Transformer with electric leakage alarm function

Abstract

The invention relates to the technical field of transformers, and discloses a transformer with an electric leakage alarm function, which comprises a shell, a trigger box is fixedly mounted at the top of the shell, and a power restoration assembly capable of restoring power supply and ensuring power restoration interval time after electric leakage tripping is arranged in the trigger box. By arranging the power restoration assembly, when the leakage protector triggers tripping and an alarm lamp at the top of a trigger box gives an alarm, a push block is matched with a clamping plate arranged at the top of the push block to drive a copper rod to be slowly in butt joint with a power-on connector, and due to transmission delay between a threaded rod and a threaded sliding plate as well as between a threaded rod and a connecting spring, the power-on connector can be quickly connected; according to the utility model, the electric leakage protector can realize power restoration after a period of time after a tripping phenomenon occurs, enough time is provided for a circuit user to get rid of danger and timely response, and the copper rod can be kept in a relatively stable state after being butted with an electrified connector through elastic pressing of a subsequent connecting spring, so that subsequent safe power supply of the circuit is ensured.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a transformer with a leakage current alarm function. Background Technology

[0002] Most transformers are now installed outdoors and are exposed to wind and rain for a long time. Over time, the connection points of the transformer's interface terminals will age, which may lead to leakage. Most transformers now use leakage current protectors to protect them from leakage and trigger leakage alarms.

[0003] According to a public notice regarding a transformer with leakage current protection (Notice No.: CN113178307B), the aforementioned application includes a switching mechanism and a toggle mechanism for energizing the transformer. Simultaneously, a rubber plate presses a button, triggering an alarm and transmitting a signal to the maintenance system. This informs maintenance personnel to perform timely repairs, effectively preventing the leakage current protection device from tripping and simultaneously stopping operation at the port, thus avoiding disruption to nearby residents' electricity use, reducing usability and applicability, and affecting the normal operation of the transformer.

[0004] However, in actual use, the toggle switch of the aforementioned device will directly trigger the power transmission structure after tripping. Although it can ensure the power supply needs of the entire circuit, when leakage occurs, it is usually due to grounding at the equipment or connection in the circuit. The direct and rapid power supply makes the subsequent power consumption of the circuit still have safety hazards and cannot give users enough reaction time to protect the electrical equipment. In view of this, we propose a transformer with leakage alarm function. Summary of the Invention

[0005] The purpose of this invention is to provide a transformer with a leakage current alarm function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a transformer with leakage current alarm function, comprising a housing, a trigger box fixedly installed on the top of the housing, an alarm light provided on the top of the trigger box, a leakage current protector fixedly installed on the inner wall of the trigger box, a toggle block movably connected to the side wall of the leakage current protector, a U-shaped limit seat fixedly installed on the bottom inner wall of the trigger box, a power restoration component provided inside the trigger box to restore power supply after leakage current tripping and ensure power restoration interval time, a push block slidably installed on the bottom inner wall of the trigger box, a copper rod fixedly installed on the top of the push block by a clamp, a backstop component provided on the bottom inner wall of the trigger box to prevent the push block from retracting after temporary power supply, thereby causing power supply instability, and a lock head component provided at the end of the copper rod to achieve stable circuit connection.

[0007] Preferably, the re-energizing assembly includes a hinge rod, the top end of which is hinged to the end side wall of the lever, and the bottom end of which is hinged to a toothed rod. The toothed rod is slidably mounted on the bottom inner wall of the trigger box. A transmission gear is rotatably mounted on the inner wall of the trigger box, and a driving bevel gear is coaxially fixedly mounted on the transmission gear. A mounting plate is fixedly mounted on the bottom inner wall of the trigger box, and a threaded rod is rotatably mounted on the side wall of the mounting plate. A driven bevel gear is threaded through and fixedly mounted on the threaded rod. A threaded sliding plate is threadedly connected to the outer wall of the threaded rod, and a connecting spring is fixedly connected to the side wall of the threaded sliding plate.

[0008] Preferably, the lever is L-shaped and is movably connected to the side wall of the residual current device (RCD) via a hinge seat. The U-shaped limiting seat has an arc-shaped limiting groove on the outer wall near the RCD that matches the end of the lever. In the initial state of the RCD, one end of the lever is inside the arc-shaped limiting groove, and the bottom of the arc-shaped limiting groove is smooth to facilitate the downward swing of the lever.

