Automatic opening and closing mechanism of circuit breaker and circuit breaker

Abstract

The automatic closing and opening mechanism of the circuit breaker comprises a first button, a second button, an electromagnetic driving part and a movable part. The movable part has a first active position and a second active position. When the movable part is at the first active position, the movable part cooperates with the first button, so that the electromagnetic driving part can drive the movable part to contact and move the first button. When the movable part is at the second active position, the movable part cooperates with the second button, so that the electromagnetic driving part can drive the movable part to contact and move the second button. The circuit breaker can realize the switching of the closing and opening states of the circuit breaker by driving the double buttons through a single electromagnetic driving part, and has the advantages of simple structure, low assembly precision requirement and low cost.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical equipment technology, and in particular to an automatic opening and closing mechanism for a circuit breaker and a circuit breaker. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into plug-in circuit breakers, fixed circuit breakers, and drawer-type circuit breakers according to their installation method. The use of plug-in circuit breakers can effectively improve the safety of electrical equipment in various industries, and therefore, plug-in circuit breakers are widely used in industries such as telecommunications. The timely feedback characteristic of the telecommunications industry requires the ability to remotely control the closing and opening of circuit breakers.

[0003] Circuit breakers typically include closing and opening assemblies to control the circuit breaker's operation. To enable remote control of these assemblies, a drive mechanism capable of remotely controlling the closing and opening mechanism is required. Commonly used closing and opening assemblies include single-button and double-button types; the power sources for remotely controllable drive mechanisms commonly include motor drives and electromagnetic drives.

[0004] Motor-driven circuit breakers require gears to operate the closing and opening components, resulting in high manufacturing precision, difficult assembly, and high costs. While electromagnetic drives are less expensive, their operation is simple and typically only works with a single button, using reciprocating motion to close and open the circuit breaker. However, users cannot clearly distinguish the circuit breaker's closing or opening status by observing the single button's position. To enable the use of electromagnetic drives in conjunction with dual-button circuit breakers, current technology uses at least two electromagnetic actuators to control the operation of each button, increasing production and control costs and occupying significant internal space within the circuit breaker. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic opening and closing mechanism for a circuit breaker and a circuit breaker in order to solve the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides an automatic opening and closing mechanism for a circuit breaker, including a base;

[0007] An electromagnetic drive component is disposed within the base and can be driven and reset along a straight line;

[0008] The first button and the second button are movably disposed within the base and are used for opening and closing the circuit breaker;

[0009] A movable component is movably connected to the electromagnetic drive component, and the electromagnetic drive component drives the movable component to move the first button or the second button within the base;

[0010] The movable component includes a first movable position and a second movable position. In the first movable position, it cooperates with the first button, and the electromagnetic drive can drive the movable component to contact and move the first button. In the second movable position, the movable component cooperates with the second button, and the electromagnetic drive can drive the movable component to contact and move the second button.

[0011] In some embodiments, the automatic opening and closing mechanism further includes:

[0012] A linkage component, one end of which is hinged to the electromagnetic drive component, and the other end of which is connected to the movable component;

[0013] The movable component is provided with a first elastic element; one end of the first elastic element is connected to the movable component, and the other end is connected to the linkage element, so that the movable component is rotatably connected to the linkage element.

[0014] In some embodiments, the first button has a first waiting position and a first working position within the base; the second button has a second waiting position and a second working position within the base, respectively corresponding to the first working position and the first waiting position of the first button.

[0015] In some embodiments, the first button includes:

[0016] The blocking segment can interfere with the movable component when the first button is in the first working position, so that the movable component is in a second active position; the blocking segment can avoid the movable component when the first button is in a first waiting position, so that the movable component is in a first active position.

[0017] In some embodiments, the electromagnetic drive can drive the movable member to move along a first active path and then contact and push the first button to the first working position;

[0018] The electromagnetic drive component can drive the movable component to move along the second movable path and then contact and push the second button to the second working position;

[0019] The automatic opening and closing mechanism also includes:

[0020] A limiting member is disposed between the first active path and the second active path to prevent the active member from moving to the first active path when the active member moves along the second active path.

[0021] In some embodiments, the limiting member has a first limiting surface that is perpendicular to the moving plane of the movable member and faces the second moving path;

[0022] The movable component has a movable component boss extending outward from the moving plane;

[0023] The limiting member abuts against the protrusion of the movable member through the first limiting surface to prevent the movable member from moving to the first moving path.

[0024] In some embodiments, the limiting member further has a second limiting surface perpendicular to the moving plane of the movable member and facing the first moving path; the movable member boss can abut against the second limiting surface and drive the limiting member toward the second moving path so that the limiting member avoids the movable member.

[0025] In some embodiments, the first button includes a first button segment, a first button second segment, and a first button third segment connected in sequence;

[0026] The first button segment and the second button are arranged side by side on the same side of the moving plane of the movable part;

[0027] The blocking segment is connected to the first button segment near the movable component on the side of the first button segment. The second segment of the first button extends from the first button segment to the moving plane of the movable component. The third segment of the first button is parallel to the first button segment. The second segment of the first button contacts the movable component so that the movable component pushes the first button.

[0028] In some embodiments, the limiting member has a first protrusion perpendicular to the moving plane of the movable member;

[0029] The first protrusion is configured to abut against the first button three segments when the second button is in the second working position.

[0030] In some embodiments, the second button is provided with an abutment extending to the moving plane of the movable member, the abutment contacting the movable member to cause the movable member to push the second button.

[0031] In some embodiments, the portion of the abutment facing the limiting member is recessed to form a third stop surface to accommodate the limiting member and limit its range of movement.

[0032] In some embodiments, the second button has a limiting member mounting portion on the side near the movable member, and the limiting member is provided with a fourth elastic member so that the limiting member tends to rotate toward the first movable path;

[0033] The limiting member and the fourth elastic member are disposed on the limiting member mounting part.

[0034] In some embodiments, a cover is further included for covering the base, and the limiting member is disposed on the cover.

[0035] In some embodiments, the cover has a cover mounting surface, and the limiting member is provided with a fourth elastic member so that the limiting member maintains a tendency to rotate toward the first active path;

[0036] The limiting member and the fourth elastic member are disposed on the mounting surface of the cover.

[0037] In some embodiments, a baffle is further included; the baffle is fixed to the cover to limit the limiting member and the fourth elastic member between the cover mounting surface and the baffle.

[0038] The present invention also provides a circuit breaker, comprising an automatic opening and closing mechanism, a moving contact, a stationary contact, and an operating mechanism as described in any of the foregoing embodiments;

[0039] The first and second buttons of the automatic opening and closing mechanism are both connected to the moving contact through the operating mechanism, so as to drive the moving contact to contact or separate from the stationary contact.

[0040] The automatic opening and closing mechanism of the circuit breaker provided by this invention uses an electromagnetic drive to drive a movable part, which in turn moves a button to achieve the opening and closing of the circuit breaker. The circuit breaker has a first button and a second button. Moving these two buttons allows for different opening and closing states of the circuit breaker. The movable part is connected to the electromagnetic drive and has a first movable position and a second movable position. When the movable part is in the first movable position, the electromagnetic drive can drive it to move the first button; when the movable part is in the second movable position, the electromagnetic drive can drive it to move the second button. The circuit breaker of this invention allows the linear driving force of the electromagnetic drive to be selectively transmitted to different buttons via the movable part. A single electromagnetic drive can drive two buttons to switch the automatic opening and closing of the circuit breaker. This automatic opening and closing mechanism has a simple structure, low assembly precision requirements, and low cost. Furthermore, the automatic opening and closing mechanism of this invention includes a blocking section connected to the first button, allowing the position of the movable part to be switched after the first button is moved, facilitating further driving of the movable part to move the second button.

[0041] The automatic opening and closing mechanism of the present invention also provides a first elastic element connecting the movable part, which, in conjunction with the position of the first button, enables the movable part to return to the next active position after the electromagnetic drive is reset. The entire automatic opening and closing mechanism can continuously and alternately realize opening and closing. A limit element is provided to prevent the movable part from being misaligned due to the influence of the first elastic element during movement, and to facilitate guiding the movable part to the second button.

[0042] In the automatic opening and closing mechanism of the present invention, the limiting component is rotatable. During the reset process after the moving component moves the first button, the limiting component can rotate to make way, so that the reset process of the moving component is smoother.

