A circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker comprising: a circuit breaker body; a switch rotatably disposed on one side of the circuit breaker body to control the opening and closing of a circuit; an automatic reset assembly comprising a gear mechanism and a one-way rotation mechanism, wherein the gear mechanism rotates in response to the switch and, when the gear mechanism is energized, drives the switch to rotate to a first direction; and the one-way rotation mechanism constrains the rotation direction of the gear mechanism. The beneficial effects of the present invention are that the device can automatically close the circuit breaker body after a fault is cleared, without the need for manual intervention, thereby improving the automation level and convenience of the device; by using the one-way rotation mechanism, it is ensured that when the switch is disconnected due to a fault, the rotation of the driven gear will not be interfered with by the worm gear, thereby ensuring the reliability of the device and avoiding unnecessary wear or damage.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, in particular to a circuit breaker. Background Art

[0002] A circuit breaker is an electrical device installed in a transmission line, substation, or part of an electrical circuit. It switches loads or protects electrical facilities and loads by disconnecting the circuit in the event of a short circuit or other fault. Among them, miniature circuit breakers (miniature distribution circuit breakers) are installed in small distribution boards that form low-voltage circuits (15-30A) of 110 / 220V AC. They are used for overcurrent and short-circuit protection and are also used as switches in distribution boards in homes, shopping malls, offices, and stores, enabling them to conveniently switch multiple loads on and off from a single location.

[0003] Although the circuit breaker of the prior art has good performance in controlling the on and off of the circuit, it still has many defects in the user experience. For example, whether the user manually turns the handle to switch the power control mechanism of the circuit breaker from the on state to the off state, or the power control mechanism of the circuit breaker is switched from the on state to the off state due to a circuit abnormality, it is necessary to manually turn the handle upward to switch the power control mechanism of the circuit breaker from the off state to the on state. This is especially in some usage environments, such as home decoration, where the circuit breaker is installed at a high position, which makes it more inconvenient for users of short stature to use. Summary of the Invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0005] The object of the present invention is to provide a circuit breaker.

[0006] Therefore, the object is to solve the problem that the circuit breaker is installed at a high position, which makes it more inconvenient for users with short stature to use it.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a circuit breaker, comprising a circuit breaker assembly, comprising a circuit breaker body, a switch rotatably arranged on one side of the circuit breaker body to control the opening and closing of a circuit; an automatic recovery assembly, comprising a gear mechanism and a one-way rotation mechanism, wherein the gear mechanism rotates following the rotation of the switch, and when the gear mechanism is energized, the gear mechanism drives the switch to rotate to a first direction; the one-way rotation mechanism constrains the rotation direction of the gear mechanism, and when the switch drives the gear mechanism to rotate to a second direction, the one-way rotation mechanism causes the gear mechanism to idle.

[0008] As a preferred solution of the circuit breaker of the present invention, the gear mechanism includes a concentric rotating shaft fixed to the switch axis, a sector gear is fixed to the outside of the concentric rotating shaft, a driven gear is engaged with one side of the sector gear, and a worm gear is coaxially arranged on the driven gear.

[0009] As a preferred solution of the circuit breaker of the present invention, a worm is engaged with the outer side of the worm wheel, one end of the worm is drivingly connected to a motor, and the motor is fixed to the circuit breaker body by bolts.

[0010] As a preferred solution of the circuit breaker of the present invention, the one-way rotation mechanism includes a first fixing ring and a second fixing ring, the first fixing ring is coaxially fixed to the driven gear, the second fixing ring is coaxially fixed to the worm gear, and the first fixing ring and the second fixing ring are arranged opposite to each other.

[0011] As a preferred embodiment of the circuit breaker of the present invention, a groove is formed at intervals between the opposing surfaces of the first fixing ring and the second fixing ring, a plurality of fixing cylinders are fixed to the opposing surface of the second fixing ring and the first fixing ring, a limit rod is provided on the fixing cylinder to extend toward one end of the first fixing ring, and a compression spring is fixed between the limit rod and the fixing cylinder;

[0012] Wherein, an inclined release is provided in the groove. When the groove is rotated toward a preset direction, the inclined release will squeeze the compression spring out of the groove, thereby realizing one-way rotation of the driven gear.

