Magnetic control circuit breaker with hand operating mechanism

Abstract

The magnetic control circuit breaker with hand operating mechanism comprises an operating mechanism and an electromagnetic system, the operating mechanism comprises a transmission assembly and a locking assembly; the magnetic control circuit breaker further comprises a hand operating mechanism, the hand operating mechanism comprises a rotating piece, a rotating piece spring and a control switch; the rotating piece is provided with a rotating piece trigger portion matched with the control switch, a closing driving portion matched with the transmission assembly in driving and an opening driving portion matched with the locking assembly in driving. The magnetic control circuit breaker with hand operating mechanism has the advantages that the hand operating mechanism is provided with the rotating piece capable of rotating and the control switch used for controlling the electromagnetic system, it is not necessary to judge whether the main circuit of the circuit breaker has electricity or not, and it is not necessary to additionally provide an external power supply, the rotating piece is operated to rotate to different positions to realize electric closing, manual closing and manual opening. Moreover, the rotating piece is not directly connected with the transmission assembly and is relatively independently arranged and does not participate in the automatic closing process of the circuit breaker completed by the electromagnetic system driving the transmission assembly.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a magnetically controlled circuit breaker with a manual operating mechanism. Background Technology

[0002] A low-voltage circuit breaker is a switching device that can connect and disconnect normal load current and overload current, as well as short-circuit current. Among them, magnetically controlled circuit breakers have significant application value in the field of low-voltage circuit breakers due to their advantages such as simple structure, strong anti-interference ability (no electronic components), and fast instantaneous tripping speed (purely electromagnetic).

[0003] In existing technologies, due to the characteristics of magnetically controlled circuit breakers, manual operation for opening and closing circuit breakers has many limitations. When a circuit breaker malfunctions and requires on-site installation and commissioning, it is necessary to determine whether there is current in the main circuit before closing the circuit breaker, which poses a safety hazard. Furthermore, manual closing relies entirely on manual pushing force, resulting in slow closing speeds due to the influence of human effort. Additionally, the presence of current in the circuit prolongs the mechanical vibration (chatter) time of the contacts when they close, potentially causing contact welding or erosion. Moreover, existing technologies make it difficult to manually open circuit breakers.

[0004] Therefore, there is an urgent need for a magnetically controlled circuit breaker to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to overcome at least one defect of the prior art and provide a magnetically controlled circuit breaker with a manual operating mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A magnetically controlled circuit breaker with a manual operating mechanism includes an operating mechanism and an electromagnetic system. The operating mechanism includes a transmission component and a locking component that limits the movement of the transmission component. The electromagnetic system drives a moving contact through the transmission component. When the electromagnetic system is energized, it drives the transmission component, which in turn drives the moving contact and the stationary contact to make contact. The locking component limits the movement of the transmission component. When the locking component is released from limiting the movement of the transmission component by the tripping driving force, the moving contact and the stationary contact separate. The magnetically controlled circuit breaker also includes a manual operating mechanism, which includes a rotating component, a rotating component spring, and a control switch.

[0008] The rotating component is provided with a rotating component triggering part that cooperates with the control switch, a closing drive part that cooperates with the transmission component, and a closing drive part that cooperates with the locking component. The rotating component is rotatably arranged, and when it rotates along the closing direction, it passes through the electric closing position and the manual closing position in sequence from the initial position. When the rotating component is in the electric closing position, the rotating component triggering part triggers the control switch to control the electromagnetic system to be energized. When it is in the manual closing position, the closing drive part acts on the transmission component to drive the moving contact and the stationary contact to make contact.

[0009] When the rotating component rotates from the initial position to the open position along the opening direction opposite to the closing direction, it drives the opening drive unit to act on the locking assembly to provide the locking assembly with the opening drive force.

[0010] The spring of the rotating component is connected to the rotating component and is used to drive the rotating component to rotate to the initial position.

[0011] Optionally, the transmission assembly includes a movable shaft linearly mounted on the support of the operating mechanism and a pull rod connected between the movable shaft and the moving iron core of the electromagnetic system. The pull rod is provided with a pull rod driven part that drives and cooperates with the closing drive unit.

[0012] The locking assembly includes a latch and a traction rod respectively rotatably mounted on the bracket. The traction rod is provided with a fourth trigger part that drives and cooperates with the tripping drive part. When the circuit breaker is closed, the traction rod, latch, and moving shaft are sequentially limited. When the rotating part is in the tripping position, it drives the tripping drive part to act on the fourth trigger part to provide tripping driving force to the traction rod, so that the traction rod releases the limit on the latch, and then the latch releases the limit on the moving shaft.

[0013] Optionally, the operating mechanism further includes a return spring, a bracket, a latch spring and a traction rod spring respectively connected to the latch and the traction rod, and the traction rod is provided with a roller, which is rotatably mounted;

[0014] When the electromagnetic system is energized, it drives the moving shaft to move from the first position to the second position. The moving shaft drives the moving contact and the stationary contact to make contact. At the same time, it drives the return spring to store energy. The moving shaft releases the limit on the latch, causing the latch to rotate from the first position to the second position under the drive of the latch spring. The latch then limits the moving shaft to the second position and prevents it from moving back to the first position. Simultaneously, the latch releases the limit on the roller, causing the traction rod to rotate from the first position to the second position under the drive of the traction rod spring. This again limits the latch to the second position and prevents it from rotating back to the first position.

[0015] When the traction rod is driven by the tripping drive force to overcome the force of the traction rod spring and rotate from the second position to the first position, the traction rod drives the roller to release the limit on the latch, thereby the return spring releases energy and drives the moving contact and stationary contact to separate. At the same time, the return spring drives the moving shaft from the second position to the first position. The moving shaft drives the latch to overcome the force of the latch spring and rotate from the second position to the first position, and limits the latch to the first position and prevents it from rotating to the second position. In turn, the latch, through the roller, limits the traction rod to the first position and prevents it from rotating to the second position.

[0016] Optionally, the end of the latch away from the electromagnetic system is provided with a latch rotating part rotatably mounted on the bracket, and the other end of the latch near the electromagnetic system is provided with a latch limiting part that respectively limits and cooperates with the roller and the moving shaft. The latch limiting part is provided with a first latch limiting surface and a first latch mating surface that respectively limit and cooperates with the moving shaft, and a second latch limiting surface and a second latch mating surface that respectively limit and cooperates with the roller.

[0017] When the movable shaft is in the first position, the latch is fixed in the first position by acting on the first latch mating surface, and the latch acts on the roller through the second latch limiting surface to fix the traction rod in the first position.

[0018] When the traction rod is in the second position, the roller acts on the second locking mating surface to limit the locking in the second position, and the locking acts on the moving shaft through the first locking limiting surface to limit the moving shaft in the second position.

[0019] Optionally, the operating mechanism is located above the moving contact and the stationary contact in the second direction. The moving iron core, the moving shaft, and the pull rod of the electromagnetic system are synchronously moved and linearly moved along the first direction. The rotation center of the latch, the traction rod, the moving contact, and the axis of the moving shaft are respectively arranged along the third direction and are parallel to each other and spaced apart. The first direction, the second direction, and the third direction are perpendicular to each other.

[0020] The electromagnetic system is located on one side of the support of the operating mechanism in the first direction and above the moving contact and stationary contact in the second direction;

[0021] The rotating component is rotatably mounted on the support of the operating mechanism and is located above the support in the second direction. The rotation center of the rotating component is set along the second direction. The control switch is located on the same side of the rotating component and the support in the third direction.

[0022] Optionally, it also includes a housing and a cover plate, wherein the housing has an installation chamber; the cover plate includes a cover plate body, the electromagnetic system is installed in the installation chamber, the cover plate body is closed and connected to the opening of the installation chamber, the cover plate body extends along a first direction and has a cover plate extension, and the control switch is installed on the cover plate extension.

[0023] Optionally, the moving contact is disposed on the rotating shaft, and the transmission assembly further includes a connecting rod, which is driven between the moving shaft and the rotating shaft. One end of the pull rod and the connecting rod are respectively hinged to the moving shaft, the other end of the pull rod is fixedly connected to the moving iron core of the electromagnetic system, and the other end of the connecting rod and the rotating shaft are respectively hinged to the transmission shaft.

[0024] Optionally, the rotating component includes a rotating component body, which is a flat plate structure perpendicular to the rotation center direction of the rotating component. The side of the rotating component body extends with three protruding structures arranged sequentially and at intervals around the rotation center of the rotating component. These three protruding structures serve as the rotating component trigger part, closing drive part, and opening drive part in sequence.

[0025] Optionally, the manual operating mechanism further includes an operating component for manual operation, the operating component being fixedly connected to the rotating component and rotating synchronously with the rotating component on the same axis.

