Electromagnetic lock cylinder and safety lock

Abstract

The present application relates to the technical field of electromagnetic devices, and in particular to an electromagnetic lock core and a safety lock. The electromagnetic lock core is used for a safety lock, and the electromagnetic lock core includes an electromagnetic assembly; the electromagnetic assembly includes a shell and a coil assembly, a moving iron core and a pressure-bearing magnetic conductive part located in the shell, the moving iron core is located at the end of the coil assembly, and the pressure-bearing magnetic conductive part is located between the coil assembly and the moving iron core; the moving iron core can be connected to the lock core rod of the safety lock; the pressure-bearing magnetic conductive part is provided with a magnetic reduction groove, and the moving iron core is correspondingly provided with a protrusion, and when the moving iron core is close to the pressure-bearing magnetic conductive part under the action of electromagnetic force, the protrusion can be placed in the magnetic reduction groove. The present application provides a magnetic reduction groove in the pressure-bearing magnetic conductive part to reduce its local magnetic conductivity, correct the magnetic circuit between the magnetic yoke, the moving iron core, and the shell, and provides a protrusion on the moving iron core and the protrusion can be placed in the magnetic reduction groove. The mosaic structure formed between the moving iron core and the pressure-bearing magnetic conductive part increases the magnetic conductive area between the moving iron core and the pressure-bearing magnetic conductive part, thereby increasing the electromagnetic force between the two.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic devices, and in particular to an electromagnetic lock core and a safety lock. Background Art

[0002] Electromagnetic locks use electromagnetic force to drive the iron core to move in order to limit the position of a device or component. Existing electromagnetic locks are generally used in general places with normal temperature and pressure. They cannot provide a large magnetic force at a low power, and thus cannot achieve a rapid response effect. Summary of the invention

[0003] The purpose of the present application is to provide an electromagnetic lock core and a safety lock, which are used to provide a large magnetic force so that the electromagnetic lock core can respond quickly.

[0004] The present application provides an electromagnetic lock core for a safety lock, wherein the electromagnetic lock core comprises an electromagnetic assembly;

[0005] The electromagnetic assembly comprises a housing and a coil assembly, a moving iron core and a pressure-bearing magnetic conductive member located in the housing, wherein the moving iron core is located at the end of the coil assembly, and the pressure-bearing magnetic conductive member is located between the coil assembly and the moving iron core; the moving iron core can be connected to the lock core rod of the safety lock;

[0006] The pressure-bearing magnetic conductive part is provided with a magnetic reduction groove, and the moving iron core is correspondingly provided with a protrusion. When the moving iron core is acted upon by electromagnetic force and approaches the pressure-bearing magnetic conductive part, the protrusion can be placed in the magnetic reduction groove.

[0007] In the above technical solution, further, the magnetic reduction groove is an annular groove, and the position of the magnetic reduction groove is set corresponding to the position of the coil assembly;

[0008] The protrusion is an annular protrusion.

[0009] In the above technical solution, further, the groove wall and the groove bottom of the magnetic reduction groove are in an arc transition, the edge of the insertion end of the protrusion is chamfered, and the arc radius between the groove wall and the groove bottom is smaller than the radius of the chamfer of the protrusion.

[0010] In the above technical solution, further, a fixing groove is provided on a side of the pressure-bearing magnetic conductive part close to the coil assembly, and a pressure-bearing non-magnetic pressure-bearing part is embedded in the fixing groove.

[0011] In the above technical solution, further, the fixing groove is an annular groove, and the position of the fixing groove is arranged corresponding to the position of the coil assembly.

[0012] In the above technical solution, further, it also includes a sealing ring;

[0013] The circumferential side wall of the pressure-bearing magnetic conductive part is in contact with the outer shell, and a sealing groove is provided on the circumferential side wall of the pressure-bearing magnetic conductive part. The sealing ring is placed in the sealing groove to seal between the pressure-bearing magnetic conductive part and the outer shell.

