High security break-in resistant lock

Abstract

The application discloses a high-safety anti-door-breaking lock and belongs to the technical field of door locks. The high-safety anti-door-breaking lock comprises a lock shell, a main lock column, a latch lock column and a safety lock column are arranged on the lock shell, a safety lock cavity and a main lock cavity are arranged on the lock shell and are distributed on the left and right sides, a safety connecting plate is fixedly arranged at the lower end of the safety lock column, a fixing frame is fixedly arranged on the safety connecting plate, a lifting frame capable of sliding up and down is arranged in the lock shell, a rotating column is fixedly arranged at the lower end of the latch lock column, the rotating column is rotationally connected with the lifting frame, a sliding insertion rod is fixedly arranged on the end of the fixing frame close to the rotating column, a guide sliding groove is arranged on the outer periphery of the rotating column, and the sliding insertion rod is in sliding connection with the guide sliding groove. The application has the beneficial effect that the safety lock column is in circumferential rotation relative to the latch lock column in the process of extending from inside to outside, the main lock column, the latch lock column and the safety lock column can be inserted into a door frame to realize safety protection, and the safety protection effect of the lock body can be improved.

Description

Technical Field

[0001] This application relates to the field of door lock technology, and more specifically, to a high-security, tamper-proof door lock. Background Technology

[0002] There are many types of door locks, and the requirements for door locks vary in different situations. Ordinary households generally use security door locks, which are designed primarily for security and protection. Due to factors such as security, practicality, space planning, climate, and environmental factors, existing door bodies and locks are usually designed with one orientation, namely, facing inward. Security doors on the market have keyholes that can be easily pried open with metal wires or other objects using special techniques. Once opened, the main lock loses its protective effect, and the safety lock provides separate protection, resulting in a decrease in the protective effect and making the door lock easier to damage, thus losing its protective function.

[0003] Therefore, a highly secure, tamper-proof door lock is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a high-security, anti-breakage door lock, comprising: a lock shell; a main lock pin arranged in a row on the upper end of the lock shell; a latching lock pin and a safety lock pin located on the left side of the lock shell and the main lock pin; a safety lock cavity and a main lock cavity distributed on the left and right sides of both the front and rear ends of the lock shell; the safety lock cavity is used to control the safety lock pin; the main lock cavity is used to control the main lock pin; and sliding pieces that can slide left and right are inserted into both the left and right ends of the lock shell. The two parts have overlapping areas at their close ends. A fixed rod is fixed inside the lock housing, and a rotating piece is rotatably connected to the fixed rod. A slot is opened at the lower end of the sliding piece, and a hook is provided at the lower end of the rotating piece to engage with the slot at the lower end of the sliding piece. A safety connecting piece is fixed at the lower end of the safety lock pin, and a main lock connecting frame is fixed at the lower end of the main lock pin. Both the safety connecting piece and the main lock connecting frame are slidably disposed inside the lock housing. A connecting slide rod is fixed at the front end of the safety connecting piece, and a sliding groove is opened on the rotating piece. The connecting slide rod is slidably engaged with the sliding groove.

[0006] Preferably, a positioning rod is fixed inside the lock housing, and a vertically opened guide groove is provided on the safety connecting piece. The positioning rod slides in cooperation with the guide groove. A fixing member is threadedly fixed to the safety connecting piece, and an insert is fixed on the outer periphery of the fixing member. A fixing frame is inserted into the fixing member, and the fixing member is used to fix the fixing frame on the safety connecting piece. A guide rod is threadedly installed at the upper end of the lock housing, and the guide rod slides in cooperation with the fixing frame. A sliding insert is fixed at the end of the fixing frame away from the safety connecting piece. A rotating column is fixed at the lower end of the latch lock pin, and a guide groove is opened on the outer periphery of the rotating column. The guide groove includes a straight groove on the upper and lower sides and a spiral groove in the middle, and the grooves are interconnected.

