Intelligent leakage voltage circuit breaker

Abstract

The invention discloses a leakage voltage intelligent circuit breaker, and belongs to the technical field of circuit breakers, the leakage voltage intelligent circuit breaker comprises a circuit breaker body, the circuit breaker body is provided with a switch handle, and the circuit breaker body is provided with an alarm assembly matched with a switch; the alarm assembly comprises a sliding groove formed in the circuit breaker body, and a sliding block is installed in the sliding groove in a sliding mode. According to the scheme, the alarm switch is arranged, when the switch handle automatically trips, the alarm switch is pressed, the alarm lamp is turned on, then when the electrical equipment is abnormal and needs to be maintained and the switch handle is pushed to open a gate, a user needs to open the protective cover firstly, and then the alarm switch is driven to move through the driving assembly in the process of opening the protective cover; therefore, when a user manually pushes the switch handle, the alarm switch is not triggered, so that the user can conveniently distinguish the switch-off reason of the circuit breaker, safety accidents caused by the fact that the user mistakenly closes the switch handle in the electric appliance maintenance process are avoided, and the effect of improving safety is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and more particularly to a leakage voltage intelligent circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time; a circuit breaker can be used to distribute electrical energy, start asynchronous motors infrequently, protect power lines and motors, etc., and automatically cut off the circuit when they are severely overloaded or have faults such as short circuit and undervoltage.

[0003] Existing circuit breakers can automatically cut off the power when a line fault such as overload or short circuit occurs, that is, they can open the switch automatically. When there is an electrical problem in the line and maintenance is required, in order to improve safety and prevent electric shock, maintenance personnel will generally manually open the switch before maintenance, and then carry out maintenance. However, the automatic opening and manual opening of existing circuit breakers cannot be distinguished. As a result, when maintenance personnel are performing maintenance, someone may mistakenly close the circuit breaker, thereby causing serious safety accidents.

[0004] In view of the above problems, some solutions are also provided in the prior art. For example, the Chinese patent application with publication number CN118136471A discloses a leakage voltage intelligent circuit breaker. The device is provided with a sensor support mechanism inside the control housing, and a touch sensor is provided at the outer ends of the two functional blocks. When the circuit breaker automatically trips, the operating member collides with the touch sensor, thereby causing the alarm to sound an alarm, indicating that a circuit fault occurs. By providing a spacing adjustment component inside the control housing, when manually pushing the gate, the operating member presses the control panel to move the two functional blocks closer together, and the operating member does not collide with the touch sensor, so that the manual pushing of the gate does not sound an alarm, so that uninformed personnel can promptly learn the reason for the trip. Although the prior art can facilitate personnel to learn the reason for the trip, the prior art requires manual pressing of the control panel during the manual gate opening process to prevent the alarm from sounding, thereby causing certain inconveniences in the use of the circuit breaker, and when the gate opener forgets or does not know to press the control panel, the alarm still cannot sound an alarm, thereby still causing certain safety risks. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention aims to provide a leakage voltage intelligent circuit breaker, which can achieve the purpose of improving safety.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A leakage voltage intelligent circuit breaker comprises a circuit breaker body, a switch handle is provided on the circuit breaker body, and an alarm component matched with the switch is provided on the circuit breaker body;

[0008] The alarm component comprises a slide groove provided on the circuit breaker body, a slider is slidably installed in the slide groove, and a return spring is fixedly installed between the slider and the slide groove, an alarm light is fixedly installed on the circuit breaker body, an alarm switch electrically connected to the alarm light is fixedly installed on the slider, and a driving component is provided on the circuit breaker body;

[0009] The driving assembly includes a rotating rod rotatably mounted on the circuit breaker body, a mounting groove is provided on the circuit breaker body, a protective cover matched with the switch handle is fixedly mounted on the rotating rod, a first push rod is fixedly mounted on the rotating rod, a spring telescopic rod is fixedly mounted on the slider, the output end of the spring telescopic rod is an inclined surface, and the elastic coefficient of the spring telescopic rod is greater than the elastic coefficient of the reset spring, the switch handle is provided with a groove matched with the alarm switch, and a fixing assembly matched with the protective cover is provided on the circuit breaker body.

