CN212750744U - Modular operation structure and circuit breaker - Google Patents

Abstract

The utility model provides a modular operation structure and a circuit breaker, which relates to the technical field of low-voltage electrical switches, and comprises a moving contact, an operation assembly, and a first side plate and a second side plate which are arranged oppositely; the operating assembly is positioned between the first side plate and the second side plate and is respectively connected with the first side plate and the second side plate in a rotating way; the moving contact is connected with the first side plate in a rotating mode, is connected with the operating assembly in a transmission mode and is used for driving the moving contact to be close to or far away from a static contact matched with the moving contact to be arranged when the operating assembly acts. When the circuit breaker is assembled and adjusted, the modular operation structure is only required to be integrally assembled to the shell of the circuit breaker, so that the whole modular operation structure is matched with peripheral parts, and the whole circuit breaker can be assembled. The circuit breaker effectively avoids the problem that each part in the operation assembly needs to be assembled with each other when the existing circuit breaker is assembled, and meanwhile, the coordination assembly with the external part is also considered.

Description

Modular operation structure and circuit breaker

Technical Field

The utility model relates to a low pressure electrical switch technical field particularly, relates to a modular operation structure and circuit breaker.

Background

Along with the rapid development of economy, the living standard of people is remarkably improved, and the electricity safety is more comprehensively known. In order to increase the safety of the electricity consumption, a circuit breaker needs to be connected into the power grid. The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. They are generally classified into high-voltage circuit breakers and low-voltage circuit breakers according to the range of use. The low-voltage circuit breaker is an electric appliance with large use amount and wide use range.

The existing circuit breaker generally directly assembles each part in an operation structure on a shell of the circuit breaker, and the mode has the problem of difficult installation and debugging.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modularization operation structure and circuit breaker to the not enough among the above-mentioned prior art to solve the problem of operation structure installation and debugging difficulty among the current circuit breaker.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

in one aspect of the embodiments of the present invention, a modular operation structure is provided, which includes a moving contact, an operation assembly, and a first side plate and a second side plate that are oppositely disposed; the operating assembly is positioned between the first side plate and the second side plate and is respectively connected with the first side plate and the second side plate in a rotating way; the moving contact is connected with the first side plate in a rotating mode, is connected with the operating assembly in a transmission mode and is used for driving the moving contact to be close to or far away from a static contact matched with the moving contact to be arranged when the operating assembly acts.

Optionally, the moving contact comprises a rotating member and a contact member which are connected with each other; a rotating shaft is also arranged on the first side plate; the rotating piece is connected with the first side plate in a rotating mode through the rotating shaft, the operating assembly is connected with the rotating piece in a transmission mode, and the contact piece is used for being in contact with or separated from the static contact.

Optionally, the rotating member and the contact member are respectively located on a side of the first side plate away from the second side plate.

Optionally, the rotating part includes a connecting part and a first rotating part and a second rotating part which are oppositely arranged; the first rotating part is connected with the second rotating part through a connecting part, and the first rotating part and the second rotating part are respectively in rotating connection with the first side plate through rotating shafts; the operating assembly is in transmission connection with the connecting part; the contact member is connected to the first rotating portion.

Optionally, the second rotating portion is located between the first side plate and the second side plate, and the first rotating portion and the contact element are located on a side of the first side plate away from the second side plate.

Optionally, the operating assembly comprises an actuating member and a transmission assembly; the first end of the action piece is rotatably arranged on the first side plate, the second end of the action piece is hinged with the first end of the transmission component, and the second end of the transmission component is hinged with the moving contact.

Optionally, the operating assembly further comprises an elastic member; the transmission assembly comprises a first transmission piece and a second transmission piece which is coaxially and rotatably arranged with the moving contact; the first end of the first transmission piece is hinged with the second end of the action piece; the second end of the first transmission piece is hinged with the first end of the second transmission piece; one end and the second driving medium butt, the other end and the moving contact butt of elastic component for provide the effort that is close to each other so that moving contact and second driving medium butt to moving contact and second driving medium.

