CN108922837B

CN108922837B - Dynamic balance electromagnetic trip switch and circuit breaker

Info

Publication number: CN108922837B
Application number: CN201810949486.1A
Authority: CN
Inventors: 陈振明; 李欣; 陈浩源
Original assignee: XIAMEN TAIHANG TECHNOLOGY CO LTD
Current assignee: XIAMEN TAIHANG TECHNOLOGY CO LTD
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2023-09-01
Anticipated expiration: 2038-08-20
Also published as: CN108922837A

Abstract

The invention discloses a dynamic balance electromagnetic trip switch and a circuit breaker, and relates to the technical field of electricity safety. The dynamic balance electromagnetic trip switch comprises an electromagnet mechanism, a mounting bracket, an armature assembly and a turning plate assembly. The counterweight piece is connected with the rotating frame and is arranged on one side, far away from the opening, of the first rotating shaft, the counterweight piece can keep balance with the rotating frame, the turning plate body is rotationally connected with the electromagnet mechanism through the second elastic piece, the rotating frame is arranged between the electromagnet mechanism and the turning plate body and is abutted to the turning plate body, and the turning plate body is provided with a clamping hook which is clamped with the opening. Compared with the prior art, the dynamic balance electromagnetic trip switch provided by the invention has the advantages that the dynamic balance state of the rotating piece can be kept due to the adoption of the weight piece connected with the rotating piece and the electromagnet mechanism magnetically connected with the rotating piece, the situation of mistaken power failure under external vibration is prevented, and the sensitivity is high, and the practicability and the efficiency are high.

Description

Dynamic balance electromagnetic trip switch and circuit breaker

Technical Field

The invention relates to the technical field of electricity safety, in particular to a dynamic balance electromagnetic trip switch and a circuit breaker.

Background

A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, and the division of a high-voltage boundary line and a low-voltage boundary line is fuzzy, and is generally called as a high-voltage electrical appliance with the voltage of more than 3 kV. The circuit breaker can be used for distributing electric energy, starting the asynchronous motor infrequently, protecting a power line, the motor and the like, automatically cutting off the circuit when serious overload or short circuit and other faults occur, has the functions equivalent to the combination of a fuse type switch, an over-under-heating relay and the like, and generally does not need to change parts after breaking fault current.

Power distribution is now an extremely important element in the generation, delivery and use of electricity, and in power distribution systems, circuit breakers are an essential safety protection facility. The inventor researches and discovers that the conventional circuit breaker has the defects of complex structure, low circuit breaking efficiency, low sensitivity, easy error power failure caused by external vibration interference and incapability of accurately realizing circuit breaking work.

In view of this, it is important to design and manufacture a dynamic balance electromagnetic trip switch and a circuit breaker capable of preventing erroneous power failure, especially in the circuit breaker production.

Disclosure of Invention

The invention aims to provide a dynamic balance electromagnetic trip switch which has a simple structure, can keep the dynamic balance state of internal trip, prevents the situation of false power failure under external vibration, and has high sensitivity, practicability and high efficiency.

The invention further aims to provide the circuit breaker which is simple in structure, capable of enabling the internal tripping to keep a dynamic balance state, high in sensitivity, practical, efficient and good in user experience, and the situation of mistaken power failure under external vibration is prevented.

The invention is realized by adopting the following technical scheme.

The utility model provides a dynamic balance electromagnetism tripping switch, including electromagnet mechanism, the installing support, armature subassembly and board turnover assembly, electromagnet mechanism installs in the installing support, electromagnet mechanism is used for with external power or electrical apparatus intercommunication, armature subassembly installs in the one end of installing support, board turnover assembly installs in the other end of installing support, armature subassembly includes first elastic component, first axis of rotation, rotating turret and counterweight piece, first axis of rotation installs in the rotating turret, and form the opening with the rotating turret combination, first elastic component cover is located outside the first axis of rotation, the one end and the rotating turret butt of first elastic component, the other end and installing support butt, counterweight piece is connected with the rotating turret, and set up in one side that the opening was kept away from to first axis of rotation, the counterweight piece can keep balance with the rotating turret, board turnover assembly includes second elastic component and board turnover body, the second elastic component cover is located outside the board turnover body, the turnover body rotates with electromagnet mechanism through the second elastic component to be connected, the rotating turret is arranged in between electromagnet mechanism and the turnover body, and with the turnover body butt, the turnover body is provided with the pothook, pothook and opening joint, electromagnet mechanism is used for producing magnetic force when electric current surpasses the default to adsorb the frame, so that the opening is kept away from to the opening to the electromagnet mechanism.

