Electromagnetic lock driving device and electromagnetic lock

Abstract

The present invention is applicable to the technical field of locks. Disclosed in the present invention are an electromagnetic lock driving device and an electromagnetic lock. The electromagnetic lock driving device comprises a driving mechanism. The driving mechanism comprises a driving seat and a magnetically conductive tube. The magnetically conductive tube is provided with a coil connected to a control circuit. A magnetic rod is arranged in the magnetically conductive tube. The magnetic rod is provided with a demagnetizing end. The demagnetizing end is provided with a demagnetizing mechanism. The demagnetizing mechanism comprises a sleeve matching the demagnetizing end and a non-magnetically conductive rod coaxial with the magnetic rod. The sleeve is provided with a cavity matching the magnetic rod and a through hole allowing the non-magnetically conductive rod to pass through the cavity. 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, a magnetic gap between the magnetic rod and the sleeve can instantly break a magnetic field, the driving mechanism moves, and the remaining residual magnetism is isolated by means of the non-magnetically conductive rod and the residual magnetism adhering to the surface of the magnetic rod is demagnetized, to eliminate the residual magnetism, improving the efficiency of a driving machine, and reducing energy loss. In addition, using an aluminum core wire instead achieves the same effect and can save costs.

Description

Electromagnetic lock driving device and electromagnetic lock TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic lock, in particular to an electromagnetic lock driving device and electromagnetic lock. BACKGROUND

[0002] In certain places, in order to prevent unauthorized personnel or authorized personnel to enter, improve security. In general, installed in the closed area entrance, or unit door entrance installed with electronic electromagnetic lock, use through the authorized electronic card, read verification, through the electromagnetic iron power and door on the corresponding components to remove the attraction force to achieve the door. The existing electromagnetic lock in the door, the current is disconnected after the magnetic time is long, the influence of the door response time. SUMMARY

[0003] The technical problem solved by the present application is to provide an electromagnetic lock driving device and electromagnetic lock, wherein the electromagnetic lock driving device can avoid the magnetic response time when unlocking, improve the speed of electromagnetic lock door, and improve the efficiency of the driving mechanism and reduce energy loss.

[0004] In order to solve the above technical problems, the present application provides an electromagnetic lock driving device, which comprises a driving mechanism, the driving mechanism comprising a driving seat and a magnetic guide pipe provided on the driving seat, the magnetic guide pipe being provided with a coil connected with a control circuit, the magnetic guide pipe being provided with a magnetic rod, the magnetic rod being provided with a magnetic breaking end, the magnetic breaking end being provided with a magnetic breaking mechanism, the magnetic breaking mechanism comprising a sleeve matched with the magnetic breaking end and a non-magnetic rod coaxial with the magnetic rod, the sleeve being provided with a cavity matched with the magnetic rod and a through hole for the non-magnetic rod to pass through the cavity, and the magnetic breaking mechanism eliminating the residual magnetism on the surface of the magnetic rod when the coil is powered off.

[0005] Further, the surface of the magnetic breaking end is conical, the cavity is conical, and the included angle formed by the conical surface of the magnetic breaking end and the bottom surface is smaller than the included angle between the side wall of the conical cavity and the end surface. When the magnetic breaking end and the sleeve are in contact, the conical side surface of the magnetic breaking end and the conical side surface of the cavity form a first magnetic gap.

[0006] Further, the end surface of the magnetic breaking end and the bottom surface of the conical cavity form a second magnetic gap, and the first magnetic gap and the second magnetic gap communicate to form a V-shaped or U-shaped space.

[0007] Further, the first magnetic gap is V-shaped structure, and the included angle is 0.5-2 degrees.

[0008] Further, the non-magnetic rod and / or the through hole are provided with a gas guide groove.

[0009] Further, the transmission mechanism comprises a first transmission rod movably connected to the transmission end of the magnetic rod through a first rotating shaft, the other end of the first transmission rod is connected to a second transmission rod through a second rotating shaft, the second transmission rod is provided with a push rod matched with the lock rod, the second rotating shaft is non-collinear with the first rotating shaft and the third rotating shaft, and when the transmission is performed, the first transmission rod drives the second transmission rod to rotate around the third rotating shaft

[0010] Further, the magnetic rod is provided with a movable groove at the matched end of the first transmission rod.

[0011] Further, the electromagnetic lock driving device further comprises a lock rod moving perpendicularly to the movement direction of the magnetic rod, the lock rod is provided with a matched groove, the push rod is located in the matched groove, and when the lock rod is in operation, the push rod makes the movement direction of the lock rod perpendicular to the movement direction of the driving mechanism.

[0012] Further, the magnetic rod comprises a copper pipe.

[0013] Further, the non-magnetic rod is the same in diameter with the magnetic rod and is matched with the inner diameter of the copper pipe with a gap.

