Electromagnetic lock and process for its production

Abstract

The present application belongs to the technical field of electromagnetic lock, and particularly relates to an electromagnetic lock and a production process thereof; the electromagnetic lock comprises a locking component arranged in a cabinet body and 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 extend into the locking component to lock the door body, the electromagnetic lock further comprises a grounding component, the grounding component is arranged in the cabinet body and can be clamped with the locking component, the grounding component can be unclamped with the locking component only when grounding is completed, the grounding component is drivingly connected with an anti-closed door assembly, in the grounding state of the grounding component, the anti-closed door assembly extends out of the cabinet body to block the door body from being closed, when the grounding state of the grounding component is released, the anti-closed door assembly is retracted into the cabinet body; when the grounding component is grounded, the anti-closed door assembly extends out of the cabinet body to block the door body from being closed, so as to remind the operating personnel that the grounding component has not been reset, thereby prompting them to check and complete the necessary grounding operation, and thus the possibility of electrical accidents is reduced.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic lock technology, and particularly relates to an electromagnetic lock and its manufacturing process. Background Technology

[0002] In power systems, the maintenance and inspection of high-voltage switchgear is a crucial aspect of ensuring safe system operation. Before any maintenance or inspection work, a series of safety measures must be taken, one of which is grounding before opening the high-voltage switchgear door. Grounding is an important safety measure that effectively prevents the risk of electric shock from electrical equipment due to insulation damage or other reasons. By connecting the metal parts of the switchgear to the ground, it ensures that even in the event of a fault, all current flows to the ground, thus protecting workers from electric shock.

[0003] Chinese invention patent CN115206703A discloses an outdoor five-proof electromagnetic lock device, including a cabinet. The cabinet has an internal cavity. An electromagnetic lock is fixedly connected to one inner wall of the cavity. A lock cylinder device is fixedly connected to the outer wall of the electromagnetic lock. A fixing rod is fixedly connected to one end of the lock cylinder device. A fixing plate is fixedly installed on the inner wall of the cavity. The 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. The cabinet has a hole communicating with the cavity. The outer wall of the operating lever is movably connected to the inner wall of the hole. An operating wheel is fixedly connected to the outer wall of one end of the operating lever.

[0004] Chinese utility model patent with publication number CN210245354U discloses a "five-proof" door interlocking mechanism for an electrical cabinet, including an auxiliary switch bend plate, a switch shaft, an opening and closing door panel, and an interlocking plate. One end of the auxiliary switch bend plate is connected to a fixed base, and a top rod is vertically connected to the center of the fixed base. The bottom of the top rod extends and is fixed to the interlocking plate. The opening and closing door panel is connected to the cabinet at one end of the fixed base. A switch shaft is horizontally connected inside the cabinet above the auxiliary switch bend plate, and a grounding switch is fitted on the outer wall of the switch shaft. A fan-shaped opening and closing switch is slidably connected to the switch shaft on one side of the grounding switch.

[0005] The devices in the above patents all use a rotating control wheel or grounding switch wheel to drive the internal grounding switch to close. The door can only be opened after the switch is closed. That is, the door cannot be opened without grounding, which ensures safety. However, if the workers forget to reset the internal grounding switch after the maintenance of the equipment inside the door, starting the equipment will cause a short circuit to the ground, which may cause a fire or explosion, seriously threatening the safety of the on-site workers. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned technical problems by providing an electromagnetic lock and its manufacturing process. When the grounding component is grounded, the anti-closing door assembly extends out of the cabinet to block the door from closing, thereby reminding the operator that the grounding component has not been reset, prompting them to check and complete the necessary grounding operations, thus reducing the possibility of electrical accidents.

[0007] In view of this, the present invention provides an electromagnetic lock, including a locking component with an internal locking structure, the locking component being disposed on the side wall of a cabinet, a door being hinged to the side of the cabinet away from the locking component, and a closing component being disposed on the inner side of the door corresponding to the locking component. When the door is closed, the locking structure inside the locking component can extend into the closing component to lock the door. An anti-load disconnect switch is disposed inside the cabinet, and a grounding component is also included. The grounding component is disposed inside the cabinet and can engage with the closing component. The engagement with the closing component can only be released when the grounding component is grounded. The grounding component is drivenly connected to an anti-closing door assembly. When the grounding component is grounded, the anti-closing door assembly extends out of the cabinet to prevent the door from closing. When the grounding component is de-grounded, the anti-closing door assembly retracts into the cabinet.

