CN108831808B - Monostable electromagnetic trip switch and circuit breaker - Google Patents
Monostable electromagnetic trip switch and circuit breaker Download PDFInfo
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- CN108831808B CN108831808B CN201810950221.3A CN201810950221A CN108831808B CN 108831808 B CN108831808 B CN 108831808B CN 201810950221 A CN201810950221 A CN 201810950221A CN 108831808 B CN108831808 B CN 108831808B
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- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 230000007306 turnover Effects 0.000 claims abstract description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004146 energy storage 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
- 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
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- Electromagnetism (AREA)
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Abstract
The invention discloses a monostable electromagnetic trip switch and a circuit breaker, and relates to the technical field of electricity safety. The monostable electromagnetic trip switch comprises an electromagnet mechanism, a mounting bracket, an armature assembly and a turning plate assembly. The turning plate body is sleeved outside the first rotating shaft and is rotationally connected with the first rotating shaft, one end of the second elastic piece is connected with the second rotating shaft, the other end of the second elastic piece is connected with the turning plate body, the rotating piece is arranged between the electromagnet mechanism and the turning plate body and is abutted to 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 monostable electromagnetic trip switch provided by the invention has the advantages that the second elastic piece connected between the turnover plate body and the second rotating shaft and the electromagnet mechanism magnetically connected with the rotating piece are adopted, so that the clamping force between the inner clamping hook and the opening can be reduced, the situation that the circuit cannot be broken when the clamping force is larger than the magnetic force is prevented, the sensitivity is high, and the practicality and the efficiency are realized.
Description
Technical Field
The invention relates to the technical field of electricity safety, in particular to a monostable 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 existing miniature circuit breaker is protected by utilizing overcurrent inverse time-limit tripping, the used bimetallic strip is greatly affected by the environment, the overcurrent protection accuracy is low, the circuit breaking work can not be realized in time when the circuit is in overcurrent, and potential safety hazards exist.
In view of this, it is important to design and manufacture a monostable electromagnetic trip switch capable of precisely breaking and a circuit breaker, especially in the production of the circuit breaker.
Disclosure of Invention
The invention aims to provide a monostable electromagnetic trip switch which has a simple structure, can reduce the clamping force of internal tripping, prevents the situation that the circuit cannot be broken when the clamping force is larger than the magnetic force, and has high sensitivity, practicability and high efficiency.
The invention further aims to provide the circuit breaker which is simple in structure, capable of reducing the clamping force of internal tripping and preventing the situation that the circuit breaker cannot be opened when the clamping force is larger than the magnetic force, high in sensitivity, practical, efficient and good in user experience.
The invention is realized by adopting the following technical scheme.
The utility model provides a monostable electromagnetism tripping switch, including electromagnet mechanism, the installing support, armature subassembly and board 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 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 to be connected with the installing support through first elastic component, board assembly includes the second elastic component and turns over the board body, electromagnet mechanism interval is provided with first rotation axis and second rotation axis, board body cover is located outside the first rotation axis, and rotate with first rotation axis and be connected, the one end and the second rotation axis of second elastic component are connected, the other end and board body coupling turn over, the rotating piece sets up between electromagnet mechanism and board body, and with board body butt, the rotating the piece is provided with the opening, the board body is provided with the pothook, pothook and opening joint, electromagnet mechanism is used for producing magnetic force when the electric current exceeds the default and adsorb the rotating the pothook, so that breaks away from with the opening, thereby make board body to keep away from the direction rotation of electromagnet mechanism.
Further, the board body turns over 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 first installation department is passed to the one end of first rotation axis, and the second installation department is passed to the other end, and the second elastic component is connected with the extension, and the extension sets up in the one end that the second rotation axis was kept away from in first rotation axis.
Further, the number of the second elastic pieces is two, and the two elastic pieces are arranged between the extension part and the second rotating shaft at intervals.
