CN210575787U - Operating system of circuit breaker and circuit breaker - Google Patents

Abstract

The utility model provides an operating system and circuit breaker of circuit breaker relates to electrical equipment technical field, include: the fixed rotating shaft is positioned between the first rotating shaft and the second rotating shaft and is not collinear with the first rotating shaft and the second rotating shaft; the first rotating shaft is rotationally connected with the operating mechanism, the second rotating shaft is rotationally connected with the moving contact, and the fixed rotating shaft and the moving contact are coaxially and rotationally connected with the shell; the static contact and the moving contact are arranged correspondingly; the operating mechanism is located at one end of the housing. When the operating mechanism is operated from one end of the shell to the other end (the first direction), the movable contact is required to deflect in the second direction (the first direction is intersected with the second direction) through the driving of the rotating part. After the arc spout from the first direction on the arc, it can not with rack direct contact, avoided traditional circuit breaker promptly to spout the arc and mouthful set up when just facing the position with the rack, the problem of easy emergence breakdown. Effectively improving the breaking capacity and the service life of the equipment.

Description

Operating system of circuit breaker and circuit breaker

Technical Field

The utility model relates to an electrical equipment technical field particularly, relates to an operating system and circuit breaker of circuit breaker.

Background

With the progress of science and technology, the living standard of people is rapidly improved, and the safety of household electricity utilization is required to be higher. The small-sized circuit breaker can be installed on a terminal distribution line because of small size. Meanwhile, the circuit can be connected, carried and disconnected under the condition of normal or abnormal circuit, and the circuit and the electrical equipment are effectively protected.

The internal structure of the existing miniature circuit breaker is arranged in a rectangular shell, an operating mechanism is positioned at one end of the rectangular shell, the moving direction of the operating mechanism for controlling the on-off is along the length direction of the rectangular shell, and because the moving direction of a movable contact part and the moving direction of the operating mechanism are the same, in order to simultaneously satisfy the corresponding relation between a movable contact and a fixed contact and an arc spraying opening, the arc spraying opening can only be arranged in the height direction of the rectangular shell (namely the side surface of the rectangular shell where the arc spraying opening is positioned is adjacent to the end surface of the operating mechanism).

However, in actual arc extinction, the arc spraying opening is opposite to the cabinet, so that the arc is sprayed onto the cabinet through the arc spraying opening, and breakdown is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough among the above-mentioned prior art, provide a circuit breaker operating system and circuit breaker to it is just right with the rack to solve current arc spout, easily takes place the problem of puncturing.

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

the utility model discloses an aspect provides an operating system of circuit breaker sets up in the casing of circuit breaker, include: the operating mechanism, the rotating part, the moving contact and the static contact are positioned in the shell; the rotating part comprises a bracket, a first rotating shaft, a fixed rotating shaft and a second rotating shaft are arranged on the bracket, and the fixed rotating shaft is positioned between the first rotating shaft and the second rotating shaft and is not collinear with the first rotating shaft and the second rotating shaft; the first rotating shaft is rotationally connected with the operating mechanism, the second rotating shaft is rotationally connected with the moving contact, and the fixed rotating shaft and the moving contact are coaxially and rotationally connected with the shell; the static contact and the moving contact are arranged correspondingly; the operating mechanism is located at one end of the housing.

Optionally, the operating system of the circuit breaker further comprises a torsional elastic member; the movable contact is provided with a butting part which is positioned between the fixed rotating shaft and the second rotating shaft; the torsion elastic piece is sleeved on the periphery of the fixed rotating shaft, and one end of the torsion elastic piece is abutted against the shell, and the other end of the torsion elastic piece is abutted against the abutting part.

Optionally, a through hole is further formed in the movable contact, and when the fixed rotating shaft penetrates through the through hole and is rotatably connected with the shell so that the movable contact is abutted to the fixed contact, the through hole and the fixed rotating shaft slide relatively.

Optionally, the operating mechanism comprises an operating assembly and a locking assembly; the operating assembly is rotationally connected with the lock catch assembly, and the lock catch assembly is rotationally connected with the first rotating shaft; when the locking component is in a locking state, the locking component is used for keeping the movable contact and the static contact in abutting joint; and when the locking assembly is in an unlocking state, the locking assembly is used for disconnecting the movable contact from the static contact.

