CN109036990B - Hydraulic electromagnetic trip switch and circuit breaker - Google Patents
Hydraulic electromagnetic trip switch and circuit breaker Download PDFInfo
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- CN109036990B CN109036990B CN201810950210.5A CN201810950210A CN109036990B CN 109036990 B CN109036990 B CN 109036990B CN 201810950210 A CN201810950210 A CN 201810950210A CN 109036990 B CN109036990 B CN 109036990B
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- 230000007246 mechanism Effects 0.000 claims abstract description 85
- 239000010720 hydraulic oil Substances 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 230000007306 turnover Effects 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
- H01H2071/2427—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism with blow-off movement tripping mechanism, e.g. electrodynamic effect on contacts trips the traditional trip device before it can unlatch the spring mechanism by itself
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a hydraulic electromagnetic trip switch and a circuit breaker, and relates to the technical field of electricity safety. The hydraulic electromagnetic trip switch comprises an electromagnet mechanism, a mounting bracket, an armature assembly and a turning plate assembly. The rotating piece is rotationally connected with the mounting bracket through the first elastic piece, the turning plate body is rotationally connected with the electromagnet mechanism through the second elastic piece, the rotating piece is arranged between the electromagnet mechanism and the turning plate body and is abutted with the turning plate body, the rotating piece is provided with an opening, and the turning plate body is provided with a clamping hook which is clamped with the opening. Compared with the prior art, the hydraulic electromagnetic trip switch provided by the invention has the advantages that the electromagnet mechanism which is magnetically connected with the rotating piece and the clamping hook which is clamped with the opening are adopted, so that the circuit can be immediately cut off when the current exceeds a preset value, the sensitivity is high, the breaking efficiency is high, the service life is long, and the practicability is strong.
Description
Technical Field
The invention relates to the technical field of electricity safety, in particular to a hydraulic 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 traditional circuit breaker has a complex structure, low circuit breaking efficiency and low sensitivity and cannot accurately realize the circuit breaking work.
In view of the above, it is important to design and manufacture a sensitive and efficient hydraulic electromagnetic trip switch and a circuit breaker, especially in the circuit breaker production.
Disclosure of Invention
The invention aims to provide a hydraulic electromagnetic trip switch which has the advantages of simple structure, high sensitivity, high breaking efficiency, long service life and strong practicability, and can accurately and efficiently cut off a circuit.
The invention further aims to provide the circuit breaker which is simple in structure, high in sensitivity, high in breaking efficiency, long in service life, strong in practicability and high in cost performance, and a circuit can be accurately and efficiently broken.
The invention is realized by adopting the following technical scheme.
The utility model provides a hydraulic pressure 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 communicating with external power or electrical apparatus, 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 and rotating the piece, first elastic component cover is located outside the rotating piece, the rotating piece rotates through first elastic component and installing support and is connected, board turnover assembly includes the second elastic component and turns over the board body, the second elastic component cover is located outside the board turnover body, board turnover body rotates through second elastic component and electromagnet mechanism and is connected, it sets up between electromagnet mechanism and turns over the board body, and with board turnover body butt, it is provided with the opening to rotate the piece, the board 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 and adsorbs the rotating piece, so that the pothook breaks away from with the opening, thereby make the board turnover body rotate to the direction of keeping away from electromagnet mechanism.
Further, the rotating piece comprises a first rotating shaft and a rotating frame, the first rotating shaft is installed in the rotating frame and combined with the rotating frame to form an opening, the rotating frame is abutted to the turning plate body, the first elastic piece is sleeved outside the first rotating shaft, one end of the first elastic piece is abutted to the rotating frame, and the other end of the first elastic piece is abutted to the mounting support.
Further, the rotating frame comprises a first connecting part, a second connecting part and an abutting part, wherein the first connecting part is connected with the second connecting part through the abutting part, one end of the first rotating shaft penetrates through the first connecting part and is rotationally connected with the mounting bracket, and the other end penetrates through the second connecting part and is rotationally connected with the mounting bracket.
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 the piece 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 roll-over stand includes first installation department, second installation department and extension, and first installation department passes through extension and is connected with second installation department, and the pothook sets up on the extension, and the second axis of rotation is installed between first installation department and second installation department, and the second axis of rotation passes electromagnet mechanism, and rotates with electromagnet mechanism and be connected.
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 piece, 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 adsorb the rotation piece through the head.
