Electromagnetic lock driving mechanism and electromagnetic lock device

Abstract

The utility model discloses an electromagnetic lock driving mechanism and an electromagnetic lock device, the electromagnetic driving mechanism comprises a driving seat, a magnetic conductive tube and a driving mechanism, the magnetic conductive tube is provided with a coil connected with a control circuit board, a magnetic bar is arranged in the magnetic conductive tube, the magnetic bar is provided with a magnetic breaking end, the magnetic breaking end is provided with a magnetic breaking mechanism, and the magnetic breaking mechanism is connected with the magnetic conductive tube. The magnetic breaking mechanism comprises a sleeve matched with the magnetic breaking end and a non-magnetic bar coaxial with the magnetic bar, the sleeve is provided with a cavity matched with the magnetic bar and a through hole allowing the non-magnetic bar to penetrate through the cavity, and when the coil is powered off, the magnetic breaking mechanism eliminates residual magnetism on the surface of the magnetic bar. When the coil is powered off, the magnetic gap between the magnetic bar and the sleeve can instantly disconnect the magnetic field and drive the mechanism to move, and the remaining residual magnetism is isolated through the non-magnetic bar and pierces the residual magnetism attached to the surface of the magnetic bar, so that the residual magnetism is eliminated, the efficiency of driving the machine can be improved, and the energy loss is reduced. Meanwhile, the aluminum core wire is used for replacing a copper wire, the same effect is achieved, and cost can be saved.

Description

Technical Field

[0001] This utility model relates to the field of electronic lock technology, and in particular to an electromagnetic lock drive mechanism and an electromagnetic lock device. Background Technology

[0002] In specific locations, to prevent unauthorized or unauthorized personnel from entering and improve security, electronic electromagnetic locks are typically installed at the entrances and exits of gated communities or unit doors. When used, an authorized electronic card is read and verified, and the door opens by de-energizing the electromagnet and releasing the magnetic attraction between it and a corresponding component on the door. However, existing electromagnetic locks have a long demagnetization time after the current is cut off when opening, affecting the door opening response time. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide an electromagnetic lock drive mechanism and an electromagnetic lock device. The electromagnetic lock drive mechanism can avoid the magnetic demagnetization response time when unlocking, improve the opening speed of the electromagnetic lock, and also improve the efficiency of the drive mechanism and reduce energy loss.

[0004] To solve the above-mentioned technical problems, this utility model provides an electromagnetic lock driving mechanism. The electromagnetic lock driving mechanism includes a driving mechanism, which includes a driving base and a magnetic tube disposed on the driving base. The magnetic tube is provided with a coil connected to a control circuit board. A magnetic rod is disposed inside the magnetic tube. The magnetic rod is provided with a demagnetizing end. The demagnetizing end is provided with a demagnetizing mechanism. The demagnetizing mechanism includes a sleeve that cooperates with the demagnetizing end and a non-magnetic rod coaxial with the magnetic rod. The sleeve is provided with a cavity that cooperates with the magnetic rod and a through hole for the non-magnetic rod to pass through the cavity. When the coil is de-energized, the demagnetizing mechanism eliminates the residual magnetism on the surface of the magnetic rod.

[0005] Furthermore, the surface of the demagnetizing end is conical, the cavity is conical, and the angle formed between the conical surface of the demagnetizing end and the bottom surface is smaller than the angle between the side wall and the end face of the conical cavity. When the demagnetizing end contacts and engages with the sleeve, the conical side surface of the demagnetizing end and the side surface of the conical cavity form a first magnetic gap.

[0006] Furthermore, the end face of the demagnetizing end and the bottom surface of the conical cavity form a second magnetic gap, and the first magnetic gap and the second magnetic gap are connected to form a V-shaped or U-shaped space.

[0007] Furthermore, the first magnetic gap has a V-shaped structure with an included angle of 0.5-2 degrees.

[0008] Furthermore, the non-magnetic rod and / or through hole are provided with air guide grooves.

[0009] Furthermore, the electromagnetic lock drive mechanism also includes a transmission mechanism that converts the horizontal linear motion of the drive mechanism into a lock lever motion direction perpendicular to the horizontal linear motion direction of the drive mechanism. This transmission mechanism includes a first transmission rod, one end of which is movably connected to the transmission end of the magnetic rod via a first rotating shaft. The other end of the first transmission rod is connected to a second transmission rod via a second rotating shaft. The second transmission rod is equipped with a lever that cooperates with the lock lever. The second rotating shaft is not collinear with the first and third rotating shafts. During transmission, the first transmission rod causes the second transmission rod to rotate around the third rotating shaft.

[0010] Furthermore, the magnetic rod has a movable groove at the end where it engages with the first transmission rod.

[0011] Furthermore, the electromagnetic lock drive mechanism also includes a locking rod that moves perpendicular to the direction of the magnetic rod's movement. The locking rod has a mating groove, and the lever is located in the mating groove. During operation, the lever makes the direction of the locking rod's movement perpendicular to the direction of the drive mechanism's movement.

