CN112038188A

CN112038188A - Intelligent miniature circuit breaker with remote control function

Info

Publication number: CN112038188A
Application number: CN202010801372.XA
Authority: CN
Inventors: 张利伟
Original assignee: Yueqing Meika Electric Co ltd
Current assignee: Yueqing Meika Electric Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-12-04

Abstract

The application discloses an intelligent miniature circuit breaker with a remote control function, which relates to the field of circuit protectors and comprises a shell, wherein a wire inlet end and a wire outlet end which are used for connecting a circuit are arranged on the shell; the shell is provided with a handle, the handle is connected with a moving contact operating mechanism through a first connecting rod, and the handle rotates and drives the moving contact operating mechanism to act so as to realize the connection or disconnection of a wire inlet end and a wire outlet end; the handle is connected with an electric operating mechanism through a second connecting rod, the electric operating mechanism comprises a tripping piece movably connected with the shell, and a remote control communication module is arranged in the shell; the remote control communication module controls the action of a release piece or a handle in the electric operating mechanism to realize the action of the moving contact operating mechanism, so that the connection or disconnection of the wire inlet end and the wire outlet end is realized. This application has the effect of remote control circuit breaker combined floodgate or separating brake on the basis of keeping original manual control, reduces holistic occupation space, is favorable to the installation.

Description

Intelligent miniature circuit breaker with remote control function

Technical Field

The application relates to the field of circuit protectors, in particular to an intelligent miniature circuit breaker with a remote control function.

Background

The breaker is a mechanical switch appliance which can connect, bear and break the current under the normal circuit condition, and can also connect, bear and break the current for a certain time under the specified abnormal circuit condition.

The miniature circuit breaker of intelligence on the existing market, the installation width all is greater than ordinary circuit breaker, mostly installs divide-shut brake electricity behaviour mechanism additional on the left side of ordinary circuit breaker or right side and realizes remote control to lead to holistic occupation space grow, be difficult to satisfy the installation demand.

Disclosure of Invention

In order to realize that miniature circuit breaker self carries the remote control function, reduces whole occupation space, satisfies the installation demand, this application provides an intelligent miniature circuit breaker with remote control function, on keeping original artificial control's basis, has the effect that the remote control circuit breaker closed a floodgate or the separating brake, reduces holistic occupation space, is favorable to the installation.

The application provides a pair of miniature circuit breaker of intelligence with remote control function adopts following technical scheme:

an intelligent miniature circuit breaker with a remote control function comprises a shell, wherein a wire inlet end and a wire outlet end which are used for connecting a circuit are arranged on the shell; the shell is provided with a handle, the handle is connected with a moving contact operating mechanism through a first connecting rod, and the handle rotates and drives the moving contact operating mechanism to act so as to realize the connection or disconnection of a wire inlet end and a wire outlet end; the handle is connected with an electric operating mechanism through a second connecting rod, the electric operating mechanism comprises a tripping piece movably connected with the shell, and a remote control communication module is arranged in the shell; the remote control communication module controls a tripping piece or a handle in the electric operating mechanism to act so as to realize the action of the moving contact operating mechanism, thereby realizing the connection or disconnection of the incoming line end and the outgoing line end.

By adopting the technical scheme, the moving contact operating mechanism can rotate manually by rotating the handle, so that the connection or disconnection of the incoming line end and the outgoing line end is realized, namely the switching-on or switching-off of the circuit breaker is controlled manually. The shell is internally provided with a remote control communication module for receiving external signals, and then the remote control communication module drives the electric operating mechanism to act according to the external signals so as to realize the action of the release piece and the handle, thereby realizing the rotation of the moving contact operating mechanism and further realizing the connection or disconnection of the incoming line end and the outgoing line end. The miniature circuit breaker has the function of remotely controlling switching-on or switching-off, does not need to use an external switching-on/off electric operating mechanism, occupies a small space on the whole, and can be provided with more quantity in the same distribution box space.

