CN114360977B - Circuit breaker capable of being remotely controlled - Google Patents
Circuit breaker capable of being remotely controlled Download PDFInfo
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- CN114360977B CN114360977B CN202210229142.XA CN202210229142A CN114360977B CN 114360977 B CN114360977 B CN 114360977B CN 202210229142 A CN202210229142 A CN 202210229142A CN 114360977 B CN114360977 B CN 114360977B
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Abstract
The invention discloses a circuit breaker capable of being remotely controlled, wherein the circuit breaker capable of being remotely controlled comprises: the device comprises a shell, a driving mechanism, a static contact and an opening and closing brake assembly. The shell is internally provided with an installation cavity; the driving mechanism is arranged in the mounting chamber and comprises a power assembly, a first transmission connecting rod, a rotating piece and a second transmission connecting rod which are connected in sequence, and the rotating piece is rotatably arranged in the mounting chamber; the static contact is arranged on the side wall of the mounting chamber and is far away from the driving mechanism; the switching-on and switching-off assembly is rotatably arranged in the mounting cavity and is connected with the second transmission connecting rod, the switching-on and switching-off assembly is provided with a movable contact, the movable contact and the fixed contact are separated from each other through rotation of the switching-on and switching-off assembly, the circuit breaker capable of being remotely controlled performs switching-on or the movable contact and the fixed contact are mutually abutted, and the circuit breaker capable of being remotely controlled performs switching-on. According to the technical scheme, the built-in driving mechanism realizes remote control, and meanwhile, the internal structure of the circuit breaker is more compact, so that the circuit breaker is convenient to miniaturize.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker capable of being remotely controlled.
Background
The remote device and the circuit breaker mechanism have the design scheme that a set of remote control device is installed outside the circuit breaker body in a matched mode, and the function of opening and closing the switch of the circuit breaker is achieved by remotely controlling the transmission rod through the remote control device.
When the miniature circuit breaker is remotely controlled to close and open the brake, the worm is driven by the motor to drive the reduction gear and drive the transmission gear, and the circuit breaker is remotely controlled to close and open the brake in a mode that the transmission gear is coupled to the circuit breaker operating mechanism. And the motor is used for controlling the mechanism to be switched on and off, so that a lot of space is needed for placing parts such as the motor, the gear and the like. Inside placing into the circuit breaker with motor operating device, need enlarge original structure, can lead to whole volume, size grow, the usage is restricted, is unfavorable for the circuit breaker miniaturization promptly.
Disclosure of Invention
The invention mainly aims to provide a circuit breaker capable of being remotely controlled, and aims to enable the internal structure of the circuit breaker to be more compact while a built-in driving mechanism is used for realizing remote control, so that the circuit breaker can be conveniently miniaturized.
In order to achieve the above object, the present invention provides a remotely controllable circuit breaker, comprising: the device comprises a shell, a driving mechanism, a static contact and an opening and closing brake assembly. The shell is internally provided with an installation cavity; the driving mechanism is arranged in the mounting cavity and comprises a power assembly, a first transmission connecting rod, a rotating piece and a second transmission connecting rod which are sequentially connected, and the rotating piece is rotatably arranged in the mounting cavity; the static contact is arranged on the side wall of the mounting chamber and is far away from the driving mechanism; the switching-on and switching-off assembly is rotatably arranged in the mounting cavity and connected with the second transmission connecting rod, the switching-on and switching-off assembly is provided with a movable contact, the movable contact and the fixed contact are separated from each other through rotation of the switching-on and switching-off assembly, the remotely-controllable circuit breaker performs switching-on or performs switching-off through mutual abutting of the movable contact and the fixed contact, and the remotely-controllable circuit breaker performs switching-on.
Optionally, the power assembly comprises a magnetic yoke, a first coil, a second coil and a magnetic member; the magnetic yoke is provided with a first cavity and a second cavity which are mutually independent, and a communication through hole is arranged between the first cavity and the second cavity; the first coil is arranged in the first cavity, the second coil is arranged in the second cavity, and the magnetic part penetrates through the first coil, the communication through hole and the second coil and is connected with the first transmission connecting rod; when the first coil is electrified, the magnetic part moves towards the direction of the first coil, and when the second coil is electrified, the magnetic part moves towards the direction of the second coil.
