An electromagnetic locking self-discharging synchronous flip cover mechanism and security robot

Abstract

The application provides an electromagnetic locking self-discharging synchronous flip cover mechanism and a security robot, the electromagnetic locking self-discharging synchronous flip cover mechanism comprises a rack, an upper cover, a driving assembly, a transmission assembly, a flip cover, an electromagnetic locking assembly and a drainage structure; the transmission rod is respectively provided with a driven wheel and a bearing at both ends, the driven wheel receives driving force through a synchronous belt and transmits the driving force to the transmission rod, drives the flip cover to synchronously flip on both sides, avoids the problems of asynchronization and jam caused by shaft center deviation and wear clearance accumulation, the electromagnet and the induction block are adsorbed and matched, active locking force is applied when the flip cover is closed, and the problems of loosening and lifting and adhesion failure caused by vibration are overcome, the openings and the drainage port in the drainage structure form a multistage flow guide channel, the accumulated water and dirt are orderly discharged, the dirt accumulation and electrical element pollution are avoided, and the service life of the whole machine is prolonged.

Description

Technical Field

[0001] This invention relates to the field of robotics, and in particular to an electromagnetic locking self-closing synchronous flip-top mechanism and a security robot. Background Technology

[0002] Existing security patrol robot equipment compartment flip-top systems mostly adopt a single-sided drive motor and a common optical shaft hinge structure, lacking dedicated concentric positioning and wear-resistant constraint design. The drive shaft is simply fitted through a hole in the frame. Under long-term outdoor vibration and frequent opening and closing conditions, shaft misalignment and wear accumulation are prone to occur, leading to asynchronous movement and uneven force on both sides of the flip-top, causing problems such as jamming, abnormal noise, misalignment during closure, and uneven gaps. At the same time, traditional flip-tops rely solely on mechanical limit for passive sealing without an active locking compensation mechanism. Vibration during operation can easily cause loosening and warping, resulting in uneven pressure on the sealing rings and rapid degradation of waterproof and dustproof performance. In addition, the enclosed compartment lacks a drainage structure, allowing mud and dirt to accumulate inside and in the sealing gaps. Manual cleaning is difficult, and residues corrode the seals and contaminate electrical components, severely reducing protective performance and overall machine lifespan, making it difficult to adapt to complex outdoor operating environments with high dust, rain, and mud. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide an electromagnetic locking self-closing synchronous flip-top mechanism and a security robot, which aims to solve the technical problems mentioned in the background art.

[0004] This invention provides an electromagnetic locking self-closing synchronous flip-top mechanism, comprising: frame; The top cover is fixedly mounted on the frame, and the top cover is recessed to form a receiving groove; The drive assembly includes a drive motor and a drive wheel, wherein the drive motor is fixed on the frame and the drive wheel is connected to the output end of the drive motor. The transmission assembly includes a transmission rod, a driven wheel, and a bearing. One end of the transmission rod is provided with the driven wheel, and the other end of the transmission rod is provided with the bearing. The transmission rod is rotatably connected to the frame through the bearing, and the driven wheel is drively connected to the driving wheel. A flip cover, one end of which is fixedly connected to the transmission rod, so that the transmission rod can drive the flip cover to open or close the receiving groove; An electromagnetic locking assembly includes an electromagnet fixed to the upper cover and an electromagnet sensing block fixed to the flip cover, wherein the electromagnet sensing block is attracted and engaged with the electromagnet. The system also includes a drainage structure located around the periphery of the receiving tank and extending to the bottom of the frame, the drainage structure being used to drain accumulated water around the receiving tank to the outside of the frame.

[0005] The beneficial effects of this invention are: The single-sided drive structure, with a driven wheel at one end and a bearing at the other, utilizes a rotating connection between the bearing and the frame. The driven wheel receives the driving force from one side via a synchronous belt and transmits it to the drive rod, causing the flip cover to rotate synchronously on both sides. This avoids the problems of asynchronous movement and uneven force distribution caused by shaft misalignment and accumulated wear in traditional single-sided drive structures with ordinary optical shaft hinges. It effectively eliminates opening and closing jamming, abnormal noise, and alignment deviations. Through the attraction between an electromagnet and an electromagnet induction block, an active locking force is applied when the flip cover closes, ensuring a tight fit between the flip cover and the top cover. This overcomes the problems of flip cover loosening and failure to fit caused by vehicle vibration and posture shift in traditional mechanical limit passive fitting methods. It also ensures that the sealing ring is evenly pressurized, maintaining its waterproof and dustproof performance over a long period. The drainage structure is formed by the first opening, the second opening, the receiving cavity, and the drain outlet. The first opening is connected to the outside of the top cover, the second opening is connected to the receiving tank and the receiving cavity, and the drain outlet is connected to the outside of the frame, forming a multi-stage drainage channel. This orderly discharges the accumulated water and dirt around the receiving tank, avoiding problems such as dirt accumulation inside the traditional closed cavity, difficulty in manual cleaning, corrosion of the sealing ring, and contamination of electrical components. It is suitable for complex outdoor operating scenarios with dust, rain, and mud, and extends the service life of the whole machine.