Optionally, the operating assembly further comprises a handle and a connecting rod; the handle is hinged with the third end of the action piece through the connecting rod.

In another aspect of the embodiments of the present invention, a circuit breaker is provided, which includes a housing, a fixed contact, and any one of the above modular operation structures; the modularized operation structure is arranged on the shell, the static contact is also arranged on the shell, and the static contact and the moving contact in the modularized operation structure are correspondingly arranged.

Optionally, the circuit breaker further comprises an arc extinguishing device; the arc extinguishing device is arranged corresponding to the moving contact and the static contact.

The beneficial effects of the utility model include:

the utility model provides a modularization operation structure, including first curb plate, second curb plate, moving contact and operating element. The first side plate and the second side plate are arranged oppositely, the operating assembly is arranged between the first side plate and the second side plate and is respectively in rotating connection with the first side plate and the second side plate, and therefore the first side plate, the second side plate and the operating assembly form a whole. The moving contact is arranged on the first side plate, and the moving contact and the first side plate can be connected in a rotating mode for opening and closing. Meanwhile, the operation assembly is required to be in transmission connection with the moving contact, so that when the operation assembly acts, the moving contact can be driven to move towards the direction of the fixed contact arranged on the outer portion or towards the direction far away from the fixed contact on the outer portion, and the opening and closing function of the circuit breaker can be achieved conveniently. Through foretell mode, can be when the equipment is transferred to the circuit breaker, only need with this modularization operation structure whole assembly to the casing of circuit breaker to make this modularization operation structure whole and peripheral spare part, for example handle, quiet contact etc. cooperate and can accomplish the assembly to whole circuit breaker. Meanwhile, the modularized operation structure is more beneficial to improving the integration and modularization of the operation assembly through the form that the first side plate and the second side plate are oppositely arranged by arranging the operation assembly between the first side plate and the second side plate. The circuit breaker effectively avoids the problem that each part in the operation assembly needs to be assembled with each other when the existing circuit breaker is assembled, and meanwhile, the coordination assembly with the external part is also considered.

The utility model also provides a circuit breaker sets up foretell modularization operation structure on the casing of circuit breaker, simultaneously, also corresponds the setting with the static contact on the casing for static contact and moving contact correspond. Thereby improving the efficiency of the circuit breaker in assembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a modular operation structure according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a modular operation structure according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a modular operation structure according to an embodiment of the present invention;

fig. 4 is a fourth schematic structural diagram of a modular operation structure according to an embodiment of the present invention;

fig. 5 is a fifth schematic structural view of a modular operation structure according to an embodiment of the present invention.

Icon: 110-a first side panel; 111-a rotating shaft; 120-a second side panel; 200-an operating component; 210-an action; 211-a first torsion spring; 212-a handle; 213-connecting rod; 220-a clip; 221-a second torsion spring; 230-a first link; 240-a second link; 250-a pendulum; 251-a chute; 260-a limiting part; 270-a second transmission; 271-a bump; 280-tension spring; 290-an elastic member; 300-moving contact; 310-a contact; 320-a rotation member; 321-a first rotating part; 322-a second rotating part; 323-a connecting portion; 400-a static contact; 700-a heat sink; 800-a release; 900-shell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Miniature low-voltage circuit breakers are one of the most widely used terminal protection appliances in building electrical terminal distribution units. Because each spare part in the current circuit breaker all is the direct assembly establish on the casing, so, in the assembly of dispatching from the factory, it is great to carry out the degree of difficulty of accurate dress accent to it, consequently, this application provides a modularization operation structure and circuit breaker, through carrying out the modularization with the operation structure in the circuit breaker to in the assembly of dispatching from the factory, make operation structure assemble as a whole and peripheral other spare parts, the effectual degree of difficulty that reduces the assembly improves the efficiency of the assembly of dispatching from the factory.