[0013] As a preferred solution of the circuit breaker of the present invention, the delayed starting component is used to control the power-on time of the motor, which includes a circuit disconnection mechanism and a delayed reset mechanism. When the power is off, the delayed reset mechanism delays sliding in the direction of the circuit disconnection mechanism until the delayed reset mechanism contacts the circuit disconnection mechanism to realize delayed power-on of the motor.

[0014] As a preferred embodiment of the circuit breaker of the present invention, the circuit disconnecting mechanism is fixed to a protective shell on the inner wall of the circuit breaker body, a first contact piece is fixed inside the protective shell, the output end of the first contact piece is connected to the motor via a wire, the input end of the first contact piece is connected to a battery via a wire, and the battery is detachably mounted on the circuit breaker body.

[0015] As a preferred solution of the circuit breaker of the present invention, the delayed reset mechanism includes a second contact piece slidingly arranged with the inner wall of the protective shell, a push spring is abutted between the second contact piece and the protective shell, a piston is fixed to the end of the second contact piece away from the first contact piece, and a cylinder for accommodating the sliding of the piston is provided inside the protective shell.

[0016] As a preferred solution of the circuit breaker of the present invention, a delay ring is fixed inside the cylinder, a plurality of connecting holes are opened on the surface of the delay ring, a cavity connected to the plurality of connecting holes is opened inside the delay ring, and the cylinder is filled with a medium.

[0017] As a preferred solution of the circuit breaker of the present invention, a control rod is rotatably provided on the outer side of the circuit breaker body, the control rod is threadedly connected to the cylinder, and the position of the cylinder is adjusted by rotating the control rod.

[0018] The beneficial effects of the circuit breaker of the present invention are as follows: the device can automatically close the circuit breaker body after the fault is cleared without manual intervention, thereby improving the automation level and convenience of the device; by using a one-way rotation mechanism, it is ensured that when the switch is disconnected due to a fault, the rotation of the driven gear will not be interfered with by the worm gear, thereby ensuring the reliability of the device and avoiding unnecessary wear or damage.

[0019] The time delay mechanism ensures that the circuit has sufficient cooling time and fault elimination time after a short circuit or other overload occurs, thereby preventing repeated restarts from causing further damage. The manual shutdown function allows users to choose manual control when they do not want the circuit breaker to automatically reset, increasing the flexibility and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the circuit breaker in the present invention.

[0022] Figure 2 It is a front view structural diagram of the circuit breaker in the present invention.

[0023] Figure 3 The figure is a schematic diagram of the exploded three-dimensional structure of the one-way rotation mechanism of the circuit breaker in the present invention.

[0024] Figure 4 It is a schematic diagram of the top view of the one-way rotation mechanism of the circuit breaker in the present invention.

[0025] Figure 5 This is a schematic cross-sectional perspective view of the delayed starting assembly of the circuit breaker in the present invention.

[0026] Figure 6 This is a schematic cross-sectional view of the delay ring structure of the circuit breaker in the present invention.

[0027] In the picture:

[0028] 100. Circuit breaker assembly; 101. Circuit breaker body; 102. Switch;

[0029] 200, automatic recovery assembly; 201, gear mechanism; 202, one-way rotation mechanism;

[0030] 201a, concentric shaft; 201b, sector gear; 201c, driven gear; 201d, worm gear; 201e, worm; 201f, motor;

[0031] 202a, first fixing ring; 202b, second fixing ring; 202c, groove; 202d, inclined release; 202e, fixing cylinder; 202f, limiting rod; 202g, compression spring;

[0032] 300, delayed start assembly; 301, circuit disconnection mechanism; 302, delayed reset mechanism; 303, control lever;

[0033] 301a, protective housing; 301b, first contact piece; 301c, battery;

