Operating system and circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to an operating system and a circuit breaker comprising the operating system, the operating system comprises an operating piece, an electromagnetic system and a moving contact mechanism, the electromagnetic system comprises a magnetic production assembly ejector rod, and two ends of the ejector rod are respectively in transmission connection with the operating piece and the moving contact mechanism. The operating member is switched between a closing position and an opening position and drives the moving contact mechanism to be switched between the closing position and the opening position through the push rod. The electromagnetic system works when overload and / or short-circuit current flows through the moving contact mechanism to drive the ejector rod to drive the moving contact mechanism to move from a closed position to an open position; the operating system is simple in structure and small in occupied space, and the circuit breaker is simple in structure.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to an operating system and a circuit breaker. Background Art

[0002] The basic structure of existing circuit breakers, especially intelligent circuit breakers, generally includes a short-circuit protection module, an overload protection module, an operating mechanism and an electric operation module. The short-circuit protection module and the overload protection module are generally set according to the different current specifications of the circuit breaker, and the electric operation module uses a motor and a gear to achieve remote operation; the existing circuit breaker must use the short-circuit protection module and the overload protection module to respectively achieve short-circuit protection and overload protection functions, which are complex in structure and occupy a large space. In addition, the existing circuit breaker lacks a structure to prevent the circuit breaker from being installed in a circuit breaker installation cabinet (such as a distribution cabinet, a control cabinet or other electrical cabinet) in the closed state. Summary of the invention

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and provide an operating system with a simple structure and small occupied space.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An operating system, comprising an operating member which is arranged to move back and forth and has a closing position and an opening position, an electromagnetic system and a moving contact mechanism which has a closing position and an opening position, wherein the electromagnetic system comprises a magnetic generating component and a push rod which is movably inserted in the middle of the magnetic generating component, wherein both ends of the push rod are respectively connected to the operating member and the moving contact mechanism by transmission, and the operating member switches between the closing position and the opening position, and the moving contact mechanism is driven to switch between the closing position and the opening position by the push rod;

[0006] The electromagnetic system works when an overload and / or short-circuit current flows through the moving contact mechanism to drive the ejector rod to drive the moving contact mechanism to move from a closed position to an open position.

[0007] Furthermore, the electromagnetic system is a magnetic holding system.

[0008] Furthermore, the magnetic generating component includes a coil component, a yoke and a permanent magnet arranged around the coil component, the permanent magnet is sleeved on the outer side of the middle part of the coil component and is located between the two electromagnetic coils of the coil component; the electromagnetic system also includes a moving iron core slidably arranged in the middle part of the coil component, the moving iron core is connected to the top rod and is arranged to move synchronously, and the two ends of the top rod protrude on both sides of the axial direction of the coil component respectively; the electromagnetic system 3-0 also includes a first static iron core and a second static iron core arranged relatively along the axial direction of the coil component 3-01, when one end of the moving iron core 3-02 is attracted to the first static iron core, the top rod 3-05 is in the first position, and when the moving iron core 3-02 is attracted to the second static iron core, the top rod 3-05 is in the second position.

[0009] Furthermore, the push rod includes a front push rod and a rear push rod, one end of the front push rod is inserted in the moving iron core and the other end is transmission connected to the operating member, and one end of the rear push rod is inserted in the moving iron core and the other end is transmission connected to the moving contact mechanism.

[0010] Furthermore, the operating system also includes a control system and a sampling device, the sampling device is coupled to the moving contact mechanism for collecting the current flowing through the moving contact mechanism, and the control system is connected to the electromagnetic system and the sampling device, respectively; when a short circuit or overload current flows through the moving contact mechanism, the electromagnetic system is controlled by the control system and actuates, and drives the moving contact mechanism from a closed position to an open position through a push rod.

[0011] Further, the sampling device is a manganese copper shunt connected in series with the moving contact mechanism; or, the sampling device is a mutual inductor coupled with the moving contact mechanism.

[0012] Furthermore, the moving contact mechanism is rotatably arranged; the operating system also includes a rear connecting rod, which is fixedly connected to one end of the top rod and is hinged to the moving contact mechanism.

[0013] Furthermore, the rear connecting rod is provided with a rear connecting rod cavity and a rear connecting rod socket, the rear connecting rod socket is arranged on the side wall of the rear connecting rod cavity, the top rod includes a rear rod body and a rear connecting cap, the outer diameter of the rear connecting cap is larger than the outer diameter of the rear rod body, the inner diameter of the rear connecting rod socket is adapted to the outer diameter of the rear rod body and is smaller than the outer diameter of the rear connecting cap, the rear rod body is inserted into the rear connecting rod socket and the rear connecting cap is placed in the rear connecting rod cavity.

[0014] Furthermore, the rear connecting rod is hinged to the contact support through a rear connecting shaft; among the rear connecting rod and the contact support, the rear connecting shaft is arranged on one to move synchronously therewith, and the other is provided with a waist-shaped hole matching with the rear connecting shaft.

[0015] A circuit breaker comprises the operating system; the operating system further comprises a front connecting rod connected to the operating member and moving synchronously, the front connecting rod is also drivingly connected to one end of the top rod; the circuit breaker further comprises a shell and a second locking member, the operating member is slidably arranged on the shell, and the operating system is arranged in the shell; the second locking member comprises a second locking protrusion; when the circuit breaker is closed, the second locking member is driven by the front connecting rod to rotate forward so that the second locking protrusion protrudes outside the shell; when the circuit breaker is opened, the second locking member rotates reversely so that the second locking protrusion moves toward the inside of the shell.

[0016] Further, the second locking member further includes a second locking member mounting portion and a second locking member front arm. The second locking member is rotatably arranged on the housing through the second locking member mounting portion. One end of the second locking member front arm is connected to the second locking member mounting portion, and the other end is provided with a second locking protrusion. When the circuit breaker is closed, the second locking member front arm is driven by the front link to rotate the second locking member forward. When the circuit breaker is in the closed state, the front link restricts the reverse rotation of the second locking member.

[0017] Further, when the circuit breaker is tripped, the second locking member is driven by the front link to rotate reversely, causing the second locking protrusion to move towards the interior of the housing.

[0018] In the operating system of the present utility model, the ejector rod of the electromagnetic system serves both as a transmission structure between the operating member and the moving contact mechanism, and the electromagnetic system also serves as a mechanism for achieving overload and / or short-circuit protection. Compared with the existing circuit breaker, the bimetallic element for achieving overload protection and / or the electromagnetic release for achieving short-circuit protection can be cancelled, which is beneficial to reducing the number of components of the circuit breaker, simplifying the structure of the circuit breaker, providing a larger space for the layout of each component of the circuit breaker, and further being beneficial to reducing the overall size specification of the circuit breaker.

[0019] In addition, the second locking member prevents the circuit breaker from being installed into the circuit breaker installation cabinet in the closed state, ensuring the personal safety of the operator. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the circuit breaker of the present utility model, showing at least the structure of the housing;

[0021] Figure 2 is a projection view of the circuit breaker of the present utility model, showing the structure of the operating system;

[0022] Figure 3 is a schematic structural diagram of the operating system of the present utility model;

[0023] Figure 4 is another schematic structural diagram of the operating system of the present utility model;

[0024] Figure 5 is a schematic sectional view of the operating system of the present utility model;

[0025] Figure 6 is an exploded view of the operating system of the present utility model;

[0026] Figure 7 is a schematic diagram showing the cooperation relationship between the front link and the second locking member and the state of the first locking member when the circuit breaker of the present utility model is in the closed state;

[0027] Figure 8This is a schematic diagram showing the mating relationship between the front link and the second locking member and the state of the first locking member when the circuit breaker of the present utility model is in the open state and the operating member is pulled out.