In one aspect of the embodiment of the present invention, a modular operation structure is provided, which includes a movable contact 300, an operation assembly 200, and a first side plate 110 and a second side plate 120 disposed oppositely; the operating assembly 200 is located between the first side plate 110 and the second side plate 120, and is respectively connected to the first side plate 110 and the second side plate 120 in a rotating manner; the movable contact 300 is rotatably connected to the first side plate 110, and the movable contact 300 is in transmission connection with the operating assembly 200, so as to drive the movable contact 300 to approach or be away from the stationary contact 400 disposed in cooperation with the movable contact 300 when the operating assembly 200 acts.

As shown in fig. 1, the modular operating structure includes a first side plate 110, a second side plate 120, a movable contact 300, and an operating assembly 200. The first side plate 110 and the second side plate 120 are oppositely arranged, and the operating assembly 200 is arranged between the first side plate 110 and the second side plate 120 and is respectively rotatably connected with the first side plate 110 and the second side plate 120, so that the first side plate 110, the second side plate 120 and the operating assembly 200 form a whole. The movable contact 300 is disposed on the first side plate 110, and in order to facilitate opening and closing, the movable contact 300 may be rotatably connected to the first side plate 110. Meanwhile, the operation assembly 200 and the movable contact 300 need to be in transmission connection, so that when the operation assembly 200 acts, the movable contact 300 can be driven to move towards the direction of the externally arranged fixed contact 400 or towards the direction away from the externally arranged fixed contact 400, so as to realize the opening and closing function of the circuit breaker.

Through the above manner, the operation assembly 200 and the movable contact 300 can be disposed on the first side plate 110 and the second side plate 120 together, so as to form a modular operation structure based on the first side plate 110 and the second side plate 120, and in the modular operation structure, the whole operation assembly 200 can drive the movable contact 300 to perform opening and closing movements. When the circuit breaker is assembled and adjusted, the whole modular operation structure is only required to be assembled on the shell 900 of the circuit breaker, so that the whole modular operation structure is matched with peripheral parts, such as the handle 212, the fixed contact 400 and the like, and the whole circuit breaker can be assembled. Meanwhile, the modular operation structure is more advantageous to improve the integration and modularization of the operation assembly 200 by disposing the operation assembly 200 between the first side plate 110 and the second side plate 120 in a manner that the first side plate 110 and the second side plate 120 are oppositely disposed. The problem that each part in the operation assembly 200 needs to be assembled with each other and the coordination assembly with the external parts is also considered when the existing circuit breaker is assembled is effectively avoided. It should be noted that the operating assembly 200 is generally an assembly for controlling the movement of the movable contact 300 through a linkage relationship in the circuit breaker, and a specific transmission relationship thereof is not limited in this embodiment. It should be noted that, in the present application, it is not limited whether the movable contact 300 is rotatably connected to the second side plate 120, that is, the movable contact 300 may be rotatably connected to only the first side plate 110, or may be rotatably connected to both the first side plate 110 and the second side plate 120.

Alternatively, the movable contact 300 includes a rotating member 320 and a contact member 310 connected to each other; the first side plate 110 is also provided with a rotating shaft 111; the rotating member 320 is rotatably connected to the first side plate 110 via the rotating shaft 111, the operating assembly 200 is drivingly connected to the rotating member 320, and the contact member 310 is used for contacting with or separating from the stationary contact 400.

For example, as shown in fig. 1, when the movable contact 300 includes a rotating element 320 and a contact element 310, in order to realize a stable operation of the movable contact 300, i.e., an opening and closing operation, the rotating element 320 should be connected to the contact element 310, and the connection manner may be a snap connection, or may be a bonding or integral molding manner. In order to achieve good contact between the moving contact 300 and the static contact 400 (which is generally a structure fixedly arranged on the housing 900) after multiple switching-on and switching-off motions, the moving path of the moving contact 300 can be kept unchanged all the time by fixing the rotating position of the moving contact, so that the circuit breaker can still have stable switching-on and switching-off capabilities after being used for a long time. That is, the rotating shaft 111 is provided on the first side plate 110, and the rotating member 320 is rotatably provided on the rotating shaft 111 to be rotatably connected to the first side plate 110, and the rotating position thereof is fixed. Meanwhile, the operation assembly 200 is in transmission connection with the rotating member 320 to realize the transmission of the operation assembly 200 and the movable contact 300.

