CN114496665A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN114496665A CN114496665A CN202210011863.3A CN202210011863A CN114496665A CN 114496665 A CN114496665 A CN 114496665A CN 202210011863 A CN202210011863 A CN 202210011863A CN 114496665 A CN114496665 A CN 114496665A
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- Prior art keywords
- bimetal
- circuit breaker
- terminal
- section
- current sensor
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- 230000006698 induction Effects 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000010931 gold Substances 0.000 abstract description 21
- 229910052737 gold Inorganic materials 0.000 abstract description 21
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 15
- WVQBLGZPHOPPFO-LBPRGKRZSA-N (S)-metolachlor Chemical compound CCC1=CC=CC(C)=C1N([C@@H](C)COC)C(=O)CCl WVQBLGZPHOPPFO-LBPRGKRZSA-N 0.000 description 21
- 238000010586 diagram Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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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
- H01H71/08—Terminals; Connections
Landscapes
- Breakers (AREA)
Abstract
The invention discloses a circuit breaker, which comprises a shell, a first terminal, a double-gold-piece, a current sensor and a connecting piece, wherein the shell is provided with a front side plate; the first terminal, the bimetallic strip and the current sensor are all arranged in the shell, the current sensor is provided with an induction hole, and a central axis of the current sensor extends towards the front and back directions of the front side plate; the connecting piece runs through the induction hole, and both ends are connected respectively the first terminal with two gold sheets. This practical technical scheme extends the fore-and-aft direction of curb plate before through the axis with current sensor, changes traditional current sensor placing means, effectively reduces the space on the circuit breaker thickness and occupies, improves the space utilization of circuit breaker.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within 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, the boundary of the high voltage and the low voltage is divided more clearly, the circuit breaker is generally called as a high-voltage electrical appliance with the voltage of more than 3kV, the circuit breaker can be used for distributing electric energy, an asynchronous motor is not frequently started, a power supply circuit, the motor and the like are protected, when the circuit breaker generates serious faults such as overload, short circuit, undervoltage and the like, the circuit can be automatically cut off, the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, and parts are generally not required to be changed after fault current is cut off. In the existing circuit breaker, a connecting piece between a bimetallic strip and a terminal is parallel to a bottom plate of the circuit breaker, and a central axis of a current sensor penetrated by the connecting piece is vertical to plate surfaces on the left side and the right side. This current sensor's the mode of placing in the circuit breaker for current sensor occupies the inner space of circuit breaker thickness direction great, and space utilization is little, is unfavorable for the installation that sets up of other parts.
Disclosure of Invention
The invention mainly aims to provide a circuit breaker, and aims to solve the problem that a current sensor occupies a large space in the thickness direction of the circuit breaker.
In order to achieve the above object, the present invention provides a circuit breaker, including a case, a first terminal, a bimetal, a current sensor, and a connector, wherein the case has a front side plate; the first terminal, the bimetallic strip and the current sensor are all arranged in the shell, the current sensor is provided with an induction hole, and a central axis of the current sensor extends towards the front and back directions of the front side plate; the connecting piece runs through the induction hole, and two ends of the connecting piece are respectively connected with the first terminal and the bimetallic strip.
In an embodiment, the connecting piece includes first terminal linkage segment, interlude and two gold linkage segments, the interlude both ends are connected respectively the first terminal linkage segment with two gold linkage segments, first terminal linkage segment is connected the first terminal, two gold linkage segments run through the induction hole is connected two gold pieces, the interlude with the preceding curb plate is parallel, current sensor's axis with preceding curb plate is perpendicular.
In an embodiment, the dual-gold connecting section includes a first dual-gold connecting section and a second dual-gold connecting section, two ends of the first dual-gold connecting section are respectively connected with the middle section and the second dual-gold connecting section, one end of the second dual-gold connecting section far away from the first dual-gold connecting section is connected with the dual-gold sheet, and the second dual-gold connecting section has elasticity.
In one embodiment, the first gold-plated connecting section and the first terminal connecting section are perpendicular to the middle section and perpendicular to the bottom surface of the housing.
In an embodiment, the second bimetal connecting section is perpendicular to the front side plate, and the second bimetal connecting section includes a plurality of metal plates connected in sequence, and the plurality of metal plates are arranged in a winding and circuitous manner.
In one embodiment, the first bimetal connecting section, the middle section and the first terminal connecting section are all arranged in a square sheet shape.
In one embodiment, a gap exists between the current sensor and the front side plate, and the middle section is located in the gap.