[0010] Furthermore, the fixing assembly includes a linkage groove provided on the circuit breaker body, a fixing rod slidably matched with the linkage groove is fixedly installed on the protective cover, a fixing hole is provided on the fixing rod, a limiting groove connected with the linkage groove is provided on the circuit breaker body, a limiting rod is slidably installed in the limiting groove, a first spring is fixedly installed between the limiting rod and the limiting groove, and one end of the limiting rod close to the fixing rod is an inclined surface.

[0011] Furthermore, a groove communicating with the outside is provided on the limit groove, a connecting rod fixedly connected to the limit rod is slidably installed in the groove, a magnet block is embedded in the limit rod, a horizontal groove is provided on the circuit breaker body, and a coil electrically connected to the alarm light is fixedly installed in the horizontal groove.

[0012] Furthermore, a push plate is fixedly mounted on one end of the linkage rod away from the limiting rod, and friction patterns are arranged on the push plate.

[0013] Furthermore, a reset pad is fixedly installed between the first push rod and the mounting groove, a sealing pad is provided on the circuit breaker body, a sealing cavity is opened on the sealing pad, a cavity is opened on the reset pad, a first air pipe is inserted in the cavity, a control component is provided on the circuit breaker body, and the cavity is connected with the sealing cavity through the first air pipe and the control component.

[0014] Furthermore, the control component includes a sealing rod slidably installed in the linkage groove, a second spring is commonly installed between the bottom wall of the sealing rod and the linkage groove, a connecting hole connected to the first air pipe is opened on the sealing rod, a second air pipe connected to the linkage hole is inserted into the sealing cavity, an air intake valve is inserted into the cavity, and a third air pipe extending into the sealing cavity is fixedly installed on the input end of the air intake valve.

[0015] Furthermore, an iron core cooperating with the coil is fixedly installed in the horizontal groove.

[0016] Furthermore, the inclined surface of the spring telescopic rod is a smooth mirror surface.

[0017] Furthermore, the protective cover is made of flame-retardant PC plastic.

[0018] Furthermore, the sealing gasket is in the shape of a rectangular ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) This solution sets an alarm switch. When the switch handle automatically trips, the alarm switch will be pressed and the alarm light will be turned on. When the electrical equipment is abnormal and needs to be repaired and the switch handle is pushed to open, the user must first open the protective cover. During the process of opening the protective cover, the alarm switch will be driven to move by the driving component. When the user manually pushes the switch handle, the alarm switch will not be triggered, so that it is easy for the personnel to distinguish the reason for the circuit breaker opening, and avoid the safety accident caused by the personnel mistakenly closing the switch handle during the electrical maintenance process, thereby improving safety.

[0021] (2) This solution sets a fixing component, which drives the fixing rod to be inserted into the linkage groove when the protective cover is closed. At this time, the limit rod can fix the fixing rod through the fixing hole, so that the protective cover can be fixed, thereby effectively preventing naughty children from playing with the circuit breaker at will and leaving serious safety hazards, further improving safety. At the same time, when the alarm light is on, the coil is energized and drives the limit rod to disengage from the fixing hole through the magnet block, so that the user can close the switch handle when the circuit breaker trips;

[0022] (3) This solution provides a sealing gasket. When the user closes the protective cover, the gas in the cavity will flow into the sealing cavity, causing the sealing gasket to expand and fit the protective cover, thereby effectively preventing the risk of external dust or water stains flowing through the protective cover to the switch handle and affecting the normal automatic tripping of the switch handle, thereby further improving safety; and by providing a control component, the airflow will flow into the sealing cavity only after the protective cover is closed, that is, the sealing gasket will expand only after the protective cover is closed, thereby effectively preventing the sealing gasket from expanding prematurely and affecting the normal closure of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 a side cutaway view of the mid-drive assembly;

[0025] Figure 3 For the present invention Figure 1 A side cross-sectional view of the fixing assembly;

[0026] Figure 4 It is a combination diagram of the sealing gasket, the switch handle and the alarm switch of the present invention;

[0027] Figure 5 is a top cross-sectional view of the sealing gasket of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the spring telescopic rod of the present invention;

[0029] Figure 7 It is a side view of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Circuit breaker body; 2. Switch handle;

[0032] 3. Alarm assembly; 302. Slider; 303. Return spring; 304. Alarm switch; 305. Alarm light;

[0033] 4. Driving assembly; 401. Rotating rod; 402. Protective cover; 403. First push rod; 404. Spring telescopic rod; 405. Groove;