Further, the rotating frame comprises a first connecting part, a second connecting part and an abutting part, one end of the second connecting part is connected with the abutting part, the other end of the second connecting part is connected with the counterweight, one end of the first rotating shaft penetrates through the first connecting part and is rotationally connected with the mounting bracket, the other end of the first rotating shaft penetrates through the second connecting part and is rotationally connected with the mounting bracket, and the first rotating shaft, the first connecting part, the abutting part and the second connecting part are combined to form an opening.

Further, the counterweight piece comprises a fixed shaft and a counterweight block, the counterweight block is sleeved outside the fixed shaft and fixedly connected with the fixed shaft, and the fixed shaft is connected with the second connecting part.

Further, the balancing weight is cylindric, and the balancing weight supports with the second connecting portion and holds.

Further, the rotating frame further comprises a limiting part, the limiting part is connected to one end, away from the abutting part, of the first connecting part, and the limiting part is abutted with the mounting bracket.

Further, turn over the board body and include second axis of rotation and roll-over stand, the second axis of rotation is installed in the roll-over stand, roll-over stand and rotating turret butt, and the roll-over stand is provided with the pothook, and outside the second axis of rotation was located to the second elastic component cover, the one end and the roll-over stand butt of second elastic component, the other end and electromagnet mechanism butt.

Further, the electromagnet mechanism comprises a conductive coil sleeve and a hydraulic component, the conductive coil sleeve is sleeved outside the hydraulic component, the conductive coil sleeve is used for being communicated with an external power supply or an electric appliance, the hydraulic component is used for generating magnetic force to adsorb the rotating frame, and the conductive coil sleeve is provided with a mounting hole which is matched with the second rotating shaft.

Further, the conductive coil sleeve comprises a coil body and a coil frame, the coil body is wound outside the coil frame, the coil frame is sleeved outside the hydraulic component, the second elastic piece is in butt joint with the coil frame, the coil frame is provided with a fixing portion in an outward extending mode, and the mounting hole is formed in the fixing portion.

Further, the hydraulic component includes hydraulic oil cup, iron core, spring and head, and outside the hydraulic oil cup was located to the conductive coil cover, head fixed mounting was in the one end of hydraulic oil cup, and the hydraulic oil cup was used for splendid attire hydraulic oil, and the iron core setting is in the hydraulic oil cup, and is connected with the head through the spring, and the iron core can produce magnetic force when the conductive coil cover is circular telegram to be close to the head under the effect of magnetic force, and the iron core is used for with the head butt when the electric current surpasses the default, and adsorbs the rotating turret through the head.

The utility model provides a circuit breaker, including foretell dynamic balance electromagnetism trip switch, this dynamic balance electromagnetism trip switch includes electromagnet mechanism, the installing support, armature subassembly and turn over the board subassembly, electromagnet mechanism installs in the installing support, electromagnet mechanism is used for with external power or electrical apparatus intercommunication, armature subassembly installs in the one end of installing support, the board subassembly installs in the other end of installing support, armature subassembly includes first elastic component, a rotating shaft, rotating turret and counterweight piece, a rotating shaft installs in the rotating turret, and form the opening with the rotating turret combination, first elastic component cover is located outside the first rotating shaft, the one end and the rotating turret butt of first elastic component, the other end and installing support butt, counterweight piece and rotating turret are connected, and set up in one side that the opening was kept away from to first rotating turret, the counterweight piece can keep balance with the rotating turret, the board subassembly includes second elastic component and turns over the board body, the board body is located to turn over the board body through second elastic component and electromagnet mechanism rotation connection, the rotating turret is arranged in between electromagnet mechanism and turns over the board body butt, and turns over the board body to be provided with the pothook, pothook and opening card, the pothook is used for producing when the pothook and the opening card is used for predetermine the value and is broken away from to make the magnet mechanism and rotates the direction to the opening so that the pothook is kept away from to the opening.

The dynamic balance electromagnetic trip switch and the circuit breaker provided by the invention have the following beneficial effects:

according to the dynamic balance electromagnetic tripping switch provided by the invention, when the circuit current does not exceed the preset value, the balance weight piece and the rotating frame are kept balanced, so that the rotating frame cannot rotate under external vibration; when the circuit current exceeds a preset value, the rotating piece rotates under the action of the magnetic force of the electromagnet mechanism to overcome the elasticity of the first elastic piece, so that the clamping hook is separated from the opening, the rotating piece does not limit the turnover plate body any more, the turnover plate body rotates in the direction away from the electromagnet mechanism under the action of the elasticity of the second elastic piece, and the circuit is cut off. Compared with the prior art, the dynamic balance electromagnetic trip switch provided by the invention has the advantages that the dynamic balance state of the rotating piece can be kept due to the adoption of the weight piece connected with the rotating piece and the electromagnet mechanism magnetically connected with the rotating piece, the situation of mistaken power failure under external vibration is prevented, and the sensitivity is high, and the practicability and the efficiency are high.

