CN112151336B - Operating mechanism and circuit breaker - Google Patents

Abstract

The invention discloses an operating mechanism and a circuit breaker, and relates to the technical field of piezoelectric devices. The electric operation assembly and the manual operation assembly are respectively connected with the transmission assembly; the electric operation assembly comprises a driving gear, and the transmission assembly comprises a transmission rotating wheel and a rotating piece rotationally connected with the transmission rotating wheel; the driving gear comprises a gear body and a first sector gear which is fixedly arranged on the gear body in a lamination manner, and a second sector gear is correspondingly arranged on the transmission rotating wheel; when the first sector gear and the second sector gear are meshed for transmission, the transmission rotating wheel and the rotating piece rotate from a first position to a second position; the disengaging fastener can be matched with the rotating piece so as to enable the rotating piece to rotate from the second position to the first position; the drive assembly also includes a first resilient member that cooperates with the drive pulley to provide a tendency for the drive pulley to rotate from the second position to the first position. The manual operation and the electric operation can be flexibly exchanged, and the reliability in operation is ensured.

Description

Operating mechanism and circuit breaker

Technical Field

The invention relates to the technical field of piezoelectric devices, in particular to an operating mechanism and a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions, and capable of closing, carrying and opening a current under abnormal circuit conditions (including short circuit conditions) for a prescribed period of time. The circuit breaker can be used for distributing electric energy, the asynchronous motor is not frequently started, the power supply circuit, the motor and the like are protected, and the circuit can be automatically cut off when serious overload or short circuit, undervoltage and other faults occur. And the parts are generally not required to be changed after breaking the fault current, so that the method has wide application at present.

In the prior art, a speed reducing motor is mostly adopted as a driving source for the automatic reclosing electric operating mechanism of the circuit breaker, and the rotary motion of the motor is converted into linear motion through a gear and rack form to drive a handle of the circuit breaker to carry out switching-on and switching-off operation. When manual operation is needed, then the meshing of the gear and the rack is released; when electric operation is needed, namely electric closing is needed, the gear and the rack are meshed again. The electric operating mechanism with the structure has the phenomenon that the gear and the rack are not meshed in place in the actual working (using) process, in particular in the electric closing process, and the normal switching of manual control and electric control is affected.

Disclosure of Invention

The invention aims to provide an operating mechanism and a circuit breaker, which can flexibly exchange manual operation and electric operation and ensure the reliability during operation.

Embodiments of the present invention are implemented as follows:

In one aspect of the embodiment of the application, an operating mechanism is provided, which comprises an electric operating component, a manual operating component, a rotatable disengaging fastener and a transmission component, wherein the electric operating component and the manual operating component are respectively connected with the transmission component; the electric operation assembly comprises a driving gear, and the transmission assembly comprises a transmission rotating wheel and a rotating piece rotationally connected with the transmission rotating wheel; the driving gear comprises a gear body and a first sector gear which is fixedly arranged on the gear body in a lamination manner, and a second sector gear is correspondingly arranged on the transmission rotating wheel; when the first sector gear is meshed with the second sector gear for transmission, the transmission rotating wheel and the rotating piece rotate from a first position to a second position; the disengaging piece can be matched with the rotating piece so as to enable the rotating piece to rotate from the second position to the first position; the drive assembly also includes a first resilient member engaged with the drive pulley to bias the drive pulley to rotate from the second position to the first position.

Optionally, still be provided with the arch on the gear body, the arch is located the eccentric position of gear body just keeps away from one side of first sector gear, the release includes rotates the body, and sets up first support arm and the second support arm on the rotation body, wherein, first support arm can with protruding support is held, the second support arm can with rotate the piece support and hold.

Optionally, the transmission assembly further includes a locking piece, a first boss is disposed on a side surface of the transmission rotating wheel, the locking piece is located on one side of the transmission rotating wheel where the first boss is disposed, and the locking piece is connected with the rotating piece and is clamped with the first boss.