Further, the electromagnet mechanism comprises a conductive wire sleeve and a hydraulic component, the conductive wire sleeve is sleeved outside the hydraulic component, the conductive wire 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 first rotating shaft and the second rotating shaft are both installed on the conductive wire sleeve and are both in rotating connection with the conductive wire sleeve.
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 coil frame extends outwards to be provided with a fixing portion, and the first rotating shaft and the second rotating shaft are both installed 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.
Further, the rotating member comprises a rotating shaft and a rotating frame, the rotating shaft is installed in the rotating frame and is combined with the rotating frame to form an opening, the rotating frame is abutted against the turning plate body, the first elastic member is sleeved outside the rotating shaft, one end of the first elastic member is abutted against the rotating frame, and the other end of the first elastic member is abutted against the mounting bracket.
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 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.
The utility model provides a circuit breaker, including foretell monostable electromagnetism trip switch, this monostable 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 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, armature subassembly includes first elastic component and rotating the piece, first elastic component cover is located outward the rotating piece, it is connected with the installing support rotation through first elastic component to rotate the piece, it includes second elastic component and turns over the board body to turn over the board subassembly, electromagnet mechanism interval is provided with first rotation axis and second rotation axis, it locates outward to turn over the board body cover, and rotate with first rotation axis and be connected, the one end and the second rotation axis are connected, the other end is connected with turning over the board body, it sets up between electromagnet mechanism and turns over the board body, and with turning over the board body butt, it is provided with the opening to rotate the piece, the pothook is provided with the opening joint with the opening, electromagnet mechanism is used for producing magnetic force when the electric current exceeds the default and adsorbing the rotating the piece, so that the pothook breaks away from with the opening, thereby make the direction of turning over the board body to keep away from the electromagnet mechanism.
The monostable electromagnetic trip switch and the circuit breaker provided by the invention have the following beneficial effects:
according to the monostable electromagnetic trip switch provided by the invention, when the circuit current does not exceed the preset value, the clamping hook is clamped with the opening, at the moment, the turnover plate body is subjected to downward pulling force under the action of the second elastic piece, and the component force of the pulling force in the direction away from the electromagnet mechanism is small, so that the clamping force between the clamping hook and the opening is reduced; when the circuit current exceeds a preset value, the electromagnet mechanism generates magnetic force to adsorb the rotating piece, and the clamping force can be easily overcome by the magnetic force because the clamping force is small, so that the clamping hook is separated from the opening, the rotating piece rotates under the action of the magnetic force by overcoming the elastic force of the first elastic piece, 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 monostable electromagnetic trip switch provided by the invention has the advantages that the second elastic piece connected between the turnover plate body and the second rotating shaft and the electromagnet mechanism magnetically connected with the rotating piece are adopted, so that the clamping force between the inner clamping hook and the opening can be reduced, the situation that the circuit cannot be broken when the clamping force is larger than the magnetic force is prevented, the sensitivity is high, and the practicality and the efficiency are realized.
The circuit breaker provided by the invention comprises the monostable electromagnetic trip switch, has a simple structure, can reduce the clamping force between the inner clamping hook and the opening, prevents the situation that the circuit breaker cannot be opened when the clamping force is larger than the magnetic force, and has the advantages of high sensitivity, practicability, high efficiency and good 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 monostable 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 monostable 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 force analysis chart of the connection point of the second elastic member and the extension portion when the circuit current does not exceed the preset value;
FIG. 8 is a force analysis chart of the connection point of the second elastic member and the extension portion when the circuit current exceeds a preset value;
fig. 9 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. 10 is a schematic view of the hydraulic component of FIG. 9;
fig. 11 is a schematic structural view of the conductive wire loop in fig. 9.