In one embodiment, the one side that two gold sheets deviate from the connecting piece is connected with the support frame, the lower extreme of support frame is equipped with movable screw, the casing corresponds movable screw is equipped with the screw hole, movable screw can the screw hole is rotatory flexible.
In one embodiment, the connecting member is made of copper.
In an embodiment, the circuit breaker further comprises a switch assembly and a second terminal, the switch assembly and the second terminal are arranged in the shell, the first terminal, the switch assembly and the second terminal are sequentially and electrically connected to form a main loop, a double-gold connecting portion is arranged at the bottom of the switch assembly, and the double-gold connecting portion is connected with the double-gold piece.
According to the technical scheme, the central axis of the current sensor extends towards the front and back directions of the front side plate, so that the traditional current sensor placement mode is changed, the space occupation on the thickness of the circuit breaker is effectively reduced, and the space utilization rate of the circuit breaker is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of an internal structure of a conventional circuit breaker;
fig. 2 is a schematic diagram of a back internal structure of an embodiment of the circuit breaker of the present invention;
fig. 3 is a schematic diagram of an internal structure of an embodiment of the circuit breaker of the present invention;
fig. 4 is an overall external view of an embodiment of the circuit breaker of the present invention;
fig. 5 is a schematic diagram of a portion of a circuit breaker according to an embodiment of the present invention;
fig. 6 is another schematic view of an angle portion of a circuit breaker according to an embodiment of the invention;
figure 7 is a front view of a portion of one embodiment of the circuit breaker of the present invention;
fig. 8 is another partial schematic structural diagram of an embodiment of the circuit breaker of the present invention;
fig. 9 is a schematic diagram of a connection structure of an embodiment of the circuit breaker of the invention;
fig. 10 is an exploded view of the connectors of an embodiment of the circuit breaker of the present invention.
The reference numbers illustrate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 100 | |
400 | Double- |
| 110 | |
500 | |
| 200 | Connecting |
600 | |
| 210 | First |
610 | Double- |
| 220 | |
700 | |
| 230 | Double- |
710 | |
| 231 | First |
800 | |
| 232 | Second bimetallic connecting segment | 500’ | |
| 300 | First terminal | 200’ | Existing connecting piece |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within 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, the boundary of the high voltage and the low voltage is divided more clearly, the circuit breaker is generally called as a high-voltage electrical appliance with the voltage of more than 3kV, the circuit breaker can be used for distributing electric energy, an asynchronous motor is not frequently started, a power supply circuit, the motor and the like are protected, when the circuit breaker generates serious faults such as overload, short circuit, undervoltage and the like, the circuit can be automatically cut off, the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, and parts are generally not required to be changed after fault current is cut off.
Referring to fig. 1, in the conventional circuit breaker, a connecting member 200 ' between the bimetal and the terminal is parallel to a bottom plate of the circuit breaker, and a central axis of a current sensor 500 ' through which the connecting member 200 ' passes is perpendicular to plate surfaces on left and right sides. This current sensor 500 'the mode of placing in the circuit breaker for current sensor 500' occupies the inner space of circuit breaker thickness direction great, and space utilization is little, is unfavorable for the setting installation of other parts.
Referring to fig. 2 to 10, the present invention provides a circuit breaker, including a housing 100, a first terminal 300, a bimetal 400, a current sensor 500 and a connecting member 200, wherein the housing 100 has a front side plate 110; the first terminal 300, the bimetal 400 and the current sensor 500 are all disposed in the housing 100, the current sensor 500 is provided with an induction hole, and a central axis of the current sensor 500 extends in a front-rear direction of the front side plate 110; the connection member 200 penetrates through the sensing hole, and both ends of the connection member are respectively connected to the first terminal 300 and the bimetal 400.
Specifically, the front plate 110 of the housing 100 may be square, rectangular, regular, or irregular. The first terminal 300 may be an input terminal of the circuit breaker, or may be an output terminal of the circuit breaker, and the first terminal 300 is described as an input terminal. The connector 200 may be made of copper or other conductive material, which should be conductive. Current flows from the first terminal 300 into the connector 200, through the bimetal 400 to the output terminal. The current sensor 500 may be a transformer or other form of current sensing measurement device. The current sensor 500 is used to sense current and provide additional protection for the circuit breaker from repeated power outages. Still another important feature is the hot melt trigger protection of bimetallic strip 400. The sensing hole senses the current in the connecting piece 200, and the current can be received by the instrument through certain signal conversion, so that the real current is converted. The signal detected by the current sensor 500 may perform functions such as metering and waveform monitoring.
The diameter of the current sensor 500 is generally greater than the thickness of the current sensor 500. Referring to fig. 1, in the conventional circuit breaker, a central axis of a current sensor 500 'is perpendicular to left and right side plates, a thickness of the circuit breaker is identical to a diameter direction of the current sensor 500', and a space occupied in the thickness direction of the circuit breaker is large. Referring to fig. 2 to 3, the central axis of the current sensor 500 extends in the front-back direction of the front side plate 110, which may be perpendicular or approximately perpendicular, for example: 90 degrees, 85 degrees, 89 degrees, 92 degrees, etc., are all possible. This kind of structure has changed traditional mode of placing for the thickness of circuit breaker is unanimous with current sensor 500's thickness direction, and current sensor 500 occupies the space littleer in the thickness direction, improves the space utilization of circuit breaker, increases the thickness space of circuit breaker.
Referring to fig. 5 to 9, in the present embodiment, the connecting element 200 may be bent at a plurality of positions, and needs to go around the sensing hole of the current sensor 500, and two ends of the connecting element are respectively connected to the first terminal 300 and the bimetallic strip 400. The connection members 200 may be formed such that the plates of the plurality of connection members 200 are parallel to side plates (front side plate 110, left side plate, rear side plate, right side plate, etc.) of the circuit breaker in a plurality of directions, thereby improving space utilization.
Further, the connection member 200 includes a first terminal connection section 210, a middle section 220 and a bimetal connection section 230, two ends of the middle section 220 are respectively connected to the first terminal connection section 210 and the bimetal connection section 230, the first terminal connection section 210 is connected to the first terminal 300, the bimetal connection section 230 penetrates through the sensing hole to be connected to the bimetal piece 400, the middle section 220 is parallel to the front side plate 110, and a central axis of the current sensor 500 is perpendicular to the front side plate 110.
It is understood that the first terminal connecting section 210, the middle section 220, and the bimetal connecting section 230 may be rectangular, square, circular, regular and irregular, etc., and all may be possible. In order to secure the shape stability of the connection member 200, the first terminal connection section 210, the middle section 220, and the bimetal connection section 230 may be a unitary structure. The first terminal connection section 210 is bent at the connection point with the middle section 220 to extend and connect the first terminal 300, and the bimetal connection section 230 is connected with the bimetal piece 400 by bending the sensing hole penetrating through the current sensor 500. In order to realize that the central axis of the current sensor 500 is perpendicular to the front side plate 110, the middle section 220 is a section of the connecting piece 200 which is positioned between the first terminal 300 and the penetrating current sensor 500, the middle section 220 is set to be a structure which is parallel to the front side plate 110 and penetrates through a gap between the current sensor 500 and the front side plate 110, the space of the current sensor 500 in the thickness direction of the circuit breaker is effectively reduced, and the utilization rate of the space is improved.
Referring to fig. 8 to 10, further, the dual-gold connection segment 230 includes a first dual-gold connection segment 231 and a second dual-gold connection segment 232, two ends of the first dual-gold connection segment 231 are respectively connected to the middle segment 220 and the second dual-gold connection segment 232, one end of the second dual-gold connection segment 232 far from the first dual-gold connection segment 231 is connected to the dual-gold tab 400, and the second dual-gold connection segment 232 has elasticity.
It is understood that the first bimetal connection segment 231 passes through the sensing hole of the current sensor 500, the second bimetal connection segment 232 extends from the lower end of the first bimetal connection segment 231 to be connected to the bimetal 400, and the second bimetal connection segment 232 is also partially located in the sensing hole. The second bimetal connecting section 232 has elasticity, and when the bimetal 400 moves to the left, the second bimetal connecting section 232 is in a stretching state; when the bimetal 400 moves to the right, the second bimetal connecting section 232 is in a compressed state. So that the bimetallic strip 400 can be shifted to adjust the distance, the distance between the bimetallic strip 400 and the switch assembly 600 is changed, the tripping distance is influenced, and different tripping conditions are set.
Referring to fig. 4 to 5, the first gold-double connection segment 231 and the first terminal connection segment 210 may be disposed at an angle with respect to the middle segment 220, and the angle may be 70 degrees, 80 degrees, 90 degrees, 100 degrees, and the like, and is not limited in particular. Further, in the present embodiment, the first gold connecting segment 231 and the first terminal connecting segment 210 are perpendicular to the middle segment 220 and perpendicular to the bottom surface of the housing 100. That is, the first bimetal connection segment 231 and the first terminal connection segment 231 are parallel to each other and are parallel to the left and right side plates of the circuit breaker. So set up, saved the material of connecting piece 200 at first bimetal linkage segment 231 and first terminal linkage segment 231, realized that the shortest distance accomplishes being connected between first terminal 300 and the two gold plates 400, saved the inner space of circuit breaker, improved the utilization ratio of circuit breaker inner space.
