Electrical loop protection device

Abstract

The invention discloses an electrical loop protection device, and belongs to the technical field of circuit protection. The device comprises a protective shell and a magnetic pushing assembly fixedly arranged in an inner cavity of the protective shell, a rotating assembly is rotationally installed in the inner cavity of the protective shell, a shifting rod is rotationally installed on the top face of the inner cavity of the protective shell, and the shifting rod and the rotating assembly are movably connected through a connecting ring; a conductive assembly and a thermal deformation metal plate are further fixedly installed on the side wall of the protective shell, a control assembly and a heating assembly are fixedly installed on the bottom face of the concave position of an inner cavity of the protective shell, and an induction assembly is fixedly installed on the bottom face of the convex position of the inner cavity of the protective shell. According to the invention, even if the magnetic pushing assembly, the rotating assembly, the shifting rod and the connecting ring are stuck in the operation process, the thermal deformation metal plate can still be heated by electromagnetic heating, the circuit breaking is realized in an auxiliary manner, and the safety of the circuit is improved. And the probability of electrical accidents is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit protection, and in particular relates to an electrical circuit protection device. Background Art

[0002] An electrical circuit refers to a current path composed of a power supply, switches, various electrical appliances and other loads. In order to monitor whether the electrical circuit is operating normally and to protect the electrical equipment in the electrical circuit, an electrical circuit protection device is generally installed in the electrical circuit. The electrical circuit protection device can mainly prevent electrical equipment from being damaged in the event of overcurrent, overvoltage, electromagnetic interference and surge, so as to maintain the normal operation of the electrical circuit.

[0003] Chinese patent CN221466515U announces a circuit breaker snap mechanism and a circuit breaker, including a shell and a track clip. A boss is provided at the bottom of the shell. The track clip is slidably connected to the boss for clamping the track. The inner hollow of the boss forms a receiving cavity for wiring. In the actual use of the circuit breaker, although the circuit breaker itself can provide protection against overload and short circuit faults, the protection capability of the circuit breaker is relatively weak for special cases such as leakage. Therefore, it is necessary to connect leakage accessories and other devices to provide additional safety protection. The circuit breaker usually uses a wire to be electrically connected to the leakage accessories. The receiving cavity can be used as a wiring space for the wire. Without increasing the overall volume of the circuit breaker, the internal space of the shell is expanded. Using the receiving cavity for wiring further improves the space utilization rate, and there is no need to change other structures of the shell. The mold only needs to be improved for the structure of the boss, which greatly reduces the production cost.

[0004] Although the circuit breaker proposed in the above-mentioned prior art can provide protection for the electrical circuit against overload and short circuit faults, the circuit breaker disclosed in the above-mentioned prior art has the risk of getting stuck during operation. When the electrical circuit is overloaded or short-circuited, if the circuit breaker mentioned in the above-mentioned prior art gets stuck, the circuit breaker will not be able to disconnect the circuit in time, which will cause continuous arcing between the two contacts of the circuit, causing serious damage to the contacts. In addition, continuous arcing will also generate high temperature inside the circuit breaker, causing damage to the internal components of the circuit breaker, and even leading to electrical accidents such as line fire.

[0005] Therefore, we propose an electrical circuit protection device to solve the above-mentioned problems. Summary of the invention