[0008] In this technical solution, before opening the cabinet, the operator must complete grounding through the grounding component. Only then can the locking mechanism between the grounding component and the inner locking mechanism of the door be released. The locking mechanism within the locking component must then be released, and the locking mechanism must be engaged before the door can be opened smoothly. By ensuring that the grounding component is grounded before releasing the locking mechanism, the risk of operating the equipment while it is energized is effectively avoided, thus reducing the possibility of electric shock. If grounding is not completed, even if the operator attempts to unlock the door, it cannot be opened due to the locking mechanism between the grounding component and the locking mechanism. This effectively prevents safety accidents caused by negligence or misoperation. Furthermore, when the grounding component… When grounding is performed, the anti-closing door assembly extends outward to push the door open. After the maintenance of the equipment inside the cabinet is completed, if the grounding component is not reset (i.e., grounding is released), and the door is closed directly, the anti-closing door assembly will limit the door to prevent it from closing. This serves as a reminder to the workers that the grounding component has not been reset, prompting them to check and complete the necessary grounding operations, thereby reducing the possibility of electrical accidents. One hand pushes the door and the anti-closing door assembly to contact while continuing to apply a closing force, and the other hand operates the control unit outside the grounding component to perform grounding. At the same time, the grounding component retracts into the cabinet, and the door closes smoothly. Simultaneously, the grounding component and the reset and locking components are locked in place.

[0009] In the above technical solution, the locking component further includes a locking box, which is connected to the inside of the door. The top of the locking box is provided with a locking hole for the locking structure to enter, and the bottom is provided with a blocking groove that engages with the grounding component.

[0010] In the above technical solution, the grounding component further includes a grounding drive rod. One side of the grounding drive rod is rotatably connected to a first support plate inside the cabinet, and the other side is rotatably connected to the side wall of the door and has a rocker arm installed through the door. A grounding knife switch is installed on the grounding drive rod corresponding to the anti-load disconnect switch. The grounding knife switch and the grounding busbar are connected by a grounding wire. The grounding knife switch can connect the grounding busbar and the anti-load disconnect switch to complete the grounding. A locking block perpendicular to the grounding knife switch is installed on the grounding drive rod. In the grounding state, the locking block can be embedded in the blocking groove provided at the bottom of the locking box to prevent the door from opening outward.

[0011] In the above technical solution, furthermore, the overload disconnect switch is fixedly connected to the inner wall of the cabinet. A connecting contact plate is provided on the bottom wall of the overload disconnect switch, extending downwards to a second support plate. A connecting contact block is connected to the connecting contact plate on the second support plate. A clamping assembly is provided in front of the connecting contact block, capable of clamping the grounding switch that is grounded by contacting the connecting contact block.

[0012] In this technical solution, the grounding switch and the grounding busbar (not shown) are connected by copper wire. The connecting contact plate is made of iron. When the grounding switch and the connecting contact block abut, the load-blocking disconnect switch and the grounding busbar can be connected for grounding. When the door is closed, the grounding switch is clamped and fixed by the clamping assembly set on the cabinet floor. At this time, the locking block perpendicular to the grounding switch is locked in the resistance groove set at the bottom of the locking box. Even if the locking structure is fully retracted into the locking box, the door cannot be opened. When it is necessary to open the door, the rocker arm set on the outside of the door is rotated, which causes the grounding switch and the connecting contact block to abut. At the same time, the clamping assembly on the second support plate clamps and fixes the grounding switch to ensure grounding stability. When grounding is completed, the locking block slides out from the resistance groove set at the bottom of the locking box, releasing the restriction on the locking box, and the door inside the locking box can be opened smoothly.

[0013] In the above technical solution, the clamping assembly further includes two symmetrically arranged clamping blocks. Each clamping block includes a base plate for fixed connection. One side of the base plate forms an upward shoulder, and the top of the shoulder forms a clamping part with an elastic clamping piece.

