side wall 1 of the lock box by the rotation of the lock spring 121, driving the tilting piece 1123 to move towards the top end of the inner side wall 1 of the lock box by the lifting plate 112 through the connecting rod 1122, positioning one end of the lever 131, which is far away from the lever connecting piece 313, right above the tilting piece 1123, and pressing down the lever connecting piece 313 through the lever 131 by the tilting piece;

the lever connecting piece 313 presses down to apply a vertical downward pressure on the balance weight 311, and the balance weight 311 applies a vertical downward force on the central point spherical part 2111 through the inserting rod 312;

the midpoint spherical part 2111 is subjected to a vertical downward force from the inserted bar 312 to drive the cross bar 211 to move towards the bottom surface of the settling tank 21, the cross bar 211 drives the second gear 2114 to move towards the first gear 152, when the spring 21131 is compressed to the shortest length, the second gear 2114 is just meshed with the first gear 152, when the second gear 2114 is meshed with the first gear 152, the second gear 2114 is just meshed with the latch arranged outside the locking spring 121, the key 6 is continuously rotated, and the key 6 drives the first gear 152 to rotate through the second gear 2114;

the first gear 152 drives the first connecting block 16112, the bottom end of which is provided with a second latch 161121 engaged with the first connecting block, to move in the horizontal direction;

the first connecting block 16112 drives the connecting plate 4 to move horizontally through the sliding rod 16111, the connecting plate 4 drives the second connecting block 41 and the lock head 42 to move in a direction close to the keeper 5, the anti-theft lock is locked, the connecting plate 4 drives the second connecting block 41 and the lock head 42 to move in a direction away from the keeper 5, the anti-theft lock is unlocked, and the key 6 can be pulled out after the anti-theft lock is locked.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a security door lock set bar structure, includes lock box inside wall (1), hasp box (5) and key (6), its characterized in that: one side of the inner side wall (1) of the lock box is provided with a lifting groove (11), a lifting rod (111) is arranged inside the lifting groove (11), one side, far away from the bottom of the lifting groove (11), of the lifting rod (111) is fixedly connected with a lifting plate (112), one side of the lifting plate (112) is movably attached to one side of the inner side wall (1) of the lock box, the other side of the lifting plate (112) is provided with a first clamping tooth (1121), one side of the upper end of the lifting plate (112) is fixedly connected with a connecting rod (1122), and one ends, far away from the lifting plate (112), of the two connecting rods (1122) are fixedly connected with a tilting piece (1123);

a first lantern ring (12), a first fixing plate (13), a third fixing plate (15) and a second fixing plate (14) which are symmetrical to each other are fixedly arranged on one side, provided with a lifting groove (11), of the inner side wall (1) of the lock box, a lock spring (121) penetrates through the inside of the first lantern ring (12), and one end of the lock spring (121) is provided with a lock hole (1211);

a lever (131) is rotatably arranged at one end, far away from the inner side wall (1) of the lock box, of the first fixing plate (13) through a pin shaft, a gear sedimentation piece (2) is fixedly connected at one end, far away from the inner side wall (1) of the lock box, of the two second fixing plates (14), a sedimentation tank (21) is arranged inside the gear sedimentation piece (2), a cross rod (211) is arranged inside the sedimentation tank (21), a midpoint spherical piece (2111) is arranged in the middle of the cross rod (211), second lantern rings (2112) which are mutually symmetrical with respect to the midpoint spherical piece (2111) are sleeved outside the cross rod (211), a sedimentation rod (2113) is fixedly connected at the bottom end of the second lantern ring (2112), a spring (21131) is sleeved outside the upper end of the sedimentation rod (2113), a pressing block (21132) is fixedly connected at the bottom end, far away from the bottom of the sedimentation tank (21), of the cross rod (211), and a second gear (2114) is fixedly connected;

an inserted bar positioning piece (3) is fixedly arranged in the middle of the top surface of the gear sedimentation piece (2), a positioning groove (31) is formed in the inserted bar positioning piece (3), a balance block (311) is slidably arranged in the positioning groove (31), an inserted bar (312) is fixedly connected to the middle of the bottom surface of the balance block (311), the bottom end of the inserted bar (312) sequentially penetrates through the bottom of the positioning groove (31) and the top surface of the sedimentation groove (21) and is embedded into the top end of the midpoint spherical piece (2111), a lever connecting piece (313) is embedded into the top end of the inserted bar positioning piece (3), and the top end of the lever connecting piece (313) is rotatably connected with one end of a lever (131);

one end, far away from the inner side wall (1) of the lock box, of the third fixing plate (15) is fixedly connected with a rotating shaft (151), and the third fixing plate (15) is rotatably provided with a first gear (152) through the rotating shaft (151);

one end of the bottom surface of the inner side wall (1) of the lock box is fixedly connected with a fixed block (16), one surface of the fixed block (16) far away from the inner side wall (1) of the lock box is fixedly connected with U-shaped rods (161) which are symmetrical with each other, a sliding groove (1611) is formed in the U-shaped rod (161), symmetrical sliding rods (16111) penetrate through the sliding groove (1611), one end of each of the two sliding rods (16111) is fixedly connected with a first connecting block (16112), the top surface of the first connecting block (16112) is provided with a second latch (161121), the other ends of the two sliding rods (16111) penetrate through the sliding groove (1611) and are fixedly connected with a connecting plate (4), one end of the connecting plate (4) far away from the sliding rod (16111) is fixedly connected with a second connecting block (41), one side of the second connecting block (41) far away from the inner side wall (1) of the lock box is fixedly connected with a lock head (42).

2. A security door lock bolt construction according to claim 1, wherein: the lock catch box (5) is positioned on one side of the lock head (42) far away from the inner side wall (1) of the lock box, and a lock groove matched with the lock head (42) is formed in one side of the lock catch box (5) close to the lock head (42).

3. A security door lock bolt construction according to claim 1, wherein: and a latch meshed with the second gear (2114) is fixedly arranged on the outer side of one end of the lock spring (121) far away from the lock hole (1211).

4. A security door lock bolt construction according to claim 1, wherein: the first gear (152) is meshed with a second gear (2114), and the second gear (2114) is meshed with a second latch (161121).

5. A security door lock bolt construction according to claim 1, wherein: the linear distance from the pin shaft in the lever (131) to the lever connecting piece (313) is smaller than the linear distance from the pin shaft in the lever (131) to the tilting piece (1123).

6. A security door lock bolt structure and its operation method according to claim 1, characterized in that: the balance block (311) is of a disc-shaped structure, and the outer side of the balance block (311) is movably attached to the inner side wall of the positioning groove (31).

7. A security door lock bolt construction according to claim 1, wherein: the key (6) is divided into a locking piece end and a twisting piece end, and the width of the twisting piece end is three times that of the locking piece end.

8. A security door lock bolt construction according to claim 1, wherein: the bottom end of the lever connecting piece (313) penetrates through the groove top of the positioning groove (31) and is fixedly connected with the top surface of the balance block (311).

9. A method for operating a lock bolt of a security door lock is characterized by comprising the following steps: