Mechanical locking device of security door

Abstract

The utility model discloses a security door mechanical locking device which comprises a door lock, a lock hole is formed in the door lock, a protection mechanism is arranged outside the lock hole, a handle is arranged on the door lock, the protection mechanism comprises a protection shell, a through hole is formed in the protection shell, a groove is formed in the top of the through hole, an insertion frame is inserted into the groove, and the insertion frame is connected with the handle. And a first magnet block is fixedly connected to the surface of one side of the insertion frame. According to the mechanical locking device for the anti-theft door, the inserting frame is inserted into the groove, the first magnet generates repulsive force to push the second magnet to move, the second magnet moves to jack up the movable baffle to expose the lock hole, after a door lock is unlocked, the inserting frame is pulled out of the groove, the second magnet loses constraint, and the reset spring releases pressure to push the movable baffle to move downwards; the lock hole cannot be directly opened from the outside through magnetic driving, foreign matter is prevented from directly entering the lock hole, and therefore the protection effect on the lock hole can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-theft door lock technology, specifically an anti-theft door mechanical locking device. Background Technology

[0002] Security doors are a type of door with both anti-theft and security functions. They are equipped with mechanical locks. In the current technology, the keyhole of the security door lock is exposed to the outside, making it easy for foreign objects to be maliciously inserted into the keyhole and causing blockage. Therefore, the protection effect of the keyhole is not ideal.

[0003] For example, patent publication number CN208236143U describes a security door with a concealed lock. It includes a door leaf and a door frame, with the door leaf hinged to the door frame. It also includes a mechanical lock, a concealed lock, a controller, a sensor, and an identity verification device. The mechanical lock, sensor, and identity verification device are installed on the door leaf, while the controller and concealed lock are installed inside the door frame. The controller is connected to the concealed lock, and the sensor and identity verification device are wirelessly connected to the controller. The security door can only be opened by simultaneously opening both the concealed lock and the mechanical lock. This dual-security design provides the door with a double anti-theft effect. Since the concealed lock is installed inside the door frame, it remains secure even if the mechanical lock is broken. Furthermore, the concealed lock's placement inside the door frame alters the traditional lock's location, making it difficult for thieves to pinpoint its location and improving security. However, this design also exposes the keyhole, making it vulnerable to being blocked by malicious objects, thus compromising its protection. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mechanical locking device for security doors, which solves the problem that the lock hole of a security door is exposed to the outside, making it easy for foreign objects to be maliciously inserted into the lock hole and causing blockage, resulting in an unsatisfactory protection effect for the lock hole.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a mechanical locking device for a burglarproof door, including a door lock, a lock hole provided on the door lock, a protective mechanism provided outside the lock hole, and a handle provided on the door lock;

[0006] The protective mechanism includes a protective shell with a through hole and a groove at the top of the through hole. A bracket is inserted into the groove. A first magnet is fixedly connected to one side of the bracket, and a protrusion is fixedly connected to the other side of the bracket. Two first guide rods are fixedly connected inside the protective shell. A movable baffle is slidably connected to the two first guide rods. A return spring is provided at the top of the movable baffle. A movable groove is provided on the movable baffle. A first movable block is provided inside the movable groove. A second movable block is fixedly connected to the end of the first movable block. A rotating shaft is fixedly connected to the second movable block. Two connecting seats are provided on one side of the second movable block. A second guide rod is slidably connected to each of the two connecting seats. A second magnet is fixedly connected between the two connecting seats.

[0007] Preferably, the protective shell is fixedly installed on the door lock, and the through hole matches the lock hole, so that the key can be inserted into the lock hole through the through hole, thereby enabling normal door opening.

[0008] Preferably, the opposite ends of the first magnet block and the second magnet block are set to be of the same polarity, and the insert is matched with the groove so that the insert can be inserted into the groove, thereby enabling the first magnet block to push the second magnet block to move.

[0009] Preferably, the second movable block is in contact with the second magnet block, and the first movable block is in contact with the inner wall of the movable groove, so that the second magnet block can drive the first movable block to rotate through the second movable block.

[0010] Preferably, the length of the first movable block is less than the length of the second movable block, and the first and second movable blocks are rotatably connected to the inner wall of the protective shell through a rotating shaft, so that the first movable block, the second movable block and the rotating shaft form a lever structure, thereby facilitating the movement of the movable baffle.

[0011] Preferably, the second guide rod is fixedly installed inside the protective shell, and the second magnet block is slidably connected to the second guide rod through two connecting seats, so that it can guide the movement of the second magnet block.