[0034] 302a, second contact piece; 302b, push spring; 302c, piston; 302d, cylinder; 302e, delay ring; 302f, communicating hole; 302g, cavity. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0038] Example 1, with reference to Figure 1-2, which is the first embodiment of the present invention, provides a circuit breaker, a circuit breaker assembly 100, which includes a circuit breaker body 101, a switch 102 rotatably provided on the circuit breaker body 101 to control the opening and closing of the circuit; an automatic recovery assembly 200, which includes a gear mechanism 201 and a one-way rotation mechanism 202. The gear mechanism 201 rotates following the rotation of the switch 102. When the gear mechanism 201 is energized, the gear mechanism 201 drives the switch 102 to rotate to a first direction; the first direction can be the direction of driving the switch 102 to break the circuit, and the one-way rotation mechanism 202 constrains the rotation direction of the gear mechanism 201. When the switch 102 drives the gear mechanism 201 to rotate to a second direction, the second direction can be the direction of driving the switch 102 to resume conduction, and the one-way rotation mechanism 202 causes the gear mechanism 201 to idle.

[0039] The automatic reset assembly 200 allows the circuit breaker body 101 to be automatically reset under certain conditions. For example, after an overload or short circuit event causes the circuit breaker to trip, the circuit can be automatically reclosed once conditions return to normal, reducing the need for manual intervention.

[0040] When the switch is driven to a direction opposite to the preset restoration direction by external factors such as manual operation or other mechanical forces, the one-way rotation mechanism 202 will cause the gear mechanism 201 to idle, thereby avoiding unnecessary reverse stress on the gear mechanism 201 and extending the service life of the device.

[0041] Due to the existence of the automatic recovery component 200, power supply can be quickly restored after detecting that the fault has been eliminated, thereby improving the overall efficiency of the device, which is especially important for equipment that requires continuous power supply.

[0042] The automated process reduces the need for manual inspection and resetting of the circuit breaker body 101, thereby reducing maintenance costs and reducing problems caused by human error.

[0043] In critical applications such as data centers, medical equipment, or industrial control systems, automated circuit breaker restoration can ensure service is restored in the shortest possible time.

[0044] Example 2, reference Figure 2-4This is the second embodiment of the present invention. Unlike the previous embodiment, the gear mechanism 201 includes a coaxial rotating shaft 201a fixed to the axis of the switch 102. A sector gear 201b is fixed to the outside of the coaxial rotating shaft 201a. A driven gear 201c is meshed with one side of the sector gear 201b. A worm gear 201d is coaxially mounted on the driven gear 201c. A worm gear 201e is meshed with the outside of the worm gear 201d. One end of the worm gear 201e is drivingly connected to a motor 201f, which is secured to the circuit breaker body 101 via bolts. The one-way rotation mechanism 202 includes a first fixing ring 202a and a second fixing ring 202b. The first fixing ring 202a is coaxially fixed to the driven gear 201c, while the second fixing ring 202b is coaxially fixed to the worm gear 201d. The first fixing ring 202a and the second fixing ring 202b are positioned opposite each other. Grooves 202c are provided on the opposite surfaces of the first fixing ring 202a and the second fixing ring 202b, and multiple fixing cylinders 202e are fixed on the opposite surfaces of the second fixing ring 202b and the first fixing ring 202a. A limit rod 202f is provided to extend and retract the fixing cylinder 202e toward one end of the first fixing ring 202a, and a compression spring 202g is fixed between the limit rod 202f and the fixing cylinder 202e; wherein, an inclined release 202d is provided in the groove 202c, and when the groove 202c is rotated toward a preset direction, the inclined release 202d will squeeze the compression spring 202g out of the groove 202c, thereby realizing the unidirectional rotation of the driven gear 201c.