[0026] Optionally, the magnetically controlled circuit breaker includes a trip unit, and the traction rod is provided with a first trigger part that cooperates with the trip unit. When the trip unit acts on the first trigger part, it provides a tripping driving force to the traction rod.

[0027] And / or, the magnetically controlled circuit breaker includes a trip button, and the traction rod is provided with a second trigger part that cooperates with the trip button. When the trip button acts on the second trigger part, it provides a tripping driving force to the traction rod.

[0028] And / or, the magnetically controlled circuit breaker includes a short-circuit protection mechanism, and the traction rod is provided with a third trigger part that cooperates with the short-circuit protection mechanism. When the short-circuit protection mechanism acts on the third trigger part, it provides a tripping driving force to the traction rod.

[0029] This invention relates to a magnetically controlled circuit breaker with a manual operating mechanism. The mechanism includes a rotatable rotating component and a control switch for controlling the electromagnetic system. It eliminates the need to determine if the main circuit of the circuit breaker is energized, and requires no external power supply. By rotating the rotating component to different positions, electric closing, manual closing, and manual opening are achieved. If power is available to the electromagnetic system, the rotating component triggers the control switch, controlling the electromagnetic system to drive the circuit breaker for electric closing, resulting in fast closing speed. If no power is available, the rotating component drives the transmission assembly via the closing drive to complete the manual closing of the circuit breaker. Since no current flows through the circuit, contact welding and erosion are avoided. The rotating component drives the locking assembly via the opening drive to release the limit on the transmission assembly, completing the manual opening of the circuit breaker. Furthermore, the rotating component is not directly connected to the transmission assembly; it is relatively independent and does not participate in the automatic closing process driven by the electromagnetic system. This simplifies the operation and structure, making manual and automatic closing relatively independent and non-interfering, thus increasing reliability.

[0030] In addition, the electromagnetic driving force of the electromagnetic system drives the moving contact to contact and separate from the stationary contact through the moving shaft. The circuit breaker is stabilized in the closed state by the rollers, latches and moving shaft on the traction rod in the forward direction and in the open state by the reverse direction, so as to realize the opening and closing of the magnetically controlled circuit breaker, reduce the number of parts, simplify the structure of the operating mechanism and improve the reliability of the movement. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the circuit breaker of this utility model;

[0032] Figure 2 This is a perspective view of the circuit breaker of this utility model with the face cover removed;

[0033] Figure 3 This is a schematic diagram of the circuit breaker removal control system and the cover of this utility model;

[0034] Figure 4 This is a cross-sectional view of the circuit breaker with the face cover removed when the circuit is closed according to this utility model;

[0035] Figure 5 This is a schematic diagram of the manual operating mechanism, electromagnetic system, operating mechanism and conductive system of this utility model when closing the circuit;

[0036] Figure 6 This is a cross-sectional view of the operating mechanism, rotating shaft, moving contact, and stationary contact of this utility model when the circuit is closed;

[0037] Figure 7 This is a cross-sectional view of the operating mechanism, rotating shaft, moving contact, and stationary contact of this utility model when the circuit breaker is tripped;

[0038] Figure 8 This is a schematic diagram of the electromagnetic system, trip unit, trip button, operating mechanism, rotating shaft, moving contact and stationary contact of this utility model when the circuit is tripped;

[0039] Figure 9 This is a schematic diagram of the electromagnetic system and operating mechanism of this utility model;

[0040] Figure 10 This is a schematic diagram of the operating mechanism of this utility model;

[0041] Figure 11 This is a schematic diagram of the rotating component of this utility model;

[0042] Figure 12 This is a schematic diagram of the structure of the operating component of this utility model;

[0043] Figure 13 This is a perspective view of the latch of this utility model;

[0044] Figure 14 This is a structural schematic diagram of the bracket of this utility model;

[0045] Figure 15 This is a schematic diagram of the traction rod of this utility model from one perspective;

[0046] Figure 16 This is a schematic diagram of the traction rod of this utility model from another perspective;

[0047] Figure 17 This is a front view of the latch of this utility model;

[0048] Figure 18 This is a schematic diagram of the electromagnetic system, trip unit, trip button, operating mechanism, rotating shaft, moving contact and stationary contact of this utility model when the circuit is closed;

[0049] Figure 19 This is a schematic diagram of the circuit breaker during the closing process of this utility model, showing the moving shaft in the second position of the moving shaft;

[0050] Figure 20 This is a schematic diagram of the circuit breaker during the closing process of this utility model, showing the moving shaft in the third position.

[0051] Operating mechanism 1; Housing 2; Base 21; Middle seat 22; Face cover 23; Middle seat hook 24; Mounting chamber 25; Rotating shaft 3; Return spring 31; Contact spring 32; Moving contact 41; Stationary contact 42; First connecting plate 43; Second connecting plate 44; Trip device 5; Push rod 51; Opening button 6; Short circuit protection mechanism 7; Magnetic yoke 71; Armature 72; Armature spring 73; Control system 8;

[0052] Bracket 100; Locking rotating shaft 101; Traction rod rotating shaft 102; Rotating component rotating shaft 103; Bracket side plate 110; Bracket limiting surface 111; Guide hole 112; First mounting hole 113; Second mounting hole 114; Third mounting hole 115; Bracket top plate 120; First bracket stop part 121; Bracket fixing foot 130; Bracket hanging hole 140; Second bracket stop part 150;

[0053] Electromagnetic system 200; movable shaft 210; pull rod 220; pull rod driven part 221; pull rod body 222; pull rod connecting part 223; indicator 224; moving iron core 230; stationary iron core 240; coil 250;

[0054] Connecting rod 300; Drive shaft 301;

[0055] 400; 401; 410; 411; 412; 414; 430; 431; 432; 440; 460; 470; 480; 49; 400; 400; 400; 470; 480;

[0056] 500; 501; 502; 503; 510; 520; 521; 530; 540; 550; 560; 570; 580; 590;

[0057] Rotating component 600; Rotating component spring 601; Opening drive unit 610; Rotating component hook 620; Rotating component trigger unit 630; Closing drive unit 640; Rotating component body 650; Rotating component rotating hole 651; Rotating component mounting hole 652; Operating component 700; Operating component body 710; Operating hole 711; Operating component flange 720; Operating component boss 730; Control switch 800;

[0058] Cover plate 900; cover plate body 910; cover plate extension 920; cover plate buckle 930; cover plate positioning post 940. Detailed Implementation

[0059] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the magnetically controlled circuit breaker with a manual operating mechanism of this utility model. The magnetically controlled circuit breaker with a manual operating mechanism of this utility model is not limited to the descriptions in the following embodiments.

[0060] like Figure 1-5As shown, the magnetically controlled circuit breaker with a manual operating mechanism in this embodiment includes a housing 2, a rotating shaft 3 disposed within the housing 2, at least one phase conductive system, a control system 8, an electromagnetic system 200, and an operating mechanism 1. The housing 2 includes a base 21, a middle seat 22, and a face cover 23 that are sequentially connected and fitted together. The base 21, the middle seat 22, and the face cover 23 can be fixedly connected by screws, snap-fit ​​connections, or other methods. Each phase conductive system includes a moving contact 41 disposed on the rotating shaft 3, a stationary contact 42 disposed opposite to the moving contact 41, and a first connecting plate 43 and a second connecting plate 44 electrically connected to the moving contact 41 and the stationary contact 42, respectively. In this embodiment, the stationary contact 42 and the second connecting plate 44 are integrally connected. Of course, in other embodiments, the stationary contact 42 and the second connecting plate 44 can also be separately disposed, and the stationary contact 42 and the second connecting plate 44 can be fixedly connected by welding, screws, or other methods.

[0061] In this embodiment, the magnetically controlled circuit breaker includes a shaft spring connected to the shaft 3 and used to reset the shaft 3, and a contact spring 32 connected between the shaft 3 and the moving contact 41 and used to provide final pressure for the contact between the moving contact 41 and the stationary contact 42. The shaft spring is a tension spring, but it can also be a torsion spring, compression spring, etc.; the contact spring 32 is a torsion spring, but it can also be a tension spring, compression spring, etc.

[0062] like Figure 4-7 As shown, the operating mechanism 1 in this embodiment includes a transmission component and a locking component that limits the transmission component; the electromagnetic system 200 drives the moving contact 41 through the transmission component. When the electromagnetic system 200 is energized, it drives the transmission component, which drives the moving contact 41 and the stationary contact 42 to contact, thereby closing the circuit breaker. The locking component limits the transmission component. When the locking component is driven by the opening driving force and releases the limit on the transmission component, the moving contact 41 and the stationary contact 42 separate, thereby opening the circuit breaker.

[0063] Specifically, the magnetically controlled circuit breaker also includes a manual operating mechanism, which includes a rotating component 600, a rotating component spring 601, and a control switch 800.