Preferably, a current release is further arranged in the shell, the current release comprises a movable iron core, a static iron core, a return spring and a push rod, and the return spring is located between the static iron core and the movable iron core and applies a force far away from the static iron core to the movable iron core; when the current passing through the current release is overlarge, the movable iron core approaches to the static iron core and drives the push rod to extend out to impact the moving contact operating mechanism; the current release also comprises a driving piece and a counter force spring which are arranged in the movable iron core in a penetrating way; the driving piece and the push rod are relatively fixedly arranged, and the counter force spring applies force far away from the static iron core to the driving piece; the electric operating mechanism also comprises a motor component controlled by the remote control communication module, a screw fixedly connected with an output shaft of the motor component and a nut in threaded connection with the screw; the releasing piece is meshed with the nut, and the nut is connected with the handle through a second connecting rod; the tripping piece is positioned on one side of the driving piece and can push the driving piece to move so as to realize that the push rod pushes the moving contact operating mechanism to act, and the wire inlet end and the wire outlet end are disconnected.

By adopting the technical scheme, the current release has the effect of tripping protection when the current is too large or overloaded, and the specific mode is that the movable iron core moves and pushes the push rod to move, and the push rod moves and pushes the movable contact operating mechanism to rotate so as to realize the opening of the circuit breaker. After the driving piece and the push rod are relatively fixed, the push rod can push the moving contact operating mechanism only by pushing the driving piece to move towards the moving contact operating mechanism, and finally the opening of the circuit breaker is realized. If the breaker is in a closing state, the motor assembly works and drives the nut to move towards a direction far away from the handle, the nut is meshed with the release fastener after moving for a certain distance and drives the release fastener to push the driving piece to move so as to realize the action of the moving contact operating mechanism, and the breaker is opened; under this state, if the user ordered the circuit breaker dead lock (the nut is located the position department of keeping away from the handle most promptly), can realize that the separating brake lock is dead, the circuit breaker can not artificial manual combined floodgate again, because overcurrent fault in the circuit and after the separating brake, the unable manual combined floodgate of user improves the security, avoids the potential safety hazard. If the circuit breaker is for the separating brake state, can move towards the direction that is close to the handle through motor element work and drive nut, the nut drives the separating fastener and keeps away from the driving piece and removes the back, the nut no longer with the meshing of separating fastener, the nut drives second connecting rod top and moves the handle and rotate, thereby realize the circuit breaker combined floodgate, the user is dead if order circuit breaker lock (the nut is located the position department that is closest to the handle promptly), then realize that the combined floodgate lock is dead, under this state, the circuit breaker can not be manual separating brake again, can avoid some personnel to lead to the circuit breaker separating brake because of the maloperation. If the user does not order the circuit breaker to be locked, the normal working state is as follows: after the second connecting rod is switched on, the motor rotates reversely, the nut moves to the free position, and at the moment, the handle can be manually switched off or switched on. It should be mentioned that, when the current is too large or overloaded, the movable iron core is moved by the attraction force, at this time, the return spring is compressed, when the current is normal, the movable iron core is reset by the acting force of the return spring, and the counter spring is not compressed in this process. When for remote control circuit breaker separating brake, take off the fastener top and move the driving piece, the driving piece drives the push rod and makes the push rod top move moving contact operating device, and it is the reaction spring atress compressed this moment, when taking off the fastener not when the application of force to the driving piece, also lean on reaction spring's effort to realize driving piece and push rod and reset, at this in-process, reset spring can not compressed. The two conditions are reset by different springs, so that the service life of the springs is prolonged, and the instant protection performance of the circuit breaker is ensured.

Preferably, the release member comprises a gear rotatably connected to the housing and a rack slidably connected to the housing, the gear is engaged with the nut, the gear is engaged with the rack, and one end of the rack is located at one side of the driving member and can push the driving member to move; the driving piece and the rack are two independent parts, or the driving piece and the rack are fixed with each other.