[0014] In this technical solution, the clamping component base plate and the support plate are threadedly connected on the second support plate. The clamping part is a non-conductive elastic clip. In the grounded state, the grounding switch can pass through the through slot provided on the second support plate and be clamped by the clamping part of the clamping block. In the non-grounded state, the grounding switch and the clamping component on the second support plate are disengaged, rotate downward until they are vertical and are fixed by the clamping component on the bottom wall of the cabinet.

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

[0016] In this technical solution, when the cabinet needs to be opened, the grounding component is first grounded by rotating the rocker arm, and the restriction on the locking block to the locking box is released. The grounding drive rod rotates, causing the first gear connected in the same axis to rotate synchronously, which drives the anti-locking door rod to move outward and open the door. If the grounding component is not reset to ground, the door will be locked by the anti-locking door rod when it closes. The operator must push the door and the anti-locking door assembly with one hand while continuing to apply a pushing force in the closing direction, and operate the rocker arm with the other hand to control the grounding component to ground. At the same time, the anti-locking door assembly is driven to retract into the cabinet, and the door closes smoothly. At the same time, the grounding component and the locking and locking components are locked.

[0017] In the above technical solution, the locking component further includes a locking box, and a locking structure is provided inside the locking box. The locking structure includes an electromagnetic drive unit, through which a slide rod passes. A first spring is provided on the slide rod, with one end of the first spring fixedly connected to the electromagnetic drive unit and the other end fixedly connected to the slide rod. The electromagnetic drive unit can control the slide rod to retract into the locking box to unlock.

[0018] In the above technical solution, the lock box is further provided with a control module connected to the electromagnetic drive unit. The control module is connected to a communication module. An unlocking port is provided on one side of the lock box. The unlocking key can pass through the unlocking port and abut against the communication module to send an unlocking signal. The unlocking key includes a grip plate, an unlocking module is provided on the grip plate, and a locking pin is also provided on the grip plate. The lock box is provided with a corresponding locking channel for the locking pin to be inserted. A locking slot is provided on the locking pin. The lock box is also provided with a key locking device, which can limit the locking pin after the door is opened.

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

[0020] In the above technical solution, the key locking device further includes a slide bar fixedly connected to the inner wall of the lock box, a locking block slidably connected to the slide bar, a locking pin that can abut against the locking groove on the top of the locking block, a rotating block rotatably connected to the bottom of the locking block, the rotating block being rotatably connected to a fixing pin, one end of the rotating block being connected to a protrusion fixed to the side wall of the lock box via a second spring, and the other end being slidably disposed in a sliding groove opened at the bottom of the locking block, with the rotating block partially protruding from the lock box, and when the door is closed, the locking box can push the rotating block back into the lock box.

[0021] In this technical solution, when the door is closed, the top wall of the locking box and the bottom of the upper locking box abut against each other. At this time, the rotating block is completely inside the upper locking box, and the second spring connected to the "L"-shaped rotating block is in a compressed state. When the door is opened, the "L"-shaped rotating block slides from the lower side to the higher side in the sliding groove under the reset action of the second spring. The locking block moves upward, and the locking pin at the top of the locking block abuts against the locking groove on the unlocking pin to complete the limit, that is, the unlocking key cannot be pulled out. Simply close the door again, the rotating block rotates back into the upper locking box, and the locking block drives the locking pin to move downward and disengage from the locking groove, so that the unlocking key can be easily removed.

[0022] It also includes the manufacturing process based on the above-mentioned electromagnetic lock, including the following steps:

[0023] S1: Material preparation, including the procurement and inspection of materials such as iron and copper, as well as electronic components, to ensure that their quality meets production requirements;

[0024] S2: Processing and manufacturing, processing and manufacturing of components such as lock boxes, locking boxes, and locking structures;

[0025] S3: Parts assembly, which involves assembling the processed parts and the processed or purchased electronic components.

[0026] S4: Testing and Inspection. Various tests and inspections are conducted on the assembled electromagnetic lock, including electrical performance tests and mechanical performance tests. The electrical locking and unlocking functions of the locking structure, the mechanical interlocking function of the grounding components, and the key locking structure are tested for their key locking function.

