Electromagnetic lock and production process thereof

Abstract

The invention belongs to the technical field of electromagnetic locks, and particularly relates to an electromagnetic lock and a production process thereof. Comprising a locking component which is arranged in a cabinet body and is internally provided with a locking structure, a locking component is arranged on the inner side of a door body corresponding to the locking component, when the door body is closed, the locking structure in the locking component can stretch into the locking component to lock the door body, and a grounding component which is arranged in the cabinet body and can be clamped with the locking component is further included. When the grounding part finishes grounding, the clamping connection with the locking part can be released, the grounding part is in transmission connection with a door closing prevention assembly, when the grounding part is in a grounding state, the door closing prevention assembly extends out of the cabinet body to prevent the door body from being closed, and when the grounding part releases the grounding state, the door closing prevention assembly retracts into the cabinet body; when the grounding part is grounded, the door closing prevention assembly extends out of the cabinet body to prevent the door body from being closed, so that operators are reminded of not resetting the grounding part, the operators are prompted to check and complete necessary grounding operation, and the possibility of electrical accidents is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of electromagnetic locks, and in particular relates to an electromagnetic lock and a production process thereof. Background Art

[0002] In the power system, the maintenance and inspection of high-voltage cabinets is an important part of ensuring the safe operation of the system. Before any maintenance or inspection work is carried out, a series of safety measures must be taken, one of which is to perform grounding operations before opening the door of the high-voltage cabinet. Grounding is an important safety measure that can effectively prevent the risk of electric shock caused by insulation damage or other reasons of electrical equipment. By connecting the metal part of the cabinet to the ground, it can be ensured that even in the event of a fault, all current will flow to the ground, thereby protecting the staff from electric shock.

[0003] A Chinese invention patent with publication number CN115206703A discloses an outdoor five-protection electromagnetic lock device, including a cabinet, a cavity is opened inside the cabinet, an inner wall of one side of the cavity is fixedly connected to an electromagnetic lock, an outer wall of the electromagnetic lock is fixedly connected to a lock core device, one end of the lock core device is fixedly connected to a fixing rod, a fixing plate is fixedly installed on the inner wall of the cavity, one end of the fixing rod away from the electromagnetic lock is fixedly connected to the outer wall of the fixing plate, an operating lever is rotatably connected to the inner wall of the cavity, a hole connected to the cavity is opened in the cabinet, the outer wall of the operating lever is movably connected to the inner wall of the hole, and an operating wheel is fixedly connected to the outer wall of one end of the operating lever.

[0004] A Chinese utility model patent with publication number CN210245354U discloses a "five-protection" door interlock mechanism for an electrical cabinet, comprising an auxiliary switch bent plate, a switch shaft, an opening and closing door plate and an interlock plate, wherein one end of the auxiliary switch bent plate is connected to a fixed seat, a top rod is vertically connected to the center of the fixed seat, an interlock plate is extended and fixed to the bottom of the top rod, the opening and closing door plate is connected to the cabinet at one end of the fixed seat, a switch shaft is horizontally connected to the inside of the cabinet above the auxiliary switch bent plate, and an earthing knife is mounted on the outer side wall of the switch shaft, and a fan-shaped opening and closing knife is slidably connected to the switch shaft on one side of the earthing knife.

[0005] The devices in the above patents all drive the internal grounding switch to close by rotating the operating wheel or the grounding switch wheel, and the door body can only be opened after closing, that is, the door body cannot be opened without grounding, thereby ensuring safety. However, after the operating personnel have finished inspecting the equipment inside the door, they forget to reset the internal grounding switch. Starting the equipment will cause a short circuit to the ground, which may cause a fire or explosion, seriously threatening the safety of on-site workers. Summary of the invention

[0006] The purpose of the present invention is to provide an electromagnetic lock and a production process thereof in order to solve the above-mentioned technical problems. When the grounding component is grounded, the anti-closing door assembly extends out of the cabinet to prevent the door from closing, thereby reminding the operators that the grounding component has not been reset, thereby prompting them to check and complete the necessary grounding operations, thereby reducing the possibility of electrical accidents.

[0007] In view of this, the present invention provides an electromagnetic lock, comprising a locking component with a locking structure arranged inside, the locking component is arranged on the side wall inside the cabinet, a door body is hinged on the side of the cabinet away from the locking component, a locking component is arranged on the inner side of the door body corresponding to the locking component, when the door body is closed, the locking structure in the locking component can extend into the locking component to lock the door body, an anti-load isolating switch is arranged in the cabinet, and also includes a grounding component, the grounding component is arranged in the cabinet and can be clamped with the locking component, and the grounding component can be released from the locking component only when the grounding is completed, the grounding component is transmission-connected with an anti-door-closing assembly, when the grounding component is in a grounded state, the anti-door-closing assembly extends out of the cabinet to block the door body from closing, and when the grounding component is released from the grounding state, the anti-door-closing assembly retracts into the cabinet.