Icon: a 100-circuit breaker; 110-a housing; 120-monostable electromagnetic trip switch; 121-an electromagnet mechanism; 1211-conductive wire mesh; 1212-hydraulic components; 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 rotating shaft; 1235-turret; 12351—a first connection; 12352-second connecting portion; 12353-abutment; 12354-limit part; 124-flap assembly; 1241-a second elastic member; 1242-a flap body; 1243-hook; 1244-a first rotation axis; 1245-a second rotation axis; 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 monostable 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 monostable 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 monostable 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 monostable 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 monostable electromagnetic trip switch 120 to reset the monostable 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 a wire, the second connection terminal 160 is an output terminal, and the second connection terminal 160 is connected to an electrical appliance through a wire.
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.
Monostable electromagnetic trip switch 120 includes electromagnet mechanism 121, mounting bracket 122, armature assembly 123, and 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 electromagnet mechanism 121 is provided with a first rotating shaft 1244 and a second rotating shaft 1245 at intervals, the turning plate body 1242 is sleeved outside the first rotating shaft 1244 and is rotationally connected with the first rotating shaft 1244, one end of the second elastic piece 1241 is connected with the second rotating shaft 1245, the other end of the second elastic piece 1241 is connected with the turning plate body 1242, the first rotating shaft 1244 is arranged between the turning plate body 1242 and the second rotating shaft 1245, and the second elastic piece 1241 provides pulling force for the turning plate body 1242 to rotate in a direction away from the electromagnet mechanism 121, so that the turning plate body 1242 keeps 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 rotating shaft 1234 and a rotating frame 1235. The rotating shaft 1234 is mounted in the rotating frame 1235, and is combined with the rotating frame 1235 to form an opening 1233, and the clamping hook 1243 extends into the opening 1233 and is clamped 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 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. 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. The first connecting portion 12351 is connected to the second connecting portion 12352 through the abutting portion 12353, and the limiting portion 12354 is connected to an 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 rotation 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. 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.
Referring to fig. 6, the flap body 1242 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. One end of the first rotation shaft 1244 passes through the first mounting portion 1246, is rotatably connected to the first mounting portion 1246, and the other end passes through the second mounting portion 1247, is rotatably connected to the second mounting portion 1247, and the tilting body can rotate relative to the electromagnet mechanism 121. The second elastic member 1241 is connected to the extension portion 1248, and the extension portion 1248 is disposed at an end of the first rotation shaft 1244 away from the second rotation shaft 1245. Specifically, the second elastic member 1241 is an energy storage spring, the second elastic member 1241 is always in a stretched state, and the second elastic member 1241 provides a pulling force to the extension part 1248 in a direction close to the second rotation axis 1245.
In this embodiment, the first rotation shaft 1244 and the second rotation shaft 1245 are located on the same vertical plane, the first rotation shaft 1244 is located right above the second rotation shaft 1245, the extension part 1248 is located obliquely above one side of the first rotation shaft 1244 away from the electromagnet mechanism 121, the intersection point of the first rotation shaft 1244, the second rotation shaft 1245 and the extension part 1248 with the second elastic member 1241 is combined to form a triangle, the second elastic member 1241 provides an oblique downward pulling force to the extension part 1248, and the component force of the pulling force in the direction away from the electromagnet mechanism 121 is small, and the clamping force between the hook 1243 and the opening 1233 is small due to the balance of the component force and the clamping force between the hook 1243 and the opening 1233, so that the clamping force cannot affect the rotation of the rotating member 1232, and the situation that the rotation of the rotating member 1232 is blocked due to the excessive clamping force is avoided.