Optionally, a mounting hole is formed in one end of the magnetic member, and the first transmission link is rotatably disposed in the mounting hole.
Optionally, the magnetic part has a first end face close to the first transmission connecting rod and a first side face connected with the first end face, the mounting hole runs through the first side face, the first side face is provided with a limiting groove, two ends of the limiting groove respectively run through the first end face and the hole wall face of the mounting hole, the limiting groove is close to the direction of the first end face and is arranged in a gradually expanding mode, the first transmission connecting rod penetrates through the limiting groove to be limited by the limiting groove, and the rotating angle of the first transmission connecting rod is limited by the limiting groove.
Optionally, the first coil is a closing coil, and the second coil is an opening coil.
Optionally, the driving mechanism is further provided with a reset piece, the first chamber is provided with the reset piece, one end of the reset piece abuts against the side wall of the first chamber, and the other end of the reset piece abuts against the magnetic piece.
Optionally, the second chamber is provided with the reset piece, one end of the reset piece abuts against the side wall of the second chamber, and the other end of the reset piece abuts against the magnetic piece.
Optionally, the installation cavity is further provided with a first torsion spring, the first torsion spring is arranged between the rotating part and the casing, one end of the first torsion spring is abutted to the casing, and the other end of the first torsion spring is abutted to the rotating part.
Optionally, the switching-on/off assembly comprises a jump buckle, a lock catch and a contact structure, and the contact structure is provided with the moving contact; the installation cavity is provided with a rotating shaft, one end of the jump buckle is in transmission connection with the second transmission connecting rod, the other end of the jump buckle is in rotation connection with the contact structure, and the lock buckle and the contact structure are both rotatably arranged on the rotating shaft; the lock catch is provided with a limiting part, the side wall of the contact structure can movably abut against the limiting part, and the movable contact and the static contact are separated by abutting against and pushing the contact structure through the limiting part; the rotating shaft is provided with a second torsion spring, one end of the second torsion spring is abutted against the contact structure, and the other end of the second torsion spring is abutted against the lock catch; the installation cavity is further provided with a tension spring, one end of the tension spring is connected with the shell, the other end of the tension spring is connected with the contact structure, and the tension spring enables the movable contact of the contact structure to move towards the direction far away from the fixed contact.
Optionally, the opening and closing assembly is provided with a trip portion, the mounting chamber is provided with an overload protection mechanism, the overload protection mechanism comprises a thermal bending member extending towards the trip portion, when an overload occurs in a circuit switched on by the remote-controlled circuit breaker, the thermal bending member bends, and the thermal bending member pulls the trip portion to move towards a direction far away from the fixed contact, so that the movable contact and the fixed contact are separated.
Optionally, the latch is provided with a pushing portion, the mounting cavity is provided with a short-circuit protection mechanism, the short-circuit protection mechanism includes a push rod extending toward the pushing portion, and when the circuit is short-circuited, the short-circuit protection mechanism drives the push rod to push the pushing portion, so that the movable contact and the stationary contact are separated.
Optionally, the remotely controllable circuit breaker further includes an arc extinguishing device, an arc striking plate is led out of the arc extinguishing device, and the arc striking plate extends along the side wall of the installation cavity and is electrically connected with the switching-on/off assembly.
Optionally, the housing is provided with a connecting piece, the connecting piece is electrically connected with the switching on/off brake assembly and led out of the housing, and the connecting piece can be welded with the PCB.
