CN217983243U - Plug-in circuit breaker - Google Patents

Abstract

The embodiment of the application provides a plug-in circuit breaker, and belongs to the technical field of electrical equipment. The plug-in circuit breaker comprises an electronic tripping mechanism, a magnetic tripping mechanism and an operating mechanism fixed with a moving contact. The action end of the electronic tripping mechanism faces to the first part of the lock catch, the action end of the magnetic tripping mechanism faces to the second part of the lock catch, and the first part and the second part are respectively positioned at two sides of the moving contact. Like this, provide duplicate protection for the circuit breaker through electron tripping device and magnetism tripping device, when being convenient for accurate, timely control circuit breaker separating brake, can guarantee that electron tripping device and magnetism tripping device all have great installation space, and all can support very conveniently and push away the hasp for electron tripping device and magnetism tripping device's overall arrangement is more nimble, still is convenient for rationally arrange other structures of circuit breaker.

Description

Plug-in circuit breaker

Technical Field

The embodiment of the application relates to the technical field of electrical equipment, in particular to a plug-in circuit breaker.

Background

With the development of electrical automation, a plug-in circuit breaker has become an electrical appliance widely used in a low-voltage terminal power distribution system. It is generally capable of ensuring connection and disconnection at the rated currents, voltages and loads required by the various users. However, in the using process of the plug-in circuit breaker, the circuit where the plug-in circuit breaker is located may have overload or short circuit faults, and at this time, the plug-in circuit breaker needs to accurately and quickly respond to the faults, for example, the moving contact and the fixed contact are controlled to be disconnected in time, so that the plug-in circuit breaker is opened, and the protected circuit is disconnected.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the embodiments of the present application provide a plug-in circuit breaker, which can accurately and quickly respond to faults such as overload or short circuit of a main circuit, and ensure the safety of use of a load.

In one aspect of an embodiment of the present application, a plug-in circuit breaker is provided, including an electronic trip mechanism, a magnetic trip mechanism, and an operating mechanism. The moving contact is fixed on the lock catch of the operating mechanism. The action end of the electronic tripping mechanism faces to the first part of the lock catch, the action end of the magnetic tripping mechanism faces to the second part of the lock catch, and the first part and the second part are respectively positioned at two sides of the moving contact.

Through the scheme, on the one hand, the electronic tripping mechanism and the magnetic tripping mechanism can provide dual protection for the circuit breaker, so that the circuit breaker can be controlled to be opened accurately and timely, and timely and accurate response can be made to fault current. On the other hand, the action ends of the electronic tripping mechanism and the magnetic tripping mechanism face different parts of the lock catch, and the different parts are different parts on two sides of the moving contact, so that the electronic tripping mechanism and the magnetic tripping mechanism are close to the lock catch, and when a main loop of the circuit breaker breaks down, the lock catch can be conveniently pushed, and the circuit breaker is opened. And such position overall arrangement for electron tripping device and magnetism tripping device all have great installation space, and both overall arrangement can be more nimble, and can also effectively utilize the space of operating device both sides, be convenient for rationally arrange other structures of circuit breaker.

In some embodiments, the electronic trip mechanism and the operating mechanism are disposed substantially side-by-side in a length direction of the circuit breaker. The magnetic release mechanism and the operating mechanism are arranged substantially side by side in the width direction of the circuit breaker.

In some embodiments, the electronic trip mechanism and the operating mechanism are disposed generally side-by-side in a width direction of the circuit breaker. The magnetic release mechanism and the operating mechanism are arranged substantially side by side in the longitudinal direction of the circuit breaker.

Through above-mentioned two schemes for electron tripping device and magnetism tripping device set up in operating device's both sides along the not equidirectional setting of circuit breaker, so, can effectively utilize the space of operating device both sides, are convenient for reduce the volume of circuit breaker.

In some embodiments, the plug-in circuit breaker further includes a handle transmission mechanism extending along a length of the circuit breaker toward the operating mechanism, and the handle transmission mechanism and the electronic trip mechanism are located on both sides of the operating mechanism along the length. The handle transmission mechanism is in driving connection with the operating mechanism and can drive the operating mechanism to act so as to open or close the circuit breaker.

Through the scheme, the handle transmission mechanism can manually control the switching-on or switching-off of the circuit breaker when the handle transmission mechanism is acted by external force. In addition, the layout facilitates reasonable utilization of the space of the breaker in the length direction.

In some embodiments, the plug-in circuit breaker further comprises an electrically operated mechanism. The electric operating mechanism and the handle transmission mechanism are positioned on the same side of the operating mechanism along the length direction of the circuit breaker; along the width direction of the circuit breaker, the handle transmission mechanism and the electric operating mechanism are respectively positioned in the spaces on two sides in the shell of the circuit breaker. The output end of the electric operating mechanism is connected to the operating mechanism in a driving mode, and the electric operating mechanism can drive the operating mechanism to act to enable the breaker to be opened or closed.

Through the scheme, the breaker can be manually controlled to be switched on or switched off through the handle transmission mechanism, and can be remotely controlled to be switched on or switched off through the electric operating mechanism, so that the use flexibility and the operation convenience of the breaker are improved. In addition, the electric operating mechanism and the manual operating mechanism are positioned at the same side of the operating mechanism, so that the internal space of the circuit breaker can be reasonably planned.

In some embodiments, the handle transmission mechanism includes a transmission member, an output end of the electric operating mechanism is connected to the transmission member in a driving manner, and the electric operating mechanism drives the operating mechanism to operate through the transmission member, so as to close the circuit breaker.

Through the scheme, the transmission part not only can play a role of connecting the handle drive to the operating mechanism, but also can be convenient for reasonably and flexibly arranging the transmission structure of the handle transmission mechanism in a limited shell space. In addition, in the case of a handle which is drivingly connected to the operating mechanism via a transmission, the output of the electric operating mechanism is drivingly connected to the transmission, so that the electric operating mechanism can be drivingly connected to the operating mechanism via the same transmission. That is, the handle actuator and the electric operating mechanism may share a common drive member. Therefore, the arrangement of parts in the shell can be reduced, and the size of the circuit breaker is convenient to reduce.

In some embodiments, the electrically operated mechanism comprises a multi-stage gear having a driving relationship, an output gear of the multi-stage gear being provided with a first sector gear, and the transmission member being provided with a gear intermittently meshing with the first sector gear.