The utility model provides a circuit breaker, including foretell hydraulic pressure electromagnetism trip switch, this hydraulic pressure electromagnetism trip switch includes electromagnet mechanism, the installing support, armature subassembly and turns over the board subassembly, electromagnet mechanism installs in the installing support, electromagnet mechanism is used for communicating with external power or electrical apparatus, armature subassembly installs in the one end of installing support, it installs in the other end of installing support to turn over the board subassembly, the armature subassembly includes first elastic component and rotates the piece, first elastic component cover is located and is rotated outside the piece, it is connected with the installing support to rotate the piece through first elastic component, turn over the board subassembly and include second elastic component and turn over the board body, the second elastic component cover is located and is turned over the board body, turn over the board body and be connected with electromagnet mechanism rotation through the second elastic component, it sets up between electromagnet mechanism and turns over the board body butt to turn over the board body, it is provided with the pothook to rotate the board body, pothook and opening joint, electromagnet mechanism is used for producing magnetic force when the electric current surpasses the default and adsorb the piece, thereby make the pothook break away from with the opening, thereby make the board body rotate to the direction of keeping away from electromagnet mechanism.
The hydraulic electromagnetic trip switch and the circuit breaker provided by the invention have the following beneficial effects:
according to the hydraulic electromagnetic trip switch provided by the invention, when the circuit current exceeds the preset value, the rotating piece rotates under the action of the magnetic force of the electromagnet mechanism to overcome the elastic force of the first elastic piece, so that the clamping hook is separated from the opening, the rotating piece does not limit the turning plate body any more, and the turning plate body rotates in the direction away from the electromagnet mechanism under the action of the elastic force of the second elastic piece, so that the circuit is cut off. Compared with the prior art, the hydraulic electromagnetic trip switch provided by the invention has the advantages that the electromagnet mechanism which is magnetically connected with the rotating piece and the clamping hook which is clamped with the opening are adopted, so that the circuit can be immediately cut off when the current exceeds a preset value, the sensitivity is high, the breaking efficiency is high, the service life is long, and the practicability is strong.
The circuit breaker provided by the invention comprises the hydraulic electromagnetic trip switch, has a simple structure, can cut off a circuit immediately when the current exceeds a preset value, and has the advantages of high sensitivity, high circuit breaking efficiency, long service life, strong practicability and high cost performance.
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 an overcurrent protection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the energy storage hydraulic circuit breaker provided in the embodiment of the invention in a normal state;
fig. 3 is a schematic structural diagram of an energy storage hydraulic circuit breaker in an overcurrent state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hydraulic electromagnetic trip switch in an energy storage hydraulic circuit breaker provided by an embodiment of the invention in a normal state;
fig. 5 is a schematic structural diagram of a hydraulic electromagnetic trip switch in an energy storage hydraulic circuit breaker in an overcurrent state according to an embodiment of the present invention;
FIG. 6 is a schematic view of the rotor of FIG. 4;
fig. 7 is a schematic structural view of the flap body in fig. 4;
fig. 8 is a schematic structural diagram of a hydraulic electromagnet structure in an energy storage hydraulic circuit breaker according to an embodiment of the present invention;
FIG. 9 is a schematic view of the hydraulic component of FIG. 8;
fig. 10 is a schematic structural view of the conductive wire loop in fig. 8.
Icon: 10-overcurrent protection device; 100-energy storage hydraulic circuit breaker; 110-a housing; 120-a hydraulic 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; 1236-first connection; 1237-a second connection; 1238-abutment; 1239-stop; 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; 190-a hydraulic electromagnet structure; 200-wire.
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 an overcurrent protection device 10, which is used for automatically cutting off a circuit when a fault such as serious overload or short circuit occurs, so as to ensure the power consumption safety. The circuit breaker has the advantages of simple structure, high sensitivity, high breaking efficiency, long service life, strong practicability and high cost performance, and can accurately and efficiently cut off the circuit. The overcurrent protection device 10 comprises an energy storage hydraulic circuit breaker 100 and an electric wire 200, wherein an external power supply is connected with the energy storage hydraulic circuit breaker 100 through the electric wire 200, the energy storage hydraulic circuit breaker 100 is connected with an electric appliance through the electric wire 200 so as to realize the power supply of the external power supply to the electric appliance, and when the power supply circuit fails in an overcurrent manner, the energy storage hydraulic circuit breaker 100 cuts off the circuit to protect the electric appliance and ensure the safety of electricity utilization.