[0028] Explanation of reference numerals

[0029] Housing 1, mounting guiding structure 1-1, first jack 1-20, second jack 1-21, signal jack 1-3, signal window 1-4, third jack 1-50, fourth jack 1-51, operating member mounting hole 1-6;

[0030] Operating member 2, indicating hole 2-1, mounting cavity 2-2, operating member shaft groove 2-3, operating member shaft hole 2-4;

[0031] Operating mechanism 3, electromagnetic system 3-0, magnetic generating component 3-0m, coil assembly 3-01, moving iron core 3-02, yoke 3-03, permanent magnet 3-04, ejector rod 3-05, front ejector rod 3-050, front rod body 3-0500, front connecting cap 3-0501, rear ejector rod 3-051, rear rod body 3-0510, rear connecting cap 3-0511, front link 3-1, front link driving part 3-11, front link cavity 3-110, front link jack 3-111, front link connecting part 3-12, first transition surface 3-121 of front link, limiting surface 3-122 of front link, second transition surface 3-123 of front link, front link connecting arm 3-120, front link connecting hole 3-1200, rear link 3-2, rear link cavity 3-20, rear link jack 3-21, rear link connecting hole 3-22, front connecting shaft 3-31, rear connecting shaft 3-32;

[0032] Contact system 4, moving contact mechanism 4-1, contact support 4-10, support connecting hole 4-100, moving contact 4-11, moving contact shaft 4-12, static contact 4-2;

[0033] Third terminal 5-0, fourth terminal 5-1;

[0034] Arc extinguishing system 6;

[0035] Sampling device 7;

[0036] First terminal 8-0, second terminal 8-1;

[0037] Auxiliary circuit structure 9;

[0038] First sampling terminal 10-0, second sampling terminal 10-1;

[0039] Control system 11, circuit board 11p, first sampling terminal 11-0, second sampling terminal 11-1;

[0040] Signal terminal 12;

[0041] Indicator 13, indicating part 13-0, indicator connecting part 13-1, indicator mounting part 13-2, first actuated part 13-30 of the indicator, second actuated part 13-31 of the indicator;

[0042] First locking part 14, first locking projection 14-1, actuated part 14-2 of the first locking part;

[0043] Second locking part 15, second locking projection 15-0, rear arm 15-1 of the second locking part, mounting part 15-2 of the second locking part, front arm 15-3 of the second locking part, mating part 15-4 of the second locking part, transition surface 15-41 of the mating part, limiting surface 15-40 of the mating part;

[0044] Reset spring 16 of the first locking part;

[0045] Trigger mechanism 17;

[0046] Reset spring 18 of the operating part;

[0047] Connecting conductor 20. Specific embodiments

[0048] The following embodiments given in conjunction with the drawings further illustrate the specific embodiments of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the description of the following embodiments.

[0049] As Figure 1-2As shown, the circuit breaker of the utility model includes a housing 1 and a main circuit structure, and the main circuit structure includes an operating member 2 slidably arranged on the housing 1, and an operating mechanism 3, a contact system 4, an arc extinguishing system 6, and a control system 11, which are respectively arranged in the housing 1. The operating member 2 has an opening position and a closing position, and the operating member 2 switches between the opening position and the closing position by reciprocating sliding. The operating mechanism 3 includes an electromagnetic system 3-0, and the electromagnetic system 3-0 includes a magnetic component 3-0m and a top rod 3-05 movably inserted in the middle of the magnetic component 3-0m, and the top rod 3-05 has a first position and a second position and switches between the first position and the second position by reciprocating movement. The contact system 4 includes a moving contact mechanism 4-1 and a stationary contact 4-2 used in conjunction with each other. The moving contact mechanism 4-1 has a closed position and an open position. The moving contact mechanism 4-1 is closed with the stationary contact 4-2 when in the closed position (i.e., the contact system 4 is in the closed state), and is disconnected from the stationary contact 4-2 when in the open position (i.e., the contact system 4 is in the open state). One end of the top rod 3-05 is connected to the moving contact mechanism 4-1 by transmission. The top rod 3-05 switches between the first position and the second position to drive the moving contact mechanism 4-1 to switch between the closed position and the open position. The arc extinguishing system 6 is used in conjunction with the contact system 4 to extinguish the arc generated when the contact system 4 is closed and opened. The operating member 2 switches between the closing position and the opening position and drives the moving contact mechanism 4-1 to switch between the closing position and the opening position through the electromagnetic system 3-0, so that the contact system 4 switches between the closing state and the opening state, that is, the circuit breaker of the utility model switches between the closing state and the opening state. The electromagnetic system 3-0 works under the control of the control system 11 and drives the top rod 3-05 to switch between the first position and the second position, so that the top rod 3-05 drives the moving contact mechanism 4-1 to switch between the closing position and the opening position. Obviously, in the circuit breaker of the utility model, the closing position of the operating member 2, the first position of the top rod 3-05, the closing position of the moving contact mechanism 4-1, the closing state of the contact system 4, and the closing state of the circuit breaker correspond to each other, and the opening position of the operating member 2, the second position of the top rod 3-05, the opening position of the moving contact mechanism 4-1, the opening state of the contact system, and the opening state of the circuit breaker correspond to each other. Furthermore, both ends of the push rod 3-05 are respectively in transmission cooperation with the operating member 2 and the moving contact mechanism 4-1.

[0050] Specifically, Figure 1-4 As shown, the two ends of the push rod 3-05 are respectively connected to the operating member 2 and the moving contact mechanism 4-1; one end of the operating member 2 is inserted into the shell 1 and the other end protrudes from the outside of the shell 1 for external force operation. The external force can be pressed and pulled by the operating member 2, thereby driving the contact system 4 to close and open (that is, driving the circuit breaker to close and open) through the operating mechanism 3.

[0051] Specifically, Figure 2-4 As shown in Figures 6 and 7, the moving contact mechanism 4-1 includes a contact support 4-10 and a moving contact 4-11 carried on the contact support 4-10. Furthermore, the moving contact mechanism 4-1 is rotatably arranged by the contact support 4-10. Furthermore, the moving contact mechanism 4-1 also includes a contact spring (not shown in the drawings of the specification); the contact support 4-1 is rotatably arranged on the housing 1 by the moving contact shaft 4-12, and the moving contact 4-11 and the contact support 4-10 are rotatably arranged relative to each other, thereby allowing the moving contact 4-11 to continue to rotate a certain angle relative to the static contact 4-2 after the static contact 4-2 is closed, so that the contact spring applies a force to the moving contact 4-11 to press the static contact 4-2 to ensure reliable contact between the two.

[0052] As another embodiment, the movable contact mechanism 4 - 1 is arranged to move as a whole, and the movable contact mechanism 4 - 1 switches between a closed position and an open position by reciprocating movement to close and open with the stationary contact 4 - 2 .

[0053] Furthermore, the moving contact mechanism 4-1 is provided with two groups of moving contacts 4-11 arranged in parallel, which can effectively reduce the electric repulsion between the moving / static contacts and improve the current carrying capacity.

[0054] Furthermore, the operating mechanism 3 also includes a rear connecting rod 3-2, which is connected to one end of the top rod 3-05 of the electromagnetic system 3-0 and is hinged to the contact support 4-11. The axis of the hinge shaft between the rear connecting rod 3-2 and the contact support 4-11 is arranged parallel to the rotation axis of the moving contact mechanism 4-1 and spaced apart.

[0055] Specifically, the rear connecting rod 3-2 is provided with a rear connecting rod cavity 3-20 and a rear connecting rod socket 3-21, the rear connecting rod socket 3-21 is arranged on the side wall of the rear connecting rod cavity 3-20 (the side wall is close to the magnetic generating component 3-0m of the magnetic holding system 3-0), the rear rod body 3-0510 of the push rod 3-05 is inserted into the rear connecting rod socket 3-21 and the outer diameter of the rear rod body 3-0510 is adapted to the inner diameter of the rear connecting rod socket 3-21, the rear connecting cap 3-0511 of the push rod 3-05 is arranged in the rear connecting rod cavity 3-20 and the rear connecting rod The outer diameter of the connecting cap 3-0511 is larger than the inner diameter of the rear connecting rod socket 3-21 and the outer diameter of the rear rod body 3-0510; the rear connecting rod 3-2 includes a first rear connecting rod opening and a second rear connecting rod opening arranged on one side thereof, the first rear connecting rod opening is connected to the rear connecting rod cavity 3-20, the second rear connecting rod opening is connected to the rear connecting rod socket 3-21, the rear rod body 3-0510 enters the rear connecting rod socket 3-21 through the second rear connecting rod opening, and the rear connecting cap 3-0511 enters the rear connecting rod cavity 3-20 through the first rear connecting rod opening.