[0034] 5. Fixing assembly; 501. Linking groove; 502. Fixing rod; 503. Fixing hole; 504. Limiting rod; 505. First spring; 506. Groove; 507. Linking rod; 508. Magnet block; 509. Coil; 5010. Push plate; 5011. Friction pattern;

[0035] 601, reset pad; 602, sealing pad; 603, sealing cavity; 604, cavity; 605, first air pipe; 606, sealing rod; 607, second spring; 608, connecting hole; 609, second air pipe; 6010, air inlet valve; 6011, third air pipe;

[0036] 7. Iron core. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 7 , a leakage voltage intelligent circuit breaker, comprising a circuit breaker body 1, a switch handle 2 is provided on the circuit breaker body 1, and an alarm component 3 cooperating with the switch is provided on the circuit breaker body 1;

[0039] The alarm component 3 includes a slide groove provided on the circuit breaker body 1, a slider 302 is slidably installed in the slide groove, and a return spring 303 is fixedly installed between the slider 302 and the slide groove, an alarm light 305 is fixedly installed on the circuit breaker body 1, an alarm switch 304 electrically connected to the alarm light 305 is fixedly installed on the slider 302, and a driving component 4 is provided on the circuit breaker body 1;

[0040] The driving assembly 4 includes a rotating rod 401 rotatably mounted on the circuit breaker body 1, a mounting groove is provided on the circuit breaker body 1, a protective cover 402 matched with the switch handle 2 is fixedly mounted on the rotating rod 401, a first push rod 403 is fixedly mounted on the rotating rod 401, a spring telescopic rod 404 is fixedly mounted on the slider 302, the output end of the spring telescopic rod 404 is an inclined surface, and the elastic coefficient of the spring telescopic rod 404 is greater than the elastic coefficient of the reset spring 303, a groove 405 matched with the alarm switch 304 is provided on the switch handle 2, and a fixing assembly 5 matched with the protective cover 402 is provided on the circuit breaker body 1.

[0041] When using high-power electrical appliances, the line may be overloaded, and then the switch handle 2 on the circuit breaker body 1 will be automatically triggered and opened. During the process of the switch handle 2 automatically opening, the switch handle 2 will press the alarm switch 304 and make the alarm light 305 energized and light up red, thereby informing people that the circuit breaker has automatically tripped. Then, the user can open the protective cover 402 and push the switch handle 2 to close the circuit breaker while ensuring safety.

[0042] Then, when the electrical equipment in the line fails and needs to be repaired, the user can first open the protective cover 402 and manually switch the handle 2 to open the circuit breaker. At the same time, the protective cover 402 drives the rotating rod 401 to rotate during the process of the user opening the protective cover 402, and then drives the first push rod 403 to rotate during the rotation of the rotating rod 401. During the rotation of the first push rod 403, it gradually contacts the spring telescopic rod 404 and applies a thrust to the inclined surface of the spring telescopic rod 404. Since the elastic coefficient of the spring telescopic rod 404 is greater than the elastic coefficient of the reset spring 303, the spring telescopic rod 404 is displaced under the action of the thrust, and then the alarm switch 304 is driven to move through the slider 302 during the movement of the spring telescopic rod 404. At this time, the reset spring 303 is compressed and has a tendency to recover. Since the alarm switch 304 moves, the user manually pushing the switch handle 2 at this time will not trigger the alarm switch 304, which can then tell people that this is repairing the electrical equipment, avoiding people from arbitrarily pushing the switch handle 2 to close the circuit breaker and causing electric shock to the maintenance personnel, thereby improving safety.

[0043] After the maintenance of the electrical equipment is completed and the user closes the switch, the protective cover 402 gradually resets again and covers the switch handle 2. Then, during the process of resetting the switch handle 2, the first push rod 403 is driven to reset by the rotating rod 401. During the process of resetting the first push rod 403, it gradually loses contact with the spring telescopic rod 404. At this time, the first spring 505 stretches and drives the alarm switch 304 to reset through the slider 302, thereby preparing for work again.