Referring to fig. 7 and 8, a point a in the drawings is a connection point between the second elastic member 1241 and the extension portion 1248, a point B is an axis of the first rotation shaft 1244, and a point C is a connection point between the second elastic member 1241 and the second rotation shaft 1245. Specifically, when the circuit current does not exceed the preset value, the hook 1243 is clamped with the opening 1233, at this time, the flap body 1242 is subjected to a downward oblique pulling force F1 under the action of the second elastic member 1241, the direction of the pulling force F1 is from point a to point C, the pulling force F1 is subjected to force analysis and is decomposed into a component force F2 in the direction from point a to point B (AB direction for short) and a component force F3 perpendicular to the AB direction, the component force F2 does not do work, the component force F3 can pull the flap body 1242 to rotate to do work, at this time, the component force F3 is small, and the clamping force between the hook 1243 and the opening 1233 becomes small; when the circuit current exceeds the preset value, the electromagnet mechanism 121 generates magnetic force to adsorb the rotating member 1232, and the clamping force can be easily overcome due to the small clamping force, so that the clamping hook 1243 is separated from the opening 1233, the rotating member 1232 rotates against the elastic force of the first elastic member 1231 under the action of the magnetic force, 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, in the process, the pulling force F1 rotates, the component force F2 is reduced, the component force F3 is increased, the component force F3 can drive the flap body 1242 to rotate in an accelerating way 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 circuit is cut off.
In the present embodiment, the number of the second elastic members 1241 is two, and the two elastic members are disposed between the extension portion 1248 and the second rotation shaft 1245 at intervals to enhance the pulling force on the extension portion 1248 and balance the stress, but not limited thereto, the number of the second elastic members 1241 may be one or three, and the number of the second elastic members 1241 is not particularly limited.
Referring to fig. 9, 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 first rotation shaft 1244 and the second rotation shaft 1245 are both mounted on the conductive coil sleeve 1211 and are both rotatably connected with the conductive coil sleeve 1211, so as to realize rotation of the flap body 1242 and the second elastic member 1241.
Referring to fig. 10, 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, and then the rotating piece 1232 is absorbed, the clamping hook 1243 is separated from the opening 1233, so that the overturning body rotates in a 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 circuit 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. 11, 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 coil frame 1219 is provided with a fixing portion 12191 extending outward, and the first rotation shaft 1244 and the second rotation shaft 1245 are each mounted in the fixing portion 12191 and are each rotatably connected 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 12193, the sleeve 12193 is sleeved around the hydraulic cup 1214, and the first end 12192 and the second end 12194 are used for limiting the coil body 1218, so as to prevent the coil body 1218 from being separated from the sleeve 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 monostable electromagnetic trip switch 120 provided by the embodiment of the invention, when the circuit current does not exceed the preset value, the clamping hook 1243 is clamped with the opening 1233, at this time, the flap body 1242 is subjected to downward pulling force under the action of the second elastic piece 1241, and the component force of the pulling force in the direction away from the electromagnet mechanism 121 is small, so that the clamping force between the clamping hook 1243 and the opening 1233 is small; when the circuit current exceeds the preset value, the electromagnet mechanism 121 generates magnetic force to adsorb the rotating member 1232, and the clamping force can be easily overcome by the magnetic force because the clamping force is small, so that the clamping hook 1243 is separated from the opening 1233, the rotating member 1232 overcomes the elastic force of the first elastic member 1231 to rotate under the action of the magnetic force, 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 monostable electromagnetic trip switch 120 provided by the invention has the advantages that the second elastic piece 1241 connected between the flap body 1242 and the second rotating shaft 1245 and the electromagnet mechanism 121 magnetically connected with the rotating piece 1232 are adopted, so that the clamping force between the inner clamping hook 1243 and the opening 1233 can be reduced, the situation that the circuit cannot be broken when the clamping force is larger than the magnetic force is prevented, the sensitivity is high, the practicability and the efficiency are realized, 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 (10)
1. The utility model provides a monostable electromagnetism tripping switch, its characterized in that, includes electromagnet mechanism, installing support, armature subassembly and turns over the board subassembly, electromagnet mechanism install in the installing support, electromagnet mechanism be used for with external power or electrical apparatus intercommunication, armature subassembly install in the one end of installing support, turn over the board subassembly install in the other end of installing support, armature subassembly includes first elastic component and rotates the piece, first elastic component cover is located outside the rotating piece, it passes through first elastic component with the installing support rotates to be connected, turn over the board subassembly and include second elastic component and turn over the board body, electromagnet mechanism interval is provided with first rotation axis and second rotation axis, turn over the board body cover and locate outside the first rotation axis, and with first rotation axis rotates to be connected, the one end of second elastic component with the second rotation axis is connected, the other end with turn over the board body and be connected, the rotating the piece set up in electromagnet mechanism with between the board body, and with the board body butt turns over, the rotating the piece cover is located the opening, the board body is provided with the opening is located to the card hook body, thereby is used for keeping away from when the magnet mechanism rotates the hook and rotates the opening, thereby makes the electromagnet mechanism rotates to keep away from the opening.
