circuit breaker

Abstract

This utility model discloses a circuit breaker, comprising a moving contact, a stationary contact, an operating mechanism, a rotating shaft, a traction rod, and a push rod. The traction rod is rotatably connected to the operating mechanism, and the push rod is rotatably and slidably connected to the rotating shaft. The moving contact is rotatably connected to the rotating shaft and has a coupled state and an electro-repulsive state. In the coupled state, the moving contact and the stationary contact are coupled to each other. In the electro-repulsive state, the moving contact and the stationary contact are disconnected. The oscillation of the moving contact acts on one end of the push rod, driving the push rod to move. This causes the other end of the push rod to act on the traction rod, driving the traction rod to rotate, thereby releasing the operating mechanism. The push rod can rotate and slide on the rotating shaft, allowing for rapid movement of the push rod to achieve rapid tripping of the circuit breaker. The push rod has high stability during movement on the rotating shaft, facilitating its installation on the rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a circuit breaker. Background Technology

[0002] In existing low-voltage molded case circuit breakers with current-limiting functions, a large amount of gas and an electric arc are generated in the cavity within a short time when a short circuit occurs. Under the action of electro-repulsive force, the separation distance between the moving and stationary contacts increases, and the electro-repulsive force decreases. When the electro-repulsive force is less than the reaction force of the contact spring, the moving contact, influenced by the spring force, begins to move closer to the stationary contact. This phenomenon is known in the industry as "contact drop-off," which can damage the contact system of the circuit breaker and thus affect its breaking capacity. In small-capacity circuit breakers, a rapid electromagnet action is generally used to unlock the operating mechanism. During a short circuit, the circuit breaker operating mechanism moves quickly to separate the moving and stationary contacts, thus preventing the "contact drop-off" phenomenon from repelling the repelled contacts. However, in large-capacity circuit breakers, due to space constraints and limitations on the size of the electromagnet, the electromagnet is prone to saturation, which affects the operating speed of the circuit breaker operating mechanism, causing the "contact drop-off" phenomenon to recur. Therefore, high-capacity circuit breakers require a tripping device that can accurately and quickly unlock the moving contacts after they are separated by electric repulsion. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of poor breaking capacity of existing circuit breakers and to provide a circuit breaker.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A circuit breaker includes a moving contact, a stationary contact, an operating mechanism, a rotating shaft, a traction rod, and a push rod. The traction rod is rotatably connected to the operating mechanism, the push rod is rotatably and slidably connected to the rotating shaft, and the moving contact is rotatably connected to the rotating shaft and has a coupling state and an electro-repulsive state.

[0006] In the coupled state, the moving contact and the stationary contact are coupled to each other;

[0007] In the state of electric repulsion, the moving contact is disconnected from the stationary contact. The moving contact swings and acts on one end of the push rod, driving the push rod to move. This causes the other end of the push rod to act on the traction rod and drive the traction rod to rotate, thereby unlocking the operating mechanism.

[0008] In this design, the aforementioned structure allows the rotation of the moving contact to act on one end of the push rod, causing the push rod to move on the rotating shaft. The push rod can rotate and slide on the shaft, enabling rapid movement and disengagement of the operating mechanism, thus achieving rapid tripping of the circuit breaker. Furthermore, the push rod exhibits high stability during its movement on the rotating shaft and is easy to install on the shaft.

[0009] Preferably, the rotating shaft has a sliding groove, the push rod includes a straight rod and a boss, the straight rod includes a hook portion, a movable portion and a mounting portion connected sequentially from top to bottom, the boss is connected to the movable portion and extends outward, the boss is rotatably and slidably connected in the sliding groove, the moving contact is used to act on the mounting portion, and the hook portion is used to act on the traction rod and drive the traction rod to rotate.

[0010] In this design, the aforementioned structure is used. The push rod is inserted into the sliding groove via a boss, allowing it to rotate on the shaft and move within the sliding groove. This results in greater stability and reliability during operation. Furthermore, installation is simple, requiring only the boss to be inserted into the sliding groove. The design is convenient and the structure is straightforward.

[0011] Preferably, the rotating shaft also has a guide groove, both the guide groove and the sliding groove are recessed inward from the outer surface of the rotating shaft, and the sliding groove is located on the side wall of the guide groove, with the straight rod extending into the guide groove.

[0012] In this design, the aforementioned structural form provides a limiting function, ensuring the straight rod on the push rod is positioned within the guide groove and can move or swing within it. This effectively prevents the push rod from shifting or misaligning during use, significantly improving the stability and reliability of the circuit breaker. Furthermore, the design is simple, easy to manufacture, and convenient to assemble.

[0013] Preferably, the straight rod has a first actuating surface and a second actuating surface, the first actuating surface being located between the hook portion and the movable portion, and the second actuating surface being located between the movable portion and the mounting portion;

[0014] In the coupled state, the second actuating surface is in contact with and abuts against the rotating shaft;

[0015] In the state of electric repulsion, the second actuating surface rotates in a direction away from the rotating shaft until the first actuating surface comes into contact with and abuts against the rotating shaft.

[0016] In this solution, the above-mentioned structure is adopted, and the push rod is stably attached to the rotating shaft through the first actuation surface or the second actuation surface without any shaking or misalignment. At the same time, it ensures that the push rod can rotate precisely into place when switching states, which greatly improves the stability of the circuit breaker.

[0017] Preferably, the rotating shaft has a third actuating surface and a fourth actuating surface to restrict the rotation of the push rod, and the third actuating surface is located above the fourth actuating surface;

[0018] In the coupled state, the fourth actuating surface abuts against the push rod;

[0019] In the state of electric repulsion, the push rod rotates in a direction away from the fourth actuation surface until the push rod comes into contact with and abuts against the third actuation surface.

[0020] In this solution, the above-mentioned structure is adopted. The rotating shaft is in close contact with the push rod through the third or fourth actuation surface, which makes the contact area large. This ensures that the push rod can rotate accurately into place without shaking or misalignment when switching states, which greatly improves the stability of the circuit breaker.

[0021] Preferably, the push rod is directly and rotatably connected to the moving contact, so that when the moving contact drives the push rod to swing, it drives the push rod to move within the rotating shaft.

[0022] In this design, the aforementioned structure allows the moving contact to open, directly rotating the push rod and moving it within the sliding groove. This disengages the operating mechanism, enabling rapid tripping and improving the circuit breaker's breaking capacity and safety stability. Furthermore, the overall structure is simple and easy to assemble.

[0023] Preferably, the moving contact has a connecting hole at one end facing the push rod, and the push rod is connected to and can rotate within the connecting hole.

[0024] In this solution, the above-mentioned structure is adopted, and the push rod can rotate within the connecting hole. The structure is simple and easy to install.

[0025] Preferably, the circuit breaker further includes a push rod elastic element, the two ends of which are respectively connected to the moving contact and the push rod.

[0026] In this solution, the aforementioned structural form is adopted. The push rod elastic element serves to buffer, dampen vibrations, and absorb energy. During the switching process between the coupling state and the electric repulsion state of the moving contact, the push rod elastic element enables the push rod to move rapidly. This allows the moving contact to drive the push rod to move rapidly during coupling or disconnection, thereby causing the operating mechanism to trip and unlock, achieving the rapid tripping action of the circuit breaker. Simultaneously, the push rod elastic element provides a certain preload to the push rod, thereby improving connection strength and stability.

[0027] Preferably, the push rod elastic element is a spring;

[0028] And / or, the moving contact has a connecting hole at one end facing the push rod, the push rod has a mounting hole at one end facing the moving contact, and the two ends of the push rod elastic element are respectively hooked to the connecting hole and the mounting hole.

[0029] In this solution, the above-mentioned structural form is adopted, which makes the push rod elastic element highly elastic, has good performance, and can easily return to its original shape after the external force is removed.

[0030] In addition, the two ends of the push rod elastic element are respectively hooked to the connecting round hole and the mounting round hole, which makes the push rod elastic element easy to install and connect, and the structure is simple.

[0031] Preferably, the moving contact has a mounting groove at one end facing the push rod, one end of the push rod extends into the mounting groove, and the mounting groove has a first abutting portion and a second abutting portion on opposite sides;

[0032] In the coupled state, the first abutting portion abuts against the push rod, so that there is a gap between the push rod and the traction rod;

[0033] In the state of electric repulsion, the first abutting part moves away from the push rod, and the second abutting part moves towards the push rod and abuts against the push rod to drive the push rod to rotate and act on the traction rod.

[0034] In this solution, the aforementioned structural form is adopted. The first and second abutting parts on opposite sides of the mounting slot abut against the push rod, driving its movement and thus achieving switching between different states. No interference occurs during use, ensuring high stability. Furthermore, it enables rapid tripping, improving the circuit breaker's breaking capacity and ensuring high safety and stability. Simultaneously, the overall structure is simple and easy to assemble.

[0035] Preferably, the moving contact includes a contact portion, a rotating portion, and a connecting portion for acting on the push rod, which are connected sequentially along its length. The rotating portion is rotatably connected to the rotating shaft, and the contact portion is coupled to the stationary contact.

[0036] In this solution, the aforementioned structural form is adopted. Under the state of electric repulsion, the contact part and the connecting part swing, causing the push rod to rotate and abut against the traction rod, thereby realizing the release of the operating mechanism. At the same time, the overall structure of the moving contact is simple and easy to assemble.

[0037] Preferably, the circuit breaker further includes a contact spring, and the moving contact further includes a convex bulge located between the rotating portion and the contact portion and extending downward. The contact spring is connected to the convex bulge and applies a force to the moving contact close to the stationary contact.