[0056] Specifically, the rear link 3-2 is hinged to the contact support 4-11 through the rear connecting shaft 3-32. Further, in the rear link 3-2 and the contact support 4-10, the connecting shaft 3-32 is arranged on one to move synchronously therewith, and the other is provided with a kidney-shaped hole for mating with the rear connecting shaft 3-32. Further, the rear link 3-2 is provided with a rear link connection hole 3-22 for inserting and adapting to the rear connecting shaft 3-32. The rear connecting shaft 3-32 is inserted into the rear link connection hole 3-22 and moves synchronously with the rear link 3-2. The contact support 4-11 is provided with a kidney-shaped hole, and this kidney-shaped hole is a support connection hole 4-100 for inserting the rear connecting shaft 3-32.

[0057] As other embodiments, the ejector rod 3-05 can also be directly hinged to the contact support 4-11, and the detailed connection manner between the two can be realized by the prior art and will not be described in detail here.

[0058] Further, the main circuit structure further includes a sampling device 7 coupled to the contact system 4 (that is, coupled to the moving contact mechanism 4-1). The sampling device 7 is used to collect the current signal flowing through the contact system 4 and is connected to the control system 11. When an overload and / or short-circuit current flows through the contact system 4 (that is, the control system 11 detects an overload and / or short-circuit current through the sampling device 7), the control system 11 controls the electromagnetic system 3-0 to operate and drives the ejector rod 3-05 to move from the first position to the second position, thereby driving the moving contact mechanism 4-1 to move from the closed position to the open position. In the circuit breaker of the present invention, the electromagnetic system 3-0 serves both as a power mechanism for driving the contact system 4 to close and open and as a mechanism for realizing overload and / or short-circuit protection. Compared with the existing circuit breaker, the bimetallic element for realizing overload protection and / or the electromagnetic tripping mechanism for realizing short-circuit protection can be cancelled, which is beneficial to reducing the number of components of the circuit breaker, simplifying the structure of the circuit breaker, providing a larger space for the layout of each component of the circuit breaker, and further being beneficial to reducing the overall size specification of the circuit breaker. In the circuit breaker of the present invention, when an overload and short-circuit current flows through the contact system 4, the control system 11 controls the electromagnetic system 3-0 to operate and drives the ejector rod 3-05 to move from the first position to the second position. That is, the electromagnetic system 3-0 serves as both an overload protection and a short-circuit protection mechanism at the same time.

[0059] Specifically, the sampling device 7 is a manganin shunt connected in series with the contact system 4 (that is, connected in series with the moving contact mechanism 4-1); or the sampling device 7 is a transformer coupled to the contact system 4 (that is, coupled to the moving contact mechanism 4-1). For example, the transformer can be coupled to the contact system 4 by sleeving on a conductor connected in series with the contact system 4. In the circuit breaker of the present invention, the sampling device 7 preferably adopts a manganin shunt.

[0060] Furthermore, the main circuit structure further includes a first terminal 8-0 and a third terminal 5-0, and the first terminal 8-0, the contact system 4 and the third terminal 5-0 are connected in series in sequence. Furthermore, the third terminal 5-0, the static contact 4-2, the moving contact mechanism 4-1 and the first terminal 8-0 are connected in series in sequence.

[0061] Specifically, the first terminal 8-0 is the incoming terminal of the main circuit structure, and the third terminal 5-0 is the outgoing terminal of the main circuit structure; the sampling device 7 is a manganese copper shunt; the third terminal 5-0, the static contact 4-2, the moving contact mechanism 4-1, the sampling device 7 and the first terminal 8-0 are connected in series in sequence; or, the third terminal 5-0, the sampling device 7, the static contact 4-2, the moving contact mechanism 4-1 and the first terminal 8-0 are connected in series in sequence.

[0062] Furthermore, the main circuit structure also includes a connecting conductor 20, and the static contact 4-2 is electrically connected to the third terminal 5-0 via the connecting conductor 20.

[0063] Furthermore, the main circuit structure also includes a signal terminal 12 connected to the control system 11, and the control system 11 communicates with external equipment through the signal terminal 12. For example, the control system 11 transmits data through the signal terminal 12 and receives external control signals (remote closing signal and remote opening signal) through the signal terminal 12.

[0064] Furthermore, the circuit breaker of the utility model also includes a secondary circuit structure 9 arranged in the housing 1, and the secondary circuit structure 9 is a straight-through circuit. The so-called "straight-through circuit" refers to a circuit structure in which there is no operable breakpoint in the circuit (for example, there is no breakpoint realized by the moving contact and the static contact, the breakpoint is closed when the moving contact and the static contact are closed, and the breakpoint is disconnected when the moving contact and the static contact are disconnected) and it can be directly connected to the external circuit. Further, the secondary circuit structure 9 includes a second terminal 8-1, a straight-through conductor and a fourth terminal 5-1 connected in series in sequence. Further, the straight-through conductor is a conductive plate or a soft conductor. It should be pointed out that the circuit breaker of the utility model can only be provided with a main circuit structure, and the circuit breaker is a single-phase circuit breaker (that is, a 1P type circuit breaker); the circuit breaker of the utility model can also be provided with a main circuit structure and a secondary circuit structure at the same time, and the circuit breaker is a two-phase circuit breaker (that is, a 1P+1N type circuit breaker). In addition, multiple circuit breakers of this embodiment can be arranged side by side, and the operating parts and operating system of the circuit breaker can cooperate with each other to realize a two-phase (2P type circuit breaker) or multi-phase (3P or 4P) circuit breaker.

[0065] Specifically, the second terminal 8 - 1 is an incoming terminal of the secondary loop structure 9 , and the fourth terminal 5 - 1 is an outgoing terminal of the secondary loop structure 9 .

[0066] like Figure 2As shown, the control system 11 includes a circuit board 11p.

[0067] Furthermore, the control system 11 further includes a first sampling terminal 11-0 connected to the circuit board 11p. The first sampling terminal 11-0 is electrically connected to the connection conductor 20 to detect the voltage signal, current signal, and on / off state of the main circuit structure, thereby judging the current state of the circuit breaker of the present utility model. Further, the connection conductor 20 is a conductive plate. The first sampling terminal 11-0 is arranged on the circuit board 11p, and the conductive plate is in plug-in fit with the first sampling terminal 11-0.

[0068] Furthermore, the control system 11 further includes a second sampling terminal 11-1 electrically connected to the circuit board 11p and the through conductor respectively, for detecting the voltage signal and current signal of the auxiliary circuit structure. Further, the through conductor is a conductive plate. The second sampling terminal 11-1 is arranged on the circuit board 11p, and the conductive plate is in plug-in fit with the second sampling terminal 11-1.

[0069] As Figure 2-6 shown, the electromagnetic system 3-0 is a magnetic latching system.

[0070] Furthermore, the magnetic component 3-0m includes a coil component 3-01, a yoke 3-03 arranged around the coil component 3-01, and a permanent magnet 3-04. The permanent magnet 3-04 is sleeved outside the middle of the coil component 3-01 and is located between two electromagnetic coils of the coil component 3-01. The electromagnetic system 3-0 further includes a moving iron core 3-02 slidably arranged in the middle of the coil component 3-01. The moving iron core 3-02 is connected to the ejector rod 3-05 and is arranged to move synchronously. Both ends of the ejector rod 3-05 protrude from both axial sides of the coil component 3-01. The electromagnetic system 3-0 further includes a first static iron core and a second static iron core arranged oppositely along the axial direction of the coil component 3-01. When one end of the moving iron core 3-02 is attracted to the first static iron core, the ejector rod 3-05 is in the first position. When the moving iron core 3-02 is attracted to the second static iron core, the ejector rod 3-05 is in the second position. The ejector rod 3-05 reciprocates along the axial direction of the coil component 3-01 and switches between the first position and the second position. Further, the yoke 3-03 is of a square frame structure, and the first static iron core and the second static iron core are served by a pair of side walls of the yoke 3-03. Further, the yoke 3-03 includes a yoke seat of a U-shaped structure and a yoke end plate. The open end of the U-shaped structure of the yoke seat is connected to the yoke end plate. One of the yoke end plate and the bottom plate of the U-shaped structure of the yoke seat serves as the first static iron core and the other serves as the second static iron core.