[0043] In the automatic opening and closing mechanism of the present invention, the first button has a first button section, a first button second section, and a first button third section connected in sequence. The first button second section is for the movable part to contact and press. The first button third section is closer to the movable part than the first button first section. A limiting member is provided on the side of the second button close to the movable part. At the same time, a first protrusion is provided on the limiting member. When the second button is in the second working position, the first protrusion abuts against the first button third section. Thus, the automatic opening and closing mechanism retains the guiding function of the limiting member while ensuring simple assembly, and also avoids the limiting member from turning into the first button and affecting the switching of the circuit breaker's opening and closing states.

[0044] In another embodiment of the present invention, the limiting member is disposed on the cover, thereby separating the limiting member from the first button and the second button. This also allows the automatic opening and closing mechanism to retain the guiding function of the limiting member while ensuring simple assembly, and avoids the limiting member affecting the movement switching of the first button and the second button. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0046] The methods, systems, and / or procedures shown in the accompanying drawings will be further described with reference to exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments, wherein reference numerals in the various views of the drawings represent similar mechanisms.

[0047] Figure 1 This application provides circuit breaker tripping state diagrams for some embodiments of the present application.

[0048] Figure 2 This application provides circuit breaker closing state diagrams for some embodiments of the present application.

[0049] Figure 3 The following are structural diagrams of electromagnetic drive components involved in some embodiments of this application;

[0050] Figure 4 The following are structural diagrams of transmission components involved in some embodiments of this application;

[0051] Figure 5 This is a structural diagram showing the assembled electromagnetic drive component and transmission assembly involved in some embodiments of this application;

[0052] Figure 6This is a structural diagram of the first button involved in some embodiments of this application;

[0053] Figure 7 This is a structural diagram of the second button involved in some embodiments of this application;

[0054] Figure 8 for Figure 7 Enlarged structural diagram of the limiting component mounting part of the second button;

[0055] Figure 9 The following are structural diagrams of the limiting components involved in some embodiments of this application;

[0056] Figure 10 This is a structural diagram of the intermediate spacer involved in some embodiments of this application;

[0057] Figure 11 The following are schematic diagrams of the rotating shaft structure involved in some embodiments of this application;

[0058] Figure 12 This is a diagram showing the connection relationship of some components of a circuit breaker in the initial open state according to some embodiments of this application;

[0059] Figure 13 This is a diagram showing the connection relationship of some components of a circuit breaker when it is in the closed state according to some embodiments of this application.

[0060] Figure 14 This is a diagram showing the connection relationship of some components of the circuit breaker at a certain moment in the automatic closing process involved in some embodiments of this application;

[0061] Figure 15 This is a diagram showing the connection relationship of some components of the circuit breaker at another moment in the automatic closing process involved in some embodiments of this application;

[0062] Figure 16 This is a diagram showing the connection relationship of some components of the circuit breaker at a certain moment in the automatic tripping process involved in some embodiments of this application;

[0063] Figure 17 This is a diagram showing the connection relationship of some components of the circuit breaker at another moment in the automatic tripping process involved in some embodiments of this application;

[0064] Figure 18 The following are structural diagrams of the limiting components involved in some embodiments of this application;

[0065] Figure 19 These are diagrams illustrating the baffle structure in some embodiments of this application;

[0066] Figure 20 These are diagrams illustrating the cover structure of some embodiments of this application;

[0067] Figure 21 This is a structural diagram showing the limiting member installed on the cover in some embodiments of this application;

[0068] Figure 22 This is a diagram showing the connection relationship of some components of a circuit breaker in the initial open state according to some embodiments of this application;

[0069] Figure 23 This is a diagram showing the connection relationship of some components of a circuit breaker when it is in the closed state according to some embodiments of this application.

[0070] Figure 24 This is a diagram showing the connection relationship of some components of the circuit breaker at a certain moment in the automatic closing process involved in some embodiments of this application;

[0071] Figure 25 This is a diagram showing the connection relationship of some components of the circuit breaker at another moment in the automatic closing process involved in some embodiments of this application;

[0072] Figure 26 This is a diagram showing the connection relationship of some components of the circuit breaker at a certain moment in the automatic tripping process involved in some embodiments of this application;

[0073] Figure 27 This is a diagram showing the connection relationship of some components of the circuit breaker at another moment in the automatic tripping process involved in some embodiments of this application.

[0074] Icons: 1-Electromagnetic drive component; 2-Transmission assembly; 3-Locking assembly; 4-Closing / opening assembly; 5-Base; 6-Operating mechanism; 11-Moving iron core; 111-Moving iron core end cap; 12-Rubber pad; 13-Iron core spring; 14-Baffle; 15-Magnetic yoke; 151-Semi-open circular slot; 152-Fixing slot; 16-Frame; 17-Winding; 18-Stationary iron core; 21-Linkage component; 211-Linkage component body; 212-Linkage shaft; 213-Linkage component groove; 214-Through hole; 22-Pin; 23-First elastic component; 24-Moving component; 241-Moving component groove; 242-Moving component boss; 243-Working surface; 41-First button; 4110-First button head ; 4111-First button section 1; 4112-First button section 2; 4113-First button section 3; 412-First guide part; 4121-First guide segment; 4122-Second guide segment; 414-Blocking segment; 415-First abutting surface; 416-First connecting rod hole; 417-Guide boss; 418-First stop surface; 419-Second stop surface; 42-Second button; 4210-Second button head; 4211-Torsion spring arm groove; 4212-First sector groove; 4213-Second sector groove; 4214-Third stop surface; 4215-Supporting surface; 422-Second guide part; 4221-Third guide segment; 4222-Fourth guide segment; 4223-Fifth Guide section; 424-Second abutment surface; 425-Through hole groove; 426-Through hole; 427-Abutment platform; 428-Complementary platform; 429-Second connecting rod hole; 43-Limiting member; 431-First protrusion; 432-First limiting surface; 433-Second protrusion; 434-Mating surface; 435-Pivot; 436-Second limiting surface; 44-Fourth elastic member; 45-Connecting rod; 451-First connecting rod; 452-Second connecting rod; 453-Third connecting rod; 46-Rotating shaft; 461-Third connecting rod hole; 462-Fourth connecting rod hole; 463-Fifth connecting rod hole; 464-First circumferential wall; 465-Second circumferential wall; 466-Rotating shaft hole; 467-Rotating shaft bottom surface; 47-Fifth elastic member Components; 48-Intermediate spacer; 481-Bottom hole; 482-Support platform; 483-Side of support platform; 484-Stop platform; 61-Moving contact; 62-Static contact; A-Limiting component; A1-First mounting shaft; A2-First surface; A3-Second limiting surface; A4-First limiting surface; A5-Limiting guide groove; A6-Second mounting shaft; A7-Limiting arm groove; A8-Second surface; B-Baffle; B1-First baffle mounting hole; B2-Second baffle mounting hole; B3-Baffle limiting hole; B4-Baffle mating surface; C-Cover; C1-Cover mounting surface; C2-Cover limiting hole; C3-Cover arm groove; C4-First cover mounting shaft; C5-Second cover mounting shaft; D-Fourth elastic component. Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0076] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0077] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0079] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0080] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0081] Example 1

[0082] like Figure 1 and Figure 2 As shown in some embodiments of this application, the circuit breaker is a plug-in type circuit breaker, including an electromagnetic drive 1, a transmission assembly 2, a locking assembly 3, a closing / opening assembly 4, an operating mechanism 6, a moving contact 61, a stationary contact 62, and a base 5 for accommodating the components. The circuit breaker is installed in a chassis. The transmission assembly 2 moves under the drive of the electromagnetic drive 1 and acts on the closing / opening assembly 4. The closing / opening assembly 4, the operating mechanism 6, and the moving contact 61 are connected in sequence, thereby the closing / opening assembly 4 drives the operating mechanism 6 to make the moving contact 61 contact the stationary contact 62 (e.g., ...). Figure 2 (as shown) or separated (such as) Figure 1 As shown in the figure, it realizes the closing or opening of the circuit breaker.

