An intelligent miniature circuit breaker with remote control function

Abstract

The present application discloses an intelligent miniature circuit breaker with a remote control function, which relates to the field of circuit protectors, and includes a housing, on which an incoming line terminal and an outgoing line terminal for connecting a line are arranged; a handle is arranged on the housing, and the handle is connected to a moving contact operating mechanism through a first connecting rod, and the handle rotates and drives the moving contact operating mechanism to operate to achieve the connection or disconnection of the incoming line terminal and the outgoing line terminal; the handle is connected to an electric operating mechanism through a second connecting rod, and the electric operating mechanism includes a tripping member movably connected to the housing, and a remote control communication module is arranged in the housing; the remote control communication module controls the tripping member or handle in the electric operating mechanism to operate the moving contact operating mechanism, thereby achieving the connection or disconnection of the incoming line terminal and the outgoing line terminal. The present application has the effect of remotely controlling the closing or opening of the circuit breaker on the basis of retaining the original manual control, reducing the overall occupied space, and facilitating installation.

Description

Technical Field

[0001] The present application relates to the field of circuit protectors, and in particular to an intelligent miniature circuit breaker with a remote control function. Background Art

[0002] A circuit breaker is a mechanical switch that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions.

[0003] The installation width of the intelligent miniature circuit breakers currently on the market is larger than that of ordinary circuit breakers. Most of them are equipped with opening and closing electric operating mechanisms on the left or right side of ordinary circuit breakers to achieve remote control, which increases the overall occupied space and makes it difficult to meet installation requirements. Summary of the invention

[0004] In order to enable the miniature circuit breaker to carry its own remote control function, reduce the overall occupied space, and meet installation requirements, the present application provides an intelligent miniature circuit breaker with a remote control function. While retaining the original manual control, it has the effect of remotely controlling the closing or opening of the circuit breaker, reduces the overall occupied space, and is conducive to installation.

[0005] The present application provides an intelligent miniature circuit breaker with remote control function, which adopts the following technical solution:

[0006] An intelligent miniature circuit breaker with a remote control function comprises a shell, on which an incoming line terminal and an outgoing line terminal for connecting a line are arranged; a handle is arranged on the shell, and the handle is connected to a moving contact operating mechanism via a first connecting rod, and the handle rotates and drives the moving contact operating mechanism to operate so as to connect or disconnect the incoming line terminal and the outgoing line terminal; the handle is connected to an electric operating mechanism via a second connecting rod, and the electric operating mechanism comprises a tripping member movably connected to the shell, and a remote control communication module is arranged in the shell; the remote control communication module controls the tripping member or the handle in the electric operating mechanism to operate the moving contact operating mechanism, thereby connecting or disconnecting the incoming line terminal and the outgoing line terminal.

[0007] By adopting the above technical solution, by turning the handle, the rotation of the moving contact operating mechanism can be realized artificially, so as to realize the connection or disconnection of the incoming and outgoing terminals, that is, the closing or opening of the circuit breaker can be controlled artificially. A remote control communication module is arranged in the housing to receive external signals, and then the electric operating mechanism is driven to move according to the external signals to realize the action of the tripping member and the handle, so as to realize the rotation of the moving contact operating mechanism, and then realize the connection or disconnection of the incoming and outgoing terminals. This miniature circuit breaker has the function of remote control closing or opening, and does not need to rely on an external closing and opening electric operating mechanism. It occupies less space overall, and more can be installed in the same distribution box space.

[0008] Preferably, a current release is also provided in the shell, and the current release includes a moving iron core, a static iron core, a reset spring and a push rod, wherein the reset spring is located between the static iron core and the moving iron core and applies a force to the moving iron core away from the static iron core; when the current passing through the current release is too large, the moving iron core approaches the static iron core and drives the push rod to extend to hit the moving contact operating mechanism; the current release also includes a driving member and a reaction spring penetrated by the moving iron core; the driving member and the push rod are relatively fixedly arranged, and the reaction spring applies a force to the driving member away from the static iron core; the electric operating mechanism also includes a motor assembly controlled by a remote control communication module, a screw fixedly connected to the output shaft of the motor assembly, and a nut threadedly connected to the screw; the release member is meshed with the nut, and the nut is connected to the handle through a second connecting rod; the release member is located on one side of the driving member and can push the driving member to move so that the push rod pushes the moving contact operating mechanism to operate, and the incoming and outgoing terminals are disconnected.