According to the technical scheme, the driving mechanism is arranged in the installation cavity in the shell, and the motion mode of the power assembly in the driving mechanism is changed remotely, so that the function of remotely controlling the circuit breaker is realized. Specifically, actuating mechanism is including the power component who connects gradually, first transmission connecting rod, rotate piece and second transmission connecting rod, power component output power, directly drive the displacement of first transmission connecting rod, the removal of first transmission connecting rod turns into the rotation of rotating the piece, the rotation of rotating the piece drives second transmission connecting rod and takes place the displacement, the second transmission connecting rod is connected and is closed the separating brake subassembly, the displacement of second transmission connecting rod makes the cooperation state of closing the separating brake subassembly change, and then lead to locating the movable contact on closing the separating brake subassembly and the stationary contact of locating the installation cavity lateral wall and take place alternate segregation or mutual butt, thereby realize the combined floodgate of circuit breaker or the state of separating brake. In addition, the compact transmission cooperation of the first transmission connecting rod, the rotating part and the second transmission connecting rod is more suitable for a small-sized short-circuiting device, and the compact transmission matching device has the effects of simple structure and stable transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a remotely controllable circuit breaker (closing state) according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a remotely controllable circuit breaker (open state) according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of a power assembly of a remotely controllable circuit breaker according to the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of a power assembly of the remotely controllable circuit breaker of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of a magnetic member of the remote controllable circuit breaker according to the present invention;
fig. 6 is a schematic structural diagram of a driving mechanism and a switching-on/off assembly of the remotely controllable circuit breaker according to the present invention;
fig. 7 is a schematic diagram of the internal structure of the remotely controllable circuit breaker of the present invention;
fig. 8 is a schematic structural diagram of an opening/closing assembly of the remotely controllable circuit breaker according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | |
| 2 | |
21 | |
| 211 | |
212 | |
| 213 | |
214 | |
| 215 | |
216 | Limiting |
| 217 | |
218 | Communicating through- |
| 22 | First |
23 | |
| 24 | Second |
25 | First torsion spring |
| 26 | |
27 | |
| 3 | |
4 | Switching on/off |
| 41 | |
42 | Jump |
| 43 | |
431 | Limiting |
| 44 | |
45 | |
| 46 | |
47 | Tripping |
| 48 | |
49 | |
| 5 | |
51 | |
| 6 | Short- |
61 | |
| 7 | Arc extinguishing |
71 | Arc |
| 8 | Connecting piece |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a circuit breaker capable of being remotely controlled.
Referring to fig. 1 to 8, in an embodiment of the present invention, the remotely controllable circuit breaker includes: the device comprises a shell 1, a driving mechanism 2, a fixed contact 3 and an opening and closing brake assembly 4. The interior of the shell 1 is provided with a mounting chamber 11; the driving mechanism 2 is arranged in the mounting chamber 11 and comprises a power assembly 21, a first transmission connecting rod 22, a rotating part 23 and a second transmission connecting rod 24 which are connected in sequence, and the rotating part 23 is rotatably arranged in the mounting chamber 11; the static contact 3 is arranged on the side wall of the mounting chamber 11 and is far away from the driving mechanism 2; the switching-on/off assembly 4 is rotatably disposed in the mounting chamber 11 and connected to the second transmission link 24, the switching-on/off assembly 4 is provided with a movable contact 41, the movable contact 41 and the fixed contact 3 are separated from each other by rotation of the switching-on/off assembly 4, the remotely controllable circuit breaker performs switching-off, or the movable contact 41 and the fixed contact 3 are abutted against each other, and the remotely controllable circuit breaker performs switching-on.
According to the technical scheme, the driving mechanism 2 is arranged in the mounting chamber 11 in the shell 1, and the motion mode of the power assembly 21 in the driving mechanism 2 is changed remotely, so that the function of remotely controlling the circuit breaker is realized. Specifically, the driving mechanism 2 includes a power assembly 21, a first transmission link 22, a rotation member 23 and a second transmission link 24 that are connected in sequence, the power assembly 21 outputs power, and directly drives the first transmission link 22 to displace, the movement of the first transmission link 22 is converted into the rotation of the rotation member 23, the rotation of the rotation member 23 drives the second transmission link 24 to displace, the second transmission link 24 is connected to the switching-on/off assembly 4, the displacement of the second transmission link 24 changes the matching state of the switching-on/off assembly 4, and then the movable contact 41 on the switching-on/off assembly 4 and the stationary contact 3 on the side wall of the installation chamber 11 are separated from or abutted against each other, so as to achieve the switching-on or switching-off state of the circuit breaker. In addition, the compact transmission matching of the first transmission link 22, the rotating part 23 and the second transmission link 24 is more suitable for a small short-circuit device, and has the effects of simple structure and stable transmission.
Referring to fig. 3 and 4, the power assembly 21 includes a yoke 211, a first coil 212, a second coil 213, and a magnetic member 214; the magnetic yoke 211 is provided with a first chamber and a second chamber which are independent from each other, and a communication through hole 218 is arranged between the first chamber and the second chamber; the first coil 212 is disposed in the first chamber, the second coil 213 is disposed in the second chamber, and the magnetic member 214 is disposed through the first coil 212, the communication through hole 218, and the second coil 213, and is connected to the first transmission link 22.