[0071] It should be pointed out that the electromagnetic system 3-0 can also adopt other structural types of existing magnetic holding systems. For example, the difference between an existing magnetic holding system and this embodiment is that it includes two groups of permanent magnets, and the two groups of permanent magnets are respectively arranged on the outside of the axial ends of the coil assembly 3-01, and the electromagnetic coil of the coil assembly 3-01 is located between the two groups of permanent magnets.

[0072] Furthermore, the push rod 3-05 includes a front push rod 3-050 and a rear push rod 3-051, one end of the front push rod 3-050 is inserted in the moving iron core 3-02 and the other end protrudes outside the axial end of the electromagnetic coil and is connected to the operating member 2, and one end of the rear push rod 3-051 is inserted in the moving iron core 3-02 and the other end protrudes outside the axial end of the electromagnetic coil and is connected to the moving contact mechanism 4-1.

[0073] Specifically, the front push rod 3-05 includes a front rod body 3-0500 and a front connecting cap 3-0501, one end of the front rod body 3-0500 is connected to the front connecting cap 3-0501 and the other end is connected to the moving iron core 3-02 (for example, one axial end of the moving iron core 3-02 is inserted into the moving iron core 3-02); the rear push rod 3-051 includes a rear rod body 3-0510 and a rear connecting cap 3-0511, one end of the rear rod body 3-0510 is connected to the rear connecting cap 3-0511 and the other end is connected to the moving iron core 3-02 (for example, the other axial end of the moving iron core 3-02 is inserted into the moving iron core 3-02). Furthermore, the front rod body 3-0500 and the front connecting cap 3-0501 are an integrated structure or a detachable split structure; the rear rod body 3-0510 and the rear connecting cap 3-0511 are an integrated structure or a detachable split structure.

[0074] like Figure 2 , 7 -8, the circuit breaker of the utility model also includes a first locking piece 14 and a first locking piece reset spring 16 which are slidably arranged in the housing 1 along the direction d3. The first locking piece reset spring 16 acts on the first locking piece 14 to make it have a tendency to move to the outside of the housing 1 and make the first locking protrusion 14-1 of the first locking piece 14 protrude outside the housing 1. The first locking piece 14 moves toward the inside of the housing 1 when the first locking protrusion 14-1 is squeezed by an external force (that is, when the first locking protrusion 14-1 is squeezed by an external force, the first locking piece 14 is driven to move toward the inside of the housing 1 as a whole); when the circuit breaker is in the open state, the first locking piece 14 is driven by the pulled operating piece 2 to move toward the inside of the housing 1, that is, when the circuit breaker is in the open state, the operating piece 2 is pulled in the open position to drive the first locking piece 14 to move toward the inside of the housing 1.

[0075] When the circuit breaker of the present utility model is installed in a circuit breaker installation cabinet (such as a power distribution cabinet, a control cabinet or other electrical cabinets) during actual use, the first locking protrusion 14-1 moves towards the inside of the housing 1 under the extrusion of the structure of the circuit breaker installation cabinet, which will not affect the installation of the circuit breaker into the designated position of the circuit breaker installation cabinet. After the circuit breaker is installed in the designated position and in place, the first locking protrusion 14-1 will be opposite to the first locking hole provided at the designated position of the circuit breaker installation cabinet and move towards the outside of the housing 1 and insert into the first locking hole, so as to be in limit cooperation with the circuit breaker installation cabinet, ensuring that the circuit breaker will not be pulled out from the designated position of the circuit breaker installation cabinet in the closed state, which not only ensures the personal safety of the operator, but also ensures the reliability and stability of power use.

[0076] As Figure 7-8 shown, the circuit breaker of the present utility model further includes a second locking member 15 rotatably provided inside the housing 1. The second locking member 15 includes a second locking protrusion 15-0. When the operating member 2 moves from the opening position to the closing position, the second locking member 15 is directly or indirectly driven by the operating member 2 to rotate forward so that the second locking protrusion 15-0 moves towards the outside of the housing 1. When the operating member 2 moves from the closing position to the opening position, the second locking member 15 rotates reversely so that the second locking protrusion 15-0 moves towards the inside of the housing 1. When the operating member 2 is in the closing position, the operating member 2 directly or indirectly restricts the second locking member 15 from rotating reversely.

[0077] When the operating member 2 moves from the opening position to the closing position, the second locking member 15 is driven by the operating member 2 to rotate forward so that the second locking protrusion 15-0 moves towards the outside of the housing 1. The second locking protrusion 15-0 is used for limit cooperation with the structure of the circuit breaker installation cabinet (such as a power distribution cabinet, a control cabinet or other electrical cabinets), thereby preventing the circuit breaker of the present utility model from being installed in the circuit breaker installation cabinet in the closed state and ensuring the personal safety of the operator. After the circuit breaker of the present utility model is installed in the circuit breaker installation cabinet in the opening state and in place, the second locking protrusion 15-0 protruding outside the housing 1 is also used to be opposite to the second locking hole of the circuit breaker installation cabinet and extend into it. The second locking protrusion 15-0 is in limit cooperation with the structure of the circuit breaker installation cabinet. When the operating member 2 is in the closing position, the operating member 2 is directly or indirectly in limit cooperation with the second locking member 15 to prevent it from rotating reversely, thereby preventing the circuit breaker of the present utility model from being pulled out of the circuit breaker installation cabinet in the closed state, which not only ensures the personal safety of the operator, but also ensures the stability and reliability of power use. When the operating member 2 moves from the closing position to the opening position, the second locking member 15 rotates reversely so that the second locking protrusion 15-0 moves towards the inside of the housing 1, and the second locking protrusion 15 withdraws from the second locking hole, thereby releasing the limit cooperation with the circuit breaker installation cabinet, and then the second locking member 15 will not affect the removal of the circuit breaker of the present utility model from the circuit breaker installation cabinet.

[0078] Further, the second locking protrusion 15-0 is a square protrusion, so as to prevent the second locking protrusion 15-0 from being squeezed when the operating member 2 is in the closing position, causing damage or deformation of the second locking member 15, and preventing the situation where the circuit breaker of the present utility model is directly installed into the circuit breaker installation cabinet.

[0079] Further, when the operating member 2 moves from the closing position to the opening position, the second locking member 15 is driven directly or indirectly by the operating member 2 to rotate reversely, causing the second locking protrusion 15-0 to move towards the inside of the housing 1. Further, the second locking member 15 is driven by the operating member 2 being pulled when in the opening position to rotate reversely, and the first locking member 14 is driven by the reversely rotating second locking member 15 to move towards the inside of the housing 1 when the operating member 2 in the opening position is pulled; that is, when the operating member 2 is pulled in the opening position, the operating member 2 simultaneously drives the second locking member 15 to rotate reversely, and the second locking member 15 simultaneously drives the first locking member 14 to move towards the inside of the housing 1.

[0080] As another embodiment, the circuit breaker of the present utility model includes a second locking member return spring that acts on the second locking member 15 to give it a tendency to rotate reversely. When the operating member 2 moves from the closing position to the opening position, the operating member 2 no longer restricts the reverse rotation of the second locking member 15, and the second locking member return spring drives the second locking member 15 to rotate reversely.

[0081] The circuit breaker of the present utility model can be provided with both the first locking member 14 and the second locking member 15, or can be provided with only the first locking member 14 or the first locking member 15.