[0009] By adopting the above technical solution, the current release itself has the effect of tripping protection when the current is too large or overloaded. The specific method is to move the moving iron core and push the push rod to move, and the push rod moves and pushes the moving contact operating mechanism to rotate to realize the circuit breaker opening. After the driving member and the push rod are relatively fixed, as long as the driving member is pushed to move toward the moving contact operating mechanism, the push rod can push the moving contact operating mechanism, and finally realize the circuit breaker opening. If the circuit breaker is in the closed state, the motor assembly works and drives the nut to move in the direction away from the handle. After the nut moves a certain distance, it engages with the release member and drives the release member to push the driving member to move to realize the action of the moving contact operating mechanism, and the circuit breaker is opened; in this state, if the user commands the circuit breaker to lock (that is, the nut is located at the position farthest from the handle), the opening lock can be realized, and the circuit breaker can no longer be manually closed. When the circuit breaker is opened due to an overcurrent fault in the line, the user cannot close the circuit manually, thereby improving safety and avoiding safety hazards. If the circuit breaker is in the open state, the motor assembly can work and drive the nut to move toward the handle. After the nut drives the release part away from the driving part, the nut no longer engages with the release part, and the nut drives the second connecting rod to push the handle to rotate, thereby closing the circuit breaker. If the user commands the circuit breaker to be locked (that is, the nut is located at the position closest to the handle), the closing lock is achieved. In this state, the circuit breaker can no longer be manually opened, which can prevent some personnel from opening the circuit breaker due to misoperation. If the user does not command the circuit breaker to be locked, the normal working state is: after closing the circuit through the second connecting rod, the motor reverses and the nut moves to the free position. At this time, the handle can be manually opened or closed. It should be mentioned that when the current is too large or overloaded, the moving iron core moves due to attraction, and the reset spring is compressed at this time. When the current is normal, the moving iron core is reset by the force of the reset spring, and the reaction spring will not be compressed during this process. When the remote control circuit breaker is opened, the release part pushes the driving part, and the driving part drives the push rod and makes the push rod push the moving contact operating mechanism. At this time, the reaction spring is compressed. When the release part no longer exerts force on the driving part, the driving part and the push rod are reset by the force of the reaction spring. In this process, the reset spring will not be compressed. The two situations rely on different spring resets, which increases the service life of the spring and ensures the instantaneous protection performance of the circuit breaker.

[0010] Preferably, the release member includes a gear rotatably connected to the shell and a rack slidably connected to the shell, the gear is meshed with the nut, the gear and the rack are meshed, one end of the rack is located on one side of the driving member and can push the driving member to move; the driving member and the rack are two independent components, or the two are fixed to each other.

[0011] By adopting the above technical solution, the matching of the gear and the rack is more stable, and the rack can be horizontally arranged on one side of the driving member, and the movement is more stable. Among them, if the driving member and the rack are two independent components, they have the advantages of stable structure and high reliability. If the driving member and the rack are fixed to each other, they can be produced in one piece using the same component, which has the advantage of low cost.

[0012] Preferably, the rack is provided with a clearance groove for the gear to pass through.

[0013] By adopting the above technical solution, the distance between the gear and the rack can be shortened, the space required for the gear and the rack can be reduced, and at the same time, the gear can no longer mesh with the rack after rotating for a period of time.

[0014] Preferably, the release member includes a release plate rotatably connected to the housing, a partial toothed structure on the release plate engages with the nut, and one end of the release plate away from the hinge is a cam surface, and the cam surface can push the driving member to move.

[0015] By adopting the above technical solution, the trip plate is an integral component, which is convenient for installation.

[0016] Preferably, an abutment portion is fixedly provided on one end of the driving member facing the tripping plate.

[0017] By adopting the above technical solution, the abutted area is increased, making it convenient for the trip plate to abut the abutting portion and drive the driving member to move.

[0018] Preferably, a deformable limiting column is fixedly connected to the housing, and when the motor assembly drives the circuit breaker to close, the cam surface of the trip plate is clamped on the side of the limiting column away from the driving member to achieve the limiting of the trip plate.