[0083] For ease of explanation Figure 1 and Figure 2 The circuit breaker shown is now represented by a spatial rectangular coordinate system. The left-right direction (length of the circuit breaker) is defined as the X-axis, with the positive X-axis direction (first direction) to the right. The up-down direction (width of the circuit breaker) is defined as the Y-axis, with the positive Y-axis direction (second direction) pointing upwards. The direction perpendicular to the paper and outwards is defined as the positive Z-axis direction (third direction). Subsequent figures and descriptions will use this coordinate system. Figure 3 , Figure 5 , Figure 10 , Figure 11 (b), Figures 12-15 , Figures 22-27 All views are XY plan views. It should be noted that the directional descriptions used to illustrate the structure and operation of the circuit breaker in the embodiments of this application, including up, down, left, right, front, and back, are not absolute methods, but relative directions. These directional descriptions can correctly correspond to the structural posture shown in the figures, but when the structural posture changes, these directional descriptions need to be interpreted and changed accordingly to adapt to such changes in structural posture.

[0084] [Electromagnetic drive components]

[0085] like Figure 1 and Figure 2 As shown, the electromagnetic drive component 1 is disposed within the base 5, as... Figure 13 and Figure 14 As shown, the electromagnetic drive unit 1 can be driven and reset along a straight line. Figure 3As shown, the electromagnetic drive component 1 includes a moving iron core 11, a rubber pad 12, an iron core spring 13, a baffle 14, a magnetic yoke 15, a frame 16, a winding 17, and a stationary iron core 18. The baffle 14 is located at one end of the magnetic yoke 15 and forms an internal space with the magnetic yoke 15. The frame 16 is disposed within this internal space. The baffle 14 has a hole in its middle, and the end of the magnetic yoke 15 away from the baffle 14 has an opening. The frame 16 is a hollow structure with openings at both ends, and the winding 17 is sleeved on the outer surface of the frame 16. The moving iron core 11 extends out of the frame 16 through the opening at one end of the frame 16 and the hole in the baffle 14 into the internal space enclosed by the baffle 14 and the magnetic yoke 15, and the moving iron core 11 can move in this direction. The stationary iron core 18 extends out of the frame 16 through the opening at the other end of the frame 16 and the opening at the end of the magnetic yoke away from the baffle 14, and is fixed in place. The magnetic yoke 15 has a fixing groove 152 for the two sides of the baffle 14 to be inserted into. The magnetic yoke 15 also has a semi-open circular groove 151 outside the fixing groove 152. On one hand, the baffle 14 and the magnetic yoke 15 work together to fix the frame 16 in its relative position inside the magnetic yoke 15. On the other hand, the baffle 14 helps to close the overall magnetic circuit and increase the electromagnetic force. The iron core spring 13 is sleeved on the moving iron core 11 and passes through the hole in the baffle 14. One side of the iron core spring 13 rests against the open surface of the frame 16. The end of the moving iron core 11 away from the frame 16 has a moving iron core end cap 111. A rubber gasket 12 is also sleeved on the moving iron core 11. The rubber gasket 12 is confined between the moving iron core end cap 111 and the iron core spring 13, and the moving iron core end cap 111 prevents the rubber gasket 12 from falling out.

[0086] [Transmission Components]

[0087] like Figure 4 As shown, the transmission assembly 2 includes a linkage 21, a pin 22, a first elastic element 23, and a movable element 24. One end of the linkage 21 is rotatably connected to the electromagnetic drive 1. The linkage 21 includes a linkage body 211, one end of which is connected to a linkage shaft 212. The linkage shaft 212 is fitted into a semi-open circular slot 151 of the electromagnetic drive, allowing the linkage 21 to rotate freely around the axis of the linkage shaft 212. A through hole 214 is provided on the linkage body 211, through which the moving iron core 11 passes and drives the linkage 21 to rotate in a first clockwise direction. Figure 5 (Rotating clockwise from C to D). The other end of the linkage body 211 has a linkage groove 213 in the middle, with ears on both sides of the linkage groove 213. One end of the movable part 24 has a movable groove 241, with ears on both sides of the movable groove 241. A pin 22 is used to connect the other end of the linkage 21 and the movable part 24. It is approximately parallel to the linkage shaft 212 and passes through the ears of the linkage 21 and the movable part 24, so that the movable part 24 is rotatably connected to the other end of the linkage 21, such as... Figure 5As shown, the rotation plane of the movable component 24 and the rotation plane of the linkage component 21 are the same plane, that is... Figure 5 The plane shown. The end of the movable part 24 furthest from the linkage part 21 has a bent portion, which bends in a first clockwise direction, making the movable part 24 hook-shaped in the plane of rotation, as shown. Figure 4 As shown, the end of the bent portion has a working surface 243 and a movable boss 242 extending perpendicular to the plane of rotation. The movable boss 242 (not shown in the diagram) Figure 5 The extension direction (shown in the figure) is perpendicular to Figure 5 The plane in which it lies points into the paper (i.e., in the opposite direction to the third direction). For example... Figure 4 As shown, the first elastic element 23 is a torsion spring, sleeved on the pin 22. One arm of the first elastic element 23 is engaged in the linkage groove 213 of the linkage element 21, and the other arm is engaged in the movable element groove 241 of the movable element 24, so that the movable element 24 can rotate around the other end of the linkage element 21 in a second clockwise direction opposite to the first clockwise direction. Figure 5 The movable part 24 maintains a tendency to open as it rotates counterclockwise from D to C. At this point, the movable part 24 can be displaced as the linkage 21 rotates, and it can also rotate repositionably around the other end of the linkage 21, meaning the movable part 24 can also rotate repositionably around the connection point.

[0088] like Figure 5 As shown, the electromagnetic drive component 1 and the transmission assembly 2 are assembled into a single unit, namely the drive mechanism. The linkage component 21 is driven by the electromagnetic drive component 1 to rotate from the linkage stop position to the linkage actuation position. The moving iron core 11 passes through the through hole 214 of the linkage component 21. One side of the iron core spring 13 rests against the opening surface of the frame 16, and the other side of the iron core spring 13 is in close contact with the linkage component 21 without crossing it. The rubber gasket 12 is constrained between the moving iron core end cap 111 and the linkage component 21 to prevent direct contact between the moving iron core 11 and the linkage component 21 and thus avoid damage, playing a role in buffering and shock absorption. Figure 1 and Figure 2 As shown, when the electromagnetic drive assembly is fixed inside the circuit breaker, the housing of the head partition 32 (not in) Figure 1 and Figure 2 (Marked out) Limits the moving iron core 11 to its leftmost extreme position in the figure, i.e., the drive stop position; such as Figure 14 As shown, the linkage 21 restricts the moving iron core 11 to the right limit position in the figure, i.e. the drive actuation position, by restricting the end cap 111 of the moving iron core.

[0089] like Figure 1 , 2As shown in Figure 5, when the winding 17 is energized and the electromagnetic drive 1 is activated, the moving iron core 11 retracts from the drive stop position to the right (from A to B) to the drive actuation position under the action of electromagnetic force; during the retraction of the moving iron core 11, the end cap 111 of the moving iron core drives the rubber pad 12 to act on the linkage 21, so that the linkage 21 rotates from the linkage stop position to the direction closer to the magnetic yoke 15 under the drive of the electromagnetic drive 1 to the linkage actuation position, that is, it rotates from the linkage stop position in the first clockwise direction. Figure 5 The moving part 24, driven by the linkage 21, presses the first button 41 or the second button 42 of the closing / opening assembly 4 during operation, thereby closing or opening the circuit breaker. When the winding 17 is de-energized and the electromagnetic drive 1 stops, the core spring 13 provides a restoring force to the linkage 21. Under the action of the core spring 13, the linkage 21 rotates from the linkage actuation position away from the magnetic yoke to the linkage stop position, that is, it rotates from the linkage actuation position in a second clockwise direction opposite to the first clockwise direction. Figure 5 The moving part 24 is reset under the drive of the linkage 21, and the linkage 21 acts on the moving iron core 11 through the rubber pad 12, thereby driving the moving iron core 11 to also reset to the drive stop position.

[0090] In this embodiment, one end of the linkage 21 is rotatably connected to the electromagnetic drive 1. However, it should be noted that the linkage 21 can be movably connected to the electromagnetic drive 1 as a movable part 24. The rotatable end of the linkage 21 can also be connected to other components and / or positions in the circuit breaker, as long as it can rotate around one end between the linkage stop position and the linkage actuation position under the drive of the electromagnetic drive 1, and drive the movable part 24 to realize the closing or opening of the circuit breaker.