[0014] The application further provides an electromagnetic lock, which comprises a lock body provided with a cavity and an electromagnetic lock driving device arranged in the cavity, the electromagnetic lock driving device comprises a driving mechanism, the driving mechanism comprises a driving seat and a magnetic conducting pipe arranged in the driving seat, the magnetic conducting pipe is provided with a coil connected with a control circuit, the magnetic conducting pipe is provided with a magnetic rod, the magnetic rod is provided with a demagnetization end, the demagnetization end is provided with a demagnetization mechanism, the demagnetization mechanism comprises a sleeve matched with the demagnetization end and a non-magnetic rod coaxial with the magnetic rod, the sleeve is provided with a cavity matched with the magnetic rod and a through hole for the non-magnetic rod to pass through the cavity, and the demagnetization mechanism eliminates the residual magnetism on the surface of the magnetic rod when the coil is powered off.

[0015] Further, the surface of the demagnetization end is conical, the cavity is conical, the included angle formed by the conical surface of the demagnetization end and the bottom surface is smaller than the included angle between the side wall of the conical cavity and the end surface, and when the demagnetization end is in contact with the sleeve, the conical side surface of the demagnetization end and the side surface of the conical cavity form a first magnetic gap.

[0016] Further, the end surface of the demagnetization 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 communicated to form a V-shaped or U-shaped space.

[0017] Further, the first magnetic gap is V-shaped and the included angle is 0.5-2 degrees.

[0018] Further, the non-magnetic rod and / or the through hole is provided with a gas guide groove.

[0019] Further, the transmission mechanism comprises a first transmission rod movably connected with the transmission end of the magnetic rod through a first rotating shaft, the other end of the first transmission rod is connected with a second transmission rod through a second rotating shaft, the second transmission rod is provided with a push rod matched with the lock rod, the second rotating shaft is non-collinear with the first rotating shaft and the third rotating shaft, and when the transmission is performed, the first transmission rod drives the second transmission rod to rotate around the third rotating shaft

[0020] Further, the magnetic rod is provided with a movable groove at the matched end of the first transmission rod.

[0021] Further, the electromagnetic lock driving device further comprises a lock rod moving perpendicularly to the movement direction of the magnetic rod, the lock rod is provided with a matched groove, the push rod is located in the matched groove, and when the electromagnetic lock driving device works, the push rod makes the movement direction of the lock rod perpendicular to the movement direction of the driving mechanism.

[0022] Further, the electromagnetic lock further comprises a lock body for fixing the electromagnetic lock driving device, the lock body is provided with a mounting matched surface, and the lock body is provided with an anti-loosening fixing structure.

[0023] Further, the mounting matched surface is provided with a mounting hole, the lock body is provided with at least one fixing groove, the mounting hole is arranged in the fixing groove, the anti-loosening fixing structure is arranged in the fixing groove, the fixing structure is provided with a through hole and a bolt arranged in the through hole, after the mounting, the bolt is matched with a fixing hole arranged in the fixing groove through the through hole to fix the fixing structure and the lock body, and the end of the fixing member on the mounting hole is in abutment with the fixing structure.

[0024] Further, the fixing groove comprises two fixing grooves arranged at two ends of the lock body respectively.

[0025] Further, the fixing groove is increased in opening from inside to outside in the fixing direction.

[0026] Further, the mounting hole and the fixing hole are arranged in the same direction or perpendicularly.

[0027] Further, the side wall of the fixing groove is provided with a limiting structure in the loosening direction of the lock body.

[0028] Further, the fixing structure comprises a fixing block, the end face of the fixing block close to the mounting hole is provided with two stop strips, and a gap is arranged between the two stop strips.

[0029] Further, the end face of each stop strip is provided with an inclined surface, and the directions of the two inclined surfaces are opposite.

[0030] Further, the magnetic rod comprises a copper pipe.

[0031] Further, the non-magnetic rod and the magnetic rod are arranged in the same diameter and are matched with the inner diameter of the copper pipe in a gap.

[0032] This invention relates to an electromagnetic lock drive device and an electromagnetic lock. The electromagnetic lock drive device 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. A magnetic rod is disposed inside the magnetic tube, and the magnetic rod has a demagnetizing end. The demagnetizing end has a demagnetizing mechanism, which includes a sleeve that cooperates with the demagnetizing end and a non-magnetic rod coaxial with the magnetic rod. The sleeve has a cavity that cooperates 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 can instantly disconnect 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. At the same time, using aluminum core wire instead of copper core wire can achieve the same power and effect as using copper core wire at the same operating current and number of coils, thus saving costs. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

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

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

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

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

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

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

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

[0041] Figure 8 is an enlarged schematic diagram of part A in Figure 7.

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

[0043] Fig. 10 is a schematic diagram of an embodiment of the electromagnetic lock.

[0044] Fig. 11 is a schematic diagram of another view of an embodiment of the electromagnetic lock.

[0045] Fig. 12 is a schematic diagram of an exploded view of an embodiment of the electromagnetic lock.