Optionally, the locking assembly includes a first connecting piece rotationally connected to the operating assembly, a second connecting piece rotationally connected to the first rotating shaft, and a locking piece; the first connecting piece is rotationally connected with the end part of the second connecting piece, a locking shaft rotationally connected with the second connecting piece is arranged on the locking piece, a clamping part is arranged on the locking shaft, and a clamping groove matched with the clamping part is arranged on the first connecting piece; the clamping part is clamped with the clamping groove to enable the movable contact to be kept in abutting joint with the static contact; the clamping part is separated from the clamping groove so as to disconnect the movable contact from the static contact.

Optionally, the operating assembly comprises a V-shaped rod and an operating end located at the end of the housing; the operating end is rotationally connected with the first end of the V-shaped rod, the second end of the V-shaped rod is rotationally connected with the shell, and the third end of the V-shaped rod is rotationally connected with the lock catch assembly.

Optionally, the bracket includes a connecting plate and side plates disposed oppositely; the both ends and the curb plate fixed connection of connecting plate, first pivot, fixed rotating shaft and second pivot pass the curb plate of relative setting respectively.

Optionally, the moving contact comprises a moving contact body arranged corresponding to the fixed contact and an action plate arranged oppositely; the two sides of the moving contact body are provided with action plates, arc-shaped holes are respectively formed in the action plates which are arranged oppositely, and the support is located between the action plates which are arranged oppositely.

Optionally, the first rotating shaft, the fixed rotating shaft and the second rotating shaft are arranged in parallel.

The embodiment of the utility model provides an on the other hand provides a circuit breaker, including the operating system of the circuit breaker of casing and any kind of above-mentioned, the operating system of circuit breaker sets up inside the casing. The shell is also provided with an arc spraying port which is positioned at the other end of the shell opposite to the operating mechanism.

The beneficial effects of the utility model include:

the utility model provides an operating system of circuit breaker sets up it in the casing of circuit breaker, wherein, rotate the piece and include the support, be provided with first pivot, fixed rotating shaft and second pivot on the support, the support rotates through first pivot and operating device to be connected, rotates through the second pivot and moves the contact and is connected, fixed rotating shaft then with moving contact and the coaxial rotation of casing be connected to form and control a rotation by operating device and rotate, drive moving contact rotation control circuit's break-make then. When the operating mechanism is located at one end of the housing, in order to enable the arc spraying port to form a corresponding relationship with the fixed contact and the movable contact after being located at the other end of the housing (opposite to one end of the housing) (the arc generated between the fixed contact and the movable contact can be sprayed out through the arc spraying port), when the operating mechanism is operated from one end of the housing to the other end (in a first direction), because the fixed rotating shaft on the bracket is positioned between the first rotating shaft and the second rotating shaft and is not collinear with the first rotating shaft and the second rotating shaft, the second rotating shaft drives the moving contact to rotate by taking the fixed rotating shaft as a rotating center while the operating mechanism drives the first rotating shaft to move by taking the fixed rotating shaft as the rotating center, namely, the movable contact deflects in the second direction (the first direction is crossed with the second direction) to be contacted or disconnected with the corresponding fixed contact, therefore, the moving contact and the static contact form a corresponding relation with an arc spraying port arranged at the other end of the shell in the disconnection process. After the arc spout from the first direction on the arc, it can not with rack direct contact, avoided traditional circuit breaker promptly to spout the arc and mouthful set up when just facing the position with the rack, the problem of easy emergence breakdown. Effectively improving the breaking capacity and the service life of the equipment.

The utility model also provides a circuit breaker, be applied to the circuit breaker with the operating system of foretell circuit breaker, set up it inside the casing simultaneously, can be so that the first direction of setting up the position of spout arc mouth for the circuit breaker, avoid its setting in one side adjacent with the operating system terminal surface, just right with the rack, lead to taking place circuit fault such as puncture. Effectively improve the breaking capacity of the circuit breaker.

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 an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 4 is a fourth schematic structural diagram of an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 5 is a fifth schematic structural diagram of an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a rotating member in an operating system of a circuit breaker according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a moving contact in an operating system of a circuit breaker according to an embodiment of the present invention.

Icon: 100-a housing; 101-a limiting plate; 102-a liquid magnetic release; 200-an operating mechanism; 201-operating components; 2011-first end; 2012-a second end; 2013-a third end; 2014-a fourth end; 202-a latch assembly; 2021-a first connector; 2022-a retaining groove; 2023-a second connector; 2024-a second stop; 2025-locking member; 2026-locking shaft; 2027-a snap-fit portion; 2028-a first stop; 300-a rotating member; 301-a first spindle; 302-a second shaft; 303-fixing the rotating shaft; 304-a torsional spring; 305-a connection plate; 306-side panels; 400-moving contact; 401-an abutment; 402-a via; 403-moving contact body; 404-action plate; 500-static contact; 600-spraying an arc opening; 700-an operation end; 701-a wiring terminal; 702-patch board.

