CN218039073U - Separating brake mechanism of circuit breaker and circuit breaker - Google Patents

Abstract

The embodiment of the application provides a separating brake mechanism and circuit breaker of circuit breaker, this separating brake mechanism includes: motor, gear drive, rolling disc and operating device. The gear transmission mechanism comprises a multistage gear assembly which is meshed in sequence, a first fitting piece is arranged on the gear transmission mechanism, and a second fitting piece is arranged on the rotating disc. The motor is used for driving the gear transmission mechanism to rotate step by step, and the first fitting piece and the second fitting piece are matched to drive the rotating disc to rotate. The rotating disc drives the operating mechanism to rotate, and the operating mechanism drives the moving contact to be far away from the fixed contact to realize brake opening. This application embodiment can directly drive the rolling disc through gear drive and rotate for the separating brake speed is faster.

Description

Separating brake mechanism of circuit breaker and circuit breaker

Technical Field

The embodiment of the application relates to the field of circuit breakers, in particular to a switching-off mechanism of a circuit breaker and the circuit breaker.

Background

The circuit breaker is a switching device capable of opening, closing, carrying, and breaking a current under a normal circuit condition, and closing, carrying, and breaking a current under an abnormal circuit condition within a prescribed time.

The prior art plug-in circuit breaker is mainly opened by manual control, but with the development of the internet of things technology, the prior plug-in circuit breaker cannot meet the requirements of remote monitoring and control, and therefore, a circuit breaker capable of automatically opening is needed to be provided.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present application provide an opening mechanism of a circuit breaker and a circuit breaker, which overcome the above problems or at least partially solve the above problems that it is difficult to meet the requirements of remote monitoring and control and it is difficult to achieve automatic and rapid opening of a circuit breaker.

The embodiment of the application provides a separating brake mechanism of circuit breaker, includes: motor, gear drive, rolling disc and operating device. The gear transmission mechanism comprises a multistage gear assembly which is meshed in sequence, a first fitting piece is arranged on the gear transmission mechanism, and a second fitting piece is arranged on the rotating disc. The motor is used for driving the gear transmission mechanism to rotate step by step, and the first fitting piece and the second fitting piece are matched to drive the rotating disc to rotate. The rotating disc drives the operating mechanism to rotate, and the operating mechanism drives the moving contact to be far away from the fixed contact to realize brake opening.

In this application embodiment, through first fitting piece and the cooperation of second fitting piece, gear drive can directly drive the rolling disc and rotate. The rotating disc drives the operating mechanism to rotate, and the operating mechanism drives the moving contact to be far away from the static contact, so that the brake can be quickly switched off.

In an alternative form, the second mating member is a projecting shank and the first mating member is a trip projection. The rotation tracks of the first mating member and the second mating member intersect, so that the first mating member and the second mating member are matched within an intersection range.

The rotation tracks of the first matching piece and the second matching piece are intersected, so that the second matching piece is pushed to rotate after the first matching piece rotates. And then, the rotating disc drives the operating mechanism to rotate, and the operating mechanism drives the moving contact to be far away from the static contact, so that brake opening is realized.

In an alternative mode, the first mating member has an arc surface, and the first mating member pushes against the second mating member through the arc surface to drive the rotating disc to rotate.

The arc surface is arranged on the first fitting piece, so that the fitting degree of the first fitting piece and the second fitting piece is higher. The first fitting piece can more firmly support and push the second fitting piece, and the reliability of the brake separating process is improved.

In an alternative form, the first mating member is configured as a gear segment and the second mating member is configured as a gear segment that meshes with the first mating member.

By configuring the first fitting piece and the second fitting piece into the sector gear, the degree of matching of the first fitting piece and the second fitting piece can be improved, and the reliability of the brake separating process is improved.