Through above-mentioned scheme, if gear on first sector gear and the driving medium is in the engaged state, then can control circuit breaker divide-shut brake through electric manipulation mechanism, if these two gears break away from the meshing, then can control circuit breaker divide-shut brake through handle drive mechanism, consequently can realize that electric manipulation mechanism and handle drive mechanism do not disturb independent control circuit breaker divide-shut brake mutually.

In some embodiments, the electrically operated mechanism has an avoidance region in a thickness direction of the circuit breaker, and the handle transmission mechanism is at least partially located in the avoidance region.

Through above-mentioned scheme, handle drive mechanism can be located the electric operating mechanism and dodge the region in the thickness direction of circuit breaker at least partially, and need not additionally occupy the other spaces of casing thickness direction, is convenient for save the space of the thickness direction of circuit breaker.

In some embodiments, the plug-in circuit breaker further includes an arc extinguishing mechanism, the arc extinguishing mechanism is located on a side of the moving contact far away from the magnetic trip mechanism along a length direction of the circuit breaker, and the arc extinguishing mechanism is arranged side by side with the electronic trip mechanism along a width direction of the circuit breaker. One end of the coil of the magnetic trip mechanism, which is close to the arc extinguishing mechanism, extends to a fixed contact of the circuit breaker and is connected with a static arc striking plate of the arc extinguishing mechanism.

Through the scheme, the arc extinguishing mechanism can be arranged close to the moving contact and the fixed contact, so that electric arcs generated when the moving contact and the fixed contact are separated can be transferred and extinguished in time, and the space in the circuit breaker can be reasonably utilized. In addition, the coil of the magnetic separation structure is connected with the static arc striking plate through the static contact, so that the electric arc near the static contact can be conveniently and quickly led into the arc extinguish chamber.

In some embodiments, the plug-in circuit breaker further comprises a power-taking feedback mechanism located between the arc extinguishing mechanism and the power terminal of the circuit breaker along the length direction. The power-taking feedback mechanism is connected to the operating mechanism and the power supply terminal, and is used for acquiring electric energy of a main loop of the circuit breaker and feeding back the on-off condition of the main loop.

Through above-mentioned scheme, get electric feedback mechanism and be connected to the power supply terminal, can follow the power supply terminal and acquire the electric energy with normal work. Get electric feedback mechanism and still be connected to operating device, can insert the major loop to according to the collection condition to the major loop signal of telecommunication, the break-make circumstances of feedback major loop is convenient for in time feed back the break-make circumstances of circuit breaker. In addition, get electric feedback mechanism and lie in between the power supply terminal of arc extinguishing mechanism and circuit breaker along length direction, when being convenient for get electric terminal and power supply terminal and be connected, can reduce the possibility of getting electric feedback mechanism and other mechanism mutual interference, still can dodge bigger installation space for other great mechanisms of relevance.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and the embodiments of the present application can be implemented according to the content of the description in order to make the technical means of the embodiments of the present application more clearly understood, and the detailed description of the present application is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a closing state of an insertion type circuit breaker according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an opening state of a plug-in circuit breaker according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of an electronic trip mechanism according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a handle transmission mechanism and an operating mechanism provided in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of an electrical operating mechanism and a transmission member that are matched with each other according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of an electrical operating mechanism and an operating mechanism that are matched with each other according to an embodiment of the present application.

Description of reference numerals:

1. an electronic trip mechanism; 11. an electronic push rod; 111. a sliding groove; 112. a first abutment wall; 113. a second abutment wall; 12. a rotating rod; 121. a first rotating lever; 1211. a first abutting portion; 122. a second rotating lever; 2. a magnetic release mechanism; 3. an operating mechanism; 31. locking; 32. jumping and buckling; 4. a moving contact; 5. static contact; 6. a handle transmission mechanism; 61. a handle; 62. a transmission structure; 621. a transmission member; 622. a first connecting rod; 623. a second connecting rod; 7. an electric operating mechanism; 71. a motor; 72. a gear set; 721. a first drive gear; 722. a first driven gear; 723. a second driven gear; 724. a third driving gear; 725. a third driven gear; 73. a first sector gear; 8. an arc extinguishing mechanism; 81. a static arc striking plate; 9. the power supply device comprises a power supply feedback mechanism, 10 and a power supply terminal; A. a housing; a1, upper side wall; a2, lower side wall; x, the length direction of the circuit breaker; y, the width direction of the breaker; z, thickness direction of the breaker.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the figures are intended to cover non-exclusive inclusions.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: there are three cases of A, both A and B, and B. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the plug-in type circuit breaker of the present application. For example, in the description of the present application, the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, which is for convenience of description and simplicity of description only, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present application.

Further, expressions of directions of indication such as the X direction, the Y direction, and the Z direction for explaining the operation and configuration of each member of the plug-in type circuit breaker of the present embodiment are not absolute but relative, and although these indications are appropriate when each member of the plug-in type circuit breaker is in the position shown in the drawings, when the position is changed, the directions should be interpreted differently to correspond to the change.

Furthermore, the terms "first," "second," and the like in the description and claims of the present application or in the above-described drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential order, and may explicitly or implicitly include one or more of the features.

In the description of the present application, unless otherwise specified, "plurality" means two or more (including two), and similarly, "plural" means two or more (including two).

In the description of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., "connected" or "connected" of a mechanical structure may refer to a physical connection, e.g., a physical connection may be a fixed connection, e.g., a fixed connection by a fastener, such as a screw, bolt, or other fastener; the physical connection can also be a detachable connection, such as a mutual clamping or clamping connection; the physical connection may also be an integral connection, for example, a connection made by welding, gluing or integrally forming the connection. "connected" or "connected" of circuit structures may mean not only physically connected but also electrically connected or signal-connected, for example, directly connected, i.e., physically connected, or indirectly connected through at least one intervening component, as long as the circuits are in communication, or communication between the interiors of two components; signal connection may refer to signal connection through a medium, such as radio waves, in addition to signal connection through circuitry. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a closing state of an insertion type circuit breaker provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of an opening state of an insertion type circuit breaker provided in an embodiment of the present application. The circuit breaker that this application embodiment provided can be the circuit breaker of long and narrow type, and the length direction X's of circuit breaker size is greater than the width direction Y's of circuit breaker size, and each structure is inside compact arrangement at the circuit breaker. Taking the placement orientation of the circuit breaker in fig. 1 or 2 as an example, the dimension of the circuit breaker in the left-right direction in fig. 1 or 2 is larger than the dimension in the up-down direction, and the left-right direction in fig. 1 or 2 may be determined as the length direction X of the circuit breaker, and the up-down direction in fig. 1 or 2 may be determined as the width direction Y of the circuit breaker. Based on the placement orientation, the side wall on the left side of the housing is referred to as a left side wall, the side wall on the right side is referred to as a right side wall, the side wall on the upper side is referred to as an upper side wall A1, the side wall on the lower side is referred to as a lower side wall A2, the side wall on the front side is referred to as a top wall, and the side wall on the rear side is referred to as a bottom wall. However, when the placement orientation of the circuit breaker is changed, the longitudinal direction X of the circuit breaker, the width direction Y of the circuit breaker, the left and right side walls of the housing a, and the like should be changed adaptively.