[0007] Preferably, the lock housing is provided with a lifting frame that can slide up and down, and a spring is connected between the lock housing and the lifting frame for reset. The lifting frame is rotatably engaged with the rotating column. A guide plate is fixed inside the lock housing. The guide plate is slidably engaged with the lifting frame up and down, and the guide plate is slidably engaged with two sliding plates left and right. Each of the two sliding plates has a limiting groove. The two limiting grooves have an overlapping area. The two limiting grooves extend obliquely and in opposite directions. A guide rod is fixed on the main lock connecting frame and slides in engagement with the limiting groove.

[0008] The beneficial effects of this application are as follows: 1. By cooperating with the fixed bracket fixed on the safety connecting piece, the sliding rod fixed on the fixed bracket, and the guide groove opened on the rotating column, the safety lock cylinder extends from the inside to the outside, thereby realizing the circumferential rotation of the latch lock cylinder. This allows the latch lock cylinder to adjust its rotation direction and insert into the door frame. In this way, the main lock cylinder, the latch lock cylinder, and the safety lock cylinder can be inserted into the door frame to achieve security protection, thereby improving the security protection effect of the lock body.

[0009] 2. When the safety lock cylinder extends and is inserted into the door frame, it abuts against the sliding plate through the rotating plate, thereby preventing the sliding plate from moving left and right, and thus preventing the main lock cylinder from moving up and down. In conjunction with the rotation of the latch lock cylinder, the main lock cylinder, the latch lock cylinder and the safety lock cylinder are fully protected, improving the protection effect. During the process, the main lock cylinder is supported by the sliding plate and cannot move downward, thus preventing the main lock cylinder from being unlocked from the outside. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0011] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the appearance of an embodiment of a high-security anti-breakage door lock according to this application; Figure 2 yes Figure 1 A schematic diagram of the appearance after removing the front lock shell in the embodiment; Figure 3 yes Figure 2 A schematic diagram of the front view of the structure in the embodiment; Figure 4 yes Figure 3 A schematic diagram of the structure after removing one sliding piece in the embodiment; Figure 5 yes Figure 3 A schematic diagram of the structure after removing the two sliding pieces in the embodiment; Figure 6 yes Figure 2 A schematic diagram of the connection between the latch bolt and the safety bolt in the embodiment; Figure 7 yes Figure 6 A schematic diagram of the appearance from another perspective in the embodiment; Figure 8 It is a high-security anti-breakage door lock implementation structure based on existing gear structures.

[0013] Figure label: 10. Lock housing; 11. Main lock cylinder; 12. Lug bolt cylinder; 13. Safety lock cylinder; 14. Sliding plate; 15. Safety lock cavity; 16. Main lock cavity; 17. Rotating plate; 18. Safety connecting plate; 19. Main lock connecting frame; 20. Fixing rod; 21. Connecting slide rod; 22. Sliding groove; 23. Positioning rod; 24. Guide groove; 25. Fixing frame; 26. Fixing component; 27. Guide rod; 28. Sliding insert rod; 29. ​​Guide groove; 30. Rotating column; 31. Lifting frame; 32. Guide plate; 33. Limiting groove. Detailed Implementation