In an alternative mode, the multistage gear assembly comprises four-stage gear assemblies which are meshed in sequence, namely a first gear piece, a second gear piece, a third gear piece and a fourth gear piece, and the transmission ratio of the meshed two-stage gear pieces is greater than 1.

The multi-stage gear assembly can provide the required transmission torque when the breaker is opened. Setting the transmission ratio of the engaged two-stage gear member to be greater than 1 can make the load force output by the motor smaller.

In an alternative form, the second and third gear members each comprise coaxially arranged bull and pinion gears. The first gear piece is meshed with a large gear of the second gear piece, a small gear of the second gear piece is meshed with a large gear of the third gear piece, and a small gear of the third gear piece is meshed with the fourth gear piece.

The second gear part and the third gear part are arranged to comprise a large gear and a small gear which are coaxially arranged, when the multistage gear assembly rotates, the small gear of the previous stage can drive the large gear of the next stage to rotate, and the transmission ratio of the two stages of gear parts which are meshed with each other is larger than 1.

In a second aspect of the embodiments of the present application, a circuit breaker is provided, where the circuit breaker includes a PCB and the opening mechanism of the circuit breaker provided in the first aspect of the embodiments of the present application, the PCB is electrically connected to a motor in the opening mechanism of the circuit breaker, and the PCB is used for supplying power to the motor.

Through PCB to the motor power supply, in the circuit breaker, the motor need not additionally be connected with the power through the wire for the internal integration of circuit breaker is higher, and the power supply of motor is more stable.

In an optional mode, the circuit breaker further comprises a switching-off detection part, the switching-off detection part is used for sending a first switching-off detection signal when the switching-off of the circuit breaker is detected, and the remote control module controls the motor to stop rotating according to the first switching-off detection signal.

Through setting up the separating brake detection piece, can judge whether moving contact and static contact according to the voltage condition in the separating brake detection piece. Furthermore, the rotation condition of the motor is controlled, and the possibility of misoperation of the circuit breaker provided by the embodiment of the application is reduced.

In an optional mode, the circuit breaker further comprises a transmission part, the transmission part is connected with a rotating disc in a switching-off mechanism of the circuit breaker, the PCB comprises a switching-off microswitch, the switching-off microswitch is arranged at a first position below the transmission part, and a contact part is arranged on the transmission part. The opening microswitch is used for sending a second opening detection signal when the contact element rotates to the first position and contacts with the opening microswitch, and the remote control module controls the motor to stop rotating according to the second opening detection signal.

After the opening, the contact part is contacted with an opening microswitch arranged on the PCB at the first position, so that whether the breaker is in an opening state can be detected, and the rotation condition of the motor is further controlled. The remote control module controls the motor to stop rotating according to the first brake-off detection signal and/or the second brake-off detection signal, and therefore the accuracy of brake-off state detection can be improved.

In an alternative form, the circuit breaker further includes a handle. The transmission part is connected with the handle through the handle connecting rod, and the transmission part drives the handle to rotate to the brake separating position through the handle connecting rod.

The transmission part is connected with the handle through the handle connecting rod, so that the automatic brake separating and the manual brake separating have a shared structure, and the space can be saved. In addition, when the rotating disc rotates, the driving part can be driven to rotate. The driving medium rotates, can drive the handle through the handle connecting rod and rotate, and convenient to use person observes the circuit breaker and whether is in the separating brake state.

In an alternative mode, the circuit breaker provided by the embodiment of the application is a plug-in circuit breaker.

The plug-in circuit breaker provided by the embodiment of the application has the advantages of small volume and compact layout, and can quickly realize the opening process.

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

Drawings

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

Fig. 1 is a schematic diagram of an opening mechanism of a circuit breaker according to an embodiment of the present disclosure before opening.

Fig. 2 is a schematic diagram of an opening mechanism of a circuit breaker according to an embodiment of the present application.

Fig. 3 is a schematic view of a brake separating detection element according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of a circuit breaker including an opening microswitch and before opening.