[0006] Furthermore, the drive assembly also includes a reducer and a fixed frame. The output end of the drive motor is connected to the reducer in a transmission manner. The end of the reducer facing away from the drive motor is connected to the drive wheel in a transmission manner. The reducer is connected to the frame through the fixed frame.

[0007] Furthermore, the transmission assembly also includes two connecting rods, the bearing is sleeved on the end of the transmission rod facing away from the driven wheel, and the bearing is interference-fitted with the transmission rod. The bearing is connected to the frame through a bearing seat, and the driven wheel is connected to the driving wheel through a synchronous belt. The two connecting rods are spaced apart on the transmission rod, and the ends of the two connecting rods facing away from the transmission rod are connected to the flip cover.

[0008] Furthermore, the transmission rod is fitted into the brass bushing with a clearance fit. The end of the transmission rod facing the driven wheel is provided with a shaft positioning step, and the end of the driven wheel facing the transmission rod is provided with a boss. The shaft positioning step is located between the brass bushing and the boss.

[0009] Furthermore, the bottom periphery of the flip cover is provided with a first waterproof groove, and a waterproof pad is provided in the first waterproof groove. The end of the flip cover away from the connecting bent rod is provided with the electromagnet induction block. The top of the flip cover is provided with an arc-shaped part, and the arc-shaped part gradually bulges upward from the end near the transmission rod to the end away from the transmission rod.

[0010] Furthermore, the receiving groove is provided with a first support plate, which abuts against the flip cover. The periphery of the first support plate is provided with a first waterproof protrusion, which is adapted to the first waterproof groove. The inner wall of the receiving groove and the first waterproof protrusion form a first waterproof groove. Both the first waterproof protrusion and the first waterproof groove are provided with waterproof pads. The first support plate is provided with the electromagnet, which is located at the end of the first waterproof protrusion facing away from the connecting bent rod. The upper cover is also provided with two first openings, which communicate with the first waterproof groove. The two first openings are located at the end of the upper cover facing away from the electromagnet. The first support plate is provided with a second opening, through which the receiving groove communicates with the receiving cavity. The receiving cavity is located at the end of the first support plate facing away from the receiving groove. The drainage structure includes the first opening, the second opening, and a drain outlet. The first opening communicates with the outside of the upper cover. The second opening communicates with the receiving groove and the receiving cavity. The drain outlet is located at the bottom of the receiving cavity and communicates with the outside of the frame.

[0011] Furthermore, the bottom periphery of the first support plate is provided with a second waterproof protrusion, the second waterproof protrusion is provided with a waterproof pad, the periphery of the second opening is provided with a waterproof folded edge, the waterproof folded edge bends and extends from the first support plate toward the receiving cavity, the second waterproof protrusion and the waterproof folded edge form a gap, and both the second waterproof protrusion and the waterproof folded edge are adapted to the receiving cavity.

[0012] Furthermore, a second support plate is provided on the top periphery of the receiving cavity, the first support plate abuts against the second support plate, the periphery of the second support plate is recessed to form a second waterproof groove, a waterproof pad is provided in the second waterproof groove, the second waterproof groove is adapted to the second waterproof protrusion, and the waterproof folded edge extends into the receiving cavity.

[0013] Furthermore, the ends of both the first support plate and the second support plate furthest from the transmission rod are higher than the ends adjacent to the transmission rod.