In the present embodiment, referring to fig. 5, the magnetic member 214 is in the form of a sheet. The magnetic member 214 in the form of a sheet has a smaller volume while ensuring normal movement in the electromagnetic field, so that the entire drive mechanism 2 has a relatively compact arrangement. Although the magnetic push rod 61 is also feasible in the present embodiment, the magnetic push rod 61 may rotate during the movement, which is likely to cause unstable and unreliable transmission. The shape of the magnetic member 214 and the through hole 218 is matched to prevent the magnetic member 214 from rotating circumferentially, i.e. to limit the freedom of magnetism, so that the magnetic member 214 can only shuttle back and forth between the first coil 212, the through hole 218 and the second coil 213.
The magnetic member 214 has two moving directions, when the first coil 212 is energized, the magnetic member 214 moves toward the first coil 212, and when the second coil 213 is energized, the magnetic member 214 moves toward the second coil 213.
The magnetic member may be an object having magnetism itself, or an object which is not magnetized and can be attracted by a magnetic field itself.
Specifically, a mounting hole 215 is formed at one end of the magnetic member 214, and the first transmission link 22 is rotatably disposed in the mounting hole 215, so as to convert the displacement of the magnetic member 214 into the displacement of the first transmission link 22. In one embodiment, a mounting hole 215 is formed at one end of the magnetic member 214, and the first transmission link 22 is rotatably disposed in the mounting hole 215.
In another embodiment, the magnetic member 214 has a first end surface 26 close to the first transmission link 22 and a first side surface 27 connected to the first end surface 26, the mounting hole 215 penetrates through the first side surface 27, the first side surface 27 is concavely provided with a limiting groove 216 having two ends respectively penetrating through the first end surface 26 and a hole wall surface of the mounting hole 215, the limiting groove 216 is arranged in a gradually expanding manner in a direction close to the first end surface 26, and the first transmission link 22 is inserted into the limiting groove 216 to limit a rotation angle of the first transmission link 22 through the limiting groove 216. The rotation angle of the first transmission link 22 is limited by the limiting groove 216 to prevent the rotation angle of the first transmission link 22 from being too large to damage the transmission path of the entire link mechanism. The first transmission link 22 is rotatably disposed in the mounting hole 215 and is connected to the rotating member 23 via the stopper groove 216. It should be understood that, in the embodiment, the characteristic that the over-dead point of the four-bar linkage mechanism can be kept at the closing position is utilized, the reliable closing and opening operation is performed, and the design of the four-bar linkage mechanism can efficiently utilize the space inside the installation chamber 11, the utilization rate of the space can be further improved, and the four-bar linkage mechanism is suitable for the purpose of miniaturizing the circuit breaker.
In one embodiment, the first coil 212 is a closing coil, and the second coil 213 is an opening coil. Specifically, by adding a voltage signal to each of the closing coil and the opening coil, the coils are charged and generate an electromagnetic field, and the magnetic member 214 receives a magnetic force in the electromagnetic field and is displaced by the magnetic force. In this embodiment, the first coil 212 is a closing coil, the second coil 213 is an opening coil, and the number of turns of the first coil 212 is greater than that of the second coil 213. It will be appreciated that in a circuit breaker, the force required to close the switch is generally greater than to open the switch. The number of turns of the closing coil is greater than that of the opening coil, so that the closing force is also greater. However, the design is not limited thereto, and in other embodiments, it is also feasible that the first coil 212 is an opening coil and the second coil 213 is a closing coil, but the number of turns of the coils and the moving direction of the magnetic element 214 also need to be adjusted accordingly.
In the present embodiment, the driving structure has a reset function. Specifically, referring to fig. 3, the first chamber is further provided with a reset member 217, one end of the reset member 217 abuts against the side wall of the first chamber, and the other end abuts against the magnetic member 214. In another embodiment, the second chamber is provided with the reset element 217, one end of the reset element 217 abuts against the sidewall of the second chamber, and the other end abuts against the magnetic element 214. In yet another embodiment, the first and second chambers are provided with a reset 217 to enable the magnetic member 214 to have a tendency to reset automatically.