[0082] As Figure 3-8 shown, the circuit breaker of the present utility model further includes an indicating member 13 provided in the middle of the operating member 2 and having a first indicating position and a second indicating position. The operating member 2 includes an indicating hole 2-1 for cooperating with the indicating member 13; when the operating member 2 moves to the closing position, the indicating member 13 is driven by the indicating member driving structure to rotate to the first indicating position; when the operating member 2 moves to the opening position, the indicating member 13 is driven by the indicating member driving structure to rotate to the second indicating position; that is, the first indicating position and the second indicating position of the indicating member 13 correspond to the closing position and the opening position of the operating member 2 respectively, and correspond to the closing state and the opening state of the circuit breaker of the present utility model respectively. The indicating member 13 is provided in the middle of the operating member 2, which is beneficial to improving the structural compactness of the circuit breaker and reducing the overall installation space required for the circuit breaker.

[0083] Further, the indicating member 13 includes an indicating portion 13-0, an indicating member connecting portion 13-1, and an indicating member mounting portion 13-2 that are connected in sequence, as well as a closing actuating portion 13-30 and a tripping actuating portion 13-31 provided on the indicating member mounting portion 13-2; the indicating portion 13-0 of the indicating member 13 is used in cooperation with the indicating hole 2-1 of the operating member 2, and the indicating member 13 is rotatably mounted on the operating member 2 through the indicating member mounting portion 13-2, and the closing actuating portion 13-30 and the tripping actuating portion 13-31 are arranged in sequence along the rotation direction of the indicating member mounting portion 13-2; the indicating member driving structure is implemented by the housing 1 (for example, a driving protrusion provided on the housing 1, and the driving protrusion is inserted between the closing actuating portion 13-30 and the tripping actuating portion 13-31); when the operating member 2 moves to the closing position, the closing actuating portion 13-0 is pressed by the indicating member driving structure to rotate the indicating member 13 to the first indicating position; when the operating member 2 moves to the tripping position, the tripping actuating portion 13-1 is pressed by the low pressure of the indicating member driving structure to rotate the indicating member 13 to the second indicating position.

[0084] As another embodiment, the indicating member 13 does not have a closing actuating portion 13-30 and a tripping actuating portion 13-31, but only has an indicating member actuating portion provided on the indicating member mounting portion 13-2; correspondingly, the indicating member driving structure includes two indicating member driving protrusions, one being a closing driving protrusion and the other being a tripping driving protrusion, and the indicating member actuating portion is inserted between the two indicating member driving protrusions; when the operating member 2 moves to the closing position, the closing driving protrusion presses the indicating member actuating portion to rotate the indicating member 13 to the first indicating position; when the operating member 2 moves to the tripping position, the tripping driving protrusion presses the indicating member actuating portion to rotate the indicating member 13 to the second indicating position.

[0085] As Figure 1 shown, the housing 1 further includes an operating member mounting hole 1-6 for the operating member 2 to be inserted therein, a first jack 1-20 for cooperating with the first terminal 8-0, a second jack 1-21 for cooperating with the second terminal 8-1, a signal jack 1-3 for cooperating with the signal terminal 12, a third jack 1-50 for cooperating with the third terminal 5-0, and a fourth jack 1-51 for cooperating with the fourth terminal 5-1.

[0086] As Figure 1 shown, the housing 1 further includes a signal window 1-4, and the circuit breaker further includes an indicating element connected to the control system 11. The indicating element cooperates with the signal window 1-4 to indicate the state of the circuit breaker, such as the closing and tripping states, fault state, communication state, etc. of the circuit breaker; the signal window 1-4 and the operating member mounting hole 1-6 are provided on the same side wall of the housing 1. Further, the indicating element is a light-emitting diode.

[0087] As Figure 3-4As shown, the housing 1 is further provided with a first opening for the first locking projection 14-1 of the first locking member 14 to pass through and a second opening for the second locking projection 15-0 of the second locking member 15 to pass through. Further, the first opening and the second opening are the same opening.

[0088] As Figure 1 shown, the housing 1 further includes an installation guiding structure 1-1, which is used to cooperate with the guiding structure on the circuit breaker installation cabinet (such as a power distribution cabinet, a control cabinet or other electrical cabinets) when the circuit breaker of the present invention is installed in the circuit breaker installation cabinet, so that the circuit breaker of the present invention is installed in place in the correct posture. Further, the installation guiding structure 1-1 is a guiding rib structure.

[0089] As Figure 1-2 shown, it is a layout mode of the circuit breaker of the present invention.

[0090] The circuit breaker of the present invention includes a length direction d2, a width direction d2 and a height direction d3, that is, the length direction, width direction and height direction of the circuit breaker are the length direction d1, width direction d2 and height direction d3 respectively, and the length direction d1, width direction d2 and height direction d3 are perpendicular to each other. In the length direction d1, the operating member 2 is arranged at one end of the housing 1, and the sampling device 7 and the arc extinguishing system 6 are arranged at the other end of the housing 1; the electromagnetic system 3-0 and the contact system 4 are arranged in sequence between the operating member 2 and the arc extinguishing system 6 along the length direction d1; the sampling device 7 and the arc extinguishing system 6 are arranged side by side along the height direction d3, and at least part of the circuit board 11p of the control system 11 is arranged side by side with the electromagnetic system 3-0 along the height direction d3.

[0091] The circuit breaker of the present invention adopts the above layout, which is compact and reasonable in structure, conducive to reducing the overall specification size of the circuit breaker of the present invention, and conforms to the development trend of miniaturization of circuit breakers.

[0092] Further, the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are arranged on the same side of the arc extinguishing system 6 in the height direction d3; that is, in the height direction d3, the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are on the same side relative to the side where the arc extinguishing system 6 is located, and the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are arranged on the same side inside the housing 1. The above layout is conducive to the wiring of the control system 11 and the electromagnetic system 3-0 and the coupling of the sampling device 7 and the contact system 4, and further simplifies the internal layout of the circuit breaker of the present invention.

[0093] Furthermore, the circuit board 11p is arranged side by side with the contact system 4 and / or the arc extinguishing system 6 in the width direction d2; in the circuit breaker of the present invention, the circuit board 11p is arranged side by side with the contact system 4 and the arc extinguishing system 6 in the width direction d2. It should be noted that whether the circuit board 11p is arranged side by side with the contact system 4 and the arc extinguishing system 6 in the width direction d2 can be adjusted according to the specific dimensions of the circuit board 11p.

[0094] Specifically, as Figure 1-2 shown in the direction, Figure 1 the up-and-down direction is the length direction d1, Figure 1 the inside-outside direction is the width direction d2, Figure 1 and the left-right direction is the height direction d3; the operating member 2 is arranged at the upper end of the housing 1, the sampling device 7 and the arc extinguishing system 6 are arranged at the lower end of the housing 1, the sampling device 7 and the arc extinguishing system 6 are arranged side by side in the left-right direction, and at least part of the circuit board 11p of the control system 11 and the electromagnetic system 3-0 are arranged side by side in the left-right direction. The operating member 2, the electromagnetic system 3-0, and the sampling device 7 are all arranged on the right side of the arc extinguishing system 6; that is, in the left-right direction, the electromagnetic system 3-0 is located on the right side of the circuit board 11p of the control system 11, the sampling device 7 is located on the right side of the arc extinguishing system 6, and the sampling member 2, the electromagnetic system 3-0, and the sampling device 7 are all arranged on the right side inside the housing 1.

[0095] As another embodiment, the operating member 2, the electromagnetic system 3-0, and the sampling device 7 are all arranged on the left side of the arc extinguishing system 6, that is, the components inside the circuit breaker are arranged in a mirror image manner with respect to this embodiment.

[0096] Furthermore, the first terminal 8-0 and the second terminal 5-0 are respectively arranged at both ends of the housing 1 in the length direction d1, the third terminal 5-0 is arranged side by side with the operating member 2 in the direction d3, and the electromagnetic system 3-0, the arc extinguishing system 6, the sampling device 7, and the control system 11 are located between the operating member 2 and the first terminal 8-0 in the length direction d1; that is, the operating member 2 and the first terminal 8-0 are located at the two ends of the housing 1 that are farthest apart in the length direction d1, and the operating member 2, the electromagnetic system 3-0, the sampling device 7, and the first terminal 8-0 are located on the same side of the third terminal 5-0 and the arc extinguishing system 6 in the height direction d3.