[0009] Preferably, there are two sets of clamping plates, and both sets of clamping plates are set on the top outer wall of the push block. The clamping plates are made of insulating material, and when the push block moves horizontally, they work together to drive the copper rod to move synchronously.

[0010] Preferably, the anti-reverse component includes limiting teeth, a rectangular groove is formed on the bottom inner wall of the push block, the limiting teeth are formed on the top inner wall of the rectangular groove, a fixed seat is fixedly installed on the bottom inner wall of the trigger box, a push plate is slidably installed on the inner wall of the fixed seat, a guide plate is provided on the lower surface of the push plate, a return spring is fixedly connected between the guide plate and the inner wall of the fixed seat, a rotating rod is rotatably installed on the inner wall of the fixed seat, the rotating rod passes through and is fixedly installed with the anti-reverse plate, a spiral spring is sleeved on the arc-shaped outer wall of the rotating rod, an arc-shaped groove is formed on the inner wall of the push plate, a through groove is formed on the inner wall of the anti-reverse plate, and a guide rod is fixedly installed on the inner wall of the through groove.

[0011] Preferably, the cross-section of the limiting tooth is arranged in a right-angled triangle, and the inclined surface of the limiting tooth faces the side of the leakage current protector. The width of the fixing seat is adapted to the width of the rectangular groove, thereby guiding and restricting the movement of the pushing block. A circular groove with a diameter larger than the outer diameter of the spiral spring is opened on the inner wall of the fixing seat, and the two ends of the spiral spring are fixedly connected to the arc-shaped outer wall of the rotating rod and the bottom inner wall of the circular groove, respectively. This ensures that the rotating rod always experiences the reverse rotation of the spiral spring and achieves the tendency to reset when it rotates with the anti-reverse plate.

[0012] Preferably, the height of the through groove is greater than that of the push plate, and the guide rod is disposed inside the arc-shaped groove, so that the anti-reverse plate can rotate around the rotating rod as the rotation center without being interfered with by the movement of the push plate.

[0013] Preferably, the lock assembly includes a transmission rod, the end of which is hinged to the side wall of the U-shaped limiting seat. A U-shaped component is hinged to the end of the transmission rod away from the U-shaped limiting seat. A base plate is fixedly installed on the inner wall of the trigger box. An arc-shaped copper sheet is slidably installed on the upper surface of the base plate. The U-shaped component is slidably connected to the outer wall of the arc-shaped copper sheet. A circular plate is fixedly installed through and on the end of the copper rod. A notch is formed on the inner wall of the circular plate, the height of which is adapted to the thickness of the transmission rod. A cylinder is fixedly installed on the inner wall of the notch. A guide groove is formed on the inner wall of the transmission rod.

[0014] Preferably, the trigger box is internally equipped with a docking assembly to ensure the locking effect of the copper rod end when energized. The docking assembly includes a transmission plate, which is fixedly installed on the outer wall of the copper rod. A connecting rod is fixedly installed on the side wall of the transmission plate. A guide ball is fixedly installed on the lower surface of the end of the connecting rod away from the transmission plate. An installation rod is fixedly installed on the inner wall of the trigger box. A docking cylinder is rotatably installed on the side wall of the installation rod. A spiral groove is formed on the arc-shaped outer wall of the docking cylinder. The guide ball is disposed inside the spiral groove. A rubber strip is provided on the inner surface of the docking cylinder.

[0015] Preferably, the docking cylinder includes a cylinder body made of insulating material and a copper ring disposed inside the cylinder body. The copper ring is adapted to the outer surface of the copper rod, so that when the copper rod is inserted into the docking cylinder, it can fit snugly against the copper ring to achieve circuit conduction. The arc-shaped inner surface of the docking cylinder has a receiving opening adapted to the rubber strip, and the rubber strip is hollow inside so that it can contract and deform when compressed. The rubber strip is arranged in a large-pitch spiral along the arc-shaped inner surface of the docking cylinder.