[0091] [Closing / Triggering Assembly]

[0092] Please refer to the relevant structure of the closing and opening circuit breaker assembly 4. Figure 6-19 .like Figure 12 As shown, the closing / opening assembly 4 includes a first button 41, a second button 42, a limiting member 43, a fourth elastic member 44, a connecting rod 45, a rotating shaft 46, a fifth elastic member 47, and an intermediate spacer 48. The connecting rod 45 includes a first connecting rod 451, a second connecting rod 452, and a third connecting rod 453. Figure 1 and Figure 2 As shown, the first button 41 and the second button 42 are movably disposed within the base 5; the first button 41 and the second button 42 respectively have a waiting position and a working position, and the positions of the first button 41 and the second button 42 are different at the same time, that is, as shown in the figure. Figure 1As shown, when the first button 41 is in the first waiting position, the second button 42 must be in the second working position (hereinafter, "second button" and "second working position" will be mentioned together, and "second working position" will be referred to as "working position"); as Figure 2 As shown, when the second button 42 is in the second waiting position, the first button 41 is necessarily in the first working position (hereafter, "first button" and "first working position" will be mentioned together, and "first working position" will be abbreviated as "working position"). The first button 41 and the second button 42 are used for closing and opening the circuit breaker, and their working positions correspond to different closing and opening states of the circuit breaker.

[0093] To facilitate the explanation of the working principle of the entire circuit breaker, in this embodiment, the first button 41 is the closing button and the second button 42 is the opening button. Accordingly, the working position of the first button 41 corresponds to the closing state of the circuit breaker, and the working position of the second button 42 corresponds to the opening state of the circuit breaker. That is, after pressing the first button 41, the circuit breaker is in the closing state, and after pressing the second button 42, the circuit breaker is in the opening state. However, it should be noted that the closing and opening of the circuit breaker are achieved through the rotating shaft 46 and the operating mechanism 6 connected to the first button 41 and the second button 42. The first button 41 and the second button 42 provide state switching requests. When the structure and connection relationship of the related components of the rotating shaft 46 and the operating mechanism 6 are adapted, the first button 41 can also be the opening button and the second button 42 can be the closing button. Accordingly, the working position of the first button 41 corresponds to the opening state of the circuit breaker, and the working position of the second button 42 corresponds to the closing state of the circuit breaker. That is, after pressing the first button 41, the circuit breaker is in the opening state, and after pressing the second button 42, the circuit breaker is in the closing state.

[0094] like Figure 6 As shown, to facilitate the demonstration of the structure of the first button 41, Figure 12 The first button 41 in the middle is rotated around the X-axis by a certain angle to obtain Figure 6 The view in the middle. The first button 41 includes a first button segment 4111, a first button segment 4112 and a first button segment 4113 connected in sequence, wherein the first button segment 4111 and the first button segment 4113 are strip structures along the X-axis, and the first button segment 4112 is a strip structure along the Z-axis.

[0095] The unconnected end of the first button 4111 is the first button head 4110, used by the user to manually press it to switch the first button 41 from the standby position to the working position. The first button head 4110 passes through the first button channel 321 on the head partition 32, and when the first button 41 is moved to the leftmost position (opposite to the first direction), the first button head 4110 does not extend beyond the outside of the circuit breaker. Therefore, manual pressing here does not mean pressing directly with a hand, but rather that the user manually presses the first button 41 using a specific tool. The design that the first button head 4110 does not extend beyond the outside of the circuit breaker can prevent misoperation during installation and use.

[0096] The first guide portion 412 is located at the first button segment 4111. The first button segment 4111 has a blocking segment 414 extending in the positive Z-axis direction (third direction) between the first guide portion 412 and the first button segment 4112. The blocking segment 414 is configured as follows: Figure 13 As shown, when the first button 41 is in the working position and the electromagnetic drive 1 stops, the blocking section 414 interferes with the resetting movable member 24. The movable member 24 rotates to the second active position due to its contact with the blocking section 414. In the second active position, the movable member 24 engages with the second button 42, allowing the electromagnetic drive 1 to drive the movable member 24 to move along the second active path and then contact and push the second button 42 to the working position. Figure 12 As shown, when the first button 41 is in the waiting position and the electromagnetic drive 1 stops, the blocking section 414 can avoid the reset movable member 24 relative to the second active position. The movable member 24 rotates to the first active position due to its contact with the blocking section 414. In the first active position, the movable member 24 cooperates with the first button 41 so that the electromagnetic drive 1 can drive the movable member 24 to move along the first active path and then contact and push the first button 41 to the working position. The second active position is located downstream of the first active position in the first clockwise direction. The first elastic member 23 is connected to the movable member 24 so that the movable member 24 has a tendency to rotate to the first active position in the second active position, and also has a tendency to rotate to the first active path when moving along the second active path.

[0097] Understandably, without affecting the automatic closing and opening function, when the first button 41 is in the waiting position and the electromagnetic drive 1 stops, the movable part 24 can also be parallel to the linkage 21 without abutting the blocking section 414 during reset. At this time, the movable part 24 is in the first active position. When the second button 42 is in the waiting position and the electromagnetic drive 1 stops, the movable part 24 abuts the blocking section 414 during reset and rotates to the second active position.

[0098] In this embodiment, the blocking segment 414 is part of the first button 41. It is understood that, without affecting the functions of the blocking segment 414 and the first button 41, the blocking segment 414 can be connected to the first button 41 in other ways, such as being detachable.

[0099] The second section 4112 of the first button extends from the first section 4111 in the positive Z-axis direction (third direction), and has a first abutment surface 415 and a second stop surface 419. During automatic closing, the first abutment surface 415 cooperates with the working surface 243 of the movable part 24 to complete the automatic closing of the circuit breaker. When the circuit is closed, the second stop surface 419 contacts the limiting member 43 and limits the limiting member 43 to the second limit position.

[0100] The first button segment 4113 extends from the first button segment 4112 in the positive X-axis direction (first direction), and has a first stop surface 418. The first stop surface 418 is used to contact and limit the limiting member 43 to the first limit position when the circuit is open. The unconnected end of the first button segment 4113 also has a first connecting rod hole 416 and a guide boss 417. The first button 41 is connected to the rotating shaft 46 through the first connecting rod hole 416 and the first connecting rod 451. The base 5 has a sliding groove (not shown) that mates with the guide boss 417. When the first button 41 moves left and right, the guide boss 417 slides in the sliding groove, thereby preventing the first button 41 from being misaligned.

[0101] like Figure 7 As shown, the second button 42 is a strip-shaped structure along the X-axis. One end of the second button 42 is a second button head 4210, which is used by the user to manually press to switch the second button 42 from the standby position to the working position. The second button head 4210 passes through the second button channel 322 on the head spacer 32. Similar to the first button 41, when the second button 42 is moved to the leftmost position (opposite to the first direction), the second button head 4210 does not extend beyond the outside of the circuit breaker. Therefore, the user can only press the second button 42 manually using a specific tool, which can avoid misoperation during installation and use.

[0102] The other end of the second button 42 has a supplementary platform 428, on which there is a second connecting rod hole 429. The second button 42 is connected to the rotating shaft 46 through the second connecting rod hole 429 and the second connecting rod 452. The supplementary platform 428 raises the opening position of the second connecting rod hole 429, ensuring that the fourth connecting rod hole 462 corresponding to the rotating shaft 46 is on the same plane, making the connecting rod connection more reliable.

[0103] The second button 42 also has a second guide portion 422 and a limiting member mounting portion, the second guide portion 422 and the limiting member mounting portion being located on the same surface as the supplementary platform 428.

[0104] like Figure 8 As shown, the limiting component mounting part includes a torsion spring arm groove 4211, a first sector groove 4212, a second sector groove 4213, a third stop surface 4214, a support surface 4215, a second abutment surface 424, a through hole groove 425, a through hole 426, and an abutment platform 427.

[0105] The support surface 4215 is used to support the limiting member 43. The second button 42 protrudes from one side of the support surface 4215 toward the first button 41, so that the limiting member 43 is located between the first and second active paths, which facilitates the limiting member 43 preventing the active member 24 from rotating to the first active path when the active member 24 moves along the second active path. The protrusion is provided with a through-hole groove 425 and a through hole 426 located at the bottom of the through-hole groove 425 and coaxially communicating with the through-hole groove 425. The pivot 435 of the limiting member 43 is rotatably disposed in the through hole 426. The side wall of the through-hole groove 425 is provided with a torsion spring arm groove 4211 and a first sector groove 4212. The fourth elastic member 44 is a torsion spring. The torsion spring arm groove 4211 is used to assemble and fix one rotating arm of the fourth elastic member 44. Under the action of external force, the other rotating arm of the fourth elastic member 44 assembled in the first sector groove 4212 can rotate within the first sector groove 4212. The first sector groove 4212 is connected to the second sector groove 4213 on its circumferential side. The second sector groove 4213 is used to accommodate the second protrusion 433 of the limiting member 43.