Through adopting above-mentioned technical scheme, the cooperation of gear and rack is more stable, and the rack can the level set up in one side of driving piece, and it is more stable to remove. Wherein, if driving piece and rack are two independent parts, have stable in structure, advantage that the reliability is high. If the driving piece and the rack are fixed with each other, the driving piece and the rack can be integrally formed by the same component, and the cost is low.

Preferably, the rack is provided with a yielding groove for the gear to pass through.

By adopting the technical scheme, the distance between the gear and the rack can be reduced, the space size required by the gear and the rack is reduced, and meanwhile, the gear can rotate for a section and then is not meshed with the rack.

Preferably, the tripping part comprises a tripping plate rotatably connected to the shell, a part of tooth-shaped structures on the tripping plate is meshed with the nut, one end of the tripping plate, which is far away from the hinged part, is a cam surface, and the cam surface can push the driving part to move.

By adopting the technical scheme, the trip plate is an integral component, which is beneficial to installation.

Preferably, one end of the driving piece facing the tripping plate is fixedly provided with an abutting part.

Through adopting above-mentioned technical scheme, the increase is by the area of butt, makes things convenient for the dropout board to withstand butt portion and orders about the driving piece and removes.

Preferably, the shell is fixedly connected with a deformable limiting column, and when the motor assembly drives the circuit breaker to switch on, the cam surface of the tripping plate is clamped on one side of the limiting column, which is far away from the driving piece, so that the tripping plate is limited.

Through adopting above-mentioned technical scheme, when needs are electronic to realize the circuit breaker combined floodgate, the cam surface orientation of trip plate rotates the direction of keeping away from the driving piece, and after the cam surface of trip plate rotated to spacing post and kept away from a side of driving piece, nut and trip plate no longer meshed, need mention that, spacing post only one end is fixed with the casing, when the trip plate rotated through spacing post, and deformation can take place for the atress in spacing post. When the motor element is out of work, the nut does not drive the tripping plate to rotate, the cam surface of the tripping plate is abutted with the limiting column, the effect of limiting column rotation is achieved, and the phenomenon that the tripping plate impacts the driving piece to cause mistaken tripping is avoided.

Preferably, the handle is provided with a first hinge hole for inserting the first connecting rod, and the handle is provided with a special-shaped groove in sliding fit with the second connecting rod.

Through adopting above-mentioned technical scheme, the swing joint of the second connecting rod of being convenient for and handle is established in the dysmorphism groove, can satisfy electric operating mechanism and artificial manual drive simultaneously to the control of handle.

Preferably, the nut is provided with a reflecting element, and the shell is internally provided with a first detection point for detecting the position of the reflecting element and corresponding to the opening of the circuit breaker, a second detection point for detecting the position of the reflecting element and corresponding to the free position of the nut, and a third detection point for detecting the position of the reflecting element and corresponding to the closing of the circuit breaker.

Through adopting above-mentioned technical scheme, the position of nut is convenient for provide in the cooperation of first check point, second check point and third check point and reflecting element to be convenient for remote display and distinguish the circuit breaker state and the supplementary reason of judging the circuit breaker trouble. When the nut stops at the free position, one end of the second connecting rod inserted into the special-shaped groove is positioned at the upper end part in the special-shaped groove, so that manual opening or closing of the handle can be realized.

Preferably, a mode selection switch is arranged on the shell, and the local mode and the remote mode are selected through the mode selection switch; when the local mode is selected, the electric operating mechanism is in a closed state, and the circuit breaker cannot be controlled to be switched on or switched off remotely; when the remote mode is selected, the electric operating mechanism is in an open state, and the circuit breaker can be switched on or switched off through remote control.

By adopting the technical scheme, whether a remote control function is required or not can be selected according to actual conditions, and the practicability is high.