[0016] Compared with the prior art, the present invention provides a transformer with leakage current alarm function, which has the following beneficial effects: 1. This transformer with leakage current alarm function is equipped with a power restoration component. When the leakage current protector trips and the alarm light on the top of the trigger box sounds, the push block rotates clockwise. In conjunction with the transmission component, the push block, along with the clamp on its top, slowly connects the copper rod to the energized connector. Due to the time delay in the transmission between the threaded rod, the threaded sliding plate, and the connecting spring, power is restored some time after the leakage current protector trips, giving the circuit user sufficient time to escape danger and react promptly. Furthermore, the elasticity of the connecting spring ensures that the copper rod remains relatively stable after connecting to the energized connector, thereby ensuring the safe power supply to the circuit and preventing damage to electrical equipment due to power outages.

[0017] 2. This transformer with leakage alarm function is equipped with a backstop component. When the push block moves to the right in the horizontal direction along the inner wall of the trigger box, the limiting teeth push the backstop plate along with the movement of the push block. Due to the setting of the arc groove and the guide rod, the backstop plate will not interfere with the movement of the push block. After the limiting teeth pass the backstop plate, due to the setting of the spiral spring, the rotating rod drives the backstop plate to reset, so that when the push block tends to move to the left in the horizontal direction, it interferes with and blocks it, ensuring the stability of the circuit connection after the copper rod is connected, thereby ensuring electrical safety.

[0018] 3. This transformer with leakage current alarm function, through the setting of a locking head assembly, when the copper rods are connected, due to the sliding connection between the U-shaped part and the arc-shaped copper sheet, a lever effect is formed between the transmission rod and the cylinder. As the copper rod moves closer to the center of the arc-shaped copper sheet, under the constraint of the cylinder and the guide groove, the two sets of arc-shaped copper sheets on the base plate move closer to each other and finally clamp on the outer side of the end of the copper rod, realizing the connection of the circuit and the re-power supply after the leakage current protection device is disconnected. Moreover, the wrapping effect of the two sets of arc-shaped copper sheets makes the circuit connection more stable and avoids the occurrence of unstable power supply.

[0019] 4. This transformer with leakage alarm function is equipped with a docking assembly. When the copper rods are docked, the movement of the transmission plate causes the connecting rod to push the guide ball. With the guidance of the spiral chute, the docking cylinder rotates continuously as the copper rod is inserted, reducing the obstruction of the rubber strip to the copper rod. After the docking is fully completed, the rubber strip adheres to the surface of the copper rod to provide considerable resistance, ensuring the stability of the connection between the copper rod and the docking cylinder, thereby ensuring the stable power supply of the electrical circuit and ensuring electrical safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the trigger box structure of the present invention; Figure 3 This is a partially enlarged structural diagram of the current recovery component of the present invention; Figure 4 This is a schematic diagram of the leakage current protector and U-shaped limiting seat structure of the present invention; Figure 5 This is a schematic cross-sectional view of the push block structure of the present invention; Figure 6 This is a schematic diagram of the anti-reverse component structure of the present invention; Figure 7 This is a schematic diagram of the lock head assembly structure of the present invention; Figure 8 This is a partial three-dimensional structural diagram of the lock head assembly of the present invention; Figure 9 This is a schematic diagram of the docking component structure in Embodiment 2 of the present invention; Figure 10 This is a schematic cross-sectional view of the docking cylinder in Embodiment 2 of the present invention.

[0021] In the diagram: 1. Housing; 2. Trigger box; 3. Residual current device (RCD); 4. Toggle block; 5. U-shaped limit seat; 6. Re-energizing assembly; 61. Hinge rod; 62. Gear rack; 63. Transmission gear; 64. Driving bevel gear; 65. Threaded rod; 66. Driven bevel gear; 67. Threaded sliding plate; 68. Connecting spring; 69. Push block; 610. Copper rod; 7. Anti-reverse assembly; 71. Limiting tooth; 72. Fixing seat; 73. Push plate; 74. Re-energizing assembly. 75. Position spring; 76. Rotating rod; 77. Anti-reverse plate; 78. Spiral spring; 79. Arc groove; 80. Guide rod; 81. Lock head assembly; 82. Transmission rod; 83. U-shaped part; 84. Arc copper sheet; 85. Base plate; 86. Round plate; 87. Cylindrical part; 98. Guide groove; 99. Connecting assembly; 90. Transmission plate; 91. Connecting rod; 92. Guide ball; 93. Mounting rod; 94. Connecting cylinder; 95. Spiral chute; 96. Rubber strip. Detailed Implementation Example 1