Optionally, the first elastic component is the torsional spring, the torsional spring include the torsional spring body, and respectively with first torsion arm and the second torsion arm of torsional spring body coupling, the transmission runner deviates from be provided with first location axle and second boss on the side of first boss, the torsional spring body cover is established on the first location axle, first torsion arm with second boss joint, second torsion arm and casing joint.

Optionally, the transmission assembly further includes a second elastic member that cooperates with the latch member, so that the latch member has an elastic force that is engaged with the first boss.

Optionally, the second elastic component is the torsional spring, the torsional spring includes the elastic body, and respectively with the first joint arm and the second joint arm of elastic body coupling, be provided with the second locating shaft on the rotating member, the elastic body cover is established on the second locating shaft, first joint arm with latch member joint, the second joint arm with the casing joint.

Optionally, the operating mechanism further comprises a first connecting rod, a first positioning hole is formed in the rotating piece, a second positioning hole is correspondingly formed in the locking piece, one end of the first connecting rod penetrates through the first positioning hole and the second positioning hole, and the other end of the first connecting rod is used for being connected with the moving contact assembly.

Optionally, the electric operation assembly further comprises a motor and a gear assembly connected with the motor, wherein the gear assembly is meshed with the gear body; the manual operation assembly comprises a handle and a second connecting rod, one end of the second connecting rod is connected with the handle, and the other end of the second connecting rod is connected with the rotating piece.

Optionally, a limiting table is arranged on the shell, and the limiting table is used for limiting the transmission rotating wheel when rotating to the first position and limiting the rotating piece when rotating to the second position.

In another aspect of the embodiment of the application, a circuit breaker is provided, which comprises a moving contact assembly, a fixed contact and the operating mechanism as described in any one of the above, wherein the operating mechanism is connected with the moving contact assembly through a first connecting rod.

The beneficial effects of the embodiment of the invention include:

According to the operating mechanism and the circuit breaker, the electric operating assembly and the manual operating assembly are respectively connected with the transmission assembly, and the action of the transmission assembly can be controlled through the electric operating assembly and the manual operating assembly respectively, so that the required opening or closing operation can be realized through the action of the transmission assembly. When the electric switch-on device is controlled by the electric operation assembly, the first sector gear is fixedly arranged through the gear body and the lamination of the gear body, so that the first sector gear is meshed with the second sector gear which is correspondingly arranged on the transmission rotating wheel, the transmission assembly is driven to act, and the transmission rotating wheel and the rotating piece are rotated from the first position of the switch-off to the second position of the switch-on, so that the electric switch-on is realized. Through rotatable tripping member, under the drive of drive gear, can cooperate with the rotating member, make the rotating member rotate to the first position of separating brake from the second position of closing a floodgate to realize electronic separating brake. When the manual operation assembly is used for controlling, the first sector gear can be disengaged from the second sector gear, and the rotation of the rotating piece is directly controlled by the manual operation assembly, so that the required opening or closing can be realized. Through the first elastic component of transmission runner complex, can make transmission runner self return to the first position when separating brake when first sector gear and second sector gear release the meshing state to the electric operation subassembly passes through first sector gear and meshes with the second sector gear again, realizes required electric switching-on operation. By adopting the mode, the manual operation and the electric operation can be flexibly exchanged, and the reliability in operation is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an operating mechanism according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of an operating mechanism according to an embodiment of the present invention;

FIG. 3 is a third schematic structural view of an operating mechanism according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a driving gear driving wheel according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a structure of a driving wheel and a locking member according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a structure of a driving wheel and a first elastic member according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a rotating member according to an embodiment of the present invention;

FIG. 8 is a second schematic structural view of a rotating member according to an embodiment of the present invention;

Fig. 9 is a schematic structural view of a locking element according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of an operating mechanism according to an embodiment of the present invention.