[0027] S5: Packaging and shipping. Pack the qualified electromagnetic locks and mark them with information such as production date, model, and batch number, and then ship them out.

[0028] In this technical solution,

[0029] The beneficial effects of this invention are:

[0030] 1. Before opening the cabinet, operators must ensure that the grounding component is properly grounded before releasing the locking mechanism between the grounding component and the inner locking mechanism of the door. Then, the locking mechanism inside the locking component must be released to unlock the door. Only then can the door be opened smoothly. Ensuring that the grounding component is properly grounded before releasing the locking mechanism effectively avoids the risk of operating the equipment while it is energized, thereby reducing the possibility of electric shock accidents. If the grounding is not completed, even if the operator attempts to unlock the door, the door cannot be opened due to the locking state between the grounding component and the locking mechanism. This 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 to facilitate door opening. After the maintenance of the equipment inside the cabinet is completed, if the grounding component is not reset (i.e., the grounding is released), and the door body is closed directly, 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 operation, thus 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 apply a pushing force in the closing direction. The other hand operates the control unit outside the grounding component to ground. At the same time, the grounding component drives the anti-closing door assembly to retract into the cabinet body, and the door body closes smoothly. At the same time, the grounding component and the locking and unlocking components are locked in place.

[0032] 3. After the door is opened, the locking device can limit the unlocking key, preventing it from being pulled out. This serves as a reminder to the operator that the door is not closed, and that the door is not closed because the ground has not been restored, providing double protection and effectively ensuring safety. Attached Figure Description

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

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

[0035] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0036] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0037] Figure 5 This is a diagram showing the internal structure of the locking box and the closed box when they are locked.

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

[0039] Figure 7This is a partial structural diagram of the inside of the lock box;

[0040] Figure 8 yes Figure 5 A magnified view of a section at point C;

[0041] Figure 9 This is a structural diagram of the lock opening of the lock box.

[0042] The markings in the diagram are as follows:

[0043] 1. Locking component; 2. Cabinet body; 3. Door body; 4. Locking component; 5. Overload isolation switch; 6. Grounding component; 7. Anti-close-up door assembly; 8. Locking box; 9. Locking hole; 10. Resistance groove; 11. Grounding drive rod; 12. First support plate; 13. Rocker arm; 14. Grounding knife switch; 15. Locking block; 16. Connecting contact plate; 17. Second support plate; 18. Connecting contact block; 19. Clamping assembly; 20. Clamping block; 21. Base plate; 22. Shoulder platform; 23. Clamping part; 24. Third support plate; 25. Guide rail; 26. Slider; 27. Anti-close-up door 28. Rod; 29. ​​Tooth; 30. First gear; 31. Rubber layer; 32. Locking box; 33. Electromagnetic drive unit; 34. Slide rod; 35. First spring; 36. Control module; 37. Communication module; 38. Unlocking port; 39. Unlocking key; 40. Grip plate; 41. Unlocking module; 42. Locking pin; 43. Locking channel; 44. Locking slot; 45. Slide bar; 46. Locking block; 47. Locking pin; 48. Rotating block; 49. Fixing pin; 50. Second spring; 51. Protrusion; 52. Sliding groove; 53. Rotating plate; 54. Display. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0048] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, 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 an internal locking structure. The locking component 1 is located on the side wall inside a cabinet 2. A door 3 is hinged to the side of the cabinet 2 away from the locking component 1. A locking component 4 is located on the inner side of the door 3 corresponding to the locking component 1. When the door 3 is closed, the locking structure inside the locking component 1 can extend into the locking component 4 to lock the door 3. An anti-load isolation switch 5 is provided inside the cabinet 2. The lock also includes a grounding component 6, which is located inside the cabinet 2 and can engage with the locking component 4. The grounding component 6 can only disengage from the locking component 4 after it has been grounded. The grounding component 6 is connected to an anti-closing door assembly 7. When the grounding component 6 is grounded, the anti-closing door assembly 7 extends out of the cabinet 2 to prevent the door 3 from closing. When the grounding component 6 is de-grounded, the anti-closing door assembly 7 retracts into the cabinet 2.