[0022] like Figures 1-8 As shown, the present invention provides a technical solution: a transformer with leakage current alarm function, including a housing 1, a trigger box 2 fixedly installed on the top of the housing 1, a leakage current protector 3 fixedly installed on the inner wall of the trigger box 2, a toggle block 4 movably connected to the side wall of the leakage current protector 3, a U-shaped limit seat 5 fixedly installed on the bottom inner wall of the trigger box 2, and a power restoration component 6 provided inside the trigger box 2 to restore power supply after leakage current trip and ensure the power restoration interval time. The power restoration component 6 includes a hinge rod 61, a gear rod 62, a transmission gear 63, a driving bevel gear 64, a threaded rod 65, a driven bevel gear 66, a threaded sliding plate 67, a connecting spring 68, a push block 69, and a copper rod 610.

[0023] In one embodiment of the present invention, the top end of the hinge rod 61 is hinged to the end side wall of the lever 4, and the bottom end of the hinge rod 61 is hinged to a toothed rod 62. The toothed rod 62 is slidably mounted on the bottom inner wall of the trigger box 2. A transmission gear 63 is rotatably mounted on the inner wall of the trigger box 2. A drive bevel gear 64 is coaxially fixedly mounted on the transmission gear 63. A mounting plate is fixedly mounted on the bottom inner wall of the trigger box 2. A threaded rod 65 is rotatably mounted on the side wall of the mounting plate. A driven bevel gear 66 is fixedly mounted through the threaded rod 65. A threaded slide plate 67 is threadedly connected to the outer wall of the threaded rod 65. A connecting spring 68 is fixedly connected to the side wall of the threaded slide plate 67. A push block 69 is slidably mounted on the bottom inner wall of the trigger box 2. A copper rod 610 is fixedly mounted on the top of the push block 69.

[0024] Furthermore, an alarm light is installed on the top of the trigger box 2, and the alarm light is connected to the residual current device (RCD) 3. The alarm light activates after the RCD 3 is de-energized to alert the user. Simultaneously, the toggle block 4 is L-shaped and is movably connected to the side wall of the RCD 3 via a hinged seat. When the RCD 3 is triggered, the toggle block 4 rotates counter-clockwise, indicating that the RCD 3 has tripped. Additionally, the U-shaped limit seat 5 has an arc-shaped limiting groove on its outer wall near the RCD 3, which matches the end of the toggle block 4. In the initial state of the RCD 3, one end of the toggle block 4 is inside this arc-shaped limiting groove, and the bottom of this arc-shaped limiting groove... The mechanism is designed to be smooth, facilitating the downward swing of the lever 4. Specifically, the hinge point between the hinge rod 61 and the lever 4 is located at the end of the lever 4 furthest from the residual current device 3. When the residual current device 3 trips, the rotation of the lever 4 causes the top of the hinge rod 61 to rotate, thereby generating a rightward pulling force on the gear 62 in the horizontal direction. Specifically, there are two sets of hinge rods 61, gears 62, and transmission gears 63, and the two sets of hinge rods 61, gears 62, and transmission gears 63 are symmetrically arranged on both sides of the central axis of the trigger box 2 with the vertical central axis of the trigger box 2 as the axis of symmetry, thereby ensuring the stability of the transmission of the power restoration component 6.

[0025] Specifically, the driven bevel gear 66 meshes with the driving bevel gear 64 to achieve transmission. When the rack 62 drives the transmission gear 63 to rotate, the rotating driving bevel gear 64 drives the driven bevel gear 66 to rotate, which in turn drives the threaded rod 65 to rotate. Furthermore, the threaded slide plate 67 is slidably connected to the bottom inner wall of the trigger box 2, thereby guiding and restricting the movement of the threaded slide plate 67. Specifically, the threaded slide plate 67 can only move horizontally along the bottom inner wall of the trigger box 2. At the same time, the two ends of the connecting spring 68 are fixedly connected to the outer walls of the threaded slide plate 67 and the push block 69, respectively. In addition, the inner wall of the push block 69 has a circular hole with a diameter larger than the outer diameter of the threaded rod 65, so as to... To avoid motion interference between the push block 69 and the threaded rod 65, the top of the push block 69 is provided with two sets of clamps, and the copper rod 610 passes through the inner wall of the two sets of clamps. The clamps are made of insulating material. When the push block 69 moves horizontally, it moves synchronously with the clamps to drive the copper rod 610. The trigger box 2 is provided with a power connector that matches the end of the copper rod 610. After it contacts the end of the copper rod 610, it provides temporary power to the original circuit. Specifically, the end of the copper rod 610 away from the leakage current protector 3 is connected to the internal circuit of the housing 1. So after the leakage current protector 3 is triggered to "trip", the copper rod 610 can provide power to the circuit connected to the housing 1 after it is connected to the power connector.