[0012] Furthermore, the magnetic rod comprises a copper tube.

[0013] Furthermore, the non-magnetic rod and the magnetic rod have the same diameter and are fitted with a clearance fit to the inner diameter of the copper tube.

[0014] Furthermore, the control circuit board is equipped with a magnetron, and there is an electromagnetic isolation mechanism between the control circuit board and the electromagnetic lock drive mechanism.

[0015] Furthermore, the electromagnetic isolation mechanism includes a magnetic shielding plate with multiple rows of holes arranged in an alternating pattern of odd and even rows.

[0016] Furthermore, the control circuit board has two strip holes, and a fixing position for a magnetron is provided between the two strip holes. The magnetron is arranged parallel to each strip hole, and the length of the magnetron coincides with the axial evenly divided locking rod along the long line.

[0017] Furthermore, the control circuit board has a first shielding layer and a second shielding layer on the surface near the magnetic shielding plate, wherein an electrical isolation groove is provided between the first shielding layer and the second shielding layer, the second shielding layer is located directly opposite the magnetron, and a fixing position for the magnetron is provided between the two strip holes. The magnetron is arranged parallel to each strip hole, and the length of the magnetron coincides with the axial evenly divided locking rod along the long line.

[0018] This utility model also provides an electromagnetic lock driving mechanism, which includes a driving mechanism, a driving base and a magnetic tube disposed on the driving base. The magnetic tube is provided with a coil connected to a control circuit board. A magnetic rod is provided inside the magnetic tube. The magnetic rod is provided with a demagnetizing end. The demagnetizing end is provided with a demagnetizing mechanism. The demagnetizing mechanism includes a sleeve that cooperates with the demagnetizing end and a non-magnetic rod coaxial with the magnetic rod. The sleeve is provided with a cavity that cooperates with the magnetic rod and a through hole for the non-magnetic rod to pass through the cavity. When the coil is de-energized, the demagnetizing mechanism eliminates the residual magnetism on the surface of the magnetic rod.

[0019] Furthermore, the surface of the demagnetizing end is conical, the cavity is conical, and the angle formed between the conical surface of the demagnetizing end and the bottom surface is smaller than the angle between the side wall and the end face of the conical cavity. When the demagnetizing end contacts and engages with the sleeve, the conical side surface of the demagnetizing end and the side surface of the conical cavity form a first magnetic gap.

[0020] Furthermore, the end face of the demagnetizing end and the bottom surface of the conical cavity form a second magnetic gap, and the first magnetic gap and the second magnetic gap are connected to form a V-shaped or U-shaped space.

[0021] Furthermore, the first magnetic gap has a V-shaped structure with an included angle of 0.5-2 degrees.

[0022] Furthermore, the non-magnetic rod and / or through hole are provided with air guide grooves.

[0023] Furthermore, the electromagnetic lock drive mechanism also includes a transmission mechanism that converts the horizontal linear motion of the drive mechanism into a lock rod motion direction perpendicular to the horizontal linear motion direction of the drive mechanism. The transmission mechanism includes a first transmission rod, one end of which is movably connected to the transmission end of the magnetic rod via a first rotating shaft. The other end of the first transmission rod is connected to a second transmission rod via a second rotating shaft. The second transmission rod is provided with a lever that cooperates with the lock rod. The second rotating shaft is not collinear with the first rotating shaft and the third rotating shaft. During transmission, the first transmission rod causes the second transmission rod to rotate around the third rotating shaft.

[0024] Furthermore, the magnetic rod has a movable groove at the end where it engages with the first transmission rod.

[0025] Furthermore, the electromagnetic lock drive mechanism also includes a locking rod that moves perpendicular to the direction of the magnetic rod's movement. The locking rod has a mating groove, and the lever is located in the mating groove. During operation, the lever makes the direction of the locking rod's movement perpendicular to the direction of the drive mechanism's movement.

[0026] Furthermore, the magnetic rod comprises a copper tube.

[0027] Furthermore, the non-magnetic rod and the magnetic rod have the same diameter and are fitted with a clearance fit to the inner diameter of the copper tube.

[0028] Furthermore, the control circuit board is equipped with a magnetron, and there is an electromagnetic isolation mechanism between the control circuit board and the electromagnetic lock drive mechanism.

[0029] Furthermore, the electromagnetic isolation mechanism includes a magnetic shielding plate with multiple rows of holes arranged in an alternating pattern of odd and even rows.

[0030] Furthermore, the control circuit board has two strip holes, and a fixing position for a magnetron is provided between the two strip holes. The magnetron is arranged parallel to each strip hole, and the length of the magnetron coincides with the axial evenly divided locking rod along the long line.