[0038] In this design, the aforementioned structural form ensures that the contact portion on the moving contact always maintains a downward force under the action of the contact spring, guaranteeing closed contact between the contact portion and the stationary contact. Furthermore, the structure is simple and easy to assemble.

[0039] Preferably, the contact portion includes a contact seat and a contact point, the contact seat is connected to the rotating portion, the contact point is abutted against the bottom of the contact seat, and the bottom of the contact seat has an inwardly recessed semi-circular recess.

[0040] In this solution, the above-mentioned structural form is adopted. The semi-circular recess can effectively prevent the solder from overflowing onto the contact part during welding, thus preventing the contact part surface from becoming uneven.

[0041] Preferably, the operating mechanism includes a handle, a rocker arm, a jump buckle, a locking buckle, a re-lock, a main spring, and two side plates, with the two side plates spaced apart. The rocker arm, the jump buckle, the locking buckle, the re-lock, and the main spring are all located between the two side plates. The handle is connected to the top of the rocker arm, and the main spring is connected to the bottom of the rocker arm. Both ends of the rocker arm are respectively connected to the two side plates and can rotate relative to the two side plates. The locking buckle and the traction rod are rotatably connected to the two side plates. The jump buckle... One end of the latch is rotatably connected to the two side plates, the rocker arm abuts against the other end of the latch, and the other end of the latch is locked to the lock. The latch includes a first hinge part, a fastening part and a swinging part connected sequentially from top to bottom. The first hinge part is rotatably connected to the two side plates, the fastening part is connected to the lock, and the swinging part abuts against the traction rod. The rotation of the traction rod will drive the swinging part to swing and drive the lock to rotate, so as to unlock the lock from the latch.

[0042] In this solution, the aforementioned structure is adopted, where the moving contact separates from the stationary contact and drives the push rod to move. This causes the push rod to drive the traction rod to rotate, thereby causing the traction rod to disengage from the swinging part of the re-clamp and driving the re-clamp to rotate and swing. The re-clamp, through the locking part, drives the latch to rotate and unlocks from the trip latch, thus enabling the operating mechanism to disengage and unlock, achieving the circuit breaker's rapid tripping action. Simultaneously, the overall structure is well-coordinated and highly stable.

[0043] Preferably, the jump buckle includes a second hinge portion, a mating portion, and a locking portion connected sequentially in a horizontal direction. The second hinge portion is rotatably connected to the two side plates. The operating mechanism further includes an upper connecting rod and a lower connecting rod. The upper connecting rod is connected to the lower connecting rod and located above the lower connecting rod, and the upper connecting rod is connected to the mating portion. The rocker arm abuts against the locking portion and drives the locking portion to swing downward so that the locking portion locks with the locking buckle, and drives the upper connecting rod and the lower connecting rod to rotate the rotating shaft.

[0044] In this scheme, the above-mentioned structural form is adopted. The upper and lower connecting rods have a transmission function. When the circuit is closed, the trip button applies a downward force to the upper connecting rod through the mating part, and drives the lower connecting rod to move and the rotating shaft to rotate, so that the rotating shaft returns to the coupling state, and the moving contact and the stationary contact come into contact and couple with each other.

[0045] Preferably, the rotating shaft has a limiting surface. In the coupling state, the limiting surface is located below the moving contact. In the electric repulsion state, the rotation of the rotating shaft will cause the limiting surface to move upward and abut against the moving contact, so as to prevent the moving contact from rotating downward and contacting the stationary contact.

[0046] In this solution, the above-mentioned structural form is adopted, and the limiting surface plays a restrictive role on the moving contact, effectively preventing the moving contact from falling back, thereby greatly improving the safety and stability of the circuit breaker.

[0047] Preferably, the circuit breaker further includes a base and a drawer-type terminal block, the stationary contact is disposed on the base, the rotating shaft is rotatably connected to the base, the base has a receiving cavity for installing the drawer-type terminal block, the receiving cavity is recessed inward in the horizontal direction from the side of the base, and the drawer-type terminal block is inserted into the receiving cavity in the horizontal direction and connected to the base.

[0048] In this solution, the above-mentioned structural form is adopted. The drawer-type terminal block is connected to the receiving cavity of the base by a horizontal pull-out method, which makes the installation of the drawer-type terminal block very convenient.

[0049] Preferably, the drawer-type terminal block includes a receiving portion, a base plate, a side panel, and a snap-fit ​​portion. The receiving portion is connected to the base plate and extends into the receiving cavity. The snap-fit ​​portion is connected to one end of the base plate near the base. The side panel is connected to the other end of the base plate away from the base and extends upward, and the snap-fit ​​portion is snapped into the base. The side panel abuts against the side of the base.

[0050] In this solution, the above-mentioned structural form is adopted. The snap-fit ​​part is connected to the base, and the side panel fits against the side of the base, thereby realizing the installation and connection of the drawer-type terminal block on the base, which is stable and reliable. The side panel protrudes upward and has a protective function, which ensures high safety and stability. At the same time, it is easy to disassemble and has a simple structure.

[0051] Preferably, the inner walls of the opposite sides of the receiving cavity have slots extending in a horizontal direction, and the receiving portion has an outwardly protruding latching portion, which moves in a horizontal direction into the slot.

[0052] In this solution, the above-mentioned structural form is adopted, and the latches on both sides of the receiving part move and connect to the two slots respectively, so that the drawer-type terminal block can only move horizontally in the receiving cavity and cannot be offset in other directions, which further improves the stability and reliability of the connection between the drawer-type terminal block and the base.

[0053] Preferably, the circuit breaker further includes an indicating component, the bottom of which abuts against the rotating shaft, and the rotating shaft acts on the indicating component and drives the rotation of the indicating component.

[0054] In this solution, the above-mentioned structure is adopted. The indicating component has an indicating function. The rotation of the shaft will drive the indicating component to rotate, so that the operator can clearly know whether the circuit breaker is open or closed.

[0055] Preferably, the indicating component includes a mounting bracket, an indicating element, and a reset element. The mounting bracket is connected to the side of the operating mechanism. The indicating element includes an indicating mark, a rotating part, and a supporting part connected sequentially from top to bottom. The rotating part is rotatably connected to the mounting bracket. The supporting part abuts against the rotating shaft. The reset element is mounted on the mounting bracket and abuts against the indicating element.

[0056] In this solution, the aforementioned structural form is adopted. The rotation of the shaft acts on the abutment, thereby causing the abutment and the indicator to swing, making the corresponding markings on the indicator visible to the operator through the transparent sheet. The reset component has a reset function, which drives the swing of the indicator. At the same time, the overall structure of the indicating component is simple and easy to use.

[0057] Preferably, the circuit breaker further includes a middle cover and a baffle, the operating mechanism is disposed on the middle cover, and the baffle is slidably connected to the middle cover. In the state of electric repulsion, the moving contact rotates upward and abuts against the baffle, so that the baffle rotates synchronously with the moving contact.

[0058] In this design, the aforementioned structural form is adopted. The baffle has a blocking function, preventing gas and metal particles from being ejected back during disconnection, thus ensuring high safety and stability, and facilitating the entry of the arc into the arc-extinguishing chamber. Simultaneously, it limits the movement of the moving contact by abutting against it, thereby restricting further upward rotation and improving safety and stability.

[0059] Preferably, the circuit breaker further includes a flux trip unit, which is vertically disposed on the middle cover. The bottom of the flux trip unit acts on the traction rod and drives the traction rod to rotate, thereby releasing the operating mechanism.

[0060] In this design, the aforementioned structural form allows the magnetic flux trip unit to abut against and drive the traction rod in the event of a power outage, thus tripping the operating mechanism and tripping the circuit breaker. This ensures high safety and stability. Furthermore, the magnetic flux trip unit enables remote operation and control, facilitating operation. The magnetic flux trip unit is vertically mounted on the center cover, making full use of the circuit breaker's internal space and resulting in a more compact structure.

[0061] Preferably, the magnetic flux release device includes a push rod, an elastic element, a bracket, and an electromagnetic unit disposed on the bracket. The bracket is mounted on the middle cover. The top of the push rod is connected to the electromagnetic unit, and the bottom of the push rod acts on the traction rod. The elastic element presses against the push rod and the electromagnetic unit and applies an upward force to the push rod.

[0062] In this solution, the aforementioned structure is adopted. When a line abnormality occurs, the coil of the electromagnetic unit generates an induced magnetic field, causing the moving iron core of the electromagnetic unit to actuate and push the push rod upward. Simultaneously, with the cooperation of the elastic element, the push rod moves upward under the elastic action of the elastic element and abuts against the traction rod, causing the operating mechanism to trip, thereby realizing the circuit breaker's tripping action. This ensures high safety and stability. Furthermore, the overall structure is simple.

[0063] Preferably, the stationary contact includes a conductive element, an arc-inducing plate, and a reflector. The conductive element includes a conductive mounting portion and a bending portion. One end of the bending portion is connected to the end of the conductive mounting portion near the moving contact, and the other end of the bending portion is bent upwards and in a direction away from the moving contact. The top of the bending portion has a stationary contact point that contacts the moving contact. The arc-inducing plate is connected to the end of the bending portion away from the moving contact. The two ends of the reflector are respectively connected to the arc-inducing plate and the conductive mounting portion.

[0064] In this solution, the above-mentioned structural form is adopted. The reflector is used to install and connect the arc-starting plate, which effectively prevents the arc-starting plate from shifting upward, thereby effectively isolating the arc between the arc-starting plate and the arc-extinguishing chamber and protecting the arc-starting plate. At the same time, it effectively prevents breakdown between the stationary contact and the arc-extinguishing chamber, protects the arc-starting angle and the stationary contact from arc burning, and generates gas at high temperatures, which is conducive to the upward climbing of the arc, resulting in high safety and stability.