[0026] Specifically, while the residual current device (RCD) 3 triggers a trip and the alarm light on the top of the trigger box 2 sounds, the toggle block 4 rotates clockwise. At this time, due to the hinge rod 61, the gear 62 slides horizontally towards the RCD 3, thereby driving the transmission gear 63 to rotate. This, in conjunction with the driving bevel gear 64 and the driven bevel gear 66, drives the threaded rod 65 to rotate. Simultaneously, under the transmission of the threaded sliding plate 67, and with the help of the connecting spring 68, the push block 69 moves horizontally towards the RCD 3. The push block 69, together with the clamp plate on its top, drives the copper rod 610 to slowly connect with the power connector. Due to the time delay in the transmission between the threaded rod 65, the threaded slide plate 67, and the connecting spring 68, the leakage current protector 3 will only be restored after a period of time after tripping, giving the circuit user enough time to escape danger and react in time. Furthermore, through the elastic pressure of the connecting spring 68, the copper rod 610 can maintain a relatively stable state after connecting with the power connector, thereby ensuring the subsequent safe power supply of the circuit and preventing damage to electrical equipment due to power failure.

[0027] In addition, the bottom inner wall of the trigger box 2 is provided with a backstop component 7 to prevent the push block 69 from retracting after temporary power supply, thus preventing power instability. The backstop component 7 includes a limiting tooth 71. A rectangular groove is opened on the bottom inner wall of the push block 69. The limiting tooth 71 is opened on the top inner wall of the rectangular groove. A fixed seat 72 is fixedly installed on the bottom inner wall of the trigger box 2. A push plate 73 is slidably installed on the inner wall of the fixed seat 72. A guide plate is provided on the lower surface of the push plate 73. A reset spring 74 is fixedly connected between the guide plate and the inner wall of the fixed seat 72. A rotating rod 75 is rotatably installed on the inner wall of the fixed seat 72. A backstop plate 76 is fixedly installed through the rotating rod 75. A spiral spring 77 is sleeved on the arc-shaped outer wall of the rotating rod 75. An arc-shaped groove 78 is opened on the inner wall of the push plate 73. A through groove is opened on the inner wall of the backstop plate 76. A guide rod 79 is fixedly installed on the inner wall of the through groove.

[0028] Specifically, the limiting teeth 71 are arranged in several groups, and these groups are evenly distributed in a linear array on the top inner wall of the rectangular slot. The cross-section of each limiting tooth 71 is a right-angled triangle, and the inclined surface of each limiting tooth 71 faces the residual current device 3. Simultaneously, the width of the fixing base 72 is adapted to the width of the rectangular slot, thereby guiding and restricting the movement of the push block 69, allowing it to move only in the horizontal direction. Furthermore, the guide plate at the bottom of the push plate 73 is made of flexible material, and the fixing base 72 contains the push plate 7. The limiting element 3 ensures that the push plate 73 can only move to the left in the horizontal direction within the fixed seat 72, and will not move to the right. This allows the anti-reverse plate 76 to better provide a limiting effect for the limiting tooth 71. Furthermore, a circular groove with a diameter larger than the outer diameter of the spiral spring 77 is provided on the inner wall of the fixed seat 72, and the two ends of the spiral spring 77 are fixedly connected to the arc-shaped outer wall of the rotating rod 75 and the bottom inner wall of the circular groove, respectively. This ensures that the rotating rod 75 always experiences the reverse rotation of the spiral spring 77 and achieves a reset motion tendency when it rotates with the anti-reverse plate 76.

