CN114613648A - Conductive system on circuit breaker - Google Patents
Conductive system on circuit breaker Download PDFInfo
- Publication number
- CN114613648A CN114613648A CN202210282252.2A CN202210282252A CN114613648A CN 114613648 A CN114613648 A CN 114613648A CN 202210282252 A CN202210282252 A CN 202210282252A CN 114613648 A CN114613648 A CN 114613648A
- Authority
- CN
- China
- Prior art keywords
- riveting
- iron core
- heating element
- bimetallic strip
- positioning hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000741 silica gel Substances 0.000 claims abstract description 19
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000011231 conductive filler Substances 0.000 claims 2
- 239000013464 silicone adhesive Substances 0.000 claims 2
- 239000000499 gel Substances 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000945 filler Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
-
- 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
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Contacts (AREA)
- Fuses (AREA)
Abstract
A conductive system on a circuit breaker comprises a heating element, a bimetallic strip and an iron core, wherein the iron core is integrally pressure-formed with a riveting rod through a stamping die, the other side of the iron core, which is opposite to the riveting rod, is provided with an assembly positioning hole, the iron core is riveted with the bimetallic strip and the heating element through the riveting rod, and the bimetallic strip and the heating element are provided with riveting holes corresponding to the riveting rod; thermal expansion silica gel is filled in the assembling positioning hole and can extrude the positioning hole when being heated, so that the diameter of the riveting rod is improved; the assembling positioning holes and the riveting rods are formed simultaneously in the process of punching the iron core, and the positioning holes and the riveting rods are located on two sides of the iron core.
Description
Technical Field
The invention relates to a conductive system on a circuit breaker.
Background
The circuit breaker is an important protection device in a low-voltage distribution system, and has the functions of short-circuit protection, overload protection, undervoltage protection and the like for alternating-current power grid lines and electric equipment. The conducting system of the circuit breaker is that a thermal element generates heat when current passes through a release, a bimetallic strip is heated and deformed, and when the bimetallic strip is deformed to a certain degree, a traction rod is struck to drive a mechanism to act to cut off a circuit.
The conductive system in conventional circuit breakers is typically a brazed connection, which is susceptible to breakage resulting in unstable connections. Meanwhile, the traditional circuit breaker has the problems of poor precision and poor conductivity because the conductive system of the traditional circuit breaker is large in copper material quantity, complex in processing and assembling process and needs to be formed by splicing a thermal element, a bimetallic strip and a rear seat through multiple times of electric welding processing.
Disclosure of Invention
The invention aims to provide a conductive system on a breaker, which can solve the problems of large copper material consumption, complex processing and assembling process and poor splicing precision of electric welding processing.
The above object of the present invention is achieved by the following scheme:
a conductive system on a circuit breaker comprises a heating element, a bimetallic strip and an iron core, wherein the iron core is integrally pressure-formed with a riveting rod through a stamping die, the other side of the iron core, which is opposite to the riveting rod, is provided with an assembly positioning hole, the iron core is riveted with the bimetallic strip and the heating element through the riveting rod, and the bimetallic strip and the heating element are provided with riveting holes corresponding to the riveting rod;
thermal expansion silica gel is filled in the assembling positioning hole and can extrude the positioning hole when being heated, so that the diameter of the riveting rod is improved;
the assembling positioning holes and the riveting rods are formed simultaneously in the process of punching the iron core, and the positioning holes and the riveting rods are located on two sides of the iron core.
Furthermore, the conductive system is also provided with a connecting plate, and the upper end of the conductive system is fixedly connected with the upper end of the heating element in a resistance welding mode.
Furthermore, the number of the riveting rods and the number of the assembling positioning holes are larger than 1.
Furthermore, the bimetallic strip is bonded with the bimetallic strip through heat-conducting silica gel, and the heat-conducting silica gel is provided with heat-conducting filler.
Further, the heat conducting filler is carbon black or graphene.
The invention also relates to an assembly process of the conductive system on the circuit breaker, which comprises the following steps:
punching an iron core on a punching die, wherein a riveting rod is obtained on one side of the iron core, and an assembly positioning hole is obtained on the other side of the iron core;
filling thermal expansion silica gel in the assembly positioning hole;
the riveting rod is sleeved with a heating element and a bimetallic strip, and is stamped on a stamping die to rivet the heating element and the bimetallic strip together.
Furthermore, before riveting, the surface of the heating element is coated with heat-conducting silica gel, and after curing, the heating element and the bimetallic strip are bonded through the heat-conducting silica gel.