[0064] The rotating component 600 is equipped with a rotating component triggering part 630 that cooperates with the control switch 800, a closing drive part 640 that cooperates with the transmission assembly, and a opening drive part 610 that cooperates with the locking assembly. The rotating component 600 is rotatably configured, and when rotating in the closing direction, it sequentially passes through an electric closing position and a manual closing position from its initial position. When the rotating component 600 is in the electric closing position, the rotating component triggering part 630 triggers the control switch 800 to output a closing signal to the electromagnetic system 200. When the rotating component 600 is in the manual closing position, the closing drive part 640 acts on the transmission assembly to drive the moving contact 41 and the stationary contact 42 to contact. Figure 3As shown, during manual closing, when power is supplied to the electromagnetic system 200, the rotating component 600 is manually rotated. When the rotating component 600 rotates from the initial position to the electrically closed position in the closing direction (i.e., clockwise in the diagram), the rotating component triggering part 630 triggers the control switch 800 to energize the electromagnetic system 200. This causes the electromagnetic system 200 to drive the transmission assembly, which in turn drives the moving contact 41 and the stationary contact 42 to contact, achieving electrically closed circuit breaker. This process avoids the influence of human factors on the closing speed, resulting in a faster closing speed. Figure 3 As shown, during the manual closing process, when there is no power supply to the electromagnetic system 200, the rotating part 600 is manually rotated. When the rotating part 600 rotates from the initial position to the electric closing position in the closing direction (i.e., clockwise in the figure), the rotating part triggering part 630 triggers the control switch 800. However, since the electromagnetic system 200 is de-energized, it cannot drive the circuit breaker to close electrically. When the rotating part 600 continues to rotate clockwise to the manual closing position, the closing driving part 640 acts on the transmission component to drive the moving contact 41 and the stationary contact 42 to contact, so that the circuit breaker can be manually closed without relying on power.

[0065] like Figure 3 As shown, when the rotating component 600 is manually rotated, the rotating component 600 rotates from the initial position to the open position in the opening direction opposite to the closing direction (i.e., counterclockwise direction in the figure). This drives the opening drive unit 610 to act on the locking component, providing the locking component with the opening driving force. This drives the locking component to release the limit on the transmission component, causing the moving contact 41 and the stationary contact 42 to separate, thus realizing the manual opening of the circuit breaker.

[0066] The rotating spring 601 is connected to the rotating component 600. The rotating spring 601 is used to drive the rotating component 600 to rotate to the initial position. That is, the rotating spring 601 can drive the rotating component 600 to rotate from the electric closing position, the manual closing position, and the opening position to the initial position.

[0067] It should be noted that the control switch 800 is usually a micro switch, which can be connected in series in the power supply circuit of the electromagnetic system 200. When the control switch 800 is closed, it connects the power supply circuit of the electromagnetic system 200 to control the electromagnetic system 200 to be energized; or it can be electrically connected to the control circuit of the electromagnetic system 200. When the control switch 800 is closed, it outputs a closing signal to the control circuit of the electromagnetic system 200 to control the electromagnetic system 200 to be energized.

[0068] This embodiment of the magnetically controlled circuit breaker with a manual operating mechanism includes a rotatable rotating component 600 and a control switch 800 for controlling the electromagnetic system 200. It does not require determining whether the main circuit of the circuit breaker is energized, nor does it require an external power supply. By operating the rotating component 600 to different positions, electric closing, manual closing, and manual opening are performed. If power is supplied to the electromagnetic system 200, the rotating component 600 triggers the control switch 800 via the rotating component trigger part 630 to control the electromagnetic system 200 to drive the circuit breaker for electric closing, resulting in fast closing speed. If no power is supplied to the electromagnetic system 200, the rotating component 600 drives the transmission assembly via the closing drive part 640 to complete the manual closing of the circuit breaker. Since no current flows through the circuit, contact welding and erosion are avoided. The rotating component 600 drives the locking assembly via the opening drive part 610 to release the limit on the transmission assembly, completing the manual opening of the circuit breaker. Moreover, the rotating component 600 is not directly connected to the transmission assembly and is set up relatively independently. It does not participate in the automatic closing process of the circuit breaker completed by the transmission assembly driven by the electromagnetic system 200, thereby simplifying the action relationship and the structure, making manual and automatic closing relatively independent and non-interfering with each other, which is more reliable.

[0069] Furthermore, the transmission assembly of this embodiment includes a movable shaft 210 linearly mounted on the bracket 100 of the operating mechanism 1, and a pull rod 220 connected between the movable shaft 210 and the moving iron core 230 of the electromagnetic system 200. The pull rod 220 is provided with a pull rod driven part 221 that drives and cooperates with the closing drive part 640. The locking assembly of this embodiment includes a latch 400 and a traction rod 500 respectively rotatably mounted on the bracket 100. The traction rod 500 is provided with a fourth trigger part that drives and cooperates with the opening drive part 610. When the circuit breaker is closed, the traction rod 500, the latch 400, and the movable shaft 210 are sequentially limited. When the rotating part 600 is in the opening position, it drives the opening drive part 610 to act on the fourth trigger part to provide opening driving force to the traction rod 500, so that the traction rod 500 releases the limitation on the latch 400, and then the latch 400 releases the limitation on the movable shaft 210.

[0070] like Figure 4-10 As shown, the operating mechanism 1 of the magnetically controlled circuit breaker in this embodiment further includes a return spring 31, a bracket 100, a latch spring 401 and a traction rod spring 501 respectively connected to the latch 400 and the traction rod 500, and a roller 502 is provided on the traction rod 500, which is rotatably disposed. The return spring 31 is a pivot spring. In other embodiments, the return spring 31 may also be connected to the moving shaft 210 or other components.

[0071] like Figure 4-6As shown, when the control system 8 sends a closing signal, the control electromagnetic system 200 is energized. When the electromagnetic system 200 is energized, it drives the moving shaft 210 from the first position to the second position. The moving shaft 210 drives the moving contact 41 and the stationary contact 42 to contact, and simultaneously drives the reset spring 31 to store energy. The moving shaft 210 also releases the limit on the latch 400 (opening lock released), causing the latch 400 to rotate from the first position to the second position under the drive of the latch spring 401. The latch 400 then limits the moving shaft 210. When the moving shaft is in the second position and cannot move to the first position, the latch 400 simultaneously releases the limit on the roller 502, causing the traction rod 500 to rotate from the first position to the second position under the drive of the traction rod spring 501. This causes the roller 502 to limit the latch 400 to the second position and prevent it from rotating to the first position. At this time, the circuit breaker closes. The closing and locking are achieved by the roller 502 on the traction rod 500, the latch 400, and the moving shaft 210 in sequence, keeping the reset spring 31 in the energy storage state.

[0072] like Figure 7 As shown, when the traction rod 500 is driven by the opening driving force to overcome the force of the traction rod spring 501 and rotates from the second position to the first position, the traction rod 500 drives the roller 502 to release the limit on the latch 400 (closing lock release), thereby the return spring 31 releases energy to drive the moving contact 41 and the stationary contact 42 to separate. At the same time, the return spring 31 drives the moving shaft 210 from the second position to the first position, and the moving shaft 210 drives the latch 400 to overcome the force of the latch spring 401. The force rotates the latch from the second position to the first position, limiting the latch 400 to the first position and preventing it from rotating to the second position. The latch 400, through the roller 502, then limits the traction rod 500 to the first position, preventing it from rotating to the second position. At this time, the circuit breaker opens. The opening is locked by the sequential limiting of the moving shaft 210, the latch 400, and the roller 502 on the traction rod 500, keeping the traction rod spring 501 and the latch spring 401 in an energy-storing state. In this embodiment of the magnetically controlled circuit breaker, the electromagnetic driving force of the electromagnetic system 200 drives the moving contact 41 to contact and separate from the stationary contact 42 via the moving shaft 210. The roller 502 on the traction rod 500, the latch 400, and the moving shaft 210 sequentially limit the circuit breaker in the closed state in the forward direction and in the open state in the reverse direction, thus realizing the opening and closing of the magnetically controlled circuit breaker, reducing the number of parts, simplifying the structure of the operating mechanism 1, and improving the reliability of the operation.

[0073] It should be noted that the control system 8 and the electromagnetic system 200 are existing technologies. The electromagnetic system 200 typically includes a moving iron core 230, a stationary iron core 240, and a coil 250. The moving iron core 230 and the stationary iron core 240 are arranged opposite to each other, and the coil 250 is located within the space enclosed by the moving iron core 230 and the stationary iron core 240. The control switch 800 or the control system 8 energizes the coil 250, magnetizing the stationary iron core 240, causing the moving iron core 230 to move towards the stationary iron core 240 until it is attracted to the stationary iron core 240. The moving iron core 230 drives the moving shaft 210 from a first position to a second position.