[0045] In this embodiment, when the circuit breaker body 101 is in a short circuit or other faults causing the switch 102 to be disconnected, Figure 2 As shown, when the switch 102 is disconnected, it drives the coaxially fixed concentric shaft 201a to rotate to a preset angle, for example, 50°-130°. When the concentric shaft 201a rotates, it drives the meshing driven gear 201c to rotate through the sector gear 201b. When the driven gear 201c rotates, it is prevented from driving the worm gear 201d to rotate through the one-way rotation mechanism 202. Since the worm gear 201d and the worm 201e are a worm gear structure, the worm gear 201d cannot drive the worm 201e to rotate. By limiting the rotation direction of the driven gear 201c, the driven gear 201c will not be interfered with by the worm gear 201d when it is driven to rotate by the switch 102, thereby ensuring the normal rotation of the components.

[0046] Motor 201f is powered by battery 301c and is therefore unaffected by a short circuit in circuit breaker body 101. When motor 201f is powered on, its output drives worm 201e to rotate, which in turn drives the meshing worm gear 201d to rotate. At this point, the rotation direction of worm gear 201d conforms to the limits of unidirectional rotation mechanism 202, so worm gear 201d drives driven gear 201c to rotate synchronously. Driven gear 201c drives concentric shaft 201a via meshing sector gear 201b, and concentric shaft 201a drives switch 102 to close, thereby restoring the conductive state.

[0047] The motor 201f can be a servo motor or a controller can be used to control the number of revolutions of the motor 201f so that the switch 102 is closed when the motor 201f rotates to a preset number of revolutions, thereby preventing damage to components caused by excessive revolutions.

[0048] In summary, the device can automatically close the circuit breaker body 101 after the fault is cleared without manual intervention, thereby improving the automation level and convenience of the device.

[0049] By using the one-way rotation mechanism 202, it is ensured that when the switch 102 is disconnected due to a fault, the rotation of the driven gear 201c will not be interfered by the worm gear 201d, which ensures the reliability of the device and avoids unnecessary wear or damage.

[0050] The motor 201f is powered by an independent battery 301c, thus ensuring the normal operation of the reset mechanism even if the main circuit fails.

[0051] By using a servo motor or a motor 201f with a controller, the number of rotations of the motor 201f can be precisely controlled to ensure that the circuit breaker body 101 is closed at the correct position, thereby preventing mechanical damage that may be caused by excessive rotation and helping to extend the service life of the equipment.

[0052] Automatic resetting reduces the need for manual on-site reset of the circuit breaker body 101 , thereby reducing maintenance costs and improving the overall efficiency of the device.

[0053] In addition, if Figure 3-4 As shown, when the driven gear 201c is driven by the switch 102 to rotate, the driven gear 201c synchronously drives the first fixing ring 202a to rotate. When the first fixing ring 202a rotates, the inclined release 202d will sequentially squeeze the limit rod 202f out of the groove 202c, so that no transmission occurs between the first fixing ring 202a and the second fixing ring 202b, thereby preventing the rotation of the driven gear 201c from being interfered with.

[0054] When the worm wheel 201d is driven by the worm 201e to rotate, the limit rod 202f will abut against the inner wall of the groove 202c to achieve power transmission, thereby driving the driven gear 201c to rotate synchronously through the first fixing ring 202a, automatically restoring the switch 102 to the on state, thereby solving the problem that the circuit breaker is installed in a high position, which makes it more difficult for short users to use it.

[0055] It should be noted that the limit rod 202f is arranged in conjunction with the compression spring 202g and the fixed tube 202e, so that the limit rod 202f can automatically contract when squeezed by the inclined release 202d, and when not squeezed, it can automatically offset against the groove 202c under the action of the elastic force of the compression spring 202g to realize power transmission.