The technical effects of the invention can be realized by the scheme as follows:
1. the invention adopts a riveting mode to fix the bimetallic strip and the heating element, and compared with the traditional welding, the precision and the firmness are obviously improved.
2. According to the riveting rod, the thermal expansion silica gel is filled in the assembling positioning hole, and the thermal expansion silica gel collides when the heating element generates heat, so that the diameter of the riveting rod in the riveting hole is increased, and the riveting fastness is improved.
3. According to the assembly process, the riveting rod is obtained by adopting the stamping equipment, the riveting is carried out by adopting the stamping equipment, and the whole process only utilizes the traditional stamping equipment, so that the cost and the process complexity are reduced.
Drawings
Fig. 1 is a schematic diagram of a conduction system on a circuit breaker of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.
Referring to fig. 1, a conductive system on a circuit breaker includes a heating element 2, a bimetal 3, and an iron core 4, wherein the iron core 4 is integrally pressure-formed with a riveting rod through a stamping die, the iron core 4 has an assembly positioning hole on the other side opposite to the riveting rod, the iron core 4 is riveted with the bimetal 3 and the heating element 2 through the riveting rod, and the bimetal 3 and the heating element 2 have riveting holes corresponding to the riveting rod;
thermal expansion silica gel is filled in the assembling positioning hole and can extrude the positioning hole when being heated, so that the diameter of the riveting rod is improved;
the assembly positioning holes and the riveting rods are formed simultaneously in the process of punching the iron core 4, and the positioning holes and the riveting rods are located on two sides of the iron core 4.
Furthermore, the conducting system also comprises a connecting plate 1, and the upper end of the connecting plate is fixedly connected with the upper end of the heating element 2 in a resistance welding mode.
Furthermore, the number of the riveting rods and the number of the assembling positioning holes are larger than 1.
Further, the bimetallic strip 3 is bonded with the bimetallic strip 3 through heat-conducting silica gel, and the heat-conducting silica gel is provided with heat-conducting filler.
Further, the heat conducting filler is carbon black or graphene.
The invention also relates to an assembly process of the conductive system on the circuit breaker, which comprises the following steps:
punching an iron core on a punching die, wherein a riveting rod is obtained on one side of the iron core, and an assembly positioning hole is obtained on the other side of the iron core;
filling thermal expansion silica gel in the assembly positioning hole;
the riveting rod is sleeved with a heating element and a bimetallic strip, and is stamped on a stamping die to rivet the heating element and the bimetallic strip together.
Further, before riveting, the surface of the heating element is coated with heat-conducting silica gel, and after curing, the heating element and the bimetallic strip are bonded through the heat-conducting silica gel.
The invention adopts a riveting mode to fix the bimetallic strip and the heating element, and compared with the traditional welding, the precision and the firmness are obviously improved.
According to the riveting rod, the thermal expansion silica gel is filled in the assembling positioning hole, and the thermal expansion silica gel collides when the heating element generates heat, so that the diameter of the riveting rod in the riveting hole is increased, and the riveting fastness is improved.
According to the assembly process, the riveting rod is obtained by adopting the stamping equipment, the stamping equipment is adopted for riveting, only the traditional stamping equipment is utilized in the whole process, and the cost and the process complexity are reduced.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A conductive system on a circuit breaker comprises a heating element, a bimetallic strip and an iron core,
the iron core is integrally pressure-formed with a riveting rod through a stamping die, the other side of the iron core, which is opposite to the riveting rod, is provided with an assembly positioning hole, the iron core is riveted with a bimetallic strip and a heating element through the riveting rod, and the bimetallic strip and the heating element are provided with riveting holes corresponding to the riveting rod;
thermal expansion silica gel is filled in the assembling positioning hole and can extrude the positioning hole when being heated, so that the diameter of the riveting rod is improved;
the assembling positioning holes and the riveting rods are formed simultaneously in the process of punching the iron core, and the positioning holes and the riveting rods are located on two sides of the iron core.
2. The conductive system of claim 1 further comprising a connecting plate, wherein said upper end is fixedly connected to the upper end of said heating element by resistance welding.
3. The conductive system of claim 1, wherein the number of rivet bars and the number of assembly locating holes is greater than 1.
4. The system of claim 1, wherein the bimetallic strip is bonded to the bimetallic strip by a thermally conductive silicone gel having a thermally conductive filler.