[0074] Furthermore, in this embodiment, the electromagnetic system 200 operates momentarily; after closing, the coil 250 is de-energized, and the electromagnetic system 200 provides closing overtravel for the moving shaft 210. For example... Figure 4-6 As shown, during the circuit breaker closing process, the coil 250 of the electromagnetic system 200 is energized first, and the moving iron core 230 drives the moving shaft 210 from the first position to the second position (e.g., ...). Figure 19 At this point, there is still some margin in the closing stroke, and the moving iron core 230 drives the moving shaft 210 to continue moving to the third position of the moving shaft (e.g., Figure 20 That is, the closing stroke of the moving shaft 210 is from the first position to the second position, and the closing stroke margin is from the second position to the third position. This closing stroke margin ensures that the latch 400 and the traction rod 500 can reliably reset. After the latch spring 401 drives the latch 400 to reset to the second position and the traction rod spring 501 drives the traction rod 500 to reset to the second position, the coil 250 of the electromagnetic system 200 is de-energized, causing the reset spring 31 to drive the moving shaft 210 from the third position to the second position (e.g., ...). Figure 4-6 Since this embodiment also includes a contact spring 32, after the coil 250 of the electromagnetic system 200 is de-energized, the reset spring 31 and the contact spring 32 jointly drive the moving shaft 210 from the third position to the second position (e.g., ...). Figure 4-6 ).

[0075] like Figure 4 , 13 As shown, the end of the latch 400 away from the electromagnetic system 200 is provided with a latch rotating part 430 rotatably mounted on the bracket 100, and the other end of the latch 400 near the electromagnetic system 200 is provided with a latch limiting part 410 that respectively limits and cooperates with the roller 502 and the moving shaft 210. The latch limiting part 410 is provided with a first latch limiting surface and a first latch mating surface 412 that respectively limit and cooperate with the moving shaft 210, and a second latch limiting surface and a second latch mating surface 414 that respectively limit and cooperate with the roller 502.

[0076] like Figure 7 As shown, when the moving shaft 210 is in the first position, the latch 400 is limited to the first position by acting on the first latch mating surface 412, and the latch 400 is limited to the first position by acting on the roller 502 through the second latch limiting surface.

[0077] like Figure 4-6 As shown, when the traction rod 500 is in the second position, the roller 502 acts on the second locking mating surface 414 to limit the latch 400 to the second position, and the latch 400 acts on the moving shaft 210 through the first locking limiting surface to limit the moving shaft 210 to the second position. Since the rotation center of the latch 400 is located at the end of the latch 400 away from the electromagnetic system 200, and the limiting mating structure of the latch 400 with the roller 502 and the moving shaft 210 is located at the other end of the latch 400 near the electromagnetic system 200, when the circuit is closed, the moving shaft 210 moves away from the rotation center of the latch 400, so that the torque of the moving shaft 210 increases during the process of driving the latch 400, which means that the resistance of the moving shaft 210 decreases, solving the problem of insufficient closing driving force and improving the closing reliability; moreover, the latch 400 and the moving shaft 210... 10. The roller 502 limiting fit structure is simple, reducing the requirements for manufacturing and assembly precision; moreover, in this embodiment, the roller 502 of the traction rod 500 and the second locking limiting surface and the second locking mating surface 414 of the locking buckle 400 cooperate to achieve mechanical locking, eliminating the need to set up additional independent locking parts (such as separate jump buckles, re-fasteners, etc.) between the locking buckle 400 and the traction rod 500, simplifying the number of parts, greatly improving the problem of the complexity of the structure of the operating mechanism 1 and the high requirements for assembly precision, and can significantly improve the reliability and stability of the product.

[0078] In this embodiment, as Figure 7 As shown, when the circuit breaker is in the open state, the moving shaft 210 is in the first position, that is, the moving shaft 210 is in contact with the first latching surface 412. During the circuit breaker closing process, the moving shaft 210 first moves to the left along the first latching surface 412 and disengages from the first latching surface 412, after which the moving shaft 210 is in the second position (e.g., ...). Figure 19 That is, the moving shaft 210 contacts the first locking limit surface. At this time, since the closing stroke of the moving shaft 210 driven by the electromagnetic system 200 still has a margin, the moving shaft 210 will continue to move to the left to the third position of the moving shaft (e.g., Figure 20 That is, the moving shaft 210 is spaced apart from the first locking limiting surface; then, after the coil 250 of the electromagnetic system 200 is de-energized, the return spring 31 drives the moving shaft 210 from the third position to the right to the second position (e.g., Figure 4-6 That is, the moving shaft 210 contacts the first locking limiting surface.

[0079] Furthermore, such as Figure 13 , 17 As shown, the first latch mating surface 412, the first latch limiting surface, the second latch limiting surface, and the second latch mating surface 414 are connected in sequence. The first latch mating surface 412 and the first latch limiting surface are connected at an angle, and the second latch limiting surface and the second latch mating surface 414 are connected at an angle. The first latch limiting surface and the second latch limiting surface are coplanar to form a common latch limiting surface 411, that is, the common latch limiting surface 411 serves as the first latch limiting surface and the second latch limiting surface. The two ends of the common latch limiting surface 411 are connected at an angle to the first latch mating surface 412 and the second latch mating surface 414, respectively. The locking latch 400, the movable shaft 210, and the roller 502 are connected by multiple planes at an included angle. This structure is very simple and easy to manufacture. Furthermore, the first and second locking latching surfaces of the locking latch 400, which are used to limit the movable shaft 210 and the roller 502 respectively, are coplanar, reducing the structural complexity of the locking latch 400 and further simplifying its structure. Preferably, the included angle between the shared locking latching surface 411 and the first locking latching mating surface 412 is rounded, allowing the movable shaft 210 to slide more smoothly between the shared locking latching surface 411 and the first locking latching mating surface 412; similarly, the included angle between the shared locking latching surface 411 and the second locking latching mating surface 414 is rounded, allowing the roller 502 to slide more smoothly between the shared locking latching surface 411 and the second locking latching mating surface 414.

[0080] like Figure 9-10 As shown in Figures 13-14, the latch 400 is provided with a first latch positioning part 470, and the bracket 100 is provided with a first bracket stop part 121. The first bracket stop part 121 and the first latch positioning part 470 are mutually limiting and cooperating to position the latch 400 in the second latch position; Figure 4-6 As shown, when the locking spring 401 drives the locking latch 400 to rotate from the first locking position to the second locking position, the locking latch 400 causes the first locking latch positioning part 470 to stop at the first bracket stop part 121, thus positioning the locking latch 400 in the second locking position. The first bracket stop part 121 and the first locking latch positioning part 470 cooperate to limit and position the locking latch 400, making the closing lock more stable and reliable.

[0081] like Figure 13-14As shown, the latch 400 has second latch positioning portions 480 protruding from both sides along the rotation center direction of the latch 400. The bracket 100 has two bracket limiting surfaces 111, which respectively engage with the second latch positioning portions 480 on both sides of the latch 400 to limit the latch 400 between the two bracket limiting surfaces 111 in the rotation center direction of the latch 400. The bracket limiting surfaces 111 engage with the second latch positioning portions 480 to position and limit the latch 400, preventing the latch 400 from shifting in the rotation center direction of the latch 400.

[0082] like Figure 9-10 As shown in Figure 14, the bracket 100 is provided with a guide hole 112. The movable shaft 210 is slidably inserted into the guide hole 112 along its length. The outer diameter of the movable shaft 210 is the same as the width of the guide hole 112 and smaller than the length of the guide hole 112. The guide hole 112 is preferably an oblong hole. The guide hole 112 on the bracket 100 serves to guide and limit the movement of the movable shaft 210. Because the movable shaft 210 is limited in the width direction of the guide hole 112 and will not deviate, the tripping lock is more stable and reliable.

[0083] like Figure 9-10 As shown in Figures 14-16, the traction rod 500 is provided with a traction rod positioning part, and the bracket 100 is provided with a second bracket stop part 150. The second bracket stop part 150 is in a limiting cooperation with the traction rod positioning part to position the traction rod 500 in the second position of the traction rod; Figure 3-4 As shown, when the traction rod spring 501 drives the traction rod 500 to rotate from the first position to the second position, the traction rod 500 causes the traction rod positioning part to stop at the second bracket stop 150, thus positioning the traction rod 500 at the second position. The second bracket stop 150 cooperates with the traction rod positioning part to limit and position the traction rod 500, making the closing lock more stable and reliable.