[0014] In the above technical solution, further, the housing is provided with an opening so that the base provided with the lock core rod can be provided at the opening;

[0015] The side of the moving iron core away from the lock core rod can also be connected to the signal rod of the safety lock, and the shell is provided with a through hole so that the signal rod can pass through the through hole.

[0016] In the above technical solution, further, it also includes a connection terminal, and the connection terminal is electrically connected to the coil assembly through a lead wire;

[0017] The housing is provided with a mounting groove, the mounting groove is connected with a housing cavity formed by the housing for mounting the coil assembly through a connecting hole, and at least a part of the wiring terminal is mounted in the mounting groove;

[0018] The installation groove and the connection hole are filled with sealing material.

[0019] In the above technical solution, further, the coil assembly is formed by winding enameled wire, and the air gap of the coil assembly is filled with insulating material;

[0020] The enameled wire, the insulating material and the lead wire can withstand temperatures of -40-220 degrees, have a radiation resistance of 0-1700 KGy, and have an insulation grade of C or H.

[0021] The present application also provides a safety lock, comprising the electromagnetic lock core described in the above solution.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The electromagnetic lock core provided by the present application reduces the local magnetic conductivity of the pressure-bearing magnetic conductive part by opening a magnetic reduction groove on the pressure-bearing magnetic conductive part to correct the magnetic circuit between the magnetic yoke, the moving iron core and the outer shell; a protrusion is correspondingly arranged on the moving iron core, and when the moving iron core is close to the pressure-bearing magnetic conductive part under the action of electromagnetic force, the protrusion can be placed in the magnetic reduction groove to form an inlaid structure between the moving iron core and the pressure-bearing magnetic conductive part, thereby increasing the magnetic conductive area between the moving iron core and the pressure-bearing magnetic conductive part, thereby increasing the electromagnetic force between the two and achieving the technical effect of large suction.

[0024] The present application also provides a safety lock, including the electromagnetic lock core described in the above solution. Based on the above analysis, it can be seen that the safety lock also has the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of the electromagnetic lock cylinder provided in this application;

[0027] Figure 2 for Figure 1 The enlarged schematic diagram of point I in the middle;

[0028] Figure 3 for Figure 1 The enlarged schematic diagram of II in the middle;

[0029] Figure 4 for Figure 1 Enlarged schematic diagram of point III in the middle.

[0030] In the figure: 101-signal rod; 102-housing; 103-coil assembly; 104-moving iron core; 105-pressure-bearing magnetic conductive part; 106-magnetic reduction groove; 107-protrusion; 108-fixing groove; 109-non-magnetic pressure-bearing part; 110-sealing ring; 111-connecting terminal; 112-lead; 113-installation groove; 114-connecting hole; 115-opening; 116-signal body; 117-permanent magnet; 118-connecting part; 119-lock core rod; 120-base; 121-spring. DETAILED DESCRIPTION

[0031] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] See also Figures 1 to 3 As shown, the electromagnetic lock core provided in the present application is used for a safety lock, and the electromagnetic lock core includes an electromagnetic assembly; specifically, the electromagnetic assembly includes a shell 102 and a coil assembly 103, a moving iron core 104 and a pressure-bearing magnetic conductive part 105 located in the shell 102, wherein the coil assembly 103 is generally cylindrical and forms a solenoid electromagnet structure with the moving iron core 104; the shell 102 is formed with a receiving cavity adapted to the coil assembly 103, so that the coil assembly 103 can be installed in the receiving cavity.

[0036] The moving iron core 104 is located at one end of the coil assembly 103. When the coil assembly 103 is energized, an electromagnetic force is generated between the moving iron core 104 to make the moving iron core 104 move toward the direction of the coil assembly 103; the moving iron core 104 is connected to the lock core rod 119, thereby driving the lock core rod 119 to perform telescopic movement to achieve the locking and unlocking functions.