[0044] During the process of the switch handle 2 automatically triggering and opening the gate, the switch handle 2 drives the groove 405 to press the alarm switch 304, and the alarm switch 304 is placed in the groove 405, and then the alarm switch 304 cannot move under the action of the groove 405. When the user checks that the line is correct and recloses the switch, the user can first open the protective cover 402, and then the protective cover 402 drives the first push rod 403 to rotate through the rotating rod 401. During the rotation of the first push rod 403, it gradually contacts the inclined surface of the spring telescopic rod 404 and applies a thrust to the inclined surface of the spring telescopic rod 404. Since the alarm switch 304 cannot move at this time, the spring telescopic rod 404 cannot move, and then the output end of the spring telescopic rod 404 contracts under the action of the thrust and has a tendency to recover. When the first push rod 403 is out of contact with the spring telescopic rod 404, the output end of the spring telescopic rod 404 extends and resets. When the protective cover 402 is opened, the user can push the switch handle 2 to close the circuit breaker. After the closing is completed, the protective cover 402 closes and drives the first push rod 403 to reset through the rotating rod 401. During the resetting process of the first push rod 403, it contacts the inclined surface of the spring telescopic rod 404 again and applies a thrust to the inclined surface of the spring telescopic rod 404. Then, under the action of the thrust, the output end of the spring telescopic rod 404 contracts and has a tendency to recover. When the first push rod 403 is out of contact with the spring telescopic rod 404, the output end of the spring telescopic rod 404 extends and resets, thereby effectively preventing the opening of the protective cover 402 from affecting the normal alarm of the alarm light 305.

[0045] like Figure 1 , Figure 3 As shown, the fixing assembly 5 includes a linkage groove 501 provided on the circuit breaker body 1, a fixing rod 502 slidably matched with the linkage groove 501 is fixedly installed on the protective cover 402, a fixing hole 503 is provided on the fixing rod 502, a limiting groove connected with the linkage groove 501 is provided on the circuit breaker body 1, a limiting rod 504 is slidably installed in the limiting groove, a first spring 505 is fixedly installed between the limiting rod 504 and the limiting groove, and one end of the limiting rod 504 close to the fixing rod 502 is an inclined surface.

[0046] The limiting groove is provided with a groove 506 connected to the outside, a linkage rod 507 fixedly connected to the limiting rod 504 is slidably installed in the groove 506, a magnet block 508 is embedded in the limiting rod 504, a horizontal groove is provided on the circuit breaker body 1, a coil 509 electrically connected to the alarm light 305 is fixedly installed in the horizontal groove.

[0047] A push plate 5010 is fixedly mounted on one end of the linkage rod 507 away from the limiting rod 504 , and a friction pattern 5011 is provided on the push plate 5010 .

[0048] By adopting the above technical solution, during the closing process of the protective cover 402, the protective cover 402 drives the fixing rod 502 to be inserted into the linkage groove 501, and then during the insertion of the fixing rod 502 into the linkage groove 501, the bottom wall of the fixing rod 502 gradually contacts the inclined surface of the limiting rod 504, and applies a thrust to the inclined surface of the fixing rod 502, and then the limiting rod 504 moves and compresses the first spring 505 under the action of the thrust, and as the fixing rod 502 moves, the fixing hole 503 gradually contacts the limiting rod 504, and when the protective cover 402 is fitted with the circuit breaker body 1, the fixing hole 503 contacts the limiting rod 504, and at this time the first spring 505 stretches and drives the limiting rod 504 to be inserted into the fixing hole 503, so that the fixing rod 502 can be fixed, that is, the protective cover 402 can be fixed, thereby effectively preventing naughty children from playing with the circuit breaker at will and leaving serious safety hazards, thereby further improving safety.

[0049] When it is necessary to open the protective cover 402, the user can first push the connecting rod 507, and then drive the limit rod 504 to move during the movement of the connecting rod 507 and make the limit rod 504 disengage from the fixing hole 503. At this time, the fixing effect of the protective cover 402 is released, and then the user can open the protective cover 402 and push the switch handle 2, which makes it easier to push the switch handle 2.

[0050] When the switch handle 2 automatically trips and the alarm light 305 is powered on and lights up, the coil 509 is energized and generates a magnetic field. Then, under the action of the magnetic field, the magnet block 508 drives the limit rod 504 to break contact with the fixing hole 503. At this time, the first spring 505 is compressed and has a tendency to recover. That is, after the switch handle 2 automatically trips, the protective cover 402 will be automatically released, which makes it convenient for the user to close the switch handle 2 again, thereby improving the convenience of the circuit breaker.

