Mechanical opening mechanism of electromagnetic lock

Abstract

The utility model relates to the field of electromagnetic locks, and discloses an electromagnetic lock mechanical opening mechanism which comprises a lock shell, a lock cover is arranged on the upper surface of the lock shell, a switch assembly is arranged in the lock shell, an unlocking assembly is arranged in the lock shell, a protection assembly is arranged on the upper surface of the lock cover, and the switch assembly comprises an electromagnetic coil. A sliding rod is arranged on the right surface of the electromagnetic coil, a positioning plate is elastically connected to the right surface of the electromagnetic coil through a connecting spring, a positioning block is fixedly connected to the right surface of the positioning plate, and a through groove is formed in the front surface of the positioning block. According to the utility model, through the cooperative use of the unlocking assembly and the switch assembly, the device is endowed with various unlocking modes. And a key can be used for unlocking during power failure to avoid incapability of passing. When the device is aged and the key is difficult to screw, unlocking can be achieved by moving the inserted key rightwards to enable the clamping block and the locking block to be separated, delay is effectively reduced, normal order is guaranteed, and using convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic locks, in particular to a mechanical opening mechanism of an electromagnetic lock. Background Art

[0002] In modern society, electromagnetic locks are widely used in various places due to their high efficiency, convenience and safety. From access control systems in commercial buildings, to equipment protection in industrial facilities, to door lock control in smart homes, electromagnetic locks play an important role in ensuring safety and realizing intelligent management.

[0003] However, existing electromagnetic locks may have some limitations in some cases. When encountering power failure, system failure or emergency, the electromagnetic lock driven by electricity alone may not be able to open normally, thus affecting the evacuation of personnel and the emergency operation of equipment. Therefore, an electromagnetic lock mechanical opening mechanism is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an electromagnetic lock mechanical opening mechanism, which aims to improve the problem of being unable to unlock the lock during a power outage in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electromagnetic lock mechanical opening mechanism, including a lock shell, a lock cover is arranged on the upper surface of the lock shell, a switch assembly is arranged inside the lock shell, an unlocking assembly is arranged inside the lock shell, a protective assembly is arranged on the upper surface of the lock cover, the switch assembly includes an electromagnetic coil, a sliding rod is arranged on the right surface of the electromagnetic coil, the right surface of the electromagnetic coil is elastically connected to a positioning plate through a connecting spring, the right surface of the positioning plate is fixedly connected to a positioning block, and the front surface of the positioning block is provided with a through groove.

[0006] As a further description of the above technical solution:

[0007] The unlocking assembly includes a slider, one end of a compression spring is fixedly connected to the right surface of the slider, the inner wall of the slider is elastically connected to a rotating shaft 1 through a torsion spring 2, a clamping block is fixedly connected to the outer wall of the rotating shaft 1, a connecting rod is fixedly connected to the front surface of the clamping block, the connecting rod is inserted into the inner wall of the through groove, and a notch is opened on the left surface of the clamping block.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the lock shell is elastically connected to the second rotating shaft through a torsion spring, the outer wall of the second rotating shaft is fixedly connected to a lock block, the inner wall of the bottom end of the lock shell is fixedly connected to a stop block, and the protective assembly includes a protective plate, and the left surface of the protective plate is fixedly connected to one end of a positioning spring.

[0010] As a further description of the above technical solution:

[0011] The electromagnetic coil is installed at the front end of the inner wall at the bottom end of the lock shell, a connecting line is provided on the left surface of the electromagnetic coil, the sliding rod passes through and is slidably connected to the right surface of the electromagnetic coil, and the left surface of the positioning plate is fixedly connected to the right surface of the sliding rod.

[0012] As a further description of the above technical solution:

[0013] One end of the connecting spring is fixedly connected to the right surface of the electromagnetic coil, the other end of the connecting spring is fixedly connected to the left surface of the positioning plate, the slider is slidably connected to the inner wall of the bottom end of the lock shell, and the other end of the compression spring is fixedly connected to the inner wall of the right side of the lock shell.

[0014] As a further description of the above technical solution:

[0015] A keyhole is provided on the upper surface of the rotating shaft 1, and the rotating shaft 1 is rotatably connected to the inner wall of the bottom end of the slider, one end of the torsion spring 2 is fixedly connected to the inner wall of the slider, and the other end of the torsion spring 2 is fixedly connected to the outer wall of the rotating shaft 1.

[0016] As a further description of the above technical solution:

[0017] One end of the torsion spring 1 is fixedly connected to the inner wall of the lock shell, the other end of the torsion spring 1 is fixedly connected to the outer wall of the rotating shaft 2, and the rotating shaft 2 is rotatably connected to the inner wall of the bottom end of the lock shell. The right end of the front surface of the lock block is set as an arc surface, the left end of the rear surface of the blocking block is set as an inclined surface, and the rear end of the lock block is set as an L-shaped protrusion.