[0008] In the present technical solution, before the operator opens the cabinet, he must complete the grounding through the grounding component, and then release the clamping connection between the grounding component and the inner locking component of the door body, and then release the lock of the locking structure through the locking structure in the locking component, so that the door body can be opened smoothly. By ensuring that the grounding component is grounded before the clamping connection is released, the risk of operating the equipment under the power supply state is effectively avoided, thereby reducing the possibility of electric shock accidents. In the case of uncompleted grounding, even if the operator tries to unlock the door, the door body cannot be opened due to the clamping state between the grounding component and the locking component, which effectively prevents safety accidents caused by negligence or misoperation. At the same time, when the grounding component is During grounding, the anti-closing door assembly will extend outward to push out the door body for easy opening. After the inspection and maintenance of the equipment inside the cabinet is completed, the grounding component has not been reset (that is, the grounding is released). At this time, the door body is directly closed and the door body will be limited by the anti-closing door assembly to prevent the door body from closing. This reminds the operators that the grounding component has not been reset, thereby prompting them to check and complete the necessary grounding operations, thereby reducing the possibility of electrical accidents. One hand pushes the door body and the anti-closing door assembly to abut against each other while continuing to give a thrust in the closing direction. The other hand controls the control unit outside the grounding component for grounding. Grounding also drives the anti-closing door assembly to retract into the cabinet, and the door body closes smoothly. At the same time, the grounding component and the recovery and locking components are locked.

[0009] In the above technical solution, further, the locking component includes a locking box, which is connected to the inner side of the door body, a locking hole for the locking structure to enter is arranged at the top of the locking box, and a blocking groove which is engaged with the grounding component is arranged at the bottom.

[0010] In the above technical scheme, further, the grounding component includes a grounding drive rod, one side of the grounding drive rod is rotatably connected to the first support plate in the cabinet, the other side is rotatably connected to the side wall of the door body and is provided with a rocker arm passing through the door body, and the grounding drive rod is provided with a grounding knife switch corresponding to the anti-load isolating switch, the grounding knife switch and the grounding bus are connected through a grounding wire, the grounding knife switch can connect the grounding bus and the anti-load isolating switch to complete grounding, and the grounding drive rod is provided with a locking block perpendicular to the grounding knife switch. In the grounded state, the locking block can be embedded in the blocking groove provided at the bottom of the locking box to prevent the door body from opening outward.

[0011] In the above technical solution, further, the anti-load isolating switch is fixedly connected to the inner wall of the cabinet, the bottom wall of the anti-load isolating switch is provided with a connecting contact plate, the connecting contact plate extends downward to the second support plate, the connecting contact plate is connected to a connecting contact block on the second support plate, and a clamping assembly is provided in front of the connecting contact block, and the clamping assembly can clamp the grounding knife switch that contacts the connecting contact block for grounding.

[0012] In this technical solution, the grounding knife switch and the grounding bar (not shown) are connected by copper wire, and the material of the connecting contact plate is iron. When the grounding knife switch and the connecting contact block are in contact, the load protection isolating switch and the grounding bar can be connected for grounding. When the door is closed, the grounding knife switch is clamped and fixed by the clamping assembly set on the floor of the cabinet. At this time, the blocking block perpendicular to the grounding knife switch is clamped in the blocking groove set at the bottom of the locking box. At this time, even if the locking structure is completely retracted into the locking box, the door body cannot be opened; when the door body needs to be opened, the grounding knife switch and the connecting contact block are driven to contact by rotating the rocker set outside the door body. At the same time, the clamping assembly on the second support plate clamps and fixes the grounding knife switch to ensure the stability of grounding. When the grounding is completed, the blocking block slides out of the blocking groove set at the bottom of the locking box to release the limitation of the locking box, and the door body in the locking box can be opened smoothly.

[0013] In the above technical solution, further, the clamping assembly includes two symmetrically arranged clamping blocks, the clamping blocks include a base plate for fixed connection, a shoulder is formed upward on one side of the base plate, and a clamping portion is formed by an elastic clip on the top of the shoulder.

[0014] In the present technical solution, the base plate of the clamping assembly arranged on the second support plate is threadedly connected to the support plate, and the clamping portion is a non-conductive elastic clip. In the grounded state, the grounding knife switch can pass through the through groove set through the second support plate and be clamped by the clamping portion of the clamp block; in the non-grounded state, the grounding knife switch is disengaged from the clamping assembly on the second support plate, rotated downward until it is vertical and fixed by the clamping assembly on the bottom wall of the cabinet.