[0084] In this embodiment, the magnetically controlled circuit breaker achieves manual tripping via a rotating component 600, such as... Figure 3 , 7As shown, manually operating the rotating component 600 causes it to rotate counterclockwise from its initial position to the open position. Simultaneously, the rotating component 600 drives the rotating component spring 601 to store energy. At the same time, the open driving part 610 of the rotating component 600, acting on the fourth trigger part, provides an open driving force to the traction rod 500. That is, the open driving part 610, acting on the fourth trigger part, drives the traction rod 500 to overcome the force of the traction rod spring 501 and rotate from the second position to the first position. The traction rod 500 causes the roller 502 to disengage from the second locking mating surface 414 to release the limit on the locking buckle 400. Consequently, the locking buckle 400 releases the limit on the moving shaft 210. At this time, the closing lock is released, causing the reset spring 31 to... The release of energy drives the moving contact 41 and the stationary contact 42 to separate, realizing the circuit breaker tripping. The reset spring 31 simultaneously drives the moving shaft 210, the latch 400 and the roller 502 on the traction rod 500 to be sequentially limited to achieve tripping and locking. After the circuit breaker completes tripping, the operating force on the rotating part 600 is removed. Driven by the rotating part spring 601, the rotating part 600 rotates clockwise from the tripping position to the initial position, causing the tripping drive part 610 to separate from the fourth trigger part of the traction rod 500. Since the moving shaft 210, the latch 400 and the roller 502 on the traction rod 500 are sequentially limited after the circuit breaker trips, the traction rod 500 can still overcome the force of the traction rod spring 501 and remain in the first position of the traction rod.

[0085] like Figure 4-5 As shown in Figures 8 and 15-16, the magnetically controlled circuit breaker of this embodiment also has other tripping methods. The magnetically controlled circuit breaker of this embodiment includes a trip unit 5 and / or a tripping button 6 and / or a short-circuit protection mechanism 7, which are used to provide tripping driving force for the traction rod 500. The rotating member 600 is rotatably mounted on the bracket 100, and the rotating member 600 is provided with a tripping driving part 610. The traction rod 500 is provided with a first triggering part that cooperates with the trip unit 5, and / or a second triggering part that cooperates with the tripping button 6, and / or a third triggering part that cooperates with the short-circuit protection mechanism 7.

[0086] The trip unit 5 is existing technology and is typically a flux trip unit. For example... Figure 7 As shown, in this embodiment, the magnetically controlled circuit breaker achieves remote tripping via the trip unit 5. When the control system 8 sends a tripping signal, it triggers the trip unit 5. The trip unit 5 acts on the first triggering part to provide a tripping driving force to the traction rod 500. That is, the top rod 51 of the trip unit 5 drives the traction rod 500 to overcome the force of the traction rod spring 501 and rotate counterclockwise from the second position to the first position of the traction rod. The subsequent operation process is the same as the manual tripping driven by the rotating part 600 described above, and will not be repeated here. In this embodiment, the trip unit 5 is installed on the middle seat 22 of the housing 2 and is located on one side of the traction rod 500.

[0087] In this embodiment, the magnetically controlled circuit breaker is manually tripped via the trip button 6, which is typically used for testing. Figure 7 As shown, when the manual operation of the trip button 6 is activated, it provides a tripping driving force to the traction rod 500 when acting on the second trigger. This drives the traction rod 500 to rotate counterclockwise from the second position to the first position, overcoming the force of the traction rod spring 501. The subsequent operation is the same as the manual tripping driven by the rotating component 600 described above, and will not be repeated here. In this embodiment, the trip button 6 is linearly movable and mounted on the cover 23 of the housing 2, located above the second trigger.

[0088] The short-circuit protection mechanism 7 is existing technology, typically including a magnetic yoke 71, a rotatably mounted armature 72, and an armature spring 73 connecting the magnetic yoke 71 and the armature 72. In this embodiment, the magnetically controlled circuit breaker achieves short-circuit tripping protection through the short-circuit protection mechanism 7. Figure 7 As shown, when a short circuit fault occurs in the circuit breaker, the short circuit protection mechanism 7 provides a tripping driving force to the traction rod 500 when it acts on the third trigger. That is, the armature 72 of the short circuit protection mechanism 7 rotates clockwise against the force of the armature spring 73. The armature 72 drives the traction rod 500 to rotate counterclockwise from the second position to the first position of the traction rod against the force of the traction rod spring 501 through the third trigger. The subsequent action process is the same as the manual tripping driven by the rotating part 600, and will not be described again here. In this embodiment, the short circuit protection mechanism 7 is located below the traction rod 500; the conductive system also includes a conductive structure connected in series between the moving contact 41 and the first connecting plate 43. The magnetic yoke 71 is fixedly installed on the base 21 of the housing 2, and the conductive structure passes at least partially through the cavity formed by the magnetic yoke 71 and one end of the armature 72. The other end of the armature 72 extends upward to be spaced opposite to the third trigger.

[0089] The magnetically controlled circuit breaker in this embodiment is a three-phase circuit breaker, meaning it has a three-phase conductive system. Each phase of the conductive system is equipped with a short-circuit protection mechanism 7, resulting in a total of three short-circuit protection mechanisms 7. Correspondingly, the traction rod 500 is equipped with three third triggering parts for each of the three short-circuit protection mechanisms 7.

[0090] like Figure 2-8As shown, the operating mechanism 1 is located above the moving contact 41 and the stationary contact 42 in the second direction. The moving iron core 230, the moving shaft 210, and the pull rod 220 of the electromagnetic system 200 are synchronously moved and linearly moved along the first direction. The rotation centers of the latch 400, the traction rod 500, the roller 502, the moving contact 41, and the axis of the moving shaft 210 are respectively arranged along the third direction and are parallel and spaced apart from each other. The electromagnetic system 200 is located on one side of the support 100 of the operating mechanism 1 in the first direction and above the moving contact 41 and the stationary contact 42 in the second direction. The rotating component 600 is rotatably mounted on the support 100 of the operating mechanism 1 and is located above the support 100 in the second direction. The rotation center of the rotating component 600 is arranged along the second direction. The control switch 800 is located on the same side of the rotating component 600 and the support 100 in the third direction and is located below the control system 8 in the second direction. The first direction, the second direction, and the third direction are perpendicular to each other. The first direction is... Figure 2-4 In sections 6-7, the X direction refers to the length direction of the circuit breaker; the second direction is... Figure 2-4 In sections 6-7, the Y direction refers to the height of the circuit breaker; the third direction is... Figure 2-3 In the Z-direction, Figure 4 , 6 -7 The direction perpendicular to the drawing is also the width direction of the circuit breaker. The operating mechanism 1, electromagnetic system 200, rotating part of the manual operating mechanism 600 and control switch 800 are reasonably and compactly arranged to save space.

[0091] Furthermore, the axis of the moving shaft 210, the rotation center of the roller 502, and the rotation center of the moving contact 41 are located on the same side of the line connecting the rotation centers of the latch 400 and the traction rod 500. The arrangement of the operating mechanism 1 and the moving contact 41 is more compact, saving space.

[0092] Specifically, the transmission assembly in this embodiment further includes a connecting rod 300, which is drively connected between the movable shaft 210 and the rotating shaft 3. That is, the transmission assembly is formed by sequentially connecting the pull rod 220, the movable shaft 210, and the connecting rod 300. One end of the pull rod 220 and the connecting rod 300 are respectively hinged to the movable shaft 210, and the other end of the pull rod 220 is fixedly connected to the moving iron core 230 of the electromagnetic system 200. The other end of the connecting rod 300 and the rotating shaft 3 are respectively hinged to the transmission shaft 301. Preferably, the connecting rod 300 has a V-shaped curved structure.

[0093] like Figure 9-10As shown, the pull rod 220 in this embodiment includes a pull rod body 222, which is a U-shaped structure. The two sides of the pull rod body 222 are spaced apart and opposite to each other along the third direction, and are located on both sides of the bracket 100 in the third direction. The side of the pull rod body 222 closest to the control switch 800 is located between the bracket 100 and the control switch 800 in the third direction. The two sides of the pull rod body 222 are provided with pull rod hinge holes at the ends away from the bottom edge of the pull rod body 222. The two sides of the pull rod body 222 are respectively hinged to the two ends of the moving shaft 210 through the pull rod hinge holes. The bottom edge of the pull rod body 222 is bent at the top and bottom sides away from the two sides of the pull rod body 222 to provide pull rod connecting parts 223. The two pull rod connecting parts 223 are spaced apart and opposite to each other along the second direction, and are respectively fixedly connected to the top and bottom sides of the moving iron core 230 by screws.

[0094] On both sides of the pull rod body 222, the side furthest from the control switch 800 extends upward and is provided with a protruding structure serving as the pull rod driven part 221. Furthermore, the pull rod driven part 221 has an L-shaped structure, and an indicator 224 is provided at the end of the pull rod driven part 221 furthest from the pull rod body 222. An indicator mark is provided on the upper side of the indicator 224 to indicate the position of the pull rod 220, thereby indicating the open / closed state of the circuit breaker. The cover 23 of the outer casing 2 is provided with an indicator window corresponding to the indicator 224.

