Electromagnetic lock capable of preventing vibration opening of safe box

Abstract

The utility model relates to the technical field of electromagnetic locks, in particular to an anti-vibration opening electromagnetic lock for a safe box, which comprises a shell, a lock seat, an electromagnetic iron lock and an anti-vibration opening component, the lock seat is mounted in the shell, the electromagnetic iron lock comprises a coil framework, a fixed iron core and an armature spring bolt, the coil framework is fixedly arranged in the lock seat, and the fixed iron core is fixedly arranged in the armature spring bolt. An electromagnetic coil is wound on the outer side of the coil framework, the fixed iron core is fixedly arranged in the coil framework, the lower end of the armature spring bolt penetrates through the fixed iron core, the upper end of the armature spring bolt extends out of the shell, a first elastic piece enabling the armature spring bolt to keep the trend of extending out of the shell is arranged in the lock seat, and the anti-vibration opening assembly is arranged in the lock seat. The anti-vibration opening assembly abuts against the lower end of the armature spring bolt and can be reset through the second elastic piece. The problem that a traditional electromagnetic lock is possibly unlocked accidentally in a vibration environment is solved, the safety of the safe box is improved, and a powerful guarantee is provided for personal property safety of a user.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic lock technology, specifically relating to an electromagnetic lock for opening a safe without vibration. Background Technology

[0002] As people's living standards continue to improve, safes are being used in increasingly wider applications, extending beyond traditional security to various aspects of daily life. For example, in office buildings or residential areas, safes are used to store parcels or mail, ensuring the recipient's privacy and the safety of their belongings; in supermarkets, shopping malls, and other public places, personal safes are provided for customers' peace of mind; and in tourist attractions or commercial streets, safes serve as part of self-service vending machines, offering users a convenient shopping experience. Because they involve personal property security, safes in current technology are receiving increasing attention.

[0003] Existing safes are typically equipped with electromagnetic lock systems to lock the doors and ensure the safety of the contents. An electromagnetic lock mainly consists of a hook and an electromagnet connected to it. Driven by the electromagnet, the hook can flexibly switch between a locked and unlocked position. Specifically, the electromagnet includes a solenoid, an armature, and a spring element. The spring element is connected to the armature, which is in turn connected to the hook. When the solenoid is de-energized, the elastic force of the spring element causes the armature to extend, thereby moving the hook to the locked position and firmly locking the door. When the solenoid is energized, the generated magnetic force attracts the armature, causing it to retract against the elastic force of the spring element, thus driving the hook to the unlocked position, allowing the door to open smoothly.

[0004] However, this electromagnetic lock design, which relies on the elastic force of the elastic element to keep the hook in the locked position, has significant shortcomings in shock resistance. In actual use, safes may be affected by various external vibrations, such as building vibrations and human impacts. These vibrations may cause the elastic element to deform or displace, causing the hook to accidentally move from the locked position to the unlocked position, resulting in the safe door being opened unexpectedly and failing to effectively protect the valuables inside.

[0005] Therefore, we propose an electromagnetic lock for opening safes without vibration to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, this utility model proposes an electromagnetic lock for opening a safe without vibration.

[0007] The technical solution adopted in this utility model is as follows:

[0008] An electromagnetic lock for safe opening with vibration protection includes a housing, a lock base, an electromagnet lock, and a vibration-proof opening component. The lock base is installed inside the housing. The electromagnet lock includes a coil frame, a fixed iron core, and an armature latch. The coil frame is fixedly installed inside the lock base, and an electromagnetic coil is wound around the outside of the coil frame. The fixed iron core is fixedly installed inside the coil frame. The lower end of the armature latch passes through the fixed iron core and slides with it. The upper end of the armature latch extends out of the housing, and an auxiliary lever is fixedly fitted in the middle of the armature latch to prevent it from sliding out of the housing. The lock base has a first elastic element that keeps the armature latch extending out of the housing. The vibration-proof opening component is installed inside the lock base and located below the armature latch. When subjected to external vibration, the vibration-proof opening component abuts against the lower end of the armature latch to prevent it from moving downwards, and can be reset by a second elastic element.

