High-safety anti-theft door

Abstract

A high-safety anti-theft door comprises a door frame and a door body. Two inserting holes are formed in the inner side wall of the door frame. A middle cavity and two inner cavity sets are formed in the door body. The inner cavity set comprises a cavity, a sliding cavity and a mounting cavity. And a sliding hole is formed in the right side cavity wall of the mounting cavity. A sliding rod is slidably connected into the sliding cavity. A connector is fixed to the right end of the sliding rod. And a self-locking structure is arranged in the mounting cavity. The self-locking structure comprises an inserting rod, a sliding plate and two sets of connecting rod structures. The connecting rod structure comprises a first connecting rod, a second connecting rod and a third connecting rod. And a driving structure is arranged between the cavity and the sliding cavity. And linkage structures are arranged between the middle cavity and the two cavities. A knob is rotationally connected to the outer side wall of the front side of the door body. According to the anti-theft door, the inserting rod is inserted into the inserting hole, so that the door body and the door frame are further fixed, an illegal person cannot enter a room easily even if the lock is pried, and the safety anti-theft performance of the anti-theft door body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to anti-theft doors, in particular to a high-security anti-theft door. Background Art

[0002] Home anti-theft doors are used in large quantities to ensure the safety of our lives and property and enhance our sense of security. The realization of the real anti-theft function of anti-theft doors can avoid people’s property loss and personal safety hazards after property loss.

[0003] However, some existing anti-theft doors with keyholes are only locked by door locks when in use, and their safety performance is low. Criminals can easily open the door from the outside by prying and unlocking techniques, causing property losses to the householder and personal safety hazards.

[0004] For example, the utility model patent with the authorization announcement number CN219953148U discloses a fully enclosed steel anti-theft door, including a door frame, a door body is arranged inside the door frame, a handle is rotatably connected to one end of the middle of the two side end faces of the door body, a cat's eye is arranged in the middle of the upper end of one side end face of the door body, two through holes are arranged in the middle of one side end face of the door body near the lower end, and a telescopic cavity is arranged on one side of the inner side of the door body. In this utility model, a locking structure is added, when the user is in the house, by pressing the button, the button is pressed into the telescopic cavity, and then the pull rod is pulled to move the plug rod forward, so that the front end of the plug rod is inserted into the jack, at this time, the button is ejected from another through hole under the action of the first spring, and the plug rod is limited. Through this structural design, it is difficult for criminals to enter the house even if they pry the lock open, reducing the possibility of the owner's property being lost due to the door lock being pried, and improving the anti-theft performance of the anti-theft door.

[0005] At the same time, the utility model also proposes a technical solution to solve the problem of low safety performance when the anti-theft door is locked only by a door lock. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-security anti-theft door, which makes it difficult for criminals to enter the house even if they pry open the lock by inserting a rod into the socket, thereby reducing the possibility of the owner's property being lost due to the door lock being pried open, and improving the technical effect of safety performance.

[0007] A high-security anti-theft door comprises an anti-theft door body, wherein the anti-theft door body comprises a door frame and a door body, wherein the door body is located in the door frame, the door body and the left side of the door frame are hinged by a hinge, two insertion holes are arranged on the right inner wall of the door frame, an intermediate cavity and two groups of inner cavity groups are arranged inside the door body, the two groups of inner cavity groups are symmetrically arranged up and down and correspond to the two insertion holes respectively, the inner cavity groups comprise a cavity, a sliding cavity and an installation cavity from left to right, a sliding hole corresponding to the insertion hole is arranged on the right cavity wall of the installation cavity, the intermediate cavity is located between the two cavities, a sliding rod is slidably connected in the sliding cavity, the right end of the sliding rod penetrates into the installation cavity in a sliding connection manner and is fixed with a connector, a self-locking structure is arranged in the installation cavity, and the self-locking structure comprises an insertion rod, a sliding plate and two groups of A connecting rod structure, the slide plate slides left and right along the cavity wall of the installation cavity, the insertion rod is fixed to the right side of the slide plate, the right end of the insertion rod passes through the sliding hole and is inserted into the insertion hole, the two groups of the connecting rod structures are symmetrically arranged up and down, and each includes a first connecting rod, a second connecting rod and a third connecting rod, the left end of the first connecting rod is hinged to the left cavity wall of the installation cavity, the right end of the second connecting rod is hinged to the left wall of the slide plate, the right end of the first connecting rod and the left end of the second connecting rod are both hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the connecting head, a driving structure for driving the slide rod to move left and right is arranged between the cavity and the sliding cavity, a linkage structure for driving the driving structure is arranged between the middle cavity and the two cavities, and a knob for driving the linkage structure is rotatably connected to the front outer wall of the door body.