[0051] When the user needs to push the limit rod 504 to move through the connecting rod 507, the user can drive the connecting rod 507 to move through the push plate 5010. At the same time, the push plate 5010 can always block the groove 506, thereby preventing external dust or stains from falling into the groove 506 and affecting the normal movement of the connecting rod 507. In addition, by providing a friction pattern 5011 on the push plate 5010, the friction between the push plate 5010 and the user's hand can be increased, thereby making it easier for the user to push the push plate 5010 to move, thereby making it easier for the user to push the limit rod 504 to move.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 5As shown, a reset pad 601 is fixedly installed between the first push rod 403 and the mounting groove, a sealing pad 602 is provided on the circuit breaker body 1, a sealing cavity 603 is opened on the sealing pad 602, a cavity 604 is opened on the reset pad 601, a first air pipe 605 is inserted into the cavity 604, a control component is provided on the circuit breaker body 1, and the cavity 604 is connected with the sealing cavity 603 through the first air pipe 605 and the control component.

[0053] The control component includes a sealing rod 606 slidably installed in the linkage groove 501, a second spring 607 is installed between the bottom wall of the sealing rod 606 and the linkage groove 501, a connecting hole 608 connected to the first air pipe 605 is opened on the sealing rod 606, a second air pipe 609 connected to the linkage hole is inserted in the sealing cavity 603, an air intake valve 6010 is inserted in the cavity 604, and a third air pipe 6011 extending into the sealing cavity 603 is fixedly installed on the input end of the air intake valve 6010.

[0054] By adopting the above technical solution, when the user opens the protective cover 402, the protective cover 402 stretches the reset pad 601 through the rotating rod 401 and the first push rod 403. When the user releases the protective cover 402, the reset pad 601 contracts and drives the protective cover 402 to automatically reset through the first push rod 403 and the rotating rod 401. After the user manually opens the switch handle 2, the protective cover 402 will close automatically, thereby preventing naughty children from accidentally touching the switch handle 2 when the user is repairing the electrical equipment, and causing the switch handle 2 to close, thereby further improving safety.

[0055] When the user uses the first push rod 403 to stretch the reset pad 601, the cavity 604 inhales air from the sealed cavity 603 through the air inlet valve 6010 and the third air pipe 6011. Then, when the reset pad 601 is reset, the gas in the cavity 604 is squeezed and flows to the sealed cavity 603 through the first air pipe 605 and the control component. Then, under the action of the gas, the sealing pad 602 expands and fits the protective cover 402, thereby increasing the sealing effect of the protective cover 402 on the switch handle 2, thereby effectively preventing the risk of external dust or water stains flowing to the switch handle 2 through the protective cover 402 and affecting the normal automatic tripping of the switch handle 2, thereby achieving the purpose of reducing safety hazards.

[0056] By setting a control component, when the reset pad 601 contracts and drives the fixed rod 502 to enter the linkage groove 501 through the first push rod 403, the rotating rod 401 and the protective cover 402, the gas in the cavity 604 is squeezed and tends to flow to the outside through the first air pipe 605. Then, when the fixed rod 502 enters the linkage groove 501, the fixed rod 502 gradually contacts the sealing rod 606 and applies a thrust to the sealing rod 606. Then, under the action of the thrust, the sealing rod 606 moves and compresses the second spring 607. During the movement of the sealing rod 606, the connecting hole 608 is driven to gradually contact the first air pipe 605, and when the limiting rod 504 is inserted into the fixing hole 503, the connecting hole 608 is connected to the first air pipe 605. At this time, the airflow in the cavity 604 flows into the sealing cavity 603 through the first air pipe 605, the connecting hole 608, and the second air pipe 609, and causes the sealing gasket 602 to expand. That is, the sealing gasket 602 will not expand until the protective cover 402 is closed, thereby effectively preventing the expansion of the sealing gasket 602 from affecting the normal closure of the protective cover 402.

[0057] like Figure 3 As shown, an iron core 7 cooperating with the coil 509 is fixedly installed in the horizontal groove.

[0058] By adopting the above technical solution, when the coil 509 is energized to generate a magnetic field, by setting the iron core 7, the iron core 7 will generate an induced magnetic field in the same direction as the magnetic field of the coil 509, thereby enhancing the magnetic field of the coil 509, thereby ensuring that under the action of the magnetic field, the magnet block 508 can normally drive the limit rod 504 to break contact with the fixing hole 503.