[0009] In a further technical solution, the vibration-damping opening assembly includes an impact iron post and a limiting paddle. The limiting paddle is located below the armature bolt and is rotatably disposed within the lock seat. The upper and lower sides of the distal end of the limiting paddle are respectively provided with a first chamber and a second chamber. The impact iron post and the second elastic element are respectively placed in the first chamber and the second chamber. The two ends of the second elastic element abut against the limiting paddle and the inner wall of the lock seat, respectively. The proximal end of the limiting paddle is located below the armature bolt and can abut against the lower end of the armature bolt.

[0010] In a further technical solution, an emergency unlocking component is also included. The emergency unlocking component is slidably disposed in the lock seat and is provided with a third elastic element that can reset the emergency unlocking component. A U-shaped lever is provided on one side of the emergency unlocking component, the armature bolt is located in the opening of the U-shaped lever, and the U-shaped lever is located above the auxiliary lever.

[0011] In a further technical solution, the first elastic element, the second elastic element, and the third elastic element are all return springs. The first elastic element is sleeved on the armature lock tongue, and both ends of the first elastic element abut against the auxiliary lever and the coil frame, respectively. A guide rod is provided below the emergency unlocking component, and a guide hole is provided on the lock seat to cooperate with the guide rod. The third elastic element is sleeved on the guide rod, and both ends of the third elastic element abut against the emergency unlocking component and the lock seat, respectively.

[0012] In a further technical solution, the armature latch is fitted with a latch fixing bracket on the upper part of the auxiliary lever. The latch fixing bracket is located inside the outer shell and is detachably connected to the lock seat.

[0013] In a further technical solution, the outer casing and the lock seat are fixed together by screws.

[0014] In a further technical solution, the back of the lock seat is provided with a buckle for securing the power cord.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model effectively avoids the risk of relying solely on elastic elements for locking by using a vibration-resistant opening component as a mechanical means of preventing accidental opening. It solves the problem that traditional electromagnetic locks may be accidentally unlocked in a vibration environment, thereby improving the security of the safe and providing strong protection for the user's personal property.

[0017] 2. This utility model adopts a design in which the armature locking tongue penetrates and fixes the iron core, which greatly increases the contact cross-sectional area and thus improves the attraction force. Under the same current conditions, compared with similar products, this electromagnetic lock exhibits a stronger attraction force, thereby reducing the number of coil turns and effectively achieving the purpose of energy saving.

[0018] 3. By adding an emergency unlocking component, this utility model provides a mechanical unlocking method in the event of electromagnetic coil failure or power failure, which greatly improves the emergency response capability and reliability of the electromagnetic lock. Attached Figure Description

[0019] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 4 This is a schematic diagram showing the cooperation between the armature latch and the fixed iron core of this utility model;

[0024] Figure 5 This is a structural schematic diagram of the emergency unlocking component of this utility model.