[0015] In the above technical solution, further, the anti-closing door assembly includes a third support plate fixedly connected to the inside of the cabinet, a guide rail is provided on the support plate, a slider is slidably provided on the guide rail, an anti-closing door rod is fixedly connected to the top of the slider, a tooth portion is provided on the top of the anti-closing door rod, a first gear is meshed with the tooth portion, and the first gear and the grounding drive rod are coaxially fixedly connected.

[0016] In the present technical solution, when the cabinet needs to be opened, the grounding component is first controlled by turning the rocker to be grounded and the restriction of the locking box on the locking block is released. The grounding drive rod rotates to drive the coaxially connected first gear to rotate synchronously, driving the anti-door closing rod to move outward to push the door body open. If the grounding component is not reset and grounded, the door body will be locked by the anti-door locking rod when it is closed. The operator must push the door body and the anti-door closing component to contact with each other with one hand while continuing to give thrust in the closing direction, and use the other hand to operate the rocker to control the grounding component to be grounded. Grounding also drives the anti-door closing component to retract into the cabinet, and the door body closes smoothly. At the same time, the grounding component and the recovery and locking components are locked.

[0017] In the above technical solution, further, the locking component includes a locking box, a locking structure is arranged in the locking box, the locking structure includes an electromagnetic driving part, a sliding rod is passed through the electromagnetic driving part, a first spring is arranged outside the sliding rod, one end of the first spring is fixedly connected to the electromagnetic driving part, and the other end is fixedly connected to the sliding rod, and the electromagnetic driving part can control the sliding rod to retract into the locking box to unlock.

[0018] In the above technical scheme, further, a control module connected to the electromagnetic drive part is also provided in the locking box, the control module is connected to the communication module, an unlocking port is provided on one side of the locking box, the unlocking key can pass through the unlocking port and collide with the communication module to send an unlocking signal, the unlocking key includes a holding plate, the unlocking module is provided on the holding plate, a locking column is also provided on the holding plate, the locking box is correspondingly provided with a locking channel for inserting the locking column, a locking slot is provided on the locking column, and a key locking device is also provided in the locking box, and the key locking device can limit the locking column after the door body is opened.

[0019] In the present technical solution, the unlocking port is against the side wall of the door body, and the side wall of the door body is correspondingly provided with an unlocking port. When unlocking is required, the locking column on the unlocking key and the locking channel are aligned and inserted until the unlocking module on the unlocking key and the communication module in the locking box are in conflict. The unlocking module sends an unlocking signal, and the electromagnetic drive unit drives the slide rod to be retracted into the locking box. At the same time, the first spring is compressed. After the door body is opened, the locking device shown can limit the unlocking key, and it cannot be pulled out at this time, which can remind the operator that the door body is not closed. At the same time, the door body is not closed because the grounding has not been restored, which serves as a double insurance and can effectively ensure safety.

[0020] In the above technical scheme, further, the key locking device includes a sliding bar fixedly connected to the inner wall of the locking box, a locking block is slidably connected to the sliding bar, a locking pin that can abut against the locking groove is arranged on the top of the locking block, a rotary block is rotatably arranged on the bottom of the locking block, the rotary block is rotatably connected to the fixing pin, one end of the rotary block is connected to a protrusion fixed to the side wall of the locking box through a second spring, and the other end is slidably arranged in a sliding groove opened at the bottom of the locking block, and the rotary block is partially exposed from the locking box. When the door is closed, the locking box can push the rotary block back into the locking box.

[0021] In the present technical solution, when the door body is closed, the top wall of the locking box and the bottom of the locking box abut against each other. At this time, the rotary block is completely in the locking box, and the second spring connected to the "L"-shaped rotary block is in a compressed state. When the door body is opened, the "L"-shaped rotary block slides from the low side to the high side in the sliding groove under the reset drive of the second spring, and the locking block moves upward. The locking pin on the top of the locking block and the positioning slot on the unlocking column abut against each other to complete the limiting. That is, the unlocking key cannot be pulled out. You only need to close the door body again, rotate the rotary block back into the locking box, and the locking block drives the locking pin to move downward and disengage from the positioning slot, so that the unlocking key can be removed smoothly.