[0065] Preferably, the reflector includes a connecting portion and a wrapping portion that are connected to each other. The connecting portion is connected to the conductive mounting portion, and the bottom of the wrapping portion has a receiving groove. The arc-guiding plate extends from bottom to top into the receiving groove.

[0066] In this design, the aforementioned structure is used, with the arc-initiating plate extending upwards into the receiving groove of the encapsulation portion. This prevents the arc-initiating plate from tilting upwards due to the generated gas, ensuring high safety and stability. Furthermore, the overall structure is simple and easy to use.

[0067] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0068] The positive and progressive effects of this utility model are as follows:

[0069] In this invention, when the moving contact separates from the stationary contact due to electric repulsion, the swinging motion of the moving contact acts on one end of the push rod, causing the push rod to move on the rotating shaft. During the movement, the other end of the push rod drives the traction rod to release the operating mechanism. The push rod can rotate and slide on the rotating shaft, enabling rapid movement of the push rod to achieve rapid tripping of the circuit breaker. At the same time, the push rod has high stability during movement on the rotating shaft and is easy to install on the rotating shaft. Attached Figure Description

[0070] Figure 1 This is a partial three-dimensional structural diagram of the circuit breaker according to Embodiment 1 of this utility model, in which the outer casing is omitted.

[0071] Figure 2 This is a schematic diagram of the internal structure of the circuit breaker in Embodiment 1 of this utility model.

[0072] Figure 3 This is a partial structural schematic diagram of the circuit breaker in Embodiment 1 of this utility model.

[0073] Figure 4 This is a schematic diagram of the push rod structure of Embodiment 1 of this utility model.

[0074] Figure 5 This is a schematic diagram of the structure of the rotating shaft in Embodiment 1 of this utility model.

[0075] Figure 6This is a schematic diagram of the internal structure of the rotating shaft in Embodiment 1 of this utility model.

[0076] Figure 7 This is a schematic diagram of the moving contact of Embodiment 1 of this utility model.

[0077] Figure 8 This is a schematic diagram of the stationary contact, moving contact, and rotating shaft of Embodiment 1 of this utility model.

[0078] Figure 9 This is a three-dimensional structural diagram of the stationary contact and the moving contact of Embodiment 1 of this utility model.

[0079] Figure 10 This is a partial structural diagram of the stationary contact of Embodiment 1 of this utility model, in which the arc-starting plate is omitted.

[0080] Figure 11 This is a bottom view of the base structure of Embodiment 1 of this utility model.

[0081] Figure 12 This is a schematic diagram of the drawer-type terminal block of Embodiment 1 of this utility model.

[0082] Figure 13 This is a schematic diagram of the drawer-type terminal block from another perspective of Embodiment 1 of this utility model.

[0083] Figure 14 This is a partial structural diagram of the circuit breaker according to Embodiment 1 of this utility model, in which the middle cover is omitted.

[0084] Figure 15 This is a partially enlarged schematic diagram of the operating mechanism of Embodiment 1 of this utility model, in which the handle is omitted.

[0085] Figure 16 This is a partial structural diagram of the jump buckle in Embodiment 1 of this utility model.

[0086] Figure 17 This is a schematic diagram of the re-fastening structure of Embodiment 1 of this utility model.

[0087] Figure 18 This is a schematic diagram of the internal structure of the middle cover, baffle and moving contact in Embodiment 1 of this utility model.

[0088] Figure 19 This is a schematic diagram of the internal structure of the middle cover, baffle and moving contact of Embodiment 1 of this utility model from another perspective.

[0089] Figure 20 This is a schematic diagram of the circuit breaker in Embodiment 2 of this utility model.

[0090] Figure 21This is a schematic diagram of the internal structure of the circuit breaker in Embodiment 2 of this utility model.

[0091] Figure 22 This is a partial structural schematic diagram of the circuit breaker in Embodiment 2 of this utility model.

[0092] Figure 23 This is a schematic diagram of the circuit breaker of Embodiment 2 of this utility model from another perspective.

[0093] Figure 24 This is a schematic diagram of the structure of the indicator component in Embodiment 2 of this utility model.

[0094] Figure 25 This is a partial structural diagram of the magnetic flux trip device according to Embodiment 2 of this utility model, in which the magnetic flux trip device housing is omitted.

[0095] Figure 26 This is a schematic diagram of the structure of the grid sheet in Embodiment 2 of this utility model.

[0096] Figure 27 This is a schematic diagram of the stationary contact, moving contact, and rotating shaft of Embodiment 2 of this utility model.

[0097] Figure 28 This is a schematic diagram of the current transformer, conductive plate and wiring terminals of Embodiment 2 of this utility model, in which the current transformer housing is omitted.

[0098] Figure 29 This is a schematic diagram of the shunt trip unit of Embodiment 2 of this utility model, in which the shunt trip unit housing is omitted.

[0099] Figure 30 This is a partial internal structure diagram of the circuit breaker in Embodiment 3 of this utility model.

[0100] Figure 31 This is a partially enlarged schematic diagram of the circuit breaker in Embodiment 3 of this utility model.

[0101] Explanation of reference numerals in the attached figures:

[0102] Stationary contact 1, conductive component 111, conductive mounting part 1111, bending part 1112, arc-starting plate 112, reflector 113, connecting part 1131, wrapping part 1132, receiving groove 1133, plastic pad 114, moving contact 2, contact part 21, contact seat 211, contact point 212, semi-circular recess 213, rotating part 22, connecting part 23, protrusion 24, connecting round hole 25, mounting groove 26, first abutting part 261, second abutting part 262, rotating shaft 3, sliding groove 31, guide groove 32 Third actuating surface 33, fourth actuating surface 34, limiting surface 35, push rod 4, straight rod 41, hook part 411, movable part 412, mounting part 413, first actuating surface 414, second actuating surface 415, boss 42, mounting hole 43, traction rod 5, operating mechanism 6, side plate 61, rocker arm 62, handle 63, jump buckle 64, second hinge part 641, mating part 642, locking part 643, locking groove 6431, sliding surface 6432, locking 65, re-locking 66, first hinge part 661, fastening part 66 2. Swinging part 663, main spring 67, upper connecting rod 68, push rod elastic element 7, contact spring 8, base 9, receiving cavity 91, slot 92, snap-fit ​​slot 93, drawer-type terminal block 10, receiving part 101, snap-fit ​​part 1011, bottom plate 102, side panel 103, snap-fit ​​part 104, middle cover 11, baffle 115, slide groove 116, outer shell 12, transparent sheet 121, indicating component 13, indicating element 131, indicating mark 1311, rotating part 1312, abutting part 1313, mounting bracket 132, reset Component 133, Magnetic flux trip unit 14, Push rod 141, Electromagnetic unit 142, Elastic component 143, Bracket 144, Arc extinguishing chamber 15, Housing 151, Grid plate 152, Protrusion 1521, Recess 1522, Current transformer 16, Current transformer housing 161, Magnetic circuit 162, Terminal block 17, Conductive plate 18, Shunt trip unit 19, Shunt trip unit housing 191, Static iron core 192, Moving iron core 193, Push rod 194, Spring 195, Circuit board 196, Limiting component 197, Undervoltage trip unit 20. Detailed Implementation

[0103] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the following embodiments.

[0104] Example 1

[0105] like Figures 1 to 19As shown, this embodiment discloses a circuit breaker, which includes a stationary contact 1, a moving contact 2, a rotating shaft 3, a push rod 4, a traction rod 5, and an operating mechanism 6. The traction rod 5 is rotatably connected to the operating mechanism 6, the push rod 4 is rotatably and slidably connected to the rotating shaft 3, and the moving contact 2 is rotatably connected to the rotating shaft 3 and has a coupling state and an electric repulsion state. In the coupling state, the moving contact 2 is coupled to the stationary contact 1. In the electric repulsion state, the moving contact 2 is disconnected from the stationary contact 1. The oscillation of the moving contact 2 acts on one end of the push rod 4 and drives the push rod 4 to move, so that the other end of the push rod 4 acts on the traction rod 5 and drives the traction rod 5 to rotate, thereby realizing the release of the operating mechanism 6.

[0106] When the circuit breaker is closed, the moving contact 2 is in a coupled state and coupled to the stationary contact 1. When the moving contact 2 is in a state of electric repulsion, it separates from the stationary contact 1. During its upward movement around the rotation center, the moving contact 2 acts on one end of the push rod 4 and drives the push rod 4 to move. This causes the other end of the push rod 4 to move closer to the traction rod 5 and abut against the traction rod 5, thereby driving the traction rod 5 to rotate and release the operating mechanism 6. When the moving contact 2 separates from the stationary contact 1 due to electric repulsion, the rotation of the moving contact 2 acts on one end of the push rod 4, causing the push rod 4 to move on the rotating shaft 3. The push rod 4 can rotate and slide on the rotating shaft 3, and its rapid movement causes the operating mechanism 6 to trip, thus realizing the rapid tripping action of the circuit breaker. At the same time, the push rod 4 has high stability on the rotating shaft 3 and is easy to install on the rotating shaft 3.

[0107] In this embodiment, the moving contact 2 and the push rod 4 are indirectly connected, so that the swinging of the moving contact 2 will indirectly exert a force on the push rod 4. Specifically, as shown... Figure 2 and Figure 3 As shown, the circuit breaker also includes a push rod elastic element 7, with its two ends connected to the moving contact 2 and the push rod 4, respectively. The push rod elastic element 7 serves to buffer, dampen vibrations, and absorb energy. During the switching between the coupling state and the electric repulsion state of the moving contact 2, the push rod elastic element 7 causes the push rod 4 to move rapidly. This allows the moving contact 2 to drive the push rod 4 to move rapidly during coupling or disconnection, thereby causing the operating mechanism 6 to trip and unlock, achieving a rapid tripping action of the circuit breaker. Simultaneously, the push rod elastic element 7 provides a certain preload to the push rod 4, thereby improving connection strength and stability.