[0006] In view of the problem in the prior art that when a circuit breaker is stuck, the circuit breaker cannot disconnect the circuit in time, so that arcing will continue between the two contacts of the circuit, which will not only cause serious damage to the contacts but also damage the components inside the circuit breaker, the purpose of the present invention is to provide an electrical circuit protection device.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is as follows: an electrical circuit protection device, comprising a protective shell and a magnetic push assembly fixedly arranged in the inner cavity of the protective shell, a rotating assembly is rotatably installed in the inner cavity of the protective shell, and the rotating assembly is arranged directly below the magnetic push assembly, a lever is rotatably installed on the top surface of the inner cavity of the protective shell, and the lever is arranged directly above the rotating assembly, the lever and the rotating assembly are movably connected through a connecting ring, a metal arc extinguishing grid is fixedly installed on the side wall of the inner cavity of the protective shell, a conductive assembly and a thermally deformed metal plate are also fixedly installed on the side wall of the protective shell, a control assembly and a heating assembly are respectively fixedly installed on the bottom surface of the recessed part of the inner cavity of the protective shell, the control assembly and the heating assembly are electrically connected through wires, an induction assembly is fixedly installed on the bottom surface of the raised part of the inner cavity of the protective shell, the induction assembly and the rotating assembly are movably connected, the induction assembly and the control assembly are electrically connected through wires, a separation assembly is fixedly installed on the side wall of the inner cavity of the protective shell and the top surface of the conductive assembly, and the separation assembly and the control assembly are electrically connected through wires.

[0008] Furthermore, the protective shell includes a shell, a through slot is provided on an outer wall of one side of the shell, and the pushing end of the shifting rod is rotatably arranged in an inner cavity of the through slot.

[0009] Furthermore, the magnetic push assembly includes an electromagnetic push rod fixedly installed in the inner cavity of the shell, and a static touch plate is fixedly installed on the bottom surface of the electromagnetic push rod; The rotating assembly includes a support frame fixedly mounted on the bottom surface of the protrusion of the shell cavity and a pressure plate rotatably mounted on the support frame. The pressure plate and the electromagnetic push rod are elastically connected through a first spring, and the pressure plate and the conductive assembly are elastically connected through a second spring.

[0010] Furthermore, the conductive component includes a fixing frame fixedly mounted on the side wall of the shell cavity and a moving touch plate rotatably mounted on the fixing frame, an L-shaped conductive sheet is fixedly mounted on the bottom surface of the moving touch plate, and the lower end of the L-shaped conductive sheet is in contact with the top surface of the thermally deformed metal plate.

[0011] Furthermore, the static contact plate comprises a plate body fixedly mounted on the bottom surface of the electromagnetic push rod, and a static contact point is fixedly mounted at the lower edge of the triangular portion of the plate body.

[0012] Furthermore, the control assembly includes a mounting plate fixedly mounted on the bottom surface of the recessed portion of the inner cavity of the shell and a processor fixedly mounted on the top surface of the mounting plate.

[0013] Furthermore, the heating assembly includes a battery pack fixedly mounted on the bottom surface of the recessed portion of the shell cavity, the electrodes of the battery pack are electrically connected to a coil, and the thermally deformable metal plate is disposed in the inner circle of the coil.

[0014] Furthermore, the sensing component includes a hollow cylinder fixedly installed on the bottom surface of the protrusion of the shell cavity and a pressure sensor fixedly installed on the bottom surface of the inner cavity of the hollow cylinder. A slide plate is slidably installed in the inner cavity of the hollow cylinder, and a limit column is fixedly installed on the side wall of the pressure plate. The limit column and the slide plate are movably connected through a connecting rod.

[0015] Furthermore, the separation component includes a slide cylinder fixedly mounted on the side wall of the inner cavity of the shell and a push rod inserted and slidably installed in the inner cavity of the slide cylinder, the push rod and the inner wall of the inner cavity of the slide cylinder are elastically connected by a third spring, an electromagnet is fixedly mounted on the side wall of the inner cavity of the slide cylinder, a permanent magnet is fixedly mounted on the side wall of the end of the push rod close to the slide cylinder, the electromagnet and the permanent magnet are coaxially arranged, a base is fixedly mounted on the top surface of the moving touch plate, a slider is horizontally penetrated and slidably installed on the base, and a pair of push columns are vertically embedded and slidably installed on the base, the two push columns are elastically connected to the base by a fourth spring respectively, and the two push columns are both penetrated and slidably installed on the slider, and the slider and the side wall of the base are elastically connected by a fifth spring.