In summary, the present application has the following beneficial effects:

1. the nut is driven to move by the motor assembly, the motor assembly is controlled by the remote control communication module, and forward and reverse rotation of the motor assembly is realized by receiving signals, so that the movement of the nut is realized, and finally, the opening or closing of the remote control circuit breaker is realized;

2. when the circuit breaker is remotely controlled to be opened or closed, the opening locking or the closing locking can be realized, the circuit breaker is suitable for different conditions, and the circuit breaker has the effects of improving the operation safety and avoiding misoperation.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment;

fig. 2 is a partial structural schematic diagram of an open state of the circuit breaker after a part of a shell is hidden in an implementation;

fig. 3 is a schematic diagram of a partial structure implementing a central display electric operating mechanism, current release and moving contact operating mechanism;

fig. 4 is a schematic partial cross-sectional view of a current release in one implementation;

FIG. 5 is a schematic diagram of an electric operating mechanism in one embodiment;

FIG. 6 is an exploded view of the first, second, third and third inspection points, the reflector and the nut shown in a single embodiment;

FIG. 7 is a partial schematic structural view of the second embodiment with a part of the housing hidden;

fig. 8 is a schematic structural view of an electric operating mechanism in the second embodiment.

Reference numerals: 1. a housing; 2. a wire inlet end; 3. a wire outlet end; 4. a handle; 5. a first hinge hole; 6. a first link; 7. a moving contact operating mechanism; 8. static contact; 9. a moving contact; 10. an electric operating mechanism; 11. a second link; 12. a remote control communication module; 13. a communication interface; 14. a control circuit board; 15. a current release; 16. a movable iron core; 17. a counter-force spring; 18. a push rod; 19. a second hinge hole; 20. a screw; 21. a nut; 22. releasing the fastener; 23. a motor; 24. a reduction gear box; 25. a special-shaped groove; 26. a gear; 27. a rack; 28. a yielding groove; 29. a light reflecting element; 30. a first detection point; 31. a second detection point; 32. a third detection point; 33. a mode selection switch; 34. a releasing plate; 35. a cam surface; 36. an abutting portion; 37. a limiting column; 38. a drive member; 39. a stationary iron core; 40. a return spring.

Detailed Description

The implementation benefit is as follows:

the embodiment discloses an intelligent miniature circuit breaker with remote control function, refer to fig. 1, fig. 2, including casing 1, be provided with inlet wire end 2 and leading-out terminal 3 that are used for connecting wire on the casing 1, the rotation is connected with handle 4 on the casing 1, and it has first hinge hole 5 to open on the handle 4, and first link 6 has been inserted in first hinge hole 5, and the other end of first link 6 is connected with moving contact operating device 7. The incoming line end 2 is electrically connected with a static contact 8, a moving contact 9 is fixed on a moving contact operating mechanism 7, the moving contact 9 is electrically connected with the outgoing line end 3, and the moving contact operating mechanism 7 can realize the contact or separation of the moving contact 9 and the static contact 8 through rotation, so that the incoming line end 2 and the outgoing line end 3 are connected or disconnected, namely the switching-on or switching-off of the circuit breaker is realized.

Referring to fig. 2 and 3, an electric operating mechanism 10 is disposed in the housing 1, and the handle 4 and the electric operating mechanism 10 are connected by a second link 11. A remote control communication module 12 for controlling whether the electric operating mechanism 10 works is arranged in the housing 1, and the remote control communication module 12 comprises a communication interface 13 and a control circuit board 14 which are arranged on the housing 1. The electric operating mechanism 10 acts to realize the rotation of the moving contact operating mechanism 7, thereby realizing the connection or disconnection of the incoming line end 2 and the outgoing line end 3, and finally realizing the switching-on or switching-off of the circuit breaker.

Referring to fig. 2 and 3, a current release 15 is further disposed in the housing 1 between the electric operating mechanism 10 and the movable contact operating mechanism 7. One end of a coil on the current release 15 is electrically connected with the incoming line end 2, and the other end is electrically connected with the static contact 8.