[0031] Furthermore, the control circuit board has a first shielding layer and a second shielding layer on the surface near the magnetic shielding plate, wherein an electrical isolation groove is provided between the first shielding layer and the second shielding layer, the second shielding layer is located directly opposite the magnetron, and a fixing position for the magnetron is provided between the two strip holes. The magnetron is arranged parallel to each strip hole, and the length of the magnetron coincides with the axial evenly divided locking rod along the long line.

[0032] This utility model relates to an electromagnetic lock drive mechanism and an electromagnetic lock. The electromagnetic lock drive mechanism includes a drive mechanism comprising a drive base and a magnetic tube disposed on the drive base. The magnetic tube has a coil connected to a control circuit board. A magnetic rod is disposed within the magnetic tube, and the magnetic rod has a demagnetizing end. The demagnetizing end has a demagnetizing mechanism, which includes a sleeve that mates with the demagnetizing end and a non-magnetic rod coaxial with the magnetic rod. The sleeve has a cavity that mates with the magnetic rod and a through hole through which the non-magnetic rod passes. When the coil is de-energized, the demagnetizing mechanism eliminates residual magnetism on the surface of the magnetic rod. When the coil is de-energized, the magnetic gap between the magnetic rod and the sleeve instantly breaks the magnetic field, causing the drive mechanism to move. The remaining residual magnetism is isolated by the non-magnetic rod and punctures the residual magnetism attached to the surface of the magnetic rod, thereby eliminating residual magnetism. This improves the efficiency of the drive mechanism, reduces energy loss, and also reduces the demagnetizing response time during unlocking, increasing the opening speed of the electromagnetic lock. Simultaneously, using aluminum core wire instead of copper core wire achieves the same power and effect as using copper core wire at the same operating current and number of coils, thus saving costs. Furthermore, the electromagnetic isolation mechanism between the control circuit board and the electromagnetic lock drive mechanism effectively blocks the electromagnetic interference generated by the coils during operation, preventing it from affecting the magnetron and causing control failure of the electromagnetic lock drive mechanism. In addition, the control circuit board has an electrical isolation groove, such as a U-shaped structure, corresponding to the magnetron position. This forms two independent first and second shielding layers on the side away from the magnetron, further enhancing electromagnetic shielding and isolation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of this utility model, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of an embodiment of an electromagnetic lock drive mechanism.

[0035] Figure 2 This is an exploded view of an embodiment of the electromagnetic lock drive mechanism.

[0036] Figure 3 This is a schematic diagram of an embodiment of the drive mechanism and transmission mechanism.

[0037] Figure 4 Another structural schematic diagram of the drive mechanism and transmission mechanism.

[0038] Figure 5 This is a schematic diagram of the drive mechanism and transmission mechanism from another perspective.

[0039] Figure 6 This is a schematic diagram of an embodiment of the demagnetizing mechanism.

[0040] Figure 7 This is an exploded view of the structure of an embodiment of the demagnetizing mechanism.

[0041] Figure 8 for Figure 7 Enlarged schematic diagram of part A in the middle.

[0042] Figure 9 This is a schematic diagram of the orthographic projection structure of the drive mechanism and transmission mechanism.

[0043] Figure 10 This is an exploded view of another embodiment of the electromagnetic lock device.

[0044] Figure 11 This is a schematic diagram of the control circuit board structure.

[0045] Figure 12 This is a schematic diagram of the orthographic projection structure of an embodiment of the magnetic isolation plate.

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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 this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] It should be understood that, in the description of this utility model embodiments, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the utility model product is in use. These terms are only for the purpose of simplifying the description of this utility model and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of this utility model. They are only used to explain the relative positional relationships and movement of the components shown in the accompanying drawings. When this specific posture changes, the directional indication may also change accordingly.

[0049] Furthermore, in this utility model, ordinal numbers such as "first" and "second" are used only for distinguishing purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features referred to as "first" and "second" may explicitly or implicitly indicate at least one of those technical features. In this utility model description, "multiple" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal connection of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] The controllers and control circuits involved in this utility model are conventional control technologies or units for those skilled in the art. For example, the control circuit of the controller can be implemented by those skilled in the art using existing technologies, such as simple programming. Software or programs that cooperate with hardware to achieve control results are also involved. Unless otherwise described in detail, the software or program control process is based on existing technology or conventional technology for those skilled in the art. The power supply also uses existing technology in the art. Furthermore, the main utility model's technical point lies in the improvement of the mechanical device; therefore, this utility model will not describe the specific circuit control relationships and circuit connections in detail.

[0052] like Figures 1-9 As shown, this utility model provides an embodiment of an electromagnetic lock drive mechanism.