[0095] like Figure 9-10 As shown in Figure 14, the bracket 100 of this embodiment includes two bracket side plates 110 arranged at intervals opposite to each other along a third direction, and a bracket top plate 120 connected between the upper sides of the two bracket side plates 110, that is, the two bracket side plates 110 and the bracket top plate 120 are connected in a U-shape. The lower sides of the two bracket side plates 110 are respectively bent outward to provide bracket fixing feet 130, which can be fixedly connected to the middle seat 22 of the outer shell 2 by means of screw connection or other means. The lower sides of the two bracket side plates 110 are respectively bent inward to provide a bending structure as the second bracket stop part 150; the inner side of the two bracket side plates 110 serves as the two bracket limiting surfaces 111; the lower side of the bracket top plate 120 serves as the first bracket stop part 121; one of the bracket fixing feet 130 is provided with a bracket hanging hole 140.

[0096] The two support side plates 110 are respectively provided with guide holes 112, and the two ends of the moving shaft 210 are respectively slidably inserted into the guide holes 112 of the two support side plates 110.

[0097] A locking rotating shaft 101 and a traction rod rotating shaft 102 are connected between the two bracket side plates 110, respectively for rotatably connecting with the locking buckle 400 and the traction rod 500. Each of the two bracket side plates 110 has a first mounting hole 113 that mates with the locking rotating shaft 101, with both ends of the locking rotating shaft 101 inserted into the first mounting holes 113 of the two bracket side plates 110; each of the two bracket side plates 110 also has a second mounting hole 114 that mates with the traction rod rotating shaft 102, with both ends of the traction rod rotating shaft 102 inserted into the second mounting holes 114 of the two bracket side plates 110.

[0098] A rotating shaft 103 is vertically mounted on the top plate 120 of the bracket, meaning the axis of the rotating shaft 103 is aligned along a second direction. The top plate 120 has a third mounting hole 115 that mates with the rotating shaft 103, and the rotating shaft 103 is inserted into the third mounting hole 115. Preferably, the rotating shaft 103 is a rivet, and the shank of the rivet is riveted into the third mounting hole 115.

[0099] like Figure 2-3 As shown, the magnetically controlled circuit breaker with a manual operating mechanism in this embodiment also includes a cover plate 900. The middle seat 22 of the outer shell 2 is provided with an installation chamber 25. The cover plate 900 includes a cover plate body 910. The electromagnetic system 200 is installed in the installation chamber 25. The cover plate body 910 is closed and connected to the opening of the installation chamber 25. The cover plate body 910 and the installation chamber 25 of the middle seat 22 can be fixedly connected by screws, snap-fit ​​or other means.

[0100] The cover plate body 910 extends along a first direction and is provided with a cover plate extension 920, on which the control switch 800 is mounted. The cover plate 900 serves both to electrically isolate the electromagnetic system 200 from other mechanisms and to mount the control switch 800, simplifying the structure and installation. Furthermore, the cover plate extension 920 has two cover plate clips 930 protruding and arranged at intervals opposite each other along the first direction. The cover plate clips 930 have an inverted snap structure, with the clipping part of the cover plate clip 930 fastening onto the upper side of the control switch 800, such that the upper limit of the control switch 800 in the second direction is located between the clipping part of the cover plate clip 930 and the cover plate extension 920, and the upper limit in the first direction is located between the roots of the two cover plate clips 930. Preferably, the cover plate extension 920 has a protruding cover plate positioning post 940, and the control switch 800 has a switch positioning hole corresponding to the cover plate positioning post 940. The cover plate positioning post 940 is inserted into the switch positioning hole to position the control switch 800. Figure 3 , 10As shown in Figure -11, the rotating component 600 of this embodiment includes a rotating component body 650. The rotating component body 650 is a flat plate structure perpendicular to the rotation center direction of the rotating component 600. A rotating component rotation hole 651 is provided in the middle of the rotating component body 650. The rotating component 600 is rotatably connected to the rotating component rotation shaft 103 on the bracket 100 through the rotating component rotation hole 651. The axis of the rotating component rotation hole 651 coincides with the axis of the rotating component rotation shaft 103, serving as the rotation center of the rotating component 600. The rotation center of the rotating component 600 is perpendicular to the rotation center of the traction rod 500 and perpendicular to the movement direction of the moving shaft 210, that is, the rotation center of the rotating component 600 is set along the second direction. Three protruding structures are provided on the side of the rotating component body 650, arranged sequentially and at intervals around the rotation center of the rotating component 600. These three protruding structures serve sequentially as the rotating component trigger part 630, the closing drive part 640, and the opening drive part 610. The rotating component trigger part 630 is preferably an arc-shaped protrusion; the closing drive part 640 is preferably a strip-shaped protrusion; the opening drive part 610 is preferably a bent structure, such as a V-shaped structure. The fourth trigger part of the traction rod 500 is located inside the opening of the opening drive part 610 and is spaced apart from the end of the opening drive part 610. The rotating component 600 has a simple structure and is easy to manufacture. The rotating component body 650 is provided with a rotating component hook 620 protruding along the rotation center direction of the rotating component 600.

[0101] In this embodiment, the rotating spring 601 is a tension spring, connecting the rotating component 600 and the outer casing 2. Specifically, the middle seat 22 of the outer casing 2 is provided with a middle seat hook 24 that is spaced apart from the rotating component hook 620. The rotating spring 601 is inclined, with one end hanging on the rotating component hook 620 and the other end hanging on the middle seat hook 24. The connection position between the rotating spring 601 and the rotating hook 620 is higher than the connection position between the rotating spring 601 and the middle seat hook 24. Of course, the rotating spring 601 can also be a torsion spring, compression spring, etc.

[0102] like Figure 2 , 9As shown in Figure -12, the manual operating mechanism of this embodiment also includes an operating component 700 for manual operation. The operating component 700 is fixedly connected to the rotating component 600 and is coaxially and synchronously arranged with the rotating component 600. Specifically, the operating component 700 of this embodiment includes an operating component body 710, which is preferably a cylindrical structure. The operating component body 710 has an operating hole 711 on the end face of the cover 23 of the outer shell 2. The operating hole 711 is preferably an internal hexagonal hole, which facilitates the use of tools such as an internal hexagonal wrench. When it is necessary to rotate the rotating component 600, a tool is inserted into the operating hole 711, and the operating component 700 is rotated with the tool, thereby causing the rotating component 600 to rotate synchronously with the operating component 700. Furthermore, the rotating component body 650 is provided with two rotating component mounting holes 652 located on both sides of the rotating component rotation hole 651; the lower part of the operating component body 710 has a protruding annular operating component flange 720, and the operating component flange 720 has two downward protruding operating component bosses 730 corresponding to the two rotating component mounting holes 652 respectively. The operating component bosses 730 are fixed in the rotating component mounting holes 652 to achieve a fixed connection between the operating component 700 and the rotating component 600. Of course, as another embodiment, the operating component 700 and the rotating component 600 can also be integrally connected.

[0103] like Figure 9-10 As shown in Figures 13 and 17, the latch 400 of this embodiment is located between the two support side plates 110 in the third direction, and includes at least one latch plate. Each latch plate includes a latch limiting part 410 and a latch rotating part 430 that are bent and connected. The latch rotating part 430 is provided with a latch rotating hole 431. The latch 400 is rotatably connected to the latch rotating shaft 101 on the support 100 through the latch rotating hole 431. The axis of the latch rotating hole 431 and the axis of the latch rotating shaft 101 coincide, serving as the rotation center of the latch 400. The latch rotating part 430 is provided with a latch stop surface 432. The latch stop surface 432 is connected at an angle to the first latch mating surface 412 to form a latch recess 440.

[0104] Specifically, the latch 400 of this embodiment includes two latch plates that are spaced apart and opposite to each other along the rotation center direction (third direction) of the latch 400, and a latch connecting part 460 connected between the two latch plates. The latch connecting part 460 is U-shapedly connected to the latch rotating parts 430 of the two latch plates, and the latch stop surface 432, which is flush with the side of the latch rotating parts 430 of the two latch plates, is flush with the side of the latch stop surface 432 forming a U-shaped plane.

[0105] The upper side of the latch connecting part 460 serves as the first latch positioning part 470. The latch rotating parts 430 of the two latch plates each have a protruding structure that serves as the second latch positioning part 480.