Referring to fig. 3 and 4, the current release 15 includes a movable iron core 16, a stationary iron core 39, a return spring 40, and a push rod 18. The return spring 40 is located between the stationary core 39 and the movable core 16 and applies a force to the movable core 16 away from the stationary core 39, and one end of the movable core 16 facing the stationary core 39 is in contact with the push rod 18. When the current passing through the coil on the current release 15 is too large, the movable iron core 16 is attracted, the movable iron core 16 approaches to the static iron core 39 and drives the push rod 18 to extend out to impact the movable contact operating mechanism 7, and the movable contact operating mechanism 7 rotates, so that the opening of the circuit breaker is realized.

Referring to fig. 3 and 4, the current release 15 further includes a driving member 38 penetrating the movable iron core 16 and a reaction spring 17. The driver 38 is fixed to the push rod 18, and the reaction spring 17 applies a force to the driver 38 to move away from the stationary core 39.

Referring to fig. 2 and 3, the electric operating mechanism 10 includes a motor assembly controlled by the remote control communication module 12, a screw 20 fixedly connected to an output shaft of the motor assembly, a nut 21 screwed on the screw 20, and a release 22 movably connected to the housing 1. The motor assembly comprises a motor 23 and a reduction gear box 24, wherein the motor 23 can be a direct current brush motor or a direct current brushless motor or an alternating current motor; the reduction gear box 24 can be a straight gear reduction gear box 24 or a planetary gear reduction gear box. The release 22 is partially engaged with the nut 21, and the release 22 is located at one side of the driving member 38 and can push the driving member 38 to move so as to realize the action of pushing the movable contact operating mechanism 7 by the push rod 18. The nut 21 is provided with a second hinge hole 19 for inserting one end of the second connecting rod 11, and the handle 4 is provided with a special-shaped groove 25 which is used for connecting the other end of the second connecting rod 11 in a sliding way and is arranged in an arc shape. The arrangement of the special-shaped groove 25 facilitates the movable connection of the second connecting rod 11 and the handle 4, and can simultaneously meet the control of the electric operating mechanism 10 and the manual driving on the handle 4.

Referring to fig. 2 and 3, the release member 22 includes a gear 26 rotatably connected to the housing 1 and a rack 27 slidably connected to the housing 1, the gear 26 is engaged with the lower end of the nut 21, the gear 26 is engaged with the rack 27, and one end of the rack 27 is located at one side of the driving member 38 and can push the driving member 38 to move. It should be mentioned that the driving member 38 and the rack 27 are two independent parts, which has the advantages of stable structure and high reliability.

When the circuit breaker is in a closing state, the motor assembly works to drive the nut 21 to move towards a direction far away from the handle 4, the nut 21 is meshed with the gear 26 after moving for a certain distance and drives the gear 26 to rotate anticlockwise, and the nut 21 is separated from the gear 26, so that the rack 27 moves rightwards and pushes the driving piece 38 to move to realize the action of the moving contact operating mechanism 7 and the opening of the circuit breaker; under this state, if the user ordered the circuit breaker dead lock (being located the position department of keeping away from handle 4 most promptly), can realize that the separating brake lock is dead, the circuit breaker can not artificial manual combined floodgate again, and when the circuit breaker because overcurrent fault in the circuit and after the separating brake, the unable manual combined floodgate of user improves the security, avoids the potential safety hazard. If the circuit breaker is for the separating brake state, can be through motor element work and drive nut 21 towards the direction removal that is close to handle 4, nut 21 drives gear 26 and rotates clockwise until nut 21 no longer with the gear 26 meshing, at this in-process, rack 27 removes to the direction of keeping away from moving contact operating device 7, driving piece 38 resets under reaction spring 17's effort, nut 21 drives second connecting rod 11 simultaneously and pushes up the handle 4 and rotate, thereby realize the circuit breaker combined floodgate, the user is dead if the command circuit breaker locking (namely nut 21 is located the position department that is closest to handle 4), realize the combined floodgate locking, under this state, the circuit breaker can not be artificial manual separating brake again, can avoid some personnel to lead to the circuit breaker separating brake because of the maloperation. If the user does not command the motor assembly to be locked, the normal working state is as follows: after the second connecting rod 11 is switched on, the motor 23 rotates reversely, the nut 21 moves to the free position, and at the moment, the handle 4 can be switched on or off manually. Wherein, the free position is a specific position of the nut 21 between the opening and closing of the circuit breaker, when the nut 21 stops at the free position (the state in fig. 2), one end of the second connecting rod 11 inserted into the special-shaped groove 25 is located at the upper end part in the special-shaped groove 25, thus realizing the manual opening or closing of the handle 4. It should also be mentioned that the engagement between the gear 26 and the rack 27 is more stable, the rack 27 can be horizontally disposed on one side of the driving member 38 and directly aligned with the driving member 38, and the contact and movement between the driving member 38 and the rack 27 are more stable.