[0022] Also included is a production process based on the above electromagnetic lock, comprising the following steps:

[0023] S1: Material preparation, purchasing and inspecting materials such as iron, copper and electronic components to ensure their quality meets production requirements;

[0024] S2: Processing and manufacturing, including processing and manufacturing of locking boxes, closing boxes, locking structures and other parts;

[0025] S3: Parts assembly, assembling the above-mentioned processed parts and processed or purchased electronic components;

[0026] S4: Inspection and testing, various inspections and tests are carried out on the assembled electromagnetic lock, including electrical performance test and mechanical performance test, and the electrical opening and closing function of the locking structure, the mechanical interlocking function of the grounding component, and the key locking function of the key locking structure are tested.

[0027] S5: Packing and shipment: Pack the qualified electromagnetic locks and mark the production date, model, batch and other information, and then ship them out.

[0028] In this technical solution,

[0029] The beneficial effects of the present invention are:

[0030] 1. Before the operator opens the cabinet, the grounding component must be grounded before the clamping connection between the grounding component and the inner locking component of the door can be released, and then the locking structure in the locking component can be released and the locking structure can be locked before the door can be opened smoothly. By ensuring that the grounding component is grounded before the clamping connection is released, the risk of operating the equipment under the power supply state is effectively avoided, thereby reducing the possibility of electric shock accidents. In the case of uncompleted grounding, even if the operator tries to unlock, the door cannot be opened due to the clamping state between the grounding component and the locking component, which effectively prevents safety accidents caused by negligence or misoperation;

[0031] 2. When the grounding component is grounded, the anti-closing door assembly will extend outward to push out the door body for easy opening. After the maintenance of the equipment inside the cabinet is completed, the grounding component is not reset (that is, the grounding is released). At this time, the door body is directly closed, and the door body is limited by the anti-closing door assembly to prevent the door body from closing. This reminds the operator that the grounding component has not been reset, thereby prompting them to check and complete the necessary grounding operations, thereby reducing the possibility of electrical accidents. One hand pushes the door body and the anti-closing door assembly to abut against each other while continuing to give a thrust in the closing direction, and the other hand controls the control unit outside the grounding component for grounding. Grounding also drives the anti-closing door assembly to retract into the cabinet, and the door body is successfully closed. At the same time, the grounding component and the recovery and locking components are locked in position;

[0032] 3. After the door is opened, the locking device shown can limit the unlocking key, and it cannot be pulled out at this time, which can remind the operator that the door is not closed. At the same time, the door is not closed because the grounding is not restored, which serves as a double insurance and can effectively ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0035] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0036] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0037] Figure 5 It is a diagram showing the internal structure of the locking box and the closing box in the locked state;

[0038] Figure 6 This is a schematic diagram of the external structure of the lock box when the door is open;

[0039] Figure 7It is a schematic diagram of part of the structure inside the lock box;

[0040] Figure 8 yes Figure 5 A partial enlarged view of point C in the middle;

[0041] Fig. 9 It is a structural schematic diagram of the unlocking port of the lock box.

[0042] The symbols in the figure are:

[0043] 1. Locking component; 2. Cabinet; 3. Door body; 4. Locking component; 5. Anti-load isolating switch; 6. Grounding component; 7. Anti-closing door assembly; 8. Locking box; 9. Locking hole; 10. Blocking slot; 11. Grounding drive rod; 12. First support plate; 13. Rocker; 14. Grounding knife switch; 15. Positioning block; 16. Connecting contact plate; 17. Second support plate; 18. Connecting contact block; 19. Clamping assembly; 20. Clamping block; 21. Bottom plate; 22. Shoulder; 23. Clamping part of the beam; 24. Third support plate; 25. Guide rail; 26. Slider; 27. Anti-closing door Rod; 28, tooth portion; 29, first gear; 30, rubber layer; 31, locking box; 32, electromagnetic drive unit; 33, slide bar; 34, first spring; 35, control module; 36, communication module; 37, unlocking port; 38, unlocking port; 39, unlocking key; 40, holding plate; 41, unlocking module; 42, locking column; 43, locking channel; 44, positioning slot; 45, slide bar; 46, locking block; 47, locking pin; 48, rotary block; 49, fixing pin; 50, second spring; 51, protrusion; 52, sliding slot; 53, rotary vane; 54, display. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0047] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually 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. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0048] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0049] First embodiment:

[0050] like Figure 1-5 As shown, this embodiment provides an electromagnetic lock, including a locking component 1 with a locking structure arranged inside, the locking component 1 is arranged on the side wall inside the cabinet 2, the cabinet 2 is hinged with a door body 3 on the side away from the locking component 1, and a locking component 4 is arranged on the inner side of the door body 3 corresponding to the locking component 1. When the door body 3 is closed, the locking structure in the locking component 1 can extend into the locking component 4 to lock the door body 3. An anti-load isolation switch 5 is arranged in the cabinet 2, and also includes a grounding component 6. The grounding component 6 is arranged in the cabinet 2 and can be clamped with the locking component 4. The grounding component 6 can be released from the clamping with the locking component 4 only when the grounding is completed. The grounding component 6 is transmission-connected with an anti-closing door assembly 7. When the grounding component 6 is in a grounded state, the anti-closing door assembly 7 extends out of the cabinet 2 to block the door body 3 from closing. When the grounding component 6 is released from the grounding state, the anti-closing door assembly 7 retracts into the cabinet 2.