[0019] By adopting the above technical solution, when the circuit breaker needs to be closed electrically, the cam surface of the trip plate rotates in the direction away from the driving member until the cam surface of the trip plate rotates to the side of the limit column away from the driving member, and the nut and the trip plate are no longer engaged. It should be mentioned that only one end of the limit column is fixed to the housing, and when the trip plate rotates through the limit column, the limit column can be deformed by force. When the motor assembly is not working, the nut does not drive the trip plate to rotate, and the cam surface of the trip plate abuts against the limit column, which has the effect of rotating the limit column, thereby avoiding the phenomenon of the trip plate hitting the driving member and causing the accidental tripping.

[0020] 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 for slidingly cooperating with the second connecting rod.

[0021] By adopting the above technical solution, the provision of the special-shaped groove facilitates the movable connection between the second connecting rod and the handle, which can simultaneously meet the control of the handle by the electric operating mechanism and manual drive.

[0022] Preferably, a reflective element is installed on the nut, and the shell is respectively provided with a first detection point for detecting the position of the reflective element and corresponding to the opening of the circuit breaker, a second detection point for detecting the position of the reflective element and corresponding to the nut in a free position, and a third detection point for detecting the position of the reflective element and corresponding to the closing of the circuit breaker.

[0023] By adopting the above technical solution, the cooperation of the first detection point, the second detection point and the third detection point and the reflective element facilitates the provision of the position of the nut, thereby facilitating the remote display and differentiation of the circuit breaker status and assisting in determining the cause of the circuit breaker failure. Among them, the free position is a specific position where the nut is located between the opening and closing of the circuit breaker. When the nut stops at this free position, the end of the second connecting rod inserted into the special-shaped groove is located at the upper end of the special-shaped groove, so that the manual opening or closing of the handle can be realized.

[0024] Preferably, a mode selection switch is provided on the shell, and a local mode and a remote mode are selected by the mode selection switch; when the local mode is selected, the electric operating mechanism function is in an off state, and the circuit breaker cannot be closed or opened remotely; when the remote mode is selected, the electric operating mechanism function is in an on state, and the circuit breaker can be closed or opened by remote control.

[0025] By adopting the above technical solution, it can be selected whether to have the remote control function according to the actual situation, which is highly practical.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. The nut is driven to move by the motor assembly, which is controlled by the remote control communication module. The motor assembly is rotated forward and reversely by receiving signals, thereby moving the nut and finally realizing the remote control of the circuit breaker opening or closing;

[0028] 2. When the circuit breaker is opened or closed by remote control, the opening or closing can be locked, which is suitable for different situations and has the effect of improving operational safety and avoiding misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of implementation one;

[0030] Figure 2 It is a partial structural schematic diagram of the circuit breaker in the open state after a part of the housing is hidden in the implementation;

[0031] Figure 3It is a partial structural schematic diagram highlighting the electric operating mechanism, the current release and the moving contact operating mechanism in the first embodiment;

[0032] Figure 4 It is a schematic diagram of a partial structural cross section of a current release in the first embodiment;

[0033] Figure 5 It is a structural schematic diagram of the electric operating mechanism in implementation one;

[0034] Figure 6 is an exploded schematic diagram highlighting the first detection point, the second detection point, the third detection point, the reflective element and the nut in the first implementation;

[0035] Figure 7 This is a schematic diagram of the local structure after a portion of the housing is hidden in the second embodiment;

[0036] Figure 8 It is a structural schematic diagram of the electric operating mechanism in the second embodiment.

[0037] Reference numerals: 1, housing; 2, inlet terminal; 3, outlet terminal; 4, handle; 5, first hinge hole; 6, first connecting rod; 7, moving contact operating mechanism; 8, stationary contact; 9, moving contact; 10, electric operating mechanism; 11, second connecting rod; 12, remote control communication module; 13, communication interface; 14, control circuit board; 15, current release; 16, moving iron core; 17, reaction spring; 18, push rod; 19, second hinge hole; 20 , screw; 21, nut; 22, release member; 23, motor; 24, reduction gear box; 25, special-shaped groove; 26, gear; 27, rack; 28, give way groove; 29, reflective element; 30, first detection point; 31, second detection point; 32, third detection point; 33, mode selection switch; 34, release plate; 35, cam surface; 36, abutment; 37, limit column; 38, drive member; 39, static iron core; 40, reset spring. DETAILED DESCRIPTION