[0008] By adopting the above technical solution, when the door body is rotated to close, the sliding hole corresponds to the socket. Then the knob is turned to drive the linkage structure, the linkage structure drives the driving structure, and the driving structure drives the sliding rod to move to the right. The sliding rod drives the connector to move to the right. The connector drives the third connecting rod to rotate. The third connecting rod drives the first connecting rod and the second connecting rod to rotate. The second connecting rod drives the slide plate to move to the right along the cavity wall of the installation cavity. The slide plate drives the insertion rod to move to the right. The insertion rod passes through the sliding hole and is inserted into the socket. In this way, the door body and the door frame are further fixed, and it is difficult for criminals to enter the house even if they pry the lock open, thereby improving the safety and anti-theft performance of the anti-theft door body. Moreover, when the insertion rod is fully inserted into the socket, the angle between the first connecting rod and the second connecting rod is 180°. When a force is directly applied to the insertion rod to make it move to the left, the force cannot rotate the first connecting rod and the second connecting rod, and the insertion rod cannot move to the left and retract into the installation cavity and the sliding hole. That is, only by turning the knob inside the house can the rod be driven to move to the left and reset, and it is impossible to directly apply a leftward force to the rod to reset it, which improves the stability of the rod when inserted into the socket, thereby further improving the safety and anti-theft performance of the anti-theft door body.

[0009] The utility model is further configured as follows: two guide rods symmetrically arranged up and down are fixed between the left and right cavity walls of the installation cavity, and the upper and lower ends of the slide plate are respectively slidably sleeved on the outside of the two guide rods.

[0010] By adopting the above technical solution, the slide plate slides along the guide rod, thereby improving the stability of the slide plate when sliding.

[0011] The utility model is further configured as follows: an axle rod is rotatably connected between the front and rear side walls of the middle cavity via a bearing, the front end of the axle rod passes through the middle cavity and is fixedly connected to a knob, the driving structure includes a movable plate and a spring, the linkage structure includes a fixed pulley and a pull rope, the movable plate is fixedly sleeved on the outside of the sliding rod and slides left and right along the cavity wall of the sliding cavity, the spring is fixed between the left side wall of the movable plate and the left side wall of the sliding cavity, and is sleeved on the outside of the sliding rod, the fixed pulley is installed in the cavity, the left end of the sliding rod passes into the cavity in a sliding connection manner and is fixedly connected to the pull rope, and the other end of the pull rope passes around the fixed pulley and is fixedly connected to the axle rod.

[0012] By adopting the above technical solution, when it is necessary to pull the insertion rod out of the socket, turn the knob, and the knob drives the shaft to rotate. As the shaft rotates, the pull rope will be wrapped around the shaft. The pull rope pulls the slide rod, and the slide rod moves to the left. The slide rod drives the movable plate to move to the left along the cavity wall of the sliding cavity. The spring is compressed to form a rebound force to the right. The slide rod moves to the left and drives the connecting head to move to the left. The connecting head drives the slide plate to the left through the connecting rod structure. The slide plate drives the insertion rod to move to the left and retracts into the installation cavity and the sliding hole. Similarly, when it is necessary to insert the insertion rod into the socket, release the knob, and under the action of the rebound force of the spring, the movable plate, the slide rod and the insertion rod move to the right to reset, the shaft and the knob rotate to reset, and the pull rope unfolds from the shaft.