Referring to fig. 2, the energy storage hydraulic circuit breaker 100 includes a housing 110, a hydraulic electromagnetic trip switch 120, a moving contact 130, a fixed contact 140, a first connection terminal 150, a second connection terminal 160, a closing wrench 170, and a trip mechanism 180. The hydraulic electromagnetic trip switch 120, the moving contact 130, the fixed contact 140, the first connecting terminal 150, the second connecting terminal 160 and the trip mechanism 180 are all installed in the housing 110 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 installed at two ends of the housing 110 relatively, the hydraulic 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 hydraulic 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 hydraulic electromagnetic trip switch 120 to reset the hydraulic electromagnetic trip switch 120 to wait for closing next time. 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. 3, 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 hydraulic 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. 4, 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. 5, the rotating member 1232 includes a first rotating shaft 1234 and a rotating frame 1235. 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. 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. 6, the rotating frame 1235 includes a first connecting portion 1236, a second connecting portion 1237, an abutting portion 1238 and a limiting portion 1239. The first connecting portion 1236 is connected to the second connecting portion 1237 through the abutting portion 1238, and the limiting portion 1239 is connected to an end of the first connecting portion 1236 away from the abutting portion 1238, in this embodiment, the first connecting portion 1236, the second connecting portion 1237, the abutting portion 1238 and the limiting portion 1239 are integrally formed, so as to improve the connection strength. One end of the first rotating shaft 1234 passes through the first connecting portion 1236 and is rotatably connected to the mounting bracket 122, and the other end passes through the second connecting portion 1237 and is rotatably connected to the mounting bracket 122. The abutting portion 1238 abuts against the turning plate body 1242, the turning plate body 1242 limits the abutting portion 1238, the limiting portion 1239 abuts against the mounting bracket 122, and the mounting bracket 122 limits the limiting portion 1239, so that the whole rotating frame 1235 is prevented from continuing to rotate in a direction away from the electromagnet mechanism 121.
With continued reference to fig. 5, 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. 7, 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. 8, 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.
The conductive coil sleeve 1211, the hydraulic member 1212 and the mounting bracket 122 are collectively referred to as a hydraulic electromagnet structure 190, the conductive coil sleeve 1211 and the hydraulic member 1212 are mounted in the mounting bracket 122, and the mounting bracket 122 limits the conductive coil sleeve 1211 and the hydraulic member 1212.
Referring to fig. 9, 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. 10, 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 hydraulic electromagnetic trip switch 120 provided by the embodiment of the invention, when the circuit current exceeds the preset value, the rotating piece 1232 rotates under the action of the magnetic force of the electromagnet mechanism 121 against the elastic force of the first elastic piece 1231, so that the clamping hook 1243 is separated from the opening 1233, the rotating piece 1232 does not limit the flap body 1242, and therefore 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 piece 1241, and further the circuit is cut off. Compared with the prior art, the hydraulic electromagnetic trip switch 120 provided by the invention has the advantages that the electromagnet mechanism 121 magnetically connected with the rotating piece 1232 and the clamping hook 1243 clamped with the opening 1233 are adopted, so that the circuit can be immediately cut off when the current exceeds a preset value, the sensitivity is high, the breaking efficiency is high, the service life is long, the practicability is strong, the breaker 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 (7)
1. The hydraulic electromagnetic trip switch is characterized by comprising an electromagnet mechanism, a mounting bracket, an armature assembly and a flap assembly, wherein the electromagnet mechanism is mounted in the mounting bracket and is used for being communicated with an external power supply or an electric appliance, the armature assembly is mounted at one end of the mounting bracket, the flap assembly is mounted at the other end of the mounting bracket, the armature assembly comprises a first elastic piece and a rotating piece, the first elastic piece is sleeved outside the rotating piece, the rotating piece is rotationally connected with the mounting bracket through the first elastic piece, the flap assembly comprises a second elastic piece and a flap body, the second elastic piece is sleeved outside the flap body, the flap body is rotationally connected with the electromagnet mechanism through the second elastic piece, the rotating piece is arranged between the electromagnet mechanism and the flap body and is in butt joint with the flap body, the rotating piece is provided with an opening, the flap body is provided with a clamping hook, the clamping hook is in butt joint with the opening, and the electromagnet mechanism is used for generating a magnetic force exceeding a preset value to adsorb the clamping piece so as to enable the clamping hook to be far away from the opening, and further away from the electromagnet mechanism;
the rotating piece comprises a first rotating shaft and a rotating frame, the first rotating shaft is installed in the rotating frame and is combined with the rotating frame to form the opening, the rotating frame is abutted to the turning plate body, the first elastic piece is sleeved outside the first rotating shaft, one end of the first elastic piece is abutted to the rotating frame, and the other end of the first elastic piece is abutted to the mounting bracket;
the rotating frame comprises a first connecting part, a second connecting part and an abutting part, wherein the first connecting part is connected with the second connecting part through the abutting part, one end of the first rotating shaft penetrates through the first connecting part and is rotationally connected with the mounting bracket, and the other end of the first rotating shaft penetrates through the second connecting part and is rotationally connected with the mounting bracket;
the turnover plate body comprises a second rotating shaft and a turnover frame, the second rotating shaft is installed in the turnover frame, the turnover frame is in butt joint with the rotating piece, the turnover frame is provided with the clamping hooks, the second elastic piece is sleeved outside the second rotating shaft, one end of the second elastic piece is in butt joint with the turnover frame, and the other end of the second elastic piece is in butt joint with the electromagnet mechanism.