As shown in fig. 1 and 2, the plug-in circuit breaker includes an electronic trip mechanism 1, a magnetic trip mechanism 2, and an operating mechanism 3. A movable contact 4 is fixed to the latch 31 of the operating mechanism 3. The action end of the electronic tripping mechanism 1 faces to a first part of the lock catch 31, the action end of the magnetic tripping mechanism 2 faces to a second part of the lock catch 31, and the first part and the second part are respectively positioned at two sides of the movable contact 4.

The operating mechanism 3 mainly includes a latch 31 and a trip 32, a moving contact 4 is fixed on the latch 31, and the operating mechanism 3 is used for controlling the movement of the moving contact 4 through the rotation of the latch 31 so as to close or open the circuit breaker. Illustratively, when the circuit breaker is closed, the latch 31 and the trip 32 are in a fastened state, and both rotate clockwise, and the movable contact 4 is driven by the latch 31 to move toward the stationary contact 5 until the movable contact 4 contacts the stationary contact 5. When the circuit breaker is opened, the lock catch 31 drives the movable contact 4 to rotate anticlockwise, so that the movable contact 4 is separated from the fixed contact 5, and the lock catch 31 and the trip catch 32 are unlocked to reset the operating mechanism 3.

The electronic tripping mechanism 1 and the magnetic tripping mechanism 2 are two fault protection mechanisms of the circuit breaker. Because the movable contact 4 is fixed on the latch 31, the movable contact 4 can be driven to be away from the fixed contact 5 only when the latch 31 rotates, and therefore, the action end of the electronic tripping mechanism 1 and the action end of the magnetic tripping mechanism 2 can be arranged close to the latch 31.

For example, the actuating end of the electronic trip mechanism 1 may be disposed toward a first portion of the latch 31, and the actuating end of the magnetic trip mechanism 2 may be disposed toward a second portion of the latch 31. The first portion and the second portion may be located on the same side of the movable contact 4, or may be located on both sides of the movable contact 4. It is worth pointing out here that when the operating mechanism 3 is disposed against the upper side wall A1 of the circuit breaker housing a as shown in fig. 1 or fig. 2, the right side space and the lower side space of the operating mechanism 3 are both closer to the latch 31, and can be used to dispose the electronic trip mechanism 1 and the magnetic trip mechanism 2. However, since the internal space of the circuit breaker is limited, if the first portion and the second portion are located at the same side of the movable contact 4, the electronic tripping mechanism 1 and the magnetic tripping mechanism 2 need to be squeezed together in the right space of the operating mechanism 3, or in the lower space of the operating mechanism 3, which is not convenient for flexibly arranging the electronic tripping mechanism 1, the magnetic tripping mechanism 2 and other structural members. And if first position and second position are located the both sides of moving contact 4, then electron tripping device 1 and magnetism tripping device 2 all have great installation space, and the overall arrangement of both can be more nimble to can also effectively utilize the space of operating device 3 both sides, be convenient for rationally arrange other structures of circuit breaker. It can be understood that, when the operating mechanism 3 is disposed at other positions, the relative position relationship between the electronic trip mechanism 1 and the magnetic trip mechanism 2 can be adaptively adjusted, and the embodiment of the present application is not particularly limited in this respect.

In the embodiment of the present application, the action end of the electronic tripping mechanism 1 and the action end of the magnetic tripping mechanism 2 face different portions of the latch 31, and the different portions are different portions of two sides of the moving contact 4, so when a main circuit of the circuit breaker breaks down, the electronic tripping mechanism 1 or the magnetic tripping mechanism 2 can both conveniently push the latch 31, thereby the moving contact 4 is driven by the latch 31 to move in a direction away from the static contact 5, so that the circuit breaker is opened, thereby the power circuit with a load where the circuit breaker is located is disconnected, and the use safety of the load is ensured.

It should be added here that the electronic tripping mechanism 1 and the magnetic tripping mechanism 2 are two different fault protection mechanisms, and the electronic tripping mechanism 1 and the magnetic tripping mechanism 2 both can respond when the current of the main circuit exceeds a normal current value (for example, the rated current of the circuit breaker), but the difference is that the electronic tripping mechanism 1 is used for conducting to push against the first portion to open the circuit breaker when the current of the main circuit exceeds a first current threshold (for example, when the current of the main circuit slightly exceeds the rated current or when the voltage is too high or too low or the temperature is too high, and other faults), and the magnetic tripping mechanism 2 is used for pushing against the second portion to open the circuit breaker when the current of the main circuit exceeds a second current threshold (for example, when the current of the main circuit exceeds the rated current by tens to hundreds times). The second current threshold value is larger than the first current threshold value, and the first current threshold value is larger than the rated current of the circuit breaker. In other words, the electronic trip mechanism 1 is used to respond to a smaller fault current, while the magnetic trip mechanism 2 is used to respond to a larger fault current. For example, when the rated current of the circuit breaker is In, the first current threshold may be a smaller current value such as 1.3In or 1.5In, and the second current threshold may be a current value of 8In or 11In or even higher.

The electronic trip unit 1 and the magnetic trip unit 2 respond to different fault currents, mainly because of the large difference between their coils. For example, the coil of the magnetic release mechanism 2 has a large wire diameter and a small number of turns, and responds only when a large fault current flows. The wire diameter of the coil in the electronic tripping mechanism 1 is small, the number of turns is large, and the electronic tripping mechanism 1 can respond quickly as long as a small fault current passes through the coil. It is worth pointing out that, the electronic tripping mechanism 1in the embodiment of the present application can not only respond to the fault current, but also respond in time when the main circuit has faults such as overvoltage, overtemperature, undervoltage, etc., so as to control the breaker to open the brake timely, and the electronic tripping mechanism responds to the faults more sensitively and rapidly, thereby improving the safety of the breaker in use. In addition, the magnetic release mechanism 2 in the embodiment of the present application can be used as a backup fault protection mechanism to respond to a short-circuit fault of a main circuit, so as to ensure the use safety of the circuit breaker.