[0037] Preferably, the electromagnetic lock is also provided with a signal component for sending a signal to indicate the position of the lock core rod 119, so as to clarify the locking state. Specifically, the signal component includes a signal rod 101, a permanent magnet 117 connected to the signal rod 101, and a signal body 116 for sensing the position of the permanent magnet 117. One end of the signal rod 101 is connected to the moving iron core 104, and the other end of the signal rod 101 passes through the coil assembly 103 and the pressure-bearing magnetic conductive member 105, and can extend out of the housing 102 and extend into the signal body 116. The moving iron core 104 is connected to the signal rod 101 and the lock core rod 119 through a connecting member 118. The movement of the moving iron core 104 drives the signal rod 101 and the lock core rod 119 to move synchronously, and the locking state of the lock core rod 119 is obtained by sensing the position of the permanent magnet 117 through the signal body 116.

[0038] The pressure-bearing magnetic conductive part 105 is located between the coil assembly 103 and the moving iron core 104. The moving iron core 104 moves toward the direction of the coil assembly 103 to achieve contact with the pressure-bearing magnetic conductive part 105. The pressure-bearing magnetic conductive part 105 is provided with a magnetic reduction groove 106 to reduce its local magnetic conductivity and correct the magnetic circuit between the magnetic yoke, the moving iron core 104 and the housing 102. The moving iron core 104 is correspondingly provided with a protrusion 107. When the moving iron core 104 is close to the pressure-bearing magnetic conductive part 105 under the action of electromagnetic force, the protrusion 107 can be placed in the magnetic reduction groove 106. The inlaid structure formed between the moving iron core and the pressure-bearing magnetic conductive part 105 increases the magnetic conductive area of ​​the two, thereby increasing the electromagnetic force between the two, and achieving the technical effect of large suction.

[0039] Preferably, an opening 115 is formed on one side of the housing 102 close to the moving iron core 104, and a base 120, a lock core rod 119 installed on the base 120, a spring 121 and other elastic members are provided at the opening 115, and the elastic member is connected to the moving iron core 104 to provide a force opposite to the electromagnetic force. The electromagnetic lock core uses the surface force generated by the magnetic pole surface, the solenoid force and the reaction force provided by the spring 121 to drive the signal rod 101 to move, so as to achieve the expected safety function of the system.

[0040] In an optional solution of this embodiment, the magnetic reduction groove 106 is an annular groove, and the position of the magnetic reduction groove 106 is set corresponding to the position of the coil assembly 103, and the protrusion 107 is also correspondingly set as an annular protrusion 107, so that the moving iron core 104 can be closer to the coil assembly 103, thereby further increasing the electromagnetic force between the two.

[0041] In an optional solution of this embodiment, the groove wall and the groove bottom of the magnetic reduction groove 106 are in arc transition, the edge of the insertion end of the protrusion 107 is rounded, and the arc radius between the groove wall and the groove bottom is smaller than the radius of the rounded corner of the protrusion 107.

[0042] In this embodiment, when the moving iron core 104 and the pressure-bearing magnetic conductive member 105 are fitted, the protrusion 107 is placed in the magnetic reduction groove 106. Since the moving iron core 104 and the pressure-bearing magnetic conductive member 105 are both made of magnetic conductive materials, the sharp corner of the protrusion 107 and the groove bottom of the magnetic reduction groove 106 are prone to adhesion. The arc structure is formed only at the transition position between the groove wall and the groove bottom of the magnetic reduction groove 106, and the edge of the insertion end of the protrusion 107 is rounded, which will not have a great impact on the magnetic conductive area; and the arc radius between the groove wall and the groove bottom is smaller than the radius of the rounded corner of the protrusion 107, so that a certain gap is formed between the two, avoiding the occurrence of adhesion.

[0043] In an optional solution of this embodiment, a fixing groove 108 is provided on one side of the pressure-bearing magnetic conductive member 105 close to the coil assembly 103 , and a non-magnetic pressure-bearing member 109 is embedded in the fixing groove 108 .