[0012] Preferably, the handle includes a handle body, one end of which has an embedding groove that matches the socket. A third magnet is fixedly installed inside the embedding groove. The magnetic poles of the third magnet and the first magnet are opposite magnetic poles, so that the socket can be retracted into the inside of the handle for concealment and storage, preventing loss.

[0013] This utility model provides a mechanical locking device for security doors. Compared with the prior art, it has the following advantages:

[0014] Beneficial effects:

[0015] 1. This anti-theft door mechanical locking device works by inserting a bracket into a groove. The first magnet generates a repulsive force that pushes the second magnet to move. The movement of the second magnet lifts up the movable baffle, exposing the lock hole. After the door lock is opened, the bracket is pulled out of the groove. The second magnet loses its constraint, and the return spring releases pressure, pushing the movable baffle down so that the movable baffle covers the lock hole. The magnetic drive prevents the door from being opened directly from the outside, preventing foreign objects from directly entering the lock hole, thereby effectively improving the protection of the lock hole.

[0016] 2. The mechanical locking device of this security door, by inserting the bracket into the recessed groove, uses the third magnet to hold the first magnet, and retracts the bracket into the inside of the handle for concealed storage to prevent loss. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the protective mechanism structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first movable block and the second movable block of this utility model;

[0020] Figure 4 This is a schematic diagram of the inner structure of the handle of this utility model.

[0021] In the diagram: 1. Door lock; 2. Protective mechanism; 201. Protective shell; 202. Through hole; 203. Groove; 204. Socket; 205. First magnet block; 206. Protrusion block; 207. First guide rod; 208. Movable baffle; 209. Return spring; 210. Movable groove; 211. First movable block; 212. Second movable block; 213. Rotating shaft; 214. Connecting seat; 215. Second magnet block; 216. Second guide rod; 3. Lock hole; 4. Handle; 401. Handle body; 402. Embedded groove; 403. Third magnet block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3This utility model provides a technical solution: a mechanical locking device for a burglarproof door, including a door lock 1, a lock hole 3 on the door lock 1, a protective mechanism 2 on the outside of the lock hole 3, and a handle 4 on the door lock 1. The lock hole 3 can be protected by the protective mechanism 2, and the lock hole 3 can be exposed by magnetic drive, making it impossible to open directly from the outside, preventing foreign objects from directly entering the lock hole 3, thereby effectively improving the protection effect of the lock hole 3.

[0024] The protective mechanism 2 includes a protective shell 201 with a through hole 202. The protective shell 201 is fixedly installed on the door lock 1, and the through hole 202 matches the lock hole 3, allowing a key to be inserted into the lock hole 3 through the through hole 202 for normal door opening. A groove 203 is provided at the top of the through hole 202, and a bracket 204 is inserted into the groove 203. A first magnet 205 is fixedly connected to one side of the bracket 204, and a protrusion 206 is fixedly connected to the other side of the bracket 204, facilitating the movement of the bracket 204. Two first guide rods 207 are fixedly connected inside the protective shell 201. A movable baffle 208 is slidably connected to the guide rod 207, which guides the movable baffle 208. A return spring 209 is provided at the top of the movable baffle 208, which resets the movable baffle 208, allowing it to fall down and cover the lock hole 3. A movable groove 210 is provided on the movable baffle 208, and a first movable block 211 is provided inside the movable groove 210. A second movable block 212 is fixedly connected to the end of the first movable block 211, and a rotating shaft 213 is fixedly connected to the second movable block 212. The length of the first movable block 211 is less than the length of the second movable block 212. The first movable block 211 and the second movable block 212... 2. The first movable block 211, the second movable block 212, and the rotating shaft 213 are rotatably connected to the inner wall of the protective shell 201, forming a lever structure that facilitates the movement of the movable baffle 208. Two connecting seats 214 are provided on one side of the second movable block 212, and a second guide rod 216 is slidably connected to each of the two connecting seats 214. The second guide rod 216 is fixedly installed inside the protective shell 201. The second magnet 215 is slidably connected to the second guide rod 216 through the two connecting seats 214, thus guiding the movement of the second magnet 215. A second magnet is fixedly connected between the two connecting seats 214. The iron block 215, the first magnet block 205 and the second magnet block 215 have their opposite magnetic poles set to be of the same polarity. According to the principle of like poles repelling each other, the first magnet block 205 can push the second magnet block 215 to move. The insert 204 matches the groove 203, so that the insert 204 can be inserted into the groove 203, thereby enabling the first magnet block 205 to push the second magnet block 215 to move. The second movable block 212 is in contact with the second magnet block 215, and the first movable block 211 is in contact with the inner wall of the movable groove 210, so that the second magnet block 215 can drive the first movable block 211 to rotate through the second movable block 212.