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.

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.

When current circuit breaker is placing in the rack, for the operation of being convenient for, it is corresponding (openly operation) with the one end that its was provided with operating device and the side of opening the door of the cabinet body usually, and the surplus side that is adjacent with this terminal surface all is corresponding with the inner wall of the cabinet body promptly, and this moment, owing to spout the arc mouth setting in a side (the last side of keeping away from ground usually) that is adjacent with this terminal surface for spout the arc mouth corresponding with the rack, when electric arc spout the arc mouth blowout promptly, easily make the rack take place to puncture the trouble. Even if the existing circuit breaker is used for preventing breakdown, a distance is arranged between the arc spraying opening and the cabinet, and the breakdown fault still cannot be solved. Meanwhile, the cabinet body can be influenced, and the volume of the cabinet body is further increased. The present application provides an operating system for a circuit breaker based on the above-mentioned drawbacks.

The utility model discloses an aspect, refer to fig. 1, provide an operating system of circuit breaker, set up in the casing 100 of circuit breaker, include: the operating mechanism 200, the rotating member 300, the moving contact 400 and the fixed contact 500 are positioned inside the housing 100; the rotating member 300 comprises a bracket, a first rotating shaft 301, a fixed rotating shaft 303 and a second rotating shaft 302 are arranged on the bracket, and the fixed rotating shaft 303 is positioned between the first rotating shaft 301 and the second rotating shaft 302 and is not collinear with the first rotating shaft 301 and the second rotating shaft 302; the first rotating shaft 301 is rotationally connected with the operating mechanism 200, the second rotating shaft 302 is rotationally connected with the movable contact 400, and the fixed rotating shaft 303 and the movable contact 400 are coaxially and rotationally connected with the shell 100; the fixed contact 500 is arranged corresponding to the movable contact 400; the operating mechanism 200 is located at one end of the housing 100.

For example, as shown in fig. 1, the housing 100 of the circuit breaker is approximately rectangular, the operating mechanism 200 is disposed near the left end surface, and in order to prevent the arc from breaking down with the cabinet through the arc spraying port 600, the arc spraying port 600 is disposed on the right end surface of the housing 100 so as to prevent the arc from corresponding to the inner wall of the cabinet surrounding four sides of the housing 100. When the arc spraying port 600 is disposed on the right end surface of the housing 100, in order to satisfy the corresponding positional relationship between the movable contact 400 and the stationary contact 500, that is, when the movable contact 400 is far from the stationary contact 500 when the load is disconnected, the arc generated between the movable contact 400 and the stationary contact 500 can be sprayed out through the arc spraying port 600 disposed on the right end surface (the opening radian of the movable contact 400 relative to the stationary contact 500 corresponds to the arc spraying port 600).

The other end of the operating mechanism 200, which is far from the operating end 700, is connected with a rotating member 300, and the rotating member 300 includes a bracket, and a first rotating shaft 301, a fixed rotating shaft 303 and a second rotating shaft 302 which are arranged on the bracket, so that the other end of the operating mechanism 200 is rotatably connected with the first rotating shaft 301, the second rotating shaft 302 is rotatably connected with the movable contact 400, and meanwhile, the bracket and the movable contact 400 are coaxially and rotatably connected with the housing 100 through the fixed rotating shaft 303 on the bracket. Because the operation end 700 of the operation mechanism 200 is opposite to the position of the arc spraying opening 600, and based on the condition that the moving contact 500 and the static contact 500 need to correspond to the arc spraying opening 600, when the operation mechanism 200 performs a left-to-right operation on the moving contact 400, the left-to-right movement needs to be converted into a bottom-to-top movement through the rotating member 300, so that the fixed rotating shaft 303 is located between the first rotating shaft 301 and the second rotating shaft 302 (with reference to the horizontal direction in fig. 1), and the fixed rotating shaft 303 is not collinear with the first rotating shaft 301 and the second rotating shaft 302, that is, in fig. 1, in a disconnected state, the horizontal position of the fixed rotating shaft 303 is higher than the horizontal positions of the first rotating shaft 301 and the second rotating shaft 302. Because the arc spraying opening 600 is arranged on the end surface on the right side, the shell 100 of the circuit breaker can be in direct contact with the cabinet, so that the layout of the cabinet body is more reasonable, and the volume of the cabinet body is effectively reduced.