[0013] The utility model is further configured as follows: a bracket is fixed on the front outer side wall of the door body and is located directly above the knob; a limit plate is hinged on the bracket; a through hole is formed on the limit plate; a clamping rod for passing through the through hole is fixed at the front edge of the knob.

[0014] By adopting the above technical solution, when the knob is turned to pull the plug rod out of the jack, the position of the clamp rod corresponds to the through hole, and the limit plate is rotated downward so that the limit plate is sleeved on the outside of the clamp rod through the through hole, and the knob can be fixed by the limit plate. Similarly, when the limit plate is rotated upward, the limit plate no longer fixes the knob, and the knob automatically rotates and resets under the action of the rebound force of the spring, thereby driving the plug rod to be inserted into the jack.

[0015] The utility model is further configured as follows: the external fixing sleeve of the shaft rod is provided with a partition located in the middle cavity, the partition divides the shaft rod into two parts, front and rear parts, and the two pull ropes are respectively fixed on the front and rear parts of the shaft rod.

[0016] By adopting the above technical solution, the provision of the partition can prevent the two pull ropes from being entangled with each other.

[0017] The utility model is further configured as follows: a worm is rotatably connected between the front and rear cavity walls of the middle cavity through a bearing, the front end of the worm passes through the middle cavity and is fixedly connected to the knob, an intermediate rod is rotatably connected between the upper and lower cavity walls of the middle cavity, the outer fixed sleeve of the intermediate rod is provided with a worm wheel meshing with the worm, the left end of the sliding rod is provided with a threaded groove, the driving structure includes a screw rod and a driven gear, the linkage structure includes a rotating rod and a driving gear, the screw rod is rotatably connected between the cavity and the sliding cavity through a bearing, the left end of the screw rod passes into the cavity, the driven gear is fixedly sleeved on the outside of the left end of the screw rod and is located in the cavity, the sliding rod is sleeved on the outside of the screw rod in a threaded connection manner through the threaded groove, the rotating rod is rotatably connected between the cavity and the middle cavity through a bearing, one end of the rotating rod is fixedly connected to the intermediate rod, the other end of the rotating rod is located in the cavity and fixedly connected to the driving gear, and the driving gear meshes with the driven gear.

[0018] By adopting the above technical solution, the knob is turned, and the knob drives the worm to rotate. The worm drives the worm wheel to rotate. The worm wheel drives the intermediate rod to rotate. The intermediate rod drives the rotating rod to rotate. The rotating rod drives the driving gear to rotate. The driving gear drives the driven gear to rotate. The driven gear drives the screw to rotate. The screw drives the sliding rod to move to the right, so that the insertion rod is inserted into the socket. Similarly, the knob can be turned in the opposite direction to drive the insertion rod to be pulled out of the socket.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] A high-security anti-theft door. The utility model further fixes the door body and the door frame by inserting a plug rod into the insertion hole. Even if criminals pry open the lock, it is difficult for them to enter the house, thereby improving the safety and anti-theft performance of the anti-theft door body. Moreover, when the plug rod is fully inserted into the insertion hole, the angle between the first connecting rod and the second connecting rod is 180°. When a force is directly applied to the plug rod to make it turn left, the force cannot rotate the first connecting rod and the second connecting rod, and the plug rod cannot move to the left and retract into the installation cavity and the sliding hole. That is, only by turning the knob located in the house can the plug rod be driven to move to the left and reset, and it is impossible to directly apply a force to the left to reset the plug rod, which improves the stability of the plug rod when it is inserted into the insertion hole, thereby further improving the safety and anti-theft performance of the anti-theft door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of embodiment 1;