[0014] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0015] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0016] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0017] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0020] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Reference Figure 1-4 and Figure 8A high-security, tamper-proof door lock includes: a lock housing 10; a main lock pin 11 arranged in a row on the upper end of the lock housing 10; a bolt lock pin 12 and a safety lock pin 13 located on the left side of the lock housing 10 and the main lock pin 11; a safety lock cavity 15 and a main lock cavity 16 distributed on the left and right sides of both the front and rear ends of the lock housing 10, the safety lock cavity 15 controlling the safety lock pin 13, and the main lock cavity 16 controlling the main lock pin 11; sliding pieces 14 that can slide left and right are inserted into both the left and right ends of the lock housing 10, and the two sliding pieces 14 have overlapping areas at their close proximity ends. A fixed rod 20 is fixed inside the housing 10. A rotating piece 17 is rotatably connected to the fixed rod 20. A slot is opened at the lower end of the sliding piece 14. A hook is provided at the lower end of the rotating piece 17 and engages with the slot at the lower end of the sliding piece 14. A safety connecting piece 18 is fixed at the lower end of the safety lock pin 13. A main lock connecting frame 19 is fixed at the lower end of the main lock pin 11. Both the safety connecting piece 18 and the main lock connecting frame 19 are slidably arranged inside the lock housing 10. A connecting slide rod 21 is fixed at the front end of the safety connecting piece 18. A sliding groove 22 is opened on the rotating piece 17. The connecting slide rod 21 and the sliding groove 22 are slidably engaged. Specifically, two lock cylinders are installed in the safety lock cavity 15 and the main lock cavity 16 respectively. After the lock cylinders are fixedly connected to the lock shell 10, the main lock cylinder 11 and the safety lock cylinder 13 are moved downward by inserting the key into the corresponding lock cylinder and turning it to unlock the lock. Gear structures are installed in the lock shell 10 at the corresponding locations of the safety lock cavity 15 and the main lock cavity 16 to control the up and down sliding of the safety connecting piece 18 and the main lock connecting frame 19. The lock cylinder and gear structure are designed with reference to existing technology to achieve working control. Lock cylinders and gear mechanisms are installed in both the safety lock cavity 15 and the main lock cavity 16 to control the inward and outward extension and retraction of the safety lock cylinder 13 and the main lock cylinder 11 respectively. As the safety connecting piece 18 moves downward, the connecting slide rod 21 fixed on the safety connecting piece 18 moves downward, and then, by abutting against the side wall of the sliding groove 22, pushes the sliding groove 22 to rotate circumferentially around the fixed rod 20 as the rotation axis, thereby pushing the rotating piece 17 to swing downward, so that the hook on the rotating piece 17 disengages from the locking engagement with the slot at the sliding piece 14.

[0022] Reference Figure 5-7A positioning rod 23 is fixedly installed inside the lock housing 10. A vertically opened guide groove 24 is provided on the safety connecting piece 18. The positioning rod 23 and the guide groove 24 are slidably engaged. A fixing member 26 is threadedly fixed on the safety connecting piece 18. An insert block is fixed on the outer periphery of the fixing member 26. A fixing frame 25 is inserted and engaged on the fixing member 26. The fixing member 26 is used to fix the fixing frame 25 on the safety connecting piece 18. A guide rod 27 is threadedly installed on the upper end of the lock housing 10. The guide rod 27 and the fixing frame 25 are slidably engaged. A sliding insert rod 28 is fixed on the end of the fixing frame 25 away from the safety connecting piece 18. A rotating column 30 is fixed on the lower end of the tongue lock column 12. A guide groove 29 is opened on the outer periphery of the rotating column 30. The guide groove 29 includes a straight groove on the upper and lower sides and a spiral groove in the middle. The grooves are interconnected. The safety connecting piece 18 slides downward under the push of the gear structure. Under the sliding engagement of the positioning rod 23 and the fixing rod 20, the safety connecting piece 18 slides vertically downward. During the descent of the safety connecting piece 18, the fixing bracket 25, fixed to the safety connecting piece 18 by the fixing member 26, moves downward synchronously (the fixing member 26 passes through the safety connecting piece 18 rearward and is fixed by a nut installed at its rear end). The fixing bracket 25 reduces its lever arm under the up-and-down sliding engagement of the guide rod 27, thereby allowing the sliding insert rod 28, fixed on the fixing bracket 25, to slide within the guide groove 29. This causes the rotating column 30 to rotate circumferentially under the sliding engagement of the sliding insert rod 28 and the guide groove 29, thereby causing the latch lock column 12 to rotate half a turn circumferentially, changing the tilt direction of the latch lock column 12. This allows the latch lock column 12 to also fit against the door frame for protection, thus increasing the protective effect.