In practical operation, when the circuit breaker needs to be switched on, as shown in fig. 2, the operating mechanism 200 moves from left to right, so as to drive the first rotating shaft 301 on the bracket to rotate counterclockwise around the fixed rotating shaft 303, and then drive the second rotating shaft 302 to rotate counterclockwise around the fixed rotating shaft 303, because the end of the movable contact 400 away from the contact is rotatably connected to the fixed rotating shaft 303 and the second rotating shaft 302, the movable contact will follow the second rotating shaft 302 on the bracket to perform coaxial movement in a direction close to the fixed contact 500 around the fixed rotating shaft 303, i.e., the movement of the operating mechanism 200 from left to right is converted into a movement from bottom to top through the cooperation of the rotating member 300 and the movable contact 400, thereby realizing the contact between the movable contact and the fixed contact 500, i.e., switching on. Referring to fig. 3 and 4, when the circuit breaker is required to disconnect a load circuit, the operating mechanism 200 moves from right to left, and drives the first rotating shaft 301 on the bracket to rotate clockwise around the fixed rotating shaft 303 as a center, so as to drive the movable contact 400 to move in a direction away from the fixed contact 500, and at this time, in a process of keeping away, an electric arc is generated between positions where the two contacts are in contact (i.e., corresponding protrusions formed on the movable contact 400 and the fixed contact 500 in fig. 1), and since an opening radian of the movable contact 400 corresponds to a position of the arc spraying port 600, at this time, the electric arc can be sprayed out through the position of the arc spraying port 600 (as shown in fig. 1, an arc extinguishing chamber can also be arranged between the movable contact 500 and the arc spraying port 600, and the electric arc. When being favorable to the arc extinguishing more, improve the breaking capacity who is applied to this operating system's circuit breaker, guaranteed the stability of the cabinet body of using this circuit breaker when using.

First, the housing 100 of the circuit breaker may also be in various forms such as an approximately square, a trapezoid, etc., and this embodiment is only exemplified by an approximately rectangular parallelepiped for illustrative purposes.

Secondly, in fig. 1, the arc spraying opening 600 is disposed at a midpoint position along the height direction, and may also be disposed at a position close to the static contact 500 or a position far from the static contact 500, which is not specifically limited in this application, as long as it is opposite to the operating mechanism 200 and is located on the end surface of the housing 100. In addition, the size of the shape of the arc spraying opening 600 can be reasonably set according to actual use requirements, and the arc spraying opening is not limited too much in the application.

Optionally, the operating system of the circuit breaker further comprises a torsional spring 304; the movable contact 400 is provided with an abutting part 401, and the abutting part 401 is positioned between the fixed rotating shaft 303 and the second rotating shaft 302; the torsion elastic element 304 is sleeved on the periphery of the fixed rotating shaft 303, and one end of the torsion elastic element abuts against the housing 100 and the other end abuts against the abutting portion 401.

Illustratively, a torsional elastic element 304 may be further included in the operating system of the circuit breaker, for example, at the position of the dashed line in fig. 1, an abutting portion 401 is provided on the movable contact 400 (the abutting portion 401 may be an abutting shaft in fig. 1, or may be a low-contact protrusion, etc.), and to ensure that no interference occurs, the abutting portion 401 may be provided between a hole for connecting the movable contact 400 with the fixed rotating shaft 303 and a hole for connecting with the second rotating shaft 302. The torsion elastic member 304 is disposed around the fixed shaft 303, and has one end abutting against the upper end of the side clamp plate in the housing 100 and the other end abutting against the upper end of the abutting portion 401. As shown in fig. 1, when the circuit breaker is kept in an open state, the torsional elastic element 304 may be in a non-deformation state, and when the circuit breaker is switched on, the second rotating shaft 302 drives the moving contact 400 to move counterclockwise, so that the deformation occurs gradually, and thus, when the circuit breaker breaks a load circuit, an auxiliary acting force is provided for the movement of the moving contact 400, the speed of the moving contact 400 when the moving contact 400 is broken is increased, the arcing time is shortened, the breaking difficulty is reduced, and the service life of the contact is prolonged.

Optionally, a through hole 402 is further disposed on the movable contact 400, and when the fixed rotating shaft 303 penetrates through the through hole 402 to be rotationally connected with the housing 100 so as to enable the movable contact 400 to abut against the fixed contact 500, the through hole 402 and the fixed rotating shaft 303 slide relatively.