[0022] Figure 2 is a cross-sectional view of the main viewing direction of the first embodiment;

[0023] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 It is a partial cross-sectional view of the first embodiment in the side view direction;

[0025] Figure 5 It is a structural schematic diagram of the second embodiment;

[0026] Figure 6 is a cross-sectional view in the main viewing direction of the second embodiment;

[0027] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0028] Figure numerals: 1. door frame; 2. door body; 3. insertion hole; 4. middle cavity; 5. cavity; 6. sliding cavity; 7. installation cavity; 8. sliding hole; 9. sliding rod; 10. connecting head; 11. insertion rod; 12. slide plate; 13. guide rod; 14. first connecting rod; 15. second connecting rod; 16. third connecting rod; 17. knob; 18. shaft rod; 19. movable plate; 20. spring; 21. fixed pulley; 22. pull rope; 23. bracket; 24. limit plate; 25. through hole; 26. clamping rod; 27. partition; 28. worm; 29. ​​middle rod; 30. worm wheel; 31. threaded groove; 32. screw rod; 33. driven gear; 34. rotating rod; 35. driving gear. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] A high security anti-theft door, such as Figure 1-Figure 4 As shown, the anti-theft door body includes a door frame 1 and a door body 2. The door body 2 is located in the door frame 1. The door body 2 and the left side of the door frame 1 are hinged by a hinge.

[0032] Two insertion holes 3 are provided on the right inner wall of the door frame 1 .

[0033] The door body 2 is provided with a middle cavity 4 and two groups of inner cavity groups. The two groups of inner cavity groups are symmetrically arranged up and down and correspond to two jacks 3 respectively. The inner cavity groups include a cavity 5, a sliding cavity 6 and a mounting cavity 7 from left to right. A sliding hole 8 corresponding to the jack 3 is provided on the right wall of the mounting cavity 7. The middle cavity 4 is located between the two cavities 5.

[0034] A slide rod 9 is slidably connected in the slide cavity 6. The right end of the slide rod 9 penetrates into the installation cavity 7 in a sliding connection manner and is fixed with a connector 10.

[0035] A self-locking structure is provided in the installation cavity 7. The self-locking structure includes an insert rod 11, a slide plate 12, two groups of connecting rod structures and two guide rods 13. The two guide rods 13 are fixedly connected between the left and right cavity walls of the installation cavity 7, and the guide rods 13 are symmetrically arranged up and down. The slide plate 12 slides left and right along the cavity wall of the installation cavity 7, and its upper and lower ends are respectively slidably sleeved on the outside of the two guide rods 13. The insert rod 11 is fixed to the right side of the slide plate 12. The right end of the insert rod 11 passes through the sliding hole 8 and is inserted into the socket 3. The two groups of connecting rod structures are symmetrically arranged up and down, and each includes a first connecting rod 14, a second connecting rod 15 and a third connecting rod 16. The left end of the first connecting rod 14 is hinged to the left cavity wall of the installation cavity 7. The right end of the second connecting rod 15 is hinged to the left wall of the slide plate 12. The right end of the first connecting rod 14 and the left end of the second connecting rod 15 are both hinged to one end of the third connecting rod 16. The other end of the third connecting rod 16 is hinged to the connector 10.

[0036] A driving structure for driving the slide bar 9 to move left and right is provided between the cavity 5 and the slide cavity 6. A linkage structure for driving the driving structure is provided between the middle cavity 4 and the two cavities 5. A knob 17 for driving the linkage structure is rotatably connected to the front outer side wall of the door body 2.