2. The monostable electromagnetic trip switch according to claim 1, wherein the flap body comprises a first mounting portion, a second mounting portion and an extending portion, the first mounting portion is connected with the second mounting portion through the extending portion, the clamping hook is arranged on the extending portion, one end of the first rotating shaft penetrates through the first mounting portion, the other end of the first rotating shaft penetrates through the second mounting portion, the second elastic piece is connected with the extending portion, and the extending portion is arranged at one end, far away from the second rotating shaft, of the first rotating shaft.
3. The monostable electromagnetic trip switch of claim 2 wherein the number of said second elastic members is two, two of said elastic members being disposed in spaced relation between said extension and said second rotational axis.
4. The monostable electromagnetic trip switch according to claim 2, wherein the electromagnet mechanism comprises a conductive wire sleeve and a hydraulic member, the conductive wire sleeve is sleeved outside the hydraulic member, the conductive wire 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 piece, and the first rotating shaft and the second rotating shaft are both installed on the conductive wire sleeve and are both in rotating connection with the conductive wire sleeve.
5. The monostable electromagnetic trip switch according to claim 4, wherein 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 coil frame is provided with a fixing portion extending outwards, and the first rotating shaft and the second rotating shaft are both installed in the fixing portion.
6. The monostable electromagnetic trip switch according to claim 4, wherein the hydraulic component comprises a hydraulic oil cup, an iron core, a spring and an end socket, the conductive coil sleeve is sleeved outside the hydraulic oil cup, the end socket is fixedly installed 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 socket through the spring, the iron core can generate magnetic force when the conductive coil sleeve is electrified and approaches the end socket under the action of the magnetic force, and the iron core is used for abutting against the end socket when current exceeds a preset value and absorbing the rotating piece through the end socket.
7. The monostable electromagnetic trip switch according to claim 1, wherein the rotating member comprises a rotating shaft and a rotating frame, the rotating shaft is installed in the rotating frame and combined with the rotating frame to form the opening, the rotating frame is abutted to the turning plate body, the first elastic member is sleeved outside the rotating shaft, one end of the first elastic member is abutted to the rotating frame, and the other end of the first elastic member is abutted to the installation support.
8. The monostable electromagnetic trip switch according to claim 7, wherein the rotating frame includes a first connection portion, a second connection portion, and an abutment portion, the first connection portion is connected with the second connection portion through the abutment portion, one end of the rotating shaft passes through the first connection portion and is rotatably connected with the mounting bracket, and the other end passes through the second connection portion and is rotatably connected with the mounting bracket.
9. The monostable electromagnetic trip switch according to claim 8, 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.
10. A circuit breaker comprising a monostable electromagnetic trip switch according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950221.3A CN108831808B (en) | 2018-08-20 | 2018-08-20 | Monostable electromagnetic trip switch and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950221.3A CN108831808B (en) | 2018-08-20 | 2018-08-20 | Monostable electromagnetic trip switch and circuit breaker |
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| Publication Number | Publication Date |
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| CN108831808A CN108831808A (en) | 2018-11-16 |
| CN108831808B true CN108831808B (en) | 2023-11-10 |
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| CN201810950221.3A Active CN108831808B (en) | 2018-08-20 | 2018-08-20 | Monostable electromagnetic trip switch and circuit breaker |
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| Publication number | Publication date |
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| CN108831808A (en) | 2018-11-16 |
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