[0016] Furthermore, the base includes a base body fixedly installed on the top surface of the moving touch plate, a pair of slide grooves are opened on the base body, two top columns are correspondingly embedded and slidably installed in the inner cavities of the two slide grooves, and the top columns are elastically connected to the ground of the inner cavity of the slide grooves through a fifth spring, and a conductive hole is opened on the top surface of the base body, the conductive hole contacts with the moving touch plate for conduction, and the static contact can be inserted in the inner cavity of the conductive hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the time when the slide board triggers the pressure sensor is greater than the time set in the delay switch, the processor enables the battery pack to energize the coil, thereby heating the thermally deformed metal plate, so that the thermally deformed metal plate is bent by the heat. Even if the magnetic push assembly, the rotating assembly, the lever and the connecting ring are stuck during operation, the thermally deformed metal plate can still be heated by electromagnetic heating to assist in disconnecting the circuit and reduce the probability of electrical accidents.

[0018] 2. The heat-deformed metal plate in the traditional electrical circuit protection device will only be deformed by heat when the load in the circuit is too large, and its application scope is limited. Through the arrangement of the present invention, the heat-deformed metal plate in the electrical circuit protection device can not only play a circuit-breaking role when the load is too large, but also play an auxiliary circuit-breaking role when the electrical circuit protection device is stuck. It not only plays a preventive role, but also widens the application scope.

[0019] 3. By setting up the separation component, the speed of thermal deformation of the heat-deformed metal plate can be accelerated, which is conducive to achieving a rapid circuit breaking effect, reducing the arcing time, and further reducing the damage caused by the arc to the line and equipment.

[0020] 4. The present invention has a simple structure, reasonable design and is easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation positions of the internal components of the present invention; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 For the present invention Figure 2 A magnified view of point B; Figure 5 It is a schematic diagram of the three-dimensional structure of the sensing component of the present invention; Figure 6 It is a schematic diagram of the installation positions of the conductive component and the control component of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point C; Figure 8 It is a schematic diagram of the three-dimensional structure of the separation component of the present invention; Fig. 9 It is a schematic cross-sectional view of the separation assembly of the present invention.

[0022] In the figure: 1, protective shell; 11, shell; 12, through slot; 2, magnetic push assembly; 21, electromagnetic push rod; 22, static contact plate; 221, plate body; 222, static contact; 3, rotating assembly; 31, pressure plate; 32, first spring; 33, second spring; 34, support frame; 4, lever; 5, connecting ring; 6, metal arc extinguishing grid; 7, conductive assembly; 71, dynamic touch plate; 72, fixing frame; 73, L-shaped conductive sheet; 8, thermally deformed metal plate; 9, control assembly; 91, mounting plate; 92, processor; 93, temperature sensor; 94, delay Switch; 10, heating component; 101, battery pack; 102, coil; 20, induction component; 201, hollow cylinder; 202, pressure sensor; 203, slide plate; 204, limit column; 205, connecting rod; 30, separation component; 301, slide cylinder; 302, push rod; 303, third spring; 304, electromagnet; 305, permanent magnet; 306, base; 3061, base body; 3062, slide groove; 3063, conductive hole; 307, slider; 308, push column; 309, fourth spring; 320, fifth spring. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments.