[0037] A shaft 18 is rotatably connected between the front and rear walls of the middle cavity 4 through a bearing. The front end of the shaft 18 passes through the middle cavity 4 and is fixedly connected to the knob 17. The driving structure includes a movable plate 19 and a spring 20. The linkage structure includes a fixed pulley 21 and a pull rope 22. The movable plate 19 is fixedly sleeved on the outside of the slide rod 9 and slides left and right along the cavity wall of the slide cavity 6. The spring 20 is fixed between the left side wall of the movable plate 19 and the left side wall of the slide cavity 6, and sleeved on the outside of the slide rod 9. The fixed pulley 21 is installed in the cavity 5. The left end of the slide rod 9 penetrates into the cavity 5 in a sliding connection manner and is fixedly connected to the pull rope 22. The other end of the pull rope 22 passes around the fixed pulley 21 and is fixedly connected to the shaft 18.

[0038] A bracket 23 is fixed on the front outer side wall of the door body 2, which is located just above the knob 17. A limit plate 24 is hinged on the bracket 23. A through hole 25 is provided on the limit plate 24. A clamping rod 26 for passing through the through hole 25 is fixed at the front edge of the knob 17.

[0039] Additionally, the outer fixed sleeve of the shaft 18 is provided with a partition 27 located in the middle cavity 4, the partition 27 divides the shaft 18 into two parts, front and rear, and the two pull ropes 22 are respectively fixed to the front and rear parts of the shaft 18. The provision of the partition 27 can prevent the two pull ropes 22 from being entangled with each other.

[0040] Working principle:

[0041] When the insertion rod 11 needs to be pulled out of the socket 3, turn the knob 17. The knob 17 drives the shaft 18 to rotate. As the shaft 18 rotates, the pull rope 22 will be wrapped around the shaft 18. The pull rope 22 pulls the slide bar 9, and the slide bar 9 moves to the left. The slide bar 9 drives the movable plate 19 to move to the left along the cavity wall of the slide cavity 6. The spring 20 is compressed to form a rebound force to the right. The slide bar 9 moves to the left and drives the connector 10 to move to the left. The connector 10 drives the third connecting rod 16 to rotate. The third connecting rod 16 drives the first connecting rod 14 and the second connecting rod 15 to rotate. The second connecting rod 15 drives the slide plate 12 to move to the left along the cavity wall of the mounting cavity 7 and the guide rod 13. The slide plate 12 drives the insertion rod 11 to move to the left. When the insertion rod 11 is completely pulled out of the socket 3, the position of the clamping rod 26 corresponds to the position of the through hole 25. The limiting plate 24 is rotated downward so that the limiting plate 24 is sleeved on the outside of the clamping rod 26 through the through hole 25 , and the knob 17 can be fixed by the limiting plate 24 .

[0042] Similarly, when the insertion rod 11 needs to be inserted into the insertion hole 3, the limit plate 24 is rotated upward, and the limit plate 24 no longer fixes the knob 17. Under the action of the rebound force of the spring 20, the shaft 18 and the knob 17 rotate to reset, and the pull rope 22 is unfolded from the shaft 18. The movable plate 19, the slide bar 9 and the insertion rod 11 move to the right to reset. After the insertion rod 11 is reset, it will be inserted into the insertion hole 3, thereby further fixing the door body 2 and the door frame 1. Even if the criminals pry open the lock, it is difficult to enter the house, thereby improving the safety and anti-theft performance of the anti-theft door body. Moreover, when the insertion rod 11 is fully inserted into the insertion hole 3, the angle between the first connecting rod 14 and the second connecting rod 15 is 180°. When a force is directly applied to the insertion rod 11 to make it move to the left, the force cannot rotate the first connecting rod 14 and the second connecting rod 15, and the insertion rod 11 cannot move to the left and retract into the installation cavity 7 and the slide hole 8. That is, only by turning the knob 17 located inside the house can the rod 11 be driven to move to the left and reset, and it is impossible to directly apply a leftward force to the rod 11 to reset it, which improves the stability of the rod 11 when it is inserted into the socket 3, thereby further improving the safety and anti-theft performance of the anti-theft door body.