Icon: 100-an operating mechanism; 105-a housing; 1052-a limit table; 110-an electrically operated component; 112-a drive gear; 1122-a gear body; 1124-first sector gear; 1126-protrusions; 114-an electric motor; 115-a gear assembly; 120-a manually operated assembly; 122-handle; 124-a second link; 130-release fastener; 132-a first arm; 134-a second arm; 140-a transmission assembly; 142-a drive wheel; 1422-a second sector gear; 1424-first boss; 1426-a first positioning shaft; 1428-second boss; 144-rotating member; 1442-a second positioning shaft; 1444-a first positioning hole; 1445-connecting slots; 1446-a first clamping table; 1448-a second clamping table; 145-a first elastic member; 147-catch piece; 1472-a second locating hole; 1474-a clamping boss; 1476-limit table top; 149-a second elastic member; 150-a first link; 160-moving contact assembly.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention 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 invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, the present embodiment provides an operating mechanism 100, which includes an electric operating assembly 110, a manual operating assembly 120, a rotatable trip 130 and a transmission assembly 140, wherein the electric operating assembly 110 and the manual operating assembly 120 are respectively connected with the transmission assembly 140; the electric operation assembly 110 comprises a driving gear 112, and the transmission assembly 140 comprises a transmission rotating wheel 142 and a rotating member 144 rotationally connected with the transmission rotating wheel 142; the driving gear 112 includes a gear body 1122, a first sector gear 1124 stacked and fixed with the gear body 1122, and a second sector gear 1422 correspondingly disposed on the driving wheel 142; when the first sector gear 1124 is engaged with the second sector gear 1422 for transmission, the transmission wheel 142 and the rotating member 144 rotate from the first position to the second position; the disengaging member 130 can cooperate with the rotating member 144 to rotate the rotating member 144 from the second position to the first position; the drive assembly 140 further includes a first resilient member 145 that cooperates with the drive pulley 142 to provide a tendency for the drive pulley 142 to rotate from the second position to the first position.

Specifically, the driving wheel 142 and the rotating member 144 can synchronously rotate, and the driving wheel 142 and the rotating member 144 can also relatively rotate, when the electric operation assembly 110 is used for controlling the driving gear 112 to rotate, since the driving gear 112 comprises a gear body 1122 and a first sector gear 1124 fixedly stacked with the gear body 1122, the first sector gear 1124 can be meshed with the second sector gear 1422, and at this moment, when the first sector gear 1124 drives the second sector gear 1422 to rotate, the driving wheel 142 synchronously rotates and the rotating member 144 is also driven to synchronously rotate, so as to realize the required electric closing operation. When the electric brake is required to be opened, the driving gear 112 drives the trip 130 to rotate, at this time, the first sector gear 1124 and the second sector gear 1422 are not meshed, the trip rod rotates the rotating member 144 to rotate, and drives the transmission rotating wheel 142 to rotate synchronously, so as to realize the required electric brake opening.

When the electric operation assembly 110 fails or is abnormally powered off, the manual operation assembly 120 can perform opening or closing operations. At this time, the transmission wheel 142 and the rotating member 144 can be relatively rotated regardless of whether the first sector gear 1124 and the second sector gear 1422 are in mesh. When the transmission rotating wheel 142 is not in action, the rotating member 144 is controlled by the manual operation assembly 120 to rotate from the first position to the second position or from the second position to the first position, so as to realize the required opening or closing operation.

The first position is specifically a position form of the transmission assembly 140 when the brake is opened, and the second position is specifically a position form of the transmission assembly 140 when the brake is closed. And realizing the required switching-on or switching-off operation in the switching process of the first position and the second position. Through the first elastic member 145 engaged with the transmission rotating wheel 142, when the first sector gear 1124 and the second sector gear 1422 are in a non-engaged state, the transmission rotating wheel 142 can be automatically returned to the first position when the brake is separated, so that the engagement between the electric operating assembly 110 and the transmission assembly 140 is facilitated, and the stability of the operating mechanism 100 during working is improved.