[0051] Before opening cabinet 2, operators must ensure grounding via grounding component 6 before releasing the locking mechanism 4 inside door 3. Then, the locking mechanism inside locking component 1 must be released, and the locking mechanism locked before door 3 can be opened smoothly. Ensuring grounding component 6 is completed before releasing the locking mechanism effectively avoids the risk of operating the equipment while it is energized, thus reducing the possibility of electric shock. Without proper grounding, even if operators attempt to unlock the cabinet, door 3 cannot be opened due to the locking mechanism between grounding component 6 and locking component 4. This effectively prevents safety accidents caused by negligence or misoperation. Simultaneously, when grounding component 6 is grounded, it prevents closure... Door assembly 7 extends outward to push out door 3 for easy opening. After the maintenance of the equipment inside cabinet 2 is completed, grounding component 6 is not reset (i.e., grounding is released). At this time, if door 3 is closed directly, door 3 will be limited by anti-closing door assembly 7 to prevent door 3 from closing. This reminds the operator that grounding component 6 has not been reset, prompting them to check and complete the necessary grounding operation, thereby reducing the possibility of electrical accidents. One hand pushes door 3 and anti-closing door assembly 7 to contact each other while continuing to apply a closing force. The other hand operates the control unit outside grounding component 6 to ground. At the same time, grounding drives anti-closing door assembly 7 to retract into cabinet 2, and door 3 closes smoothly. At the same time, grounding component 6 and the locking and unlocking component 4 are locked in place.

[0052] like Figure 5 As shown, the locking component 4 includes a locking box 8, which is connected to the inside 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 stop groove 10 that engages 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 the first support plate 12 inside the cabinet 2, and the other side is rotatably connected to the side wall of the door 3 and has a rocker arm 13 extending through the door 3. A grounding knife switch 14 is provided on the grounding drive rod 11 corresponding to the anti-load isolation switch 5. The grounding knife switch 14 and the grounding busbar are connected by a grounding wire. The grounding knife switch 14 can connect the grounding busbar and the anti-load isolation switch 5 to complete the grounding. A locking block 15 is provided on the grounding drive rod 11 perpendicular to the grounding knife switch 14. In the grounding state, the locking block 15 can be embedded in the blocking groove 10 provided at the bottom of the locking box 8 to prevent the door 3 from opening outward.

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

[0055] The grounding switch 14 and the grounding busbar (not shown) are connected by copper wire. The material of the connecting contact plate 16 is iron. When the grounding switch 14 and the connecting contact block 18 abut, the load isolation switch 5 and the grounding busbar can be connected for grounding. When the door 3 is closed, the grounding switch 14 is clamped and fixed by the clamping assembly 19 set on the ground of the cabinet 2. At this time, the locking block 15, which is perpendicular to the grounding switch 14, is locked in the blocking groove 10 set 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 3 cannot be opened. When it is necessary to open the door 3, the rocker arm 13 set on the outside of the door 3 is rotated to drive the grounding switch 14 and the connecting block 18 to abut. At the same time, the clamping assembly 19 on the second support plate 17 clamps and fixes the grounding switch 14 to ensure grounding stability. While the grounding is completed, the locking block 15 slides out from the blocking groove 10 set at the bottom of the locking box 8 to release the restriction on the locking box 8, and the door 3 can be opened smoothly inside the locking box 31.

[0056] like Figure 2 and Figure 3 As shown, the clamping assembly 19 includes two symmetrically arranged clamping blocks 20. Each clamping block 20 includes a base plate 21 for fixed connection. One side of the base plate 21 forms a shoulder 22 facing upwards, and the top of the shoulder 22 is formed by an elastic clamping piece to form a clamping part 23.

[0057] The clamping assembly 19, which is mounted on the second support plate 17, is threadedly connected to the base plate 21 and the support plate. The clamping part 23 is a non-conductive elastic clip. In the grounded state, the grounding switch 14 can pass through the through slot provided on the second support plate 17 and be clamped by the clamping part 23 of the clamping block 20. In the non-grounded state, the grounding switch 14 disengages from the clamping assembly 19 on the second support plate 17, rotates downward until it is vertical and is 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 provided on the support plate, and a slider 26 is slidably provided on the guide rail 25. An anti-closing door rod 27 is fixedly connected to the top of the slider 26. A toothed part 28 is provided at the top of the anti-closing door rod 27. The toothed part 28 meshes with a first gear 29. The first gear 29 and the grounding drive rod 11 are coaxially fixedly connected.