Fig. 5 is a schematic diagram of a circuit breaker including an opening microswitch and being after opening.

Description of reference numerals:

01. a motor; 021. a first gear member; 022. a second gear member; 023. a third gear member; 024. a fourth gear member; 03. rotating the disc; 031. a second mating member; 04. an operating mechanism; 05. a first mating member; 051. a circular arc surface; 06. a moving contact; 07. static contact; 08. a first linkage; 09. a PCB; 101. a conductive member; 102. a spring; 103. fixing a column; 11. a static arc ignition angle; 12. a transmission member; 13. a second linkage; 14. a switch-off microswitch; 15. a contact member; 16. a handle; 17. a handle link.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the drawings are intended to cover, but not to exclude, other elements. The word "a" or "an" does not exclude a plurality.

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

The directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the opening mechanism of the circuit breaker and the circuit breaker of the present application. For example, in the description of the present application, the terms "upper", "lower", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

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

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

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

Some embodiments of the present application provide a tripping mechanism of a circuit breaker and a circuit breaker, please refer to fig. 1 and fig. 2. Fig. 1 is a schematic view of an opening mechanism of a circuit breaker provided in an embodiment of the present application before opening, and fig. 2 is a schematic view of an opening mechanism of a circuit breaker provided in an embodiment of the present application.

As shown in fig. 1 and fig. 2, an opening mechanism of a circuit breaker according to an embodiment of the present application includes: motor 01, gear drive, rolling disc 03 and operating device 04, gear drive includes the multistage gear assembly who meshes in proper order.

The gear transmission mechanism is provided with a first fitting piece 05, the rotating disc 03 is provided with a second fitting piece 031, and the first fitting piece 05 and the second fitting piece 031 are matched in shape. The motor 01 is used for driving the gear transmission mechanism to rotate step by step, and the first fitting piece 05 and the second fitting piece 031 are matched to drive the rotating disc 03 to rotate. The rotating disc 03 drives the operating mechanism 04 to rotate, and the operating mechanism 04 drives the moving contact 06 to be far away from the static contact 07 to realize opening.

The multistage gear assembly may include a plurality of gear members engaged in sequence for transmitting the load force output from the motor 01 to the operating mechanism 04 in stages. In a possible manner, as shown in fig. 1 and fig. 2, considering the space limitation inside the circuit breaker and the transmission torque required during the closing process of the driving operation mechanism 04, in this embodiment, the multistage gear assembly is configured as a four-stage gear assembly that sequentially meshes with the first gear 021, the second gear 022, the third gear 023 and the fourth gear 024, respectively, for example, the first engaging element 05 can be disposed on the fourth gear 024, and the transmission ratio of the meshing two-stage gear is greater than 1, so that the load force output by the motor 01 is smaller.

In practical applications, in order to realize a transmission ratio of two engaged gear members larger than 1, the second gear member 022 and the third gear member 023 both comprise a gearwheel and a pinion coaxially arranged, the first gear member 021 is engaged with the gearwheel of the second gear member 022, the pinion of the second gear member 022 is engaged with the gearwheel of the third gear member 023, and the pinion of the third gear member 023 is engaged with the fourth gear member 024.

The second gear 022 and the third gear 023 are arranged to include a gear wheel and a pinion which are coaxially arranged, and when the multistage gear assembly rotates, the motor 01 outputs a smaller load force to drive the gear wheel of the second gear 022 to rotate. The small gear of the second gear member 022 continues to rotate with a small force to drive the large gear of the third gear member 023 to rotate. The rotation of the pinion gear of the third gear member 023 causes the rotation of the fourth gear member 024 again with a small force. Therefore, the pinion of the previous stage is used for multiple times to drive the bull gear of the next stage to rotate, the transmission torque required in the brake separating process can be met, the layout between the gear pieces is compact, and the purpose of saving space can be achieved.