[0046] Fig. 13 is a schematic diagram of another embodiment of the electromagnetic lock.

[0047] Fig. 14 is a schematic diagram of an installation structure of an embodiment of the magnetic lock device.

[0048] The purposes, functional features and advantages of the present application will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0050] It should be understood that, in the embodiments of the present application, all directional terms described, such as “upper”, “lower”, “left”, “right”, “front”, “back”, etc., indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship usually used when the product of the present application is used, and are only for the purpose of simplifying the description of the present application, and do not mean or imply that the device, element or component must have a specific orientation and specific orientation structure, and should not be understood as a limitation on the present application. It is only used to explain the relative position relationship, movement condition, etc. between the components shown in the drawings, and when the specific posture changes, the directional indication may also change accordingly.

[0051] In addition, in the present application, ordinal numbers such as “first”, “second”, etc. are only used for distinguishing purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as “first” and “second” can be explicitly or implicitly and at least one of the technical features. In the description of the present application, the meaning of “multiple” is at least two, that is, two or more, unless otherwise explicitly limited; the meaning of “at least one” is one or more.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwing" and other terms should be understood in a broad sense, for example, the relative position relationship between components can be fixed, or there can be a physically fixed connection between components, which can be detachable or integrated structure, which can be mechanical connection or electrical signal connection, which can be directly connected or indirectly connected through intermediate media or components, which can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited in the specification, which cannot realize the corresponding function or effect when understood in other ways, and for ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] The controller and control circuit that the present application can involve are the control technology or unit of the skilled person in the art, for example, the control circuit of the controller can be realized by the ordinary skilled person in the art by using the existing technology, such as simple programming. The software or program involved in cooperation with the hardware to realize the control result, such as the control process of the software or program not described in detail in the specification, belongs to the use of existing technology or the conventional technology of the ordinary skilled person in the art. The power supply also uses the existing technology in the art, and the main technical point of the present application is to improve the mechanical device, so the specific circuit control relationship and circuit connection of the present application are not described in detail.

[0054] As shown in Figures 1-9, the present application provides an embodiment of an electromagnetic lock driving device.

[0055] The electromagnetic lock driving device comprises a driving mechanism 2 and a transmission mechanism 3, one end of the transmission mechanism 3 is movably connected with the driving mechanism 2, and the other end is movably connected with a lock rod 4, the driving mechanism 2 drives the transmission mechanism 3 to move to drive the lock rod 4 to move, in the embodiment, the movement direction of the driving mechanism 2 is perpendicular to the movement direction of the lock rod 4, that is, the transmission mechanism 3 converts the horizontal linear movement of the driving mechanism 2 into the movement direction of the lock rod 4 which is perpendicular to the horizontal linear movement direction of the driving mechanism 2. The driving mechanism 2 comprises a driving seat 21 and a magnetic guide pipe 23 arranged on the driving seat 21, the magnetic guide pipe 23 is provided with a coil 22 electrically connected with a control circuit (not shown in the figure), the magnetic guide pipe 23 is provided with a magnetic rod 24, one end of the magnetic rod 24 is provided with a rotating shaft 27 movably connected with the transmission mechanism 3 and a movable slot 242, and the other end of the magnetic rod 24 is provided with a non-magnetic rod 25, the non-magnetic rod 25 is coaxially arranged with the magnetic rod 24, a magnetic breaking mechanism is arranged at the cooperation end of the non-magnetic rod 25 and the magnetic rod 24, the magnetic breaking mechanism comprises a sleeve 26 matched with a magnetic breaking end 241 of the magnetic rod 24, the sleeve 26 is arranged in the magnetic guide pipe 23 and fixed with the driving seat 21, the sleeve 26 is provided with a tapered cavity 261 matched with the magnetic rod 24 and a through hole 262 through which the non-magnetic rod 25 can pass through the tapered cavity 261, that is, the magnetic breaking end 241 of the magnetic rod 24 is provided with the tapered cavity 261, when the sleeve 26 contacts with the magnetic rod 24, the tapered surface of the magnetic breaking end 241 only contacts with the surface of the tapered cavity 261 near the opening of the tapered cavity 261. The side surface of the magnetic breaking end 241 and the surface of the tapered cavity 261 form a first magnetic gap A1, and the end surface of the magnetic breaking end 241 and the bottom surface of the tapered cavity 261 form a second magnetic gap A2. That is, the included angle a between the tapered surface and the bottom surface of the magnetic breaking end 241 is smaller than the included angle b between the side wall of the tapered cavity 261 and the end surface, there is a first magnetic gap A1 between the side wall of the tapered cavity 261 and the tapered surface of the magnetic breaking end 241, the first magnetic gap A1 and the second magnetic gap A2 form a V-shaped or U-shaped space in communication. The first magnetic gap A1 is V-shaped structure, and the included angle c is 0.5-2 degrees, and the included angle c can also be set according to requirements, and the included angle c is set to 1 degree in the embodiment. In the embodiment, the driving seat 21 and the sleeve 26 are made of magnetic material, such as iron and its alloy. The lock body 1, the lock rod 4, the first rotating shaft 30, the first transmission rod 31, the second transmission rod 32 and the push rod 33 are made of non-magnetic conductor, such as stainless steel non-magnetic conductor, the lock body 1 is made of non-magnetic aluminum alloy, the sleeve 26, the magnetic guide pipe 23, the driving seat 21 and the magnetic rod 24 are made of magnetic conductor material, and the first transmission rod 31 and the first rotating shaft 30 can be made of non-magnetic conductor or magnetic conductor.