According to the operating mechanism 100 and the circuit breaker provided by the embodiment of the application, the electric operation assembly 110 and the manual operation assembly 120 are respectively connected with the transmission assembly 140, so that the action of the transmission assembly 140 can be controlled through the electric operation assembly 110 and the manual operation assembly 120 respectively, and the required opening or closing operation can be realized through the action of the transmission assembly 140. When the electric control unit 110 is used for controlling, the gear body 1122 and the first sector gear 1124 fixedly stacked on the gear body 1122 enable the first sector gear 1124 to be meshed with the second sector gear 1422 correspondingly arranged on the transmission rotating wheel 142, so that the transmission assembly 140 is driven to act, and the transmission rotating wheel 142 and the rotating member 144 are rotated from a first brake-opening position to a second brake-closing position, so that electric brake-closing is achieved. Through the rotatable tripping part 130, under the drive of the driving gear 112, the rotating part 144 can be matched with the tripping part, so that the rotating part 144 rotates from a second switching-on position to a first switching-off position, and the electric switching-off is realized. When controlled by the manual operation assembly 120, the first sector gear 1124 can be disengaged from the second sector gear 1422, and the rotation of the rotating member 144 can be directly controlled by the manual operation assembly 120 to achieve the desired opening or closing. By the first elastic member 145 engaged with the transmission wheel 142, when the first sector gear 1124 and the second sector gear 1422 are disengaged, the transmission wheel 142 can be automatically returned to the first position when the brake is released, so that the electric operation assembly 110 is meshed with the second sector gear 1422 again through the first sector gear 1124, and the required electric brake closing operation is realized. By adopting the mode, the manual operation and the electric operation can be flexibly exchanged, and the reliability in operation is ensured.

As shown in fig. 2, 3 and 4, the gear body 1122 is further provided with a protrusion 1126, the protrusion 1126 is located at an eccentric position of the gear body 1122 and is located at a side far from the first sector gear 1124, the trip member 130 includes a rotating body, and a first support arm 132 and a second support arm 134 disposed on the rotating body, wherein the first support arm 132 can abut against the protrusion 1126, and the second support arm 134 can abut against the rotating member 144.

Specifically, when the closing operation is completed, the rotating member 144 is located in the position shown in fig. 3, at this time, when the closing operation needs to be performed by the electric operation assembly 110, the driving gear 112 is controlled to continue to rotate in the same direction until the protrusion 1126 provided on the gear body 1122 abuts against the first support arm 132, meanwhile, the first sector gear 1124 and the second sector gear 1422 are in a separated state, when the driving gear 112 continuously rotates, the gear body 1122 synchronously rotates, the protrusion 1126 has a poking force on the first support arm 132, so that the disengaging member 130 is forced to rotate, and when the disengaging member 130 is forced to rotate, the second support arm 134 abuts against the rotating member 144 and pushes the rotating member 144 to rotate in the opposite direction (the state shown in fig. 2), until the rotating member 144 rotates to the first position, and the opening operation is completed. As the gear body 1122 rotates, the boss no longer abuts the first arm 132, and the second arm 134 no longer abuts the rotating member 144.

As shown in fig. 1 and 5, the transmission assembly 140 further includes a locking member 147, a first boss 1424 is disposed on a side surface of the transmission rotating wheel 142, the locking member 147 is located on one side of the transmission rotating wheel 142 where the first boss 1424 is disposed, and the locking member 147 is connected to the rotating member 144 and is in clamping connection with the first boss 1424.

Specifically, by connecting the locking member 147 with the rotating member 144, when the manual operation assembly 120 is opened or closed, the locking member 147 and the first boss 1424 can be released from the locking relationship, so as to realize the relative rotation between the rotating member 144 and the transmission rotating wheel 142. Thus, the opening or closing operation by the manual operation unit 120 can be realized without being affected by the electric operation unit 110.