[0024] To solve the problem that the circuit is short-circuited and the electrical circuit protection device is stuck, the electrical circuit protection device cannot disconnect the circuit normally, causing damage to electrical equipment and circuits, such as Figure 1 - Figure 7 As shown: An electrical circuit protection device comprises a protective shell 1 and a magnetic push assembly 2 fixedly arranged in the inner cavity of the protective shell 1. The magnetic push assembly 2 utilizes the electromagnetic induction phenomenon. When a sufficiently large current is passed through the magnetic push assembly 2, thrust can be generated. A rotating assembly 3 is rotatably installed in the inner cavity of the protective shell 1. The rotating assembly 3 is arranged directly below the magnetic push assembly 2. A lever 4 is rotatably installed on the top surface of the inner cavity of the protective shell 1. The lever 4 is arranged directly above the rotating assembly 3. The lever 4 and the rotating assembly 3 are movably connected through a connecting ring 5. When a short circuit occurs in the electrical circuit, the current in the circuit will surge. At this time, a large current will be passed through the magnetic push assembly 2, the magnetic push assembly 2 will start to operate, and a large thrust will be generated on one end of the magnetic push assembly 2 to the rotating assembly 3. The rotating assembly 3 starts to rotate. During the rotation of the rotating assembly 3, the other end of the rotating assembly 3 will drive the lever 4 to rotate through the connecting ring 5, and then a tripping phenomenon will occur.

[0025] A metal arc extinguishing grid 6 is fixedly installed on the side wall of the inner cavity of the protective shell 1. A conductive component 7 and a heat-deformed metal plate 8 are also fixedly installed on the side wall of the protective shell 1. When the heat-deformed metal plate 8 is heated to an appropriate temperature, the heat-deformed metal plate 8 will bend and deform. When the magnetic push component 2, the rotating component 3, the lever 4 and the connecting ring 5 get stuck during operation, the heat-deformed metal plate 8 is heated to assist in circuit breaking and reduce the probability of electrical accidents. A control component 9 and a heating component 10 are fixedly installed on the bottom surface of the recessed part of the inner cavity of the protective shell 1, and the control component 9 and the heating component 10 are electrically connected through wires. The heating component 10 is used to heat the heat-deformed metal plate 8 so that the heat-deformed metal plate 8 is bent by heat. An induction component 20 is fixedly installed on the bottom surface of the raised part of the inner cavity of the protective shell 1. The induction component 20 and the rotating component 3 are connected to each other. The rotating components 3 are movably connected, and the sensing component 20 is electrically connected to the control component 9 through wires. The sensing component 20 is used to sense whether the rotating component 3 is rotated into place, and is used to determine whether the magnetic push component 2, the rotating component 3, the lever 4 and the connecting ring 5 are stuck during operation. The side wall of the inner cavity of the protective shell 1 and the top surface of the conductive component 7 are jointly fixedly installed with a separation component 30, and the separation component 30 and the control component 9 are electrically connected through wires. When the thermally deformed metal plate 8 is bent by heat, the bending of the thermally deformed metal plate 8 is accelerated by the separation component 30, which is conducive to quickly disconnecting the circuit, reducing the arcing time, and thereby reducing the damage caused by the arc to the line and equipment. After the signal of the sensing component 20 is transmitted to the control component 9, the control component 9 determines whether to start the heating component 10 and the separation component 30.

[0026] The protective shell 1 includes a shell 11, and a through groove 12 is opened on the outer wall of one side of the shell 11. The pushing end of the lever 4 is rotatably arranged in the inner cavity of the through groove 12. The setting of the shell 11 supports and fixes the components inside the shell 11. The setting of the through groove 12 not only makes it convenient for personnel to observe the tripping phenomenon, but also makes it convenient for personnel to push the lever 4 to restore the circuit to a pass state.

[0027] The magnetic push assembly 2 includes an electromagnetic push rod 21 fixedly installed in the inner cavity of the shell 11, and a static touch plate 22 is fixedly installed on the bottom surface of the electromagnetic push rod 21. When a short circuit occurs in the electrical circuit, the current in the circuit will increase, so that the current flowing through the electromagnetic push rod 21 will increase. Under the action of electromagnetic induction, the electromagnetic push rod 21 will apply pressure to one end of the rotating assembly 3.