In this embodiment, the gear transmission mechanism can directly drive the rotating disc 03 to rotate through the cooperation of the first fitting piece 05 and the second fitting piece 031. The rotating disc 03 drives the operating mechanism 04 to rotate, and the operating mechanism 04 drives the moving contact 06 to be far away from the static contact 07, so that the requirements of remote monitoring and control can be met, and the brake can be quickly opened.

In one embodiment, as shown in fig. 1 and 2, the second fitting member 031 may be a protruding handle and the first fitting member 05 may be a trip projection. The rotation trajectories of the first engagement piece 05 and the second engagement piece 031 intersect and thereby engage within the intersection range.

The rotation tracks of the first fitting part 05 and the second fitting part 031 intersect, so that the second fitting part 031 is pushed to rotate after the first fitting part 05 rotates. And then, the rotating disc 03 drives the operating mechanism 04 to rotate, and the operating mechanism 04 drives the moving contact 06 to be far away from the static contact 07, so that the brake is switched off.

In order to improve the degree of cooperation of first fitting piece 05 and second fitting piece 031, refer to fig. 2, first fitting piece 05 can have arc surface 051, and first fitting piece 05 supports through arc surface 051 and pushes away second fitting piece 031, drives rolling disc 03 and rotates.

Set up arc surface 051 on first fitting piece 05, first fitting piece 05 can be more firm support push away second fitting piece 031, improved the reliability of separating brake process.

In one embodiment, the first fitting member 05 may be configured as a gear segment, and the second fitting member 031 may be configured as a gear segment engaged with the first fitting member 05.

It can be seen that, by configuring the first fitting part 05 and the second fitting part 031 as sector gears, the degree of fitting of the first fitting part 05 and the second fitting part 031 can be increased, and the reliability of the opening process can be improved.

In practical applications, the rotating disk 03 and the operating element 04 may be connected by a first linkage 08.

The rotating disk 03 and the operating mechanism 04 may be connected by a first link 08, and a first through hole may be provided in the rotating disk 03 and a second through hole may be provided in the operating mechanism 04. A first end of the first link means 08 is movably connected to the rotary disc 03 through a first through hole. The second end of the first linkage 08 is movably or fixedly connected to the operating member 04 via a second through-hole. The first link device 08 may be formed by combining a plurality of links.

In one embodiment, the present application further provides a Circuit breaker, and referring to fig. 1, the Circuit breaker may include a Printed Circuit Board (PCB) 09 and the opening mechanism of the Circuit breaker provided in the above embodiments. The PCB09 is electrically connected with the motor 01 in the opening mechanism of the circuit breaker, and the PCB09 is used for supplying power to the motor 01. Like this, motor 01 need not additionally be connected with the power through the wire for the internal integration of circuit breaker is higher, and motor 01's power supply is more stable.

In the process of automatic opening of the circuit breaker, the moving contact 06 and the static contact 07 are bonded, and the moving contact 06 and the static contact 07 are in failure and cannot be opened. At this time, if the motor 01 is continuously controlled to rotate for automatic opening, the circuit breaker provided by the embodiment of the present application may be damaged.

Based on this, in an embodiment, the circuit breaker may further include an opening detection component, and referring to fig. 3, fig. 3 is a schematic diagram of the opening detection component provided in this embodiment of the present application. The opening detection piece is used for sending a first opening detection signal when detecting the opening of the breaker, and the remote control module controls the motor 01 to stop rotating according to the first opening detection signal.

As shown in fig. 3, the opening detection part includes a conductive member 101, a spring 102, and a fixing post 103. The conductive piece 101 is arranged on the PCB09, and the fixing column 103 is fixed on the circuit breaker body. The spring 102 may be a torsion spring, and is sleeved on the fixing post 103. A first end of the spring 102 is in contact with the conductive member 101, a second end of the spring 102 is in contact with the static arc ignition angle 11, and the static arc ignition angle 11 is connected with the static contact 07.