[0108] In this embodiment, there are three stationary contacts 1, three moving contacts 2, three rotating shafts 3, and three push rods 4, with the three rotating shafts 3 connected in series in the horizontal direction. There is one traction rod 5 and one operating mechanism 6, and all three push rods 4 can act on the same traction rod 5 to unlock the operating mechanism 6.

[0109] like Figures 3 to 7 As shown, the rotating shaft 3 has a sliding groove 31, and the push rod 4 includes a straight rod 41 and a boss 42. The straight rod 41 includes a hook portion 411, a movable portion 412, and a mounting portion 413 connected sequentially from top to bottom. The boss 42 is connected to the movable portion 412 and extends outward. The boss 42 is rotatably and slidably connected to the sliding groove 31. The moving contact 2 acts on the mounting portion 413, and the hook portion 411 acts on the traction rod 5 and drives the traction rod 5 to rotate. One end of the push rod elastic element 7 is installed and connected to the mounting portion 413. Under the swing of the moving contact 2 and the driving action of the push rod elastic element 7, the mounting portion 413 and the hook portion 411 rotate, so that the hook portion 411 can abut against the traction rod 5 to realize the release of the operating mechanism 6 and realize the rapid tripping action of the circuit breaker. Specifically, in this embodiment, there are two sliding grooves 31 and two bosses 42, and the two bosses 42 are respectively connected to both sides of the movable portion 412. The push rod 4 is inserted into two sliding grooves 31 via two protrusions 42 on both sides, allowing it to rotate on the shaft 3 and move within the sliding grooves 31, thus improving its stability and reliability during movement. Furthermore, the push rod 4 can be installed simply by inserting its two protrusions 42 into the two sliding grooves 31, making installation convenient and the structure simple.

[0110] Among them, the two bosses 42 can be integrally formed columnar structures, so that the integrally formed columnar structures can be installed and connected to the movable part 412, which is simple in structure and easy to process and manufacture.

[0111] The rotating shaft 3 also has a guide groove 32. Both the guide groove 32 and the sliding groove 31 are recessed inward from the outer surface of the rotating shaft 3, and the sliding groove 31 is located on the side wall of the guide groove 32. The straight rod 41 extends into the guide groove 32. The guide groove 32 has a limiting function, and the straight rod 41 on the push rod 4 will be located in the guide groove 32 and move or swing within the guide groove 32, effectively preventing the push rod 4 from deviating or misaligning during use, greatly improving the stability and reliability of the circuit breaker. At the same time, the structure is simple, easy to process and manufacture, and easy to assemble. The two sliding grooves 31 are located on opposite sides of the guide groove 32.

[0112] like Figure 4As shown, the straight rod 41 has a first actuating surface 414 and a second actuating surface 415. The first actuating surface 414 is located between the hook portion 411 and the movable portion 412, and the second actuating surface 415 is located between the movable portion 412 and the mounting portion 413. In the coupled state, the second actuating surface 415 is in contact with and abuts against the rotating shaft 3. In the electric repulsion state, the second actuating surface 415 rotates in a direction away from the rotating shaft 3 until the first actuating surface 414 is in contact with and abuts against the rotating shaft 3. In the coupled state, a preload is provided by the push rod elastic element 7 and acts on the push rod 4, and the push rod 4 is in contact with and abuts against the rotating shaft 3 through the second actuating surface 415. In the electric repulsion state, the push rod 4 rotates a certain angle to the disengaged position, and the first actuating surface 414 is in contact with and abuts against the rotating shaft 3 and is in the disengaged position, so that the push rod 4 abuts against and drives the traction rod 5 to rotate, thereby realizing the release of the operating mechanism 6. The push rod 4 is stably attached to the rotating shaft 3 through the first actuation surface 414 or the second actuation surface 415 without any shaking or misalignment; at the same time, it ensures that the push rod 4 can rotate precisely into position when switching states, which greatly improves the stability of the circuit breaker.

[0113] like Figure 5 and Figure 6 As shown, the rotating shaft 3 has a third actuating surface 33 and a fourth actuating surface 34 that restrict the rotation of the push rod 4. The third actuating surface 33 is located above the fourth actuating surface 34. In the coupled state, the fourth actuating surface 34 is in contact with and abuts against the push rod 4. In the electric repulsion state, the push rod 4 rotates in a direction away from the fourth actuating surface 34 until it is in contact with and abuts against the third actuating surface 33. In the coupled state, the rotating shaft 3, through the fourth actuating surface 34, is in contact with and abuts against the second actuating surface 415 on the push rod 4 to restrict the rotation of the push rod 4. In the electric repulsion state, the push rod 4 rotates a certain angle to the disengaged position, and the rotating shaft 3, through the third actuating surface 33, is in contact with and abuts against the first actuating surface 414 of the push rod 4 and is in the disengaged position, so that the push rod 4 abuts against and drives the traction rod 5 to rotate, thereby realizing the release of the operating mechanism 6. The rotating shaft 3 and the push rod 4 are closely fitted together through the actuation surface, resulting in a large contact area. This ensures that the push rod 4 can rotate precisely into position without shaking or misalignment when switching states, greatly improving the stability of the circuit breaker.

[0114] like Figure 3 and Figure 7As shown, the moving contact 2 includes a contact portion 21, a rotating portion 22, and a connecting portion 23 acting on the push rod 4, connected sequentially along its length. The rotating portion 22 is rotatably connected to the rotating shaft 3, and the contact portion 21 is coupled to the stationary contact 1. The push rod elastic element 7 is mounted on the connecting portion 23. In the state of electric repulsion, the contact portion 21 swings upward, and the connecting portion 23 swings downward, causing the moving contact 2 to rotate counterclockwise. The push rod elastic element 7 applies force to the push rod 4, causing the push rod 4 to rotate clockwise and abut against the traction rod 5, thereby releasing the operating mechanism 6. Meanwhile, the moving contact 2 has a simple overall structure and is easy to assemble.

[0115] The circuit breaker also includes a contact spring 8, and the moving contact 2 includes a protrusion 24. The protrusion 24 is located between the rotating part 22 and the contact part 21 and extends downward. The contact spring 8 is connected to the protrusion 24 and applies a force to the moving contact 2 close to the stationary contact 1. The bottom of the rotating shaft 3 has a mounting port, and the bottom of the contact spring 8 is hooked into the mounting port. The top of the contact spring 8 is hooked into the protrusion 24. Under the action of the contact spring 8, a downward force is always maintained on the contact part 21 on the moving contact 2, ensuring that the contact part 21 is in closed contact with the stationary contact 1. At the same time, the structure is simple and easy to assemble.

[0116] The contact portion 21 includes a contact seat 211 and a contact point 212. The contact seat 211 is connected to the rotating portion 22, and the contact point 212 is abutted against the bottom of the contact seat 211. The bottom of the contact seat 211 has an inwardly recessed semi-circular recess 213. The contact portion 21 contacts and abuts against the stationary contact 1 through the contact point 212, and the contact point 212 is located at the recess of the semi-circular recess 213 of the contact seat 211. When the contact seat 211 and the contact point 212 are connected, the semi-circular recess 213 can effectively prevent solder from overflowing onto the contact portion 21 during soldering, thus preventing the surface of the contact portion 21 from becoming uneven.

[0117] In this embodiment, as Figure 3 , Figure 4 and Figure 7 As shown, the push rod elastic element 7 is a spring, which makes the push rod elastic element 7 highly elastic, with good performance, and easily returns to its original shape after the external force is removed.

[0118] The moving contact 2 has a connecting hole 25 at one end facing the push rod 4, and the push rod 4 has a mounting hole 43 at one end facing the moving contact 2. The two ends of the push rod elastic element 7 are respectively hooked onto the connecting hole 25 and the mounting hole 43. The mounting hole 43 is located on the mounting part 413 of the push rod 4, and the connecting hole 25 is located on the connecting part 23 of the moving contact 2. The two ends of the spring are respectively hooked onto the connecting hole 25 and the mounting hole 43, making the installation and connection of the push rod elastic element 7 convenient and the structure simple.

[0119] The circuit breaker also includes a base 9, a middle cover 11 and a housing 12 arranged sequentially from bottom to top. The stationary contact 1 is disposed on the base 9, the rotating shaft 3 is rotatably connected to the base 9, and the operating mechanism 6 is disposed on the middle cover 11. A receiving space is formed between the base 9, the middle cover 11 and the housing 12, and the stationary contact 1, the moving contact 2 and the operating mechanism 6 are disposed in the receiving space.

[0120] like Figure 2 , Figure 18 and Figure 19 As shown, the circuit breaker also includes a middle cover 11 and a baffle 115. The operating mechanism 6 is mounted on the middle cover 11, and the baffle 115 is slidably connected to the middle cover 11. In the state of electric repulsion, the moving contact 2 rotates upward and abuts against the baffle 115, so that the baffle 115 rotates synchronously with the moving contact 2. The baffle 115 has a blocking function. During disconnection, the baffle 115 can prevent gas and metal particles from being ejected backward, resulting in high safety and stability, and also facilitating the entry of the arc into the arc-extinguishing chamber 15. The baffle 115 and the moving contact 2 are linked and rotate synchronously with the moving contact 2. At the same time, the baffle 115 acts as a limiter for the moving contact 2, restricting the moving contact 2 from continuing to rotate upward by abutting against the moving contact 2, thereby improving safety and stability.