[0056] Example 3, reference Figure 5-6 This is the third embodiment of the present invention, which further provides a circuit breaker. A delayed start assembly 300 is used to control the energization time of motor 201f. It includes a circuit disconnect mechanism 301 and a delayed reset mechanism 302. When power is off, the delayed reset mechanism 302 slides slowly toward the circuit disconnect mechanism 301 until the delayed reset mechanism 302 contacts the circuit disconnect mechanism 301, thereby delaying the energization of motor 201f. The circuit disconnect mechanism 301 is secured to a protective housing 301a fixed to the inner wall of the circuit breaker body 101. A first contact piece 301b is fixedly disposed within the protective housing 301a. The output end of the first contact piece 301b is connected to the motor 201f via a wire, while the input end of the first contact piece 301b is connected to a battery 301c via a wire. The battery 301c is detachably mounted on the circuit breaker body 101. The time-delay reset mechanism 302 includes a second contact piece 302a that slides against the inner wall of the protective housing 301a. A push spring 302b abuts the second contact piece 302a and the protective housing 301a. A piston 302c is fixed to the end of the second contact piece 302a away from the first contact piece 301b. A cylinder 302d is located within the protective housing 301a to accommodate the sliding movement of the piston 302c. A delay ring 302e is fixed within the cylinder 302d. The delay ring 302e has multiple connecting holes 302f formed on its surface and a cavity 302g defined within the delay ring 302e that communicates with the connecting holes 302f. The cylinder 302d is filled with a medium. A control lever 303 is rotatably mounted on the outside of the circuit breaker body 101 and is threadedly connected to the cylinder 302d. The position of the cylinder 302d can be adjusted by rotating the control lever 303.

[0057] In this embodiment, a delayed starting component 300 is added to delay the starting of the motor 201f. That is, when the circuit breaker body 101 is disconnected, the motor 201f is prevented from starting immediately to restore it to the on state, thereby preventing damage to the circuit equipment.

[0058] Specifically, when the circuit breaker body 101 is energized through the first contact piece 301b, the magnetic force generated by the first contact piece 301b overcomes the elastic force of the push spring 302b, causing the second contact piece 302a to move and separate from the first contact piece 301b. Simultaneously, the second contact piece 302a pushes the piston 302c when it moves, and the piston 302c squeezes the medium into the delay ring 302e. At this time, the motor 201f is in the circuit-breaking state. When the circuit breaker body 101 is de-energized, the push spring 302b pushes the second contact piece 302a to fit into the circuit disconnection mechanism 301, thereby achieving circuit connectivity and energizing the motor 201f.

[0059] Among them, when the second contact piece 302a is active, it will drive the piston 302c to move, and the medium in the delay ring 302e will slowly flow out through the connecting hole 302f. Under the action of pressure, the movement speed of the piston 302c is controlled, and then the connection speed between the second contact piece 302a and the protective shell 301a is controlled, thereby realizing the delayed start of the motor 201f. Among them, the delay speed can be changed by controlling the inner diameter of the connecting hole 302f.

[0060] It should be noted that when the circuit breaker body 101 does not need to be automatically turned on, the user can rotate the control rod 303, and the control rod 303 drives the cylinder 302d to move away from the first contact piece 301b through the thread, thereby increasing the distance between the first contact piece 301b and the second contact piece 302a, making it impossible for the two to fit together, thereby achieving manual closing; the medium is preferably a viscous solution.

[0061] In addition, the first contact piece 301b is composed of an electromagnet insulating layer and a metal connecting piece, so when the first contact piece 301b is energized, it can exert a magnetic repulsive force on the second contact piece 302a.

[0062] In summary, the delay mechanism can ensure that the circuit has sufficient cooling time and fault elimination time after a short circuit or other overload occurs, thereby preventing repeated startup and causing further damage.

[0063] Delayed start can avoid unnecessary restarts due to momentary current fluctuations, which helps reduce the possibility of false operation.

[0064] The manual shutdown function allows users to choose manual control when they do not want the circuit breaker to automatically reset, increasing the flexibility and reliability of the device.

[0065] In some cases, immediately resetting the circuit breaker body 101 may lead to a dangerous situation, such as under a sustained overload condition. The delayed start mechanism can give more time to identify and resolve potential problems, thereby improving overall safety.