[0051] Before the operator opens the cabinet 2, the operator must complete the grounding through the grounding component 6, and then release the clamping connection between the grounding component 6 and the locking component 4 on the inner side of the door body 3, and then release the lock of the locking structure in the locking component 1 to successfully open the door body 3. By ensuring that the grounding component 6 is grounded before the clamping connection is released, the risk of operating the equipment under the power supply state is effectively avoided, thereby reducing the possibility of electric shock accidents. In the case of uncompleted grounding, even if the operator tries to unlock the door, the door body 3 cannot be opened due to the clamping state between the grounding component 6 and the locking component 4, which effectively prevents safety accidents caused by negligence or misoperation. At the same time, when the grounding component 6 is grounded, the anti-locking The door assembly 7 will extend outward to push out the door body 3 to facilitate opening of the door body 3. After completing the inspection of the internal equipment of the cabinet 2, the grounding component 6 has not been reset (that is, the grounding is released). At this time, the door body 3 is directly closed, and the door body 3 will be limited by the anti-closing door assembly 7 to prevent the door body 3 from closing, thereby reminding the operator that the grounding component 6 has not been reset, thereby prompting them to check and complete the necessary grounding operations, thereby reducing the possibility of electrical accidents. One hand pushes the door body 3 and the anti-closing door assembly 7 to abut against each other while continuing to give a thrust in the closing direction, and the other hand controls the control part outside the grounding component 6 for grounding. Grounding also drives the anti-closing door assembly 7 to retract into the cabinet 2, and the door body 3 is successfully closed. At the same time, the grounding component 6 and the recovery and locking component 4 are locked in position.

[0052] like Figure 5 As shown, the locking component 4 includes a locking box 8, which is connected to the inner side of the door body 3. The top of the locking box 8 is provided with a locking hole 9 for the locking structure to enter, and the bottom is provided with a blocking groove 10 that is engaged with the grounding component 6.

[0053] like Figure 1-5 As shown, the grounding component 6 includes a grounding drive rod 11, one side of the grounding drive rod 11 is rotatably connected to a first support plate 12 in the cabinet 2, and the other side is rotatably connected to the side wall of the door body 3 and is provided with a rocker arm 13 passing through the door body 3. The grounding drive rod 11 is provided with a grounding knife switch 14 corresponding to the anti-load isolating switch 5. The grounding knife switch 14 and the grounding bus are connected through a grounding wire. The grounding knife switch 14 can connect the grounding bus and the anti-load isolating switch 5 to complete grounding. The grounding drive rod 11 is provided with a blocking block 15 perpendicular to the grounding knife switch 14. In the grounded state, the blocking block 15 can be embedded in the blocking groove 10 provided at the bottom of the locking box 8 to prevent the door body 3 from opening outward.

[0054] The anti-load isolating switch 5 is fixedly connected to the inner wall of the cabinet 2. A connecting contact plate 16 is provided on the bottom wall of the anti-load isolating switch 5. The connecting contact plate 16 extends downward to the second support plate 17. The connecting contact plate 16 is connected to a connecting contact block 18 on the second support plate 17. A clamping assembly 19 is provided in front of the connecting contact block 18. The clamping assembly 19 can clamp the grounding knife switch 14 that contacts the connecting contact block 18 for grounding.

[0055] The grounding switch 14 and the grounding bar (not shown) are connected by copper wire, and the material of the connecting contact plate 16 is iron. When the grounding switch 14 and the connecting contact block 18 abut, the load protection isolating switch 5 and the grounding bar can be connected and grounded. When the door body 3 is closed, the grounding switch 14 is clamped and fixed by the clamping assembly 19 arranged on the ground of the cabinet body 2. At this time, the blocking block 15 perpendicular to the grounding switch 14 is clamped in the blocking groove 10 arranged at the bottom of the locking box 8. At this time, even if the locking structure is completely retracted into the locking box 31, the door body 3 cannot be opened; when the door body 3 needs to be opened, the grounding switch 14 is driven to contact the connecting contact block 18 by rotating the rocker 13 arranged outside the door body 3. At the same time, the clamping assembly 19 on the second support plate 17 clamps and fixes the grounding switch 14 to ensure the grounding stability. When the grounding is completed, the blocking block 15 slides out of the blocking groove 10 arranged at the bottom of the locking box 8 to release the limitation of the locking box 8, and the door body 3 in the locking box 31 can be smoothly opened.