[0014] The present invention also provides a security robot, including the electromagnetic locking self-closing synchronous flip-cover mechanism as described above. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the electromagnetic locking self-closing synchronous flip-cover mechanism of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the electromagnetic locking self-closing synchronous flip-cover mechanism of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the driving component in this invention; Figure 4 This is a schematic diagram of the structure of the flip cover and transmission assembly in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the structure of the upper cover and the first support plate in this invention; Figure 7 This is a schematic diagram of the structure of the receiving cavity and the second support plate in this invention; In the diagram: 1. Top cover; 11. Receiving slot; 2. Drive assembly; 21. Drive motor; 22. Drive wheel; 23. Reducer; 24. Fixing frame; 3. Transmission assembly; 31. Transmission rod; 311. Shaft positioning step; 32. Driven wheel; 321. Boss; 33. Bearing; 34. Connecting bent rod; 35. Brass bushing; 36. Bearing seat; 4. Flip cover; 41. First waterproof groove; 42. Arc-shaped part; 5. Electromagnetic locking assembly; 51. Electromagnet; 52. Electromagnet induction block; 6. Drainage structure; 61. First opening; 62. Second opening; 63. Drain outlet; 7. First support plate; 71. First waterproof flange; 72. First waterproof groove; 73. Waterproof fold; 74. Second waterproof flange; 75. First clearance part; 8. Receiving cavity; 81. Second support plate; 811. Second waterproof groove; 812. Second clearance part; 82. Third clearance part; 9. Frame.

[0016] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0017] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] See Figures 1 to 7 The present invention provides an electromagnetic locking self-draining synchronous flip cover mechanism, comprising: a frame 9, an upper cover 1, a drive assembly 2, a transmission assembly 3, a flip cover 4, an electromagnetic locking assembly 5, and a drainage structure 6.

[0021] The frame 9 is used to support and fix the various functional components, and is installed on the main frame of the security patrol robot.

[0022] The upper cover 1 is fixedly mounted on the frame 9, and the upper cover 1 has a recessed receiving groove 11. A first support plate 7 is provided in the receiving groove 11. When the flip cover 4 is closed, the first support plate 7 abuts against the flip cover 4 to provide a sealing bearing surface when the flip cover 4 is closed. A first waterproof protrusion 71 is provided around the periphery of the first support plate 7. A first waterproof groove 72 is formed between the inner wall of the receiving groove 11 and the first waterproof protrusion 71. Waterproof pads (preferably silicone waterproof pads in this embodiment) are provided at the top of the first waterproof protrusion 71 and the bottom of the first waterproof groove 72 to form the first sealing line. An electromagnet 51 is provided on the first support plate 7. The electromagnet 51 is located at the end of the first waterproof protrusion 71 facing away from the connecting bent rod 34. The upper cover 1 is also provided with two first openings 61. The two first openings 61 communicate with the first waterproof groove 72. The two first openings 61 are located at the end of the upper cover 1 facing away from the electromagnet 51 and communicate with the outside of the upper cover 1. The first opening 61 gradually slopes downward from front to back, and the bottom wall of the first opening 61 is lower than the bottom wall of the first waterproof groove 72, so that the water accumulated in the first waterproof groove 72 flows naturally into the first opening 61 under the action of gravity and is discharged to the outside of the upper cover 1.

[0023] The bottom periphery of the first support plate 7 is provided with a second waterproof protrusion 12, and a waterproof pad is provided on the second waterproof protrusion 12 to form a second sealing barrier. The first support plate 7 has a second opening 62, and the periphery of the second opening 62 is provided with a waterproof folded edge 73, which bends and extends from the first support plate 7 toward the receiving cavity 8. A gap is formed between the second waterproof protrusion 12 and the waterproof folded edge 73. Both the second waterproof protrusion 12 and the waterproof folded edge 73 are adapted to the receiving cavity 8 to guide any water that may seep in downwards into the receiving cavity 8.

[0024] The drainage structure 6 is used to drain the accumulated water around the receiving tank 11 to the outside of the frame 9. The drainage structure 6 includes a first opening 61, a second opening 62, and a drain outlet 63. The first opening 61 communicates with the outside of the upper cover 1, forming a first drainage path for draining the accumulated water in the first waterproof tank 72. The receiving tank 11 communicates with the receiving cavity 8 through the second opening 62. In the rinsing state, external water can enter the receiving cavity 8 through the second opening 62 and be discharged through the drain outlet 63. The receiving cavity 8 is located at the end of the first support plate 7 facing away from the receiving tank 11, and the drain outlet 63 is located at the bottom of the receiving cavity 8 and communicates with the outside of the frame 9. Through the above structure, a dual-path drainage system is formed: "first waterproof tank 72 → first opening 61 → outside of upper cover 1" and "receiving tank 11 → second opening 62 → receiving cavity 8 → drain outlet 63 → outside of frame 9". In normal use, a small amount of condensate or seepage water is collected in the first waterproof tank 72 and discharged through the first opening 61. When cleaning the equipment compartment, the external rinsing water can enter the receiving cavity 8 through the second opening 62 and be discharged to the outside of the frame 9 through the drain outlet 63, realizing rapid drainage and internal self-cleaning. Daily drainage and periodic flushing maintenance can be completed without disassembling the machine.