The circuit breaker provided by the invention comprises the dynamic balance electromagnetic trip switch, is simple in structure, can enable the rotating piece to keep a dynamic balance state, prevents the situation of mistaken power failure under external vibration, and is high in sensitivity, practical, efficient and good in user experience.

Drawings

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

Fig. 1 is a schematic structural diagram of a circuit breaker in a normal state according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a circuit breaker in an overcurrent state according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a dynamic balance electromagnetic trip switch in a circuit breaker in a normal state according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a dynamic balance electromagnetic trip switch in a circuit breaker in an overcurrent state according to an embodiment of the present invention;

FIG. 5 is a schematic view of the rotating member of FIG. 3;

fig. 6 is a schematic structural view of the flap body in fig. 3;

fig. 7 is a schematic structural diagram of an electromagnet mechanism in an energy storage hydraulic circuit breaker according to an embodiment of the present invention;

FIG. 8 is a schematic view of the hydraulic component of FIG. 7;

fig. 9 is a schematic structural view of the conductive wire loop in fig. 7.

Icon: a 100-circuit breaker; 110-a housing; 120-dynamic balance electromagnetic trip switch; 121-an electromagnet mechanism; 1211-conductive wire mesh; 1212-hydraulic components; 1213-mounting holes; 1214-hydraulic oil cup; 12141-closed end; 12142-an open end; 1215-iron core; 1216-a spring; 1217—closure head; 1218-coil body; 1219-a coil former; 12191-a fixation portion; 12192-first end; 12193-a sleeve; 12194-a second end; 122-mounting a bracket; 1221-opening holes; 123-armature assembly; 1231-a first elastic member; 1232-rotation member; 1233-opening; 1234-a first rotational axis; 1235-turret; 12351—a first connection; 12352-second connecting portion; 12353-abutment; 12354-limit part; 1236-counterweight; 1237-fixed shaft; 1238-balancing weight; 124-flap assembly; 1241-a second elastic member; 1242-a flap body; 1243-hook; 1244-a second rotation shaft; 1245-roll-over stand; 1246-first mount; 1247-a second mount; 1248-extension; 130-moving contact; 140-a fixed contact; 150-a first connection terminal; 160-a second connection terminal; 170-a closing wrench; 171-wrench body; 172-a transmission shaft; 180-tripping mechanism; 181-central axis; 182-rotating member.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "upper", "lower", "horizontal", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

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

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

Examples

Referring to fig. 1, an embodiment of the present invention provides a circuit breaker 100 for automatically cutting off a circuit when a fault such as serious overload or short circuit occurs, so as to ensure electrical safety. The automatic tripping device is simple in structure, capable of enabling the internal tripping to keep a dynamic balance state, high in sensitivity, practical and efficient, and good in user experience, and prevents the situation of mistaken power failure under external vibration.

The circuit breaker 100 includes a housing 110, a dynamic balance electromagnetic trip switch 120, a moving contact 130, a stationary contact 140, a first terminal 150, a second terminal 160, a closing wrench 170, and a trip mechanism 180. The dynamic balance electromagnetic trip switch 120, the moving contact 130, the fixed contact 140, the first wiring terminal 150, the second wiring terminal 160 and the tripping mechanism 180 are all installed in the housing 110, so as to be shielded and protected under the action of the housing 110. The moving contact 130 is fixedly connected with the tripping mechanism 180, is abutted against the fixed contact 140, and the fixed contact 140 is fixedly arranged in the shell 110. The first connection terminal 150 and the second connection terminal 160 are relatively installed at two ends of the housing 110, the dynamic balance electromagnetic trip switch 120 is connected with the first connection terminal 150, the first connection terminal 150 is connected with an external power source or an electric appliance, the second connection terminal 160 is electrically connected with the movable contact 130, and the second connection terminal 160 is connected with the electric appliance or the external power source. The dynamic balance electromagnetic trip switch 120 can push the trip mechanism 180 when the circuit flows excessively, so that the trip mechanism 180 rotates, the trip mechanism 180 drives the moving contact 130 to displace, the moving contact 130 is separated from the fixed contact 140, the circuit is disconnected, and in the process, the trip mechanism 180 pushes the dynamic balance electromagnetic trip switch 120 to reset the dynamic balance electromagnetic trip switch 120 to wait for the next closing. The closing wrench 170 is linked with the trip mechanism 180 and is rotatable with respect to the housing 110. The trip mechanism 180 rotates to drive the closing wrench 170 to rotate, namely trip occurs, if the circuit needs to be communicated again, a user can rotate the closing wrench 170 through external force to drive the trip mechanism 180 to rotate, the movable contact 130 is abutted against the fixed contact 140 again, and the circuit is electrified.