[0018] As a further description of the above technical solution:

[0019] The other end of the positioning spring is fixedly connected to the inner wall on the left side of the lock cover, and the protective plate passes through and is slidably connected to the upper surface of the lock cover. The protective plate is arranged in an S shape.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the coordinated use of the unlocking component and the switch component, the device is given a variety of unlocking methods. When a power outage occurs, the key can be used to unlock the device to avoid being unable to pass. When the device is aging and the key is difficult to turn, the inserted key can be moved to the right to disengage the card block and the lock block to unlock the device, which effectively reduces delays, ensures normal order, and improves convenience of use.

[0022] 2. In the utility model, by arranging a protective component on the lock cover, when the device is in an idle state, the protective plate can cover the keyhole, effectively preventing dust from accumulating in the keyhole, thereby extending the service life of the lock and reducing the maintenance cost and failure rate caused by dust blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic front view of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 It is a top view schematic diagram of the three-dimensional structure of the lock housing in the utility model;

[0025] Figure 3 It is a top view schematic diagram of the three-dimensional structure of the torsion spring 1, the torsion spring 2 and the lock housing in the utility model;

[0026] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the lock cover in the utility model.

[0027] Legend:

[0028] 1. Lock housing; 2. Lock cover; 31. Electromagnetic coil; 32. Sliding rod; 33. Positioning plate; 34. Connecting spring; 35. Positioning block; 36. Rotating shaft 1; 37. Block; 38. Connecting rod; 39. Rotating shaft 2; 311. Lock block; 312. Torsion spring 1; 313. Stop block; 314. Torsion spring 2; 41. Compression spring; 42. Sliding block; 51. Protective plate; 52. Positioning spring. 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] Reference Figure 1 - Figure 3The utility model provides an embodiment: an electromagnetic lock mechanical opening mechanism, including a lock shell 1, a lock cover 2 is arranged on the upper surface of the lock shell 1, and the lock cover 2 is installed on the upper surface of the lock shell 1 by bolts, and the two can form a closed space, which can protect the parts inside the lock shell 1, and the rear ends of the lock shell 1 and the lock cover 2 are both provided with openings, and the bolt can be inserted in the openings. A switch component is arranged inside the lock shell 1, and the switch component can control the switch of the electromagnetic lock. An unlocking component is arranged inside the lock shell 1, and the unlocking component can also control the switch of the electromagnetic lock, so that the electromagnetic lock has a variety of opening methods, and it can be convenient to unlock even in the event of a power outage. A protective component is arranged on the upper surface of the lock cover 2, and the protective component can protect the keyhole. The switch The component includes an electromagnetic coil 31, which is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The electromagnetic coil 31 can generate magnetism when energized. A sliding rod 32 is provided on the right surface of the electromagnetic coil 31. The right surface of the electromagnetic coil 31 is elastically connected to a positioning plate 33 through a connecting spring 34. The positioning plate 33 is made of metal. When the electromagnetic coil 31 generates magnetism, the positioning plate 33 will be adsorbed, and when the positioning plate 33 moves laterally, it will squeeze or compress the connecting spring 34 to generate a reaction force. A positioning block 35 is fixedly connected to the right surface of the positioning plate 33. The positioning plate 33 and the positioning block 35 will move synchronously, and a through groove is provided on the front surface of the positioning block 35.

[0031] Reference Figure 1 - Figure 3 The unlocking component includes a slider 42, and one end of a compression spring 41 is fixedly connected to the right surface of the slider 42. The inner wall of the slider 42 is elastically connected to a rotating shaft 36 through a torsion spring 2 314. When the rotating shaft 36 rotates, it squeezes the torsion spring 2 314 to generate a reaction force. A block 37 is fixedly connected to the outer wall of the rotating shaft 36. The block 37 can ensure the stability of the electromagnetic lock when it is locked. A connecting rod 38 is fixedly connected to the front surface of the block 37. The block 37 and the connecting rod 38 will move synchronously. The connecting rod 38 is inserted into the inner wall of the through groove, and a notch is opened on the left surface of the block 37.

[0032] Reference Figure 2 - Figure 4The inner wall of the lock shell 1 is elastically connected to the rotating shaft 2 39 through the torsion spring 1 312, and the outer wall of the rotating shaft 2 39 is fixedly connected to the locking block 311, and the rotating shaft 2 39 and the locking block 311 will move synchronously. The locking block 311 and the card block 37 are prior art and can be implemented by technicians in this field. Since they are prior art, they will not be described in detail in this case. The two can put the electromagnetic lock in a locked state, and the inner wall of the bottom end of the lock shell 1 is fixedly connected to the inner wall of the bottom end of the lock shell 1. The block 313 can limit the position of the locking block 311 after unlocking. After unlocking, the upper surface of the locking block 311 will contact the lower surface of the block 313. The protective component includes a protective plate 51, which can protect the rotating shaft 1 36 and prevent dust from accumulating on the rotating shaft 1 36. The left surface of the protective plate 51 is fixedly connected to one end of the positioning spring 52.