[0059] When cabinet 2 needs to be opened, first turn the rocker arm 13 to control the grounding component 6 to ground and release the restriction on the locking block 15 to the locking box 8. The grounding drive rod 11 rotates and drives the first gear 29 connected to the same axis to rotate synchronously, which drives the anti-closing door rod 27 to move outward and push open the door 3. If the grounding component 6 does not reset the grounding, the door 3 will be locked by the anti-locking door rod when it is closed. The operator must push the door 3 and the anti-closing door assembly 7 with one hand while continuing to apply the closing force, and operate the rocker arm 13 with the other hand to control the grounding component to ground. At the same time as grounding, the anti-closing door assembly 7 is driven to retract into the cabinet 2, and the door 3 is closed smoothly. At the same time, the grounding component 6 and the locking component 4 are locked.

[0060] like Figure 5 As shown, the locking component 1 includes a locking box 31, and a locking structure is provided inside the locking box 31. The locking structure includes an electromagnetic drive unit 32, through which a slide rod 33 passes. A first spring 34 is sleeved on the slide rod 33. One end of the first spring 34 is fixedly connected to the electromagnetic drive unit 32, and the other end is fixedly connected to the slide rod 33. The electromagnetic drive unit 32 can control the slide rod 33 to retract into the locking box 31 to unlock.

[0061] Based on the above-mentioned manufacturing process of electromagnetic locks, the feature is that it includes the following steps:

[0062] S1: Material preparation, including the procurement and inspection of materials such as iron and copper, as well as electronic components, to ensure that their quality meets production requirements;

[0063] S2: Processing and manufacturing, processing and manufacturing of components such as the upper lock box 31, the lower lock box 8, and the locking structure;

[0064] S3: Parts assembly, which involves assembling the processed parts and the processed or purchased electronic components.

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

[0066] S5: Packaging and shipping. Pack the qualified electromagnetic locks and mark them with information such as production date, model, and batch number, and then ship them out.

[0067] Second embodiment:

[0068] This embodiment provides an electromagnetic lock and its manufacturing process, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] The lock box 31 is also equipped with a control module 35 connected to the electromagnetic drive unit 32. The control module 35 is connected to a communication module 36. The lock box 31 has an unlocking port 37 on one side. The unlocking key 39 can pass through the unlocking port 37 and abut against the communication module 36 to send an unlocking signal. The unlocking key 39 includes a grip plate 40, on which the unlocking module 41 is provided. The grip plate 40 is also equipped with a locking pin 42. The lock box 31 is correspondingly equipped with a locking channel 43 for the locking pin 42 to be inserted. The locking pin 42 is equipped with a locking slot 44. The lock box 31 is also equipped with a key locking device, which can limit the locking pin 42 after the door 3 is opened.

[0070] The unlocking port 37 abuts against the side wall of the door body 3. The side wall of the door body 3 is correspondingly provided with an unlocking passage 38. When unlocking is required, the locking pin 42 and 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 lock box 31 come into contact. The unlocking module 41 sends an unlocking signal, and the electromagnetic drive unit 32 drives the slide bar 33 to retract into the lock box 31. At the same time, the first spring 34 is compressed. After the door body 3 is opened, the locking device shown can limit the unlocking key 39. At this time, it cannot be pulled out, 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 ground has not been restored, which plays a double insurance role 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 lock box 31. A locking block 46 is slidably connected to the slide bar 45. A locking pin 47 that can abut against the locking groove 44 is provided on the top of the locking block 46. A rotating block 48 is rotatably provided at the bottom of the locking block 46. The rotating block 48 is rotatably connected to the fixing pin 49. One end of the rotating block 48 is connected to the protrusion 51 fixed to the side wall of the lock box 31 through the second spring 50. The other end is slidably provided in the sliding groove 52 opened at the bottom of the locking block 46. The rotating block 48 is partially exposed in the lock box 31. When the door is closed, the locking box 8 can push the rotating block 48 back into the lock box 31.