[0106] like Figure 9-10 As shown, the locking spring 401 in this embodiment is a torsion spring, comprising two torsion spring bodies. The locking spring 401 is located between the two support side plates 110 in the third direction. The two torsion spring bodies are respectively sleeved on the locking rotation shaft 101 and located on both sides of the locking spring 400 in the third direction. One end of each torsion spring body abuts against the support 100, and the other ends of the two torsion spring bodies are integrally connected to form a U-shaped structure. The two sides of this U-shaped structure rest on the second locking positioning portions 480 on both sides of the locking spring 400. Of course, the locking spring 401 can be a single-torsion spring structure, or it can be a tension spring, compression spring, etc.

[0107] like Figure 9-10 As shown in Figures 15-16, the traction rod 500 of this embodiment includes a traction rod body 510, which is a long rod structure arranged along a third direction in the length direction. A traction rod rotating part 520 is provided on the upper side of the middle part of the traction rod body 510, and the traction rod rotating part 520 is provided with a traction rod rotating hole 521. The traction rod rotating part 520 is located between two support side plates 110. The traction rod 500 is rotatably connected to the traction rod rotating shaft 102 on the support 100 through the traction rod rotating hole 521. The axis of the traction rod rotating hole 521 coincides with the axis of the traction rod rotating shaft 102, serving as the rotation center of the traction rod 500. A traction rod hook 580 is provided on the side of the traction rod rotating part 520.

[0108] The traction rod rotating part 520 is provided with two traction rod mounting parts 530 that are respectively raised upward and spaced apart in a third direction. A roller rotating shaft 503 is connected between the two traction rod mounting parts 530. The roller 502 is provided with a roller rotating hole. The roller 502 is rotatably connected to the roller rotating shaft 503 through the roller rotating hole. The axis of the roller rotating hole and the axis of the roller rotating shaft 503 are coincident and set as the rotation center of the roller 502.

[0109] One end of the traction rod body 510 is provided with an upwardly protruding first traction rod protrusion 540 and a side-protruding first traction rod platform 550. The other end of the traction rod body 510 is provided with an upwardly protruding third traction rod protrusion 590. The traction rod mounting part 530 is provided with a side-protruding second traction rod platform 560. The first traction rod protrusion 540, the first traction rod platform 550, the second traction rod platform 560, and the third traction rod protrusion 590 serve as the first trigger part, the second trigger part, the traction rod positioning part, and the fourth trigger part, respectively. The lower side of the traction rod body 510 is provided with three second traction rod protrusions 570, which serve as the third trigger part.

[0110] In this embodiment, as Figure 3As shown, the third traction rod protrusion 590 and the control switch 800 are located on the same side of the bracket 100 in the third direction, and the third traction rod protrusion 590 is located on the side of the control switch 800 away from the electromagnetic system 200 in the first direction.

[0111] like Figure 8 , 15 As shown, the traction rod spring 501 in this embodiment is an inclined tension spring, with one end hanging on the bracket hanging hole 140 and the other end hanging on the traction rod hook 580. Of course, the traction rod spring 501 can also be a torsion spring, compression spring, etc.

[0112] The magnetically controlled circuit breaker of this embodiment has automatic closing driven by electromagnetic system 200, remote opening driven by trip unit 5, manual opening driven by opening button 6, short-circuit opening protection driven by short-circuit protection mechanism 7, electric closing driven by rotating part 600, manual closing, and manual opening.

[0113] The automatic closing process of the magnetically controlled circuit breaker in this embodiment is as follows: Figure 6 As shown, when the control system 8 sends a closing signal, the control electromagnetic system 200 coil 250 is energized, magnetizing the stationary iron core 240, causing the moving iron core 230 to move to the left until it engages with the stationary iron core 240. The moving iron core 230 drives the moving shaft 210 to move from the first position to the second position along the length direction of the guide hole 112 via the pull rod 220 (that is, the moving shaft 210 slides along the first locking mating surface 412 into the locking recess 440). The moving shaft 210 drives the rotating shaft 3 to rotate counterclockwise against the force of the return spring 31 via the connecting rod 300 (that is, the rotating shaft 3 drives the return spring 31 to store energy). The rotating shaft 3 drives the moving contact 41 to rotate counterclockwise and contact the stationary contact 42, thereby realizing the closing of the circuit breaker.

[0114] Because there is a margin in the closing stroke, the moving iron core 230 drives the moving shaft 210 to continue moving to the third position on the moving shaft via the pull rod 220, making room for the rotation of the latch 400; at the same time, as the moving shaft 210 disengages from the first latch mating surface 412 to release the limit on the latch 400 (the opening lock is released), the latch 400, driven by the latch spring 401, rotates clockwise around the latch rotation shaft 101 from the first latch position until the first latch positioning part 470 stops at the first bracket stop part 121 (i.e., the first latch positioning part 470 and the first bracket stop part 121 are in contact), thus positioning the latch 400 in the second latch position. Simultaneously, as the latch 400 releases its restraint on the roller 502, the traction rod 500, driven by the traction rod spring 501, rotates clockwise around the traction rod rotation axis 102 from the first position until the traction rod 500 drives the second traction rod platform 560 to stop at the second bracket stop 150, thus positioning the traction rod 500 in the second position. At the same time, the traction rod 500 drives the roller 502 to slide from the latch common limiting surface 411 to abut against the second latch mating surface 414, so that the roller 502, by acting on the second latch mating surface 414, restricts the latch 400 to the second position and prevents it from rotating to the first position.

[0115] Then, the coil 250 of the electromagnetic system 200 is de-energized, and the reset spring 31 and the contact spring 32 jointly drive the moving shaft 210 to move from the third position to the right along the length direction of the guide hole 112 to the second position of the moving shaft. That is, the moving shaft 210 is blocked by the locking surface 411 and cannot continue to move to the first position of the moving shaft. At this time, the circuit breaker closes, and the closing lock is achieved by the roller 502 on the traction rod 500, the locking 400 and the moving shaft 210 in sequence limiting, so that the reset spring 31 is kept in the energy storage state.

[0116] The tripping process of the magnetically controlled circuit breaker in this embodiment is as follows: Figure 7As shown, when the traction rod 500 is driven by the tripping driving force and overcomes the force of the traction rod spring 501, it rotates counterclockwise around the traction rod rotation shaft 102 from the second position to the first position. The traction rod 500 then drives the roller 502 to disengage from the second latching mating surface 414 to release the limit on the latch 400 (closing lock release). This releases the energy of the reset spring 31, driving the rotating shaft 3 to rotate clockwise. The rotating shaft 3 then drives the moving contact 41 to rotate clockwise and separate from the stationary contact 42, thus tripping the circuit breaker. Simultaneously, the reset spring 31 drives the moving shaft 210 along the length of the guide hole 112 from the second position to the right, moving it to the first position (i.e., the moving shaft 210 slides along the latching common limiting surface 411) via the rotating shaft 3 and connecting rod 300. The first latch mating surface 412) is used to drive the latch 400 to overcome the force of the latch spring 401 and rotate counterclockwise around the latch rotation shaft 101 from the second latch position to the first latch position. This causes the moving shaft 210 to limit the latch 400 to the first latch position by acting on the first latch mating surface 412, preventing it from rotating to the second latch position. Then, the latch 400, through the latch common limiting surface 411, acts on the roller 502 to limit the traction rod 500 to the first traction rod position, preventing it from rotating to the second traction rod position. At this time, the circuit breaker trips. The tripping and locking are achieved by the sequential limiting of the moving shaft 210, the latch 400, and the roller 502 on the traction rod 500, so that the traction rod spring 501 and the latch spring 401 are kept in the energy storage state.

[0117] The electric closing process of the magnetically controlled circuit breaker in this embodiment is as follows: Figure 3 As shown, when the electromagnetic system 200 is powered, the rotating part 600 is manually rotated. When the rotating part 600 rotates clockwise from the initial position to the electric closing position, the rotating part triggering part 630 triggers the control switch 800 to control the coil 250 of the electromagnetic system 200 to be energized, magnetizing the stationary iron core 240, causing the moving iron core 230 to move to the left and engage with the stationary iron core 240. The subsequent operation of driving the circuit breaker to close is the same as the automatic closing process described above, and will not be repeated here.

[0118] The manual closing process of the magnetically controlled circuit breaker in this embodiment is as follows: Figure 3 As shown, when there is no power supply to the electromagnetic system 200, manually rotating the rotating part 600 causes it to rotate clockwise from the initial position to the electrically closed position. At this point, the rotating part triggering part 630 triggers the control switch 800. However, because the electromagnetic system 200 is de-energized, it cannot drive the circuit breaker to electrically close. When the rotating part 600 continues to rotate clockwise to the manual closing position, as shown... Figure 6As shown, the rotating part 600 acts on the driven part 221 of the pull rod through the closing drive part 640, driving the pull rod 220 to move to the left. The pull rod 220 drives the moving shaft 210 to move from the first position to the right along the length direction of the guide hole 112 to the second position of the moving shaft (that is, the moving shaft 210 slides along the first locking mating surface 412 into the locking recess 440). The subsequent operation of driving the circuit breaker to close is the same as the above-mentioned automatic closing process, and will not be described again here.