In the embodiment of the present application, when the current of the main loop exceeds the first current threshold (i.e., the fault current is small), the electronic tripping mechanism 1 may push the latch 31, and when the current of the main loop exceeds the second current threshold (i.e., the fault current is large), the magnetic tripping mechanism 2 may push the latch 31, and the latch 31 drives the moving contact 4 to move in the direction away from the static contact 5, so as to open the circuit breaker, thereby disconnecting the power circuit with the load where the circuit breaker is located, and ensuring the use safety of the load. It is thus clear that no matter the size of fault current, this application can provide duplicate protection for the circuit breaker through electron tripping device 1 and magnetism tripping device 2, and the accurate, timely control circuit breaker separating brake of being convenient for to make timely, accurate response to fault current.

Based on the description of the foregoing embodiment, when the operating mechanism 3 is disposed against the upper side wall A1 of the circuit breaker case a as shown in fig. 1 or fig. 2, in order to facilitate flexible layout and to effectively utilize the spaces on both sides of the operating mechanism 3, one of the electronic trip mechanism 1 and the magnetic trip mechanism 2 may be located in the right space of the operating mechanism 3, and the other may be located in the lower space of the operating mechanism 3.

In some embodiments, when the electronic trip mechanism 1 is located in the right space of the operating mechanism 3 and the magnetic trip mechanism 2 is located in the lower space of the operating mechanism 3, as shown in fig. 1 and 2, the electronic trip mechanism 1 and the operating mechanism 3 may be arranged substantially side by side in the length direction X of the circuit breaker. The magnetic release mechanism 2 and the operating mechanism 3 may be arranged substantially side by side in the width direction Y of the circuit breaker.

The electronic trip unit 1 and the operating unit 3 are arranged substantially side by side in the longitudinal direction X of the circuit breaker, and it can be said that the projections of the electronic trip unit 1 and the operating unit 3in the longitudinal direction X of the circuit breaker mostly overlap. The magnetic release mechanism 2 and the operating mechanism 3 are arranged substantially side by side in the width direction Y of the circuit breaker, and it can be said that the projections of the magnetic release mechanism 2 and the operating mechanism 3in the width direction Y of the circuit breaker mostly overlap.

In this embodiment, the electronic tripping mechanism 1 and the magnetic tripping mechanism 2 are respectively arranged side by side along the length direction X of the circuit breaker and the width direction Y of the circuit breaker approximately with the operating mechanism 3, so that the electronic tripping mechanism 1 and the magnetic tripping mechanism 2 are arranged on two sides of the operating mechanism 3 along different directions of the circuit breaker, and thus, the spaces on two sides of the operating mechanism 3 can be effectively utilized, and the size of the circuit breaker is convenient to reduce.

In other embodiments, when the electronic trip mechanism 1 is located in the lower space of the operating mechanism 3 and the magnetic trip mechanism 2 is located in the right space of the operating mechanism 3, the electronic trip mechanism 1 and the operating mechanism 3 may be arranged substantially side by side in the width direction Y of the circuit breaker, and the magnetic trip mechanism 2 and the operating mechanism 3 may be arranged substantially side by side in the length direction X of the circuit breaker. The description of this embodiment is similar to the description of the previous embodiments and will not be explained in detail here.

In some embodiments, as shown in fig. 3, the electronic trip mechanism 1 includes an electronic push rod 11 and a rotating rod 12, the rotating rod 12 is rotatably connected to the housing a of the circuit breaker, one end of the rotating rod 12 abuts against the electronic push rod 11, and the other end of the rotating rod 12 is configured as an actuating end of the electronic trip mechanism 1. The rotating rod 12 is pushed by the electronic pushing rod 11 to rotate, so that the actuating end pushes the first portion along the rotating direction.

The rotating lever 12 may include a first rotating lever 121 and a second rotating lever 122 connected to each other and angled to each other. The first rotating rod 121 and the second rotating rod 122 may be integrally formed into the rotating rod 12, or may be formed separately, and then the ends of the first rotating rod 121 and the second rotating rod 122, which are close to each other, are connected to form the rotating rod 12.

The end portion of the first rotating rod 121 far from the second rotating rod 122 is the end of the first rotating rod 121 close to the electronic push rod 11, and is also the end of the rotating rod 12 close to the electronic push rod 11, and the end portion is the stressed end of the rotating rod 12, and the stressed end abuts against the electronic push rod 11. The end of the second rotating rod 122 away from the first rotating rod 121 is the end of the second rotating rod 122 close to the lock catch 31, and is also the end of the rotating rod 12 close to the lock catch 31, and the end is the actuating end of the rotating rod 12. When the electronic push rod 11 is ejected, the electronic push rod 11 can drive the rotating rod 12 to rotate clockwise, and the rotating rod 12 pushes the lock catch 31 to rotate counterclockwise when rotating clockwise, so that the lock catch 31 can drive the moving contact 4 to move towards the direction far away from the static contact 5, and the circuit breaker is opened.

In some possible implementation manners, a rotation hole may be formed in the middle of the rotation rod 12, a pin may be disposed at a position of the housing a opposite to the rotation hole, and the rotation rod 12 may be sleeved on the pin through the rotation hole, so that the rotation rod 12 may rotate around the pin, and the rotation rod 12 and the housing a may be rotatably connected. In other possible implementation manners, the middle part of the rotating rod 12 may be provided with a protrusion, the part of the housing a opposite to the protrusion may be provided with an accommodating groove, and the protrusion may be abutted in the accommodating groove in a limiting manner, so that the rotating rod 12 may rotate around the abutting part of the protrusion and the accommodating groove, and the rotating rod 12 is connected with the housing a in a rotating manner. The embodiment of the present application does not limit the rotational connection manner of the rotating rod 12 and the housing a.

In this embodiment, the rotating rod 12 is located between the electronic push rod 11 and the latch 31, the electronic push rod 11 can drive the rotating rod 12 to rotate in a fixed direction when being ejected, the rotating rod 12 abuts against a first portion of the latch 31 to drive the latch 31 to rotate in the fixed direction, so that the movable contact 4 moves in a direction away from the fixed contact 5 to open the circuit breaker, the certainty of the rotating direction of the latch 31 is ensured, the force is reliably and effectively transmitted, the movable contact and the fixed contact 5 can be reliably separated, the timeliness of the movement of the latch 31 is improved, the circuit breaker can be timely and reliably opened when a main loop fails, and the use safety of the circuit breaker is further improved.