Referring to fig. 5, the rack 27 is provided with an abdicating groove 28 for the gear 26 to pass through, so that the distance between the gear 26 and the rack 27 can be reduced, the size of the space required by the gear 26 and the rack 27 can be reduced, and the gear 26 can be prevented from being meshed with the rack 27 after rotating for a period.

Referring to fig. 2 and 6, a reflecting element 29 is mounted on the nut 21, and a first detection point 30 for detecting the position of the reflecting element 29 and corresponding to the opening of the circuit breaker, a second detection point 31 for detecting the position of the reflecting element 29 and corresponding to the free position of the nut 21, and a third detection point 32 for detecting the position of the reflecting element 29 and corresponding to the closing of the circuit breaker are respectively arranged in the housing 1. The first detection point 30, the second detection point 31 and the third detection point 32 are all arranged on the control circuit board 14, and the first detection point 30, the second detection point 31, the third detection point 32 and the reflecting element 29 are matched to provide the position of the nut 21 conveniently, so that the state of the circuit breaker can be displayed and distinguished remotely, and the reason of the fault of the circuit breaker can be judged in an auxiliary mode.

Referring to fig. 1 and 2, a mode selection switch 33 is provided on the housing 1, and the local mode and the remote mode are selected by the mode selection switch 33; when the local mode is selected, the electric operating mechanism 10 functions in a closed state, and at the moment, the circuit breaker cannot be remotely controlled to be switched on or switched off; when the remote mode is selected, the electric operating mechanism 10 functions in an open state, and at this time, the circuit breaker can be switched on or off through remote control. Whether a remote control function is needed or not can be selected according to actual conditions, and the practicability is high.

The concrete working condition effects are as follows:

when the mode selection switch 33 on the circuit breaker selects a local mode, the switching-on and switching-off of the circuit breaker can be manually realized by rotating the handle 4, and the remote switching-on or switching-off of the circuit breaker cannot be remotely controlled at the moment.

When the mode selection switch 33 on the circuit breaker selects the remote mode, the electric operating mechanism 10 can control the remote closing or opening of the circuit breaker. If the motor 23 does not work, the circuit breaker still supports manual rotation of the handle 4 to realize switching-on or switching-off of the circuit breaker. If the motor 23 works and the nut 21 moves to one end close to the handle 4, the circuit breaker realizes remote control switching-on and locking of the switching-on, and manual switching-off by rotating the handle 4 cannot be realized; if the motor 23 works and the nut 21 moves to the end far away from the handle 4, the breaker realizes remote brake opening and the brake opening is locked, and the breaker cannot be manually switched on through rotating the handle 4.

The remote control communication module 12 is used for receiving an external signal, and then the electric operating mechanism 10 is driven to act according to the external signal so as to realize the rotation of the moving contact operating mechanism 7, and further realize the connection or disconnection of the incoming line end 2 and the outgoing line end 3. The miniature circuit breaker has the function of remotely controlling switching-on or switching-off, does not need to use an external switching-on/off electric operating mechanism, occupies a small space on the whole, and can be provided with more quantity in the same distribution box space.