As shown in fig. 6, the drive pulley 142 has a tendency to rotate from the second position to the first position by the first resilient member 145 engaging the drive pulley 142. The first elastic member 145 is a torsion spring, the torsion spring includes a torsion spring body, and a first torsion arm and a second torsion arm connected with the torsion spring body respectively, a first positioning shaft 1426 and a second boss 1428 are disposed on a side surface of the transmission rotating wheel 142, which faces away from the first boss 1424, the torsion spring body is sleeved on the first positioning shaft 1426, the first torsion arm is clamped with the second boss 1428, and the second torsion arm is clamped with the housing.

Specifically, the first positioning shaft 1426 arranged on one side surface, deviating from the first boss 1424, of the transmission rotating wheel 142 can limit the torsion spring body, so that the torsion spring body is prevented from being subjected to position deviation when being stressed, and the stability of the torsion spring during use is improved. The second torsion arm is engaged with the housing 105 by engaging the first torsion arm with the second boss 1428. When the transmission rotating wheel 142 rotates from the first position to the second position, the torsion spring body is stressed to deform, and in the process that the transmission rotating wheel 142 rotates from the second position to the first position, the torsion spring body has elastic force for recovering elastic deformation, so that the transmission rotating wheel 142 can be better pushed to return to the first position. In this way, re-engagement of the first gear segment 1124 with the second gear segment 1422 is facilitated. The second torsion arm can be directly clamped with the shell, or can be clamped with the shell through a fixing piece on the shell, and the embodiment of the application is not particularly limited.

As shown in fig. 5, the transmission assembly 140 further includes a second elastic member 149 that cooperates with the locking member 147, so that the locking member 147 has an elastic force that engages with the first boss 1424.

Specifically, the rotating member 144 is rotationally connected with the driving wheel 142, the locking member 147 is rotationally connected with the rotating member 144, and when the locking member 147 is clamped with the first boss 1424, the positions of the locking member 147 and the first boss 1424 are relatively fixed, and then the positions among the locking member 147, the rotating member 144 and the driving wheel 142 are relatively fixed. When the electric operation assembly 110 drives the transmission rotating wheel 142 to rotate, the rotating member 144 is made to rotate synchronously, so as to realize the required closing operation. When the manual operation assembly 120 is used for controlling the opening or closing, the locking piece 147 is released from being clamped with the first boss 1424, so that the rotating piece 144 can also rotate to realize the manual opening or closing operation when the power transmission rotating wheel is fixed.

As shown in fig. 5 and 7, the second elastic member 149 is a torsion spring, and the torsion spring includes an elastic body, and a first clamping arm and a second clamping arm connected to the elastic body respectively, a second positioning shaft 1442 is disposed on the rotating member 144, the elastic body is sleeved on the second positioning shaft 1442, and the first clamping arm is clamped to the locking member 147, and the second clamping arm is clamped to the housing 105.

Specifically, through the first location axle 1426 that sets up on the driving medium, can carry out spacingly to the elastic body, avoid the elastic body to take place the position offset when the atress, be favorable to promoting the stability when the torsional spring uses. The first clamping arm is clamped with the locking piece 147, and the second clamping arm is clamped with the housing 105. When the locking piece 147 is released from the clamping connection with the first boss 1424 by the acting force of the manual operation assembly 120, the elastic body is stressed to deform, and when the manual operation assembly 120 no longer exerts force on the locking piece 147, the elastic body has elastic force for recovering the elastic deformation, so that the locking piece 147 and the first boss 1424 are clamped again.

As shown in fig. 3, 8 and 9, the operating mechanism 100 further includes a first connecting rod 150, a first positioning hole 1444 is provided on the rotating member 144, a second positioning hole 1472 is correspondingly provided on the locking member 147, one end of the first connecting rod 150 is disposed in the first positioning hole 1444 and the second positioning hole 1472 in a penetrating manner, and the other end of the first connecting rod 150 is used for being connected with the moving contact assembly 160.

Thus, the locking member 147 and the rotating member 144 can rotate relatively, and the rotating member 144 moves to drive the locking member 147. The catch piece 147 receives the effort of manual operation subassembly 120, the effort of second elastic component 149 and the effort of first connecting rod 150 for rotate in step when electronic closing operation between rotating member 144 and the transmission runner 142, rotate relatively during electronic separating brake operation and manual operation, be favorable to promoting the ease of control, and then promote user experience.