[0059] like Figure 6 As shown, the inclined surface of the spring telescopic rod 404 is a smooth mirror surface.

[0060] By adopting the above technical solution, during the process in which the first push rod 403 drives the output end of the spring telescopic rod 404 to contract via the inclined surface of the spring telescopic rod 404, the inclined surface of the spring telescopic rod 404 will rub against the first push rod 403. By making the inclined surface of the spring telescopic rod 404 smooth and mirror-like, the friction between the first push rod 403 and the inclined surface of the spring telescopic rod 404 can be reduced, thereby ensuring that the first push rod 403 normally drives the output end of the spring telescopic rod 404 to contract.

[0061] like Figure 7 As shown, the protective cover 402 is made of flame-retardant PC plastic.

[0062] By adopting the above technical solution, since the flame retardant PC plastic is a high-performance fireproof transparent plastic, the protective cover 402 has excellent flame retardant properties and can effectively prevent the spread of flames when encountering a fire source. At the same time, it also has a high degree of transparency, which makes it easy to observe the condition of the switch handle 2.

[0063] like Figure 5 As shown, the sealing gasket 602 is in the shape of a rectangular ring.

[0064] By adopting the above technical solution, by making the sealing gasket 602 into a rectangular ring shape, when the sealing gasket 602 expands, it can fit around the protective cover 402, thereby improving the sealing effect of the protective cover 402.

[0065] Instructions for use: When using high-power electrical appliances, the line may be overloaded, and then the switch handle 2 on the circuit breaker body 1 will automatically trigger and open the gate. During the process of the switch handle 2 automatically opening the gate, the switch handle 2 will press the alarm switch 304, and the alarm light 305 will be powered on and light up red; when the user opens the protective cover 402, the protective cover 402 drives the rotating rod 401 to rotate, and then drives the first push rod 403 to rotate during the rotation of the rotating rod 401. During the rotation of the first push rod 403, it gradually contacts the spring telescopic rod 404 and applies thrust to the inclined surface of the spring telescopic rod 404. Since the elastic coefficient of the spring telescopic rod 404 is greater than the elastic coefficient of the reset spring 303, , so the spring telescopic rod 404 is displaced under the action of the thrust, and then the alarm switch 304 is driven to move through the slider 302 during the movement of the spring telescopic rod 404, at this time the reset spring 303 is compressed and has a tendency to recover, and since the alarm switch 304 moves, the user manually pushing the switch handle 2 at this time will not trigger the alarm switch 304; in the process of closing the protective cover 402, the protective cover 402 drives the fixing rod 502 to insert into the linkage groove 501, and then in the process of the fixing rod 502 being inserted into the linkage groove 501, the bottom wall of the fixing rod 502 gradually contacts the inclined surface of the limiting rod 504, and applies a thrust to the inclined surface of the fixing rod 502, and then under the thrust Under the action, the limiting rod 504 moves and compresses the first spring 505. As the fixing rod 502 moves, the fixing hole 503 gradually contacts the limiting rod 504. When the protective cover 402 is fitted with the circuit breaker body 1, the fixing hole 503 contacts the limiting rod 504. At this time, the first spring 505 stretches and drives the limiting rod 504 to be inserted into the fixing hole 503, so that the fixing rod 502 can be fixed, that is, the protective cover 402 can be fixed; when the switch handle 2 automatically trips and the alarm light 305 is powered on and lights up, the coil 509 is energized and generates a magnetic field. Then, under the action of the magnetic field, the magnet block 508 drives the limiting rod 504 to disengage from the fixing hole 503. At this time, the first spring 505 is It is compressed and has a tendency to recover, that is, after the switch handle 2 automatically trips, the protective cover 402 will be automatically released; when the user's first push rod 403 stretches the reset pad 601, the cavity 604 inhales air from the sealed cavity 603 through the air inlet valve 6010 and the third air pipe 6011, and then when the reset pad 601 is reset, the gas in the cavity 604 is squeezed and flows to the sealed cavity 603 through the first air pipe 605 and the control component, and then the sealing pad 602 expands under the action of the gas and fits the protective cover 402, thereby increasing the sealing effect of the protective cover 402 on the switch handle 2, thereby effectively preventing the risk of external dust or water stains flowing to the switch handle 2 through the protective cover 402.