[0038] Implementation Benefit 1:

[0039] This embodiment discloses an intelligent miniature circuit breaker with remote control function. Figure 1 , Figure 2, including a housing 1, on which an inlet terminal 2 and an outlet terminal 3 for connecting a wire are arranged, a handle 4 is rotatably connected to the housing 1, a first hinge hole 5 is opened on the handle 4, a first connecting rod 6 is inserted into the first hinge hole 5, and the other end of the first connecting rod 6 is connected to a moving contact operating mechanism 7. The inlet terminal 2 is electrically connected to a stationary contact 8, a moving contact 9 is fixed on the moving contact operating mechanism 7, and the moving contact 9 is electrically connected to the outlet terminal 3. The moving contact operating mechanism 7 can realize the contact or separation of the moving contact 9 and the stationary contact 8 by rotating, thereby realizing the connection or disconnection of the inlet terminal 2 and the outlet terminal 3, that is, realizing the closing or opening of the circuit breaker.

[0040] Reference Figure 2 , Figure 3 An electric operating mechanism 10 is arranged in the housing 1, and the handle 4 is connected to the electric operating mechanism 10 by a second connecting rod 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 includes a communication interface 13 and a control circuit board 14 arranged on the housing 1. The action of the electric operating mechanism 10 can realize the rotation of the moving contact operating mechanism 7, thereby realizing the connection or disconnection of the incoming terminal 2 and the outgoing terminal 3, and finally realizing the closing or opening of the circuit breaker.

[0041] Reference Figure 2 , Figure 3 A current release 15 is also provided in the housing 1 between the electric operating mechanism 10 and the moving contact operating mechanism 7. One end of the coil on the current release 15 is electrically connected to the incoming line terminal 2, and the other end is electrically connected to the static contact 8.

[0042] Reference Figure 3 , Figure 4 The current release 15 includes a moving iron core 16, a stationary iron core 39, a reset spring 40 and a push rod 18. The reset spring 40 is located between the stationary iron core 39 and the moving iron core 16 and applies a force to the moving iron core 16 away from the stationary iron core 39. The end of the moving iron core 16 facing the stationary iron core 39 contacts the push rod 18. When the current passing through the coil on the current release 15 is too large, the moving iron core 16 is attracted, and the moving iron core 16 approaches the stationary iron core 39 and drives the push rod 18 to extend to hit the moving contact operating mechanism 7, and the moving contact operating mechanism 7 rotates, thereby realizing the circuit breaker opening.

[0043] Reference Figure 3 , Figure 4 The current release 15 also includes a driving member 38 and a reaction spring 17 that penetrate the moving iron core 16. The driving member 38 and the push rod 18 are relatively fixedly arranged, and the reaction spring 17 applies a force to the driving member 38 away from the static iron core 39.

[0044] Reference Figure 2 , Figure 3The electric operating mechanism 10 includes a motor assembly controlled by a remote control communication module 12, a screw 20 fixedly connected to the output shaft of the motor assembly, a nut 21 threadedly connected to the screw 20, and a release member 22 movably connected to the housing 1. The motor assembly includes a motor 23 and a reduction gearbox 24. The motor 23 can be a DC brushed motor, a DC brushless motor or an AC motor; the reduction gearbox 24 can be a spur gear reduction gearbox 24 or a planetary gear reduction gearbox. The release member 22 is partially engaged with the nut 21, and the release member 22 is located on one side of the driving member 38 and can push the driving member 38 to move so that the push rod 18 can push the moving contact operating mechanism 7 to move. 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 arranged in an arc shape for sliding connection with the other end of the second connecting rod 11. The provision of the special-shaped groove 25 facilitates the movable connection between the second connecting rod 11 and the handle 4, and can simultaneously satisfy the control of the handle 4 by the electric operating mechanism 10 and manual drive.

[0045] Reference Figure 2 , Figure 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 meshed with the lower end of the nut 21. The gear 26 and the rack 27 are meshed. 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 components, which have the advantages of stable structure and high reliability.