In this embodiment, the first connection terminal 150 is an input terminal, the first connection terminal 150 is connected to an external power source through the electric wire 200, the second connection terminal 160 is an output terminal, and the second connection terminal 160 is connected to an electrical appliance through the electric wire 200.

Referring to fig. 2, it is noted that the trip mechanism 180 includes a central shaft 181 and a rotating member 182. The rotating member 182 is sleeved outside the central shaft 181 and is rotationally connected with the central shaft 181, the central shaft 181 is fixedly arranged in the shell 110, one end of the rotating member 182 is fixedly connected with the moving contact 130, the other end of the rotating member 182 is connected with the closing wrench 170, and the rotating member 182 can rotate relative to the central shaft 181, so that the moving contact 130 is driven to rotate, and the circuit is connected or disconnected.

In this embodiment, the closing wrench 170 includes a wrench body 171 and a transmission shaft 172. The wrench body 171 is rotatably connected with the housing 110, one end of the transmission shaft 172 is hinged with the wrench body 171, the other end is hinged with the rotating member 182, and the rotating member 182 can drive the wrench body 171 to trip rotationally.

The dynamic balance electromagnetic trip switch 120 includes an electromagnet mechanism 121, a mounting bracket 122, an armature assembly 123, and a flap assembly 124. The electromagnet mechanism 121 is installed in the installation support 122 and is electrically connected with the fixed contact 140, the electromagnet mechanism 121 is connected with the first wiring terminal 150, and current flows to the fixed contact 140 after passing through the electromagnet mechanism 121. The armature subassembly 123 is installed in the one end of installing support 122, turns over the board subassembly 124 and installs in the other end of installing support 122, armature subassembly 123 and turns over the board subassembly 124 joint, and armature subassembly 123 and turning over the board subassembly 124 all can rotate for installing support 122. When the current exceeds the preset value, the electromagnet mechanism 121 generates magnetic force to adsorb the armature assembly 123, the armature assembly 123 rotates, the flap assembly 124 is separated from the armature assembly 123, the flap assembly 124 rotates in a direction away from the electromagnet mechanism 121 under the action of self elastic force, and the tripping mechanism 180 is further pushed to rotate, so that the moving contact 130 is separated from the fixed contact 140.

Referring to fig. 3, the armature assembly 123 includes a first elastic member 1231 and a rotating member 1232. The first elastic member 1231 is sleeved outside the rotating member 1232, the rotating member 1232 is rotationally connected with the mounting bracket 122 through the first elastic member 1231, and the first elastic member 1231 provides a torque force for the rotating member 1232 to rotate in a direction away from the electromagnet mechanism 121, so that the rotating member 1232 is kept away from the electromagnet mechanism 121.

The flap assembly 124 includes a second elastic member 1241 and a flap body 1242. The second elastic member 1241 is sleeved outside the flap body 1242, the flap body 1242 is rotationally connected with the electromagnet mechanism 121 through the second elastic member 1241, and the second elastic member 1241 provides torsion for the flap body 1242 to rotate in a direction away from the electromagnet mechanism 121, so that the flap body 1242 is kept away from the electromagnet mechanism 121.

It is noted that the rotating member 1232 is disposed between the electromagnet mechanism 121 and the flap body 1242 and abuts against the flap body 1242, and the flap body 1242 limits the rotating member 1232 to prevent the rotating member 1232 from continuing to rotate. The position of the flap body 1242 corresponds to the position of the tripping mechanism 180, and rotation of the flap body 1242 can push the tripping mechanism 180, so that the tripping mechanism 180 also rotates.

It should be noted that, the rotating member 1232 is provided with an opening 1233, the flap body 1242 is provided with a hook 1243, and the hook 1243 is clamped with the opening 1233 to fix the relative position of the rotating member 1232 and the flap body 1242, so as to prevent the flap body 1242 from continuing to rotate in a direction away from the electromagnet mechanism 121. When the current exceeds the preset value, the electromagnet mechanism 121 generates magnetic force to attract the rotating member 1232, and in the process, the rotating member 1232 overcomes the elastic force of the first elastic member 1231 to rotate towards the direction close to the electromagnet mechanism 121, so that the hook 1243 is separated from the opening 1233, the rotating member 1232 does not limit the flap body 1242, so that the flap body 1242 rotates towards the direction far away from the electromagnet mechanism 121 under the action of the second elastic member 1241, and the tripping mechanism 180 is pushed to rotate, so that the moving contact 130 is separated from the fixed contact 140.