Specifically, after the moving contact 06 and the static contact 07 are separated, no voltage loop is formed inside the circuit breaker, no voltage value exists on the opening detection part, and a first opening detection signal is sent to the remote control module. The remote control module can control the motor 01 to stop rotating according to a first brake-off detection signal of the brake-off detection piece. Correspondingly, when the moving contact 06 is in contact with the static contact 07, a loop is formed inside the circuit breaker, and the opening detection part has a voltage value and cannot send a first opening detection signal to the remote control module.

In this embodiment, by providing the opening detection element, whether the moving contact 06 and the static contact 07 are in contact or not can be determined according to a voltage condition in the opening detection element. Furthermore, the rotation condition of the motor 01 is controlled, and the possibility of misoperation of the breaker provided by the embodiment of the application is reduced.

Further, in the opening process, if a gear transmission mechanism or a rotating disc 03 and the like have faults, the opening process is affected, and at this time, it is not accurate to detect whether the breaker is in the opening state only by the opening detection piece.

Based on this, referring to fig. 4 and 5, the circuit breaker may further include a transmission member 12, and the transmission member 12 is connected to a rotating disc 03 in the opening mechanism of the circuit breaker. The PCB09 comprises a switching-off microswitch 14, and the switching-off microswitch 14 is arranged at a first position below the transmission piece 12. The transmission member 12 is provided with a contact member 15. The opening microswitch 14 is used for sending a second opening detection signal when the contact element 15 rotates to the first position and contacts with the opening microswitch 14, and the remote control module controls the motor 01 to stop rotating according to the second opening detection signal.

The transmission member 12 and the rotating disk 03 may be connected by a second connecting rod device 13. The transmission member 12 and the rotary disk 03 can be connected by a second link device 13, and the connection manner can be referred to between the rotary disk 03 and the operating mechanism 04, which is not described herein again.

Specifically, the motor 01 anticlockwise rotates, and the drive gear transmission mechanism rotates step by step, drives first fitting piece 05 clockwise rotation, and first fitting piece 05 and second fitting piece 031 cooperate and drive rolling disc 03 anticlockwise rotation. The rotary disk 03 drives the transmission element 12 and the contact element 15 on the transmission element 12 via the second linkage 13 in a clockwise direction. After opening, the transmission member 12 does not rotate any more. The contact 15 contacts with the opening microswitch 14 at the first position, the opening microswitch 14 sends a second opening detection signal to the remote control module, the second opening detection signal is used for informing the remote control module, and the circuit breaker is in an opening state, so that the remote control module controls the motor 01 to stop rotating according to the second opening detection signal.

After the opening, the contact element 15 is in contact with the opening microswitch 14 arranged on the PCB09 at the first position, so that whether the breaker is in the opening state can be detected, and the rotation condition of the motor 01 can be controlled. The remote control module controls the motor 01 to stop rotating according to the first brake-off detection signal and/or the second brake-off detection signal, so that the accuracy of brake-off state detection can be improved.

In practical applications, the opening microswitch 14 can also be arranged at a second position (not shown in the figure) below the rotary disc 03, and the rotary disc 03 is provided with a second contact piece. The opening microswitch 14 is used for sending a second opening detection signal when the second contact element rotates to a second position and contacts with the opening microswitch 14, and the remote control module controls the motor 01 to stop rotating according to the second opening detection signal.

Specifically, the motor 01 rotates counterclockwise, and the drive gear transmission mechanism rotates step by step. And then the first fitting piece 05 is driven to rotate clockwise, and the first fitting piece 05 and the second fitting piece 031 are matched to drive the rotating disc 03 and the second contact piece on the rotating disc 03 to rotate anticlockwise. After opening, the rotary disk 03 no longer rotates and the second contact piece contacts the opening microswitch 14 in the second position. The opening microswitch 14 sends a second opening detection signal to the remote control module, the second opening detection signal is used for informing the remote control module that the circuit breaker is in an opening state, so that the remote control module controls the motor 01 to stop rotating according to the second opening detection signal.