[0056] When the coil 22 is energized, the magnetic rod 24 on the drive mechanism 2 is in contact with the sleeve 26, at this time, the lock rod 4 is in the extended state, after power off, under the resetting action of the spring (not shown in the figure), such as the torsion spring on the third shaft 321, or it can be set, so that the lock rod 4 retraction movement, the magnetic rod 24 and the non-magnetic rod 25 move to the left, due to the existence of the magnetic breaking mechanism, so that the first magnetic gap A1 and the second magnetic gap A2 make the magnetic rod 24 instantaneous magnetic break, the remaining residual magnetism is isolated by the non-magnetic rod 25 and pierces the residual magnetism attached to the surface of the sleeve 26, the magnetic pipe 23, the drive seat 21, the magnetic rod 24 and other magnetic conductive parts, eliminating residual magnetism, avoiding the influence of residual magnetism on the drive mechanism 2.

[0057] Due to the existence of the magnetic breaking mechanism, the first magnetic gap A1 and the second magnetic gap A2 make the magnetic rod 24 instantaneous magnetic break, the remaining residual magnetism is isolated by the non-magnetic rod 25 and pierces the residual magnetism attached to the surface of the magnetic rod 24, eliminating residual magnetism. The existence of the first magnetic gap A1 and the second magnetic gap A2 can make the magnetic break time shorter, avoiding the influence of residual magnetism on the drive mechanism 2.

[0058] When installed, the non-magnetic rod 25 penetrates the through hole 262, which is coaxial with the non-magnetic rod 25, the magnetic rod 25 and the magnetic pipe 23, the cooperation of the non-magnetic rod 25 and the through hole 262 can play a guiding role, which can ensure that the magnetic rod 24 has smaller movement resistance when the coil 22 is energized and de-energized. According to the needs, the non-magnetic rod 25 and / or the through hole 262 is provided with a gas guide groove (not shown in the figure), which can avoid noise or pressure caused by the movement of the magnetic rod 24, so as to prolong the execution reaction time and affect the response speed of the switch lock.

[0059] In the embodiment, the tapered surface of the tapered cavity 261 and the broken magnetic end 241 adopts a conical structure, which is convenient for processing, and the length direction section of the tapered cavity 261 is V-shaped. The magnetic conducting pipe 23 comprises a copper pipe, and the magnetic bar 24 is matched with the inner diameter gap of the copper pipe. The non-magnetic conducting bar 25 comprises non-magnetic stainless steel material, and can play a role of magnetic isolation. When the magnetic bar 24 is pushed to the left under the spring force, the non-magnetic conducting bar 25 breaks the magnetic field remaining on the surface of the magnetic bar 24, eliminates the residual magnetism attached to the magnetic bar 24, the driving seat 21, the magnetic conducting pipe 23 and the sleeve 26, etc. When the broken magnetic end of the magnetic bar 24 and the sleeve 26 are matched with the double V-shaped structure, when the coil 22 is electrified, the magnetic bar 24 moves to the rightmost side, the broken magnetic end is matched with the sleeve 26, the two V-shaped structures are closed, and the first magnetic gap A1 and the second magnetic gap A2 form a V-shaped space. When the coil 22 is electrically disconnected, the magnetic bar 24 slides to the left, the magnetic field is disconnected, the residual magnetism is isolated by the non-magnetic conducting bar 25 and the residual magnetism attached to the surface of the magnetic bar 24 is broken, the residual magnetism is eliminated, the efficiency of the driving machine can be improved, and the energy loss can be reduced. At the same time, since the residual magnetism or residual magnetism can be eliminated, the aluminum core wire can be used instead of the copper core wire, and in the same working current and coil quantity, the same power and effect as using the copper core wire can be achieved, so that the cost can be saved.