[0044] In this embodiment, in order to further enhance the magnetic conductivity, a non-magnetic pressure-bearing part 109 is embedded in the pressure-bearing magnetic conductive part 105, thereby changing the magnetic circuit generated by the coil assembly 103 so that the magnetic circuit passes through the moving iron core 104, further increasing the electromagnetic force between the coil assembly 103 and the moving iron core 104.

[0045] Optionally, the pressure-bearing magnetic conductive component 105 is threadedly connected to the non-magnetic pressure-bearing component 109 to increase the pressure-bearing strength.

[0046] In an optional solution of this embodiment, the fixed groove 108 is an annular groove adapted to the shape of the coil, and the position of the fixed groove 108 is set corresponding to the position of the coil assembly 103, thereby changing the magnetic circuit generated by the coil assembly 103 and further increasing the electromagnetic force between the coil assembly 103 and the moving iron core 104.

[0047] In an optional solution of this embodiment, the electromagnetic lock core further includes a sealing ring 110; the circumferential side wall of the pressure-bearing magnetic conductive part 105 is in contact with the housing 102, and a sealing groove is provided on the circumferential side wall of the pressure-bearing magnetic conductive part 105, and the sealing ring 110 is placed in the sealing groove to seal between the pressure-bearing magnetic conductive part 105 and the housing 102. The material of the sealing ring 110 can be EPDM rubber, which has properties such as heat resistance and aging resistance, and realizes reliable sealing here.

[0048] In this embodiment, a sealing ring 110 is provided between the pressure-bearing magnetic conductive member 105 and the housing 102 to form a closed space in the accommodating cavity for placing the coil assembly 103 to prevent air and water vapor from entering, thereby enhancing the insulation effect of the coil assembly 103 .

[0049] Embodiment 2

[0050] The electromagnetic lock core in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0051] See also Figure 1 and Figure 4 As shown, in an optional scheme of this embodiment, the electromagnetic lock core also includes a wiring terminal 111, and the wiring terminal 111 is electrically connected to the coil assembly 103 through a lead 112; the housing 102 is provided with a mounting groove 113, and the mounting groove 113 is connected to a cavity formed by the housing 102 for mounting the coil assembly 103 through a connecting hole 114, and at least a portion of the wiring terminal 111 is installed in the mounting groove 113.

[0052] In this embodiment, the connection terminal 111 may be a connection post, which is electrically connected to the coil assembly 103 through the lead wire 112 to energize or deenergize the coil assembly 103. The connection terminal 111 is embedded in the mounting groove 113, which can reduce the connection height, save connection space, and facilitate maintenance.

[0053] In an optional solution of this embodiment, the mounting groove 113 and the connecting hole 114 are filled with sealing material.

[0054] In this embodiment, a potting process can be used to pot the installation groove 113 and the connection hole 114. The potting material should have the characteristics of radiation resistance, high temperature resistance, high humidity resistance, and aging resistance, so as to achieve the sealing of the lead 112 outlet, improve the equipment protection level, and further achieve the sealing effect of the magnetic reduction cavity, thereby increasing the electrical insulation strength.

[0055] In the optional solution of this embodiment, the coil assembly 103 is formed by winding high-temperature-resistant and radiation-resistant high-insulation enameled wire, and the air gap of the coil assembly 103 is filled with insulating material; the lead wire 112 is formed by a high-temperature-resistant and radiation-resistant high-insulation wire. The above-mentioned material has a temperature tolerance of -40-220 degrees, a radiation resistance strength of 0-1700KGy, and an insulation level of C or H.