It should be noted that the driving mechanism and the switching-on/off assembly may be formed as a planar four-bar mechanism, and when the movable contact 41 abuts against the stationary contact 3, the circuit breaker capable of being remotely controlled is in a switching-on state, and when the link of the planar four-bar mechanism crosses over the dead point position and then has a holding force, and when the planar four-bar mechanism remains still, the movable contact 41 and the stationary contact 3 are held in an abutting state. And the closing state of the circuit breaker capable of being remotely controlled cannot be influenced no matter whether the closing coil is electrified or not. When the opening coil is operated, and the movable contact 41 is separated from the stationary contact 3 by the reset member 217, the remotely controllable circuit breaker becomes an opening state.
In another embodiment, the installation chamber 11 is further provided with a first torsion spring 25, the first torsion spring 25 is disposed between the rotating member 23 and the housing 1, one end of the first torsion spring 25 abuts against the housing 1, and the other end abuts against the rotating member 23. The first torsion spring 25 is arranged to enable the rotating member 23 to have a reset function, and due to the rotatable characteristic of the rotating member 23, after the rotating member 23 rotates, the torsion spring abutted to the rotating member 23 accumulates elastic potential energy, so that the rotating member 23 has a movement trend of restoring an original state, and when the power assembly 21 loses kinetic energy, the rotating member 23 can restore the original position under the elastic force of the first torsion spring 25, so that the reset of the rotating member 23 is realized.
Specifically, referring to fig. 6, 7 and 8, the switching assembly 4 includes a tripping 42, a locking buckle 43 and a contact structure 44, and the contact structure 44 is provided with the moving contact 41. The installation cavity 11 is provided with a rotating shaft 49, one end of the jump buckle 42 is in transmission connection with the second transmission connecting rod 24, the other end of the jump buckle is in rotation connection with the contact structure 44, and the lock buckle 43 and the contact structure 44 are both rotatably arranged on the rotating shaft 49; the latch 43 is provided with a limiting portion 431, a side wall of the contact structure 44 can movably abut against the limiting portion 431, and the contact structure 44 is abutted and pushed by the limiting portion 431 so that the movable contact 41 is separated from the stationary contact 3.
The rotating shaft 49 is provided with a second torsion spring 45, one end of the second torsion spring 45 is connected with the contact structure 44 in an abutting mode, and the other end of the second torsion spring 45 is connected with the lock catch 43 in an abutting mode. Since the contact structure 44 and the latch 43 are rotatably disposed on the rotating shaft 49, when the contact structure 44 and the latch 43 rotate relatively, the contact structure 44 and the latch 43 respectively abut against two ends of the second torsion spring 45, and the second torsion spring 45 accumulates elastic potential energy, the second torsion spring 45 can make the contact structure 44 and the latch 43 have a tendency of moving to return, and when the power assembly 21 is powered off, the second torsion spring 45 releases the accumulated elastic potential energy, so that the contact structure 44 and the latch 43 both rotate and return to an initial state.
The installation chamber 11 is further provided with a tension spring 46, one end of the tension spring 46 is connected with the housing 1, the other end of the tension spring 46 is connected with the contact structure 44, and the tension spring 46 can enable the movable contact 41 of the contact structure 44 to move in a direction away from the fixed contact 3.
In an embodiment, the opening and closing assembly 4 is provided with a trip portion 47, the mounting chamber 11 is provided with an overload protection mechanism 5, the overload protection mechanism 5 includes a thermal bending member 51 extending toward the trip portion 47, when a component in the line is overloaded, the thermal bending member 51 bends, and the thermal bending member 51 pulls the trip portion 47 to move away from the stationary contact 3, so that the movable contact 41 and the stationary contact 3 are separated. In this embodiment, the thermal bending member 51 is a metal sheet with multiple layers, each layer of metal sheet has different degrees of thermal bending, and the metal sheet far from the switching element is the largest in degree of thermal bending, when the main circuit is overloaded, the temperature of the thermal bending member 51 rises and bends toward the direction far from the switching element 4, and the free end of the thermal bending member 51 bends and drives the trip portion 47 on the latch 43 of the switching element 4 to move, so as to drive the movable contact 41 of the contact structure 44 of the switching element 4 to separate from the stationary contact 3 on the side wall of the triggering portion, thereby implementing the overload protection function.