Optionally, the rotating element 320 and the contact element 310 are respectively located on a side of the first side plate 110 away from the second side plate 120.

For example, as shown in fig. 1 and 2, the rotating element 320 and the contact element 310 may be both located on a side of the first side plate 110 away from the second side plate 120, that is, the movable contact 300 is directly disposed on an outer side of the first side plate 110, and at this time, since the movable contact 300 is located outside the first side plate 110 and the second side plate 120, a distance between the first side plate 110 and the second side plate 120 may be further reduced, so as to achieve a purpose of reducing a thickness of the modular operating structure. At this time, the remaining space on the same side of the first side plate 110 and the moving contact 300 may also be used for arranging other components in the circuit breaker, for example, in fig. 5, a heat dissipation member 700 for dissipating heat of the moving contact 300, an action end of the release 800, and the like are arranged in the space, so that the utilization rate of the internal space of the circuit breaker is effectively improved, the overall size of the circuit breaker is reduced, and the miniaturization of the circuit breaker are facilitated.

Optionally, the rotating member 320 includes a connecting portion 323 and a first rotating portion 321 and a second rotating portion 322 which are oppositely disposed; the first rotating part 321 is connected with the second rotating part 322 through a connecting part 323, and the first rotating part 321 and the second rotating part 322 are respectively connected with the first side plate 110 through a rotating shaft 111 in a rotating manner; the operating assembly 200 is in transmission connection with the connecting part 323; the contact 310 is connected to the first rotating portion 321.

For example, in order to further improve the stability of the movable contact 300 during operation, so that the movable contact can be accurately contacted and conducted with the stationary contact 400 during each closing, the rotating member 320 in the movable contact 300, which is responsible for rotating, may have two coaxial rotating points. For example, as shown in fig. 4, the rotation member 320 includes a first rotation portion 321 and a second rotation portion 322, wherein, in order to achieve stable connection therebetween, the first rotation portion 321 may be connected to the second rotation portion 322 through a connection portion 323, and at the same time, the contact 310 is connected to the first rotation portion 321. The first rotating portion 321 and the second rotating portion 322 are both rotatably connected to the first side plate 110, and both are coaxially and rotatably connected to the first side plate 110. In order to improve the stability of the connection, the rotating shaft 111 may also extend to the second side plate 120, so that the first rotating portion 321 and the second rotating portion 322 are both rotatably connected to the first side plate 110 and the second side plate 120. In the present embodiment, the positional relationship between the first rotating portion 321, the second rotating portion 322 and the first side plate 110 is not limited, and for example, as shown in fig. 1, the first rotating portion 321 may be disposed outside the first side plate 110, and the second rotating portion 322 may be disposed between the first side plate 110 and the second side plate 120; the first rotating part 321 and the second rotating part 322 may be disposed between the first side plate 110 and the second side plate 120; one of the first rotating portion 321 and the second rotating portion 322 may be disposed outside the first side plate 110, and the other may be disposed outside the second side plate 120.

Optionally, the second rotating portion 322 is located between the first side plate 110 and the second side plate 120, and the first rotating portion 321 and the contact 310 are located on a side of the first side plate 110 away from the second side plate 120.