[0025] Reference numerals in the attached drawings: 1-outer shell, 2-lock seat, 3-coil frame, 4-fixed iron core, 5-armature lock tongue, 6-electromagnetic coil, 7-auxiliary lever, 8-first elastic element, 9-impact iron post, 10-limit lever, 11-first chamber, 12-second chamber, 13-emergency unlocking element, 14-third elastic element, 15-U-shaped lever, 16-guide rod, 17-guide hole, 18-lock tongue fixing bracket, 19-buckle, 20-second elastic element. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] See Figures 1-5 This utility model provides an electromagnetic lock for opening a safe without vibration, comprising a housing 1, a lock base 2, an electromagnet lock, and a vibration-resistant opening assembly. The lock base 2 is installed inside the housing 1. The electromagnet lock includes a coil frame 3, a fixed iron core 4, and an armature latch 5. The coil frame 3 is fixedly disposed inside the lock base 2, and an electromagnetic coil 6 is wound around the outer side of the coil frame 3. The fixed iron core 4 is fixedly disposed inside the coil frame 3. The lower end of the armature latch 5 passes through the fixed iron core 4 and slides with the fixed iron core 4. The upper end of the armature latch 5 extends out of the outer shell 1, and an auxiliary lever 7 is fixedly sleeved in the middle of the armature latch 5 to prevent the armature latch 5 from sliding out of the outer shell 1. The lock seat 2 is provided with a first elastic element 8 that keeps the armature latch 5 extending out of the outer shell 1. The anti-vibration opening component is disposed in the lock seat 2 and located below the armature latch 5. When subjected to external vibration, the anti-vibration opening component abuts against the lower end of the armature latch 5 to prevent the armature latch 5 from moving downward, and can be reset by the second elastic element 20.

[0028] This electromagnetic lock employs a design where the armature latch 5 penetrates and fixes the iron core 4, significantly increasing the contact area and thus enhancing the attraction force. Under the same current conditions, compared to similar products, this electromagnetic lock exhibits stronger attraction, thereby reducing the number of coil turns and effectively achieving energy savings. Its specific working principle is as follows:

[0029] Under normal conditions, when the electromagnetic coil 6 is de-energized, the elastic force of the first elastic element 8 pushes the armature latch 5 outward to engage with the lock hole of the safe, thus securing the safe firmly. At this time, the auxiliary lever 7 in the middle of the armature latch 5 effectively limits excessive outward extension, ensuring that the armature latch 5 does not detach from the outer casing 1, maintaining the stability and reliability of the electromagnetic lock structure. When the electromagnetic coil 6 is energized, the strong magnetic force generated by the electromagnet structure composed of the electromagnetic coil 6 and the fixed iron core 4 quickly attracts the armature latch 5, causing it to overcome the elastic force of the first elastic element 8 and move inward, thereby unlocking the safe. During use, when faced with external vibrations such as building vibrations or human impacts, the anti-vibration opening component operates, abutting against the lower end of the armature latch 5, effectively preventing the armature latch 5 from moving downward, thus ensuring the electromagnetic lock remains locked and effectively preventing accidental unlocking. After the vibration ends, the anti-vibration opening component resets under the action of the second elastic element 20, no longer abutting against the armature latch 5, and the electromagnetic lock returns to normal operation. Compared to traditional electromagnetic locks, the anti-vibration opening component, a mechanical means of preventing accidental opening, effectively avoids the risk of relying solely on elastic elements for locking. It solves the problem of traditional electromagnetic locks potentially unlocking accidentally in vibration environments, thereby improving the security of the safe and providing strong protection for the user's personal property.

[0030] In one specific implementation, see Figure 3 The vibration-damping opening assembly includes an impact iron post 9 and a limiting lever 10. The limiting lever 10 is located below the armature latch 5 and is rotatably disposed within the lock seat 2. The upper and lower sides of the distal end of the limiting lever 10 are respectively provided with a first chamber 11 and a second chamber 12. The impact iron post 9 and the second elastic element 20 are respectively placed in the first chamber 11 and the second chamber 12. The two ends of the second elastic element 20 abut against the limiting lever 10 and the inner wall of the lock seat 2, respectively. The proximal end of the limiting lever 10 is located below the armature latch 5 and can abut against the lower end of the armature latch 5.

[0031] By rotatably mounting the limiting lever 10 within the lock seat 2 and installing it below the armature bolt 5, and installing the impact iron column 9 and the second elastic element 20 in the first chamber 11 and second chamber 12 on the upper and lower sides of the distal end of the limiting lever 10 respectively, when subjected to external vibration, the impact iron column 9 displaces and falls downward under gravity, generating an impact that applies a downward force to the distal end of the limiting lever 10. This causes the limiting lever 10 to rotate, thereby causing the proximal end of the limiting lever 10 to tilt upward and abut against the lower end of the armature bolt 5, forming an effective obstruction to prevent accidental unlocking and ensuring that the electromagnetic lock remains locked. After the vibration ends, the elastic force of the second elastic element 20 provides a restoring force to the limiting lever 10, allowing the electromagnetic lock to return to normal operation without affecting the normal unlocking function.