[0097] Specifically, as Figure 2 shown in the direction, the operating member 2 and the third terminal 5-0 are both arranged at the uppermost end of the housing 1, the third terminal 5-0 is arranged on the left side of the operating member 2, the first terminal 8-0 is arranged at the lowermost end of the housing 1, the electromagnetic system 3-0 and the sampling device 7 are arranged from top to bottom between the operating member 2 and the first terminal 8-0, and the third terminal 5-0, the control system 11, and the arc extinguishing system 6 are arranged in sequence from top to bottom.

[0098] As other embodiments, in the length direction d1, the first terminal 8-0 and the second terminal 5-1 are arranged at one end of the circuit breaker, and the operating member 2 is arranged at the other end of the circuit breaker, that is, the first terminal 8-0 and the second terminal 5-1 are arranged on the same end of the circuit breaker. Further, the first terminal 8-0 and the second terminal 5-1 are arranged side by side and spaced apart along the height direction d3.

[0099] Further, the third jack 1-50, the fourth jack 1-51, the signal window 1-4, and the operating member mounting hole 1-6 are all arranged on the same side wall of the housing 1. The third jack 1-50, the fourth jack 1-51, and the signal window 1-4 are arranged in a triangular shape; in the direction d3, the fourth jack 1-51 is the farthest from the operating member jack 1-6, and the signal window 1-4 is the closest to the operating member jack 1-6; in the width direction d2, the fourth jack 1-51 and the signal window 1-4 are located on the same side of the third jack 1-50.

[0100] Further, the connecting conductor 20 of the main circuit structure and the circuit board 11p of the control system 11 are arranged side by side along the width direction d2. The first sampling terminal 11-0 and the connecting conductor 20 are located on the same side of the circuit board 11p. The first sampling terminal 11-0, the connecting conductor 20, and the electromagnetic system 3-0 are arranged side by side along the height direction d3. The above layout design is beneficial to reducing the height dimension of the circuit breaker of the present utility model. Moreover, the thickness of the circuit board 11p itself is limited, and arranging the connecting conductor 20 and the circuit board 11p side by side also makes full use of the space of the housing 1 in the width direction d2. Arranging the first sampling terminal 11-0, the connecting conductor 20, and the electromagnetic system 3-0 side by side along the height direction d3 also makes full use of the space of the housing 1 in the height direction d3.

[0101] Further, the second terminal 8-1 of the secondary circuit structure and the first terminal 8-0 of the main circuit structure are arranged side by side along the height direction d3. The second terminal 8-1 and the first terminal 8-0 are arranged at the same end of the housing 1 in the direction d1. Further, the signal terminal 12 of the main circuit structure is located between the first terminal 8-0 and the second terminal 8-1 in the direction d3. The signal terminal 12, the first terminal 8-0, and the second terminal 8-1 are arranged at the same end of the housing 1 in the length direction d1. Further, the first jack 1-20, the signal jack 1-3, and the second jack 1-21 are arranged at intervals in sequence along the height direction d3 at one end of the housing 1.

[0102] Further, the electromagnetic system 3-0, the contact system 4, the arc extinguishing system 6, and the sampling device 7 are arranged side by side along the height direction d3 with the through conductor of the secondary circuit structure; that is, the electromagnetic system 3-0, the contact system 4, the arc extinguishing system 6, and the sampling device 7 are arranged on the same side of the through conductor in the height direction d3.

[0103] Furthermore, at least a part of the through-conductor is arranged side by side with the circuit board 11p of the control system 11 in the width direction d2, and this part is also inserted and cooperated with the second sampling terminal 11-1. The second sampling terminal 11-1 is arranged side by side with the electromagnetic system 3-0 in the height direction d3.

[0104] Furthermore, the rotation plane of the indicating member 13 is parallel to the length direction d1 and perpendicular to the width direction d2 and the height direction d3.

[0105] Furthermore, the first locking member 14 and the third terminal 5-0 are respectively arranged at both ends of the housing 1 in the height direction d3.

[0106] Furthermore, the second locking member 15 and the third terminal 5-0 are respectively arranged at both ends of the housing 1 in the height direction d3.

[0107] Furthermore, when the circuit breaker of the present utility model is provided with both the first locking member 14 and the second locking member 15, the first locking member 14 and the second locking member 15 are arranged side by side in the width direction d2.

[0108] Furthermore, the first opening and the second opening are arranged on the right side wall of the housing 1, and the installation guiding structure 1-1 is arranged on the left side wall of the housing 1.

[0109] Such as Figure 1As shown, the length direction, width direction, and height direction of the housing 1 are the same as the length direction d1, width direction d2, and height direction d3 of the circuit breaker; the length a of the housing 1 is 100 - 150 mm, the width b is 10 - 60 mm, and the height c is 38 - 45 mm. The dimension of the height c of the housing 1 is the modular dimension of the circuit breaker of the present utility model. Further, the width b is 10, 15, 20, 25, 30, 60 mm. Further, for the circuit breaker of the present utility model, when the width b of its housing 1 is 10 mm, the rated current ≤ 32 A; for the circuit breaker of the present utility model, when the width b of its housing 1 is 15, 20, or 25 mm, the rated current ≤ 63 or 80 A; for the circuit breaker of the present utility model, when the width b of its housing 1 is 30 mm, the rated current ≤ 125 A; for the circuit breaker of the present utility model, when the width b of its housing 1 is 60 mm, the rated current ≤ 250 A. For the circuit breaker of the present utility model, the width b of its housing 1 can be adjusted according to actual needs, and accordingly, the number of moving contacts 4 - 11 and / or static contacts 4 - 2 can be increased along the width direction of the housing 1, and / or the dimensions of the moving contacts 4 - 11 and / or static contacts 4 - 2 along the width direction of the housing 1 can be increased to increase the current-carrying cross-section, thereby improving the current-carrying capacity of the circuit breaker of the present utility model. Further, the length a of the housing 1 is the distance between the outer sides of the two side walls perpendicular to the length direction d1 of the housing 1, the width of the housing 1 is the distance between the outer sides of the two side walls perpendicular to the width direction d2 of the housing 1, and the height of the housing 1 is the distance between the outer sides of the two side walls perpendicular to the height direction d3 of the housing 1.

[0110] As Figure 2-6 shown, the circuit breaker of the present utility model further includes an operating system, and the operating system includes an operating member 2, an operating mechanism 3, a moving contact mechanism 4 - 1, a sampling device 7, and a control system 11. Further, the operating system further includes an indicating member 13.

[0111] As Figure 2-6 shown, it is an embodiment of the operating system.

[0112] In the operating system of this embodiment, the two ends of the top rod 3-05 of the electromagnetic system 3-0 are respectively connected to the operating member 2 and the moving contact mechanism 4-1 by transmission. The operating member 2 switches between the closing position and the opening position, and the moving contact mechanism 4-1 is driven by the top rod 3-05 to switch between the closing position and the opening position. That is, when the operating member 2 moves from the opening position to the closing position, the top rod 3-05 is driven by the operating member 2 and moves from the second position to the first position at the same time, and the moving contact mechanism 4-1 is driven by the top rod 3-05 and moves from the opening position to the closing position at the same time and closes with the static contact 4-2; when the operating member 2 moves from the closing position to the opening position, the top rod 3-05 is driven by the operating member 2 and moves from the first position to the second position at the same time, and the moving contact mechanism 4-1 is driven by the top rod 3-05 and moves from the closing position to the opening position at the same time and disconnects with the static contact 4-2.

[0113] Furthermore, the operating mechanism 3 further includes a front connecting rod 3-1, which is connected to the operating member 2 and is arranged to move synchronously. Further, the front connecting rod 3-1 includes a front connecting rod driving part 3-11 and a front connecting rod connecting part 3-12, the front connecting rod connecting part 3-12 is used to be connected to the operating member 2, and the front connecting rod driving part 3-11 is used to be connected to the top rod 3-05 by transmission. Further, when the operating member 2 is in the opening position, a free stroke is provided between the front connecting rod 3-1 and the top rod 3-05, allowing the front connecting rod 3-1 to move to the outside of the housing 1 relative to the top rod 3-05 under the drive of the operating member 2.