[0106] The second button 42 has an abutment platform 427 on the side where the limiting member 43 is installed, and the abutment platform 427 has a second abutment surface 424. During automatic tripping, the second abutment surface 424 cooperates with the working surface 243 of the movable member 24 to complete the automatic tripping of the circuit breaker. The portion of the abutment platform 427 facing the limiting member 43 is recessed to form a third stop surface 4214 to accommodate the limiting member 43 and limit the rotation range of the limiting member 43.

[0107] like Figure 9As shown, the limiting member 43 has a contact surface 434 that engages with the supporting surface 4215. A first protrusion 431 is provided on the side of the limiting member 43 facing away from the contact surface 434, and the first protrusion 431 is perpendicular to the moving plane (i.e., the XY plane) of the movable member 24. A first limiting surface 432 is a surface on the limiting member 43 adjacent to the contact surface 434, and is perpendicular to the moving plane (i.e., the XY plane) of the movable member 24 and faces the second moving path of the movable member 24. During the rotation of the limiting member 43 against the rotational force of the fourth elastic member 44, the first limiting surface 432 gradually approaches the third stop surface 4214 of the second button 42 until contact is made, thereby limiting the maximum rotation angle of the limiting member 43. A second limiting surface 436 is another surface on the limiting member 43 adjacent to the contact surface 434, and is perpendicular to the moving plane (i.e., the XY plane) of the movable member 24 and faces the first moving path of the movable member 24. When the limiting member 43 is in the second limiting position, the second limiting surface 436 contacts the second stop surface 419 of the first button 41. The limiting member 43 has a second protrusion 433 at the edge of the contact surface 434. The second protrusion 433 and the pivot 435 extend in the same direction from the contact surface 434, so that when the fourth elastic member 44 is sleeved on the pivot 435, one of the rotating arms of the fourth elastic member 44 can abut against the second protrusion 433.

[0108] When the limiting member 43, the fourth elastic member 44, and the second button 42 are assembled, the pivot 435 of the limiting member 43 is fitted into the through hole 426 of the second button 42 via a shaft-hole fit, allowing the limiting member 43 to rotate around its axis. The fourth elastic member 44 is sleeved on the pivot 435 and simultaneously fitted into the through hole groove 425. One arm of the fourth elastic member 44 is fitted into the torsion spring arm groove 4211, and the other arm is fitted into the first sector groove 4212 and abuts against the second protrusion 433 of the limiting member 43. The fourth elastic member 44 allows the limiting member 43 to rotate within the through hole groove 426. Figure 12 and Figure 13 The plane shown maintains a pivot about 435 (not in the plane shown). Figure 12 and Figure 13 (As shown in the diagram) It rotates in the first clockwise direction, that is, it tends to rotate clockwise. For example... Figure 12 As shown, when the first button 41 is in the waiting position and the circuit breaker is in the open state, the fourth elastic element 44 causes the first protrusion 431 to abut against the first stop surface 418 of the three sections 4113 of the first button. The first protrusion 431 can prevent the limiting element 43 from being rotated into the three sections 4113 of the first button by the action of the fourth elastic element 44, thus affecting the subsequent closing of the circuit breaker. At this time, the limiting element 43 is in the first limiting position; Figure 13As shown, when the first button is in the working position and the circuit breaker is in the closed state, after the first stop surface 418 is no longer obstructed, the limiting member 43 continues to rotate clockwise under the rotational force of the fourth elastic member 44 until the second limiting surface 436 of the limiting member 43 and the second stop surface 419 of the first button 41 (not in contact) are aligned. Figure 12 and Figure 13 (As shown in the image) contact occurs, at which point the limiting member 43 is in the second limiting position.

[0109] The positional relationship of the first button 41, the second button 42, the limiting component 43, and the moving component 24 after assembly is as follows: Figure 12 As shown, the first button segment 4111 and the second button 42 are arranged side by side on the same side (opposite to the third direction) of the moving plane of the movable member 24. The blocking segment 414 is located on the side of the first button segment 4111 near the movable member 24, the limiting member 43 is located on the side of the second button 42 near the movable member 24, and the abutment platform 427 extends from the second button 42 to the moving plane of the movable member 24. The first button segment 4112 (in Figure 12 (The section 4113 of the first button is blocked and not shown) extends from the first button section 4111 to the moving plane of the movable member 24, and the first button section 4113 is parallel to the first button section 4111.

[0110] like Figure 10 As shown, the intermediate spacer 48 has a bottom hole 481 at its bottom, an arc-shaped support platform 482 located on its bottom and coaxially arranged with the bottom hole 481, and a stop platform 484 also located at its bottom. The bottom hole 481 of the intermediate spacer 48 is fitted onto the base protrusion of the base 5 (not shown in the figure). The support platform 482 mates with the bottom surface 467 of the rotating shaft 46, providing support for the rotating shaft 46. The fifth elastic element 47 is a torsion spring, and the side surface 483 of the support platform and the stop platform 484 are respectively used to abut against the fifth elastic element 47 (not shown in the figure). Figure 10 The two rotating arms are shown in the figure. The support platform 482 and the stop platform 484 are radially distanced from the bottom hole 481, leaving rotation space for the first circumferential wall 464 of the rotating shaft 46.

[0111] Figure 11 (a) and Figure 11 (b) These are the two opposite sides of the rotating shaft 16. It can be seen that the rotating shaft 16 is cylindrical with a through rotating shaft hole 466 in the middle. The side of the rotating shaft 46 closest to the intermediate spacer 48 has a rotating shaft bottom surface 467. A first circumferential wall 464 and a second circumferential wall 465 are provided on both sides of the rotating shaft hole 466 on the rotating shaft bottom surface 467. The side of the rotating shaft 46 furthest from the intermediate spacer 48 has a third connecting rod hole 461, a fourth connecting rod hole 462, and a fifth connecting rod hole 463.

[0112] During assembly, the bottom hole 481 of the intermediate spacer 48, the fifth elastic element 47, and the pivot hole 466 of the pivot shaft 46 are sequentially fitted onto the base protrusion (not shown in the figure) of the base 5. One arm of the fifth elastic element 47 is positioned on the side of the support platform 482 away from the stop platform 484, and the other arm is positioned on the side of the stop platform 484 away from the support platform 482. When the pivot shaft 46 is in... Figure 12 When rotating clockwise in the plane shown, the first circumferential wall 464 of the rotating shaft 46 drives the fifth elastic element 47 to rotate together with the rotating arm placed on one side of the stop platform 484. Therefore, the fifth elastic element 47 makes the rotating shaft 46 have the tendency to keep rotating in the second clockwise direction (counterclockwise direction), thereby driving the first button 41 to pop out and the second button 42 to press down, and the circuit breaker to return to the open state.

[0113] The two ends of the first link 451 are respectively located in the first link hole 416 and the third link hole 461, and are used to connect the first button 41 and the rotating shaft 46; the two ends of the second link 452 are respectively located in the second link hole 429 and the fifth link hole 463, and are used to connect the second button 42 and the rotating shaft 46; the two ends of the third link 453 are respectively located in the fourth link hole 462 and the operating mechanism 6, and are used to connect the rotating shaft 46 and the operating mechanism 6.