[0060] The transmission mechanism 3 comprises a first transmission rod 31 movably connected with the magnetic bar 24 through a first rotating shaft 30, and the other end of the first transmission rod 31 is connected with a second transmission rod 32 through a second rotating shaft 322. When the first transmission rod 31 is driven, the second transmission rod 32 rotates about a third rotating shaft 321. The magnetic bar 24 is provided with a movable groove 242 at the matched end of the first transmission rod 31, and one end of the first transmission rod 31 is installed in the movable groove 242. Since the movable groove 242 and the magnetic bar 24 are on the same axis, the acting force is in the same direction when the transmission is driven, so that the rotating torque efficiency of the second transmission rod 32 is improved. The second rotating shaft 322 is non-collinear with the first rotating shaft 30 and the third rotating shaft 321, and the second transmission rod 32 is provided with a push rod 33 matched with the lock rod 4, that is, the lock rod 4 is provided with a matched groove 41, and the push rod 33 is movably connected in the matched groove 41. The third rotating shaft 321 is installed on the lock body 1, and the position is fixed. When working, the first rotating shaft 30 moves in the horizontal direction, and the second rotating shaft 322 rotates about the third rotating shaft 321.

[0061] The application also provides an electromagnetic lock embodiment.

[0062] The electromagnetic lock comprises a lock body 1 provided with a cavity and an electromagnetic lock driving device arranged in the cavity,

[0063] The electromagnetic lock driving device comprises a driving mechanism 2 and a transmission mechanism 3, one end of the transmission mechanism 3 is movably connected with the driving mechanism 2, and the other end is movably connected with a lock rod 4, the driving mechanism 2 drives the transmission mechanism 3 to move to drive the lock rod 4 to move, in the embodiment, the movement direction of the driving mechanism 2 is perpendicular to the movement direction of the lock rod 4, that is, the transmission mechanism 3 converts the horizontal linear movement of the driving mechanism 2 into the movement direction of the lock rod 4 which is perpendicular to the horizontal linear movement direction of the driving mechanism 2. The driving mechanism 2 comprises a driving seat 21 and a magnetic guide pipe 23 arranged on the driving seat 21, the magnetic guide pipe 23 is provided with a coil 22 electrically connected with a control circuit board (not shown in the drawing), the magnetic guide pipe 23 is provided with a magnetic rod 24, one end of the magnetic rod 24 is provided with a rotating shaft 27 movably connected with the transmission mechanism 3 and a movable slot 242, and the other end of the magnetic rod 24 is provided with a non-magnetic rod 25, the non-magnetic rod 25 is coaxially arranged with the magnetic rod 24, a magnetic breaking mechanism is arranged at the cooperation end of the non-magnetic rod 25 and the magnetic rod 24, the magnetic breaking mechanism comprises a sleeve 26 matched with a magnetic breaking end 241 of the magnetic rod 24, the sleeve 26 is arranged in the magnetic guide pipe 23 and fixed with the driving seat 21, the sleeve 26 is provided with a tapered cavity 261 matched with the magnetic rod 24 and a through hole 262 through which the non-magnetic rod 25 can pass through the tapered cavity 261, that is, the magnetic breaking end 241 of the magnetic rod 24 is provided with the tapered cavity 261, when the sleeve 26 contacts with the magnetic rod 24, the tapered surface of the magnetic breaking end 241 only contacts with the surface of the tapered cavity 261 near the opening of the tapered cavity 261. The side surface of the magnetic breaking end 241 and the surface of the tapered cavity 261 form a first magnetic gap A1, and the end surface of the magnetic breaking end 241 and the bottom surface of the tapered cavity 261 form a second magnetic gap A2. That is, the included angle a between the tapered surface and the bottom surface of the magnetic breaking end 241 is smaller than the included angle b between the side wall of the tapered cavity 261 and the end surface, there is a first magnetic gap A1 between the side wall of the tapered cavity 261 and the tapered surface of the magnetic breaking end 241, the first magnetic gap A1 and the second magnetic gap A2 form a V-shaped or U-shaped space in communication. The first magnetic gap A1 is V-shaped structure, the included angle c is 0.5-2 degrees, and the included angle c can also be set according to requirements, and the included angle c is set to 1 degree in the embodiment. In the embodiment, the driving seat 21 and the sleeve 26 are made of magnetic material, such as iron and its alloy. The lock body 1, the lock rod 4, the first rotating shaft 30, the first transmission rod 31, the second transmission rod 32, and the push rod 33 are made of non-magnetic conductor, such as stainless steel non-magnetic conductor, the lock body 1 is made of non-magnetic aluminum alloy, the sleeve 26, the magnetic guide pipe 23, the driving seat 21, and the magnetic rod 24 are made of magnetic conductor material, and the first transmission rod 31 and the first rotating shaft 30 can be made of non-magnetic conductor or magnetic conductor.