[0114] Specifically, the front link driving part 3-11 includes a front link jack 3-111 and a front link cavity 3-110; the ejector rod 3-05 includes a front rod body 3-0500 and a front connection cap 3-0501. The outer diameter of the front connection cap 3-0501 is greater than that of the front rod body 3-0500. The front rod body 3-0500 is slidably inserted into the front link jack 3-111, and the outer diameter of the front rod body 3-0500 is adapted to the inner diameter of the front link jack 3-111. The front connection cap 3-0501 is arranged in the front link cavity 3-110, and the outer diameter of the front connection cap 3-0501 is greater than the inner diameter of the front link jack 3-111. The front link driving part 3-11 includes a front link closing wall and a front link opening wall that are opposite to and respectively located on both sides of the front link cavity 3-110. The front link jack 3-111 is provided on the front link opening wall. When the operating member 2 moves from the opening position to the closing position, the front link closing wall presses against the front connection cap 3-0501 to drive the front link 3-05 to move from the second position to the first position. When the operating member 2 moves from the closing position to the opening position, the front link opening wall presses against the front connection cap 3-0501 to drive the front link 3-05 to move from the first position to the second position. When the operating member 2 is in the opening position, a free stroke is formed between the front link opening wall and the front connection cap 3-0501, allowing the operating member 2 to be pulled relative to the ejector rod 3-05 and move towards the outside of the housing 1. Thus, the operating member 2 drives the first locking member 14 to move towards the inside of the housing 1 through the unlocking mechanism 19 or the second locking member 15. Further, the front link driving part 3-11 further includes a first driving part opening and a second driving part opening respectively provided on one side thereof. The first driving part opening communicates with the front link cavity 3-110, and the second driving part opening communicates with the front link jack 3-111 and is located on the radial side of the front link jack 3-111. The front link cap 3-0501 enters the front link cavity 3-110 through the first driving part opening, and the front rod body 3-0500 enters the front link jack 3-111 through the second driving part opening.

[0115] Specifically, the front link connecting part 3-12 includes a pair of front link connecting walls, and the two front link connecting walls are respectively arranged on both sides of the operating member 2 and connected thereto. Further, the two front link connecting walls are connected to the operating member 2 through a front connecting shaft 3-31 and are respectively located on both sides of the two side walls of the installation cavity 2-2 of the operating member 2. The front connecting shaft 3-31 passes through the indicating member mounting part 13-2 of the indicating member 13 and is rotationally matched therewith, that is, the indicating member 13 is rotatably arranged on the operating member 2 through the front connecting shaft 3-31. Operating member shaft holes 2-4 for inserting the front connecting shaft 3-31 are provided on both side walls of the installation cavity 2-2. The front link connecting wall is provided with a front link connecting hole 3-1200 for inserting the front connecting shaft 3-31.

[0116] As Figure 1-2As shown, it is an embodiment of the circuit breaker of the present utility model, which includes the operating system.

[0117] When the circuit breaker of this embodiment is closed, the operating member 2 is operated by an external force (for example, the end of the operating member 2 protruding outside the housing 1 is pressed), and the operating member 2 is driven to move from the open position to the closed position. At the same time, the operating member 2 drives the ejector rod 3-05 to move from the second position to the first position through the front link 3-1. The ejector rod 3-05 simultaneously drives the moving contact mechanism 4-1 to move from the open position to the closed position to close with the static contact 4-2.

[0118] Furthermore, the operating member 2 and the front link 3-1 are of a detachable split structure or an integral structure.

[0119] When the circuit breaker of this embodiment is opened, the operating member 2 is operated by an external force (for example, the end of the operating member 2 protruding outside the housing 1 is pulled), and the operating member 2 is driven to move from the closed position to the open position. At the same time, the operating member 2 drives the ejector rod 3-05 to move from the first position to the second position through the front link 3-1. The ejector rod 3-05 simultaneously drives the moving contact mechanism 4-1 to move from the closed position to the open position to disconnect from the static contact 4-2.

[0120] For the circuit breaker of this embodiment, when the operating member 2 performs the closing operation and the opening operation, the electromagnetic coil of the electromagnetic system 3-0 is not involved.

[0121] The circuit breaker of this embodiment includes a first locking mechanism and a second locking mechanism. The first locking mechanism includes a first locking member 14 and a first locking member return spring 16, and the second locking mechanism includes a second locking member 15. Further, when the circuit breaker of this embodiment is closed, the second locking member 15 is driven by the front link 3-1 (the front link 3-1 is arranged to move synchronously with the operating member 2, and the second locking member 15 is driven by the front link 3-1, that is, indirectly driven by the operating member 2) to rotate forward so that the second locking protrusion 15-0 of the second locking member 15 protrudes outside the housing 1; when the circuit breaker of this embodiment is opened, the second locking member 15 is driven by the front link 3-1 to rotate reversely so that the second locking protrusion 15-0 moves towards the inside of the housing 1; when the circuit breaker of this embodiment is in the closed state, the front link 3-1 and the second locking member 15 are in limit cooperation to limit the reverse rotation of the second locking member 15. Further, when the circuit breaker of this embodiment is closed, the front arm 15-3 of the second locking member 15 is driven by the front link 3-1 to make the second locking member 15 rotate forward. Further, when the circuit breaker of this embodiment is in the open state, the second locking member 15 is driven to rotate reversely by the operating member 2 that is pulled at the open position, and the first locking member 14 is driven by the reversely rotating second locking member 15 to move towards the inside of the housing 1; that is, when the circuit breaker of this embodiment is in the open state and the operating member 2 is pulled at the open position, the operating member 2 simultaneously drives the second locking member 15 to rotate reversely, and the second locking member 15 simultaneously drives the first locking member 14 to move towards the inside of the housing 1; the operating member 2 can simultaneously unlock the first locking member 14 and the second locking member 15, which is beneficial to improving the operation efficiency and simplifying the structure of the circuit breaker.

[0122] Specifically, the second locking member 15 further includes a second locking member mounting portion 15-2 and a second locking member front arm 15-3. The second locking member 15 is rotatably arranged on the housing 1 through the second locking member mounting portion 15-2. One end of the second locking member front arm 15-3 is connected to the second locking member mounting portion 15-2, and the other end is provided with a second locking member protrusion 15-0. When the circuit breaker of this embodiment is closed, the second locking member front arm 15-3 is driven by the front link 3-1 to rotate the second locking member 15 forward. Further, the second locking member 15 further includes a second locking member mating portion 15-4 provided on the second locking member front arm 15-3. The second locking member mating portion 15-4 and the second locking member protrusion 15-0 are respectively arranged on both sides of the second locking member front arm 15-3. When the circuit breaker of this embodiment is closed, the second locking member mating portion 15-4 is pressed by the front link 3-1 to rotate the second locking member 15 forward. Further, the second locking member mating portion 15-4 includes a mating portion transition surface 15-41 and a mating portion limiting surface 15-40 that are bent and connected. The front link 3-1 includes a front link first transition surface 3-121, a front link limiting surface 3-122, and a front link second transition surface 3-123 that are connected in sequence. The front link first transition surface 3-121 and the front link second transition surface 3-123 are respectively bent and connected to the front link limiting surface 3-122 and bent toward the same side of the front link limiting surface 3-122 (the side away from the second locking member 15). The mating portion limiting surface 15-40 abuts against the front link limiting surface 3-122 to prevent the second locking member 15 from rotating reversely. The mating portion limiting surface 15-40 and the front link limiting surface 3-122 are both parallel to the moving direction of the front link 3-1. When the circuit breaker of this embodiment is in the open state and the operating member 2 is pulled, the front link second transition surface 3-123 and the front link limiting surface 3-122 sequentially contact the free end of the second locking member front arm 15-3 to drive the second locking member 15-3 to rotate reversely, and the front link limiting surface 3-122 is in limit cooperation with the free end of the second locking member front arm 15-3 to prevent the second locking member 15 from rotating forward. When the circuit breaker of this embodiment is closed, the front link first transition surface 3-121 and the front link limiting surface 3-122 respectively contact the mating portion transition surface 15-41 and the mating portion limiting surface 15-40 in sequence to drive the second locking member 15 to rotate forward. Further, the second locking member 15 further includes a second locking member rear arm 15-1. One end of the second locking member rear arm 15-1 is connected to the second locking member mounting portion 15-2, and the other end is in transmission cooperation with the front link 3-1. Further, the second locking member front arm 15-3 and the second locking member rear arm 15-1 are arranged in a V shape, and the included angle between the two is an obtuse angle, and the opening of the obtuse angle faces the operating member 2.Further, the first locking member 14 includes a first locking member actuating part 14-2; the first locking member actuating part 14-2 is pressed by the rear arm 15-1 of the second locking member 15 that rotates reversely, so as to drive the first locking member 14 to move towards the inside of the housing 1; that is to say, when the circuit breaker of this embodiment is in the open state and the operating member 2 is in the open position, when the operating member 2 is pulled by an external force and moves towards the outside of the housing 1, the operating member 2 simultaneously drives the second locking member 15 to rotate reversely, and the second locking member 15 simultaneously presses the first locking member actuating part 14-2 through the rear arm 15-1 of the second locking member to drive the first locking member 14 to move towards the inside of the housing 1. Further, one end of the first locking member 14 is a first locking member protrusion 14-1, and a first locking member actuating part 14-2 is provided on one side of the other end. The first locking member actuating part 14-2 is a convex rib, and the protruding direction of the convex rib is perpendicular to the sliding direction of the first locking member 14 and the same as the rotation axis direction of the second locking member 15.