[0114] Please refer to the following at the same time Figure 12 and Figure 13 In this embodiment, the first link 451, the second link 452, and the rotating shaft 46 enable the first button 41 and the second button 42 to have different states. That is, at the same time, the first button 41 and the second button 42 are in different states. When the first button 41 is in the pressed / waiting position, the second button 42 is in the pop-up / working position. Figure 12 As shown (although) Figure 12 The circuit breaker is in its initial state, but this can still be used to illustrate the actions of each component of the circuit breaker after pressing the second button 42. When the second button 42 is pressed, it switches from the standby position to the working position and pushes the second link 452 to the right (first direction). The second link 452 drives the rotating shaft 46 to rotate in the second clockwise direction (counterclockwise direction). The rotating shaft 46 drives the first link 451 to move relatively to the left. The first link 451 drives the first button 41 to move to the left, switching the first button 41 from the working position to the standby position. At the same time, the rotating shaft 46 drives the third link 453 to move relatively to the left. The third link 453 drives the operating mechanism 6, such as... Figure 1 As shown, the operating mechanism 6 separates the moving contact 61 from the stationary contact 62, and the circuit breaker is in the open state; Figure 13As shown, when the first button 41 is pressed, the first button 41 switches from the waiting position to the working position and pushes the first linkage 451 to the right (first direction). The first linkage 451 drives the rotating shaft 46 to rotate in the first clockwise direction. The rotating shaft 46 drives the second linkage 452 to move to the left, and the second linkage 452 drives the second button 42 to move to the left, so that the second button 42 switches from the working position to the waiting position. At the same time, the rotating shaft 46 drives the third linkage 453 to move to the right (first direction), and the third linkage 453 pushes the operating mechanism 6, as shown. Figure 2 As shown, the operating mechanism causes the moving contact 61 to contact the stationary contact 62, and the circuit breaker is in the closed state. At this time, the third link passes the dead point position, and its locking force is greater than that of the fifth elastic element 47 (not in the dead point position). Figure 2 The rotational force (shown in the figure) is used to overcome the rotational force and keep the circuit breaker in the closed state.

[0115] [Initial tripped state]

[0116] As described above, to improve electrical safety during installation, the circuit breaker in this embodiment can only be installed in the chassis when it is in the open state. Therefore, the state of the circuit breaker after installation in the chassis is as follows: Figure 12 The initial tripped state is shown below. At this time:

[0117] The moving iron core 11 of the electromagnetic drive component 1 is in the drive stop position, and the linkage component 21 of the transmission component 2 is in the linkage stop position.

[0118] The movable part 24 is in the first active position: under the action of the first elastic member 23, the side of the movable part 24 that is away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the waiting position;

[0119] The second button 42 is in the working position;

[0120] The first button 41 is in the waiting position;

[0121] The limiting member 43 is in the first limiting position: under the action of the fourth elastic member 44, the first protrusion 431 of the limiting member 43 is attached to the first stop surface 418 of the first button 41.

[0122] Please see below. Figures 12-17 The manual and automatic closing and opening processes of the circuit breaker in this embodiment are described.

[0123] [Manual closing]

[0124] When manually closing a circuit breaker that is in the open position, a specific tool is needed to press the first button 41. After completion, the circuit breaker will be in the closed position, and the status of each component will be as follows: Figure 13 As shown:

[0125] The moving iron core 11 is in the drive stop position, and the linkage component 21 is in the linkage stop position;

[0126] When the movable part 24 is in the second active position: during the movement of the first button 41 to the right (first direction), the blocking section 414 drives the movable part 24 to rotate clockwise to the second active position;

[0127] The first button 41 is in the working position: The first button 41 moves from the waiting position to the right (first direction) to the working position;

[0128] The second button 42 is in the waiting position: the first button 41 drives the rotating shaft 46 to rotate clockwise to the end through the first link 451, and then drives the second button 42 to move from the working position to the left (opposite to the first direction) to the waiting position through the second link 452;

[0129] When the limiting member 43 is in the second limiting position: during the movement of the first button 41 to the right (first direction), the first protrusion 431 loses the obstruction of the first stop surface 418, and the limiting member 43 continues to rotate clockwise under the rotational force of the fourth elastic member 44 until the second limiting surface 436 of the limiting member 43 and the second stop surface 419 of the first button 41 (not in the same position) are in the second limiting position. Figure 13 (As shown in the image) Contact;

[0130] The first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom via the first link 451, which in turn drives the operating mechanism 6 to close the circuit via the third link 453. At this time, the linkage mechanism has passed the dead point, and its locking force is greater than the rotational force of the fifth elastic element 47. Therefore, after releasing the first button 41, the circuit breaker is still in the closed state.

[0131] [Manual tripping]

[0132] Similarly, for Figure 13 When manually opening a circuit breaker that is in the closed state, a special tool is needed to press the second button 42. The movement of each component is the reverse of that during manual closing. After completion, the circuit breaker returns to its original position. Figure 12 The circuit breaker is shown in the tripped state. It can be understood that during manual tripping, under the rotational force of the first elastic element 23, the side of the movable element 24 facing away from the working surface 243 is always in contact with the blocking section 414.

[0133] [Automatic closing]

[0134] When automatically closing a circuit breaker that is in the open state, the winding 17 of the electromagnetic drive unit 1 is energized first:

[0135] like Figure 14As shown, the electromagnetic drive unit 1 starts after the winding 17 is energized. Under the action of electromagnetic force, the moving iron core 11 moves from the drive stop position to the right (from A to B) to the drive actuation position, driving the linkage 21 to rotate clockwise (from C to D) from the linkage stop position to the linkage actuation position. During the rotation of the linkage 21, the movable part 24 moves along the first movable path: the movable part 24 gradually disengages from the blocking section 414, and the first elastic member 23 (not in) Figure 14 Under the rotational force (shown in the diagram), the movable part 24 returns to being parallel with the linkage part 21 and then rotates together with the linkage part 21. The working surface 243 of the movable part 24 and the second section 4112 of the first button (not shown in the diagram) Figure 14 As shown in the diagram, the first contact surface 415 contacts the second button 4112, thereby transferring the kinetic energy generated by the electromagnetic drive component 1 to the first button 41, i.e., the movable component 24 completes the pressing of the first button 41; the first button 41 switches from the waiting position to the working position, and correspondingly, the second button 42 changes to the waiting position; during the movement of the first button 41 to the right (first direction), the first protrusion 431 of the limiting component 43 loses the obstruction of the first stop surface 418, and the limiting component 43 continues to rotate clockwise under the rotational force of the fourth elastic component 44 until the second limiting surface 436 of the limiting component 43 (not in the first direction) contacts the first button 4112, thereby transferring the kinetic energy generated by the electromagnetic drive component 1 to the first button 41, i.e., the movable component 24 completes the pressing of the first button 41; the first button 41 switches from the waiting position to the working position, and correspondingly, the second button 42 changes to the waiting position; during the movement of the first button 41 to the right (first direction), the first protrusion 431 of the limiting component 43 loses the obstruction of the first stop surface 418, and the limiting component 43 continues to rotate clockwise under the rotational force of the fourth elastic component 44, until the second limiting surface 436 of the limiting component 43 (not in the first direction) contacts the first button 4112, thereby transferring the kinetic energy generated by the electromagnetic drive component 1 to the first button 41, i.e., the second button 42 changes to the waiting position. Figure 14 (shown in the image) and the second stop surface 419 of the first button 41 (not shown in the image) Figure 14 (As shown in the image) Contact.

[0136] After the circuit is closed, winding 17 is de-energized, and electromagnetic drive 1 stops:

[0137] like Figure 15 As shown, the iron core spring 13 provides a restoring force to the linkage 21, causing the linkage 21 to rotate counterclockwise, which in turn drives the moving iron core 11 to move to the left. The moving iron core 11 and the linkage 21 return to the drive stop position and the linkage stop position. During the counterclockwise rotation of the linkage 21, the side of the movable part 24 facing away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the closed state. Since the blocking section 414 has moved to the right (first direction) relative to the open state at this time, the movable part 24 eventually rotates to the second movable position. During the counterclockwise rotation of the linkage 21, the movable part boss 242 of the movable part 24 (not in the working surface 243) moves to the right. Figure 15 (As shown in the diagram) The moving part 43 slides on the second limiting surface 436 of the limiting member 43, while the limiting member 43 rotates in the second clockwise direction (counterclockwise direction) and abuts against the third stop surface 4214 of the abutment platform 427. That is, the movable member boss 242 can rotate the limiting member 43 toward the second moving path so that the limiting member 43 avoids the movable member 24. Subsequently, the movable member 24 disengages from the limiting member 43, and the limiting member 43 resets under the rotational force of the fourth elastic member 44. The second limiting surface 436 of the limiting member 43 and the second stop surface 419 of the first button 41 (not shown in the diagram) slide on the second limiting surface 436 of the limiting member 43. Figure 15(As shown in the diagram) When in contact, the limiting member 43 is in the second limiting position.

[0138] After automatic closing, the linkage mechanism has passed its dead point, and its locking force is greater than the rotational force of the fifth elastic element 47. Therefore, after the electromagnetic drive element 1 is de-energized, the circuit breaker remains in the dead state. Figure 13 The circuit breaker is shown in the closed state.