[0023] Reference Figure 3-4 The lock housing 10 is provided with a lifting frame 31 that can slide up and down. A spring is connected between the lock housing 10 and the lifting frame 31 for reset. The lifting frame 31 is rotatably engaged with the rotating column 30. A guide plate 32 is fixedly provided inside the lock housing 10. The guide plate 32 is slidably engaged with the lifting frame 31 up and down. The guide plate 32 is slidably engaged with two sliding plates 14 left and right. Each of the two sliding plates 14 has a limit groove 33. The two limit grooves 33 have an overlapping area. The two limit grooves 33 are inclined and extended in opposite directions. A guide rod is fixedly provided on the main lock connecting frame 19 and slides in coordination with the limit groove 33. like Figure 3As shown, when the safety lock pin 13 and the safety connecting piece 18 are in the rising state, the hook at the lower end of the rotating piece 17 is inserted into the slot at the lower end of the sliding piece 14, thereby restricting the left and right movement of the sliding piece 14. Under the sliding cooperation between the guide rod in the lock housing 10 and the side wall of the limiting slide groove 33, the guide rod is located on the straight slide groove where the two limiting slide grooves 33 overlap. Then, the guide rod is abutted by the oblique slide groove on the sliding piece 14, thereby achieving the working state of preventing the main lock connecting frame 19 from falling. The main lock pin 11 and the safety lock pin 13 extend and insert into the door frame to achieve locking protection, further improving the protection effect of the door lock. By setting the lock cylinder at the safety lock cavity 15 as a single-opening lock cylinder and setting the unlocking mechanism (such as a knob) indoors, security protection is achieved. When the hook disengages from the sliding piece 14, the two sliding pieces 14 can move and retract left and right under the sliding engagement with the lock housing 10 and the guide piece 32. This allows the guide rod fixed on the main lock connecting frame 19 and abutting against the side wall of the limiting slide groove 33 to move downward, causing the main lock pin 11 to retract to the lock housing 10 and disengage from the insertion engagement with the door frame.

[0024] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A high-security, tamper-proof door lock, characterized in that, include: The lock housing (10) is provided with a main lock pin (11), a latch lock pin (12) and a safety lock pin (13). The lock housing (10) is provided with a safety lock cavity (15) and a main lock cavity (16) distributed on the left and right sides. Both the safety lock cavity (15) and the main lock cavity (16) are equipped with lock cylinders and gear mechanisms to control the inward and outward extension and retraction of the safety lock pin (13) and the main lock pin (11), respectively. The lower end of the safety lock pin (13) is fixedly provided with a safety connecting piece (18), and a fixing frame (25) is fixedly provided on the safety connecting piece (18). The lock housing (10) is provided with a lifting frame (31) that can slide up and down. The lower end of the tongue lock pin (12) is fixedly provided with a rotating pin (30), and the rotating pin (30) is rotatably connected to the lifting frame (31). The fixing frame (25) is fixedly provided with a sliding insert (28) near the end of the rotating pin (30). A guide groove (29) is provided on the outer periphery of the rotating pin (30), and the sliding insert (28) slides in cooperation with the guide groove (29).

2. The high-security anti-breakage door lock according to claim 1, characterized in that: The lock housing (10) has sliding pieces (14) at both ends. The two sliding pieces (14) are fitted together. The lower end of the sliding piece (14) is provided with a slot. The lock housing (10) is fixedly provided with a fixing rod (20). A rotating piece (17) is rotatably connected to the fixing rod (20). The lower end of the rotating piece (17) is fixedly provided with a hook. The hook can be inserted into the slot and engage with the sliding piece (14). The safety connecting piece (18) is fixedly provided with a connecting slide rod (21). The rotating piece (17) is provided with a sliding groove (22). The rotating piece (17) is slidably engaged with the sliding groove (22). The lock housing (10) is fixedly provided with a positioning rod (23) which is slidably engaged with the safety connecting piece (18).

3. A high-security anti-breakage door lock according to claim 2, characterized in that: The safety connecting piece (18) has two guide grooves (24), which slide in cooperation with the fixing rod (20) and the positioning rod (23) respectively. Both guide grooves (24) are vertically arranged.

4. A high-security anti-breakage door lock according to claim 1, characterized in that: The lock housing (10) is fixedly provided with a guide rod (27), and the outer periphery of the guide rod (27) is provided with threads. The middle end of the fixing frame (25) slides up and down with the guide rod (27).

5. A high-security anti-breakage door lock according to claim 2, characterized in that: The lock housing (10) is fixedly provided with a guide plate (32), the lifting frame (31) slides up and down with the guide plate (32), and a spring is connected between the lifting frame (31) and the guide plate (32). The guide plate (32) passes through the two sliding plates (14) and slides left and right with the two sliding plates (14).

6. A high-security anti-breakage door lock according to claim 1, characterized in that: The circumferential deflection of the guide groove (29) is 180 degrees.

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