[0053] The electromagnetic lock drive mechanism includes a drive mechanism 2 and a transmission mechanism 3. One end of the transmission mechanism 3 is movably connected to the drive mechanism 2, and the other end is movably connected to the locking rod 4. The drive mechanism 2 drives the transmission mechanism 3 to move, thereby moving the locking rod 4. In this embodiment, the movement direction of the drive mechanism 2 is perpendicular to the movement direction of the locking rod 4, that is, the transmission mechanism 3 converts the horizontal linear movement of the drive mechanism 2 into a movement direction of the locking rod 4 that is perpendicular to the horizontal linear movement direction of the drive mechanism 2. The drive mechanism 2 includes a drive base 21 and a magnetic tube 23 disposed on the drive base 21. The magnetic tube 23 is provided with a coil 22 electrically connected to the control circuit board 5. A magnetic rod 24 is disposed inside the magnetic tube 23. One end of the magnetic rod 24 is provided with a rotating shaft 27 and a movable groove 242 movably connected to the transmission mechanism 3, and the other end is provided with a non-magnetic rod 25. The non-magnetic rod 25 is coaxially arranged with the magnetic rod 24. A demagnetizing mechanism is provided at the mating end of the non-magnetic rod 25 and the magnetic rod 24. The demagnetizing mechanism includes a magnetic rod... A sleeve 26 is fitted to the demagnetizing end 241 of the magnetic rod 24. The sleeve 26 is located inside the magnetic tube 23 and fixed to the drive seat 21. The sleeve 26 has a conical cavity 261 that mates with the magnetic rod 24 and a through hole 262 through which a non-magnetic rod 25 can pass. That is, the demagnetizing end 241 of the magnetic rod 24 has a conical cavity 261. When the sleeve 26 contacts the magnetic rod 24, the conical surface of the demagnetizing end 241 and the surface of the conical cavity 261 only make contact near the opening of the conical cavity 261. The side of the demagnetizing end 241 forms a first magnetic gap A1 with the surface of the conical cavity 261, and the end face of the demagnetizing end 241 forms a second magnetic gap A2 with the bottom surface of the conical cavity 261. That is, the angle α formed by the conical surface and bottom surface of the demagnetizing end 241 is smaller than the angle b between the side wall and end face of the conical cavity 261. A first magnetic gap A1 exists between the side wall of the mating conical cavity 261 and the conical surface of the demagnetizing end 241. This first magnetic gap A1 communicates with the second magnetic gap A2 to form a V-shaped or U-shaped space. The first magnetic gap A1 can be a V-shaped structure as needed, with an angle between 0.5 and 2 degrees. The angle c can also be set as needed; in this embodiment, the angle c is set to 1 degree. In this embodiment, the drive seat 21 and the sleeve 26 are made of magnetically conductive materials, such as iron and its alloys. The lock body 1, lock rod 4, first rotating shaft 30, first transmission rod 31, second transmission rod 32, and lever 33 are made of non-magnetic conductors, such as non-magnetic stainless steel. The lock body 1 is made of non-magnetic aluminum alloy. The sleeve 26, magnetic tube 23, drive seat 21, and magnetic rod 24 are made of magnetic conductors. The first transmission rod 31 and the first rotating shaft 30 can be made of non-magnetic or magnetic materials.

[0054] When coil 22 is energized, magnetic rod 24 on drive mechanism 2 contacts sleeve 26. At this time, locking rod 4 is in the extended state. After power is cut off, under the reset action of spring (not shown in the figure), such as a torsion spring on the third rotating shaft 321, the locking rod 4 retracts, and magnetic rod 24 and non-magnetic rod 25 move to the left. Due to the presence of a demagnetizing mechanism, at the moment of power cut-off, the first magnetic gap A1 and the second magnetic gap A2 cause magnetic rod 24 to be magnetically disconnected instantly. The remaining residual magnetism is isolated by non-magnetic rod 25 and punctures the residual magnetism attached to the surface of magnetic components such as sleeve 26, magnetic tube 23, drive seat 21, and magnetic rod 24, thereby eliminating the residual magnetism and avoiding its influence on drive mechanism 2.

[0055] Because of the demagnetizing mechanism, the first magnetic gap A1 and the second magnetic gap A2 instantly demagnetize the magnetic rod 24 upon power failure. The remaining residual magnetism is isolated by the non-conductive rod 25, which punctures the residual magnetism attached to the surface of the magnetic rod 24, thus eliminating the residual magnetism. The existence of the first magnetic gap A1 and the second magnetic gap A2 allows for a shorter magnetic demagnetizing time, avoiding the influence of residual magnetism on the drive mechanism 2.

[0056] During installation, the non-magnetic rod 25 passes through the through hole 262. The through hole 262 is coaxial with the non-magnetic rod 25, the magnetic rod 25, and the magnetic tube 23. The non-magnetic rod 25, in conjunction with the through hole 262, serves as a guide, ensuring that the magnetic rod 24 experiences minimal resistance during coil 22 energization and de-energization. If necessary, the non-magnetic rod 25 and / or the through hole 262 may be provided with air guide grooves (not shown in the attached diagram) to prevent noise or pressure buildup during magnetic rod 24 movement, which could prolong the execution response time and affect the switch / lock response speed.