One end of the first link 150 is inserted into the first positioning hole 1444 and the second positioning hole 1472, the other end of the first link 150 is connected to the moving contact assembly 160, and when the rotating member 144 is switched between the first position and the second position, the first link 150 is driven to operate, so that the moving contact assembly 160 is operated through the first link 150. Meanwhile, the rotating member 144 is further provided with a first clamping table surface 1446, so that the rotating member 144 is matched with the first connecting rod 150 in a clamping manner when in the first position, and the stability of connection is ensured.

As shown in fig. 1 and 3, the electric operation assembly 110 further includes a motor 114, and a gear assembly 115 connected to the motor 114, the gear assembly 115 being engaged with the gear body 1122; the manual operation assembly 120 includes a handle 122 and a second link having one end connected to the handle 122 and the other end connected to the rotator 144.

Specifically, the motor 114 of the electric operating assembly 110 rotates according to the received control command, and when rotating, the gear assembly 115 drives the gear body 1122 to rotate, so that the first sector gear 1124 disposed on the gear body 1122 is matched with the transmission rotating wheel 142 to realize the required closing operation. In the brake release process, the motor 114 is controlled to continuously rotate in the same direction, so that the protrusion 1126 on the gear body 1122 is matched with the release member 130, and the release member 130 pushes the rotating member 144 to rotate to the brake release position, so that the required brake release operation is realized.

When manual operation is needed, the second connecting rod 124 is driven to act through the handle 122, and as one end of the second connecting rod 124 is connected with the handle 122, the other end is connected with the rotating member 144, during closing operation, the rotating member 144 is pushed to rotate from the first position to the second position, the rotating member 144 rotates, in the process, the locking piece 147 is driven to rotate together, and the transmission rotating wheel 142 is fixed under the action of the first elastic member 145, so that manual closing is realized. As shown in fig. 5, 8 and 9, in the event of an electric fault, the rotating member 144 may be pushed to rotate by the second link, and one end of the second link connected to the rotating member 144 moves in the connection slot 1445, so that the second link abuts against the limiting table 1476 of the locking member 147, and the locking member 147 moves with the first boss 1424, thereby releasing the locking relationship, and further realizing the relative rotation between the driving wheel 142 and the rotating member 144, so as to realize the required manual closing or opening operation through the rotating member 144.

Similarly, in the manual brake release process, when the rotating member 144 is pulled to rotate by the second connecting rod 124, the second connecting rod 124 is connected with the rotating member 144 and the locking member 147, so that the rotating member 144 and the locking member synchronously rotate, and the relative rotation of the transmission rotating wheel 142 and the rotating member 144 is realized, so that the required brake release operation is realized by the rotating member 144, and at the same time of completing the brake release operation, the locking member 147 is locked with the first boss 1424 again under the action of the second elastic member 149 due to the locking of the first locking arm of the second elastic member 149 with the locking boss 1474 of the locking member 147. Facilitating the desired opening or closing operation by the electrically operated assembly 110.

As shown in fig. 10, the housing 105 is provided with a limiting table 1052, where the limiting table 1052 is used for limiting the rotation of the transmission wheel 142 to the first position and limiting the rotation of the rotating member 144 to the second position.

Specifically, when the closing is completed, the transmission runner 142 automatically returns to the first position under the action of the first elastic member 145, and in order to ensure the return position accuracy, a limiting table 1052 is arranged on the housing 105 to limit the rotation position of the transmission runner 142, so that the position accuracy during electric control is ensured, and the stability and reliability during electric control are improved. In the closing process, the first connecting rod 150 passes through the elastic dead point, so that the rotating member 144 has a continuous rotating trend, the rotating member 144 rotates to the second position to realize closing, when closing is completed, the second clamping table 1448 abuts against the limiting table 1052, the rotating angle of the rotating member 144 can be limited, and the stability of mutual matching of all components in closing is guaranteed.