In an embodiment, the latch 43 is provided with a pushing portion 48, the mounting chamber 11 is provided with a short-circuit protection mechanism 6, the short-circuit protection mechanism 6 includes a push rod 61 extending toward the pushing portion 48, and when a line is short-circuited, the short-circuit protection mechanism 6 drives the push rod 61 to push the pushing portion 48, so that the movable contact 41 and the stationary contact 3 are separated. Specifically, the short-circuit protection mechanism 6 is configured to separate the movable contact 41 and the stationary contact 3 by pushing the push rod 61 against the opening/closing component 4, thereby achieving the disconnection of the circuit. In this embodiment, the short-circuit protection mechanism 6 is magnetically driven, when the main circuit is short-circuited, the short-circuit protection mechanism 6 works, and when the main circuit is powered on, the internal coil generates a magnetic field and drives the push rod 61 to displace and push the abutting portion 48 of the latch 43, so that the latch 43 rotates, the rotation of the latch 43 drives the contact structure 44 abutting against the latch 43 to rotate together, and the movable contact 41 of the rotated contact structure 44 is separated from the stationary contact 3 located on the side wall of the trigger portion, thereby separating the movable contact 41 from the stationary contact 3, and realizing short-circuit protection. However, the design is not limited thereto, and in other embodiments, the driving of the push rod 61 may be but not limited to electromagnetic pushing, and may also be other mechanical structures, such as cam rod, gear set, and the like. The push rod 61 may be a magnetic object or an object that is not magnetic but attracted by a magnetic field.
In an embodiment, the remotely controllable circuit breaker further includes an arc-extinguishing device 7, and an arc tab 71 is led out from the arc-extinguishing device 7, and the arc tab 71 extends along a side wall of the mounting chamber 11 and is electrically connected to the opening and closing assembly 4. However, the design is not limited thereto, and in other embodiments, the arc striking plate 71 may also extend along the sidewall of the triggering portion and be electrically connected to the stationary contact. The arc striking plate 71 is provided to achieve an arc extinguishing effect by guiding the arc generated by the striking part into the position of the arc extinguishing device 7. The influence of electric arc in this embodiment on equipment is solved to the security performance of circuit breaker has been improved.
Referring to fig. 7, the housing 1 is provided with a connecting member 8, the connecting member 8 is electrically connected to the switching assembly 4 and led out of the housing 1, and the connecting member 8 can be welded to a PCB. In this embodiment, the circuit breaker capable of being remotely controlled is connected with a PCB, and the circuit on-off condition of the PCB is controlled by the switching-on and switching-off functions of the circuit breaker. However, the design is not limited thereto, and in other embodiments, the connecting member 8 led out of the housing 1 can be directly electrically connected with wires and other devices.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A remotely controllable circuit breaker, comprising:
a housing having an installation chamber therein;
the driving mechanism is arranged in the installation cavity and comprises a power assembly, a first transmission connecting rod, a rotating piece and a second transmission connecting rod which are sequentially connected, and the rotating piece is rotatably arranged in the installation cavity;
the static contact is arranged on the side wall of the mounting chamber and is far away from the driving mechanism; and
the switching-on and switching-off component is rotatably arranged in the mounting cavity and is connected with the second transmission connecting rod, and the switching-on and switching-off component is provided with a moving contact;
the movable contact and the fixed contact can be separated from each other through the rotation of the switching-on and switching-off assembly, the remote-controlled circuit breaker performs switching-off, or the movable contact and the fixed contact are mutually abutted, and the remote-controlled circuit breaker performs switching-on;
the power assembly comprises a magnetic yoke, a first coil, a second coil and a magnetic piece;
the magnetic yoke is provided with a first cavity and a second cavity which are independent from each other, and a communication through hole is formed between the first cavity and the second cavity; the first coil is arranged in the first cavity, the second coil is arranged in the second cavity, and the magnetic part penetrates through the first coil, the communication through hole and the second coil and is connected with the first transmission connecting rod;
when the first coil is electrified, the magnetic part moves towards the direction of the first coil, and when the second coil is electrified, the magnetic part moves towards the direction of the second coil;
one end of the magnetic part is provided with a mounting hole, and the first transmission connecting rod is rotatably arranged in the mounting hole;
the magnetic part is provided with a first end face close to the first transmission connecting rod and a first side face connected with the first end face, the mounting hole penetrates through the first side face, the first side face is concavely provided with limiting grooves, two ends of the limiting grooves penetrate through the first end face and the hole wall face of the mounting hole respectively, the limiting grooves are close to the first end face in the direction, the first transmission connecting rod penetrates through the limiting grooves to be limited by the limiting grooves, and the rotating angle of the first transmission connecting rod is limited by the limiting grooves.