5. The electrically conductive system of claim 4, wherein the thermally conductive filler is carbon black or graphene.
6. A process for assembling an electrically conductive system on a circuit breaker according to any of claims 1 to 5, comprising the steps of:
punching an iron core on a punching die, wherein a riveting rod is obtained on one side of the iron core, and an assembly positioning hole is obtained on the other side of the iron core;
filling thermal expansion silica gel in the assembly positioning hole;
the riveting rod is sleeved with a heating element and a bimetallic strip, and is stamped on a stamping die to rivet the heating element and the bimetallic strip together.
7. An assembling process according to claim 6, wherein a heat conductive silicone adhesive is applied to the surface of said heating element before riveting, and said heating element and said bimetal are bonded by said heat conductive silicone adhesive after curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282252.2A CN114613648A (en) | 2022-03-22 | 2022-03-22 | Conductive system on circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282252.2A CN114613648A (en) | 2022-03-22 | 2022-03-22 | Conductive system on circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114613648A true CN114613648A (en) | 2022-06-10 |
Family
ID=81864921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210282252.2A Pending CN114613648A (en) | 2022-03-22 | 2022-03-22 | Conductive system on circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114613648A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976640A (en) * | 2010-09-20 | 2011-02-16 | 江苏大全凯帆电器有限公司 | Low-voltage breaker tripper |
| CN201845723U (en) * | 2010-05-21 | 2011-05-25 | 嘉兴市加控电气设备制造有限公司 | Overload protection device of circuit breaker |
| CN204905192U (en) * | 2015-09-10 | 2015-12-23 | 乐清市嘉菱电器有限公司 | Hot protection mechanism of circuit breaker |
| CN105810523A (en) * | 2016-06-02 | 2016-07-27 | 常熟开关制造有限公司(原常熟开关厂） | Heat element structure of releaser of circuit breaker |
| KR20170123092A (en) * | 2016-04-28 | 2017-11-07 | 엘에스산전 주식회사 | Direct Trip Device for Circuit Breaker |
| CN208178518U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of separate assembling fluted drill |
| CN208675921U (en) * | 2018-08-09 | 2019-04-02 | 漳州大唐生物科技有限公司 | A kind of agricultural greenhouse attachment device |
| CN209328826U (en) * | 2019-04-01 | 2019-08-30 | 浙江瑞科电气有限公司 | A kind of tripping device for circuit breaker |
| CN211566990U (en) * | 2019-11-08 | 2020-09-25 | 易凯科越(厦门)复材科技有限公司 | Carbon fiber wheel rim forming die |
| CN212114628U (en) * | 2020-05-08 | 2020-12-08 | 上海火克新材料有限公司 | Cable protection sleeve with fire-proof performance |
| CN215008115U (en) * | 2021-07-09 | 2021-12-03 | 浙江建申电器有限公司 | Thermal tripping element of circuit breaker and riveting die |
-
2022
- 2022-03-22 CN CN202210282252.2A patent/CN114613648A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845723U (en) * | 2010-05-21 | 2011-05-25 | 嘉兴市加控电气设备制造有限公司 | Overload protection device of circuit breaker |
| CN101976640A (en) * | 2010-09-20 | 2011-02-16 | 江苏大全凯帆电器有限公司 | Low-voltage breaker tripper |
| CN204905192U (en) * | 2015-09-10 | 2015-12-23 | 乐清市嘉菱电器有限公司 | Hot protection mechanism of circuit breaker |
| KR20170123092A (en) * | 2016-04-28 | 2017-11-07 | 엘에스산전 주식회사 | Direct Trip Device for Circuit Breaker |
| CN105810523A (en) * | 2016-06-02 | 2016-07-27 | 常熟开关制造有限公司(原常熟开关厂） | Heat element structure of releaser of circuit breaker |
| CN208178518U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of separate assembling fluted drill |
| CN208675921U (en) * | 2018-08-09 | 2019-04-02 | 漳州大唐生物科技有限公司 | A kind of agricultural greenhouse attachment device |
| CN209328826U (en) * | 2019-04-01 | 2019-08-30 | 浙江瑞科电气有限公司 | A kind of tripping device for circuit breaker |
| CN211566990U (en) * | 2019-11-08 | 2020-09-25 | 易凯科越(厦门)复材科技有限公司 | Carbon fiber wheel rim forming die |
| CN212114628U (en) * | 2020-05-08 | 2020-12-08 | 上海火克新材料有限公司 | Cable protection sleeve with fire-proof performance |
| CN215008115U (en) * | 2021-07-09 | 2021-12-03 | 浙江建申电器有限公司 | Thermal tripping element of circuit breaker and riveting die |
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