In addition, regarding the arrangement of the return spring 40 and the reaction spring 17, it should be explained that when the current is too large or overloaded, the movable iron core 16 is attracted by the attraction force and moves to be close to the stationary iron core 39, and at this time, the return spring 40 is compressed, and when the current is normal, the return of the movable iron core 16 is realized by the urging force of the return spring 40, and the reaction spring 17 is not compressed in this process. When the breaker is remotely controlled to open the brake, the release 22 pushes the driving member 38, the driving member 38 drives the push rod 18 and enables the push rod 18 to push the movable contact operating mechanism 7, at this time, the reaction spring 17 is stressed and compressed, when the release 22 does not apply force to the driving member 38, the driving member 38 and the push rod 18 are reset by the acting force of the reaction spring 17, and in the process, the reset spring 40 cannot be compressed. The two conditions are reset by different springs, so that the service life of the springs is prolonged, and the instant protection performance of the circuit breaker is ensured.

Example two:

in contrast to the first embodiment, the driving member 38 and the rack 27 are fixedly connected to each other, so that the driving member 38 and the rack 27 can be integrally formed as one unit, which has the advantage of low cost.

Example three:

referring to fig. 7 and 8, in contrast to the first embodiment, the trip unit 22 is a trip plate 34 rotatably connected to the housing 1, a part of the tooth structure of the trip plate 34 is engaged with the nut 21, and an end of the trip plate 34 away from the hinge is a cam surface 35, and the cam surface 35 can push the driving member 38 to move. Compared with the first embodiment, the trip plate 34 in the third embodiment is an integral component, which is beneficial to installation.

Referring to fig. 7 and 8, different from the first embodiment, an abutting portion 36 is fixedly disposed at one end of the iron core facing the trip plate 34, so as to increase the area that can be abutted, and facilitate the trip plate 34 to abut against the abutting portion 36 and drive the driving member 38 to move.

Referring to fig. 7 and 8, different from the first embodiment, a deformable limiting post 37 is fixedly connected to the housing 1, and when the motor assembly drives the circuit breaker to close, the cam surface 35 of the trip plate 34 is clamped on a side of the limiting post 37 away from the driving member 38 to limit the trip plate 34. When the circuit breaker needs to be switched on electrically, the cam surface 35 of the trip plate 34 rotates towards the direction away from the driving piece 38, until the cam surface 35 of the trip plate 34 rotates to the side, away from the driving piece 38, of the limiting column 37, the nut 21 is not meshed with the trip plate 34, it needs to be mentioned that only one end of the limiting column 37 is fixed with the shell 1, and when the trip plate 34 rotates to pass through the limiting column 37, the limiting column 37 can be deformed under stress. When the motor assembly does not work, the nut 21 does not drive the trip plate 34 to rotate, the cam surface 35 of the trip plate 34 is abutted to one end, away from the movable contact operating mechanism 7, of the limiting column 37, so that the rotating effect of the limiting column 37 is achieved, and the phenomenon that the trip plate 34 impacts the driving piece 38 to cause error tripping is avoided.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An intelligent miniature circuit breaker with a remote control function comprises a shell (1), wherein a wire inlet end (2) and a wire outlet end (3) which are used for connecting a circuit are arranged on the shell (1); be provided with handle (4) on casing (1), its characterized in that: the handle (4) is connected with a moving contact operating mechanism (7) through a first connecting rod (6), and the handle (4) rotates and drives the moving contact operating mechanism (7) to act so as to realize the connection or disconnection of the incoming line end (2) and the outgoing line end (3); the handle (4) is connected with an electric operating mechanism (10) through a second connecting rod (11), the electric operating mechanism (10) comprises a tripping piece (22) movably connected to the shell (1), and a remote control communication module (12) is arranged in the shell (1); the remote control communication module (12) controls the action of a release piece (22) or a handle (4) in the electric operating mechanism (10) to realize the action of the moving contact operating mechanism (7), so that the connection or disconnection of the incoming line end (2) and the outgoing line end (3) is realized.