[0032] In one specific implementation, see Figure 2 and Figure 5 It also includes an emergency unlocking component 13, which is slidably disposed in the lock seat 2 and is provided with a third elastic element 14 that can reset the emergency unlocking component 13. A U-shaped lever 15 is provided on one side of the emergency unlocking component 13, the armature bolt 5 is located in the opening of the U-shaped lever 15, and the U-shaped lever 15 is located above the auxiliary lever 7.

[0033] By adding an emergency unlocking component 13, a mechanical unlocking method is provided in case of electromagnetic coil 6 failure or power outage, greatly improving the emergency response capability and reliability of the electromagnetic lock. Specifically, when manual unlocking is required, a lock-picking tool is inserted into the safe and pressed down on the emergency unlocking component 13. The U-shaped lever 15 on it moves downward and presses down the auxiliary lever 7, allowing the armature bolt 5 to move downward, thus completing the unlocking. Under the elastic force of the third elastic element 14, the emergency unlocking component 13 can automatically reset after use, ensuring that the electromagnetic lock can quickly return to normal operation when power is restored or electromagnetic coil 6 restarts, providing a more comprehensive and reliable guarantee for the safety and reliability of the electromagnetic lock.

[0034] In one specific implementation, see Figure 3 and Figure 5 The first elastic element 8, the second elastic element 20, and the third elastic element 14 are all return springs. The first elastic element 8 is sleeved on the armature lock tongue 5, and the two ends of the first elastic element 8 abut against the auxiliary lever 7 and the coil frame 3, respectively. The emergency unlocking component 13 is provided with a guide rod 16 below it. The lock seat 2 is provided with a guide hole 17 that cooperates with the guide rod 16. The third elastic element 14 is sleeved on the guide rod 16, and the two ends of the third elastic element 14 abut against the emergency unlocking component 13 and the lock seat 2, respectively.

[0035] The first elastic element 8, the second elastic element 20, and the third elastic element 14 all use return springs, which are simple in structure, reliable in use, and reduce manufacturing costs and assembly difficulty. The first elastic element 8 is sleeved on the armature latch 5, with both ends abutting against the auxiliary lever 7 and the coil frame 3, directly driving the armature latch 5 to extend outward and providing a stable and reliable return force. The third elastic element 14 is sleeved on the guide rod 16 of the emergency unlocking component 13, and the guide rod 16 is inserted into the guide hole 17 for guidance, ensuring the stability of the emergency unlocking component 13 during use.

[0036] In one specific implementation, see Figure 3 The armature latch 5 is fitted with a latch fixing bracket 18 on the upper part of the auxiliary lever 7. The latch fixing bracket 18 is located inside the outer shell 1 and is detachably connected to the lock seat 2.

[0037] The latch fixing bracket 18 is detachably connected to the lock seat 2, which reflects the modular design. This makes the installation process of the armature latch 5 simpler and faster, and also makes maintenance easier, which is beneficial to use.

[0038] In one specific embodiment, the outer casing 1 and the lock seat 2 are fixed together by screws.

[0039] Similar products use machine riveting, which is not only complex but also costly. In contrast, the outer shell 1 and lock base 2 of this electromagnetic lock are firmly fixed with screws, which is simple in structure, easy to assemble, and effectively improves production efficiency and economy.

[0040] In one specific implementation, see Figure 2 The back of the lock seat 2 is provided with a buckle 19 for securing the power cord.