[0029] Furthermore, several sets of anti-reverse plates 76 are provided, and these sets of anti-reverse plates 76 are evenly distributed in a linear array on the inner wall of the fixed base 72. Simultaneously, the height of the through slot is greater than that of the push plate 73, allowing the anti-reverse plates 76 to rotate around the rotating rod 75 without being interfered with by the movement of the push plate 73. Additionally, the guide rod 79 is located inside the arc-shaped groove 78. When the push block 69 moves horizontally to the right along the inner wall of the trigger box 2, the limiting teeth 71 push the anti-reverse plates 76 along with the movement of the push block 69. Due to the arc-shaped groove 78 and the guide rod 79, the anti-reverse plates 76 will not interfere with the push block. The movement of block 69 causes interference. After the limiting tooth 71 passes the stop plate 76, the rotating rod 75 drives the stop plate 76 to reset due to the setting of the spiral spring 77. This causes the push block 69 to move to the left in the horizontal direction, interfering with and blocking it. After the leakage risk of the entire circuit is eliminated, it is only necessary to push the push plate 73 to the left to make the push plate 73 drive the stop plate 76 to swing counterclockwise, so that it no longer blocks the limiting tooth 71. This allows the operator to push the push block 69 to the left, thereby disconnecting the copper rod 610 from the power connector, thus facilitating the "on" operation of the leakage current protector 3.

[0030] In an embodiment of the present invention, the end of the copper rod 610 is provided with a lock head assembly 8 that enables a stable circuit connection. The lock head assembly 8 includes a transmission rod 81, the end of which is hinged to the side wall of the U-shaped limiting seat 5. The end of the transmission rod 81 away from the U-shaped limiting seat 5 is hinged to a U-shaped piece 82. A base plate 84 is fixedly installed on the inner wall of the trigger box 2. An arc-shaped copper sheet 83 is slidably installed on the upper surface of the base plate 84. The U-shaped piece 82 is slidably connected to the outer wall of the arc-shaped copper sheet 83. A circular plate 85 is fixedly installed through and on the end of the copper rod 610. A notch is provided on the inner wall of the circular plate 85. The height of the notch is adapted to the thickness of the transmission rod 81. A cylinder 86 is fixedly installed on the inner wall of the notch. A guide groove 87 is provided on the inner wall of the transmission rod 81.

[0031] Specifically, the lock assembly 8 is located on top of the U-shaped limiting seat 5, and the inner wall of the top of the U-shaped limiting seat 5 has a hole with a diameter matching the outer diameter of the copper rod 610, so that the copper rod 610 can slide horizontally along the hole under the push of the push block 69. At the same time, there are two sets of transmission rods 81, and the two sets of transmission rods 81 are symmetrically arranged about the vertical central axis of the circular plate 85. The cylinder 86 is located inside the guide groove 87. At this time, due to the sliding connection between the U-shaped part 82 and the arc-shaped copper sheet 83, the transmission rod 81 and the... A lever effect is formed between the cylinders 86. As the copper rod 610 moves closer to the center of the arc-shaped copper sheet 83, under the constraint of the cylinders 86 and the guide groove 87, the two sets of arc-shaped copper sheets 83 on the base plate 84 approach each other and are finally clamped on the outer side of the end of the copper rod 610. The arc-shaped copper sheets 83 are connected to the external power supply circuit. Finally, after the copper rod 610 is inserted between the two sets of arc-shaped copper sheets 83, the circuit is connected, and the power supply is restored after the leakage current protector 3 is disconnected. Furthermore, the wrapping effect of the two sets of arc-shaped copper sheets 83 makes the circuit connection more stable and avoids the occurrence of unstable power supply. Example 2

[0032] Please refer to the attached instruction manual for details. Figures 9-10 Based on Embodiment 1, the trigger box 2 is equipped with a docking assembly 9 to ensure the locking effect of the copper rod 610 end when energized. The docking assembly 9 includes a transmission plate 91, which is fixedly installed on the outer wall of the copper rod 610. A connecting rod 92 is fixedly installed on the side wall of the transmission plate 91. A guide ball 93 is fixedly installed on the lower surface of the end of the connecting rod 92 away from the transmission plate 91. An installation rod 94 is fixedly installed on the inner wall of the trigger box 2. A docking cylinder 95 is rotatably installed on the side wall of the installation rod 94. A spiral groove 96 is opened on the arc-shaped outer wall of the docking cylinder 95. The guide ball 93 is disposed inside the spiral groove 96. A rubber strip 97 is provided on the inner surface of the docking cylinder 95.