The embodiment of the invention also discloses a circuit breaker, which comprises a moving contact assembly 160, a fixed contact and the operating mechanism 100 in the previous embodiment, wherein the operating mechanism 100 is connected with the moving contact assembly 160 through a first connecting rod 150. The circuit breaker includes the same structure and advantages as the operating mechanism 100 in the previous embodiment. The structure and the advantages of the operating mechanism 100 are described in detail in the foregoing embodiments, and are not described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The operating mechanism is characterized by comprising an electric operating assembly, a manual operating assembly, a rotatable disengaging fastener and a transmission assembly, wherein the electric operating assembly and the manual operating assembly are respectively connected with the transmission assembly; the electric operation assembly comprises a driving gear, and the transmission assembly comprises a transmission rotating wheel and a rotating piece rotationally connected with the transmission rotating wheel; the driving gear comprises a gear body and a first sector gear which is fixedly arranged on the gear body in a lamination manner, and a second sector gear is correspondingly arranged on the transmission rotating wheel; when the first sector gear is meshed with the second sector gear for transmission, the transmission rotating wheel and the rotating piece rotate from a first position to a second position; the disengaging piece can be matched with the rotating piece so as to enable the rotating piece to rotate from the second position to the first position; the drive assembly further includes a first resilient member engaged with the drive wheel to bias the drive wheel to rotate from the second position to the first position;

The gear body is also provided with a bulge, the bulge is positioned at the eccentric position of the gear body and is far away from one side of the first sector gear, the tripping piece comprises a rotating body, and a first support arm and a second support arm which are arranged on the rotating body, wherein the first support arm can be propped against the bulge, and the second support arm can be propped against the rotating piece;

The transmission assembly further comprises a locking piece, a first boss is arranged on one side face of the transmission rotating wheel, the locking piece is located on one side, provided with the first boss, of the transmission rotating wheel, and the locking piece is connected with the rotating piece and is clamped with the first boss;

The first elastic piece is a torsion spring, the torsion spring comprises a torsion spring body, a first torsion arm and a second torsion arm which are respectively connected with the torsion spring body, a first positioning shaft and a second boss are arranged on one side surface of the transmission rotating wheel, which is away from the first boss, the torsion spring body is sleeved on the first positioning shaft, the first torsion arm is clamped with the second boss, and the second torsion arm is clamped with the shell;

The transmission assembly further comprises a second elastic piece matched with the locking piece, so that the locking piece has elastic force clamped with the first boss;

The shell is provided with a limiting table, and the limiting table is used for limiting the transmission rotating wheel when rotating to the first position and limiting the rotating piece when rotating to the second position.

2. The operating mechanism of claim 1, wherein the second elastic member is a torsion spring, the torsion spring includes an elastic body, and a first clamping arm and a second clamping arm respectively connected with the elastic body, a second positioning shaft is arranged on the rotating member, the elastic body is sleeved on the second positioning shaft, the first clamping arm is clamped with the locking member, and the second clamping arm is clamped with the housing.

3. The operating mechanism according to claim 1 or 2, further comprising a first connecting rod, wherein a first positioning hole is formed in the rotating member, a second positioning hole is correspondingly formed in the locking member, one end of the first connecting rod is arranged in the first positioning hole and the second positioning hole in a penetrating manner, and the other end of the first connecting rod is used for being connected with the moving contact assembly.

4. The operating mechanism of claim 1 or 2, wherein the electrically operated assembly further comprises a motor, and a gear assembly connected to the motor, the gear assembly being in mesh with the gear body; the manual operation assembly comprises a handle and a second connecting rod, one end of the second connecting rod is connected with the handle, and the other end of the second connecting rod is connected with the rotating piece.

5. A circuit breaker comprising a moving contact assembly and a stationary contact, and an operating mechanism according to any one of claims 1-4, said operating mechanism being connected to said moving contact assembly by a first link.