[0121] The top inner wall of the middle cover 11 has a downward protrusion, and a sliding groove 116 is provided on both sides of the protrusion. The two ends of the baffle 115 are located in the two sliding grooves 116 and slide in the sliding grooves 116. The baffle 115, the sliding grooves 116 and the moving contact 2 are concentrically arranged, that is, concentrically arranged with the rotating part 22 of the moving contact 2.

[0122] like Figure 1 , Figure 14 , Figure 15 , Figure 16 and Figure 17As shown, the operating mechanism 6 includes a handle 63, a rocker arm 62, a jump buckle 64, a locking buckle 65, a re-locking buckle 66, a main spring 67, and two side plates 61. The two side plates 61 are spaced apart. The rocker arm 62, jump buckle 64, locking buckle 65, re-locking buckle 66, and main spring 67 are all located between the two side plates 61. The handle 63 is connected to the top of the rocker arm 62, and the main spring 67 is connected to the bottom of the rocker arm 62. The two ends of the rocker arm 62 are respectively connected to the two side plates 61 and can rotate relative to the two side plates 61. The locking buckle 65 and the traction rod 5 are rotatably connected to the two side plates 61. The jump buckle 64... One end of the latch 66 is rotatably connected to two side plates 61. The rocker arm 62 abuts against the other end of the latch 64, and the other end of the latch 64 is locked to the lock 65. The latch 66 includes a first hinge part 661, a fastening part 662 and a swinging part 663 connected from top to bottom. The first hinge part 661 is rotatably connected to two side plates 61. The fastening part 662 is connected to the lock 65. The swinging part 663 abuts against the traction rod 5. The rotation of the traction rod 5 will drive the swinging part 663 to swing and drive the lock 65 to rotate, so that the lock 65 and the latch 64 are unlocked.

[0123] Both side plates 61 have sliding grooves, and the two sides of the rocker arm 62 are slidably connected to the two sliding grooves, making the rocker arm 62 highly stable during rotation. The jump buckle 64 is rotatably connected to the two side plates 61 via the jump buckle shaft, the latch 65 is rotatably mounted on the two side plates 61 via the latch shaft, the re-latch 66 is rotatably connected to the two side plates 61 via the re-latch shaft, and the traction rod 5 is rotatably mounted on the two side plates 61. When the circuit breaker is in the closed state, the circuit breaker is in normal operation, the main spring 67 is stretched and connected to the rocker arm 62 to store energy, the latch 65 is locked in the locking groove 6431 of the jump buckle 64, the traction rod 5 has a notch, and the swing part 663 of the re-latch 66 extends into the notch and abuts against the notch of the traction rod 5 to achieve interlocking between the traction rod 5 and the re-latch 66. When the moving contact 2 separates from the stationary contact 1 due to electric repulsion, the moving contact 2 separates from the stationary contact 1 and drives the push rod 4 to move. This causes the push rod 4 to drive the traction rod 5 to rotate, which in turn causes the notch of the traction rod 5 to disengage from the swing part 663 of the re-clamp 66 and drives the re-clamp 66 to rotate and swing. The re-clamp 66, through the latching part 662, drives the latch 65 to rotate and unlocks it from the trip latch 64, thereby causing the operating mechanism 6 to disengage and unlock to achieve the rapid tripping action of the circuit breaker. At the same time, the overall structure is well-coordinated and highly stable.

[0124] After the circuit breaker is released, the swinging part 663 of the re-clamp 66 extends into the notch of the traction rod 5. During the closing process, the operator's hand applies force to the handle 63, driving the handle 63 and the rocker arm 62 to rotate on the two side plates 61. The rocker arm 62 will apply a downward force to the trip latch 64. The locking shaft of the latch 65 has a recessed opening, and the sliding surface 6432 of the trip latch 64 will continue to slide downward through the recessed opening, so that the latch 65 is locked in the locking groove 6431 of the trip latch 64. During the re-clamping process, the position of the re-clamp 66 is the same as the closing position. The swinging part 663 of the re-clamp 66 extends into the notch of the traction rod 5 to achieve interlocking between the traction rod 5 and the re-clamp 66. At this time, the entire circuit breaker will return to the normal working state, completing one working cycle. The operating mechanism 6 is connected to the middle cover 11 by a screw that passes through the bottom. The central axis of the threaded hole is designed to be located on the plane of the side plate 61.

[0125] The jump buckle 64 includes a second hinge portion 641, a mating portion 642, and a locking portion 643 connected sequentially in a horizontal direction. The second hinge portion 641 is rotatably connected to the two side plates 61. The operating mechanism 6 also includes an upper connecting rod 68 and a lower connecting rod. The upper connecting rod 68 is connected to the lower connecting rod and located above the lower connecting rod, and the upper connecting rod 68 is connected to the mating portion 642. The rocker arm 62 abuts against the locking portion 643 and drives the locking portion 643 to swing downward, so that the locking portion 643 is locked with the locking buckle 65, and drives the upper connecting rod 68 and the lower connecting rod to drive the rotation of the rotating shaft 3. The second hinge portion 641 is connected to the two side plates 61 through the jump buckle shaft. The locking groove 6431 and the sliding surface 6432 are located on the locking portion 643, so that the locking portion 643 is locked with the locking buckle 65 through the locking groove 6431. The upper connecting rod 68 and the lower connecting rod have a transmission function. When the circuit is closed, the trip latch 64 applies a downward force to the upper connecting rod 68 through the mating part 642, and drives the lower connecting rod to move and the rotating shaft 3 to rotate, so that the rotating shaft 3 returns to the coupling state, and the moving contact 2 and the stationary contact 1 come into contact and couple with each other.

[0126] like Figure 6 As shown, the rotating shaft 3 has a limiting surface 35. In the coupled state, the limiting surface 35 is located below the moving contact 2. In the electric repulsion state, the rotation of the rotating shaft 3 will cause the limiting surface 35 to move upward and abut against the moving contact 2, thereby preventing the moving contact 2 from rotating downward and contacting the stationary contact 1. The limiting surface 35 restricts the moving contact 2, effectively limiting the phenomenon of the moving contact 2 falling back, thereby greatly improving the safety and stability of the circuit breaker. In the electric repulsion state, the operating mechanism 6 is released by the push rod 4 and the traction rod 5, and the trip latch 64 and the lock latch 65 are unlocked. The trip latch 64 swings upward through the mating part 642 and drives the upper connecting rod 68 and the lower connecting rod to move upward together, so that... Figure 6When the rotating shaft 3 rotates counterclockwise, the limiting surface 35 will move upward and abut against the moving contact 2 to prevent the moving contact 2 from rotating downward and contacting the stationary contact 1.

[0127] like Figure 11 , Figure 12 and Figure 13 As shown, the circuit breaker also includes a drawer-type terminal block 10. The base 9 has a receiving cavity 91 for mounting the drawer-type terminal block 10. The receiving cavity 91 is recessed horizontally inward from the side of the base 9. The drawer-type terminal block 10 is inserted horizontally into the receiving cavity 91 and connected to the base 9. The drawer-type terminal block 10 is used to install a hexagonal nut, thereby achieving electrical connection with the moving contact 2 or the stationary contact 1. There are six drawer-type terminal blocks 10. Three receiving cavities 91 are provided on each opposite side of the base 9. The drawer-type terminal blocks 10 are connected to the receiving cavities 91 of the base 9 by a horizontal pull-out method, making the installation of the drawer-type terminal blocks 10 very convenient.

[0128] The drawer-type terminal block 10 includes a receiving part 101, a base plate 102, a side panel 103, and a snap-fit ​​part 104. The receiving part 101 is connected to the base plate 102 and extends into the receiving cavity 91. The snap-fit ​​part 104 is connected to one end of the base plate 102 near the base 9. The side panel 103 is connected to the other end of the base plate 102 away from the base 9 and extends upward and protrudes. The snap-fit ​​part 104 is snapped into the base 9 and the side panel 103 abuts against the side of the base 9. The receiving part 101 is used to install two hexagonal nuts and extend into the receiving cavity 91. The bottom surface of the base 9 has a snap-fit ​​groove 93. The snap-fit ​​part 104 is snapped into the snap-fit ​​groove 93. The side panel 103 fits against the side of the base 9, thereby realizing the installation and connection of the drawer-type terminal block 10 on the base 9, and the connection is stable and reliable. The side panel 103 protrudes upward and has a protective function, with high safety and stability. At the same time, it is easy to disassemble and has a simple structure.

[0129] The inner walls of the receiving cavity 91 on both sides have horizontally extending slots 92, and the receiving part 101 has an outwardly protruding latching part 1011, which moves horizontally into the slots 92. The latching parts 1011 on both sides of the receiving part 101 move and connect to the two slots 92 respectively, so that the drawer-type terminal block 10 can only move horizontally in the receiving cavity 91 and cannot be offset in other directions, further improving the stability and reliability of the connection between the drawer-type terminal block 10 and the base 9. The bottom plate 102 fits against the bottom surface of the base 9. The side panel 103 is connected to the bottom plate 102 and the receiving part 101, and the drawer-type terminal block 10 is integrally formed.