[0139] [Automatic tripping]

[0140] When automatically tripping a circuit breaker that is in the closed state, the winding 17 of the electromagnetic drive unit 1 is energized first:

[0141] The electromagnetic drive unit 1 starts after the winding 17 is energized. Under the action of electromagnetic force, the moving iron core 11 moves from the drive stop position to the right (first direction) to the drive actuation position, driving the linkage unit 21 to rotate from the linkage stop position along the first clockwise direction to the linkage actuation position; such as Figure 16 As shown, during the rotation of the linkage 21, the movable member 24 moves along the second movable path: the movable member 24 maintains contact with the blocking section 414 on the one hand, and gradually approaches and contacts the limiting member 43 on the other hand. After the movable member 24 slides along the contact surface, the second button 42 is pressed; specifically, the movable member boss 242 is in contact with the first elastic member 23 (not in the first elastic member 23). Figure 16 (As shown) Under the action of elastic force, it abuts against the first limiting surface 432 and slides on the first limiting surface 432. In this way, the limiting member 43 can prevent the movable member 24 from rotating to the first moving path, such as... Figure 17 As shown, the movable part 24 gradually approaches and abuts against the second abutting surface 424 of the abutting platform 427 until it presses the abutting platform 427, that is, the movable part 24 completes the pressing of the second button 42, so that it switches from the waiting position to the working position, thereby realizing the circuit breaker opening.

[0142] After the circuit breaker trips, the winding 17 of the electromagnetic drive unit 1 is de-energized, and the circuit breaker resumes operation. Figure 12 The circuit breaker is shown in the tripped state.

[0143] Example 2

[0144] In Embodiment 1, the limiting element 43 is installed on the second button 42. In this embodiment, the circuit breaker includes a cover C and a baffle B, and the limiting element A is installed on the cover C to realize the function of automatic closing and opening switching.

[0145] Figure 18 (a) and Figure 18(b) shows two opposing viewpoints of the limiting member A. The limiting member A has a sheet-like structure with a first surface A2 and a second surface A8 on its two sides. The first surface A2 has a first mounting shaft A1, and the second surface A8 has a second mounting shaft A6. A limiting guide groove A5 and a limiting arm groove A7 are formed next to the second mounting shaft A6. The side of the sheet-like structure between the first surface A2 and the second surface A8 has a second limiting surface A3 and a first limiting surface A4.

[0146] like Figure 19 As shown, the baffle B is also a sheet structure, with a first baffle mounting hole B1, a second baffle mounting hole B2, a baffle limiting hole B3, and a baffle mating surface B4 that is close to the three sections 4113 of the first button after assembly.

[0147] like Figure 20 As shown, the cover C is used to cover the base 5, thereby cooperating with the base 5 to protect the internal structure of the circuit breaker. The cover C has a cover mounting surface C1, and the cover mounting surface C1 is provided with a cover limiting hole C2, a cover arm groove C3, a first cover mounting shaft C4, and a second cover mounting shaft C5.

[0148] The result after assembly is as follows Figure 21 As shown, combined with Figures 18-21 The first mounting shaft A1 of the limiting member A is rotatably mounted in the limiting hole C2 of the cover, and the first surface A2 contacts the mounting surface C1 of the cover. The fourth elastic member D is concentrically mounted on the second mounting shaft A6 of the limiting member A. One arm of the fourth elastic member D extends through the limiting guide groove A5 of the limiting member A and is placed in the arm groove C3 of the cover, while the other arm is placed in the limiting arm groove A7 of the limiting member A. The fourth elastic member D allows the limiting member A to... Figure 21 The plane shown maintains a tendency to rotate counterclockwise around the second mounting axis A6, that is, the fourth elastic element D causes the limiting element (A) to maintain a tendency to rotate toward the first moving path. It can be understood that, due to different viewing angles, the limiting element A... Figures 22-27 The plane shown maintains a tendency to rotate around the second mounting axis A6 in the first clockwise direction. The first baffle mounting hole B1 and the second baffle mounting hole B2 of the baffle B are concentrically assembled with the first cover mounting axis C4 and the second cover mounting axis C5 of the cover C, respectively. The second mounting axis A6 is rotatably assembled in the baffle limiting hole B3. Thus, the limiting member A, the baffle B, and the fourth elastic member D are fixed between the cover C and the first button 41, and the baffle contact surface B4 of the baffle B is close to the three segments 4113 of the first button.

[0149] [Initial tripped state]

[0150] like Figure 22 As shown, in this embodiment, when the circuit breaker is in the initial open state:

[0151] The moving iron core 11 of the electromagnetic drive component 1 is in the drive stop position, and the linkage component 21 of the transmission component 2 is in the linkage stop position.

[0152] The movable part 24 is in the first active position: under the action of the first elastic member 23, the side of the movable part 24 that is away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the waiting position;

[0153] The second button 42 is in the working position;

[0154] The first button 41 is in the waiting position;

[0155] It should be noted that, unlike in Embodiment 1 where the extending direction of the movable boss 242 of the movable member 24 points inward to contact and engage with the limiting member 43 on the second button 42, in this embodiment, the extending direction of the movable boss 242 is perpendicular to the paper. Figure 22 The plane in which it is located points out of the paper (in a third direction) so that it can contact and engage with the limiting member A located on the cover body C.

[0156] Please see below. Figures 22-27 The manual and automatic closing and opening processes of the circuit breaker in this embodiment are described.

[0157] [Manual closing]

[0158] When manually closing a circuit breaker that is in the open position, a specific tool is needed to press the first button 41. After completion, the circuit breaker will be in the closed position, and the status of each component will be as follows: Figure 23 As shown:

[0159] The moving iron core 11 is in the drive stop position, and the linkage component 21 is in the linkage stop position;

[0160] When the movable part 24 is in the second active position: during the movement of the first button 41 to the right (first direction), the blocking section 414 drives the movable part 24 to rotate in the first clockwise direction to the second active position. At this time, there is no contact between the movable part boss 242 and the limiting part A.

[0161] The first button 41 is in the working position: The first button 41 moves from the waiting position to the right (first direction) to the working position;

[0162] The second button 42 is in the waiting position: The first button 41 drives the rotating shaft 46 to rotate clockwise to the end via the first connecting rod 451, and then drives the second button 42 to move from the working position to the waiting position via the second connecting rod 452.

[0163] The first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom via the first link 451, and then via the third link 453 (not in... Figure 23(As shown in the image) Drive the operating mechanism 6 (not shown in the image) Figure 23 (As shown in the diagram) the closing is achieved. At this time, the linkage mechanism has passed the dead point, and its locking force is greater than that of the fifth elastic element 47 (not shown in the diagram). Figure 23 The circuit breaker remains closed even after the first button 41 is released due to the rotational force shown in the diagram.

[0164] [Manual tripping]

[0165] Similarly, for Figure 23 When manually opening a circuit breaker that is in the closed state, a special tool is needed to press the second button 42. The movement of each component is the reverse of that during manual closing. After completion, the circuit breaker returns to its original position. Figure 22 The circuit breaker is shown in the tripped state. It can be understood that during manual tripping, under the rotational force of the first elastic element 23, the side of the movable element 24 facing away from the working surface 243 is always in contact with the blocking section 414.

[0166] [Automatic closing]

[0167] When automatically closing a circuit breaker that is in the open state, the winding 17 of the electromagnetic drive unit 1 is energized first:

[0168] like Figure 24 As shown, the electromagnetic drive unit 1 starts after the winding 17 is energized. Under the action of electromagnetic force, the moving iron core 11 moves from the drive stop position to the right (from E to F) to the drive actuation position, driving the linkage 21 to rotate clockwise (from G to H) from the linkage stop position to the linkage actuation position. During the rotation of the linkage 21, the movable part 24 gradually disengages from the blocking section 414. Under the action of the rotational force of the first elastic element 23, the movable part 24 returns to being parallel with the linkage 21 and then rotates with the linkage 21. The working surface 243 of the movable part 24 abuts against the first contact surface 415 of the first button 41 (not in the first contact surface 415). Figure 24 As shown in the figure, the kinetic energy generated by the electromagnetic drive 1 is transmitted to the first button 41. The first button 41 moves from the waiting position to the right (first direction) to the working position. Correspondingly, the second button 42 is in the waiting position.