[0025] The drive assembly 2 includes a drive motor 21, a drive wheel 22, a reducer 23, and a mounting frame 24. The drive motor 21 is preferably a stepper motor. The output end of the drive motor 21 is connected to the reducer 23, and the end of the reducer 23 facing away from the drive motor 21 is connected to the drive wheel 22. The reducer 23 is connected to the frame 9 via the mounting frame 24. Preferably, the reducer 23 has a reduction ratio of 1:20, which effectively reduces the opening and closing speed of the flip cover, enabling the flip cover 4 to open and close smoothly and at multiple angles. When the opening angle of the flip cover 4 is greater than 50°, the reducer's self-locking damping can resist gravity and external force, preventing the flip cover 4 from slipping, loosening, or shifting.

[0026] The transmission assembly 3 includes a transmission rod 31, a driven wheel 32, a bearing 33, a bearing housing 36, a brass bushing 35, and two connecting bent rods 34. The driven wheel 32 is fixedly connected to one end of the transmission rod 31. The end of the transmission rod 31 facing away from the driven wheel 32 is fitted with the bearing 33, which is interference-fitted with the transmission rod 31. The bearing 33 is installed in the bearing housing 36, which is fixedly connected to the frame 9. The transmission rod 31 passes through the brass bushing 35 with a clearance fit. In this embodiment, the bearing housing 36 is preferably a P5 precision bearing housing 36. The two connecting bent rods 34 are fixedly connected to the transmission rod 31 and rotate synchronously with it. The ends of the two connecting bent rods 34 facing away from the transmission rod 31 are respectively fixedly connected to the two sides of the flip cover 4, so that the transmission rod 31 drives the flip cover 4 to flip through the connecting bent rods 34. The driven wheel 32 is connected to the driving wheel 22 through a synchronous belt to achieve backlash-free synchronous transmission. Preferably, the driven wheel 32 and the driving wheel 22 are synchronous wheels with equal diameters of 1:1, which, together with the synchronous belt, achieve backlash-free synchronous transmission. This ensures that the movement phase and stroke of the connecting rods 34 on both sides are completely consistent from the power source, so as to achieve smooth and symmetrical opening and closing of the flip cover 4.

[0027] The drive rod 31 has a shaft positioning step 311 at the end facing the driven wheel 32, and a boss 321 at the end facing the drive rod 31. The shaft positioning step 311 is located between the brass bushing 35 and the boss 321. Through this structure, the brass bushing 35 achieves radial limiting and axial correction of the drive rod 31, effectively eliminating radial offset, axial play, and eccentric wear problems caused by long-term rotation of the drive rod 31, ensuring the rotational concentricity, motion accuracy, and long-term operational stability of the entire transmission system. The shaft positioning step 311 achieves precise axial limiting, preventing axial movement of the drive rod 31. The P5 precision bearing housing has high precision and high rigidity characteristics, which, combined with the self-lubricating and high wear-resistant properties of the brass bushing 35, further ensures the rotational accuracy and long-term operational stability of the transmission system.

[0028] The outer surface of the connecting bend 34 is provided with reinforcing ribs to improve the overall structural strength of the connecting bend 34 and prevent deformation under long-term stress.

[0029] The bottom periphery of the flip cover 4 is provided with a first waterproof groove 41, and a waterproof gasket is provided in the first waterproof groove 41. When the flip cover 4 is closed, the first waterproof protrusion 71 is embedded in the first waterproof groove 41 and presses the waterproof gasket to form a seal. An electromagnet induction block 52 is provided at the end of the flip cover 4 away from the connecting bent rod 34. When the flip cover 4 closes the receiving groove 11, the electromagnet induction block 52 is facing the electromagnet 51. After the electromagnet 51 is energized, it attracts the electromagnet induction block 52. The top of the flip cover 4 is provided with an arc-shaped part 42. The arc-shaped part 42 gradually bulges upward from the end near the transmission rod 31 to the end away from the transmission rod 31, so that the top of the flip cover 4 forms a guide slope that gradually decreases from front to back (i.e., the end away from the transmission rod is higher than the end adjacent to the transmission rod), preventing water from accumulating on the top of the flip cover 4.