[0130] like Figure 8 , Figure 9 and Figure 10As shown, the stationary contact 1 includes a conductive element 111, an arc-starting plate 112, and a reflector plate 113. The conductive element 111 includes a conductive mounting portion 1111 and a bending portion 1112. One end of the bending portion 1112 is connected to the end of the conductive mounting portion 1111 near the moving contact 2, and the other end of the bending portion 1112 is bent upward and in a direction away from the moving contact 2. The top of the bending portion 1112 has a stationary contact point that contacts the moving contact 2. The arc-starting plate 112 is connected to the end of the bending portion 1112 away from the moving contact 2. The two ends of the reflector plate 113 are respectively connected to the arc-starting plate 112 and the conductive mounting portion 1111. One end of the conductive element 111 is connected to the drawer-type terminal block 10 through the conductive mounting part 1111, and the other end is a bent structure that is coupled to the moving contact 2 through the stationary contact of the bent part 1112. One end of the arc-starting plate 112 is connected to the conductive element 111, and the other end is connected to the reflector plate 113. The reflector plate 113 is used to install and connect the arc-starting plate 112, effectively preventing the arc-starting plate 112 from shifting upward, thereby effectively isolating the arc between the arc-starting plate 112 and the arc-extinguishing chamber 15, and protecting the arc-starting plate 112. At the same time, it effectively prevents the breakdown phenomenon between the stationary contact 1 and the arc-extinguishing chamber 15, protects the arc-starting angle and the stationary contact 1 from arc burning, and generates gas at high temperature, which is conducive to the upward climbing of the arc, resulting in high safety and stability.

[0131] Specifically, the reflector 113 includes a connecting portion 1131 and a wrapping portion 1132 connected to each other. The connecting portion 1131 is connected to the conductive mounting portion 1111. The bottom of the wrapping portion 1132 has a receiving groove 1133, and the arc-inducing plate 112 extends upward into the receiving groove 1133. One end of the arc-inducing plate 112 is connected to the conductive component 111, and the other end of the arc-inducing plate 112 extends upward into the receiving groove 1133 of the wrapping portion 1132, preventing the arc-inducing plate 112 from tilting upward due to generated gas, thus ensuring high safety and stability. Furthermore, the overall structure is simple and easy to use. The reflector 113 is made of plastic.

[0132] Example 2

[0133] like Figures 20 to 29As shown, the parts of the circuit breaker in Embodiment 2 that are the same as those in Embodiment 1 will not be repeated; only the differences will be explained. In Embodiment 1, the moving contact 2 and the push rod 4 are indirectly connected via the push rod elastic element 7. In Embodiment 2, the moving contact 2 and the push rod 4 are directly connected. Specifically, the push rod 4 is directly and rotatably connected to the moving contact 2, so that when the moving contact 2 drives the push rod 4 to swing, it drives the push rod 4 to move within the rotating shaft 3. When the current in the circuit breaker exceeds the limited fault current value, the moving contact 2 will open. This opening directly drives the push rod 4 to rotate, causing it to move within the sliding groove 31. This brings the push rod 4 into contact with the traction rod 5, driving it to rotate. The push rod 4 pushes the traction rod 5 to rotate a certain angle to the tripping position, thus disengaging the operating mechanism 6 and pulling the rotating shaft 3 and the moving contact 2 together. The limiting surface 35 of the rotating shaft 3 abuts against the moving contact 2 to prevent it from rotating downwards, thereby achieving rapid tripping action, improving the circuit breaker's breaking capacity, and ensuring high safety and stability. Simultaneously, the overall structure is simple and easy to assemble.

[0134] In this embodiment 2, as Figure 21 As shown, the moving contact 2 has a connecting hole 25 at one end facing the push rod 4. The push rod 4 is connected to the connecting hole 25 and can rotate within it. The mounting part 413 of the push rod 4 has a cylinder that is inserted into the connecting hole 25, allowing the cylinder to rotate within the hole but not slide within it. This design is simple and easy to install. Alternatively, in other embodiments, the mounting part 413 of the push rod 4 can also be rotatably connected to the connecting hole 25 via a pin.

[0135] like Figure 20 , Figure 22 , Figure 23 and Figure 24 As shown, the circuit breaker also includes an indicating component 13. The bottom of the indicating component 13 abuts against the rotating shaft 3, and the rotating shaft 3 acts on the indicating component 13 and drives its rotation. The indicating component 13 has an indicating function; the rotation of the rotating shaft 3 will drive the indicating component 13 to rotate, thus making it easy for the operator to clearly know whether the circuit breaker is open or closed. The housing 12 has a transparent sheet 121, and the indicating component 13 is located within the receiving space and correspondingly positioned below the transparent sheet 121.

[0136] The indicating component 13 includes a mounting bracket 132, an indicating element 131, and a reset element 133. The mounting bracket 132 is connected to the side of the operating mechanism 6. The indicating element 131 includes an indicating mark 1311, a rotating part 1312, and a stop part 1313 connected sequentially from top to bottom. The rotating part 1312 is rotatably connected to the mounting bracket 132. The stop part 1313 abuts against the rotating shaft 3. The reset element 133 is mounted on the mounting bracket 132 and abuts against the indicating element 131. The rotation of the rotating shaft 3 will act on the stop part 1313, thereby causing the stop part 1313 and the indicating mark 1311 to swing, so that the corresponding mark on the indicating mark 1311 can be easily viewed by the operator through the transparent sheet 121. The reset element 133 has a reset function. When the rotation of the rotating shaft 3 causes it to no longer abut against the stop part 1313 or the force is less than the force of the reset element 133, the reset element 133 will drive the indicating mark 1311 to swing. Meanwhile, the indicator component 13 has a simple overall structure and is easy to use. The reset component 133 is a torsion spring. The mounting bracket 132 is L-shaped. The horizontal part of the mounting bracket 132 is connected to the outer side of the side plate 61 of the operating mechanism 6, and the vertical part of the mounting bracket 132 is connected to the rotating part 1312 through a rotating shaft. The installation and connection are convenient and the stability is high.

[0137] like Figure 23 and Figure 25 As shown, the circuit breaker also includes a flux trip unit 14, which is vertically mounted on the middle cover 11. The bottom of the flux trip unit 14 acts on the traction rod 5 and drives the traction rod 5 to rotate, thereby releasing the operating mechanism 6. When the circuit breaker is energized, the flux trip unit 14 will not act on the traction rod 5; when a power outage occurs, the flux trip unit 14 will act against the traction rod 5 and drive the traction rod 5 to rotate, causing the operating mechanism 6 to trip, thus realizing the circuit breaker's tripping action, ensuring high safety and stability. Simultaneously, remote operation and control can be achieved through the flux trip unit 14, facilitating operation and control. The vertical mounting of the flux trip unit 14 on the middle cover 11 makes full use of the internal space of the circuit breaker, resulting in a more compact structure.

[0138] The magnetic flux trip unit 14 includes a push rod 141, an elastic element 143, a bracket 144, and an electromagnetic unit 142 mounted on the bracket 144. The bracket 144 is mounted on the middle cover 11. The top of the push rod 141 is connected to the electromagnetic unit 142, and the bottom of the push rod 141 acts on the traction rod 5. The elastic element 143 presses against the push rod 141 and the electromagnetic unit 142 and applies an upward force to the push rod 141. Figure 23The magnetic flux trip unit housing is omitted. The elastic element 143 and the electromagnetic unit 142 are disposed inside the magnetic flux trip unit housing, which is mounted on the bracket 144. When energized, the electromagnetic unit 142 provides force and drives the push rod 141 downward. The elastic element 143 is compressed between the top of the electromagnetic unit 142 and the push rod 141, and there is a gap between the bottom of the push rod 141 and the traction rod 5. When the circuit is abnormal, the coil of the electromagnetic unit 142 generates an induced magnetic field, the moving iron core of the electromagnetic unit 142 actuates and pushes the push rod 141 upward. At the same time, with the cooperation of the elastic element 143, the push rod 141 moves upward under the elastic action of the elastic element 143 and abuts against the traction rod 5, causing the operating mechanism 6 to trip, thereby realizing the circuit breaker's tripping action. This ensures high safety and stability. Furthermore, the overall structure is simple.

[0139] The elastic element 143 is a spring, which is compressed between the top of the push rod 141 and the top of the electromagnetic unit 142. The push rod 141 passes through the magnetic flux trip housing and its top and bottom protrude to the outside of the magnetic flux trip housing. The bottom of the push rod 141 is used to move upward to pull the rotation of the traction rod 5. The magnetic flux trip unit 14 is located on the outside of the side plate 61. The rocker arm shaft of the rocker arm 62 extends to the outer side of the side plate 61. During the closing process, the rocker arm shaft of the rocker arm 62 will abut against the top of the push rod 141. The rocker arm 62 continues to rotate to close the circuit, causing the push rod 141 to move downward to the coupling state. When the circuit breaker is closed, there is a gap between the bottom of the push rod 141 and the traction rod 5, thereby enabling the magnetic flux trip unit 14 to continue to work normally.

[0140] like Figure 21 , Figure 22 , Figure 23 and Figure 26 As shown, the circuit breaker also includes an arc-extinguishing chamber 15, which includes a housing 151 and multiple grid plates 152. The housing 151 is located on the stationary contact 1, and the moving contact 2 extends into the housing 151. The multiple grid plates 152 are arranged in the housing 151 along the height direction, and one end of the grid plate 152 facing away from the moving contact 2 has an arc-shaped portion. The housing 151 is mounted on the base 9, and the multiple grid plates 152 are arranged in the housing 151 and located on the stationary contact 1. By adding an arc-shaped portion to the tail of the grid plate 152, rapid arc cutting is achieved when the arc contacts the grid plate 152, greatly enhancing the arc-extinguishing capability of the arc-extinguishing chamber 15.

[0141] In this design, the end of the grid plate 152 facing away from the moving contact 2 has multiple protrusions 1521 and multiple recesses 1522. The protrusions 1521 and recesses 1522 are intersected to form multiple arc-shaped portions, and any adjacent protrusions 1521 and recesses 1522 transition smoothly. The multiple arc-shaped portions formed by the protrusions 1521 and recesses 1522 enable rapid arc cutting at the tail end, greatly enhancing the arc-extinguishing capability of the arc-extinguishing chamber 15. Furthermore, the structure is simple and easy to manufacture.