2. The hydraulic electromagnetic trip switch according to claim 1, wherein the turret further includes a limiting portion connected to an end of the first connecting portion remote from the abutting portion, the limiting portion abutting the mounting bracket.
3. The hydraulic electromagnetic trip switch according to claim 1, wherein the roll-over stand includes a first mounting portion, a second mounting portion, and an extension portion, the first mounting portion is connected with the second mounting portion through the extension portion, the hook is disposed on the extension portion, the second rotating shaft is mounted between the first mounting portion and the second mounting portion, and the second rotating shaft passes through the electromagnet mechanism and is rotatably connected with the electromagnet mechanism.
4. The hydraulic electromagnetic trip switch according to claim 3, 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 absorb the rotating member, the conductive coil sleeve is provided with a mounting hole, and the mounting hole is matched with the second rotating shaft.
5. The hydraulic electromagnetic trip switch according to claim 4, 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.
6. The hydraulic electromagnetic trip switch according to claim 4, wherein the hydraulic member comprises a hydraulic oil cup, an iron core, a spring and a seal head, the conductive coil sleeve is sleeved outside the hydraulic oil cup, the seal head 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 seal head through the spring, the iron core can generate magnetic force when the conductive coil sleeve is electrified and approaches the seal head under the action of the magnetic force, and the iron core is used for abutting against the seal head when current exceeds a preset value and absorbing the rotating piece through the seal head.
7. A circuit breaker comprising a hydraulic electromagnetic trip switch according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950210.5A CN109036990B (en) | 2018-08-20 | 2018-08-20 | Hydraulic electromagnetic trip switch and circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950210.5A CN109036990B (en) | 2018-08-20 | 2018-08-20 | Hydraulic electromagnetic trip switch and circuit breaker |
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| CN109036990A CN109036990A (en) | 2018-12-18 |
| CN109036990B true CN109036990B (en) | 2024-03-19 |
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| CN201810950210.5A Active CN109036990B (en) | 2018-08-20 | 2018-08-20 | Hydraulic electromagnetic trip switch and circuit breaker |
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| CN107610987A (en) * | 2017-09-22 | 2018-01-19 | 嘉兴市加控电气设备制造有限公司 | A kind of miniature circuit breaker |
| CN208580706U (en) * | 2018-08-20 | 2019-03-05 | 厦门大恒科技有限公司 | Hydraulic electromagnetic tripping switch and circuit breaker |
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| JPS6381725A (en) * | 1986-09-25 | 1988-04-12 | 東芝ライテック株式会社 | Circuit breaker |
| CN101872698A (en) * | 2009-04-21 | 2010-10-27 | 上海良信电器股份有限公司 | Improved hydraulic electromagnetic breaker |
| JP2014241226A (en) * | 2013-06-11 | 2014-12-25 | パナソニックＩｐマネジメント株式会社 | Electromagnetic tripping device and circuit breaker |
| CN106783434A (en) * | 2017-02-14 | 2017-05-31 | 张文红 | A kind of heavy current breaker and its tripping mechanism with oil damping hydraulic-electromagnetic tripping mechanism |
| CN107275163A (en) * | 2017-06-29 | 2017-10-20 | 首瑞（天津）电气设备有限公司 | Breaker and distribution system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109036990A (en) | 2018-12-18 |
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