[0028] The rotating component 3 includes a support frame 34 fixedly mounted on the bottom surface of the protrusion of the inner cavity of the shell 11 and a pressure plate 31 rotatably mounted on the support frame 34. The pressure plate 31 and the electromagnetic push rod 21 are elastically connected by a first spring 32, and the pressure plate 31 and the conductive component 7 are elastically connected by a second spring 33. When the electrical circuit protection device is not stuck, the static touch plate 22 will apply pressure to one end of the pressure plate 31 during the process of sliding downward in the inner cavity of the electromagnetic push rod 21, so that the pressure plate 31 will apply pressure to the conductive component 7 and the heat-deformed metal plate 8, thereby disconnecting the conductive component 7 from the line to achieve a short-circuit effect.

[0029] The conductive component 7 includes a fixing frame 72 fixedly mounted on the inner cavity side wall of the shell 11 and a moving touch plate 71 rotatably mounted on the fixing frame 72. An L-shaped conductive sheet 73 is fixedly mounted on the bottom surface of the moving touch plate 71. The lower end of the L-shaped conductive sheet 73 is in contact with the top surface of the heat-deformed metal plate 8. When the pressing plate 31 rotates, it will apply pressure to the moving touch plate 71, so that the moving touch plate 71 starts to rotate on the fixing frame 72, thereby disconnecting the moving touch plate 71 from the circuit. Since the L-shaped conductive sheet 73 has deformation recovery ability, it will not hinder the moving touch plate 71 from rotating on the fixing frame 72. When the pressing plate 31 removes the pressure on the moving touch plate 71, the L-shaped conductive sheet 73 will automatically restore its original shape. At this time, the electrical circuit protection device is operating normally and is not stuck. Therefore, the heating component 10 does not heat the heat-deformed metal plate 8, and the heat-deformed metal plate 8 is subjected to the pressure applied by the L-shaped conductive sheet 73 and will not be deformed.

[0030] The stationary contact plate 22 comprises a plate body 221 fixedly mounted on the bottom surface of the electromagnetic push rod 21 , and a stationary contact point 222 is fixedly mounted at the lower edge of the triangular portion of the plate body 221 .

[0031] The control assembly 9 includes a mounting plate 91 fixedly mounted on the bottom surface of the recessed part of the inner cavity of the housing 11 and a processor 92 fixedly mounted on the top surface of the mounting plate 91. The processor 92 is set to coordinate the normal operation of various components. A temperature sensor 93 and a delay switch 94 are also fixedly mounted on the top surface of the mounting plate 91. The temperature sensor 93 is used to detect the temperature inside the electrical circuit protection device. When the temperature is greater than the threshold value set by the temperature sensor 93, the temperature sensor 93 transmits a signal to the processor 92. At this time, the processor 92 controls the delay switch 94 to operate. When the electrical circuit protection device is not When stuck, during normal operation, the electromagnetic push rod 21 applies pressure to one end of the pressure plate 31, causing the pressure plate 31 to rotate and trigger the sensing component 20. As long as the time for the pressure plate 31 to trigger the sensing component 20 is controlled within the time set by the delay switch 94, the processor 92 will not start the heating component 10 to heat the thermally deformed metal plate 8. On the contrary, when the time for the pressure plate 31 to trigger the sensing component 20 is greater than the time set in the delay switch 94, the processor 92 will start the heating component 10 to heat the thermally deformed metal plate 8. The thermally deformed metal plate 8 is bent by the heat, which is used to assist the electrical circuit protection device to achieve a circuit breaking effect.

[0032] The heating component 10 includes a battery pack 101 fixedly mounted on the bottom surface of the inner cavity recess of the shell 11, the electrodes of the battery pack 101 are electrically connected to a coil 102, and a heat-deformed metal plate 8 is arranged in the inner circle of the coil 102. The battery pack 101 supplies power to the coil 102, and under the action of electromagnetic induction, the heat-deformed metal plate 8 is heated, so that the heat-deformed metal plate 8 is bent by the heat.