[0030] A second support plate 81 is provided on the top periphery of the receiving cavity 8. The bottom surface of the first support plate 7 abuts against the top surface of the second support plate 81. The periphery of the second support plate 81 is recessed to form a second waterproof groove 811. A waterproof gasket is provided in the second waterproof groove 811. The second waterproof groove 811 is adapted to the second waterproof protrusion 12 to form a third sealing line. A waterproof folded edge 73 extends into the receiving cavity 8 to guide any water that may seep in downwards into the receiving cavity 8. The length of the second support plate 81 is greater than the length of the first support plate 7, forming a complete support.

[0031] Preferably, the ends of the first support plate 7 and the second support plate 81 that are away from the transmission rod 31 are both higher than the ends of the adjacent transmission rod 31 (with the end of the adjacent transmission rod 31 as the rear and the end away from the transmission rod 31 as the front), that is, they gradually tilt upward from back to front, so that the water or condensate on the first support plate 7 gathers towards the rear end (the end adjacent to the transmission rod 31) under the action of gravity, flows into the first waterproof groove 72 and then flows out through the first opening 61 to the outside of the upper cover 1.

[0032] The first support plate 7 is provided with a first clearance part 75, the second support plate 81 is provided with a second clearance part 812, and the receiving cavity 8 is provided with a third clearance part 82. The first clearance part 75, the second clearance part 812 and the third clearance part 82 are positioned correspondingly in the vertical direction to avoid the connecting bent rod 34, so as to prevent the connecting bent rod 34 from interfering with each component during the flipping process and to ensure that the opening and closing movement of the flip cover 4 is smooth and unobstructed.

[0033] The working principle is as follows: Transmission process: The drive motor 21 (stepper motor) and reducer 23 output power, which is transmitted to the driven wheel 32 via the driving wheel 22 and synchronous belt. The driven wheel 32 drives the transmission rod 31 to rotate synchronously. The two connecting bent rods 34 are fixedly connected to the transmission rod 31 and swing synchronously with the transmission rod 31, thereby synchronously pushing and pulling the flip cover 4 to complete the opening and closing action. Relying on the structure of the connecting bent rods 34 on both sides, the shaft positioning step 311, and the concentric structure of the bearing seat 36 and the brass bushing 35 (in this embodiment, the bearing seat 36 is preferably a P5 precision bearing seat), it is ensured that the opening and closing angle of the flip cover 4 is consistent, the action is symmetrical, there is no deviation, and there is no shaking. When the opening angle of the flip cover 4 is greater than 50°, the reducer 23 relies on self-locking damping to resist the downward fall of the flip cover 4 due to gravity and external force, preventing the flip cover 4 from slipping or loosening and shifting, and realizing the stable hovering and positioning of the flip cover 4 in the open state.

[0034] Electromagnetic locking process: After the flip cover 4 is fully closed, the electromagnet 51 is energized and attracts the electromagnet induction block 52, outputting a constant magnetic pre-tightening force, which actively pulls the flip cover 4 to evenly press the sealing and waterproof gasket, adaptively compensating for the small fitting gaps caused by vehicle body bumps and vibrations and mechanical wear, eliminating the loosening and leakage risks of traditional pure mechanical limit fitting, and achieving long-term sealing and locking.

[0035] Drainage and self-cleaning process: In normal use, the water accumulated on the top of the flip cover 4 is guided by the arc-shaped part 42 and then drained away along the surface of the flip cover 4. A small amount of condensate or seepage at the sealing interface enters the first waterproof groove 72. As the first support plate 7 gradually tilts upward from back to front, the water accumulates towards the rear end (the end adjacent to the transmission rod 31) under the action of gravity and is discharged from the first opening 61. When cleaning the equipment compartment, the external flushing water can enter the receiving cavity 8 through the second opening 62 and be discharged to the outside of the frame 9 through the drain outlet 63, realizing rapid drainage and internal self-cleaning. Daily drainage and periodic flushing maintenance can be completed without disassembling the machine.

[0036] The present invention also provides a security robot, including the electromagnetic locking self-closing synchronous flip-cover mechanism as described above.