[0033] Reference Figure 1 - Figure 3 The electromagnetic coil 31 is installed at the front end of the inner wall at the bottom end of the lock shell 1. A connecting wire is set on the left surface of the electromagnetic coil 31, and the connecting wire runs through the front surface of the lock shell 1 for convenient power supply. The sliding rod 32 runs through and is slidably connected to the right surface of the electromagnetic coil 31, sliding laterally. The left surface of the positioning plate 33 is fixedly connected to the right surface of the sliding rod 32. The two will move synchronously. The sliding rod 32 can limit the movement trajectory of the positioning plate 33 to ensure that it will not deviate during lateral movement. One end of the connecting spring 34 is fixedly connected to the right surface of the positioning plate 33. When the positioning plate 33 moves to the left, it will squeeze the connecting spring 34 to generate a reaction force. The slider 42 is slidably connected to the inner wall of the bottom end of the lock shell 1, and the other end of the compression spring 41 is fixedly connected to the inner wall on the right side of the lock shell 1. When the slider 42 moves to the right, it will squeeze the compression spring 41 to generate a reaction force.

[0034] Reference Figure 1 - Figure 3The upper surface of the rotating shaft 36 is provided with a keyhole, and the key can be inserted. After the key is inserted, the rotating shaft 36 can be driven to rotate, and further drive the card block 37 to swing, so that it is separated from the lock block 311, and the limit is released. The rotating shaft 36 is rotatably connected to the inner wall of the bottom end of the slider 42, and one end of the torsion spring 314 is fixedly connected to the inner wall of the slider 42, and the other end of the torsion spring 314 is fixedly connected to the outer wall of the rotating shaft 36. When the rotating shaft 36 rotates, it will squeeze the torsion spring 314 to produce a reaction force. If the device is aged and a large force is required when the key is inserted and rotated because of the large wheelbase, the key can be moved to the right, driving the rotating shaft 36 and the slider 42 to move to the right to squeeze the compression spring 41 to produce a reaction and make the card block 311 move. The block 37 and the lock block 311 are disengaged to achieve the unlocking effect. One end of the torsion spring 1 312 is fixedly connected to the inner wall of the lock shell 1, and the other end of the torsion spring 1 312 is fixedly connected to the outer wall of the rotating shaft 2 39. When the rotating shaft 2 39 rotates, the torsion spring 1 312 will be squeezed to produce a reaction force. The rotating shaft 2 39 is rotatably connected to the inner wall of the bottom end of the lock shell 1. The right end of the front surface of the lock block 311 is set as an arc surface, and the left end of the rear surface of the card block 37 is set as an inclined surface. By squeezing the inclined surface of the card block 37, the card block 37 will rotate to release the obstruction. When the lock block 311 rotates, it can squeeze the inclined surface of the card block 37, and the lock block 311 can be plugged into the notch. The rear end of the lock block 311 is set as an L-shaped protrusion, and the L-shaped protrusion can lock the pin.

[0035] Reference Figure 1 , Figure 4 The other end of the positioning spring 52 is fixedly connected to the inner wall on the left side of the lock cover 2, and the protective plate 51 passes through and is slidably connected to the upper surface of the lock cover 2. The protective plate 51 is set to be S-shaped. When the protective plate 51 moves to the left, it will squeeze the positioning spring 52 to generate a reaction force.

[0036] Working principle: When the device is in use, if the device is in a locked state and needs to be unlocked, the electromagnetic coil 31 can be energized to generate suction, pulling the sliding rod 32, the positioning plate 33 and the positioning block 35 to move to the left. When the positioning block 35 moves to the left, it will pull the connecting rod 38, the card block 37 and the rotating shaft 1 36 to rotate with the center of the circle of the rotating shaft 1 36 as the axis. During rotation, the rotating shaft 1 36 will squeeze the torsion spring 2 314 to generate a reaction force, and the card block 37 will disengage from the locking block 311 to release the limit on the locking block 311. The locking block 311 and the rotating shaft 2 39 will rotate in the opposite direction under the force of the torsion spring 1 312 until the upper surface of the locking block 311 contacts the lower surface of the stop block 313. At this time, the device is in an unlocked state.