[0033] It is worth noting that the copper rod 610 penetrates the transmission plate 91, and the transmission plate 91 is fixedly connected to the copper rod 610. Furthermore, the lower surface of the connecting rod 92 is configured in an arc shape that matches the arc-shaped outer surface of the docking cylinder 95, allowing the lower surface of the connecting rod 92 to fit against the outer surface of the docking cylinder 95. Simultaneously, the docking cylinder 95 includes a cylinder made of insulating material and a copper ring disposed inside the cylinder. The copper ring fits against the outer surface of the copper rod 610, ensuring that when the copper rod 610 is inserted into the docking cylinder 95, it fits precisely against the copper ring, thereby achieving circuit continuity. Additionally, The inner surface of the docking cylinder 95 has a storage opening that matches the rubber strip 97. The rubber strip 97 is hollow inside so that it can contract and deform when compressed. Furthermore, the rubber strip 97 is spirally arranged with a large pitch along the inner surface of the docking cylinder 95. Specifically, the mounting rod 94 has a contact copper piece inside that contacts the copper ring. This contact copper piece is connected to the external power supply circuit. Finally, when the copper rod 610 docks with the docking cylinder 95, the circuit is connected, thereby providing power to the electrical equipment after the leakage current protection device 3 trips.

[0034] In this invention, when a leakage occurs in the power supply circuit of the transformer, the leakage current protector 3 triggers the protection mechanism, causing the toggle block 4 to deflect counterclockwise, thus cutting off the power supply circuit and activating the alarm light on the top of the trigger box 2 to alert the operator of the leakage accident. Simultaneously, the deflection of the toggle block 4 triggers the re-energizing component 6, which in turn drives the hinge rod 61. Due to the hinge rod 61, the gear 62 slides horizontally towards the leakage current protector 3, thereby driving the transmission gear 63 to rotate. This, in conjunction with the driving bevel gear 64 and the driven bevel gear 66, drives the threaded rod 65 to rotate. Under the transmission of the threaded sliding plate 67, and with the help of the connecting spring 68, the pusher block 69 moves horizontally towards the leakage current protector 3. At this time, the push block 69, together with the clamp plate set on its top, drives the copper rod 610 to move slowly to the right. At this time, in conjunction with the lock head assembly 8, under the restriction of the cylinder 86 and the guide groove 87, the two sets of arc-shaped copper plates 83 on the base plate 84 approach each other and finally clamp on the outer side of the end of the copper rod 610, thereby realizing the connection between the electrical circuit and the external power supply circuit. Due to the time delay of the transmission between the threaded rod 65, the threaded slide plate 67 and the connecting spring 68, the leakage current protector 3 will only restore power after a period of time after the "tripping" phenomenon, giving the circuit user enough time to escape danger and react in time. Furthermore, through the elastic pressure of the subsequent connecting spring 68, the copper rod 610 can maintain a relatively stable state after connecting with the power connector, thereby ensuring the subsequent safe power supply of the circuit and preventing damage to electrical equipment due to power failure.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A transformer with leakage current alarm function, comprising a housing, a trigger box fixedly installed on the top of the housing, an alarm light provided on the top of the trigger box, a leakage current protector fixedly installed on the inner wall of the trigger box, a toggle block movably connected to the side wall of the leakage current protector, and a U-shaped limit seat fixedly installed on the bottom inner wall of the trigger box, characterized in that: The trigger box is equipped with a power restoration component that can restore power supply after leakage trip and ensure the power restoration interval. A push block is slidably installed on the bottom inner wall of the trigger box. A copper rod is fixedly installed on the top of the push block by a clamp. A backstop component is provided on the bottom inner wall of the trigger box to prevent the push block from retracting after temporary power supply, thus preventing power instability. A lock head component is provided at the end of the copper rod to achieve stable circuit connection. The power restoration assembly includes a hinge rod, the top end of which is hinged to the end side wall of the lever, and the bottom end of which is hinged to a toothed rod. The toothed rod is slidably mounted on the bottom inner wall of the trigger box. A transmission gear is rotatably mounted on the inner wall of the trigger box, and a driving bevel gear is coaxially fixedly mounted on the transmission gear. A mounting plate is fixedly mounted on the bottom inner wall of the trigger box, and a threaded rod is rotatably mounted on the side wall of the mounting plate. A driven bevel gear is fixedly mounted through the threaded rod, and a threaded sliding plate is threadedly connected to the outer wall of the threaded rod. A connecting spring is fixedly connected to the side wall of the threaded sliding plate. The lever is L-shaped and is movably connected to the side wall of the leakage current protector by a hinge seat. The U-shaped limiting seat has an arc-shaped limiting groove on the outer wall near the leakage current protector that matches the end of the lever, and the bottom of the arc-shaped limiting groove is smooth. The clamping plates are provided in two sets, and both sets of clamping plates are set on the top outer wall of the push block. The clamping plates are made of insulating material. The lock assembly includes a transmission rod, the end of which is hinged to the side wall of a U-shaped limiting seat. A U-shaped component is hinged to the end of the transmission rod away from the U-shaped limiting seat. A base plate is fixedly installed on the inner wall of the trigger box. An arc-shaped copper sheet is slidably installed on the upper surface of the base plate. The U-shaped component is slidably connected to the outer wall of the arc-shaped copper sheet. A circular plate is fixedly installed through the end of the copper rod. A notch is formed on the inner wall of the circular plate. The height of the notch is adapted to the thickness of the transmission rod. A cylinder is fixedly installed on the inner wall of the notch. A guide groove is formed on the inner wall of the transmission rod.