2. The remotely controllable circuit breaker of claim 1, wherein said first coil is a closing coil and said second coil is an opening coil.
3. The remotely controllable circuit breaker according to claim 2, wherein said drive mechanism is further provided with a reset member, said first chamber is provided with said reset member, one end of said reset member abuts against a side wall of said first chamber, and the other end abuts against said magnetic member; and/or
The second chamber is equipped with the piece that resets, the one end butt of the piece that resets the lateral wall of second chamber, the other end butt the magnetism piece.
4. The remotely controllable circuit breaker as recited in claim 1, wherein said mounting chamber is further provided with a first torsion spring, said first torsion spring being disposed between said rotatable member and said housing, one end of said first torsion spring abutting said housing and the other end abutting said rotatable member.
5. The remotely controllable circuit breaker of claim 1, wherein said switching assembly comprises a trip, a latch, and a contact structure, said contact structure being provided with said movable contact;
the installation cavity is provided with a rotating shaft, one end of the jump buckle is in transmission connection with the second transmission connecting rod, the other end of the jump buckle is in rotation connection with the contact structure, and the lock buckle and the contact structure are both rotatably arranged on the rotating shaft; the lock catch is provided with a limiting part, the side wall of the contact structure can movably abut against the limiting part, and the movable contact and the static contact are separated by abutting against and pushing the contact structure through the limiting part;
the rotating shaft is provided with a second torsion spring, one end of the second torsion spring is abutted against the contact structure, and the other end of the second torsion spring is abutted against the lock catch; the installation cavity is further provided with a tension spring, one end of the tension spring is connected with the shell, the other end of the tension spring is connected with the contact structure, and the tension spring enables the movable contact of the contact structure to move towards the direction far away from the fixed contact.
6. The remotely controllable circuit breaker according to claim 5, wherein said switching assembly is provided with a trip portion, said mounting chamber is provided with an overload protection mechanism, said overload protection mechanism comprises a thermal flexure extending toward said trip portion, said thermal flexure bends when an overload occurs in an electrical circuit completed by said remotely controllable circuit breaker, said thermal flexure pulls said trip portion away from said stationary contact to separate said movable contact from said stationary contact; and/or
The lock catch is provided with an abutting part, the installation cavity is provided with a short-circuit protection mechanism, the short-circuit protection mechanism comprises a push rod which extends towards the abutting part, and when a circuit is short-circuited, the short-circuit protection mechanism drives the push rod to abut against the abutting part so as to separate the movable contact from the fixed contact.
7. The remotely controllable circuit breaker of claim 1, further comprising an arc quenching device having a tab extending from the arc quenching device, the tab extending along a sidewall of the mounting chamber and electrically connected to the closing and opening assembly.
8. The remotely controllable circuit breaker according to claim 1, wherein said housing is provided with a connector electrically connected to said opening and closing assembly and led out to the outside of said housing, said connector being solderable to a PCB board.
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| CN202210229142.XA CN114360977B (en) | 2022-03-10 | 2022-03-10 | Circuit breaker capable of being remotely controlled |
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| CN202210229142.XA CN114360977B (en) | 2022-03-10 | 2022-03-10 | Circuit breaker capable of being remotely controlled |
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| CN114360977B true CN114360977B (en) | 2022-07-05 |
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| CN114883156B (en) * | 2022-07-12 | 2022-10-04 | 东莞市中汇瑞德电子股份有限公司 | Built-in circuit breaker of electromagnetic operating mechanism |
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| EP3905296A4 (en) * | 2018-12-28 | 2022-08-24 | Zhejiang Chint Electrics Co., Ltd. | Miniature circuit breaker |
| CN213242437U (en) * | 2020-06-25 | 2021-05-18 | 浙江正泰电器股份有限公司 | Circuit breaker |
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| CN105914110A (en) * | 2016-06-20 | 2016-08-31 | 浙江天正电气股份有限公司 | Small-sized circuit breaker |
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| CN114360977A (en) | 2022-04-15 |
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