In some embodiments, as shown in fig. 1, 2 and 4, the plug-in circuit breaker may further include a handle transmission mechanism 6, the handle transmission mechanism 6 extends toward the operating mechanism 3 along a length direction X of the circuit breaker, and the handle transmission mechanism 6 and the electronic trip mechanism 1 are located at both sides of the operating mechanism 3 along the length direction. The handle transmission mechanism 6 is in driving connection with the operating mechanism 3, and the handle transmission mechanism 6 can drive the operating mechanism 3 to act so as to open or close the circuit breaker.

The handle transmission mechanism 6 may include a handle 61 and a transmission structure 62, wherein the handle 61 is rotatably connected to the housing a and is drivingly connected to the operating mechanism 3 through the transmission structure 62. Generally, the handle 61 is at least partially located outside the housing a, and when the handle 61 is acted by an external force, the operating mechanism 3 can be driven by the transmission structure 62 to act, so that the operating mechanism 3 drives the movable contact 4 to move toward or away from the stationary contact 5, so as to close or open the circuit breaker.

The transmission structure 62 may be provided long in order to transmit the force at the handle 61 to the operating mechanism 3 reliably over a long distance. In the case where the transmission structure 62 is long and the space in the length direction X of the circuit breaker is larger than the space in the width direction, the handle transmission mechanism 6 can be extended toward the operating mechanism 3 along the length direction X of the circuit breaker, so that the force can be transmitted from the handle 61 to the operating mechanism 3 substantially along the length direction X of the circuit breaker, and the reliability of the force transmission is improved.

In some examples, as shown in fig. 1 and 2, the handle transmission mechanism 6 and the electronic trip mechanism 1 may be located on both sides of the operating mechanism 3 along the length direction X of the circuit breaker. When the electronic tripping mechanism 1 is located on the right side of the operating mechanism 3, the handle transmission mechanism 6 can be located on the left side of the operating mechanism 3, so that the electronic tripping mechanism 1 can push the lock catch 31 conveniently, the handle transmission mechanism 6 can transmit force to the operating mechanism 3 reliably in a long distance without being influenced, and the space in the length direction X of the circuit breaker can be reasonably utilized.

In this embodiment, when the handle transmission mechanism 6 is acted by an external force, the handle transmission mechanism can drive the operating mechanism 3 to act, so that the operating mechanism 3 drives the moving contact 4 to move towards or away from the static contact 5, so as to close or open the circuit breaker. That is, the switching-on or switching-off of the circuit breaker can be manually controlled by the handle transmission mechanism 6. In addition, the layout facilitates reasonable utilization of the space of the breaker in the length direction X.

In some embodiments, as shown in fig. 1, 2 and 5, the plug-in circuit breaker may further comprise an electrically operated mechanism 7. The electric operating mechanism 7 and the handle transmission mechanism 6 are positioned on the same side of the operating mechanism 3 along the length direction X of the circuit breaker; along the width direction Y of the circuit breaker, the handle transmission mechanism 6 and the electric operating mechanism 7 are respectively positioned in the spaces at two sides in the shell A. The output end of the electric operating mechanism 7 is connected to the operating mechanism 3in a driving mode, and the electric operating mechanism 7 can drive the operating mechanism 3 to act so that the circuit breaker is opened or closed.

The electric operating mechanism 7 may include a motor 71 and a gear set 72, wherein the motor 71 is electrically connected to a circuit board of the circuit breaker for receiving a signal transmitted from the circuit board to start or stop the operation. The last gear in the gear train 72 is the output thereof, which is also the output of the electric actuator 7 for driving connection with the actuator 3. When the circuit board controls the motor 71 to rotate, the motor 71 drives the operating mechanism 3 to act through the transmission of the gear set 72, so that the operating mechanism 3 drives the moving contact 4 to move towards or away from the fixed contact 5, so as to close or open the circuit breaker. In the embodiment of the present application, no matter whether the motor 71 rotates to realize switching on or switching off of the circuit breaker, the rotation direction of the motor 71 may always be the same direction. For example, the rotation direction of the motor 71 may always be clockwise. Thus, the life of the motor 71 can be extended.

Similarly to the handle gear 6, to drive the actuator 3 by the electric actuator 7, the output of the electric actuator 7 can be arranged toward the actuator 3. In some examples, as shown in fig. 1 and 2, the electric operating mechanism 7 may be located on the left side of the operating mechanism 3in the length direction with its output end facing the operating mechanism 3. Illustratively, when the handle transmission mechanism 6 and the operating mechanism 3 are located together on the left side of the operating mechanism 3, one of the handle transmission mechanism 6 and the operating mechanism 3 may be located in one space in the width direction in the housing a (e.g., an upper space in the width direction in the housing a), and the other may be located in the other space in the width direction in the housing a (e.g., a lower space in the width direction in the housing a). Thus, the operation of the operating mechanism 3 is controlled by the handle transmission mechanism 6 and the electric operating mechanism 7, and the space on the left side of the operating mechanism 3 can be reasonably utilized. It will be appreciated that the electric operating mechanism 7 and the handle transmission mechanism 6 may also be co-located in the space to the right of the operating mechanism 3in the length direction X of the circuit breaker. Regarding the relative position relationship of the handle transmission mechanism 6, the electric operating mechanism 7 and the operating mechanism 3, those skilled in the art can make reasonable design according to practical situations, and the embodiment of the present application is not limited in this respect.

In this embodiment, when the electric operating mechanism 7 is driven, the operating mechanism 3 may be driven to operate, so that the operating mechanism 3 drives the moving contact 4 and the static contact 5 to switch on or off, thereby implementing remote control of the circuit breaker. According to the embodiment of the application, the breaker can be manually controlled to be switched on or switched off through the handle transmission mechanism 6, and the breaker can be remotely controlled to be switched on or switched off through the electric operating mechanism 7, so that the use flexibility and the operation convenience of the breaker are improved. In addition, the electric operating mechanism 7 and the manual operating mechanism are positioned at the same side of the operating mechanism 3, so that the internal space of the circuit breaker can be reasonably planned.

In some embodiments, as shown in fig. 4, the handle transmission mechanism 6 may include a transmission member 621, an output end of the electric operating mechanism 7 is connected to the transmission member 621 in a driving manner, and the electric operating mechanism 7 drives the operating mechanism 3 to operate through the transmission member 621, so as to close the circuit breaker.