For example, as shown in fig. 4, a through hole 402 is further disposed on the moving contact 400, the fixed rotating shaft 303 penetrates through the through hole 402 on the moving contact 400 to be rotatably connected with the housing 100, and meanwhile, when the moving contact 400 and the fixed contact 500 are in an abutting state (i.e., when the moving contact 400 is in contact with the fixed contact 500), the moving contact 400 continues to move, so that the through hole 402 slides relative to the fixed rotating shaft 303, thereby implementing an over-travel action and forming a closer contact relationship between the moving contact 400 and the fixed contact 500.

In addition, the through hole 402 may be an elliptical hole, an arc hole or a kidney-shaped hole, as long as it can enable the fixed rotating shaft 303 to slide relative to the through hole 402 to achieve the over travel action in the process of enabling the moving contact 400 to continue to rotate when the moving contact 400 and the static contact 500 are in the abutting state. For convenience of description, the arc-shaped holes will be schematically described below.

When the operating mechanism 200 is continuously moved along the direction from left to right in fig. 2 by an external force, at this time, because the contact portion of the moving contact 400 and the contact portion of the static contact 500 form a butting relationship, and based on the condition that the fixed rotating shaft 303 is fixedly connected with the housing 100, the second rotating shaft 302 continuously drives one end of the moving contact 400, which is away from the contact (i.e., the end provided with the through hole 402 in fig. 1), to move upward, and the arc-shaped hole slides relative to the fixed rotating shaft 303 (the radian of the arc-shaped hole may be reasonably set by using the second rotating shaft 302 as a circle center), i.e., the fixed rotating shaft 303 in fig. 2 changes from the upper end of the arc-shaped hole to the lower end of the arc-shaped hole (relative change), so that the moving contact 400 continuously moves upward. Because still the cover is equipped with torsion elastic component 304 on fixed pivot 303, and refer to fig. 4, torsion elastic component 304 butts respectively on casing 100 and butt portion 401, in the overtravel in-process, butt portion 401 still can the upward movement, thereby make torsion elastic component 304's deformation degree further increase, after the overtravel action, because rotation piece 300 position state keeps fixed, torsion elastic component 304 forms reverse effort to butt portion 401, make the one end in the arc hole of moving contact 400 have the trend of using second pivot 302 as center anticlockwise rotation, thereby further improvement moving contact 400 and the degree of compactness of static contact 500 contact, guarantee the stability that the electric current switched on.

Optionally, the operating mechanism 200 includes an operating assembly 201 and a latch assembly 202; the operating assembly 201 is rotationally connected with the locking assembly 202, and the locking assembly 202 is rotationally connected with the first rotating shaft 301; when the latch assembly 202 is in the locked state, the latch assembly is used for keeping the movable contact 400 and the static contact 500 in abutting connection; the latch assembly 202 is in the unlocked state for disconnecting the moving contact 400 from the stationary contact 500.

Illustratively, as shown in fig. 2, the operating mechanism 200 includes an operating assembly 201 and a locking assembly 202, wherein the operating assembly 201 is close to one end (the end opposite to the end where the arc spraying opening 600 is disposed) of the casing 100, the locking assembly 202 is disposed between the operating assembly 201 and the rotating member 300, and one end of the locking assembly 202 is rotatably connected with the operating assembly 201, and the other end is rotatably connected with the first rotating shaft 301 of the rotating member 300. After the operation assembly 201 controls the movable contact 400 to contact the stationary contact 500 (when there is the torsion elastic member 304, after the over travel action is finished), the locking assembly 202 enters a locking state, so that the state of the rotating member 300 remains unchanged, and the movable contact 400 connected to the rotating member 300 also remains in close contact with the stationary contact 500. Therefore, the stability of the long-term reliable contact conduction of the moving contact and the static contact 500 can be further improved. Certainly, when the circuit breaker needs to be disconnected, the locking assembly 202 can be in an unlocked state, so that the movable contact 400 is relatively far away from the fixed contact 500 by using the reaction force or the external force of the torsion elastic member 304, and the disconnection capability of the circuit breaker is further improved.

Optionally, the locking assembly 202 includes a first connecting member 2021 rotatably connected to the operating assembly 201, a second connecting member 2023 rotatably connected to the first rotating shaft 301, and a locking member 2025; the first connecting piece 2021 is rotatably connected with the end of the second connecting piece 2023, a locking shaft 2026 rotatably connected with the second connecting piece 2023 is arranged on the locking piece 2025, a clamping part 2027 is arranged on the locking shaft 2026, and a clamping groove 2022 matched with the clamping part 2027 is arranged on the first connecting piece 2021; the clamping portion 2027 is clamped with the clamping groove 2022 to keep the movable contact 400 in abutment with the stationary contact 500; the catching portion 2027 is disengaged from the catching groove 2022 to disconnect the moving contact 400 from the stationary contact 500.