For example, as shown in fig. 1, the second rotating portion 322 is disposed at a position between the first side plate 110 and the second side plate 120, and the first rotating portion 321 is disposed outside the first side plate 110. At this time, the movable contact 300 has two rotating supports rotating coaxially to realize stable rotation, and the thickness of the movable contact 300 can be offset by the thickness of the first side plate 110. Meanwhile, the purpose of arranging the first rotating part 321 and the contact element 310 outside the first side plate 110 can be achieved, so that the residual space on the same side of the first side plate 110 and the moving contact 300 is used for arranging other parts in the circuit breaker, the overall volume of the circuit breaker is reduced, and the circuit breaker is miniaturized.

Optionally, the operating assembly 200 comprises an operating member 210 and a transmission assembly; a first end of the operating member 210 is rotatably disposed on the first side plate 110, a second end of the operating member 210 is hinged to a first end of the transmission assembly, and a second end of the transmission assembly is hinged to the movable contact 300.

As shown in fig. 1, 3 and 4, the operating assembly 200 of the circuit breaker may further include an actuating member 210 and a transmission assembly. In order to facilitate the connection of the modular operation structure with the operation handle 212 of the circuit breaker, an operation member 210 may be further disposed at one end of the operation assembly 200, a first end of the operation member 210 is rotatably disposed on the first side plate 110, a second end of the operation member 210 is hinged to the first end of the transmission assembly, and meanwhile, the second end of the transmission assembly is hinged to the movable contact 300. When the external force pushes the operating handle 212 to move, the stroke is transmitted to the transmission component through the rotation of the action member 210, so as to drive the transmission component to push the moving contact 300 to move, and the opening and closing movement of the moving contact 300 is realized.

Optionally, the operating assembly 200 further comprises an elastic member 290; the transmission assembly comprises a first transmission piece and a second transmission piece 270 which is coaxially and rotatably arranged with the movable contact 300; the first end of the first transmission piece is hinged with the second end of the action piece 210; the second end of the first transmission piece is hinged with the first end of the second transmission piece 270; the elastic element 290 has one end abutting against the second transmission element 270 and the other end abutting against the movable contact 300, and is configured to provide a mutually approaching force to the movable contact 300 and the second transmission element 270 so as to abut against the movable contact 300 and the second transmission element 270.

For example, as shown in fig. 4, the transmission assembly may further include a first transmission member and a second transmission member 270, a first end of the first transmission member is hinged to the second end of the operation member 210, a second end of the first transmission member is hinged to the first end of the second transmission member 270, and the second end of the second transmission member 270 and the movable contact 300 are coaxially disposed, so as to form a basic transmission connection. One end of the elastic member 290 abuts against the second transmission member 270, and the other end abuts against the movable contact 300, so that the second transmission member 270 always tends to abut against the movable contact 300 by the acting force of the elastic member 290. Meanwhile, the elastic member 290 can also perform an over travel function on the movable contact 300. For example, as shown in fig. 1, the movable contact 300 and the static contact 400 are in an open state, the driving action component 210 drives the first transmission component and the second transmission component 270 to move, and the second transmission component 270 and the movable contact 300 are abutted together under the action of the elastic component 290, so that when the second transmission component 270 is driven to move, the movable contact 300 moves synchronously and moves toward the static contact 400. When moving contact 300 and static contact 400 contact, because the spacing of static contact 400, lead to the position stop motion of moving contact 300 with the contact of static contact 400, at this moment, action 210 continues the syntropy motion, as shown in fig. 3, drive the butt portion alternate segregation of second driving medium 270 and moving contact 300, in the butt portion alternate segregation's of second driving medium 270 and moving contact 300 in-process, elastic component 290 is compressed gradually, at this moment, its effort of applying to on the moving contact 300 increases, thereby make moving contact 300 can be inseparabler switch on with the contact of static contact 400, the overtravel can make the circuit breaker have more stable conducting capacity. It should be noted that the elastic member 290 may be a torsion spring, a tension spring 280, an elastic sheet, and so on, which are not limited in this application.

Optionally, the operating assembly 200 further comprises a handle 212 and a link 213; the handle 212 is hinged to the third end of the actuator 210 via the link 213.