[0057] In this embodiment, the conical surfaces of the conical cavity 261 and the demagnetizing end 241 adopt a conical structure, which facilitates processing. The cross-section of the conical cavity 261 along its length is V-shaped. The magnetic tube 23 includes a copper tube, and the magnetic rod 24 is fitted with the inner diameter of the copper tube with a clearance. The non-magnetic rod 25 includes a non-magnetic stainless steel material, which can play a role in magnetic isolation. When the magnetic rod 24 is pushed to the left under the action of the spring, the non-magnetic rod 25 will break the magnetic field remaining on the surface of the magnetic rod 24, eliminating the residual magnetism attached to the magnetic rod 24, the drive seat 21, the magnetic tube 23, and the sleeve 26. The demagnetizing end of the magnetic rod 24 and the sleeve 26 are fitted with a double V-shaped structure. When the coil 22 is energized, after the magnetic rod 24 moves to the rightmost side, the demagnetizing end and the sleeve 26 are fitted together, and the two V-shaped structures are closed. The first magnetic gap A1 and the second magnetic gap A2 form a V-shaped space. When coil 22 is electrically disconnected, magnetic rod 24 slides to the left, breaking the magnetic field. The remaining residual magnetism is isolated and punctured by non-conductive rod 25, thus eliminating residual magnetism. This improves the efficiency of the driving mechanism and reduces energy loss. Furthermore, because residual magnetism can be eliminated, aluminum core wire can be used instead of copper core wire. At the same operating current and number of coils, the same power and effect can be achieved as with copper core wire, thereby saving costs.

[0058] The transmission mechanism 3 includes a first transmission rod 31, one end of which is movably connected to the magnetic rod 24 via a first rotating shaft 30. The other end of the first transmission rod 31 is connected to a second transmission rod 32 via a second rotating shaft 322. During transmission, the first transmission rod 31 causes the second transmission rod 32 to rotate around the third rotating shaft 321. The end of the magnetic rod 24 that mates with the first transmission rod 31 is provided with a movable groove 242. One end of the first transmission rod 31 is installed in the movable groove 242. Since the movable groove 242 and the magnetic rod 24 are on the same axis, the force acts in the same direction during transmission, thus improving the torque efficiency of the second transmission rod 32. The second rotating shaft 322 is not collinear with the first rotating shaft 30 and the third rotating shaft 321. The second transmission rod 32 is provided with a lever 33 that cooperates with the locking rod 4. That is, the locking rod 4 is provided with a mating groove 41. The lever 33 is located in the mating groove 41 and can be movably connected. The third rotating shaft 321 is installed on the lock body 1 and its position is fixed. When working, the first rotating shaft 30 moves in the horizontal direction, and the second rotating shaft 322 rotates with respect to the third rotating shaft 321.

[0059] like Figure 10-12 As shown, this utility model also provides an embodiment of an electromagnetic lock drive mechanism.

[0060] The control circuit board 5 is equipped with a magnetron 52. An electromagnetic isolation mechanism exists between the control circuit board 5 and the electromagnetic lock drive mechanism. This electromagnetic isolation mechanism includes a magnetic shielding plate 7, which has multiple rows of holes arranged in an alternating odd-even row layout. Specifically, the magnetic shielding plate 7 has multiple rows of staggered hole groups, each row including multiple staggered holes 72. Adjacent staggered hole groups are staggered, meaning each staggered hole in the odd-even row staggered hole group is arranged alternately. The staggered holes 72 between the 1st and 2nd rows, the 2nd and 3rd rows, and the 3rd and 4th rows are staggered. This staggered distribution means that a staggered hole 72 in one row of an adjacent row is between two staggered holes 72 in another adjacent row. The magnetic shielding plate 7 has mounting holes 71 and includes a magnetic plate. The control circuit board 5 may have clearance holes 50 for the lock rod 4 to pass through. As needed, the control circuit board 5 has two rectangular holes 53, and a fixing position (not shown in the figure) for a magnetron 52 is provided between the two rectangular holes 53. The magnetron 52 is arranged parallel to each rectangular hole 53, and the length of the magnetron 53 along the long line CC coincides with the axial evenly divided locking rod. The surface of the control circuit board 5 near the magnetic shielding plate 7 is provided with a first shielding layer 51 and a second shielding layer 55, wherein an electrical isolation groove 54 is provided between the first shielding layer 51 and the second shielding layer 55, and the second shielding layer 55 is located on the other side of the control circuit board 5 opposite the magnetron 52.

[0061] During operation, the electromagnetic field generated by coil 22 affects the magnetron 52 and control circuit on the control circuit board 4. By having an electromagnetic isolation mechanism between the control circuit board 5 and the electromagnetic lock drive mechanism, the electromagnetic field generated by coil 22 can be effectively blocked from affecting the magnetron, thus preventing the electromagnetic lock drive mechanism from malfunctioning. Furthermore, the control circuit board has an electrical isolation groove 54, such as a U-shaped structure, corresponding to the magnetron position. This groove forms two independent first and second shielding layers on the side away from the magnetron, further enhancing electromagnetic isolation.