Referring to fig. 4, the rotating member 1232 includes a first rotating shaft 1234, a rotating frame 1235, and a weight 1236. The first rotating shaft 1234 is installed in the rotating frame 1235, and forms an opening 1233 in combination with the rotating frame 1235, and the fastening hook 1243 extends into the opening 1233 and is fastened with the rotating frame 1235. The rotating frame 1235 is abutted with the turning plate body 1242, and the turning plate body 1242 limits the rotating frame 1235. The first elastic member 1231 is sleeved outside the first rotating shaft 1234, one end of the first elastic member 1231 is abutted against the rotating frame 1235, and the other end is abutted against the mounting bracket 122. The counterweight 1236 is connected with the rotating frame 1235 and is disposed on one side, far away from the opening 1233, of the first rotating shaft 1234, and the counterweight 1236 can be balanced with the rotating frame 1235, so that the rotating frame 1235 cannot rotate under external vibration against the elastic force of the first elastic member 1231, and therefore the occurrence of false power failure is avoided. Specifically, the first elastic member 1231 is a torsion spring, and the first elastic member 1231 provides a torsion force for rotating the rotating frame 1235 in a direction away from the electromagnet mechanism 121, so that the rotating frame 1235 is away from the electromagnet mechanism 121 and abuts against the overturning body.

Referring to fig. 5, the rotating frame 1235 includes a first connecting portion 12351, a second connecting portion 12352, an abutting portion 12353, and a limiting portion 12354. One end of the second connecting portion 12352 is connected to the abutting portion 12353, the other end is connected to the weight member 1236, the weight member 1236 and the abutting portion 12353 are disposed on two opposite sides of the first rotating shaft 1234, and the limiting portion 12354 is connected to one end of the first connecting portion 12351 away from the abutting portion 12353. In this embodiment, the first connecting portion 12351, the second connecting portion 12352, the abutting portion 12353 and the limiting portion 12354 are integrally formed, so as to improve the connection strength. One end of the first rotating shaft 1234 passes through the first connecting portion 12351 and is rotatably connected to the mounting bracket 122, and the other end passes through the second connecting portion 12352 and is rotatably connected to the mounting bracket 122, and the first rotating shaft 1234, the first connecting portion 12351, the abutting portion 12353 and the second connecting portion 12352 are combined to form an opening 1233. The abutting portion 12353 abuts against the turning plate body 1242, the turning plate body 1242 limits the abutting portion 12353, the limiting portion 12354 abuts against the mounting bracket 122, and the mounting bracket 122 limits the limiting portion 12354, so that the whole rotating frame 1235 is prevented from continuously rotating in a direction away from the electromagnet mechanism 121.

The torque of the weight 1236 with respect to the first rotation shaft 1234 is equal to the torque of the abutting portion 12353 with respect to the first rotation shaft 1234, and is opposite to the torque. When the hook 1243 is not clamped with the opening 1233, the flap body 1242 and the rotating frame 1235 are not stressed mutually, and the counterweight 1236 and the abutting part 12353 are in a balanced state, so that the whole rotating part 1232 keeps dynamic balance, in the process, the rotating part 1232 is limited by the mounting bracket 122 in the radial direction of the first rotating shaft 1234, and cannot displace under external vibration, and the rotating part 1232 keeps balance at the two axial ends of the first rotating shaft 1234 and cannot displace under external vibration; when the hook 1243 is clamped with the opening 1233, the turning plate body 1242 and the rotating frame 1235 are stressed mutually, and the counterweight 1236 and the abutting part 12353 are in an unbalanced state, so that the turning plate body 1242 limits the rotating frame 1235, and the rotating member 1232 is kept motionless.

The weight 1236 includes a fixed shaft 1237 and a weight 1238. The balancing weight 1238 is sleeved outside the fixed shaft 1237 and fixedly connected with the fixed shaft 1237, and the fixed shaft 1237 is connected with the second connecting portion 12352. In this embodiment, the balancing weight 1238 is cylindrical, and the balancing weight 1238 abuts against the second connecting portion 12352.