[0037] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An electromagnetic locking self-closing synchronous flip-cover mechanism, characterized in that, include: frame; The top cover is fixedly mounted on the frame, and the top cover is recessed to form a receiving groove; The drive assembly includes a drive motor and a drive wheel, wherein the drive motor is fixed on the frame and the drive wheel is connected to the output end of the drive motor. The transmission assembly includes a transmission rod, a driven wheel, and a bearing. One end of the transmission rod is provided with the driven wheel, and the other end of the transmission rod is provided with the bearing. The transmission rod is rotatably connected to the frame through the bearing, and the driven wheel is drively connected to the driving wheel. A flip cover, one end of which is fixedly connected to the transmission rod, so that the transmission rod can drive the flip cover to open or close the receiving groove; An electromagnetic locking assembly includes an electromagnet fixed to the upper cover and an electromagnet sensing block fixed to the flip cover, wherein the electromagnet sensing block is attracted and engaged with the electromagnet. The system also includes a drainage structure located around the periphery of the receiving tank and extending to the bottom of the frame, the drainage structure being used to drain accumulated water around the receiving tank to the outside of the frame.

2. The electromagnetic locking self-closing synchronous flip-cover mechanism according to claim 1, characterized in that, The drive assembly also includes a reducer and a fixed frame. The output end of the drive motor is connected to the reducer, and the end of the reducer facing away from the drive motor is connected to the drive wheel. The reducer is connected to the frame through the fixed frame.

3. The electromagnetic locking self-closing synchronous flip-cover mechanism according to claim 2, characterized in that, The transmission assembly further includes two connecting rods. The bearing is sleeved on the end of the transmission rod facing away from the driven wheel, and the bearing is interference-fitted with the transmission rod. The bearing is connected to the frame through a bearing seat. The driven wheel is connected to the driving wheel through a synchronous belt. The two connecting rods are spaced apart on the transmission rod, and the ends of the two connecting rods facing away from the transmission rod are connected to the flip cover.

4. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 3, characterized in that, The transmission rod is fitted into the brass bushing with a clearance fit. The end of the transmission rod facing the driven wheel is provided with a shaft positioning step, and the end of the driven wheel facing the transmission rod is provided with a boss. The shaft positioning step is located between the brass bushing and the boss.

5. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 3, characterized in that, The bottom periphery of the flip cover is provided with a first waterproof groove, and a waterproof pad is provided in the first waterproof groove. The end of the flip cover away from the connecting bent rod is provided with the electromagnet induction block. The top of the flip cover is provided with an arc-shaped part, and the arc-shaped part gradually bulges upward from the end near the transmission rod to the end away from the transmission rod.

6. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 5, characterized in that, The receiving groove is provided with a first support plate, which abuts against the flip cover. The periphery of the first support plate is provided with a first waterproof protrusion, which is adapted to the first waterproof groove. The inner wall of the receiving groove and the first waterproof protrusion form a first waterproof groove. Both the first waterproof protrusion and the first waterproof groove are provided with waterproof pads. The first support plate is provided with an electromagnet, which is located at the end of the first waterproof protrusion facing away from the connecting bent rod. The upper cover is also provided with two first openings, which are connected to the first waterproof groove. The two first openings are located at the end of the upper cover facing away from the electromagnet. The first support plate is provided with a second opening, through which the receiving groove is connected to the receiving cavity. The receiving cavity is located at the end of the first support plate facing away from the receiving groove. The drainage structure includes the first opening, the second opening, and a drain outlet. The first opening is connected to the outside of the upper cover. The second opening connects the receiving groove and the receiving cavity. The drain outlet is located at the bottom of the receiving cavity and is connected to the outside of the frame.

7. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 6, characterized in that, The bottom periphery of the first support plate is provided with a second waterproof protrusion, and a waterproof pad is provided on the second waterproof protrusion. The periphery of the second opening is provided with a waterproof folded edge. The waterproof folded edge bends and extends from the first support plate toward the receiving cavity. The second waterproof protrusion and the waterproof folded edge form a gap. Both the second waterproof protrusion and the waterproof folded edge are adapted to the receiving cavity.

8. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 7, characterized in that, The top periphery of the receiving cavity is provided with a second support plate, the first support plate abuts against the second support plate, the periphery of the second support plate is recessed to form a second waterproof groove, a waterproof pad is provided in the second waterproof groove, the second waterproof groove is adapted to the second waterproof protrusion, and the waterproof folded edge extends into the receiving cavity.

9. The electromagnetic locking self-discharging synchronous flip-cover mechanism according to claim 8, characterized in that, The ends of the first support plate and the second support plate furthest from the transmission rod are both higher than the ends adjacent to the transmission rod.

10. A security robot, comprising an electromagnetic locking self-closing synchronous flip-cover mechanism as described in any one of claims 1 to 9.

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