[0062] like Figure 1-9 As shown, this utility model also provides an embodiment of an electromagnetic lock.

[0063] The electromagnetic lock includes a lock body 1 with a cavity and an electromagnetic lock drive mechanism located in the cavity. The electromagnetic lock drive mechanism includes a drive mechanism 2 and a transmission mechanism 3. One end of the transmission mechanism 3 is movably connected to the drive mechanism 2, and the other end is movably connected to the lock rod 4. The drive mechanism 2 drives the transmission mechanism 3 to move, thereby driving the lock rod 4 to move. In this embodiment, the direction of movement of the drive mechanism 2 is perpendicular to the direction of movement of the lock rod 4. That is, the transmission mechanism 3 converts the horizontal linear movement of the drive mechanism 2 into the direction of movement of the lock rod 4 being perpendicular to the horizontal linear movement of the drive mechanism 2. The drive mechanism 2 includes a drive base 21 and a magnetic tube 23 disposed on the drive base 21. The magnetic tube 23 has a coil 22 electrically connected to a control circuit board (not shown in the figure). A magnetic rod 24 is disposed inside the magnetic tube 23. One end of the magnetic rod 24 has a rotating shaft 27 and a movable groove 242 movably connected to the transmission mechanism 3, and the other end has a non-magnetic rod 25. The non-magnetic rod 25 is coaxially arranged with the magnetic rod 24. A demagnetizing mechanism is provided at the mating end of the non-magnetic rod 25 and the magnetic rod 24. The demagnetizing mechanism includes... A sleeve 26, which mates with the demagnetizing end 241 of the magnetic rod 24, is disposed within the magnetic tube 23 and fixed to the drive seat 21. The sleeve 26 has a conical cavity 261 that mates with the magnetic rod 24 and a through hole 262 through which a non-magnetic rod 25 can pass. Specifically, the demagnetizing end 241 of the magnetic rod 24 has a conical cavity 261. When the sleeve 26 contacts the magnetic rod 24, the conical surface of the demagnetizing end 241 only contacts the surface of the conical cavity 261 near the opening. A first magnetic gap A1 is formed between the side of the demagnetizing end 241 and the surface of the conical cavity 261, and a second magnetic gap A2 is formed between the end face of the demagnetizing end 241 and the bottom surface of the conical cavity 261. That is, the angle α formed by the conical surface and bottom surface of the demagnetizing end 241 is smaller than the angle b between the side wall and end face of the conical cavity 261. A first magnetic gap A2 exists between the side wall of the mating conical cavity 261 and the conical surface of the demagnetizing end 241. This first magnetic gap A1 and the second magnetic gap A2 communicate to form a V-shaped or U-shaped space. The first magnetic gap A1 can be a V-shaped structure as needed, with an angle between 0.5 and 2 degrees. The angle c can also be set as needed; in this embodiment, the angle c is set to 1 degree. In this embodiment, the drive seat 21 and the sleeve 26 are made of magnetically conductive materials, such as iron and its alloys. The lock body 1, lock rod 4, first rotating shaft 30, first transmission rod 31, second transmission rod 32, and lever 33 are made of non-magnetic conductors, such as non-magnetic stainless steel. The lock body 1 is made of non-magnetic aluminum alloy. The sleeve 26, magnetic tube 23, drive seat 21, and magnetic rod 24 are made of magnetic conductors. The first transmission rod 31 and the first rotating shaft 30 can be made of non-magnetic or magnetic materials.

[0064] When coil 22 is energized, the magnetic rod 24 on drive mechanism 2 contacts sleeve 26. At this time, locking rod 4 is in the extended state. When the power is off, under the action of spring reset (this spring can be a torsion spring on the third rotating shaft 321, or it can be another type of spring), locking rod 4 retracts. Due to the presence of the demagnetizing mechanism, at the moment of power off, the first magnetic gap A1 and the second magnetic gap A2 cause the magnetic rod 24 to be magnetically disconnected instantaneously. The remaining residual magnetism is isolated by the non-magnetic rod 25 and punctures the residual magnetism attached to the surfaces of magnetic components such as sleeve 26, magnetic tube 23, drive seat 21, and magnetic rod 24, thus eliminating the residual magnetism. The existence of the first magnetic gap A1 and the second magnetic gap A2 allows for a shorter magnetic disconnection time, avoiding the influence of residual magnetism on drive mechanism 2.

[0065] During installation, the non-magnetic rod 25 passes through the through hole 262. The through hole 262 is coaxial with the non-magnetic rod 25, the magnetic rod 25, and the magnetic tube 23. The non-magnetic rod 25, in conjunction with the through hole 262, acts as a guide, ensuring that the magnetic rod 24 experiences minimal resistance during coil 22 energization and de-energization. If necessary, the non-magnetic rod 25 or the through hole 262 may be provided with air guide grooves (not shown in the attached diagram) to prevent noise or pressure buildup during magnetic rod 24 movement, which could prolong the execution response time and affect the switch / lock response speed.