The transmission member 621 may be a part of the transmission structure 62 in the handle transmission mechanism 6, the transmission structure 62 may further include a first connection rod 622 and a second connection rod 623, the handle 61 may be movably connected to the transmission member 621 through the first connection rod 622, and the transmission member 621 may be movably connected to the operating mechanism 3 through the second connection rod 623. The movable connection means that the first connecting rod 622 can flexibly rotate relative to the transmission member 621, and the second connecting rod 623 can flexibly rotate relative to the transmission member 621. The transmission part 621 is arranged between the handle 61 and the operating mechanism 3, so that the function of connecting adjacent structural parts can be achieved, the degree of freedom of the first connecting rod 622 and the second connecting rod 623 can be increased, and the transmission structure 62 of the handle transmission mechanism 6 can be reasonably and flexibly arranged in the limited space of the shell A on the basis of realizing the long-distance transmission of the handle transmission mechanism 6.

Based on the description of the foregoing embodiment, along the length direction X of the circuit breaker, the electric operating mechanism 7 and the handle transmission mechanism 6 are located on the same side of the operating mechanism 3, and both the handle transmission mechanism 6 and the electric operating mechanism 7 need to be connected to the operating mechanism 3in a driving manner to drive the operating mechanism 3 to act. The inner space of the circuit breaker shell A is limited, if a connecting piece is arranged between the handle 61 and the operating mechanism 3 to realize the driving connection of the handle transmission mechanism 6 and the operating mechanism 3, and meanwhile, a connecting piece is also arranged between the output end of the electric operating mechanism 7 and the operating mechanism 3 to realize the driving connection of the electric operating mechanism 7 and the operating mechanism 3, so that the design difficulty is increased. Based on this, in the case that the handle transmission mechanism 6 comprises a transmission member 621, and the handle 61 is drivingly connected to the operating mechanism 3 through the transmission member 621, it is conceivable to make the electric operating mechanism 7 and the handle 61 share the transmission member 621 for drivingly connecting to the operating mechanism 3. For example, the output of the electric actuator 7 may be drivingly connected to the transmission 621, which in turn is drivingly connected to the actuator 3 via the transmission 621. In this way, the drive connection between the electric operating element 7 and the operating element 3 can be realized by the connection of the common handle gear 6 without additionally providing a connection between the output of the electric operating element 7 and the operating element 3.

In this embodiment, the transmission member 621 of the handle transmission mechanism 6 not only can serve to drivingly connect the handle 61 to the operating mechanism 3, but also can facilitate reasonable and flexible arrangement of the transmission structure 62 of the handle transmission mechanism 6 in the limited space of the housing a. In addition, in the case where the handle 61 is drivingly connected to the operating mechanism 3 through the transmission 621, the output end of the electric operating mechanism 7 is drivingly connected to the transmission 621 so that the electric operating mechanism 7 can be drivingly connected to the operating mechanism 3 through the same transmission 621. That is, the handle transmission mechanism 6 and the electric operating mechanism 7 may share the transmission member 621. Thus, the number of parts in the housing A can be reduced, thereby facilitating the reduction of the size of the circuit breaker.

In some embodiments, as shown in fig. 5, the electric operating mechanism 7 comprises a multi-stage gear having a driving relationship, an output gear of the multi-stage gear being provided with a first sector gear 73, and the transmission member 621 being provided with a gear intermittently meshing with the first sector gear 73.

The gear train 72 of the electric operator 7 may include multiple gears in driving relationship, each gear including a drive gear and a driven gear. The output gear of the multi-stage gear is the driven gear of the last stage gear. Fig. 5 shows a circuit breaker in which an electric operating mechanism 7 includes three-stage gears, a motor 71 of the electric operating mechanism 7 is fixedly connected to a first driving gear 721, the first driving gear 721 is engaged with a first driven gear 722, the first driven gear 722 is fixedly connected to a second driving gear 723, the second driving gear 723 is engaged with a second driven gear 723, the second driven gear 723 is fixedly connected to a third driving gear 724, the third driving gear 724 is engaged with a third driven gear 725, and the third driven gear 725 is provided with a first sector gear 73. The first driving gear 721 and the first driven gear 722 are first stage gears, the second driving gear 723 and the second driven gear 723 are second stage gears, and the third driving gear 724 and the third driven gear 725 are third stage gears. The second driving gear is shielded by the first driven gear 722, and is not shown in fig. 5.

It should be noted that fig. 5 illustrates the structure of the gear set 72 in the electric operating mechanism 7 as an example, but this does not limit the number of gears and the transmission manner in the electric operating mechanism 7. In addition, the motor 71 and the first driving gear 721, or the first driven gear 722 and the second driving gear, or the second driven gear 723 and the third driving gear 724, or the third driven gear 725 and the first sector gear 73 may be coaxially disposed, respectively, so that the two fixedly connected coaxially rotate. Moreover, the size of the end face of the driving gear in each stage of gear can be smaller than that of the end face of the driven gear in the stage of gear, so that the transmission ratio and the transmission torque can be increased under the condition that the energy consumption of the motor 71 is certain, or the energy consumption of the motor 71 can be reduced under the condition that the output transmission ratio and the output transmission torque are certain.

Based on the previous embodiment, the output of the electric operator 7 may be drivingly connected to the transmission 621. In order to realize the driving connection between the output end of the electric operating mechanism 7 and the transmission member 621, a first gear may be provided on the driven gear of the last gear among the multiple gears of the electric operating mechanism 7, and another second gear having a meshing relationship with the first gear may be provided on the transmission member 621, so that when the first gear and the second gear mesh, the output end of the electric operating mechanism 7 may be drivingly connected to the transmission member 621. The engagement includes constant engagement and intermittent engagement, wherein the constant engagement means that the first gear and the second gear are always kept in an engaged state at any time when the motor 71 rotates; and the intermittent engagement means that the first gear and the second gear are in an engaged state at some timing when the motor 71 rotates, and the first gear and the second gear are disengaged at other timing when the motor 71 rotates.

For the situation that the first gear and the second gear are always engaged, when the motor 71 rotates forward or backward, the transmission member 621 can rotate clockwise or counterclockwise to drive the operating mechanism 3 to move, so as to implement switching on or switching off of the circuit breaker. In this case, the circuit breaker can be switched on or off only by the electric operation mechanism 7, and the circuit breaker cannot be switched on or off by the manual transmission mechanism.