Illustratively, as shown in fig. 5, one end (i.e., the lower left end) of the first connector 2021 near the operating assembly 201 is rotatably connected to the third end 2013 of the V-shaped rod in the operating assembly 201, and the first connector 2021 is also rotatably connected to the second connector 2023 (i.e., the lower end). A catching groove 2022 is formed at the other end (i.e., the upper right end) of the first connecting member 2021 near the second connecting member 2023, and one end (the lower right end) of the second connecting member 2023 near the rotating member 300 is rotatably connected to the first rotating shaft 301. A through hole is formed at the top end of the second connecting member 2023, a locking shaft 2026 fixedly disposed on the locking member 2025 passes through the through hole to be rotatably connected with the second connecting member 2023, and a clamping portion 2027 is disposed on the locking shaft 2026, that is, in fig. 5, a shaft body of the remaining portion of the locking shaft 2026 after being grooved is formed, and the extending direction of the grooved may be perpendicular to the axial direction of the locking shaft 2026. (the dotted line in fig. 5 represents the position where the rotating shaft is disposed).

In practical operation, a reset member (such as a spring or a torsion spring) may be disposed on the locking member 2025, and the locking member 2025 is driven to rotate by the reset member, so that the groove is gradually screwed out of the retaining groove 2022, i.e. the remaining part of the shaft body enters the retaining groove 2022 and forms an abutting relationship with the retaining groove 2022. At this time, the operation end 700 applies a force from left to right to the first connection element 2021, since the clamping portion 2027 and the clamping groove 2022 form a clamping action, and the first connection element 2021 and the second connection element 2023 are rotationally connected, at this time, the force from left to right will continue to be transmitted to the rotating element 300 on the right side, and then the contacting and conducting or the overtravel between the moving contact 400 and the static contact 500 is completed, and after the contacting and conducting is completed, the third end 2013 of the V-shaped rod should be located in the upper semicircle centering on the second end 2012. At this time, since the movable contact 400 and the rotating member 300 exert a reaction force from right to left, when the first connecting member 2021 and the third end 2013 of the V-shaped rod are applied, the V-shaped rod is driven to continue to rotate counterclockwise, but the operation end 700 is already located at the maximum stroke end (i.e., the fourth end 2014 of the V-shaped rod abuts against the limiting plate 101 on the housing 100, so as to prevent over-operation). Therefore, when the locking member 2025 (i.e., the locking assembly 202) is in the locked state, the static and moving contacts 500 can be kept continuously conducted. When an external force (which may be a force applied by the liquid-magnetic release 102 in fig. 3) rotates the locking member 2025, the groove on the locking shaft 2026 enters the retaining groove 2022, at this time, the two grooves are opposite, that is, the clamping portion 2027 is separated from the retaining groove 2022, the first connecting member 2021 and the second connecting member 2023 can rotate relatively, and at this time, the movable contact 400 and the rotating member 300 cannot be kept in a conductive state, thereby completing disconnection.

The locking member 2025 may further include a first position-limiting portion 2028, the second connecting member 2023 may further include a second position-limiting portion 2024, and when the connector is mounted, the first position-limiting portion 2028 is located between the second position-limiting portion 2024 and the body of the second connecting member 2023. After the locking member 2025 rotates, the engaging portion 2027 engages with the engaging groove 2022, and the first position-limiting portion 2028 abuts against the second position-limiting portion 2024. When the connector is unlocked, the locking member 2025 is rotated to separate the engaging portion 2027 from the engaging groove 2022, and at this time, the corresponding first position-limiting portion 2028 should rotate toward a direction away from the second position-limiting portion 2024, and after the first position-limiting portion 2028 abuts against the second connector 2023 body, the engaging portion 2027 should be completely separated from the engaging groove 2022.

In addition, the locking assembly 202 may also be formed by an action part and a matching part, wherein one end of the action part is connected with the operation assembly 201, and the other end is rotatably connected with the first rotating shaft 301 of the rotating member 300. The fitting portion is fixedly provided with the housing 100. The engaging portion includes an end portion slidably connected to a fixing member fixed to the housing 100 and an extensible member capable of extending and retracting in a direction toward the actuating portion relative to the fixing member. The telescopic end of the telescopic piece is provided with a pawl, and the action part is provided with one-way teeth at the position close to the telescopic end. As shown in fig. 1, when the operating unit 201 moves rightward, the actuating portion is driven to move rightward, and after the closing operation is completed, the one-way tooth and the pawl form a contact in the left-right direction, that is, the locking unit 202 enters the locked state. When the unlocking is needed, the telescopic piece is pulled to enable the pawl to be far away from the one-way tooth, and then the unlocking state can be achieved.