[0025] Please see Figure 1 and Figure 4The handle 4 includes a handle body 401. One end of the handle body 401 has an embedded groove 402. The embedded groove 402 matches the bracket 204. A third magnet 403 is fixedly installed inside the embedded groove 402. The opposite magnetic poles of the third magnet 403 and the first magnet 205 are set as opposite magnetic poles. According to the principle of opposite poles attracting, the third magnet 403 can attract the first magnet 205 for fixation. The bracket 204 can be inserted into the embedded groove 402, and the third magnet 403 can attract the first magnet 205, so that the bracket 204 can be stored inside the handle 4 for hidden storage to prevent loss.

[0026] During operation, the insert 204 is inserted into the groove 203. The first magnet 205 generates a repulsive force to push the second magnet 215 to move. The movement of the second magnet 215 pushes the second movable block 212 to rotate. The rotation of the second movable block 212 drives the first movable block 211 to rotate. The rotation of the first movable block 211 pushes the movable baffle 208 up through the movable slot 210. The movable baffle 208 moves upward to expose the lock hole 3 and compresses the return spring 209. After the door lock 1 is opened, the insert 204 is pulled out from the groove 203. The second magnet 215 is unrestrained, and the return spring 209 releases pressure to push the movable baffle 208 down, so that the movable baffle 208 covers the lock hole 3. It cannot be opened directly from the outside by magnetic drive, preventing foreign objects from directly entering the lock hole 3, thereby effectively improving the protection effect of the lock hole 3.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A mechanical locking device for a security door, comprising a door lock (1), characterized in that: The door lock (1) is provided with a lock hole (3), and the lock hole (3) is externally provided with a protection mechanism (2); the door lock (1) is provided with a handle (4); The protection mechanism (2) comprises a protection shell (201), a through hole (202) is formed in the protection shell (201), a recess (203) is formed in the top of the through hole (202), a plug frame (204) is inserted into the recess (203), a first magnet block (205) is fixedly connected to one side surface of the plug frame (204), a protruding block (206) is fixedly connected to the other side surface of the plug frame (204), two first guide rods (207) are fixedly connected to the inside of the protection shell (201), a movable baffle (208) is slidably connected to the two first guide rods (207), a reset spring (209) is arranged on the top of the movable baffle (208), a movable groove (210) is formed in the movable baffle (208), a first movable block (211) is arranged in the movable groove (210), a second movable block (212) is fixedly connected to the end of the first movable block (211), a rotating shaft (213) is fixedly connected to the second movable block (212), two connecting seats (214) are arranged on one side of the second movable block (212), a second guide rod (216) is slidably connected to each of the two connecting seats (214), and a second magnet block (215) is fixedly connected between the two connecting seats (214).

2. The mechanical locking device of a security door according to claim 1, characterized in that: The protection shell (201) is fixedly installed on the door lock (1), and the through hole (202) is matched with the lock hole (3).

3. The mechanical locking device of a security door according to claim 1, characterized in that: The opposite end magnetic poles of the first magnet block (205) and the second magnet block (215) are arranged as same magnetic poles, and the plug frame (204) is matched with the recess (203).

4. The mechanical locking device of a security door according to claim 1, characterized in that: The second movable block (212) is in contact with the second magnet block (215), and the first movable block (211) is in contact with the inner wall of the movable groove (210).

5. The mechanical locking device of a security door according to claim 1, characterized in that: The length of the first movable block (211) is smaller than the length of the second movable block (212), and the first movable block (211) and the second movable block (212) are rotationally connected with the inner wall of the protection shell (201) through the rotating shaft (213).

6. The mechanical locking device of a security door according to claim 1, characterized in that: The second guide rod (216) is fixedly installed in the protection shell (201), and the second magnet block (215) is slidably connected with the second guide rod (216) through the two connecting seats (214).

7. The mechanical locking device of a security door according to claim 1, characterized in that: The handle (4) comprises a handle body (401), an embedding groove (402) is formed in one end of the handle body (401), and the embedding groove (402) is matched with the plug frame (204).

8. A mechanical locking device for a security door as claimed in claim 7 wherein: A third magnet block (403) is fixedly installed in the embedding groove (402), and the opposite end magnetic poles of the third magnet block (403) and the first magnet block (205) are arranged as opposite magnetic poles.

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