[0064] When the coil 22 is energized, the magnetic rod 24 on the drive mechanism 2 is in contact with the sleeve 26, at this time, the lock rod 4 is in the extended state, when the power is off, under the action of the spring, the spring can be a torsion spring arranged on the third rotating shaft 321, or it can be arranged, so that the lock rod 4 is in the retracted state. Due to the existence of the demagnetization mechanism, the first magnetic gap A1 and the second magnetic gap A2 make the magnetic rod 24 instantaneously demagnetized at the moment of power-off, and the residual magnetism is isolated by the non-magnetic rod 25 and punctured to the residual magnetism attached to the surface of the sleeve 26, the magnetic tube 23, the drive seat 21, the magnetic rod 24 and other magnetic conductive parts, thereby eliminating the residual magnetism. The existence of the first magnetic gap A1 and the second magnetic gap A2 can make the demagnetization time shorter, thereby avoiding the influence of residual magnetism on the drive mechanism 2.

[0065] When installed, the non-magnetic rod 25 penetrates the through hole 262, which is coaxial with the non-magnetic rod 25, the magnetic rod 25 and the magnetic tube 23. The non-magnetic rod 25 cooperates with the through hole 262 to play a guiding role, so that the movement resistance of the magnetic rod 24 is small when the coil 22 is energized and de-energized. According to the needs, the non-magnetic rod 25 or the through hole 262 is provided with a gas guide groove (not marked in the drawing), which can avoid noise or pressure caused by the movement of the magnetic rod 24, thereby prolonging the execution reaction time and affecting the response speed of the switch lock.

[0066] In this embodiment, the tapered surface of the tapered cavity 261 and the demagnetization end 241 adopts a conical structure, which is convenient for processing, and the length direction section of the tapered cavity 261 is V-shaped. The magnetic tube 23 comprises a copper pipe, and the magnetic rod 24 is in gap cooperation with the inner diameter of the copper pipe. The non-magnetic rod 25 comprises non-magnetic stainless steel material, which can play a magnetic isolation role. When the magnetic rod 24 is pushed to the left under the action of the spring force, the non-magnetic rod 25 breaks the magnetic field remaining on the surface of the magnetic rod 24, and eliminates the residual magnetism attached to the magnetic rod 24. When the magnetic rod 24 and the sleeve 26 are in double V-shaped structure cooperation at the demagnetization end, the magnetic rod 24 moves to the rightmost side after the coil 22 is energized, the demagnetization end cooperates with the sleeve 26, the two V-shaped structures are closed, and the first magnetic gap A1 and the second magnetic gap A2 form a V-shaped space. When the coil 22 is de-energized, the magnetic rod 24 slides to the left, the magnetic field is broken, the residual magnetism is isolated by the non-magnetic rod 25 and punctured to the residual magnetism attached to the surface of the magnetic rod 24, thereby eliminating the residual magnetism, improving the efficiency of the drive mechanism, and reducing energy loss. At the same time, due to the elimination of residual magnetism or residual magnetism, aluminum core wire can be used instead of copper core wire, and under the same working current and coil quantity, the same power and effect as using copper wire core can be achieved, thereby saving cost.

[0067] The transmission mechanism 3 comprises a first transmission rod 31 having one end movably connected with the magnetic bar 24 through a first rotating shaft 30, and the other end connected with a second transmission rod 32 through a second rotating shaft 322, and when transmission, the first transmission rod 31 makes the second transmission rod 32 rotate with a third rotating shaft 321. The magnetic bar 24 and the cooperation end of the first transmission rod 31 are provided with a movable groove 242, and one end of the first transmission rod 31 is installed in the movable groove 242. Since the movable groove 242 and the magnetic bar 24 are on the same axis, the acting force is in the same direction during transmission, thereby improving the rotational torque efficiency of the second transmission rod 32. The second rotating shaft 322 is non-collinear with the first rotating shaft 30 and the third rotating shaft 321, and the second transmission rod 32 is provided with a push rod 33 cooperating with the lock rod 4, that is, the lock rod 4 is provided with a cooperation groove 41, and the push rod 33 is movably connected in the cooperation groove 41. The third rotating shaft 321 is installed on the lock body 1, and its position is fixed. During work, the first rotating shaft 30 moves in the horizontal direction, and the second rotating shaft 322 rotates with the third rotating shaft 321.

[0068] As shown in FIGS. 10-14, the present application also provides another embodiment of the electromagnetic lock.

[0069] The electromagnetic lock refers to the installation mode of the electromagnetic lock, which includes hanging installation and side installation, and both kinds of installation can prevent bolt loosening. The electromagnetic lock comprises a lock body 1 installed on a door frame or a door, and the lock body 1 is provided with a mounting cooperation surface 11 which can be installed in a hanging mode or a side mode. The mounting cooperation surface is provided with a mounting hole 13, and the lock body 1 is provided with at least one fixing groove 12. The mounting hole 13 is arranged in the fixing groove 12, and the fixing groove 12 is provided with an anti-loosening fixing structure 2. The fixing structure 2 is provided with a through hole 21 and a fastener (not marked in the drawing) arranged in the through hole 21. After installation, the fastener passes through the through hole 21 and cooperates with the fixing hole 14 arranged in the fixing groove 12 to fix the fixing structure 2 and the lock body 1, and the fixing structure 2 abuts against the end of the fastener on the mounting hole 13.