[0056] like Figure 2 and Figure 3 As shown, the clamping assembly 19 includes two symmetrically arranged clamping blocks 20, and the clamping blocks 20 include a base plate 21 for fixed connection, a shoulder 22 is formed upward on one side of the base plate 21, and a clamping portion 23 is formed on the top of the shoulder 22 by an elastic clip.

[0057] The bottom plate 21 of the clamping assembly 19 arranged on the second support plate 17 is threadedly connected to the support plate, and the clamping portion 23 is a non-conductive elastic clip. In the grounded state, the grounding switch 14 can pass through the through groove set on the second support plate 17 and be clamped by the clamping portion 23 of the clamping block 20; in the ungrounded state, the grounding switch 14 is disengaged from the clamping assembly 19 on the second support plate 17, rotated downward until it is vertical and fixed by the clamping assembly 19 on the bottom wall of the cabinet 2.

[0058] like Figure 2 and Figure 4 As shown, the anti-closing door assembly 7 includes a third support plate 24 fixedly connected to the inside of the cabinet 2, a guide rail 25 is arranged on the support plate, a slider 26 is slidably arranged on the guide rail 25, an anti-closing door rod 27 is fixedly connected to the top of the slider 26, a tooth portion 28 is arranged on the top of the anti-closing door rod 27, a first gear 29 is meshed with the tooth portion 28, and the first gear 29 is coaxially fixedly connected to the grounding drive rod 11.

[0059] When it is necessary to open the cabinet 2, first control the grounding component 6 to be grounded by turning the rocker 13 and release the restriction of the locking box 8 on the locking block 15. The grounding drive rod 11 rotates to drive the coaxially connected first gear 29 to rotate synchronously, driving the anti-closing rod 27 to move outward to open the door body 3. If the grounding component 6 is not reset and grounded, the door body 3 will be locked by the anti-locking rod when it is closed. The operator must push the door body 3 and the anti-closing door component 7 into contact with each other with one hand while continuing to give a thrust in the closing direction, and use the other hand to control the grounding component to be grounded. Grounding also drives the anti-closing door component 7 to retract into the cabinet 2, and the door body 3 is successfully closed. At the same time, the grounding component 6 and the recovery and locking component 4 are locked in position.

[0060] like Figure 5 As shown, the locking component 1 includes a locking box 31, and a locking structure is arranged in the locking box 31. The locking structure includes an electromagnetic driving part 32. The electromagnetic driving part 32 is penetrated by a sliding rod 33, and the sliding rod 33 is covered with a first spring 34. One end of the first spring 34 is fixedly connected to the electromagnetic driving part 32, and the other end is fixedly connected to the sliding rod 33. The electromagnetic driving part 32 can control the sliding rod 33 to retract into the locking box 31 for unlocking.

[0061] The production process of the electromagnetic lock is characterized by comprising the following steps:

[0062] S1: Material preparation, purchasing and inspecting materials such as iron, copper and electronic components to ensure their quality meets production requirements;

[0063] S2: Processing and manufacturing, processing and manufacturing the locking box 31, the closing box 8, the locking structure and other parts;

[0064] S3: Parts assembly, assembling the above-mentioned processed parts and processed or purchased electronic components;

[0065] S4: Inspection and testing, various inspections and tests are performed on the assembled electromagnetic lock, including electrical performance tests and mechanical performance tests, and the electrical unlocking and locking functions of the locking structure, the mechanical interlocking function of the grounding component 6, and the key locking structure's unlocking key 39 locking function are tested.

[0066] S5: Packing and shipment: Pack the qualified electromagnetic locks and mark the production date, model, batch and other information, and then ship them out.

[0067] Second embodiment:

[0068] This embodiment provides an electromagnetic lock and a production process thereof, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0069] A control module 35 connected to the electromagnetic drive unit 32 is also provided in the locking box 31, and the control module 35 is connected to the communication module 36. An unlocking port 37 is provided on one side of the locking box 31, and an unlocking key 39 can pass through the unlocking port 37 and contact the communication module 36 to send an unlocking signal. The unlocking key 39 includes a holding plate 40, and an unlocking module 41 is provided on the holding plate 40. A locking column 42 is also provided on the holding plate 40. The locking box 31 is correspondingly provided with a locking channel 43 for inserting the locking column 42, and a locking groove 44 is provided on the locking column 42. A key locking device is also provided in the locking box 31, and the key locking device can limit the locking column 42 after the door body 3 is opened.