[0142] The stationary contact 1 in this embodiment 2 differs from that in embodiment 1, such as... Figure 21 and Figure 27 As shown, the stationary contact 1 includes a conductive element 111, an arc-starting plate 112, and a plastic pad 114. The conductive element 111 includes a conductive mounting portion 1111 and a bending portion 1112. One end of the bending portion 1112 is connected to the end of the conductive mounting portion 1111 near the moving contact 2, and the other end of the bending portion 1112 is bent upwards and in a direction away from the moving contact 2. The top of the bending portion 1112 has a stationary contact point that contacts the moving contact 2. The plastic pad 114 is connected to the conductive element 111. The electrical mounting part 1111 has a portion of the plastic pad 114 extending between the conductive mounting part 1111 and the bent part 1112, providing support and abutment for the bent part 1112. One end of the arc-inducing piece 112 is connected to the end of the bent part 1112 away from the moving contact 2, and the other end of the arc-inducing piece 112 is connected to the plastic pad 114. The plastic pad 114 provides connection and support for the bent part 1112 and the plastic pad 114, resulting in high stability.

[0143] like Figure 21 , Figure 22 , Figure 23 and Figure 28 As shown, the circuit breaker also includes a current transformer 16, a conductive plate 18, and a terminal block 17. The conductive plate 18, current transformer 16, and terminal block 17 are arranged sequentially in a horizontal direction. One end of the conductive plate 18 is electrically connected to the moving contact 2, and the other end of the conductive plate 18 is inserted into the through-hole of the current transformer 16. The terminal block 17 is connected to the current transformer 16. Specifically, the stationary contact 1, moving contact 2, conductive plate 18, current transformer 16, and terminal block 17 are arranged sequentially in a horizontal direction. A terminal block is provided at the end of the conductive plate 18, through which the conductive plate 18 is electrically connected to the moving contact 2. The other end of the conductive plate 18 is inserted into the through-hole of the current transformer 16. The current transformer 16 and the conductive plate 18 are arranged parallel to each other, which makes better use of the internal space of the circuit breaker compared to the traditional vertical arrangement. Simultaneously, the current transformer 16 is used for the acquisition, processing, and application of data signals, further improving the safety and stability of the circuit breaker.

[0144] The current transformer 16 includes two transformer housings 161 and two magnetic circuits 162. The two transformer housings 161 are interlocked, facilitating installation and maintenance. The two magnetic circuits 162 are located within the two transformer housings 161 and protect the internal electronic components of the current transformer 16, further improving the safety and stability of the circuit breaker. The terminal block 17 connected to the current transformer 16 is L-shaped. The horizontal portion of the terminal block 17 connects to the drawer-type terminal block 10, and the vertical portion connects to the current transformer 16.

[0145] like Figure 21 , Figure 22 , Figure 23 and Figure 29 As shown, the circuit breaker also includes a shunt trip unit 19, which is positioned above the traction rod 5. The push rod 194 at the bottom of the shunt trip unit 19 extends and acts on the traction rod 5, driving it to rotate and thus releasing the operating mechanism 6. When the circuit breaker is energized, the shunt trip unit 19 operates normally and prevents the push rod 194 from moving downwards, maintaining a gap between the push rod 194 and the traction rod 5. In the event of a power outage, the push rod 194 at the bottom of the shunt trip unit 19 extends downwards and abuts against the traction rod 5, causing the traction rod 5 to rotate and the operating mechanism 6 to trip, thus achieving the circuit breaker's tripping action. This design ensures high safety and stability.

[0146] In this embodiment, the shunt trip unit 19 includes a shunt trip unit housing 191, a stationary iron core 192, a moving iron core 193, a push rod 194, a circuit board 196, and a spring 195. The stationary iron core 192, the moving iron core 193, the circuit board 196, and the spring 195 are all disposed inside the shunt trip unit housing 191. One end of the push rod 194 is connected to the moving iron core 193, and the other end extends to the lower surface of the shunt trip unit housing 191. When energized, the coil generates a magnetic field, and the stationary iron core 192 and the moving iron core 193 attract each other. After de-energization, the magnetic field changes, and under the action of the spring 195, the moving iron core 193 and the push rod 194 move downward and abut against the traction rod 5, causing the traction rod 5 to rotate and the operating mechanism 6 to trip, thereby realizing the tripping action of the circuit breaker.

[0147] The shunt trip unit 19 also includes a limiting member 197, which is located inside the shunt trip unit housing 191 and abuts against the moving iron core 193 and / or the push rod 194 to limit the push rod 194 from continuing to move downward. The limiting member 197 plays a limiting role and restricts the downward movement of the moving iron core 193 and the push rod 194. At the same time, it can also increase the magnetic field strength.

[0148] The circuit breaker also includes an undervoltage release 20, which is positioned above the traction rod 5. The push rod at the bottom of the undervoltage release 20 extends and acts on the traction rod 5, driving it to rotate and thus releasing the operating mechanism 6. When the voltage is normal, the undervoltage release 20 operates normally and prevents the push rod from moving downwards, maintaining a gap between the push rod and the traction rod 5. When undervoltage occurs, the push rod at the bottom of the shunt trip release 19 extends downwards and abuts against the traction rod 5, causing the traction rod 5 to rotate and the operating mechanism 6 to trip, thus tripping the circuit breaker. This provides high safety and stability. The specific structure of the undervoltage release 20 is the same as that of the shunt trip release 19, and will not be repeated here.

[0149] Example 3

[0150] like Figure 30 and Figure 31 As shown, the same parts of the circuit breaker in this embodiment 3 as those in embodiment 2 will not be repeated; only the differences will be explained. In this embodiment 3, the moving contact 2 and the push rod 4 are not directly or indirectly connected; instead, they are in a clearance fit and abut against each other. Specifically, the moving contact 2 has a mounting groove 26 at the end facing the push rod 4, and one end of the push rod 4 extends into the mounting groove 26. The opposite sides of the mounting groove 26 have a first abutting portion 261 and a second abutting portion 262, respectively. In the coupled state, the first abutting portion 261 abuts against the push rod 4 to create a gap between the push rod 4 and the traction rod 5. In the electric repulsion state, the first abutting portion 261 moves away from the push rod 4, and the second abutting portion 262 moves towards the push rod 4 and abuts against the push rod 4, thereby causing the push rod 4 to rotate and act on the traction rod 5. A mounting groove 26 is provided on the connecting part 23 of the moving contact 2, allowing the push rod 4 to extend into the mounting groove 26. During rotation, the moving contact 2 abuts against the push rod 4 through the first abutting part 261 and the second abutting part 262 on opposite sides of the mounting groove 26, driving the push rod 4 to move, thereby achieving switching between different states. No interference occurs during use, resulting in high stability. At the same time, the overall structure is simple and easy to assemble.

[0151] When the circuit breaker is closed, the moving contact 2 abuts against the push rod 4 via the first abutment part 261, creating a gap between the push rod 4 and the traction rod 5, thus ensuring the stability and reliability of the circuit breaker. When the moving contact 2 is in a state of electric repulsion, it rotates around the rotating part 22, causing the first abutment part 261 in the mounting groove 26 to move away from the push rod 4, while the second abutment part 262 moves towards the push rod 4. This continues until the second abutment part 262 abuts against the push rod 4, causing the push rod 4 to rotate a certain angle to the tripping position. This allows the push rod 4 to abut against the traction rod 5 and drive it to rotate, thereby tripping the operating mechanism 6, achieving rapid tripping, improving the circuit breaker's breaking capacity, and ensuring high safety and stability.

[0152] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0153] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A circuit breaker characterized by, It includes a moving contact (2), a stationary contact (1), an operating mechanism (6), a rotating shaft (3), a traction rod (5), and a push rod (4). The traction rod (5) is rotatably connected to the operating mechanism (6), the push rod (4) is rotatably and slidably connected to the rotating shaft (3), and the moving contact (2) is rotatably connected to the rotating shaft (3) and has a coupling state and an electric repulsion state. In the coupled state, the moving contact (2) is coupled to the stationary contact (1); In the state of electric repulsion, the moving contact (2) is disconnected from the stationary contact (1). The moving contact (2) swings and acts on one end of the push rod (4) and drives the push rod (4) to move, so that the other end of the push rod (4) acts on the traction rod (5) and drives the traction rod (5) to rotate, thereby realizing the release of the operating mechanism (6).

2. The circuit breaker of claim 1, wherein, The rotating shaft (3) has a sliding groove (31), and the push rod (4) includes a straight rod (41) and a boss (42). The straight rod (41) includes a hook part (411), a movable part (412) and a mounting part (413) connected from top to bottom. The boss (42) is connected to the movable part (412) and extends outward. The boss (42) is rotatably and slidably connected in the sliding groove (31). The moving contact (2) is used to act on the mounting part (413), and the hook part (411) is used to act on the traction rod (5) and drive the traction rod (5) to rotate.

3. The circuit breaker of claim 2, wherein, The rotating shaft (3) also has a guide groove (32), both the guide groove (32) and the sliding groove (31) are recessed inward from the outer surface of the rotating shaft (3), and the sliding groove (31) is located on the side wall of the guide groove (32), and the straight rod (41) extends into the guide groove (32).

4. The circuit breaker of claim 2, wherein, The straight rod (41) has a first actuating surface (414) and a second actuating surface (415), the first actuating surface (414) being located between the hook portion (411) and the movable portion (412), and the second actuating surface (415) being located between the movable portion (412) and the mounting portion (413); In the coupled state, the second actuating surface (415) abuts against the rotating shaft (3); In the state of electric repulsion, the second actuating surface (415) rotates in a direction away from the rotating shaft (3) until the first actuating surface (414) comes into contact with and abuts against the rotating shaft (3).