[0056] In this embodiment, the electrical insulation level of the coil assembly 103 is designed to be H level or above. Specifically, high-temperature-resistant and radiation-resistant high-insulation enameled wire is wound by a high-precision fully automatic winding machine, and the whole can be processed by vacuum and pressure impregnation process and vacuum drying process technology, ensuring that the air gap inside the coil is filled with insulating varnish, meeting the interlayer insulation and interturn insulation requirements and anti-vibration requirements of the coil. The lead wire is made of high-temperature resistant wire, and the enameled wire is welded by electric fusion process. The welding part adopts multi-layer insulation material and insulation tube sealing technology, which can effectively reduce the temperature rise of the coil and improve the insulation performance, shockproof performance and durability of the coil.

[0057] Embodiment 3

[0058] Embodiment 3 of the present application provides a safety lock, including the electromagnetic lock core of any of the above embodiments, and thus has all the beneficial technical effects of the electromagnetic lock core of any of the above embodiments, which will not be repeated here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. An electromagnetic lock core, used for a safety lock, characterized in that: The electromagnetic lock core includes an electromagnetic assembly; The electromagnetic assembly comprises a housing and a coil assembly, a moving iron core and a pressure-bearing magnetic conductive member located in the housing, wherein the moving iron core is located at the end of the coil assembly, and the pressure-bearing magnetic conductive member is located between the coil assembly and the moving iron core; the moving iron core can be connected to the lock core rod of the safety lock; The pressure-bearing magnetic conductive part is provided with a magnetic reduction groove, and the moving iron core is correspondingly provided with a protrusion. When the moving iron core is acted upon by the electromagnetic force and approaches the pressure-bearing magnetic conductive part, the protrusion can be placed in the magnetic reduction groove to form a mosaic structure; The magnetic reduction groove is an annular groove, and the position of the magnetic reduction groove is arranged corresponding to the position of the coil assembly; The protrusion is an annular protrusion; The groove wall and the groove bottom of the magnetic reduction groove are in arc transition, the edge of the insertion end of the protrusion is rounded, and the arc radius between the groove wall and the groove bottom is smaller than the radius of the rounded corner of the protrusion.

2. The electromagnetic lock cylinder according to claim 1, characterized in that: A fixing groove is provided on one side of the pressure-bearing magnetic conductive part close to the coil assembly, and a non-magnetic pressure-bearing part is embedded in the fixing groove.

3. The electromagnetic lock cylinder according to claim 2, characterized in that: The fixing groove is an annular groove, and the position of the fixing groove is arranged corresponding to the position of the coil assembly.

4. The electromagnetic lock cylinder according to claim 1, characterized in that: Also includes a sealing ring; The circumferential side wall of the pressure-bearing magnetic conductive part is in contact with the outer shell, and a sealing groove is provided on the circumferential side wall of the pressure-bearing magnetic conductive part. The sealing ring is placed in the sealing groove to seal between the pressure-bearing magnetic conductive part and the outer shell.

5. The electromagnetic lock cylinder according to claim 1, characterized in that: The housing is provided with an opening so that the base provided with the lock core rod can be arranged at the opening; The side of the moving iron core away from the lock core rod can also be connected to the signal rod of the safety lock, and the shell is provided with a through hole so that the signal rod can pass through the through hole.

6. The electromagnetic lock cylinder according to claim 1, characterized in that: Also includes a wiring terminal, the wiring terminal is electrically connected to the coil assembly through a lead wire; The housing is provided with a mounting groove, the mounting groove is connected with a housing cavity formed by the housing for mounting the coil assembly through a connecting hole, and at least a part of the wiring terminal is mounted in the mounting groove; The installation groove and the connection hole are filled with sealing material.

7. The electromagnetic lock cylinder according to claim 6, characterized in that: The coil assembly is formed by winding enameled wire, and the air gap of the coil assembly is filled with insulating material; The enameled wire, the insulating material and the lead wire can withstand temperatures of -40-220 degrees, have a radiation resistance of 0-1700 KGy, and have an insulation grade of C or H.

8. A safety lock, characterized in that: It comprises the electromagnetic lock cylinder as claimed in any one of claims 1 to 7.

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