2. A transformer with leakage current alarm function according to claim 1, characterized in that: The anti-reverse assembly includes limiting teeth. A rectangular groove is formed on the bottom inner wall of the push block. The limiting teeth are formed on the top inner wall of the rectangular groove. A fixed seat is fixedly installed on the bottom inner wall of the trigger box. A push plate is slidably installed on the inner wall of the fixed seat. A guide plate is provided on the lower surface of the push plate. A reset spring is fixedly connected between the guide plate and the inner wall of the fixed seat. A rotating rod is rotatably installed on the inner wall of the fixed seat. The rotating rod passes through and is fixedly installed with the anti-reverse plate. A spiral spring is sleeved on the arc-shaped outer wall of the rotating rod. An arc-shaped groove is formed on the inner wall of the push plate. A through-slot is formed on the inner wall of the anti-reverse plate. A guide rod is fixedly installed on the inner wall of the through-slot.

3. A transformer with leakage current alarm function according to claim 2, characterized in that: The limiting tooth has a right-angled triangular cross section, and the inclined surface of the limiting tooth faces the side of the leakage current protector. The width of the fixing base is adapted to the width of the rectangular groove. A circular groove with a diameter larger than the outer diameter of the spiral spring is opened on the inner wall of the fixing base, and the two ends of the spiral spring are fixedly connected to the arc-shaped outer wall of the rotating rod and the bottom inner wall of the circular groove, respectively.

4. A transformer with leakage current alarm function according to claim 3, characterized in that: The height of the through groove is greater than that of the push plate, and the guide rod is set inside the arc-shaped groove.

5. A transformer with leakage current alarm function according to claim 1, characterized in that: The trigger box is internally equipped with a docking assembly to ensure the locking effect of the copper rod end when energized. The docking assembly includes a transmission plate, which is fixedly installed on the outer wall of the copper rod. A connecting rod is fixedly installed on the side wall of the transmission plate. A guide ball is fixedly installed on the lower surface of the end of the connecting rod away from the transmission plate. An installation rod is fixedly installed on the inner wall of the trigger box. A docking cylinder is rotatably installed on the side wall of the installation rod. A spiral groove is formed on the arc-shaped outer wall of the docking cylinder. The guide ball is disposed inside the spiral groove. A rubber strip is provided on the inner surface of the docking cylinder.

6. A transformer with leakage current alarm function according to claim 5, characterized in that: The docking cylinder includes a cylinder body made of insulating material and a copper ring disposed inside the cylinder body. The copper ring is adapted to the outer surface of the copper rod. A receiving opening adapted to the rubber strip is opened on the arc-shaped inner surface of the docking cylinder. The rubber strip is hollow inside and is arranged in a large-pitch spiral along the arc-shaped inner surface of the docking cylinder.

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