After the circuit breaker is opened, the second contact piece is in contact with an opening microswitch arranged on the PCB09 at the second position, so that whether the circuit breaker is in an opening state or not can be detected, and the rotation condition of the motor 01 can be further controlled. The remote control module controls the motor 01 to stop rotating according to the first brake-off detection signal and/or the second brake-off detection signal, and the accuracy of brake-off state detection can be improved.

In one embodiment, as shown in fig. 1, in order to facilitate a user to observe whether the circuit breaker is in the open position, the circuit breaker provided by the embodiment of the present application may further include a handle 16. The transmission member 12 is further connected with a handle 16 through a handle connecting rod 17, and the transmission member 12 drives the handle 16 to rotate to a brake separating position through the handle connecting rod 17.

In the present exemplary embodiment, the handle 16 is connected to the transmission element 12 via a handle link 17, and the transmission element 12 is also connected to the rotary disk 03 via a second linkage 13. The rotating disc 03 and the operating mechanism 04 are connected through a first connecting rod device 08, and the operating mechanism 04 can drive the moving contact 06 to move towards the fixed contact 07, or the operating mechanism 04 drives the moving contact 06 to move away from the fixed contact 07.

It can be understood that the transmission member 12 is connected with the handle 16 through the handle connecting rod 17, so that the automatic brake separating structure and the manual brake separating structure exist in a shared structure, and the space can be saved. In addition, when the rotating disc 03 rotates, the driving member 12 can be driven to rotate. The transmission part 12 rotates, and the handle 16 can be driven to rotate through the handle connecting rod 17, so that a user can conveniently observe whether the circuit breaker is in an opening state or not.

A possible opening process of the circuit breaker provided by the present application is described below with reference to the above embodiments.

This application embodiment is after receiving the separating brake instruction of remote control module, driving motor 01 rotates, for example, driving motor 01 anticlockwise rotation, and motor 01 drives first gear 021 anticlockwise rotation. The first gear 021 drives the bull gear of the second gear 022 to rotate clockwise, and the pinion gear of the second gear 022 below the bull gear of the second gear 022 drives the bull gear of the third gear 023 to rotate counterclockwise. The pinion gear of the third gear member 023, which is located above the bull gear of the third gear member 023, drives the fourth gear member 024 and the first mating member 05 provided on the fourth gear member 024 to rotate clockwise. The first fitting piece 05 is fitted with the second fitting piece 031, and the gear transmission mechanism can directly drive the rotating disc 03 to rotate counterclockwise. The rotating disc 03 drives the operating mechanism 04 to rotate counterclockwise through the first connecting rod device 08, and the operating mechanism 04 drives the moving contact 06 to be far away from the fixed contact 07. The circuit breaker does not form a voltage loop inside, and the opening detection part does not have a voltage value and sends a first opening detection signal to the remote control module.

The gear transmission mechanism can directly drive the rotating disc 03 to rotate anticlockwise, and the rotating disc 03 also drives the transmission piece 12 to rotate clockwise through the second connecting rod device 13. The contact member 15 rotates to the first position, contacts with the opening microswitch 14 and sends out a second opening detection signal. The remote control module controls the motor 01 to stop rotating according to the first brake-off detection signal and/or the second brake-off detection signal.

The transmission 12 rotates the handle 16 to the open position via the handle link 17.

At this time, the handle 16 can be rotated to the on position, and the handle 16 drives the transmission member 12 to rotate counterclockwise through the handle link 17. After the transmission member 12 rotates counterclockwise, the second link device 13 can drive the rotating disc 03 to rotate clockwise. The rotary disk 03 can drive the operating member 04 to rotate clockwise via the first linkage 08. The operating mechanism 04 drives the moving contact 06 to rotate clockwise, and the moving contact 06 moves towards the fixed contact 07, so that closing is realized. Waiting for receiving the opening command of the next remote control module.