[0033] The sensing component 20 includes a hollow cylinder 201 fixedly mounted on the bottom surface of the inner cavity protrusion of the shell 11 and a pressure sensor 202 fixedly mounted on the bottom surface of the inner cavity of the hollow cylinder 201. A slide plate 203 is slidably mounted in the inner cavity of the hollow cylinder 201. A limiting column 204 is fixedly mounted on the side wall of the pressure plate 31. The limiting column 204 and the slide plate 203 are movably connected via a connecting rod 205.

[0034] Specifically, when the temperature sensor 93 detects that the temperature inside the electrical circuit protection device is greater than the threshold value set by the temperature sensor 93, the temperature sensor 93 will transmit a signal to the processor 92. At this time, the processor 92 controls the delay switch 94 to start. When the electrical circuit protection device is not stuck and operates normally, the electromagnetic push rod 21 applies pressure to one end of the pressure plate 31, causing the pressure plate 31 to rotate. During the rotation, the pressure plate 31 drives the slide plate 203 to slide downward in the inner cavity of the hollow cylinder 201 through the limit column 204 and the connecting rod 205. When the slide plate 203 slides to a suitable position, it applies pressure to the pressure sensor 202 and triggers the pressure sensor 202. As long as the slide plate 203 triggers the pressure sensor When the time control of the device 202 is within the time set by the delay switch 94, the processor 92 will not enable the battery pack 101 to energize the coil 102, and will not heat the thermally deformed metal plate 8; on the contrary, when the time when the slide plate 203 triggers the pressure sensor 202 is greater than the time set in the delay switch 94, the processor 92 enables the battery pack 101 to energize the coil 102, generates electromagnetic heating, and heats the thermally deformed metal plate 8, so that the thermally deformed metal plate 8 is bent by the heat. Even if the magnetic push assembly 2, the rotating assembly 3, the lever 4 and the connecting ring 5 get stuck during operation, the thermally deformed metal plate 8 can still be heated by electromagnetic heating to assist in circuit breaking and reduce the probability of electrical accidents.

[0035] The heat-deformable metal plate 8 in the traditional electrical circuit protection device will only be deformed by heat when the load in the circuit is too large, and its application range is limited. Through the arrangement of the present invention, the heat-deformable metal plate 8 in the electrical circuit protection device can not only play a circuit-breaking role when the load is too large, but also play an auxiliary circuit-breaking role when the electrical circuit protection device is stuck. It not only plays a preventive role, but also widens the application range.

[0036] In order to solve the problem that the heat-deformed metal plate 8 is deformed by heat, so that the disconnection speed is not fast enough, resulting in a long arcing time and continuous damage to the circuit of the equipment, such as Figure 8 - Fig. 9 As shown: The separation assembly 30 includes a slide 301 fixedly mounted on the inner cavity side wall of the housing 11 and a push rod 302 inserted and slidably mounted in the inner cavity of the slide 301. The push rod 302 is elastically connected to the inner cavity wall of the slide 301 through a third spring 303. An electromagnet 304 is fixedly mounted on the inner cavity side wall of the slide 301. A permanent magnet 305 is fixedly mounted on the side wall of the push rod 302 at one end close to the slide 301. The electromagnet 304 and the permanent magnet 305 are coaxial. A base 306 is fixedly installed on the top surface of the moving touch panel 71, a slider 307 is horizontally penetrated and slidably installed on the base 306, and a pair of top columns 308 are vertically embedded and slidably installed on the base 306. The two top columns 308 are elastically connected to the base 306 respectively through a fourth spring 309, and the two top columns 308 are both penetrated and slidably installed on the slider 307, and the slider 307 and the side wall of the base 306 are elastically connected through a fifth spring 320.