With continued reference to fig. 4, the flap body 1242 includes a second rotation shaft 1244 and a roll-over stand 1245. The second rotating shaft 1244 is installed in the roll-over stand 1245, and the roll-over stand 1245 abuts against the rotating member 1232 to limit the rotating member 1232. The roll-over stand 1245 is provided with a hook 1243, and the hook 1243 is clamped in the opening 1233 to limit the roll-over stand 1245. The second elastic member 1241 is sleeved outside the second rotating shaft 1244, one end of the second elastic member 1241 abuts against the roll-over stand 1245, and the other end abuts against the electromagnet mechanism 121. Specifically, the second elastic member 1241 is a torsion spring, and the second elastic member 1241 provides a torsion force for rotating the roll-over stand 1245 in a direction away from the electromagnet mechanism 121, and the torsion force is balanced with a clamping force between the hook 1243 and the opening 1233 to fix a relative position of the roll-over stand 1245 and the rotating member 1232, and when the hook 1243 is separated from the opening 1233, the torsion force can drive the roll-over stand 1245 to rotate in a direction away from the electromagnet mechanism 121, so as to push the trip mechanism 180 to rotate, so that the moving contact 130 is separated from the fixed contact 140.

Referring to fig. 6, the roll-over stand 1245 includes a first mounting portion 1246, a second mounting portion 1247, and an extension portion 1248. The first mounting portion 1246 is connected to the second mounting portion 1247 through an extension portion 1248, and in this embodiment, the first mounting portion 1246, the second mounting portion 1247 and the extension portion 1248 are integrally formed to improve the connection strength. The hook 1243 is disposed on the extension 1248 so as to be convenient for being clamped with the opening 1233. The second rotating shaft 1244 is installed between the first installation portion 1246 and the second installation portion 1247, the second rotating shaft 1244 passes through the electromagnet mechanism 121 and is rotationally connected with the electromagnet mechanism 121, and the second rotating shaft 1244 can drive the roll-over stand 1245 to rotate relative to the electromagnet mechanism 121.

Referring to fig. 7, the electromagnet mechanism 121 includes a conductive wire sleeve 1211 and a hydraulic member 1212. The conductive coil sleeve 1211 is sleeved outside the hydraulic component 1212, the conductive coil sleeve 1211 is used for being communicated with an external power supply or an electric appliance, and when the conductive coil sleeve 1211 is electrified, the hydraulic component 1212 can generate magnetic force. The hydraulic member 1212 is configured to generate a magnetic force to attract the rotating member 1232 such that the rotating member 1232 rotates. The conductive wire ring cover 1211 is provided with a mounting hole 1213, and the mounting hole 1213 is engaged with the second rotation shaft 1244, and the second rotation shaft 1244 can rotate within the mounting hole 1213.

Referring to fig. 8, the hydraulic component 1212 includes a hydraulic cup 1214, a core 1215, a spring 1216, and a head 1217. The conductive wire sleeve 1211 is sleeved outside the hydraulic oil cup 1214, and the end socket 1217 is fixedly installed at one end of the hydraulic oil cup 1214 so as to seal the hydraulic oil cup 1214. The hydraulic oil cup 1214 is used for containing hydraulic oil, the iron core 1215 is arranged in the hydraulic oil cup 1214 and is connected with the end socket 1217 through the spring 1216, the iron core 1215 moves in the environment of the hydraulic oil, the stability and the high efficiency are realized, and the received friction resistance is small. The iron core 1215 can generate magnetic force when the conductive coil sleeve 1211 is energized, and approaches the end cap 1217 under the action of the magnetic force. The iron core 1215 is used for abutting against the end socket 1217 when the current exceeds a preset value, and adsorbing the rotating member 1232 through the end socket 1217.

When the conductive coil sheath 1211 is energized, the iron core 1215 generates magnetism, and the end cap 1217 is fixed, so that the iron core 1215 has a magnetic force approaching the end cap 1217, and the spring 1216 compresses to generate an elastic force in the process that the iron core 1215 approaches the end cap 1217, and the elastic force balances with the magnetic force, so that the iron core 1215 remains stationary. If the passing current is small, the magnetic force is weak, the elastic force is also small, and the iron core 1215 is positioned at one end far away from the end socket 1217, so that the rotary piece 1232 cannot be adsorbed at the moment; if the passing current is large, the magnetic force is large, the elastic force is also large, and the iron core 1215 is positioned at one end close to the end socket 1217, but is not abutted against the end socket 1217, and at the moment, the rotating piece 1232 cannot be adsorbed; if the current exceeds the preset value, the magnetic force completely overcomes the elasticity of the spring 1216, the iron core 1215 is propped against the end socket 1217, the rotating piece 1232 is absorbed, the clamping hook 1243 is separated from the opening 1233, the roll-over stand 1245 rotates in the direction away from the electromagnet mechanism 121, and the tripping mechanism 180 is pushed to rotate, so that the moving contact 130 is separated from the fixed contact 140, and the breaking is realized.