For example, as shown in fig. 5, in order to facilitate the switching on/off operation of the circuit breaker, a handle 212 and a link 213 may be further provided, wherein one end of the handle 212 is connected to the link 213, and the other end of the link 213 is hinged to the third end of the operating member 210. The handle 212 is driven by external force to move to drive the connecting rod 213 to drive the third end of the action member 210, so as to drive the second end of the action member 210 to move synchronously, thereby realizing subsequent linkage.

In addition, as shown in fig. 3 and 4, the first transmission member may further include a first link 230 hinged to the operating member 210 and a second link 240 hinged to the first link 230, wherein the second link 240 is hinged to the second transmission member 270; the swinging member 250 is rotatably disposed on the first side plate 110, and a clamping member 220 clamped with the swinging member is further disposed below the swinging member. A sliding groove 251 is further provided in the swinging member 250, and the hinge portion of the first link 230 and the second link 240 can slide in the sliding groove 251. Meanwhile, a first torsion spring 211 may be further disposed on the operation member 210 to provide clockwise force thereto. The clip member 220 is further provided with a second torsion spring 221 for providing a restoring force thereto. Meanwhile, in order to increase the opening speed, a tension spring 280 may be further provided on the second transmission member 270. Meanwhile, the first side plate 110 is further provided with a limiting part 260, the rotating angle of the acting part 210 or the first connecting rod 230 can be limited through the limiting part 260, and meanwhile, the swinging part 250 can be limited during brake opening, so that the swinging part 250 and the clamping part 220 are prevented from being separated from clamping during normal brake opening.

The operating principle of the above-described operating assembly 200 is as follows:

initial state (i.e. open state): at this time, the hinge portion of the first link 230 and the second link 240 is located at the leftmost end of the sliding groove 251, the locking member 220 and the swinging member 250 are locked, the tension spring 280 is in an unstressed state, and the movable contact 300 and the fixed contact 400 are disconnected.

In a closing state: referring to fig. 3, the actuating element 210 rotates counterclockwise to drive the first connecting rod 230 to move, so as to drive the hinge portion of the first connecting rod 230 and the second connecting rod 240 to slide from the leftmost end to the right end in the sliding groove 251, and further drive the second connecting rod 240 to move, so as to drive the second transmission element 270 to rotate clockwise around the rotating shaft 111, so that the movable contact 300 also rotates clockwise around the rotating shaft 111 under the action of the elastic element 290, and further the movable contact 300 is in contact communication with the stationary contact 400. When the rotating member 320 continues to rotate, the operating member 210 or the first connecting rod 230 abuts against the limiting portion 260 on the first side plate 110, the hinge portion of the first connecting rod 230 and the second connecting rod 240 slides to the rightmost end of the sliding groove 251, and meanwhile, the second connecting rod 240 continues to drive the second transmission member 270 to rotate clockwise, so that a gap is formed between the protrusion 271 on the second transmission member 270 and abutting against the movable contact 300 and the movable contact 300, thereby realizing over travel.

In a tripping state: when the trip unit 800 receives the trip signal, the trip unit 800 operates, and the trip unit 800 drives the latch 220 to unlock the latch 220 and the swing member 250. At this time, the operating mechanism of the circuit breaker has one more degree of freedom, the whole mechanism is in an unstable state from a stable state, and at this time, under the action of the elastic restoring force of the tension spring 280, the second transmission member 270 rotates counterclockwise, so as to drive the moving contact 300 to rotate counterclockwise to be separated from the static contact 400 for disconnection.

In another aspect of the embodiment of the present invention, a circuit breaker is provided, which includes a housing 900, a fixed contact 400 and any one of the above modular operation structures; the modularized operation structure is disposed on the housing 900, the fixed contact 400 is also disposed on the housing 900, and the fixed contact 400 is disposed corresponding to the movable contact 300 in the modularized operation structure.