[0037] The base 306 includes a base body 3061 fixedly mounted on the top surface of the moving touch plate 71, a pair of slide grooves 3062 are opened on the base body 3061, two top columns 308 are correspondingly embedded and slidably installed in the inner cavities of the two slide grooves 3062, and the top columns 308 are elastically connected to the ground of the inner cavity of the slide grooves 3062 through the fifth spring 320, and a conductive hole 3063 is opened on the top surface of the base body 3061, the conductive hole 3063 is in contact with the moving touch plate 71 for conduction, and the static contact 222 can be inserted into the inner cavity of the conductive hole 3063.

[0038] Specifically, when the electrical circuit is short-circuited and the electrical circuit protection device is stuck, the processor 92 enables the battery pack 101 to energize the coil 102, heat the thermally deformed metal plate 8, and bend the thermally deformed metal plate 8 to achieve the effect of disconnecting the electrical circuit. In this process, the processor 92 controls the battery pack 101 to energize the electromagnet 304, and there is a repulsive force between the electromagnet 304 and the permanent magnet 305. Under the action of the repulsive force, the push rod 302 will extend to the outside of the slide cylinder 301, and the push rod 302 will push the slider 307 on the base 30 6, since the two top pillars 308 are provided with inclined grooves, the slider 307 will generate a thrust on the inclined grooves on the top pillars 308 during the sliding process, so that the two top pillars 308 are pushed upward in the inner cavity of the slide groove 3062. During the upward pushing of the top pillars 308, pressure is applied to the lower edge of the triangular part of the plate body 221, and the speed of thermal deformation of the heat-deformed metal plate 8 is accelerated under the action of the reaction force, which is conducive to achieving a rapid circuit breaking effect, reducing the arcing time, and further reducing the damage caused by the arc to the line and equipment.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical circuit protection device, comprising a protective shell (1) and a magnetic push assembly (2) fixedly arranged in an inner cavity of the protective shell (1), a rotating assembly (3) rotatably installed in the inner cavity of the protective shell (1), the rotating assembly (3) being arranged directly below the magnetic push assembly (2), a lever (4) rotatably installed on the top surface of the inner cavity of the protective shell (1), the lever (4) being arranged directly above the rotating assembly (3), the lever (4) and the rotating assembly (3) being movably connected via a connecting ring (5), a metal arc extinguishing grid (6) being fixedly installed on the side wall of the inner cavity of the protective shell (1), characterized in that: A conductive component (7) and a heat-deformed metal plate (8) are fixedly mounted on the side wall of the protective shell (1); a control component (9) and a heating component (10) are fixedly mounted on the bottom surface of the recessed portion of the inner cavity of the protective shell (1), and the control component (9) and the heating component (10) are electrically connected via wires; a sensing component (20) is fixedly mounted on the bottom surface of the raised portion of the inner cavity of the protective shell (1), and the sensing component (20) is movably connected to the rotating component (3), and the sensing component (20) and the control component (9) are electrically connected via wires; a separation component (30) is fixedly mounted on the side wall of the inner cavity of the protective shell (1) and the top surface of the conductive component (7), and the separation component (30) and the control component (9) are electrically connected via wires.

2. An electrical circuit protection device according to claim 1, characterized in that: The protective shell (1) comprises a shell (11), a through slot (12) is provided on an outer wall of one side of the shell (11), and a pushing end of the lever (4) is rotatably disposed in an inner cavity of the through slot (12).

3. An electrical circuit protection device according to claim 2, characterized in that: The magnetic push assembly (2) comprises an electromagnetic push rod (21) fixedly mounted in the inner cavity of the housing (11), and a static touch plate (22) is fixedly mounted on the bottom surface of the electromagnetic push rod (21); The rotating assembly (3) comprises a support frame (34) fixedly mounted on the bottom surface of the protrusion of the inner cavity of the housing (11) and a pressure plate (31) rotatably mounted on the support frame (34); the pressure plate (31) and the electromagnetic push rod (21) are elastically connected via a first spring (32); and the pressure plate (31) and the conductive assembly (7) are elastically connected via a second spring (33).