In this embodiment, the hydraulic oil cup 1214 is columnar, the hydraulic oil cup 1214 is relatively provided with a closed end 12141 and an open end 12142, and the end cover 1217 is fixedly mounted at the open end 12142, so as to completely seal the hydraulic oil cup 1214, so that the iron core 1215 can displace in the hydraulic oil environment.

Referring to fig. 9, the conductive coil housing 1211 includes a coil body 1218 and a coil former 1219. The coil body 1218 is wound around the coil frame 1219, the coil frame 1219 is sleeved outside the hydraulic oil cup 1214 and is disposed near the opening end 12142, and the coil body 1218 is used for being connected with an external power source or an electrical appliance, so that the iron core 1215 in the hydraulic oil cup 1214 generates magnetic force. The second elastic member 1241 abuts against the bobbin 1219 to provide torsion to the roll-over stand 1245. The coil frame 1219 is provided with a fixing portion 12191 extending outward, and a mounting hole 1213 is provided in the fixing portion 12191, and the second rotation shaft 1244 is rotatable with respect to the fixing portion 12191.

Notably, the cross-sectional area of the cap 1217 is greater than the cross-sectional area of the open end 12142 to completely close the open end 12142, and the coil former 1219 abuts the cap 1217 to limit the position of the coil former 1219. In this embodiment, the conductive coil sleeve 1211 and the hydraulic oil cup 1214 are both installed in the mounting bracket 122, and one end of the coil frame 1219 away from the end cap 1217 abuts against the mounting bracket 122, and the mounting bracket 122 and the end cap 1217 cooperate to fix the position of the coil frame 1219. In this embodiment, the mounting bracket 122 is provided with an aperture 1221, the length of the coil former 1219 is less than the length of the hydraulic cup 1214, and the hydraulic cup 1214 extends out of the coil former 1219 and through the aperture 1221. Specifically, the core 1215 extends into the bobbin 1219, and energizing the coil body 1218 can cause the core 1215 to generate magnetism.

The coil former 1219 includes a first end 12192, a sleeve 12193, and a second end 12194. The first end 12192 is integrally formed with the second end 12194 through the sheathing portion 12193 to improve the coupling strength. The coil body 1218 is wound around the sleeve portion 12193, the sleeve portion 12193 is sleeved around the hydraulic cup 1214, and the first end portion 12192 and the second end portion 12194 are used for limiting the coil body 1218, so as to prevent the coil body 1218 from being separated from the sleeve portion 12193. The first end 12192 abuts against the mounting bracket 122, the second end 12194 abuts against the cap 1217, and the fixing portion 12191 is connected to the second end 12194. In this embodiment, the sleeving part 12193 has a cylindrical shape, the first end 12192 and the second end 12194 have a disk shape, and the diameters of the first end 12192 and the second end 12194 are larger than the diameter of the sleeving part 12193. Specifically, the first end 12192 is provided with a via hole (not shown), the second end 12194 is provided with a notch (not shown), and one end of the coil body 1218 passes through the via hole and is connected to the first connection terminal 150, and the other end passes through the notch and is connected to the stationary contact 140, so that the coil body 1218 is convenient to mount and dismount.

According to the dynamic balance electromagnetic trip switch 120 provided by the embodiment of the invention, when the circuit current does not exceed the preset value, the balance weight piece 1236 and the rotating frame 1235 keep balance, so that the rotating frame 1235 cannot rotate under external vibration; when the circuit current exceeds the preset value, the rotating member 1232 rotates under the action of the magnetic force of the electromagnet mechanism 121 against the elastic force of the first elastic member 1231, so that the hook 1243 is separated from the opening 1233, the rotating member 1232 does not limit the flap body 1242, and the flap body 1242 rotates in the direction away from the electromagnet mechanism 121 under the action of the elastic force of the second elastic member 1241, so that the circuit is cut off. Compared with the prior art, the dynamic balance electromagnetic trip switch 120 provided by the invention has the advantages that the counterweight 1236 connected with the rotating piece 1232 and the electromagnet mechanism 121 magnetically connected with the rotating piece 1232 are adopted, so that the rotating piece 1232 can be kept in a dynamic balance state, the situation of mistaken power failure under external vibration is prevented, the sensitivity is high, the practicability and the efficiency are high, the circuit breaker 100 is safe and practical, the cost performance is high, and the user experience is good.