[0046] When the circuit breaker is in the closed state, the motor assembly can drive the nut 21 to move in the direction away from the handle 4. After moving a certain distance, the nut 21 first meshes with the gear 26 and drives the gear 26 to rotate counterclockwise. The nut 21 is then separated from the gear 26, so that the rack 27 moves to the right and pushes the drive member 38 to move to realize the action of the moving contact operating mechanism 7, and the circuit breaker is opened. In this state, if the user commands the circuit breaker to be locked (that is, the nut 21 is located at the position farthest from the handle 4), the opening lock can be achieved, and the circuit breaker can no longer be manually closed. When the circuit breaker is opened due to an overcurrent fault in the line, the user cannot manually close the circuit breaker, thereby improving safety and avoiding safety hazards. If the circuit breaker is in the open state, the motor assembly can work and drive the nut 21 to move toward the handle 4. The nut 21 drives the gear 26 to rotate clockwise until the nut 21 is no longer engaged with the gear 26. In this process, the rack 27 moves away from the moving contact operating mechanism 7, and the drive member 38 is reset under the force of the reaction spring 17. At the same time, the nut 21 drives the second connecting rod 11 to push the handle 4 to rotate, thereby closing the circuit breaker. If the user commands the circuit breaker to be locked (that is, the nut 21 is located at the position closest to the handle 4), the closing lock is realized. In this state, the circuit breaker can no longer be manually opened, which can prevent some personnel from opening the circuit breaker due to misoperation. If the user does not command the motor assembly to be locked, the normal working state is: after closing the circuit through the second connecting rod 11, the motor 23 reverses, and the nut 21 moves to the free position. At this time, the handle 4 can be manually opened or closed. Among them, the free position is a specific position where the nut 21 is located between the opening and closing of the circuit breaker. When the nut 21 stops at this free position ( Figure 2 In the state of the second connecting rod 11 inserted into the special-shaped groove 25, one end is located at the upper end of the special-shaped groove 25, so that the manual opening or closing of the handle 4 can be realized. It is also necessary to mention that the matching of the gear 26 and the rack 27 is more stable. The rack 27 can be horizontally arranged on one side of the driving member 38 and directly aligned with the driving member 38, and the contact and movement of the driving member 38 and the rack 27 are more stable.

[0047] Reference Figure 5 The rack 27 is provided with a clearance groove 28 for the gear 26 to pass through, which can shorten the distance between the gear 26 and the rack 27 and reduce the space required for the gear 26 and the rack 27. At the same time, it can also meet the requirement that the gear 26 no longer meshes with the rack 27 after rotating for a period of time.

[0048] Reference Figure 2 , Figure 6A reflective element 29 is mounted on the nut 21, and a first detection point 30 for detecting the position of the reflective element 29 and corresponding to the opening of the circuit breaker, a second detection point 31 for detecting the position of the reflective element 29 and corresponding to the nut 21 at the free position, and a third detection point 32 for detecting the position of the reflective 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 cooperation of the first detection point 30, the second detection point 31 and the third detection point 32 and the reflective element 29 facilitates the provision of the position of the nut 21, thereby facilitating the remote display and differentiation of the circuit breaker status and assisting in determining the cause of the circuit breaker failure.

[0049] Reference Figure 1 , Figure 2 The housing 1 is provided with a mode selection switch 33, through which the local mode and the remote mode are selected; when the local mode is selected, the function of the electric operating mechanism 10 is in a closed state, and the circuit breaker cannot be closed or opened remotely; when the remote mode is selected, the function of the electric operating mechanism 10 is in an open state, and the circuit breaker can be closed or opened remotely. Whether the remote control function is required can be selected according to the actual situation, which is highly practical.

[0050] The specific working conditions are as follows:

[0051] When the mode selection switch 33 on the circuit breaker is selected as the local mode, the circuit breaker can be manually closed and opened by turning the handle 4. At this time, the circuit breaker cannot be remotely controlled to be closed or opened remotely.