5. The circuit breaker of claim 1, wherein, The rotating shaft (3) has a third actuating surface (33) and a fourth actuating surface (34) that restrict the rotation of the push rod (4), and the third actuating surface (33) is located above the fourth actuating surface (34); In the coupled state, the fourth actuating surface (34) abuts against the push rod (4); In the state of electric repulsion, the push rod (4) rotates in a direction away from the fourth actuation surface (34) until the push rod (4) comes into contact with and abuts against the third actuation surface (33).

6. The circuit breaker of any one of claims 1-5, wherein, The push rod (4) is directly and rotatably connected to the moving contact (2) so that when the moving contact (2) drives the push rod (4) to swing, it drives the push rod (4) to move within the rotating shaft (3).

7. The circuit breaker of claim 6, wherein, The moving contact (2) has a connecting hole (25) at one end facing the push rod (4), and the push rod (4) is connected to the connecting hole (25) and can rotate within the connecting hole (25).

8. The circuit breaker of any one of claims 1-5, wherein, The circuit breaker also includes a push rod elastic element (7), the two ends of which are connected to the moving contact (2) and the push rod (4), respectively.

9. The circuit breaker of claim 8, wherein, The push rod elastic element (7) is a spring; And / or, the moving contact (2) has a connecting hole (25) at one end facing the push rod (4), the push rod (4) has a mounting hole (43) at one end facing the moving contact (2), and the two ends of the push rod elastic element (7) are respectively hooked to the connecting hole (25) and the mounting hole (43).

10. The circuit breaker of any one of claims 1-5, wherein, The moving contact (2) has a mounting groove (26) at one end facing the push rod (4), and one end of the push rod (4) extends into the mounting groove (26). The mounting groove (26) has a first abutting portion (261) and a second abutting portion (262) on opposite sides. In the coupled state, the first abutting portion (261) abuts against the push rod (4) to create a gap between the push rod (4) and the traction rod (5); In the state of electric repulsion, the first abutting part (261) moves away from the push rod (4), and the second abutting part (262) moves towards the push rod (4) and abuts against the push rod (4) to drive the push rod (4) to rotate and act on the traction rod (5).

11. The circuit breaker of claim 1, wherein The moving contact (2) includes a contact portion (21), a rotating portion (22), and a connecting portion (23) connected sequentially along its length. The rotating portion (22) is rotatably connected to the rotating shaft (3), and the contact portion (21) is coupled to the stationary contact (1).

12. The circuit breaker of claim 11, wherein, The circuit breaker also includes a contact spring (8), and the moving contact (2) also includes a convex shroud (24), which is located between the rotating part (22) and the contact part (21) and extends downward. The contact spring (8) is connected to the convex shroud (24) and applies a force to the moving contact (2) close to the stationary contact (1).

13. The circuit breaker of claim 11, wherein, The contact portion (21) includes a contact seat (211) and a contact point (212). The contact seat (211) is connected to the rotating portion (22), and the contact point (212) is abutted against the bottom of the contact seat (211). The bottom of the contact seat (211) has an inwardly recessed semi-circular pit (213).

14. The circuit breaker of claim 1, wherein, The operating mechanism (6) includes a handle (63), a rocker arm (62), a jump buckle (64), a lock buckle (65), a re-lock (66), a main spring (67), and two side plates (61). The two side plates (61) are spaced apart. The rocker arm (62), the jump buckle (64), the lock buckle (65), the re-lock (66), and the main spring (67) are all located between the two side plates (61). The handle (63) is connected to the top of the rocker arm (62), and the main spring (67) is connected to the bottom of the rocker arm (62). The two ends of the rocker arm (62) are respectively connected to the two side plates (61) and can rotate relative to the two side plates (61). The lock buckle (65) and the traction rod (5) are rotatably connected to the two side plates (61). One end of the jump buckle (64) is rotatably connected to the two side plates (61), the rocker arm (62) abuts against the other end of the jump buckle (64), and the other end of the jump buckle (64) is locked to the latch (65). The re-buckle (66) includes a first hinge part (661), a fastening part (662) and a swinging part (663) connected sequentially from top to bottom. The first hinge part (661) is rotatably connected to the two side plates (61), the fastening part (662) is connected to the latch (65), and the swinging part (663) abuts against the traction rod (5). The rotation of the traction rod (5) will drive the swinging part (663) to swing and drive the latch (65) to rotate, so that the latch (65) and the jump buckle (64) are unlocked.

15. The circuit breaker of claim 14, wherein, The jump buckle (64) includes a second hinge part (641), a mating part (642) and a locking part (643) connected in sequence in the horizontal direction. The second hinge part (641) is rotatably connected to the two side plates (61). The operating mechanism (6) also includes an upper connecting rod (68) and a lower connecting rod. The upper connecting rod (68) is connected to the lower connecting rod and located above the lower connecting rod. The upper connecting rod (68) is connected to the mating part (642). The rocker arm (62) abuts against the locking part (643) and drives the locking part (643) to swing downward so that the locking part (643) is locked with the lock (65). The upper connecting rod (68) and the lower connecting rod drive the rotation of the rotating shaft (3).

16. The circuit breaker of claim 14, wherein, The rotating shaft (3) has a limiting surface (35). In the coupling state, the limiting surface (35) is located below the moving contact (2). In the electric repulsion state, the rotation of the rotating shaft (3) will drive the limiting surface (35) to move upward and abut against the moving contact (2) to prevent the moving contact (2) from rotating downward and contacting the stationary contact (1).

17. The circuit breaker as claimed in claim 1, characterized in that, The circuit breaker also includes a base (9) and a drawer-type terminal block (10). The stationary contact (1) is disposed on the base (9). The rotating shaft (3) is rotatably connected to the base (9). The base (9) has a receiving cavity (91) for installing the drawer-type terminal block (10). The receiving cavity (91) is recessed inward in the horizontal direction from the side of the base (9). The drawer-type terminal block (10) is inserted into the receiving cavity (91) in the horizontal direction and connected to the base (9).

18. The circuit breaker of claim 17, wherein, The drawer-type terminal block (10) includes a receiving part (101), a base plate (102), a side panel (103), and a snap-fit ​​part (104). The receiving part (101) is connected to the base plate (102) and extends into the receiving cavity (91). The snap-fit ​​part (104) is connected to one end of the base plate (102) near the base (9). The side panel (103) is connected to the other end of the base plate (102) away from the base (9) and extends upward. The snap-fit ​​part (104) is snapped to the base (9). The side panel (103) abuts against the side of the base (9).

19. The circuit breaker of claim 18, wherein, The inner walls of the opposite sides of the receiving cavity (91) have slots (92) extending in the horizontal direction, and the receiving part (101) has a buckle part (1011) protruding outward, which moves in the horizontal direction into the slot (92).

20. The circuit breaker of claim 1, wherein, The circuit breaker also includes an indicator component (13), the bottom of which abuts against the rotating shaft (3), and the rotating shaft (3) acts on the indicator component (13) and drives the indicator component (13) to rotate.

21. The circuit breaker of claim 20, wherein, The indicating component (13) includes a mounting bracket (132), an indicating element (131), and a reset element (133). The mounting bracket (132) is connected to the side of the operating mechanism (6). The indicating element (131) includes an indicating mark (1311), a rotating part (1312), and a stop part (1313) connected sequentially from top to bottom. The rotating part (1312) is rotatably connected to the mounting bracket (132). The stop part (1313) abuts against the rotating shaft (3). The reset element (133) is mounted on the mounting bracket (132) and abuts against the indicating element (131).

22. The circuit breaker of claim 1, wherein The circuit breaker also includes a middle cover (11) and a baffle (115). The operating mechanism (6) is disposed on the middle cover (11). The baffle (115) is slidably connected to the middle cover (11). In the electric repulsion state, the moving contact (2) rotates upward and abuts against the baffle (115) so that the baffle (115) rotates synchronously with the moving contact (2).

23. The circuit breaker of claim 22, wherein, The circuit breaker also includes a magnetic flux trip unit (14), which is vertically disposed on the middle cover (11). The bottom of the magnetic flux trip unit (14) acts on the traction rod (5) and drives the traction rod (5) to rotate, so as to release the operating mechanism (6).

24. The circuit breaker of claim 23, wherein, The magnetic flux release device (14) includes a push rod (141), an elastic element (143), a bracket (144), and an electromagnetic unit (142) disposed on the bracket (144). The bracket (144) is mounted on the middle cover (11). The top of the push rod (141) is connected to the electromagnetic unit (142), and the bottom of the push rod (141) acts on the traction rod (5). The elastic element (143) presses against the push rod (141) and the electromagnetic unit (142) and applies an upward force to the push rod (141).

25. The circuit breaker of claim 1, wherein, The stationary contact (1) includes a conductive element (111), an arc-starting plate (112), and a reflector (113). The conductive element (111) includes a conductive mounting portion (1111) and a bending portion (1112). One end of the bending portion (1112) is connected to one end of the conductive mounting portion (1111) near the moving contact (2), and the other end of the bending portion (1112) is bent upward and away from the moving contact (2). The top of the bending portion (1112) has a stationary contact point that contacts the moving contact (2). The arc-starting plate (112) is connected to one end of the bending portion (1112) away from the moving contact (2). The two ends of the reflector (113) are respectively connected to the arc-starting plate (112) and the conductive mounting portion (1111).

26. The circuit breaker of claim 25, wherein, The reflector (113) includes a connecting part (1131) and a wrapping part (1132) that are connected to each other. The connecting part (1131) is connected to the conductive mounting part (1111). The bottom of the wrapping part (1132) has a receiving groove (1133). The arc-guiding plate (112) extends from bottom to top into the receiving groove (1133).

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