[0070] Specifically, the fastener comprises a bolt and the like. The fixing groove 12 comprises two, which are respectively arranged at both ends of the lock body 1. The fixing groove 12 increases in size from inside to outside in the fixing direction, so that the reverse pulling mode can be avoided during manufacturing, and the manufacturing difficulty is reduced.

[0071] For convenience of description, two fixing structures are taken as examples for description. The mounting hole 13 comprises four, which are respectively divided into two groups, each group has two, and are arranged in the fixing groove 12 and penetrate the mounting cooperation surface 11.

[0072] The fixed slot 12 is opened on one side or two sides of the lock body, when opened on one side, the fixed hole 14 is arranged in the same direction as the mounting hole 13, when opened on two sides, the fixed hole 14 can be arranged in the direction different from the mounting hole 13, for example, the mounting hole 13 is perpendicular to the fixed hole 14, as shown in Fig. 13. In this way, the fastening directions of the fasteners for respectively fixing the lock body 1 and the fasteners for fixing the fixed structure 2 to the fixed lock body 1 are different, when the fixed structure 2 is in contact with the fasteners after being fixed, it can prevent the fasteners for fixing the lock body 1 from loosening when frequently opening and closing.

[0073] The lock body 1 is provided with a receiving cavity (not marked in the figure), the receiving cavity is provided with a coil 16 and a magnetic core 17 moving when energized or de-energized, one end of the magnetic core 17 is connected with one end of a transmission member 18, the other end of the transmission member 18 is connected with a lever 19, the lever 19 is movably connected with the lock body 1 through a rotating shaft, a locking rod 15 is arranged on the lever 19, specifically, the coil 16 and the locking rod 15 are fixed on the fixed plate 10, during installation, the coil 16 and the locking rod 15 are received in the receiving cavity, and the lock body 1 is provided with a lock hole for the locking rod 15 to extend out. During operation, the coil 16 is energized to move the magnetic core 17, and then drive the transmission member 18 to move, the lever 19 connected with one end of the transmission member 18 rotates around the rotating shaft 110, and the lever 19 drives the locking rod 15 to extend and retract. According to the need, the side wall of the fixed slot 12 is provided with a limiting structure (not shown in the figure) in the loosening direction of the lock body, the limiting structure includes a limiting slot 121, and the side surface of the fixed structure 2 is provided with a protruding strip (not shown in the figure) matched with the limiting slot, during installation, the fixed structure 2 is placed in the fixed slot 12 from the direction perpendicular to the mounting direction of the mounting hole 13, and the fixed hole 14 for installing the fixed structure 2 is not in the same plane as the mounting hole 13, for example, arranged on the side surface, as shown in Fig. 9.

[0074] The fixed structure 2 includes a fixed block, the end surface of the fixed block close to the mounting hole 13 is provided with two stop strips 22, and a gap is arranged between the two stop strips 22. The end surface of each stop strip 22 is provided with an inclined surface, and the directions of the two inclined surfaces are opposite, so that the end surfaces of the two stop strips 22 form a slot-shaped structure.

[0075] During installation, the mounting and matching surface of the lock body is fixed with the door frame or the door through fasteners such as bolts, then the fixed structure is placed in the fixed slot, and the fixed structure is fixed with the lock body through fasteners such as bolts, so that the end of the fixed structure is in contact with the fasteners of the lock body. Since the fixed structure is fixed with the lock body, and the fixed structure is in contact with the fasteners for fixing the lock body, when the door is opened and closed, no force is applied to the fixed structure, the fixed structure avoids loosening during frequent opening and closing, and the fastening of installation and the reliability of use are improved. At the same time, since the lock body can be hung or installed on the side, the installation requirements are reduced.

[0076] As shown in Figure 14, the utility model further provides an electromagnetic lock, can cooperate with door installation, this electromagnetic lock still includes fixed installation structure 3, this fixed installation structure includes fixed plate 30 and with fixed plate connects connecting rod 31, connecting rod 31 is equipped with fixed hole (not marked in the drawing), after the connecting rod 31 on fixed installation structure 3 is passed through the through hole on the door, the end of connecting rod 31 and the installation hole 13 on lock body 1 position corresponds, through fastener, lock body is fixed on the door.

[0077] According to the need, when the lock body 1 is provided with electromagnetic coil, can be installed through the door frame hanging, the electromagnetic coil generates magnetic force and is fixed on the door with the magnet attraction to realize the fixation. When through the side installation, the anti-loosening electromagnetic lock further includes the movable assembly that the magnetic force under the action of electromagnetic coil generates locks or opens.