Optionally, the operating assembly 201 comprises a V-shaped rod and an operating end 700 at the end of the housing 100; the handle end 700 is pivotally connected to the first end 2011 of the V-shaped lever, the second end 2012 of the V-shaped lever is pivotally connected to the housing 100, and the third end 2013 of the V-shaped lever is pivotally connected to the latch assembly 202.

Illustratively, as shown in fig. 2, the operating assembly 201 further includes a V-shaped rod and an operating end 700, the operating end 700 is located at the left end of fig. 1, so that the latch assembly 202 can form a stable locked state and an unlocked state, the operating end 700 and a first end 2011 of the V-shaped rod can be rotatably connected, and at the same time, a second end 2012 of the V-shaped rod is rotatably connected with the housing 100, and a third end 2013 is rotatably connected with the latch assembly 202. Since the second end 2012 is fixedly connected to the housing 100, the movement pattern of the latch assembly 202 is defined to facilitate the locking or unlocking thereof.

Optionally, the bracket includes a connecting plate 305 and an oppositely disposed side plate 306; the two ends of the connecting plate 305 are fixedly connected with the side plates 306, and the first rotating shaft 301, the fixed rotating shaft 303 and the second rotating shaft 302 respectively penetrate through the side plates 306 which are oppositely arranged.

For example, as shown in fig. 6, the bracket includes a connecting plate 305 and a side plate 306, and when two ends of the first rotating shaft 301, the fixed rotating shaft 303 and the second rotating shaft 302 are respectively connected to the movable contact 400, the housing 100 or the operating mechanism 200 through the side plates 306, the rotation of the rotating member 300 can be more stable and smooth, and the strength and stability of the entire operating system can be improved. It should be noted that, in order to make the structure of the operating system more compact and avoid the interference between the abutting portion 401 and the rotating member 300, grooves may be further provided on the two opposite side plates 306 for accommodating the corresponding abutting portion 401, which may be an abutting protrusion or an abutting shaft.

Optionally, the movable contact 400 includes a movable contact body 403 arranged corresponding to the fixed contact 500 and an action plate 404 arranged opposite to the movable contact body; the two sides of the moving contact body 403 are provided with action plates 404, arc-shaped holes are respectively formed in the action plates 404 which are arranged oppositely, and the support is located between the action plates 404 which are arranged oppositely.

For example, as shown in fig. 7, in order to enable the movable contact 400 to have better strength and stability when moving, the movable contact may be structurally configured as a movable contact body 403 and two opposite action plates 404 disposed on two sides of the movable contact body 403, and the two action plates 404 are both provided with arc-shaped holes, so as to form a stable connection with the fixed rotating shaft 303, and to enable the rotation to be smoother and more stable. The bracket is arranged between the two action plates 404, and the two action plates 404 can be limited by the bracket, so that large movement deviation along the front-back direction (relative to the left-right direction in fig. 1) is prevented. Meanwhile, the casing 100 may further include a limiting plate 101 disposed oppositely, and the limiting plate 101 is fixedly connected to the inner wall of the casing 100, and the fixed rotating shaft 303 is rotatably connected to the inner wall. The moving contact 400 is arranged on the outer side of the rotating part 300 in a sleeved mode, the limiting plate 101 is arranged on the two outer sides of the moving contact 400 in a sleeved mode, therefore, the moving contact 400 and the rotating part 300 are limited in the front-back direction in a rotating mode, the action accuracy is improved, meanwhile, the operating mechanism 200 can be effectively isolated from other elements in the circuit breaker, and action interference is avoided.

Alternatively, the first rotating shaft 301, the fixed rotating shaft 303, and the second rotating shaft 302 are disposed parallel to each other.

For example, as shown in fig. 1, the first rotating shaft 301, the fixed rotating shaft 303, and the second rotating shaft 302 may be disposed in parallel with each other in the axial direction, so that smoothness of the operation is further improved when the rotating shaft rotates.

The embodiment of the utility model provides a further aspect provides a circuit breaker, including casing 100 and the operating system of the above-mentioned arbitrary circuit breaker, the operating system of circuit breaker sets up inside casing 100, still is provided with on casing 100 and spouts arc mouth 600, spouts arc mouth 600 and is located the casing 100 other end relative with operating device 200.