[0043] Embodiment 2:

[0044] The difference from the first embodiment is that the shaft 18 is no longer arranged in the middle cavity 4, the driving structure no longer includes the moving plate 19 and the spring 20, and the linkage structure no longer includes the fixed pulley 21 and the pull rope 22. Figure 5-Figure 7As shown, a worm 28 is rotatably connected between the front and rear walls of the middle cavity 4 through a bearing. The front end of the worm 28 passes through the middle cavity 4 and is fixedly connected to the knob 17. An intermediate rod 29 is rotatably connected between the upper and lower walls of the middle cavity 4. A worm wheel 30 meshing with the worm 28 is fixedly sleeved on the outside of the intermediate rod 29. A threaded groove 31 is provided on the left end of the slide rod 9. The driving structure includes a screw 32 and a driven gear 33. The linkage structure includes a rotating rod 34 and a driving gear 35. The screw 32 is rotatably connected between the cavity 5 and the slide cavity 6 through a bearing. The left end of the screw 32 passes into the cavity 5. The driven gear 33 is fixedly sleeved on the outside of the left end of the screw 32 and is located in the cavity 5. The slide rod 9 is sleeved on the outside of the screw 32 in a threaded connection manner through the threaded groove 31. The rotating rod 34 is rotatably connected between the cavity 5 and the middle cavity 4 through a bearing. One end of the rotating rod 34 is fixedly connected to the intermediate rod 29. The other end of the rotating rod 34 is located in the cavity 5 and is fixedly connected to the driving gear 35. The driving gear 35 is meshed with the driven gear 33.

[0045] The knob 17 is turned, and the knob 17 drives the worm 28 to rotate. The worm 28 drives the worm wheel 30 to rotate. The worm wheel 30 drives the intermediate rod 29 to rotate. The intermediate rod 29 drives the rotating rod 34 to rotate. The rotating rod 34 drives the driving gear 35 to rotate. The driving gear 35 drives the driven gear 33 to rotate. The driven gear 33 drives the screw rod 32 to rotate. The screw rod 32 drives the slide rod 9 to move rightward, so that the insertion rod 11 is inserted into the insertion hole 3. Similarly, the knob 17 can be turned in the opposite direction to drive the insertion rod 11 to be pulled out of the insertion hole 3.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-security anti-theft door, comprising an anti-theft door body, wherein the anti-theft door body comprises a door frame (1) and a door body (2), wherein the door body (2) is located inside the door frame (1), and the door body (2) and the left side of the door frame (1) are hingedly connected by a hinge, characterized in that: The right inner wall of the door frame (1) is provided with two insertion holes (3), the interior of the door body (2) is provided with an intermediate cavity (4) and two groups of inner cavity groups, the two groups of inner cavity groups are symmetrically arranged up and down and correspond to the two insertion holes (3) respectively, the inner cavity groups include a cavity (5), a sliding cavity (6) and an installation cavity (7) from left to right, the right cavity wall of the installation cavity (7) is provided with a sliding hole (8) corresponding to the insertion hole (3), the intermediate cavity (4) is located between the two cavities (5), a sliding rod (9) is slidably connected in the sliding cavity (6), the right end of the sliding rod (9) is inserted into the installation cavity (7) in a sliding connection manner and is fixed with a connector (10), a self-locking structure is provided in the installation cavity (7), the self-locking structure includes an insertion rod (11), a slide plate (12) and two groups of connecting rod structures, the slide plate (12) slides left and right along the cavity wall of the installation cavity (7), the insertion rod (11) is fixed to the slide plate (12) ), the right end of the insertion rod (11) passes through the sliding hole (8) and is inserted into the insertion hole (3), the two groups of the connecting rod structure are symmetrically arranged up and down, and each includes a first connecting rod (14), a second connecting rod (15) and a third connecting rod (16), the left end of the first connecting rod (14) is hinged to the left cavity wall of the installation cavity (7), the right end of the second connecting rod (15) is hinged to the left wall of the slide plate (12), the right end of the first connecting rod (14) and the left end of the second connecting rod (15) are both hinged to one end of the third connecting rod (16), and the other end of the third connecting rod (16) is hinged to the connecting head (10), a driving structure for driving the sliding rod (9) to move left and right is arranged between the cavity (5) and the sliding cavity (6), a linkage structure for driving the driving structure is arranged between the middle cavity (4) and the two cavities (5), and a knob (17) for driving the linkage structure is rotatably connected to the front outer wall of the door body (2).