2. The intelligent miniature circuit breaker with remote control function as claimed in claim 1, wherein: the current release (15) is further arranged in the shell (1), the current release (15) comprises a movable iron core (16), a static iron core (39), a reset spring (40) and a push rod (18), and the reset spring (40) is located between the static iron core (39) and the movable iron core (16) and applies force far away from the static iron core (39) to the movable iron core (16); when the current passing through the current release (15) is overlarge, the movable iron core (16) approaches to the static iron core (39) and drives the push rod (18) to extend out to impact the movable contact operating mechanism (7); the current release (15) also comprises a driving piece (38) and a reaction spring (17), wherein the driving piece is arranged on the movable iron core (16) in a penetrating way; the driving piece (38) and the push rod (18) are relatively fixedly arranged, and the counter force spring (17) applies force far away from the static iron core (39) to the driving piece (38); the electric operating mechanism (10) also comprises a motor component controlled by the remote control communication module (12), a screw rod (20) fixedly connected with an output shaft of the motor component and a nut (21) in threaded connection with the screw rod (20); the release piece (22) is meshed with the nut (21), and the nut (21) is connected with the handle (4) through the second connecting rod (11); the tripping piece (22) is positioned on one side of the driving piece (38) and can push the driving piece (38) to move so as to realize that the push rod (18) pushes the moving contact operating mechanism (7) to act, and the incoming line end (2) is disconnected with the outgoing line end (3).

3. The intelligent miniature circuit breaker with remote control function as claimed in claim 2, wherein: the fastening releasing piece (22) comprises a gear (26) rotatably connected to the shell (1) and a rack (27) slidably connected to the shell (1), the gear (26) is meshed with the nut (21), the gear (26) is meshed with the rack (27), and one end of the rack (27) is located on one side of the driving piece (38) and can push the driving piece (38) to move; the driving piece (38) and the rack (27) are two independent parts or are fixed with each other.

4. The intelligent miniature circuit breaker with remote control function of claim 3, characterized in that: the rack (27) is provided with a yielding groove (28) for the gear (26) to pass through.

5. The intelligent miniature circuit breaker with remote control function as claimed in claim 2, wherein: the disengaging piece (22) is including rotating disengaging plate (34) of connecting in casing (1), partial tooth profile structure on disengaging plate (34) with nut (21) meshing, the one end of articulated department is kept away from in disengaging plate (34) is cam surface (35), cam surface (35) can push up driving piece (38) and remove.

6. The intelligent miniature circuit breaker with remote control function as claimed in claim 5, wherein: an abutting part (36) is fixedly arranged at one end of the driving part (38) facing the tripping plate (34).

7. The intelligent miniature circuit breaker with remote control function as claimed in claim 5, wherein: the shell (1) is fixedly connected with a deformable limiting column (37), and when the motor assembly drives the breaker to be switched on, the cam surface (35) of the tripping plate (34) is clamped on one side, away from the driving piece (38), of the limiting column (37) to limit the tripping plate (34).

8. The intelligent miniature circuit breaker with remote control function as claimed in claim 2, wherein: the handle (4) is provided with a first hinge hole (5) for inserting the first connecting rod (6), and the handle (4) is provided with a special-shaped groove (25) in sliding fit with the second connecting rod (11).

9. The intelligent miniature circuit breaker with remote control function as claimed in claim 2, wherein: the automatic switch-on device is characterized in that a reflecting element (29) is mounted on the nut (21), a first detection point (30) used for detecting the position of the reflecting element (29) and corresponding to the switch-off of the circuit breaker, a second detection point (31) used for detecting the position of the reflecting element (29) and corresponding to the position of the nut (21) at the free position, and a third detection point (32) used for detecting the position of the reflecting element (29) and corresponding to the switch-on of the circuit breaker are respectively arranged in the shell (1).

10. The intelligent miniature circuit breaker with remote control function as claimed in claim 2, wherein: the shell (1) is provided with a mode selection switch (33), and a local mode and a remote mode are selected through the mode selection switch (33); when the local mode is selected, the electric operating mechanism (10) is in a closed state, and the circuit breaker cannot be remotely controlled to be switched on or switched off; when the remote mode is selected, the electric operating mechanism (10) is in an open state, and the circuit breaker can be switched on or switched off through remote control.