For the case that the first gear and the second gear are intermittently meshed, taking the forward rotation of the motor 71 as an example, if the two gears are meshed, the first gear can drive the second gear to rotate counterclockwise, so as to drive the transmission member 621 to rotate counterclockwise. When the transmission member 621 rotates counterclockwise, the operation mechanism 3 is driven to rotate clockwise, so as to close the circuit breaker. After closing, the first gear and the second gear are disengaged, at the moment, the breaker can be controlled to be opened through the handle transmission mechanism 6, and the breaker can be controlled to be closed through the handle transmission mechanism 6 after opening, so that the situation that the electric operating mechanism 7 controls the breaker to be closed and the handle transmission mechanism 6 controls the breaker to be opened and closed can be achieved without mutual interference.

From the above analysis, in order to maximize the utilization of the functions of the electric operating mechanism 7 and the handle transmission mechanism 6, the fitting relationship of these two gears may be set to be intermittently meshed. To achieve intermittent meshing of the two gears, in some embodiments, the first sector gear 73 may be provided on the driven gear of the last stage gear of the multi-stage gear, and any gear having a meshing relationship with the first sector gear 73 may be fixed to the transmission member 621.

Further, since the actual rotational angle of the gear on the transmission member 621 is small when the gear on the transmission member 621 intermittently engages with the first sector gear 73, and the number of teeth for engaging with the first sector gear 73 is also small, if the gear on the transmission member 621 is provided as a cylindrical gear, it is necessary to occupy a large space in the width direction Y of the circuit breaker, which is disadvantageous to the miniaturization of the circuit breaker. Therefore, in order to save space in the width direction Y of the circuit breaker, the gear on the transmission member 621 may be provided as the second sector gear, so that not only intermittent engagement with the first sector gear 73 can be ensured but also space in the width direction Y of the circuit breaker can be saved.

In this embodiment, the first sector gear 73 is disposed on the driven gear of the last gear in the multi-stage gears, and the transmission member 621 is disposed with a gear intermittently engaged with the first sector gear 73, so that the electric operating mechanism 7 and the handle transmission mechanism 6 can independently control the opening and closing of the circuit breaker without interfering with each other, and the space in the width direction Y of the circuit breaker can be saved.

In some embodiments, the electrically operated mechanism 7 has an escape region in the thickness direction Z of the circuit breaker, the handle transmission mechanism 6 being located at least partially in the escape region.

In the case of the common transmission 621 of the electric operating mechanism 7 and the handle transmission mechanism 6, and the electric operating mechanism 7 and the handle 61 are both drivingly connected to the operating mechanism 3 through the transmission 621, the electric operating mechanism 7 and the handle transmission mechanism 6 necessarily have an intersection area. The intersection region refers to a partial region in the housing a common to both.

Referring to fig. 6, the escape area of the electric operating mechanism 7 in the thickness direction may be an area where the third driven gear 725 of the gear group 72 is located. For example, the third driven gear 725 may be disposed near the bottom wall of the housing a such that the space of the third driven gear 725 near the top wall of the housing a forms an escape area. Alternatively, the third driven gear 725 may be disposed adjacent to the top wall of the housing a such that the space of the third driven gear 725 adjacent to the bottom wall of the housing a forms an escape area. In this way, the transmission member 621 of the handle transmission mechanism 6, and the connection member between the transmission member 621 and the operating mechanism 3 can be located in the avoiding region without occupying additional space in the thickness direction of the housing a, which is convenient for saving space in the thickness direction.

Based on the description of the foregoing embodiments, when the main circuit has an overload or short-circuit fault, the electronic trip mechanism 1 or the magnetic trip mechanism 2 can timely control the opening of the circuit breaker. And when the circuit breaker separating brake, moving contact 4 removes towards the direction of keeping away from static contact 5, can be along with the production of electric arc when moving contact 4 and static contact 5 separate each other, if do not in time shift and extinguish these electric arcs, will cause the damage to the contact to can influence the normal use of circuit breaker. Based on this, an arc extinguishing mechanism 8 may be provided, and the arc may be extinguished by the arc extinguishing mechanism 8.

In some embodiments, as shown in fig. 1 and fig. 2, when the plug-in circuit breaker is provided with the arc extinguishing mechanism 8, the arc extinguishing mechanism 8 is located on a side of the movable contact 4 away from the magnetic trip mechanism 2 along the length direction X of the circuit breaker, and the arc extinguishing mechanism 8 is arranged side by side with the electronic trip mechanism 1 along the width direction Y of the circuit breaker. One end of the coil of the magnetic tripping mechanism 2, which is close to the arc extinguishing mechanism 8, extends to the fixed contact 5 of the circuit breaker and is connected with the fixed arc striking plate 81 of the arc extinguishing mechanism 8.

It will be appreciated that in order to facilitate rapid entry of the arc into the arc extinguishing mechanism 8, the arc extinguishing mechanism 8 may be disposed adjacent to the movable contact 4 and the stationary contact 5. For example, when the electronic trip mechanism 1 and the magnetic trip mechanism 2 are disposed on two sides of the operating mechanism 3 along different directions of the circuit breaker, the arc extinguishing mechanism 8 may be located on one side of the movable contact 4 away from the magnetic trip mechanism 2 along a length direction X of the circuit breaker and disposed side by side with the electronic trip mechanism 1 along a width direction Y of the circuit breaker. Therefore, the arc extinguishing mechanism 8 can be arranged close to the movable contact 4 and the fixed contact 5, and the space surrounded by the electronic tripping mechanism 1, the movable contact 4 and the magnetic tripping mechanism 2 can be reasonably and effectively utilized.

In the switching-on and switching-off process of the circuit breaker, the fixed contact 5 and the fixed arc striking plate 81 are both fixed, and in some embodiments, one end of the coil of the magnetic trip mechanism 2 close to the arc extinguishing mechanism 8 may be extended to the fixed contact 5 and connected with the fixed arc striking plate 81 through the fixed contact 5. Therefore, no gap exists between the static contact 5 and the static arc striking plate 81, so that the electric arc around the static contact 5 can be directly introduced into the arc extinguish chamber by the static arc striking plate 81 without jumping, and the transfer rate of the electric arc around the static contact 5 is improved.

In this embodiment, the arc extinguishing mechanism 8 is disposed adjacent to the moving contact 4 and the stationary contact 5, so as to facilitate timely transferring and extinguishing of an arc generated when the moving contact 4 and the stationary contact 5 are separated. Arc extinguishing mechanism 8 is located one side of magnetic release mechanism 2 along length direction, sets up side by side along width direction and electron tripping device 1, the space in the rational utilization circuit breaker of being convenient for. In addition, the coil of the magnetic separation structure is connected with the static arc striking plate 81 through the static contact 5, so that the electric arc near the static contact can be conveniently and quickly led into the arc extinguishing chamber.