Referring to fig. 9 to 10, further, the second bimetal connecting section 232 is perpendicular to the front side plate 110, and the second bimetal connecting section 232 includes a plurality of metal plates connected in sequence, and the plurality of metal plates are arranged in a winding and winding manner. It is understood that the second gold double connecting segment 232 extends from the lower side of the first gold double connecting segment 231 and is connected to the gold double plate 400 in a winding and weaving manner. So set up, the polylith metal sheet has increased the area of second two gold connection section 232 and external contact for the heat radiating area of second two gold connection section 232 is big, and the heat dissipation is fast when the electric current passes through second two gold connection section 232, and then has improved the heat dispersion of circuit breaker, guarantees the stability of circuit breaker function. Meanwhile, the plurality of metal plates are bent and circuitous, so that the elasticity of the second bimetal connecting section 232 can be increased, and the activity flexibility of the bimetal piece 400 is increased.
With continued reference to fig. 9 to 10, further, the first bimetal connecting section 231, the middle section 220 and the first terminal connecting section 210 are all disposed in a square sheet shape. The square sheet has small volume, saves the internal space of the circuit breaker, has simple processing technology and is beneficial to the production and processing of the connecting piece 200.
Referring to fig. 2 to 4, further, a gap exists between the current sensor 500 and the front side plate 110, and the middle section 220 is located in the gap. It can be understood that the gap between the current sensor 500 and the front side plate 110 should be enough to accommodate the thickness of the middle section 220 in the connector 200, and the whole connector 200 is connected with the bimetal 400 after sequentially passing through the gap between the current sensor 500 and the front side plate 110 and the sensing hole of the current sensor 500 from the first terminal 300, so that the internal space of the circuit breaker is reasonably utilized.
Referring to fig. 8, in this embodiment, a support frame 700 is connected to a surface of the bimetallic strip 400 departing from the connecting member 200, a movable screw 710 is disposed at a lower end of the support frame 700, a threaded hole is disposed in the casing 100 corresponding to the movable screw 710, and the movable screw 710 can be rotatably extended and retracted in the threaded hole.
It should be noted that the bimetal 400 can be bent and deformed due to heat generation under the action of current, when the circuit breaker normally works, the switch assembly 600 is in a closing state, and when the current is too large, the switch assembly 600 of the circuit breaker is driven to move by the bent and deformed bimetal 400, so that the switch assembly 600 of the circuit breaker is turned from the closing state to the opening state, and the overcurrent protection of the circuit breaker is realized. It can be understood that, referring to fig. 2 to fig. 3, in the embodiment, the movable screw 710 is adapted to the threaded hole of the housing 100, the movable screw 710 can move back and forth in the threaded hole by rotating, the support frame 700 can drive the second bimetal connecting section 232 to elastically deform, the bimetal 400 can move along with the deformation of the second bimetal connecting section 232 to change the angle, the change of the angle of the bimetal 400 affects the distance that the bimetal 400 trips the switch assembly 600, so that the trip distance is affected, and different tripping conditions of the circuit breaker can be set by adjusting the distance that the bimetal 400 trips the switch assembly 600.
Further, the movable screw 710 may be a hexagon socket head cap screw. The user can insert the hexagonal cylinder from the bottom surface of the housing 100 to manually rotate the socket head cap screw, so that the movable screw 710 moves back and forth, thereby adjusting the position of the bimetal 400 and influencing the tripping distance of the circuit breaker.
In this embodiment, the connecting member 200 is made of copper. The current flows from the first terminal 300 into the connector 200, the output terminal, and it is required that the connector 200 has good conductivity. The material of this embodiment connecting piece 200 is copper, and copper not only has good electric conductive property, and economical and practical can effectively reduce the cost of enterprise's production simultaneously.
Referring to fig. 2 to 7, in this embodiment, the circuit breaker further includes a switch assembly 600 and a second terminal 800, the switch assembly 600 and the second terminal 800 are both disposed in the housing 100, the first terminal 300, the switch assembly 600 and the second terminal 800 are electrically connected in sequence to form a main loop, the bottom of the switch assembly 600 has a dual-gold connecting portion 610, and the dual-gold connecting portion 610 is connected to the dual-gold piece 400.