For example, as shown in fig. 1, the circuit breaker operating system in the above embodiment is disposed in a housing 100 of the circuit breaker, and may further include a release, so as to form a complete circuit breaker structure, so that during actual operation, a fault that is easily punctured with a cabinet is effectively avoided, and meanwhile, a structure that the circuit breaker and the cabinet are matched is more compact. The arc extinguishing performance and the breaking capacity of the arc extinguishing device are improved. In addition, a terminal 701 and a patch board 702 may be provided inside the housing 100.

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. An operating system of a circuit breaker disposed within a housing of the circuit breaker, comprising: the operating mechanism, the rotating part, the moving contact and the static contact are positioned in the shell; the rotating part comprises a support, a first rotating shaft, a fixed rotating shaft and a second rotating shaft are arranged on the support, and the fixed rotating shaft is positioned between the first rotating shaft and the second rotating shaft and is not collinear with the first rotating shaft and the second rotating shaft;

the first rotating shaft is rotationally connected with the operating mechanism, the second rotating shaft is rotationally connected with the moving contact, and the fixed rotating shaft and the moving contact are coaxially and rotationally connected with the shell; the static contact is arranged corresponding to the moving contact; the operating mechanism is located at one end of the housing.

2. The circuit breaker operating system of claim 1, further comprising a torsional spring; the movable contact is provided with an abutting part which is positioned between the fixed rotating shaft and the second rotating shaft; the torsion elastic piece is sleeved on the periphery of the fixed rotating shaft, and one end of the torsion elastic piece is abutted against the shell, and the other end of the torsion elastic piece is abutted against the abutting part.

3. The operating system of circuit breaker as claimed in claim 2, wherein a through hole is further provided on the moving contact, and the fixed shaft passes through the through hole and is rotatably connected to the housing, so that when the moving contact abuts against the fixed contact, the through hole and the fixed shaft slide relatively.

4. The circuit breaker operating system of any of claims 1 to 3, wherein the operating mechanism includes an operating assembly and a latch assembly;

the operating assembly is rotationally connected with the lock catch assembly, and the lock catch assembly is rotationally connected with the first rotating shaft; when the locking component is in a locking state, the moving contact and the static contact are kept in abutting joint; and the lock catch assembly is used for disconnecting the moving contact and the static contact when in an unlocking state.

5. The circuit breaker operating system of claim 4, wherein the latch assembly includes a first link rotatably coupled to the operating assembly, a second link rotatably coupled to the first shaft, and a latch; the first connecting piece is rotatably connected with the end part of the second connecting piece, a locking shaft which is rotatably connected with the second connecting piece is arranged on the locking piece, a clamping part is arranged on the locking shaft, and a clamping groove which is matched with the clamping part is arranged on the first connecting piece; the clamping part is clamped with the clamping groove to enable the moving contact to be abutted against the static contact; the clamping part is separated from the clamping groove so as to disconnect the moving contact from the static contact.

6. The circuit breaker operating system of claim 4, wherein the operating assembly includes a V-shaped lever and an operating end at an end of the housing; the operating end is rotatably connected with the first end of the V-shaped rod, the second end of the V-shaped rod is rotatably connected with the shell, and the third end of the V-shaped rod is rotatably connected with the locking assembly.

7. The circuit breaker operating system of claim 1, wherein the bracket includes a connecting plate and oppositely disposed side plates; the two ends of the connecting plate are fixedly connected with the side plates, and the first rotating shaft, the fixed rotating shaft and the second rotating shaft respectively penetrate through the side plates which are oppositely arranged.

8. The operating system of a circuit breaker according to claim 3, wherein the movable contact includes a movable contact body disposed corresponding to the stationary contact and an action plate disposed opposite to the movable contact body, and the through hole is an arc-shaped hole; the moving contact is characterized in that the action plates are arranged on two sides of the moving contact body, the arc-shaped holes are formed in the oppositely arranged action plates respectively, and the support is located between the oppositely arranged action plates.

9. The operating system of a circuit breaker according to claim 1, wherein the first rotating shaft, the fixed rotating shaft and the second rotating shaft are disposed in parallel with each other.

10. A circuit breaker, comprising a housing and an operating system of the circuit breaker according to any one of claims 1 to 9, wherein the operating system of the circuit breaker is disposed inside the housing, and an arc spraying opening is further disposed on the housing, and the arc spraying opening is located at the other end of the housing opposite to the operating mechanism.

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