[0123] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which it is usually placed during use. It is only for the convenience of description, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0124] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. An operating system, comprising an operating member (2) arranged to move back and forth and having a closing position and an opening position, an electromagnetic system (3-0) and a moving contact mechanism (4-1) having a closing position and an opening position, wherein the electromagnetic system (3-0) comprises a magnetic generating component (3-0m) and a top rod (3-05) movably inserted in the middle of the magnetic generating component (3-0m), and the two ends of the top rod (3-05) are respectively connected to the operating member (2) and the moving contact mechanism (4-1) by transmission, and the operating member (2) switches between the closing position and the opening position, and the moving contact mechanism (4-1) is driven by the top rod (3-05) to switch between the closing position and the opening position; It is characterized in that: The electromagnetic system (3-0) operates when an overload and / or short-circuit current flows through the moving contact mechanism (4-1) to drive the top rod (3-05) to drive the moving contact mechanism (4-1) to move from a closed position to an open position.

2. The operating system according to claim 1, wherein: The electromagnetic system (3-0) is a magnetic holding system.

3. The operating system according to claim 2, wherein: The magnetic generating component (3-0m) comprises a coil component (3-01), a magnetic yoke (3-03) arranged around the coil component (3-01) and a permanent magnet (3-04), wherein the permanent magnet (3-04) is sleeved on the outer side of the middle part of the coil component (3-01) and is located between the two electromagnetic coils of the coil component (3-01); the electromagnetic system (3-0) further comprises a moving iron core (3-02) slidably arranged in the middle part of the coil component (3-01), the moving iron core (3-02) is connected to a push rod (3-05) and is arranged to move synchronously, and the two ends of the push rod (3-05) respectively protrude on both sides of the axial direction of the coil component (3-01); the electromagnetic system 3-0 further comprises a first static iron core and a second static iron core arranged relatively to each other along the axial direction of the coil component 3-01, when one end of the moving iron core 3-02 is attracted to the first static iron core, the push rod 3-05 is in the first position, and when the moving iron core 3-02 is attracted to the second static iron core, the push rod 3-05 is in the second position.

4. The operating system according to claim 3, characterized in that: The push rod (3-05) comprises a front push rod (3-050) and a rear push rod (3-051); one end of the front push rod (3-050) is inserted into the moving iron core (3-02) and the other end is transmission-connected to the operating member (2); one end of the rear push rod (3-051) is inserted into the moving iron core (3-02) and the other end is transmission-connected to the moving contact mechanism (4-1).

5. The operating system according to claim 1, characterized in that: The operating system further comprises a control system (11) and a sampling device (7); the sampling device (7) is coupled to the moving contact mechanism (4-1) for collecting current flowing through the moving contact mechanism (4-1); the control system (11) is respectively connected to the electromagnetic system (3-0) and the sampling device (7); when a short circuit or overload current flows through the moving contact mechanism (4-1), the electromagnetic system (3-0) is controlled by the control system (11) to operate and drive the moving contact mechanism (4-1) from a closed position to an open position through a push rod (3-05).

6. The operating system according to claim 5, characterized in that: The sampling device (7) is a manganese copper shunt connected in series with the moving contact mechanism (4-1); or, the sampling device (7) is a mutual inductor coupled with the moving contact mechanism (4-1).

7. The operating system according to claim 1, wherein: The moving contact mechanism (4-1) is rotatably arranged; the operating system further includes a rear connecting rod (3-2), and one end of the rear connecting rod (3-2) is fixedly connected to the ejector rod (3-05) and is hinged to the moving contact mechanism (4-1).

8. The operating system according to claim 7, wherein: The rear connecting rod (3-2) is provided with a rear connecting rod cavity (3-20) and a rear connecting rod jack (3-21), the rear connecting rod jack (3-21) is arranged on the side wall of the rear connecting rod cavity (3-20), the ejector rod (3-05) includes a rear rod body (3-0510) and a rear connecting cap (3-0511), the outer diameter of the rear connecting cap (3-0511) is larger than the outer diameter of the rear rod body (3-0510), the inner diameter of the rear connecting rod jack (3-21) is adapted to the outer diameter of the rear rod body (3-0510) and is smaller than the outer diameter of the rear connecting cap (3-0511), the rear rod body (3-0510) is inserted into the rear connecting rod jack (3-21) and the rear connecting cap (3-0511) is placed in the rear connecting rod cavity (3-20).

9. The operating system according to claim 7, wherein: The rear connecting rod (3-2) is hinged to the contact support (4-10) through a rear connecting shaft (3-32); among the rear connecting rod (3-2) and the contact support (4-10), the rear connecting shaft (3-32) is arranged on one to move synchronously therewith, and the other is provided with a waist-shaped hole for cooperating with the rear connecting shaft (3-32).

10. A circuit breaker, characterized in that: The circuit breaker includes the operating system according to any one of claims 1-9; the operating system further includes a front connecting rod (3-1) connected to and moving synchronously with the operating member (2), and one end of the front connecting rod (3-1) is also drivingly connected to the ejector rod (3-05); the circuit breaker further includes a housing (1) and a second locking member (15), the operating member (2) is slidably arranged on the housing (1), and the operating system is arranged inside the housing (1); the second locking member (15) includes a second locking projection (15-0); when the circuit breaker is closed, the second locking member (15) is driven by the front connecting rod (3-1) to rotate forward so that the second locking projection (15-0) protrudes outside the housing (1); when the circuit breaker is opened, the second locking member (15) rotates reversely to move the second locking projection (15-0) towards the inside of the housing (1).

11. The circuit breaker according to claim 10, wherein: The second locking member (15) further includes a second locking member mounting portion (15-2) and a second locking member front arm (15-3), the second locking member (15) is rotatably arranged on the housing (1) through the second locking member mounting portion (15-2), one end of the second locking member front arm (15-3) is connected to the second locking member mounting portion (15-2) and the other end is provided with a second locking projection (15-0); when the circuit breaker is closed, the second locking member front arm (15-3) is driven by the front connecting rod (3-1) to make the second locking member (15) rotate forward; when the circuit breaker is in the closed state, the front connecting rod (3-1) restricts the second locking member (15) from rotating reversely.

12. The circuit breaker according to claim 10, characterized in that: When the circuit breaker is opened, the second locking member (15) is driven by the front connecting rod (3-1) to rotate reversely so that the second locking projection (15-0) moves towards the inside of the housing (1).

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