[0066] In this embodiment, the conical surfaces of the conical cavity 261 and the demagnetizing end 241 adopt a conical structure, which facilitates processing. The cross-section of the conical cavity 261 along its length is V-shaped. The magnetic tube 23 includes a copper tube, and the magnetic rod 24 is fitted with the inner diameter of the copper tube with a clearance. The non-magnetic rod 25 includes a non-magnetic stainless steel material, which can play a role in magnetic isolation. When the magnetic rod 24 is pushed to the left under the action of the spring, the non-magnetic rod 25 breaks the magnetic field remaining on the surface of the magnetic rod 24, eliminating the residual magnetism attached to the magnetic rod 24. The demagnetizing end of the magnetic rod 24 and the sleeve 26 are fitted with a double V-shaped structure. When the coil 22 is energized, after the magnetic rod 24 moves to the rightmost side, the demagnetizing end and the sleeve 26 are fitted together, and the two V-shaped structures are closed. The first magnetic gap A1 and the second magnetic gap A2 form a V-shaped space. When coil 22 is electrically disconnected, magnetic rod 24 slides to the left, breaking the magnetic field. The remaining residual magnetism is isolated and punctured by non-conductive rod 25, thus eliminating residual magnetism. This improves the efficiency of the driving mechanism and reduces energy loss. Furthermore, because residual magnetism can be eliminated, aluminum core wire can be used instead of copper core wire. At the same operating current and number of coils, the same power and effect can be achieved as with copper core wire, thereby saving costs.

[0067] The transmission mechanism 3 includes a first transmission rod 31, one end of which is movably connected to the magnetic rod 24 via a first rotating shaft 30. The other end of the first transmission rod 31 is connected to a second transmission rod 32 via a second rotating shaft 322. During transmission, the first transmission rod 31 causes the second transmission rod 32 to rotate around the third rotating shaft 321. The end of the magnetic rod 24 that mates with the first transmission rod 31 is provided with a movable groove 242. One end of the first transmission rod 31 is installed in the movable groove 242. Since the movable groove 242 and the magnetic rod 24 are on the same axis, the force acts in the same direction during transmission, thus improving the torque efficiency of the second transmission rod 32. The second rotating shaft 322 is not collinear with the first rotating shaft 30 and the third rotating shaft 321. The second transmission rod 32 is provided with a lever 33 that cooperates with the locking rod 4. That is, the locking rod 4 is provided with a mating groove 41. The lever 33 is located in the mating groove 41 and can be movably connected. The third rotating shaft 321 is installed on the lock body 1 and its position is fixed. When working, the first rotating shaft 30 moves in the horizontal direction, and the second rotating shaft 322 rotates with respect to the third rotating shaft 321.

[0068] like Figure 10-12 As shown, this utility model also provides an embodiment of an electromagnetic lock drive mechanism.

[0069] The control circuit board 5 is equipped with a magnetron 52. An electromagnetic isolation mechanism exists between the control circuit board 5 and the electromagnetic lock drive mechanism. This electromagnetic isolation mechanism includes a magnetic shielding plate 7, which has multiple rows of holes arranged in an alternating odd-even row layout. Specifically, the magnetic shielding plate 7 has multiple rows of staggered hole groups, each row including multiple staggered holes 72. Adjacent staggered hole groups are staggered, meaning each staggered hole in the odd-even row staggered hole group is arranged alternately. The staggered holes 72 between the 1st and 2nd rows, the 2nd and 3rd rows, and the 3rd and 4th rows are staggered. This staggered distribution means that a staggered hole 72 in one row of an adjacent row is between two staggered holes 72 in another adjacent row. The magnetic shielding plate 7 has mounting holes 71 and includes a magnetic plate. The control circuit board 5 may have clearance holes 50 for the lock rod 4 to pass through. As needed, the control circuit board 5 has two rectangular holes 53, and a fixing position (not shown in the figure) for a magnetron 52 is provided between the two rectangular holes 53. The magnetron 52 is arranged parallel to each rectangular hole 53, and the length of the magnetron 53 along the long line CC coincides with the axial evenly divided locking rod. The surface of the control circuit board 5 near the magnetic shielding plate 7 is provided with a first shielding layer 51 and a second shielding layer 55, wherein an electrical isolation groove 54 is provided between the first shielding layer 51 and the second shielding layer 55, and the second shielding layer 55 is located on the other side of the control circuit board 5 opposite the magnetron 52.