[0066] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0067] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0068] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A circuit breaker, characterized in that: include, A circuit breaker assembly (100) comprising a circuit breaker body (101), and a switch (102) rotatably arranged on one side of the circuit breaker body (101) to control the opening and closing of a circuit; An automatic recovery component (200) comprises a gear mechanism (201) and a one-way rotation mechanism (202), wherein the gear mechanism (201) rotates following the rotation of the switch (102), and when the gear mechanism (201) is energized, the gear mechanism (201) drives the switch (102) to rotate to a first direction; The one-way rotation mechanism (202) constrains the rotation direction of the gear mechanism (201); when the switch (102) drives the gear mechanism (201) to rotate to a second direction, the one-way rotation mechanism (202) causes the gear mechanism (201) to idle; The gear mechanism (201) comprises a coaxial rotating shaft (201a) fixed to the axis of the switch (102); a sector gear (201b) is fixed to the outside of the coaxial rotating shaft (201a); a driven gear (201c) is meshed with one side of the sector gear (201b); and a worm gear (201d) is coaxially arranged on the driven gear (201c); The one-way rotation mechanism (202) comprises a first fixing ring (202a) and a second fixing ring (202b), wherein the first fixing ring (202a) is coaxially fixed to the driven gear (201c), and the second fixing ring (202b) is coaxially fixed to the worm gear (201d), and the first fixing ring (202a) and the second fixing ring (202b) are arranged relative to each other; A groove (202c) is provided at intervals on the opposing surfaces of the first fixing ring (202a) and the second fixing ring (202b); a plurality of fixing cylinders (202e) are fixed on the opposing surfaces of the second fixing ring (202b) and the first fixing ring (202a); a limiting rod (202f) is provided on the fixing cylinder (202e) to be telescopically extended toward one end of the first fixing ring (202a); a compression spring (202g) is fixed between the limiting rod (202f) and the fixing cylinder (202e); An inclined release opening (202d) is provided in the groove (202c); when the groove (202c) is rotated toward a preset direction, the inclined release opening (202d) squeezes the compression spring (202g) out of the groove (202c), thereby achieving unidirectional rotation of the driven gear (201c); The delayed starting component (300) is used to control the power-on time of the motor (201f), and comprises a circuit disconnection mechanism (301) and a delayed reset mechanism (302). When the power is off, the delayed reset mechanism (302) slides in the direction of the circuit disconnection mechanism (301) with a delay until the delayed reset mechanism (302) contacts the circuit disconnection mechanism (301), thereby achieving delayed power-on of the motor (201f).

2. The circuit breaker according to claim 1, wherein: A worm (201e) is meshed with the outside of the worm wheel (201d), one end of the worm (201e) is transmission-connected to a motor (201f), and the motor (201f) is fixed to the circuit breaker body (101) via bolts.

3. The circuit breaker according to claim 2, wherein: The circuit disconnect mechanism (301) is fixed to a protective housing (301a) on the inner wall of the circuit breaker body (101); a first contact piece (301b) is fixedly provided inside the protective housing (301a); an output end of the first contact piece (301b) is connected to a motor (201f) via a wire; an input end of the first contact piece (301b) is connected to a battery (301c) via a wire; and the battery (301c) is detachably mounted on the circuit breaker body (101).

4. The circuit breaker according to claim 3, wherein: The delayed reset mechanism (302) comprises a second contact piece (302a) slidingly arranged with the inner wall of the protective shell (301a); a push spring (302b) is abutted between the second contact piece (302a) and the protective shell (301a); a piston (302c) is fixed to one end of the second contact piece (302a) away from the first contact piece (301b); and a cylinder (302d) for accommodating the sliding of the piston (302c) is provided inside the protective shell (301a).

5. The circuit breaker according to claim 4, wherein: A time delay ring (302e) is fixed inside the cylinder (302d), a plurality of communication holes (302f) are provided on the surface of the time delay ring (302e), a cavity (302g) connected to the plurality of communication holes (302f) is provided inside the time delay ring (302e), and the cylinder (302d) is filled with a medium.

6. The circuit breaker according to claim 5, wherein: A control rod (303) is rotatably provided on the outside of the circuit breaker body (101); the control rod (303) is threadedly connected to the cylinder (302d); and the position of the cylinder (302d) is adjusted by rotating the control rod (303).

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