In some embodiments, the plug-in circuit breaker may further include a power-taking feedback mechanism 9, and the power-taking feedback mechanism 9 is located between the arc extinguishing mechanism 8 and the power terminal 10 of the circuit breaker along the length direction. The power-taking feedback mechanism 9 is connected to the operating mechanism 3 and the power terminal 10, and is used for obtaining electric energy of a main loop of the circuit breaker and feeding back on-off conditions of the main loop.

The power terminals 10 may be plug-in terminals such that the circuit breaker is plugged in with a plug in the cabinet through the power terminals 10 to connect the circuit breaker into a circuit with a load.

The power-taking feedback mechanism 9 may include three power-taking terminals and a circuit board, the power-taking feedback mechanism 9 is connected to the operating mechanism 3, and one of the three power-taking terminals may be connected to the main circuit, so that the power-taking feedback mechanism 9 is electrically connected to the main circuit. The power-taking feedback mechanism 9 is connected with the power terminal 10, and the other two power-taking terminals of the three power-taking terminals can be connected with the power terminal 10 so as to electrify the circuit board, so that the power-taking feedback mechanism 9 works normally. After the power-taking feedback mechanism 9 is powered on and connected to the main loop, if the power-taking feedback mechanism 9 can acquire an electric signal from the main loop, it indicates that the main loop is currently in a conducting state and the circuit breaker is currently in a closing state; if the electricity-taking feedback mechanism 9 cannot collect an electric signal from the main circuit, it indicates that the main circuit is currently in a disconnected state and the circuit breaker is currently in an open state.

In some examples, when power terminal 10 is located the right side of circuit breaker, get electric feedback mechanism 9 and can be located between arc extinguishing mechanism 8 and the power terminal 10 of circuit breaker along length direction, get electric feedback mechanism 9 and be close to power terminal 10 and set up on the one hand, can be convenient for get the electric terminal and be connected with power terminal 10, on the other hand, get electric feedback mechanism 9 and be located between arc extinguishing mechanism 8 and power terminal 10 as a relatively independent mechanism, can reduce the possibility of getting electric feedback mechanism 9 and other mechanism mutual interference, still can dodge bigger installation space for other great mechanism of relevance.

In this embodiment, the power-taking feedback mechanism 9 is connected to the power supply terminal 10, and can obtain electric energy from the power supply terminal 10 to normally operate. The electricity-taking feedback mechanism 9 is further connected to the operating mechanism 3, can be connected into the main loop, and feeds back the on-off condition of the main loop according to the acquisition condition of the electric signals of the main loop, so that the on-off condition of the circuit breaker can be fed back in time. In addition, the power-taking feedback mechanism 9 is located between the arc extinguishing mechanism 8 and the power terminal 10 of the circuit breaker along the length direction, so that the possibility of mutual interference between the power-taking feedback mechanism 9 and other mechanisms can be reduced while the power-taking terminal is connected with the power terminal 10, and larger installation space can be avoided for other mechanisms with larger relevance.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A plug-in circuit breaker, comprising: the magnetic trip device comprises an electronic trip mechanism, a magnetic trip mechanism and an operating mechanism, wherein a moving contact is fixed on a lock catch of the operating mechanism;

the action end of the electronic tripping mechanism faces to a first part of the lock, the action end of the magnetic tripping mechanism faces to a second part of the lock, and the first part and the second part are respectively positioned at two sides of the moving contact.

2. The plug-in circuit breaker of claim 1, wherein the electronic trip mechanism and the operating mechanism are disposed substantially side-by-side in a length direction of the circuit breaker;

the magnetic release mechanism and the operating mechanism are arranged substantially side by side in a width direction of the circuit breaker.

3. The plug-in circuit breaker of claim 1, wherein the electronic trip mechanism and the operating mechanism are disposed substantially side-by-side in a width direction of the circuit breaker;

the magnetic release mechanism and the operating mechanism are arranged substantially side by side in a length direction of the circuit breaker.

4. The plug-in circuit breaker of claim 2, further comprising a handle actuator extending along a length of the circuit breaker toward the operating mechanism, wherein the handle actuator and the electronic trip mechanism are located on opposite sides of the operating mechanism along the length;

the handle transmission mechanism is in driving connection with the operating mechanism and can drive the operating mechanism to act so as to open or close the circuit breaker.

5. The plug-in circuit breaker according to claim 4, further comprising an electrically operated mechanism;

along the length direction of the circuit breaker, the electric operating mechanism and the handle transmission mechanism are positioned on the same side of the operating mechanism; the handle transmission mechanism and the electric operating mechanism are respectively positioned in the space on two sides in the shell of the circuit breaker along the width direction of the circuit breaker;

the output end of the electric operating mechanism is connected to the operating mechanism in a driving mode, and the electric operating mechanism can drive the operating mechanism to act to enable the breaker to be opened or closed.

6. The plug-in circuit breaker according to claim 5, wherein the handle transmission mechanism comprises a transmission member, an output end of the electric operating mechanism is connected to the transmission member in a driving manner, and the electric operating mechanism drives the operating mechanism to act through the transmission member, so that the circuit breaker is switched on.

7. A plug-in circuit breaker according to claim 6, characterized in that the electrically operated mechanism comprises a multi-stage gear having a driving relationship, the output gear of the multi-stage gear being provided with a first sector gear, the transmission being provided with a gear wheel which meshes intermittently with the first sector gear.

8. The plug-in circuit breaker according to claim 5, characterized in that the electrically operated mechanism has an escape region in the thickness direction of the circuit breaker, the handle transmission mechanism being located at least partially in the escape region.

9. The plug-in circuit breaker according to claim 1, further comprising an arc extinguishing mechanism, wherein the arc extinguishing mechanism is located on a side of the movable contact away from the magnetic trip mechanism along a length direction of the circuit breaker, and the arc extinguishing mechanism is arranged side by side with the electronic trip mechanism along a width direction of the circuit breaker;

and one end of the coil of the magnetic release mechanism, which is close to the arc extinguishing mechanism, extends to the fixed contact of the circuit breaker and is connected with the static arc striking plate of the arc extinguishing mechanism.

10. The plug-in circuit breaker of claim 9, further comprising a power-on feedback mechanism located along the length direction between the arc extinguishing mechanism and a power terminal of the circuit breaker;

the power-taking feedback mechanism is connected to the operating mechanism and the power terminal, and is used for acquiring electric energy of a main loop of the circuit breaker and feeding back the on-off condition of the main loop.

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