[0070] The unlocking opening 37 is against the side wall of the door body 3, and the side wall of the door body 3 is correspondingly provided with an unlocking opening 38. When unlocking is required, the locking column 42 and the locking channel 43 on the unlocking key 39 are aligned and inserted until the unlocking module 41 on the unlocking key 39 and the communication module 36 in the locking box 31 are in conflict. The unlocking module 41 sends an unlocking signal, and the electromagnetic drive unit 32 drives the slide rod 33 to be retracted into the locking box 31. At the same time, the first spring 34 is compressed. After the door body 3 is opened, the positioning device shown can limit the unlocking key 39, and it cannot be pulled out at this time, which can remind the operator that the door body 3 is not closed. At the same time, the door body 3 is not closed because the grounding has not been restored, which serves as a double insurance and can effectively ensure safety.

[0071] like Figure 5-7 As shown, the key locking device includes a slide bar 45 fixedly connected to the inner wall of the locking box 31, a locking block 46 is slidably connected to the slide bar 45, a locking pin 47 capable of abutting against the locking groove 44 is arranged on the top of the locking block 46, a rotary block 48 is rotatably arranged at the bottom of the locking block 46, the rotary block 48 is rotatably connected to the fixing pin 49, one end of the rotary block 48 is connected to a protrusion 51 fixed to the side wall of the locking box 31 through a second spring 50, and the other end is slidably arranged in a sliding groove 52 opened at the bottom of the locking block 46, the rotary block 48 is partially exposed from the locking box 31, and when the door is closed, the locking box 8 can push the rotary block 48 back into the locking box 31.

[0072] When the door body 3 is closed, the top wall of the locking box 8 abuts against the bottom of the locking box 31. At this time, the rotary block 48 is completely in the locking box 31, and the second spring 50 connected to the "L"-shaped rotary block 48 is in a compressed state. When the door body 3 is opened, the "L"-shaped rotary block 48 slides from the low side to the high side in the sliding groove 52 under the reset drive of the second spring 50, and the locking block 46 moves upward. The locking pin 47 at the top of the locking block 46 and the locking groove 44 on the unlocking column abut to complete the limit, that is, the unlocking key 39 cannot be pulled out. Just close the door body 3 again, rotate the rotary block 48 back into the locking box 31, and the locking block 46 drives the locking pin 47 to move downward to disengage from the locking groove 44, so that the unlocking key 39 can be smoothly removed.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electromagnetic lock, comprising a locking component (1) with a locking structure arranged therein, the locking component (1) being arranged on a side wall inside a cabinet (2), a door body (3) being hingedly connected to a side of the cabinet (2) away from the locking component (1), a locking component (4) being arranged on the inner side of the door body (3) corresponding to the locking component (1), when the door body (3) is closed, the locking structure in the locking component (1) can extend into the locking component (4) to lock the door body (3), an anti-load isolating switch (5) is arranged in the cabinet (2), characterized in that: The cabinet further comprises a grounding component (6), which is arranged in the cabinet body (2) and can be engaged with the locking component (4). The grounding component (6) can be released from the locking component (4) only when the grounding component (6) is grounded. The grounding component (6) is drivingly connected to an anti-closing door assembly (7). When the grounding component (6) is in a grounded state, the anti-closing door assembly (7) extends out of the cabinet body (2) to block the door body (3) from closing. When the grounding component (6) is released from the grounding state, the anti-closing door assembly (7) retracts into the cabinet body (2).

2. The electromagnetic lock according to claim 1, characterized in that: The locking component (4) comprises a locking box (8), which is connected to the inner side of the door body (3), the top of the locking box (8) is provided with a locking hole (9) for the locking structure to enter, and the bottom of the locking box (8) is provided with a blocking groove (10) which is engaged with the grounding component (6).

3. The electromagnetic lock according to claim 2, characterized in that: The grounding component (6) comprises a grounding drive rod (11), one side of the grounding drive rod (11) is rotatably connected to a first support plate (12) in the cabinet (2), and the other side is rotatably connected to a side wall of the door body (3) and is provided with a rocker (13) passing through the door body (3); a grounding knife switch (14) is provided on the grounding drive rod (11) corresponding to the anti-load isolating switch (5); the grounding knife switch (14) and the grounding bar are connected via a grounding wire; the grounding knife switch (14) can connect the grounding bar and the anti-load isolating switch (5) to complete grounding; a blocking block (15) perpendicular to the grounding knife switch (14) is provided on the grounding drive rod (11); in a grounded state, the blocking block (15) can be embedded in a blocking groove (10) provided at the bottom of the locking box (8) to prevent the door body (3) from opening outwards.