[0119] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0120] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A magnetically controlled circuit breaker with a manual operating mechanism, comprising an operating mechanism (1) and an electromagnetic system (200), wherein the operating mechanism (1) comprises a transmission component and a locking component that limits the transmission component; the electromagnetic system (200) drives a moving contact (41) through the transmission component; when the electromagnetic system (200) is energized, it drives the transmission component, which drives the moving contact (41) and the stationary contact (42) to contact, and the locking component limits the transmission component; when the locking component is driven by the tripping driving force to release the limit on the transmission component, it causes the moving contact (41) and the stationary contact (42) to separate; characterized in that: The magnetically controlled circuit breaker also includes a manual operating mechanism, which includes a rotating component (600), a rotating component spring (601), and a control switch (800). The rotating component (600) is provided with a rotating component triggering part (630) that is triggered and cooperates with the control switch (800), a closing drive part (640) that is driven and cooperates with the transmission component, and a closing drive part (610) that is driven and cooperates with the locking component. The rotating component (600) is rotatably arranged, and when it rotates along the closing direction, it passes through the electric closing position and the manual closing position in sequence from the initial position. When the rotating component (600) is in the electric closing position, the rotating component triggering part (630) triggers the control switch (800) to control the electromagnetic system (200) to be energized. When it is in the manual closing position, the closing drive part (640) acts on the transmission component to drive the moving contact (41) and the stationary contact (42) to contact. When the rotating member (600) rotates from the initial position to the open position along the opening direction opposite to the closing direction, it drives the opening drive unit (610) to act on the locking assembly to provide the locking assembly with the opening drive force; The rotating spring (601) is connected to the rotating component (600) and is used to drive the rotating component (600) to rotate to the initial position.

2. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 1, characterized in that: The transmission assembly includes a movable shaft (210) linearly mounted on a bracket (100) of the operating mechanism (1), and a pull rod (220) connecting the movable shaft (210) and the moving iron core (230) of the electromagnetic system (200). The pull rod (220) is provided with a pull rod driven part (221) that drives and cooperates with the closing drive part (640). The locking assembly includes a latch (400) and a traction rod (500) respectively rotatably mounted on the bracket (100). The traction rod (500) is provided with a fourth trigger part that drives and cooperates with the tripping drive part (610). When the circuit breaker is closed, the traction rod (500), latch (400), and moving shaft (210) are sequentially limited. When the rotating part (600) is in the tripping position, it drives the tripping drive part (610) to act on the fourth trigger part to provide tripping driving force to the traction rod (500), so that the traction rod (500) releases the limitation on the latch (400), and then the latch (400) releases the limitation on the moving shaft (210).

3. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 2, characterized in that: The operating mechanism (1) further includes a return spring (31), a bracket (100), a lock spring (401) and a traction rod spring (501) respectively connected to the lock (400) and the traction rod (500), and the traction rod (500) is provided with a roller (502), which is rotatably arranged; When the electromagnetic system (200) is energized, it drives the moving shaft (210) to move from the first position to the second position. The moving shaft (210) drives the moving contact (41) and the stationary contact (42) to contact, and at the same time drives the return spring (31) to store energy. The moving shaft (210) releases the limit on the latch (400), causing the latch (400) to rotate from the first position to the second position under the drive of the latch spring (401). The latch (400) limits the moving shaft (210) to the second position and prevents it from moving to the first position. At the same time, the latch (400) releases the limit on the roller (502), causing the traction rod (500) to rotate from the first position to the second position under the drive of the traction rod spring (501). The roller (502) limits the latch (400) to the second position and prevents it from rotating to the first position. When the traction rod (500) is driven by the tripping driving force to overcome the force of the traction rod spring (501) and rotates from the second position to the first position, the traction rod (500) drives the roller (502) to release the limit on the latch (400), thereby the return spring (31) releases energy and drives the moving contact (41) and the stationary contact (42) to separate. At the same time, the return spring (31) drives the moving shaft (210) to move from the second position to the first position. The moving shaft (210) drives the latch (400) to overcome the force of the latch spring (401) and rotate from the second position to the first position, and limits the latch (400) to the first position and prevents it from rotating to the second position. Then, the latch (400) limits the traction rod (500) to the first position through the roller (502) and prevents it from rotating to the second position.

4. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 3, characterized in that: The latch (400) has a latch rotating part (430) rotatably mounted on the bracket (100) at one end away from the electromagnetic system (200), and a latch limiting part (410) is provided at the other end of the latch (400) close to the electromagnetic system (200), which respectively limits and cooperates with the roller (502) and the moving shaft (210). The latch limiting part (410) has a first latch limiting surface and a first latch mating surface (412) respectively limiting and cooperating with the moving shaft (210), and a second latch limiting surface and a second latch mating surface (414) respectively limiting and cooperating with the roller (502). When the moving shaft (210) is in the first position, the latch (400) is limited to the first position by acting on the first latch mating surface (412), and the latch (400) is limited to the first position by acting on the roller (502) through the second latch limiting surface. When the traction rod (500) is in the second position, the roller (502) acts on the second locking mating surface (414) to limit the lock (400) in the second position, so that the lock (400) acts on the moving shaft (210) through the first locking limiting surface to limit the moving shaft (210) in the second position.

5. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 2, characterized in that: The operating mechanism (1) is located above the moving contact (41) and the stationary contact (42) in the second direction. The moving iron core (230), the moving shaft (210), and the pull rod (220) of the electromagnetic system (200) are synchronously moved and linearly moved along the first direction. The rotation center of the latch (400), the traction rod (500), and the moving contact (41), and the axis of the moving shaft (210) are respectively arranged along the third direction and are parallel to each other. The first direction, the second direction, and the third direction are perpendicular to each other. The electromagnetic system (200) is located on one side of the support (100) of the operating mechanism (1) in the first direction, and above the moving contact (41) and the stationary contact (42) in the second direction; The rotating component (600) is rotatably mounted on the support (100) of the operating mechanism (1) and is located above the support (100) in the second direction. The rotation center of the rotating component (600) is set along the second direction. The control switch (800) is located on the same side of the rotating component (600) and the support (100) in the third direction.

6. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 5, characterized in that: It also includes a housing (2) and a cover plate (900), wherein the housing (2) is provided with an installation chamber (25); the cover plate (900) includes a cover plate body (910), the electromagnetic system (200) is installed in the installation chamber (25), the cover plate body (910) is closed and connected to the opening of the installation chamber (25), the cover plate body (910) extends along a first direction and is provided with a cover plate extension (920), and the control switch (800) is installed on the cover plate extension (920).

7. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 2, characterized in that: The moving contact (41) is mounted on the rotating shaft (3). The transmission assembly also includes a connecting rod (300). The connecting rod (300) is connected between the moving shaft (210) and the rotating shaft (3). One end of the pull rod (220) and the connecting rod (300) are respectively hinged to the moving shaft (210). The other end of the pull rod (220) is fixedly connected to the moving iron core (230) of the electromagnetic system (200). The other end of the connecting rod (300) and the rotating shaft (3) are respectively hinged to the transmission shaft (301).

8. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 1, characterized in that: The rotating component (600) includes a rotating component body (650), which is a flat plate structure perpendicular to the rotation center direction of the rotating component (600). The side of the rotating component body (650) extends with three protruding structures arranged sequentially and at intervals around the rotation center of the rotating component (600). These three protruding structures serve as the rotating component trigger part (630), closing drive part (640), and opening drive part (610) in sequence.

9. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 1, characterized in that: The manual operating mechanism also includes an operating component (700) for manual operation. The operating component (700) is fixedly connected to the rotating component (600) and is arranged to rotate synchronously with the rotating component (600) on the same axis.

10. The magnetically controlled circuit breaker with a manual operating mechanism according to claim 2, characterized in that: The magnetic circuit breaker includes a trip unit (5), and the traction rod (500) is provided with a first trigger part that cooperates with the trip unit (5). When the trip unit (5) acts on the first trigger part, it provides a tripping driving force for the traction rod (500). And / or, the magnetically controlled circuit breaker includes a trip button (6), and the traction rod (500) is provided with a second trigger part that cooperates with the trip button (6). When the trip button (6) acts on the second trigger part, it provides a tripping driving force to the traction rod (500). And / or, the magnetically controlled circuit breaker includes a short-circuit protection mechanism (7), and the traction rod (500) is provided with a third trigger part that cooperates with the short-circuit protection mechanism (7). When the short-circuit protection mechanism (7) acts on the third trigger part, it provides a tripping driving force for the traction rod (500).

Images