4. An electrical circuit protection device according to claim 2, characterized in that: The conductive component (7) comprises a fixing frame (72) fixedly mounted on the inner cavity side wall of the housing (11) and a movable touch plate (71) rotatably mounted on the fixing frame (72); an L-shaped conductive sheet (73) is fixedly mounted on the bottom surface of the movable touch plate (71); and the lower end of the L-shaped conductive sheet (73) is in contact with the top surface of the thermally deformed metal plate (8).

5. An electrical circuit protection device according to claim 3, characterized in that: The static contact plate (22) comprises a plate body (221) fixedly mounted on the bottom surface of the electromagnetic push rod (21), and a static contact point (222) is fixedly mounted on the lower edge of the triangular portion of the plate body (221).

6. An electrical circuit protection device according to claim 2, characterized in that: The control assembly (9) comprises a mounting plate (91) fixedly mounted on the bottom surface of the inner cavity recess of the housing (11) and a processor (92) fixedly mounted on the top surface of the mounting plate (91). A temperature sensor (93) and a delay switch (94) are also fixedly mounted on the top surface of the mounting plate (91).

7. An electrical circuit protection device according to claim 2, characterized in that: The heating component (10) comprises a battery pack (101) fixedly mounted on the bottom surface of a recessed portion of an inner cavity of a housing (11); electrodes of the battery pack (101) are electrically connected to a coil (102); and a thermally deformed metal plate (8) is disposed in an inner circle of the coil (102).

8. An electrical circuit protection device according to claim 3, characterized in that: The sensing component (20) comprises a hollow cylinder (201) fixedly mounted on the bottom surface of the protrusion of the inner cavity of the housing (11) and a pressure sensor (202) fixedly mounted on the bottom surface of the inner cavity of the hollow cylinder (201); a slide plate (203) is slidably mounted in the inner cavity of the hollow cylinder (201); a limiting column (204) is fixedly mounted on the side wall of the pressure plate (31); and the limiting column (204) and the slide plate (203) are movably connected via a connecting rod (205).

9. An electrical circuit protection device according to claim 2, characterized in that: The separation assembly (30) comprises a slide cylinder (301) fixedly mounted on the inner cavity side wall of the housing (11) and a push rod (302) inserted and slidably mounted in the inner cavity of the slide cylinder (301); the push rod (302) and the inner cavity inner wall of the slide cylinder (301) are elastically connected via a third spring (303); an electromagnet (304) is fixedly mounted on the inner cavity side wall of the slide cylinder (301); a permanent magnet (305) is fixedly mounted on the side wall of one end of the push rod (302) close to the slide cylinder (301); the electromagnet (304) and the permanent magnet (305) are in the same direction. The axis is arranged, a base (306) is fixedly installed on the top surface of the moving touch plate (71), a slider (307) is horizontally penetrated and slidably installed on the base (306), and a pair of top columns (308) are vertically embedded and slidably installed on the base (306), the two top columns (308) and the base (306) are elastically connected respectively through a fourth spring (309), and the two top columns (308) are both penetrated and slidably installed on the slider (307), and the slider (307) and the side wall of the base (306) are elastically connected through a fifth spring (320).

10. An electrical circuit protection device according to claim 9, characterized in that: The base (306) comprises a base body (3061) fixedly mounted on the top surface of the moving touch plate (71); a pair of slide grooves (3062) are provided on the base body (3061); two top columns (308) are correspondingly embedded and slidably mounted in the inner cavities of the two slide grooves (3062); the top columns (308) are elastically connected to the ground of the inner cavity of the slide grooves (3062) via a fifth spring (320); a conductive hole (3063) is provided on the top surface of the base body (3061); the conductive hole (3063) contacts the moving touch plate (71) for electrical conduction; and the static contact point (222) can be inserted and arranged in the inner cavity of the conductive hole (3063).

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