Or, after the opening is finished, waiting for receiving the closing instruction of the remote control module. And after the switching-on is realized, waiting for receiving a switching-off instruction of the next remote control module.

In an alternative mode, the circuit breaker provided by the embodiment of the application is a plug-in circuit breaker, and the plug-in circuit breaker can be of a rectangular structure.

The plug-in circuit breaker provided by the embodiment of the application has the advantages of small volume and compact layout, and can quickly realize the opening process.

Those of skill in the art will understand that while some embodiments herein include certain features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

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

Claims (11)

1. An opening mechanism of a circuit breaker, characterized in that, the opening mechanism includes:

the device comprises a motor, a gear transmission mechanism, a rotating disc and an operating mechanism;

the gear transmission mechanism comprises a multi-stage gear assembly which is meshed in sequence, a first fitting piece is arranged on the gear transmission mechanism, and a second fitting piece is arranged on the rotating disc;

the motor is used for driving the gear transmission mechanism to rotate step by step, the first fitting piece and the second fitting piece are matched to drive the rotating disc to rotate, the rotating disc drives the operating mechanism to rotate, and the operating mechanism drives the moving contact to be far away from the fixed contact to realize brake opening.

2. The opening mechanism as claimed in claim 1, wherein the second engagement member is a protruding handle, the first engagement member is an opening boss, and the rotation paths of the first engagement member and the second engagement member intersect with each other so as to engage in an intersection range.

3. The opening mechanism as claimed in claim 2, wherein the first engaging member has an arc surface, and the first engaging member pushes the second engaging member via the arc surface to rotate the rotating disc.

4. The opening mechanism as claimed in claim 1, wherein the first mating member is configured as a gear segment and the second mating member is configured as a gear segment that meshes with the first mating member.

5. The brake separating mechanism of claim 1, wherein the multistage gear assembly comprises four-stage gear assemblies which are meshed in sequence, namely a first gear member, a second gear member, a third gear member and a fourth gear member, and the transmission ratio of the meshed two-stage gear members is greater than 1.

6. The opening mechanism as claimed in claim 5, wherein the second gear member and the third gear member each include a gear wheel and a pinion gear coaxially disposed, the first gear member is engaged with the gear wheel of the second gear member, the pinion gear of the second gear member is engaged with the gear wheel of the third gear member, and the pinion gear of the third gear member is engaged with the fourth gear member.

7. A circuit breaker comprising a Printed Circuit Board (PCB) and the opening mechanism of the circuit breaker according to any one of claims 1 to 6,

the PCB is electrically connected with a motor in a switching-off mechanism of the circuit breaker, and the PCB is used for supplying power to the motor.

8. The circuit breaker as claimed in claim 7, wherein the circuit breaker further comprises a switch-off detection component, the switch-off detection component is configured to send out a first switch-off detection signal when the switch-off of the circuit breaker is detected, and the remote control module controls the motor to stop rotating according to the first switch-off detection signal.

9. The circuit breaker according to claim 7, characterized in that the circuit breaker further comprises a transmission member, the transmission member is connected with a rotating disc in a tripping mechanism of the circuit breaker, the PCB comprises a tripping microswitch, the tripping microswitch is arranged at a first position below the transmission member, and a contact member is arranged on the transmission member;

the opening microswitch is used for sending a second opening detection signal when the contact element rotates to the first position and contacts with the opening microswitch, and the remote control module controls the motor to stop rotating according to the second opening detection signal.

10. The circuit breaker of claim 9, further comprising a handle; the transmission part is connected with the handle through a handle connecting rod, and the transmission part drives the handle to rotate to a brake separating position through the handle connecting rod.

11. The circuit breaker of claim 7, wherein the circuit breaker is a plug-in circuit breaker.

Images