[0052] When the mode selection switch 33 on the circuit breaker is selected as the remote mode, the electric operating mechanism 10 can control the remote closing or opening of the circuit breaker. If the motor 23 is not working, the circuit breaker still supports manual rotation of the handle 4 to achieve the closing or opening of the circuit breaker. If the motor 23 is working and the nut 21 moves to the end close to the handle 4, the circuit breaker is remotely controlled to close and the closing is locked, and it is impossible to manually open the circuit breaker by turning the handle 4; if the motor 23 is working and the nut 21 moves to the end away from the handle 4, the circuit breaker is remotely opened and the opening is locked, and it is impossible to manually close the circuit breaker by turning the handle 4.

[0053] The present application uses a remote control communication module 12 to receive external signals, and then drives the electric operating mechanism 10 to rotate the moving contact operating mechanism 7 according to the external signals, thereby realizing the connection or disconnection of the incoming terminal 2 and the outgoing terminal 3. This miniature circuit breaker has the function of remote control closing or opening, and does not require the help of an external closing and opening electric operating mechanism. It occupies less space overall, and more can be installed in the same distribution box space.

[0054] In addition, regarding the setting of the reset spring 40 and the reaction spring 17, it is necessary to explain that when the current is too large or overloaded, the moving iron core 16 is attracted to move closer to the static iron core 39, and the reset spring 40 is compressed at this time. When the current is normal, the moving iron core 16 is reset by the force of the reset spring 40, and the reaction spring 17 will not be compressed in this process. When the circuit breaker is remotely controlled to open, the release member 22 pushes the driving member 38, and the driving member 38 drives the push rod 18 and makes the push rod 18 push the moving contact operating mechanism 7. At this time, the reaction spring 17 is compressed by force. When the release member 22 no longer applies force to the driving member 38, the driving member 38 and the push rod 18 are reset by the force of the reaction spring 17. In this process, the reset spring 40 will not be compressed. The two situations rely on different spring resets, which increases the service life of the spring and ensures the instantaneous protection performance of the circuit breaker.

[0055] Embodiment 2:

[0056] Different from the first embodiment, the driving member 38 and the rack 27 are fixedly connected to each other, and the driving member 38 and the rack 27 can be integrally produced as a same component, which has the advantage of low cost.

[0057] Embodiment three:

[0058] Reference Figure 7 , Figure 8 , which is different from the first embodiment, the release member 22 is a release plate 34 rotatably connected to the housing 1, a part of the toothed structure on the release plate 34 is engaged with the nut 21, and one end of the release plate 34 away from the hinge is a cam surface 35, which can push the driving member 38 to move. Compared with the first embodiment, the release plate 34 in the third embodiment is an integral component, which is convenient for installation.

[0059] Reference Figure 7 , Figure 8 Different from the first embodiment, an abutment portion 36 is fixedly provided at one end of the iron core facing the tripping plate 34, which increases the abutment area and facilitates the tripping plate 34 to support the abutment portion 36 and drive the driving member 38 to move.