[0169] After the circuit breaker is closed by power-on, the winding 17 of the electromagnetic drive unit 1 is de-energized:

[0170] like Figure 25As shown, the iron core spring 13 provides a restoring force to the linkage 21, causing the linkage 21 to rotate in the second clockwise direction (counterclockwise direction), driving the moving iron core 11 to move to the left. The moving iron core 11 and the linkage 21 return to the drive stop position and the linkage stop position. During the counterclockwise rotation of the linkage 21, the side of the movable part 24 away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the closed state. Since the blocking section 414 has moved to the right (first direction) relative to the open state at this time, the movable part 24 eventually rotates to the second movable position. During the counterclockwise rotation of the linkage 21, the movable part boss 242 of the movable part 24 slides on the second limiting surface A3 of the limiting part A, and at the same time causes the limiting part A to rotate in the second clockwise direction (counterclockwise direction). After the two are out of contact, they return to the position of the limiting part 43 in the open state under the action of the rotational force of the fourth elastic element 44.

[0171] After automatic closing, the linkage mechanism has passed its dead point, and its locking force is greater than the rotational force of the fifth elastic element 47. Therefore, after the electromagnetic drive element 1 is de-energized, the circuit breaker remains in the dead state. Figure 23 The circuit breaker is shown in the closed state.

[0172] [Automatic tripping]

[0173] When automatically tripping a circuit breaker that is in the closed state, the winding 17 of the electromagnetic drive unit 1 is energized first:

[0174] like Figure 26 As shown, the electromagnetic drive unit 1 starts after the winding 17 is energized. Under the action of electromagnetic force, the moving iron core 11 moves from the drive stop position to the right (first direction) to the drive actuation position, driving the linkage unit 21 to rotate clockwise from the linkage stop position to the linkage actuation position. During the rotation of the linkage unit 21, the side of the movable member 24 facing away from the working surface 243 remains in contact with the blocking section 414. The movable member boss 242 of the movable member 24 moves to the right (first direction) and rotates clockwise under the guidance of the first limiting surface A4 of the limiting member A. Figure 27 As shown, the movable part 24 gradually approaches and abuts against the second contact surface 424 of the second button 42 (not in the second contact surface 424). Figure 27 (As shown in the diagram), which in turn drives the second button 42 to move from the waiting position to the right (first direction) to the working position, thereby achieving circuit breaker opening.

[0175] After the circuit breaker trips, the winding 17 of the electromagnetic drive unit 1 is de-energized, and the circuit breaker resumes operation. Figure 22 The circuit breaker is shown in the tripped state.

[0176] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic opening and closing mechanism for a circuit breaker, comprising a base (5); An electromagnetic drive unit (1) is disposed within the base (5) and can be driven and reset along a straight line; The first button (41) and the second button (42) are movably disposed within the base (5) for opening and closing the circuit breaker; The movable part (24) is movably connected to the electromagnetic drive (1), and the electromagnetic drive (1) drives the movable part to move the first button (41) or the second button (42) within the base (5); in, The movable part (24) includes a first movable position and a second movable position. In the first movable position, it cooperates with the first button (41), and the electromagnetic drive (1) can drive the movable part (24) to contact and move the first button (41). In the second movable position, the movable part (24) cooperates with the second button (42), and the electromagnetic drive (1) can drive the movable part (24) to contact and move the second button (42).

2. The automatic opening and closing mechanism as described in claim 1, characterized in that: The automatic opening and closing mechanism also includes: Linkage component (21), one end of which is hinged to the electromagnetic drive component (1), and the other end is connected to the movable component (4). The movable part (24) is provided with a first elastic element (23); one end of the first elastic element (23) is connected to the movable part (24), and the other end is connected to the linkage element (21), so that the movable part (24) is rotatably connected to the linkage element (21).

3. The automatic opening and closing mechanism as described in claim 1, characterized in that: The first button (41) has a first waiting position and a first working position in the base (5); the second button (42) has a second waiting position and a second working position in the base (5), respectively corresponding to the first working position and the first waiting position of the first button (41).

4. The automatic opening and closing mechanism as described in claim 3, characterized in that: The first button (41) includes: The blocking segment (414) can interfere with the movable member (24) when the first button (41) is in the first working position, so that the movable member (24) is in the second active position; the blocking segment (414) can avoid the movable member (24) when the first button (41) is in the first waiting position, so that the movable member (24) is in the first active position.

5. The automatic opening and closing mechanism as described in claim 4, characterized in that: The electromagnetic drive (1) can drive the movable part (24) to move along the first active path and then contact and push the first button (41) to the first working position; The electromagnetic drive (1) can drive the movable part (24) to move along the second movable path and then contact and push the second button (42) to the second working position; The automatic opening and closing mechanism also includes: A limiting member (43) is disposed between the first active path and the second active path so that the limiting member (43) prevents the active member (24) from moving to the first active path when the active member (24) moves along the second active path.

6. The automatic opening and closing mechanism as described in claim 5, characterized in that: The limiting member (43) has a first limiting surface (432) that is perpendicular to the moving plane of the movable member (24) and faces the second moving path. The movable member (24) has a movable member boss (242) extending outward from the moving plane; The limiting member (43) abuts against the movable member boss (242) through the first limiting surface (432) to prevent the movable member (24) from moving to the first moving path.

7. The automatic opening and closing mechanism as described in claim 6, characterized in that: The limiting member (43) also has a second limiting surface (436) perpendicular to the moving plane of the movable member (24) and facing the first moving path; the movable member boss (242) can abut against the second limiting surface (436) and drive the limiting member (43) toward the second moving path so that the limiting member (43) avoids the movable member (24).

8. The automatic opening and closing mechanism as described in claim 5, characterized in that: The first button (41) includes a first button segment (4111), a first button segment (4112), and a first button segment (4113) connected in sequence. The first button segment (4111) and the second button (42) are arranged side by side on the same side of the moving plane of the movable part (24); The blocking segment (414) is connected to the first button segment (4111) on the side near the movable member (24), the first button segment (4112) extends from the first button segment (4111) to the moving plane of the movable member (24), and the first button segment (4113) is parallel to the first button segment (4111); the first button segment (4112) contacts the movable member (24) so ​​that the movable member (24) pushes the first button (41).

9. The automatic opening and closing mechanism as described in claim 8, characterized in that: The limiting member (43) has a first protrusion (431) perpendicular to the moving plane of the movable member (24). The first protrusion (431) is configured to abut against the first button segment (4113) when the second button (42) is in the second working position.

10. The automatic opening and closing mechanism as described in claim 5, characterized in that: The second button (42) is provided with an abutment (427) extending to the moving plane of the movable member (24), the abutment (427) contacting the movable member (24) to cause the movable member (24) to push the second button (42).

11. The automatic opening and closing mechanism as described in claim 10, characterized in that: The portion of the abutment (427) facing the limiting member (43) is recessed to form a third stop surface (4214) to accommodate the limiting member (43) and limit the range of movement of the limiting member (43).

12. The automatic opening and closing mechanism as described in any one of claims 5-11, characterized in that: The second button (42) has a mounting portion for the limiting member (43) on the side near the movable member (24). The limiting member (43) is provided with a fourth elastic member (44) so ​​that the limiting member (43) tends to rotate toward the first active path. The limiting member (43) and the fourth elastic member (44) are disposed on the mounting part of the limiting member (43).

13. The automatic opening and closing mechanism as described in any one of claims 5-8 and 10-11, characterized in that: It also includes a cover (C) for covering the base (5), and the limiting member (43) is disposed on the cover (C).

14. The automatic opening and closing mechanism as described in claim 13, characterized in that: The cover (C) has a cover mounting surface (C1), and the limiting member (43) is provided with a fourth elastic member (44) so ​​that the limiting member (43) maintains a tendency to rotate toward the first active path; The limiting member (43) and the fourth elastic member (44) are disposed on the cover mounting surface (C1).

15. The automatic opening and closing mechanism as described in claim 14, characterized in that: It also includes a baffle (B); the baffle (B) is fixed to the cover (C) to limit the limiting member (43) and the fourth elastic member (44) between the cover mounting surface (C1) and the baffle (B).

16. A circuit breaker, comprising an automatic opening and closing mechanism as described in any one of claims 1-15, a moving contact (61), a stationary contact (62), and an operating mechanism; The first button (41) and the second button (42) of the automatic opening and closing mechanism are both connected to the moving contact (61) through the operating mechanism, so as to drive the moving contact (61) to contact or separate from the stationary contact (62).

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