4. The electromagnetic lock according to claim 3, characterized in that: The anti-load isolating switch (5) is fixedly connected to the inner wall of the cabinet (2); a connecting contact plate (16) is arranged on the bottom wall of the anti-load isolating switch (5); the connecting contact plate (16) extends downward to a second supporting plate (17); a connecting contact block (18) is connected to the connecting contact plate (16) on the second supporting plate (17); a clamping assembly (19) is arranged in front of the connecting contact block (18); the clamping assembly (19) can clamp a grounding knife switch (14) that contacts the connecting contact block (18) for grounding.

5. The electromagnetic lock according to claim 4, characterized in that: The clamping assembly (19) comprises two symmetrically arranged clamping blocks (20), the clamping blocks (20) comprising a base plate (21) for fixed connection, a shoulder (22) is formed upward on one side of the base plate (21), and a clamping portion (23) is formed on the top of the shoulder (22) by an elastic clip.

6. The electromagnetic lock according to claim 3, characterized in that: The anti-closing door assembly (7) comprises a third support plate (24) fixedly connected to the inside of the cabinet (2), a guide rail (25) being arranged on the support plate, a slider (26) being slidably arranged on the guide rail (25), an anti-closing door rod (27) being fixedly connected to the top of the slider (26), a toothed portion (28) being arranged at the top of the anti-closing door rod (27), a first gear (29) being meshed with the toothed portion (28), and the first gear (29) being coaxially fixedly connected to the grounding drive rod (11).

7. The electromagnetic lock according to claim 1, characterized in that: The locking component (1) comprises a locking box (31), a locking structure is arranged in the locking box (31), and the locking structure comprises an electromagnetic driving part (32), a sliding rod (33) is passed through the electromagnetic driving part (32), and a first spring (34) is arranged on the outer sleeve of the sliding rod (33), one end of the first spring (34) is fixedly connected to the electromagnetic driving part (32), and the other end is fixedly connected to the sliding rod (33), and the electromagnetic driving part (32) can control the sliding rod (33) to retract into the locking box (31) to unlock.

8. The electromagnetic lock according to claim 2, characterized in that: The locking box (31) is also provided with a control module (35) connected to the electromagnetic drive unit (32), the control module (35) is connected to a communication module (36), a lock opening (37) is provided on one side of the locking box (31), an unlocking key (39) can pass through the lock opening (37) and contact the communication module (36) to send an unlocking signal, the unlocking key (39) comprises a gripping plate (40), an unlocking module (41) is provided on the gripping plate (40), a locking column (42) is also provided on the gripping plate (40), a locking channel (43) for the locking column (42) to be inserted is correspondingly provided on the locking box (31), a locking groove (44) is provided on the locking column (42), and a key locking device is also provided in the locking box (31), the key locking device can limit the locking column (42) after the door body (3) is opened.

9. The electromagnetic lock according to claim 8, characterized in that: The key locking device comprises a slide bar (45) fixedly connected to the inner wall of the locking box (31), a locking block (46) being slidably connected to the slide bar (45), a locking pin (47) being arranged on the top of the locking block (46) and being able to abut against the locking groove (44), a rotary block (48) being rotatably arranged at the bottom of the locking block (46), the rotary block (48) being rotatably connected to the fixing pin (49), one end of the rotary block (48) being connected to a protrusion (51) fixed to the side wall of the locking box (31) through a second spring (50), and the other end being slidably arranged in a sliding groove (52) provided at the bottom of the locking block (46), the rotary block (48) being partially exposed from the locking box (31), and when the door is closed, the locking box (8) can push the rotary block (48) to be retracted into the locking box (31).

10. A production process of an electromagnetic lock according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Material preparation, purchasing and inspecting materials such as iron, copper and electronic components to ensure their quality meets production requirements; S2: Processing and manufacturing, processing and manufacturing the locking box (31), the closing box (8), the locking structure and other parts; S3: Parts assembly, assembling the above-mentioned processed parts and processed or purchased electronic components; S4: Testing and testing, performing various tests and tests on the assembled electromagnetic lock, including electrical performance test and mechanical performance test, testing the electrical unlocking and locking function of the locking structure, the mechanical interlocking function of the grounding component (6), and the locking function of the key locking structure for the unlocking key (39); S5: Packing and shipment: Pack the qualified electromagnetic locks and mark the production date, model, batch and other information, and then ship them out.

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