[0037] If the device is in a power outage state and cannot be unlocked by electromagnetic unlocking, then move the protective plate 51 to the left first to release the obstruction to the rotating shaft 36. The protective plate 51 moving to the left will squeeze the positioning spring 52 to generate a reaction force. After the obstruction to the rotating shaft 36 is released, insert the key into the keyhole and then drive the rotating shaft 36 to rotate to achieve the unlocking effect. If the device is aged and it is easy to turn it due to the long wheelbase, the key can be inserted and then moved to the right. The key moving to the right will drive the rotating shaft 36, the block 37, the connecting rod 38, the slider 42 and the torsion spring 2 314 to move to the right. The block 37 moving to the right will disengage from the lock block 311 to release the limit, and the slider 42 moving to the right will squeeze the compression spring 41 to generate a reaction force. The connecting rod 38 moving to the right will drive the positioning block 35 and the positioning plate 33 to move to the right to stretch the connecting spring 34 to generate a reaction force.

[0038] After the limit is released, the key is released and pulled out, and then the protective plate 51 is released, and the device will be reset under the influence of the reaction force of the compression spring 41, the connecting spring 34 and the positioning spring 52.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical opening mechanism for an electromagnetic lock, comprising a lock housing (1), characterized in that: A lock cover (2) is arranged on the upper surface of the lock shell (1), a switch assembly is arranged inside the lock shell (1), an unlocking assembly is arranged inside the lock shell (1), a protective assembly is arranged on the upper surface of the lock cover (2), the switch assembly comprises an electromagnetic coil (31), a sliding rod (32) is arranged on the right surface of the electromagnetic coil (31), the right surface of the electromagnetic coil (31) is elastically connected to a positioning plate (33) via a connecting spring (34), a positioning block (35) is fixedly connected to the right surface of the positioning plate (33), and a through groove is provided on the front surface of the positioning block (35).

2. The electromagnetic lock mechanical opening mechanism according to claim 1, characterized in that: The unlocking assembly comprises a slider (42), the right surface of the slider (42) is fixedly connected to one end of a compression spring (41), the inner wall of the slider (42) is elastically connected to a rotating shaft (36) via a second torsion spring (314), the outer wall of the rotating shaft (36) is fixedly connected to a clamping block (37), the front surface of the clamping block (37) is fixedly connected to a connecting rod (38), the connecting rod (38) is inserted into the inner wall of the through groove, and a notch is provided on the left surface of the clamping block (37).

3. The electromagnetic lock mechanical opening mechanism according to claim 2, characterized in that: The inner wall of the lock housing (1) is elastically connected to the second rotating shaft (39) via the first torsion spring (312); the outer wall of the second rotating shaft (39) is fixedly connected to the lock block (311); the inner wall of the bottom end of the lock housing (1) is fixedly connected to the block (313); the protective assembly comprises a protective plate (51); the left surface of the protective plate (51) is fixedly connected to one end of a positioning spring (52).

4. The electromagnetic lock mechanical opening mechanism according to claim 1, characterized in that: The electromagnetic coil (31) is installed at the front end of the inner wall at the bottom end of the lock housing (1), a connecting wire is provided on the left surface of the electromagnetic coil (31), the sliding rod (32) penetrates and is slidably connected to the right surface of the electromagnetic coil (31), and the left surface of the positioning plate (33) is fixedly connected to the right surface of the sliding rod (32).

5. The electromagnetic lock mechanical opening mechanism according to claim 2, characterized in that: One end of the connecting spring (34) is fixedly connected to the right surface of the electromagnetic coil (31), the other end of the connecting spring (34) is fixedly connected to the left surface of the positioning plate (33), the sliding block (42) is slidably connected to the inner wall of the bottom end of the lock housing (1), and the other end of the compression spring (41) is fixedly connected to the inner wall on the right side of the lock housing (1).

6. The electromagnetic lock mechanical opening mechanism according to claim 2, characterized in that: A keyhole is provided on the upper surface of the rotating shaft (36), and the rotating shaft (36) is rotatably connected to the inner wall of the bottom end of the slider (42). One end of the torsion spring (314) is fixedly connected to the inner wall of the slider (42), and the other end of the torsion spring (314) is fixedly connected to the outer wall of the rotating shaft (36).

7. The electromagnetic lock mechanical opening mechanism according to claim 3, characterized in that: One end of the torsion spring 1 (312) is fixedly connected to the inner wall of the lock housing (1), and the other end of the torsion spring 1 (312) is fixedly connected to the outer wall of the rotating shaft 2 (39). The rotating shaft 2 (39) is rotatably connected to the inner wall of the bottom end of the lock housing (1). The right end of the front surface of the locking block (311) is set as an arc surface, the left end of the rear surface of the clamping block (37) is set as an inclined surface, and the rear end of the locking block (311) is set as an L-shaped protrusion.

8. The electromagnetic lock mechanical opening mechanism according to claim 3, characterized in that: The other end of the positioning spring (52) is fixedly connected to the inner wall on the left side of the lock cover (2), and the protective plate (51) passes through and is slidably connected to the upper surface of the lock cover (2), and the protective plate (51) is arranged in an S shape.

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