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

Claims

1. The utility model provides a dynamic balance electromagnetism tripping switch, its characterized in that includes electromagnet mechanism, installing support, armature subassembly and turning plate subassembly, electromagnet mechanism install in the installing support, electromagnet mechanism be used for with external power or electrical apparatus intercommunication, armature subassembly install in one end of installing support, turning plate subassembly install in the other end of installing support, armature subassembly includes first elastic component, first rotating shaft, rotating turret and counterweight piece, first rotating shaft install in the rotating turret, and with the rotating turret combination forms the opening, first elastic component cover is located outside the first rotating shaft, one end of first elastic component with the rotating turret butt, the other end with the installing support butt, the counterweight piece with the rotating turret is connected, and set up in first rotating shaft keeps away from one side of opening, the counterweight piece can with the rotating turret keeps balanced, the turning plate subassembly includes second elastic component and turning plate body, the second elastic component cover is located outside the turning plate body, the turning plate body passes through the second elastic component set up in the magnet mechanism with the rotating hook body is located the rotating hook body and is passed through the electromagnet mechanism and is used for making the electromagnet mechanism is kept away from to the rotating in the rotating direction when the electromagnet mechanism is kept away from the rotating plate mechanism and is connected with the rotating hook body.

2. The dynamic balance electromagnetic trip switch according to claim 1, wherein the rotating frame includes a first connection portion, a second connection portion, and an abutment portion, one end of the second connection portion is connected to the abutment portion, the other end is connected to the weight, one end of the first rotation shaft passes through the first connection portion and is rotatably connected to the mounting bracket, the other end passes through the second connection portion and is rotatably connected to the mounting bracket, and the first rotation shaft, the first connection portion, the abutment portion, and the second connection portion are combined to form the opening.

3. The dynamic balance electromagnetic trip switch according to claim 2, wherein the weight member includes a fixed shaft and a weight, the weight is sleeved outside the fixed shaft and fixedly connected with the fixed shaft, and the fixed shaft is connected with the second connecting portion.

4. The dynamic balance electromagnetic trip switch according to claim 3, wherein the weight is cylindrical, and the weight is abutted against the second connecting portion.

5. The dynamic balance electromagnetic trip switch according to claim 2, wherein the rotating frame further comprises a limiting portion connected to an end of the first connecting portion away from the abutting portion, and the limiting portion abuts against the mounting bracket.

6. The dynamic balance electromagnetic trip switch according to claim 1, wherein the flap body includes a second rotating shaft and a roll-over stand, the second rotating shaft is installed in the roll-over stand, the roll-over stand is abutted with the rotating stand, the roll-over stand is provided with the clamping hook, the second elastic piece is sleeved outside the second rotating shaft, one end of the second elastic piece is abutted with the roll-over stand, and the other end of the second elastic piece is abutted with the electromagnet mechanism.

7. The dynamic balance electromagnetic trip switch according to claim 6, wherein the electromagnet mechanism includes a conductive coil sleeve and a hydraulic member, the conductive coil sleeve is sleeved outside the hydraulic member, the conductive coil sleeve is used for being communicated with an external power supply or an electric appliance, the hydraulic member is used for generating magnetic force to attract the rotating frame, and the conductive coil sleeve is provided with a mounting hole, and the mounting hole is matched with the second rotating shaft.

8. The dynamic balance electromagnetic trip switch according to claim 7, wherein the conductive coil sleeve includes a coil body and a coil frame, the coil body is wound around the coil frame, the coil frame is sleeved outside the hydraulic member, the second elastic member is abutted to the coil frame, the coil frame is provided with a fixing portion extending outwards, and the mounting hole is formed in the fixing portion.

9. The dynamic balance electromagnetic trip switch according to claim 7, wherein the hydraulic component comprises a hydraulic oil cup, an iron core, a spring and an end enclosure, the conductive coil sleeve is sleeved outside the hydraulic oil cup, the end enclosure is fixedly mounted at one end of the hydraulic oil cup, the hydraulic oil cup is used for containing hydraulic oil, the iron core is arranged in the hydraulic oil cup and is connected with the end enclosure through the spring, the iron core can generate magnetic force when the conductive coil sleeve is electrified and approaches the end enclosure under the action of the magnetic force, and the iron core is used for abutting against the end enclosure when current exceeds a preset value and absorbing the rotating frame through the end enclosure.

10. A circuit breaker comprising a dynamic balancing electromagnetic trip switch according to any one of claims 1 to 9.