[0060] Reference Figure 7 , Figure 8, which is different from the first embodiment, a deformable limiting column 37 is fixedly connected to the housing 1. When the motor assembly drives the circuit breaker to close, the cam surface 35 of the trip plate 34 is stuck on the side of the limiting column 37 away from the driving member 38 to achieve the limiting of the trip plate 34. When the circuit breaker needs to be closed electrically, the cam surface 35 of the trip plate 34 rotates in a direction away from the driving member 38 until the cam surface 35 of the trip plate 34 rotates to the side of the limiting column 37 away from the driving member 38, and the nut 21 and the trip plate 34 are no longer engaged. It should be mentioned that only one end of the limiting column 37 is fixed to the housing 1. When the trip plate 34 rotates through the limiting column 37, the limiting column 37 can be deformed by force. When the motor assembly is not working, the nut 21 does not drive the release plate 34 to rotate, and the cam surface 35 of the release plate 34 abuts against the end of the limit column 37 away from the moving contact operating mechanism 7, which has the effect of rotating the limit column 37 and avoiding the release plate 34 from hitting the driving member 38 and causing the phenomenon of accidental release.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent miniature circuit breaker with a remote control function, comprising a housing (1), wherein the housing (1) is provided with an inlet terminal (2) and an outlet terminal (3) for connecting a line; the housing (1) is provided with a handle (4), characterized in that: The handle (4) is connected to a moving contact operating mechanism (7) via a first connecting rod (6); the handle (4) rotates and drives the moving contact operating mechanism (7) to achieve connection or disconnection between the incoming terminal (2) and the outgoing terminal (3); the handle (4) is connected to an electric operating mechanism (10) via a second connecting rod (11); the electric operating mechanism (10) includes a tripping member (22) movably connected to a housing (1); a remote control communication module (12) is provided in the housing (1); the remote control communication module (12) controls the tripping member (22) in the electric operating mechanism (10) or the handle (4) to move to achieve connection or disconnection between the moving contact operating mechanism (7) and the outgoing terminal (3). ) action, thereby realizing the connection or disconnection of the incoming terminal (2) and the outgoing terminal (3); a current release (15) is also arranged in the housing (1), and the current release (15) comprises a moving iron core (16), a stationary iron core (39), a reset spring (40) and a push rod (18), wherein the reset spring (40) is located between the stationary iron core (39) and the moving iron core (16) and applies a force to the moving iron core (16) to move away from the stationary iron core (39); when the current passing through the current release (15) is too large, the moving iron core (16) approaches the stationary iron core (39) and drives the push rod (18) to extend to hit the moving contact operating mechanism (7); the current release (15) also The invention comprises a driving member (38) and a reaction spring (17) which are inserted through a moving iron core (16); the driving member (38) and the push rod (18) are fixedly arranged relative to each other, and the reaction spring (17) applies a force to the driving member (38) to move away from the static iron core (39); the electric operating mechanism (10) also comprises a motor assembly controlled by a remote control communication module (12), a screw (20) fixedly connected to the output shaft of the motor assembly, and a nut (21) threadedly connected to the screw (20); the release member (22) is meshed with the nut (21), and the nut (21) is connected to the handle (4) through a second connecting rod (11); the release member (22) is located at The drive member (38) is located on one side of the drive member (38) and is capable of pushing the drive member (38) to move so that the push rod (18) pushes the moving contact operating mechanism (7) to operate, and the incoming line terminal (2) and the outgoing line terminal (3) are disconnected; 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 meshed with the nut (21), the gear (26) is meshed with the rack (27), one end of the rack (27) is located on one side of the drive member (38) and is capable of pushing the drive member (38) to move; the drive member (38) and the rack (27) are two independent components, or the two are fixed to each other.

2. The intelligent miniature circuit breaker with remote control function according to claim 1, characterized in that: The rack (27) is provided with a clearance groove (28) for the gear (26) to pass through.

3. The intelligent miniature circuit breaker with remote control function according to claim 1, characterized in that: The release member (22) comprises a release plate (34) rotatably connected to the housing (1), a partial toothed structure on the release plate (34) meshing with the nut (21), and an end of the release plate (34) away from the hinge is a cam surface (35), and the cam surface (35) can push the driving member (38) to move.

4. The intelligent miniature circuit breaker with remote control function according to claim 3, characterized in that: An abutment portion (36) is fixedly provided on one end of the driving member (38) facing the release plate (34).

5. The intelligent miniature circuit breaker with remote control function according to claim 3, characterized in that: A deformable limiting column (37) is fixedly connected to the housing (1); 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 column (37) away from the driving member (38) to achieve limiting of the trip plate (34).

6. The intelligent miniature circuit breaker with remote control function according to claim 1, characterized in that: 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) for slidingly matching with the second connecting rod (11).

7. The intelligent miniature circuit breaker with remote control function according to claim 1, characterized in that: A reflective element (29) is mounted on the nut (21), and a first detection point (30) for detecting the position of the reflective element (29) and corresponding to the opening of the circuit breaker, a second detection point (31) for detecting the position of the reflective element (29) and corresponding to the nut (21) being in a free position, and a third detection point (32) for detecting the position of the reflective element (29) and corresponding to the closing of the circuit breaker are respectively arranged in the housing (1).

8. The intelligent miniature circuit breaker with remote control function according to claim 1, characterized in that: The housing (1) is provided with a mode selection switch (33), and a local mode and a remote mode are selected by means of the mode selection switch (33); when the local mode is selected, the function of the electric operating mechanism (10) is in an off state, and the circuit breaker cannot be closed or opened by remote control at this time; when the remote mode is selected, the function of the electric operating mechanism (10) is in an on state, and the circuit breaker can be closed or opened by remote control at this time.

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