[0066] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leakage voltage intelligent circuit breaker, comprising a circuit breaker body (1), wherein a switch handle (2) is provided on the circuit breaker body (1), and an alarm component (3) cooperating with the switch is provided on the circuit breaker body (1); Features: The alarm component (3) comprises a slide groove provided on the circuit breaker body (1), a slider (302) being slidably mounted in the slide groove, and a return spring (303) being fixedly mounted between the slider (302) and the slide groove, an alarm light (305) being fixedly mounted on the circuit breaker body (1), an alarm switch (304) being electrically connected to the alarm light (305) being fixedly mounted on the slider (302), and a drive component (4) being provided on the circuit breaker body (1); The driving assembly (4) comprises a rotating rod (401) rotatably mounted on a circuit breaker body (1); a mounting groove is provided on the circuit breaker body (1); a protective cover (402) matched with a switch handle (2) is fixedly mounted on the rotating rod (401); a first push rod (403) is fixedly mounted on the rotating rod (401); a spring telescopic rod (404) is fixedly mounted on the slider (302); the output end of the spring telescopic rod (404) is an inclined surface, and the elastic coefficient of the spring telescopic rod (404) is greater than the elastic coefficient of the reset spring (303); a groove (405) matched with an alarm switch (304) is provided on the switch handle (2); and a fixing assembly (5) matched with the protective cover (402) is provided on the circuit breaker body (1).

2. The leakage voltage intelligent circuit breaker according to claim 1, characterized in that: The fixing assembly (5) comprises a linkage groove (501) provided on the circuit breaker body (1); a fixing rod (502) slidably matched with the linkage groove (501) is fixedly mounted on the protective cover (402); a fixing hole (503) is provided on the fixing rod (502); a limiting groove connected with the linkage groove (501) is provided on the circuit breaker body (1); a limiting rod (504) is slidably mounted in the limiting groove; a first spring (505) is fixedly mounted between the limiting rod (504) and the limiting groove; and one end of the limiting rod (504) close to the fixing rod (502) is an inclined surface.

3. The leakage voltage intelligent circuit breaker according to claim 2 is characterized in that: The limiting groove is provided with a groove (506) communicating with the outside, a linkage rod (507) fixedly connected to the limiting rod (504) is slidably installed in the groove (506), a magnet block (508) is embedded in the limiting rod (504), a horizontal groove is provided on the circuit breaker body (1), and a coil (509) electrically connected to the alarm light (305) is fixedly installed in the horizontal groove.

4. The leakage voltage intelligent circuit breaker according to claim 3 is characterized in that: A push plate (5010) is fixedly mounted on one end of the linkage rod (507) away from the limiting rod (504), and a friction pattern (5011) is provided on the push plate (5010).

5. The leakage voltage intelligent circuit breaker according to claim 1, characterized in that: A reset pad (601) is fixedly installed between the first push rod (403) and the installation groove; a sealing pad (602) is provided on the circuit breaker body (1); a sealing cavity (603) is provided on the sealing pad (602); a cavity (604) is provided on the reset pad (601); a first air pipe (605) is inserted into the cavity (604); a control component is provided on the circuit breaker body (1); and the cavity (604) is connected to the sealing cavity (603) via the first air pipe (605) and the control component.

6. The leakage voltage intelligent circuit breaker according to claim 5, characterized in that: The control assembly comprises a sealing rod (606) slidably mounted in a linkage groove (501); a second spring (607) is installed between the bottom wall of the sealing rod (606) and the linkage groove (501); a connecting hole (608) connected to the first air pipe (605) is opened on the sealing rod (606); a second air pipe (609) connected to the linkage hole is inserted into the sealing cavity (603); an air intake valve (6010) is inserted into the cavity (604); and a third air pipe (6011) extending into the sealing cavity (603) is fixedly installed on the input end of the air intake valve (6010).

7. The leakage voltage intelligent circuit breaker according to claim 3, characterized in that: An iron core (7) matched with the coil (509) is fixedly installed in the horizontal groove.

8. The leakage voltage intelligent circuit breaker according to claim 1, characterized in that: The inclined surface of the spring telescopic rod (404) is a smooth mirror surface.

9. The leakage voltage intelligent circuit breaker according to claim 1, characterized in that: The protective cover (402) is made of flame-retardant PC plastic.

10. The leakage voltage intelligent circuit breaker according to claim 5, characterized in that: The sealing gasket (602) is in the shape of a rectangular ring.

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