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

[0073] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electromagnetic lock, comprising a locking component with an internal locking structure, the locking component being disposed on a side wall of a cabinet, a door being hinged to the side of the cabinet away from the locking component, and a closing component being disposed on the inner side of the door corresponding to the locking component; when the door is closed, the locking structure within the locking component can extend into the closing component to lock the door; a load-blocking disconnect switch is disposed within the cabinet, characterized in that... It also includes a grounding component, which is installed inside the cabinet and can be engaged with the locking component. The grounding component can only be disengaged from the locking component when it is grounded. The grounding component is connected to an anti-closing door assembly. When the grounding component is grounded, the anti-closing door assembly extends out of the cabinet to prevent the door from closing. When the grounding component is de-grounded, the anti-closing door assembly retracts into the cabinet. The locking component includes a locking box, which is connected to the inside of the door. The top of the locking box is provided with a locking hole for the locking structure to enter, and the bottom is provided with a blocking groove that engages with the grounding component. The grounding component includes a grounding drive rod. One side of the grounding drive rod is rotatably connected to a first support plate inside the cabinet, and the other side is rotatably connected to the side wall of the door and has a rocker arm installed through the door. A grounding knife switch is installed on the grounding drive rod corresponding to the anti-load disconnect switch. The grounding knife switch and the grounding busbar are connected by a grounding wire. The grounding knife switch can connect the grounding busbar and the anti-load disconnect switch to complete the grounding. A locking block is installed on the grounding drive rod perpendicular to the grounding knife switch. In the grounding state, the locking block can be embedded in the resistance groove at the bottom of the locking box to prevent the door from opening outward. The anti-closing door assembly includes a third support plate fixedly connected to the inside of the cabinet. The support plate is provided with a guide rail, and a slider is slidably provided on the guide rail. An anti-closing door rod is fixedly connected to the top of the slider. The top of the anti-closing door rod is provided with teeth, which mesh with a first gear. The first gear and the grounding drive rod are coaxially fixedly connected. The locking component includes a locking box, and a locking structure is provided inside the locking box. The locking structure includes an electromagnetic drive unit, through which a slide rod passes. A first spring is sleeved on the slide rod. One end of the first spring is fixedly connected to the electromagnetic drive unit, and the other end is fixedly connected to the slide rod. The electromagnetic drive unit can control the slide rod to retract into the locking box to unlock.

2. The electromagnetic lock according to claim 1, characterized in that, The load-prevention disconnect switch is fixedly connected to the inner wall of the cabinet. A connecting contact plate is provided on the bottom wall of the load-prevention disconnect switch. The connecting contact plate extends downward to the second support plate. A connecting contact block is connected to the connecting contact plate on the second support plate. A clamping component is provided in front of the connecting contact block. The clamping component can clamp the grounding knife switch that is grounded by contacting the connecting contact block.

3. The electromagnetic lock according to claim 2, characterized in that, The clamping assembly includes two symmetrically arranged clamping blocks. Each clamping block includes a base plate for fixed connection. One side of the base plate forms an upward-facing shoulder, and the top of the shoulder forms a clamping portion with an elastic clamping piece.

4. The electromagnetic lock according to claim 1, characterized in that, The locking box also contains a control module connected to the electromagnetic drive unit. The control module is connected to a communication module. An unlocking port is provided on one side of the locking box. The unlocking key can pass through the unlocking port and abut against the communication module to send an unlocking signal. The unlocking key includes a grip plate with an unlocking module and a locking pin. The locking box is provided with a corresponding locking channel for the locking pin to be inserted. The locking pin has a locking slot. The locking box also contains a key locking device that can limit the locking pin after the door is opened.

5. The electromagnetic lock according to claim 4, characterized in that, The key locking device includes a slide bar fixedly connected to the inner wall of the lock box. A locking block is slidably connected to the slide bar. A locking pin is provided on the top of the locking block to abut against the locking groove. A rotating block is rotatably provided on the bottom of the locking block. The rotating block is rotatably connected to a fixing pin. One end of the rotating block is connected to a protrusion fixed to the side wall of the lock box through a second spring. The other end is slidably provided in a sliding groove opened at the bottom of the locking block. The rotating block is partially exposed in the lock box. When the door is closed, the locking box can push the rotating block back into the lock box.

Images