[0070] During operation, the electromagnetic field generated by coil 22 affects the magnetron 52 and control circuit on the control circuit board 4. By having an electromagnetic isolation mechanism between the control circuit board 5 and the electromagnetic lock drive mechanism, the electromagnetic field generated by coil 22 can be effectively blocked from affecting the magnetron, thus preventing the electromagnetic lock drive mechanism from malfunctioning. Furthermore, the control circuit board has an electrical isolation groove 54, such as a U-shaped structure, corresponding to the magnetron position. This groove forms two independent first and second shielding layers on the side away from the magnetron, further enhancing electromagnetic shielding and isolation.

[0071] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A Electromagnetic lock drive mechanism , comprising a drive mechanism, characterized in that, The drive mechanism includes a drive base and a magnetic tube disposed on the drive base. The magnetic tube is provided with a coil connected to a control circuit board. A magnetic rod is disposed inside the magnetic tube. The magnetic rod is provided with a demagnetizing end. The demagnetizing end is provided with a demagnetizing mechanism. The demagnetizing mechanism includes a sleeve that cooperates with the demagnetizing end and a non-magnetic rod coaxial with the magnetic rod. The sleeve is provided with a cavity that cooperates with the magnetic rod and a through hole for the non-magnetic rod to pass through the cavity. When the coil is de-energized, the demagnetizing mechanism eliminates the residual magnetism on the surface of the magnetic rod.

2. The method of claim 1 Electromagnetic lock drive mechanism characterized in that The surface of the demagnetizing end is conical, and the cavity is conical. The angle formed between the conical surface of the demagnetizing end and the bottom surface is smaller than the angle between the side wall and the end face of the conical cavity. When the demagnetizing end contacts and engages with the sleeve, the conical side surface of the demagnetizing end and the side surface of the conical cavity form a first magnetic gap.

3. The method of claim 2 Electromagnetic lock drive mechanism characterized in that The end face of the demagnetizing end and the bottom surface of the conical cavity form a second magnetic gap, and the first magnetic gap and the second magnetic gap are connected to form a V-shaped or U-shaped space.

4. The method of claim 2 Electromagnetic lock drive mechanism characterized in that The first magnetic gap has a V-shaped structure.

5. As described in claim 2 Electromagnetic lock drive mechanism Its characteristics are, The included angle is between 0.5 and 2 degrees.

6. The method of claim 1 Electromagnetic lock drive mechanism characterized in that The non-magnetic rod and / or through hole are provided with air guide grooves.

7. The method of claim 1 Electromagnetic lock drive mechanism , wherein The The electromagnetic lock drive mechanism also includes A transmission mechanism that converts the horizontal linear motion of the drive mechanism into a locking rod motion direction perpendicular to the horizontal linear motion direction of the drive mechanism includes a first transmission rod whose one end is movably connected to the transmission end of a magnetic rod via a first rotating shaft, and the other end of the first transmission rod is connected to a second transmission rod via a second rotating shaft. The second transmission rod is provided with a lever that cooperates with the locking rod. The second rotating shaft is not collinear with the first rotating shaft and the third rotating shaft. During transmission, the first transmission rod causes the second transmission rod to rotate around the third rotating shaft.

8. The method of claim 7 Electromagnetic lock drive mechanism characterized in that The magnetic rod has a movable groove at the end where it mates with the first transmission rod.

9. The electromagnetic lock drive mechanism of claim 8, wherein, The The electromagnetic lock drive mechanism also includes and A locking rod that moves perpendicular to the direction of magnetic rod movement has a mating groove, and a lever is located in the mating groove. During operation, the lever makes the direction of movement of the locking rod perpendicular to the direction of movement of the drive mechanism.

10. The electromagnetic lock drive mechanism according to claim 1, characterized in that, The control circuit board is equipped with a magnetron. There is an electromagnetic isolation mechanism between the control circuit board and the electromagnetic lock drive mechanism.

11. The electromagnetic lock drive mechanism of claim 10, wherein, The Electromagnetic isolation mechanisms include magnetic shielding. The magnetic shielding plate has multiple rows of holes arranged in an alternating pattern of odd and even rows.

12. The electromagnetic lock drive mechanism of claim 10, wherein, the The control circuit board has two shaped... A magnetron is fixed between two slotted holes. The magnetron is arranged parallel to each slotted hole, and the length of the magnetron is... Evenly distributed along the long line and axis the locking rod is aligned linearly 。 13. The electromagnetic lock drive mechanism of claim 12, wherein, the Control circuit board near magnetic shield One side surface of the board is provided with a first shielding layer and a second shielding layer, wherein an electrical isolation is provided between the first shielding layer and the second shielding layer. The slot, the second shielding layer is located directly opposite the magnetron, and a fixing position for the magnetron is provided between the two shaped holes. The magnetron and each The magnetron has several parallel slots, and its length is evenly distributed along its longitudinal axis and axial direction. the locking rod is aligned linearly 。 14. An electromagnetic lock device includes a lock body with a cavity and an electromagnetic lock drive mechanism disposed in the cavity. characterized in that The electromagnetic lock drive mechanism has the electromagnetic lock drive mechanism as described in any one of claims 1-13.

Images