Specifically, when the first terminal 300 is used as an input terminal, and the second terminal 800 is used as an output terminal, a current flows from the first terminal 300 to the second terminal 800 through the connection member 200, the bimetal 400 and the switch assembly 600. The switch assembly 600 is used to control the switching on and off of the circuit breaker and to control the switching on and off of the circuit. The bimetal connection portion of the switch assembly 600 is connected to the bimetal 400, and when the current is too large, the bimetal 400 generates heat, bends and deforms, and the bimetal connection portion 610 drives the whole switch assembly 600 to be switched from a switching-on state to a switching-off state.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A circuit breaker, comprising
A housing having a front side plate;
the first terminal, the double-gold-piece and the current sensor are all arranged in the shell, the current sensor is provided with an induction hole, and a central axis of the current sensor extends towards the front and back directions of the front side plate;
and the connecting piece penetrates through the induction hole, and two ends of the connecting piece are respectively connected with the first terminal and the double-gold-piece.
2. The circuit breaker according to claim 1, wherein the connecting member includes a first terminal connecting section, a middle section and a bimetal connecting section, two ends of the middle section are respectively connected to the first terminal connecting section and the bimetal connecting section, the first terminal connecting section is connected to the first terminal, the bimetal connecting section penetrates through the sensing hole to be connected to the bimetal, the middle section is parallel to the front side plate, and a central axis of the current sensor is perpendicular to the front side plate.
3. The circuit breaker of claim 2, wherein the bimetal connecting section comprises a first bimetal connecting section and a second bimetal connecting section, two ends of the first bimetal connecting section are respectively connected with the middle section and the second bimetal connecting section, one end of the second bimetal connecting section far away from the first bimetal connecting section is connected with the bimetal, and the second bimetal connecting section has elasticity.
4. The circuit breaker of claim 3, wherein the first bimetal connection section and the first terminal connection section are both perpendicular to the middle section and both perpendicular to a bottom surface of the housing.
5. The circuit breaker of claim 4, wherein the second bimetal connecting section is perpendicular to the front side plate, and the second bimetal connecting section comprises a plurality of metal plates connected in sequence, and the plurality of metal plates are arranged in a zigzag manner.
6. The circuit breaker of claim 5, wherein the first bimetal connection section, the middle section, and the first terminal connection section are each arranged in a square sheet shape.
7. The circuit breaker of claim 6, wherein a gap exists between the current sensor and the front side plate, the middle section being located at the gap.
8. The circuit breaker as claimed in claim 3, wherein a support frame is connected to a surface of the bimetallic strip facing away from the connecting member, a movable screw is disposed at a lower end of the support frame, the housing is provided with a threaded hole corresponding to the movable screw, and the movable screw is rotatably retractable in the threaded hole.
9. The circuit breaker according to any one of claims 1 to 8, characterized in that the connecting element is made of copper.
10. The circuit breaker of claim 9, further comprising a switch assembly and a second terminal, wherein the switch assembly and the second terminal are disposed in the housing, the first terminal, the switch assembly and the second terminal are electrically connected in sequence to form a main circuit, and a bottom of the switch assembly has a bimetallic connector connected to the bimetallic strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210011863.3A CN114496665A (en) | 2022-01-05 | 2022-01-05 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210011863.3A CN114496665A (en) | 2022-01-05 | 2022-01-05 | Circuit breaker |
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| CN114496665A true CN114496665A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210011863.3A Pending CN114496665A (en) | 2022-01-05 | 2022-01-05 | Circuit breaker |
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| CN202221745U (en) * | 2011-09-06 | 2012-05-16 | 浙江加西亚电子电器有限公司 | Small-size electric leakage circuit breaker |
| JP2013161753A (en) * | 2012-02-08 | 2013-08-19 | Kawamura Electric Inc | Circuit breaker |
| KR101850310B1 (en) * | 2017-07-24 | 2018-04-19 | 제일전기공업 주식회사 | apparatus for earth leakage circuit breaker |
| CN111627771A (en) * | 2020-03-31 | 2020-09-04 | 青岛鼎信通讯股份有限公司 | A novel mutual-inductor structure for overload protection |
| CN111755287A (en) * | 2020-07-09 | 2020-10-09 | 江苏三口井信息科技有限公司 | Circuit breaker device with fault recording performance |
| CN112542361A (en) * | 2020-12-14 | 2021-03-23 | 深圳曼顿科技有限公司 | Circuit breaker |
| CN214477271U (en) * | 2020-12-28 | 2021-10-22 | 浙江正泰电器股份有限公司 | Residual current circuit breaker |
| CN112735924A (en) * | 2020-12-30 | 2021-04-30 | 上海佳岚智能科技有限公司 | Intelligent circuit breaker |
| CN113192800A (en) * | 2021-03-18 | 2021-07-30 | 厦门宏发开关设备有限公司 | Small-size intelligent circuit breaker |
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