For example, as shown in fig. 5, the above-mentioned modular operation structure is disposed on a housing 900 of the circuit breaker, which may be assembled by clamping the first side plate 110 or the second side plate 120 or the first side plate 110 and the second side plate 120 of the modular operation structure with the housing 900. Meanwhile, the static contact 400 is also correspondingly arranged on the housing 900, so that the static contact 400 corresponds to the movable contact 300, and the correspondence here, that is, the finger contact 300 can cooperate with the static contact 400 to complete the respective positions of the two when the operation assembly 200 operates.

Optionally, the circuit breaker further comprises an arc extinguishing device; the arc extinguishing device is disposed corresponding to the moving contact 300 and the stationary contact 400.

For example, in order to improve the opening performance of the circuit breaker, an arc extinguishing device may be further disposed at one side of the movable contact 300 and the stationary contact 400, so that when the movable contact 300 is opened, an arc generated by the arc extinguishing device can be extinguished within a predetermined time.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A modularized operation structure is characterized by comprising a moving contact, an operation assembly, a first side plate and a second side plate, wherein the first side plate and the second side plate are arranged oppositely; the operating assembly is positioned between the first side plate and the second side plate and is respectively and rotatably connected with the first side plate and the second side plate; the moving contact is connected with the first side plate in a rotating mode, is in transmission connection with the operating assembly and is used for driving the moving contact to be close to or far from a static contact matched with the moving contact when the operating assembly acts.

2. The modular operating structure of claim 1, wherein said movable contacts comprise a rotating member and a contact member connected to each other; a rotating shaft is also arranged on the first side plate; the rotating piece is connected with the first side plate in a rotating mode through the rotating shaft, the operating assembly is connected with the rotating piece in a transmission mode, and the contact piece is used for being in contact with or separated from the static contact.

3. The modular operating structure of claim 2 wherein the rotating member and the contact member are each located on a side of the first side plate remote from the second side plate.

4. The modular operating structure of claim 2, wherein the rotating member includes a connecting portion and first and second rotating portions disposed opposite to each other; the first rotating part is connected with the second rotating part through the connecting part, and the first rotating part and the second rotating part are respectively connected with the first side plate through the rotating shaft in a rotating manner; the operating assembly is in transmission connection with the connecting part; the contact is connected to the first rotating portion.

5. The modular operating structure of claim 4, wherein the second rotating portion is located between the first side plate and the second side plate, and the first rotating portion and the contact member are located on a side of the first side plate remote from the second side plate.

6. Modular operating structure as claimed in any one of claims 1 to 5, characterized in that the operating assembly comprises an operating member and a transmission assembly; the first end of the action piece is rotatably arranged on the first side plate, the second end of the action piece is hinged with the first end of the transmission component, and the second end of the transmission component is hinged with the moving contact.

7. The modular operating structure of claim 6, wherein the operating assembly further comprises a resilient member; the transmission assembly comprises a first transmission piece and a second transmission piece which is coaxially and rotatably arranged with the moving contact; the first end of the first transmission piece is hinged with the second end of the action piece; the second end of the first transmission piece is hinged with the first end of the second transmission piece; one end of the elastic element is abutted with the second transmission element, and the other end of the elastic element is abutted with the moving contact, so that acting force which is close to the moving contact and the second transmission element is provided for the moving contact and the second transmission element to be abutted.

8. The modular operating structure of claim 6, wherein the operating assembly further comprises a handle and a linkage; the handle is hinged with the third end of the action piece through the connecting rod.

9. A circuit breaker comprising a housing, a stationary contact and a modular operating structure according to any one of claims 1 to 8; the modularized operation structure is arranged on the shell, the fixed contact is also arranged on the shell, and the fixed contact and the moving contact in the modularized operation structure are correspondingly arranged.

10. The circuit breaker of claim 9, further comprising an arc quenching device; the arc extinguishing device is arranged corresponding to the moving contact and the fixed contact.

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