[0041] The power cord is connected to the end of the electromagnetic coil 6 to supply power to the electromagnetic coil 6 and generate magnetic force. By fixing the power cord to the buckle 19, the power cord is prevented from becoming loose, avoiding the mess of the power cord and making the whole device look more beautiful.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A shock-resistant opening electromagnetic lock for a safe, characterized in that, The system includes a housing (1), a lock base (2), an electromagnet lock, and a vibration-damping opening assembly. The lock base (2) is installed inside the housing (1). The electromagnet lock includes a coil frame (3), a fixed iron core (4), and an armature latch (5). The coil frame (3) is fixedly installed inside the lock base (2). An electromagnetic coil (6) is wound around the outside of the coil frame (3). The fixed iron core (4) is fixedly installed inside the coil frame (3). The lower end of the armature latch (5) passes through the fixed iron core (4) and slides with it. The upper end of the armature latch (5)... The end extends out of the outer shell (1), and an auxiliary paddle (7) is fixedly sleeved in the middle of the armature latch (5) to prevent the armature latch (5) from sliding out of the outer shell (1). The lock seat (2) is provided with a first elastic element (8) to keep the armature latch (5) extending out of the outer shell (1). The anti-vibration opening component is set in the lock seat (2) and located below the armature latch (5). When subjected to external vibration, the anti-vibration opening component abuts against the lower end of the armature latch (5) to prevent the armature latch (5) from moving downward, and can be reset by the second elastic element (20).

2. The electromagnetic lock for shockproof opening of a safe according to claim 1, characterized in that, The vibration-damping opening assembly includes an impact iron rod (9) and a limiting paddle (10). The limiting paddle (10) is located below the armature latch (5) and is rotatably disposed in the lock seat (2). The upper and lower sides of the distal end of the limiting paddle (10) are respectively provided with a first chamber (11) and a second chamber (12). The impact iron rod (9) and the second elastic element (20) are respectively placed in the first chamber (11) and the second chamber (12). The two ends of the second elastic element (20) abut against the limiting paddle (10) and the inner wall of the lock seat (2). The proximal end of the limiting paddle (10) is located below the armature latch (5) and can abut against the lower end of the armature latch (5).

3. The electromagnetic lock of claim 1 or 2, wherein the electromagnetic lock is configured to be activated by a signal from a remote control device. It also includes an emergency unlocking component (13), which is slidably disposed in the lock seat (2) and is provided with a third elastic element (14) that can reset the emergency unlocking component (13). A U-shaped lever (15) is provided on one side of the emergency unlocking component (13), the armature lock tongue (5) is located in the opening of the U-shaped lever (15), and the U-shaped lever (15) is located above the auxiliary lever (7).

4. The electromagnetic lock of claim 3, wherein the magnet is a permanent magnet. The first elastic element (8), the second elastic element (20) and the third elastic element (14) are all return springs. The first elastic element (8) is sleeved on the armature lock tongue (5), and the two ends of the first elastic element (8) abut against the auxiliary lever (7) and the coil frame (3) respectively. The emergency unlocking component (13) is provided with a guide rod (16) below it. The lock seat (2) is provided with a guide hole (17) that cooperates with the guide rod (16). The third elastic element (14) is sleeved on the guide rod (16), and the two ends of the third elastic element (14) abut against the emergency unlocking component (13) and the lock seat (2) respectively.

5. The electromagnetic lock for shockproof opening of a safe according to claim 1, characterized in that, The armature latch (5) is fitted with a latch fixing bracket (18) on the upper part of the auxiliary lever (7). The latch fixing bracket (18) is located inside the outer shell (1) and is detachably connected to the lock seat (2).

6. The electromagnetic lock of claim 1, wherein the housing is formed of a material that is resistant to vibration. The outer casing (1) and the lock seat (2) are fixed together by screws.

7. The electromagnetic lock for shockproof opening of a safe according to claim 1, characterized in that, The back of the lock seat (2) is provided with a buckle (19) for securing the power cord.

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