2. A high-security anti-theft door according to claim 1, characterized in that: Two guide rods (13) symmetrically arranged up and down are fixed between the left and right cavity walls of the installation cavity (7), and the upper and lower ends of the slide plate (12) are respectively slidably sleeved on the outside of the two guide rods (13).

3. A high-security anti-theft door according to claim 1, characterized in that: A shaft (18) is rotatably connected between the front and rear side walls of the middle cavity (4) via a bearing. The front end of the shaft (18) passes through the middle cavity (4) and is fixedly connected to the knob (17). The driving structure comprises a movable plate (19) and a spring (20). The linkage structure comprises a fixed pulley (21) and a pull rope (22). The movable plate (19) is fixedly sleeved on the outside of the slide rod (9) and slides left and right along the cavity wall of the slide cavity (6). The spring (20) is fixed between the left side wall of the movable plate (19) and the left side wall of the slide cavity (6), and sleeved on the outside of the slide rod (9). The fixed pulley (21) is installed in the cavity (5). The left end of the slide rod (9) passes into the cavity (5) in a sliding connection manner and is fixedly connected to the pull rope (22). The other end of the pull rope (22) passes around the fixed pulley (21) and is fixedly connected to the shaft (18).

4. A high-security anti-theft door according to claim 3, characterized in that: A bracket (23) located directly above the knob (17) is fixed on the front outer side wall of the door body (2), a limit plate (24) is hinged on the bracket (23), a through hole (25) is provided on the limit plate (24), and a clamping rod (26) for passing through the through hole (25) is fixed at the front edge of the knob (17).

5. A high-security anti-theft door according to claim 4, characterized in that: The outer fixing sleeve of the shaft rod (18) is provided with a partition (27) located in the middle cavity (4), and the partition (27) divides the shaft rod (18) into two parts, front and rear. The two pull ropes (22) are respectively fixed to the front and rear parts of the shaft rod (18).

6. A high-security anti-theft door according to claim 1, characterized in that: A worm (28) is rotatably connected between the front and rear walls of the intermediate cavity (4) via a bearing. The front end of the worm (28) passes through the intermediate cavity (4) and is fixedly connected to the knob (17). An intermediate rod (29) is rotatably connected between the upper and lower walls of the intermediate cavity (4). A worm wheel (30) meshing with the worm (28) is provided on the outer fixed sleeve of the intermediate rod (29). A threaded groove (31) is provided at the left end of the slide rod (9). The driving structure comprises a screw rod (32) and a driven gear (33). The linkage structure comprises a rotating rod (34) and a driving gear (35). The screw rod (32) is rotatably connected to the cavity (4) via a bearing. 5) and the sliding cavity (6), the left end of the screw rod (32) penetrates into the cavity (5), the driven gear (33) is fixedly sleeved on the outside of the left end of the screw rod (32) and is located in the cavity (5), the sliding rod (9) is sleeved on the outside of the screw rod (32) in a threaded connection manner through a thread groove (31), the rotating rod (34) is rotatably connected between the cavity (5) and the intermediate cavity (4) through a bearing, one end of the rotating rod (34) is fixedly connected to the intermediate rod (29), the other end of the rotating rod (34) is located in the cavity (5) and fixedly connected to the driving gear (35), and the driving gear (35) is meshed with the driven gear (33).

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