[0078] When fixing, the mounting cooperation surface of lock body and door frame or door are fixed through the fastener such as bolt, then the fixed structure is placed in the fixed groove, and the fixed structure and lock body are fixed through the fastener such as bolt, so that the end of fixed structure and the fastener of lock body are in contact. Because the fixed structure and lock body are fixed, and the fixed structure is in contact with the fastener of the fixed installation lock body, no acting force is generated on the fixed structure when opening and closing the door, the fixed structure avoids loosening phenomenon in the process of frequent opening and closing, improves the fastening of installation and the reliability of use. At the same time, because the lock body can be hung or installed on the side and designed with bolt anti-loosening, the installation requirement is reduced.

[0079] The above embodiments are only used to illustrate the technical solutions of the present application, but not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electromagnetic lock drive apparatus comprising a drive mechanism, characterized by, The driving mechanism comprises a driving base and a magnetic conducting pipe arranged on the driving base, the magnetic conducting pipe is provided with a coil connected with a control circuit, the magnetic conducting pipe is provided with a magnetic rod, the magnetic rod is provided with a demagnetization end, the demagnetization end is provided with a demagnetization mechanism, the demagnetization mechanism comprises a sleeve matched with the demagnetization end and a non-magnetic conducting rod coaxial with the magnetic rod, the sleeve is provided with a cavity matched with the magnetic rod and a through hole for the non-magnetic conducting rod to pass through the cavity, and the demagnetization mechanism eliminates residual magnetism on the surface of the magnetic rod when the coil is powered off.

2. The electromagnetic lock drive apparatus according to claim 1, wherein The surface of the demagnetization end is conical, the cavity is conical, the included angle between the conical surface of the demagnetization end and the bottom surface is smaller than the included angle between the side wall of the conical cavity and the end surface, and the conical side surface of the demagnetization end and the conical side surface of the cavity form a first magnetic gap when the demagnetization end is in contact with the sleeve.

3. The electromagnetic lock drive apparatus according to claim 2, wherein The end surface of the demagnetization end and the bottom surface of the conical cavity form a second magnetic gap, and the first magnetic gap and the second magnetic gap communicate to form a V-shaped or U-shaped space.

4. The electromagnetic lock drive apparatus according to claim 2, wherein The first magnetic gap is V-shaped, and the included angle is 0.5-2 degrees.

5. The electromagnetic lock drive apparatus according to claim 1, wherein The non-magnetic conducting rod and / or the through hole are provided with a gas guide groove.

6. The electromagnetic lock drive apparatus according to claim 1, wherein The transmission mechanism comprises a first transmission rod movably connected to the transmission end of the magnetic rod through a first rotating shaft at one end, the other end of the first transmission rod is connected to a second transmission rod through a second rotating shaft, the second transmission rod is provided with a lever matched with a lock rod, the second rotating shaft is non-collinear with the first rotating shaft and a third rotating shaft, and when the transmission mechanism is in operation, the first transmission rod drives the second transmission rod to rotate about the third rotating shaft.

7. The electromagnetic lock drive apparatus according to claim 6, wherein The magnetic rod is provided with a movable groove at the matched end of the first transmission rod.

8. The electromagnetic lock drive apparatus according to claim 7, wherein The electromagnetic lock driving device further comprises a lock rod moving vertically to the movement direction of the magnetic rod, the lock rod is provided with a matched groove, the lever is located in the matched groove, and the lever makes the movement direction of the lock rod perpendicular to the movement direction of the driving mechanism during operation.

9. An electromagnetic lock comprising a lock body provided with a cavity and an electromagnetic lock driving device provided in the cavity, characterized in that, The electromagnetic lock driving device has the electromagnetic lock driving device of claim 2.

10. The electromagnetic lock according to claim 9, characterized in that The electromagnetic lock further comprises a lock body for fixing the electromagnetic lock driving device, the lock body is provided with a mounting matched surface, and the lock body is provided with an anti-loosening fixing structure.

11. The electromagnetic lock according to claim 10, wherein, The mounting matched surface is provided with a mounting hole, the lock body is provided with at least a fixing groove, the mounting hole is arranged in the fixing groove, the anti-loosening fixing structure is arranged in the fixing groove, the fixing structure is provided with a through hole and a bolt arranged in the through hole, the bolt is matched with a fixing hole arranged in the fixing groove through the through hole after mounting to fix the fixing structure and the lock body, and the end of the fixing member on the mounting hole is in contact with the fixing structure.

12. The electromagnetic lock according to claim 11, wherein, The opening of the fixing groove increases from inside to outside in the fixing direction.

13. The electromagnetic lock according to claim 11, wherein, The directions of the mounting hole and the fixing hole are the same or perpendicular.

14. The electromagnetic lock according to claim 11, wherein, The side wall of the fixing groove is provided with a limiting structure in the loosening direction of the lock body.

15. The electromagnetic lock according to claim 11, wherein, The end surface of each stop strip is provided with an inclined surface, and the directions of the two inclined surfaces are opposite.

16. The electromagnetic lock according to claim 15, wherein, The end surface of each stop strip is provided with an inclined surface, and the directions of the two inclined surfaces are opposite.

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