CN109559942B - Circuit breaker with embedded conducting plate - Google Patents
Circuit breaker with embedded conducting plate Download PDFInfo
- Publication number
- CN109559942B CN109559942B CN201710884440.1A CN201710884440A CN109559942B CN 109559942 B CN109559942 B CN 109559942B CN 201710884440 A CN201710884440 A CN 201710884440A CN 109559942 B CN109559942 B CN 109559942B
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- face
- wiring terminal
- plate
- contact
- base
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- 230000003068 static effect Effects 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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 relates to a circuit breaker with a pre-buried conductive plate, which comprises a base, an arc extinguishing chamber, three groups of static contacts, three groups of moving contacts, a tripping element, an upper wiring terminal bus bar and a lower wiring terminal bus bar, wherein the three groups of static contacts are arranged on the base and are distributed in parallel, the three groups of moving contacts correspond to the static contacts, the tripping element, the upper wiring terminal bus bar and the lower wiring terminal bus bar are arranged in the base in a pre-buried manner, one end of the conductive plate is connected with one of the static contacts, and the other end of the conductive plate is connected with the moving contact corresponding to the adjacent static contact. Compared with the prior art, the circuit breaker reduces the volume of the circuit breaker and the production cost of the product by embedding the conductive plate in the base; meanwhile, the fixed contact and the movable contact corresponding to the adjacent fixed contact are connected through the conductive plate, so that the loop resistance can be reduced, and the internal resistance and the power consumption of the product can be reduced.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to a circuit breaker with a pre-buried conductive plate.
Background
With the development of new energy technology, higher requirements are put on the piezoelectric device. In particular, with the continuous development of photovoltaic power plants, performance indexes of protection elements required by the power plants are also required to be higher. In photovoltaic power direct current systems, the rated operating voltage of the low voltage electrical appliance is even up to DC1500V. The breaking performance of the circuit breaker can be improved by adopting a breakpoint series connection method. In this regard, many manufacturers at home and abroad have also put out various circuit breaker wiring application schemes, and wiring is performed at the external terminal of the circuit breaker, so that two or more poles of the circuit breaker are connected in series to form a series connection breakpoint.
As disclosed in patent CN102592903 a, a multi-break circuit breaker is disclosed, in which at least one twin stationary contact is provided in a base, at least two sets of stationary contacts corresponding to two sets of moving contacts having opposite current flow directions are provided on the base, and one set of stationary contacts corresponds to one arc extinguishing chamber. The circuit breaker base has a plurality of break points connected in series, and a user does not need to wire outside at the connecting terminal for connecting the break points in series. As can be seen from the preset wiring schematic diagram of the patent, the conducting loop of the pole connection is longer, in the structural schematic diagram of the embodiment 1, the left side is used as a single pole of the circuit breaker, and in addition, three poles are connected in series to form a pole, the series pole is from the upper right end to the first fixed contact, the moving contact to the second moving contact, the fixed contact to the third fixed contact and the moving contact, finally, the wire is led out from the trip unit to the lower right end, the whole pole connection loop is longer, the connection points are more, the internal resistance of the series pole is large, and the power consumption of the circuit breaker is also increased.
And as further disclosed in patent CN 204632703U, the circuit breaker with a double-layer pole connection structure comprises a static contact and a base, wherein the static contact comprises a contact part and a pole connection part, the static contact is in an letter L shape and is fixedly arranged on the base, the contact part is positioned on the upper layer of the base, and the pole connection part is positioned on the lower layer of the base, so that the double-layer pole connection structure is realized. But the structure of this circuit breaker is comparatively complicated, and the volume of circuit breaker is great, and manufacturing cost is higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the circuit breaker with the embedded conductive plate, which has low cost, internal resistance and low power consumption.
The aim of the invention can be achieved by the following technical scheme: the circuit breaker with the embedded type conducting plates comprises a base, an arc extinguishing chamber, three groups of fixed contacts, three groups of moving contacts, a tripping element, an upper wiring terminal bus bar and a lower wiring terminal bus bar, wherein the three groups of fixed contacts, the three groups of moving contacts, the tripping element and the upper wiring terminal bus bar are arranged on the base and are distributed in parallel, one conducting plate is embedded in the base, one end of the conducting plate is connected with one fixed contact, and the other end of the conducting plate is connected with the moving contact corresponding to the adjacent fixed contact. According to the invention, the conducting plate is pre-buried in the base, so that the static contact and the adjacent moving contact are prevented from being connected by using a conducting wire or a connecting plate additionally, the occupied volume of a part is reduced, and the volume of the whole circuit breaker can be reduced; in addition, the fixed contact and the movable contact corresponding to the adjacent fixed contact are connected through the conductive plate, so that the loop resistance can be reduced, and the internal resistance and the power consumption of the product can be reduced.
The electric conduction plate is L-shaped, and comprises an L-shaped bottom plate and an end face and a second end face which are integrally arranged at two ends of the L-shaped bottom plate, wherein the end face and the second end face are parallel to the plane where the L-shaped bottom plate is located, the heights of the end face and the second end face are higher than the plane where the L-shaped bottom plate is located, the L-shaped floor is pre-buried and arranged in the base, the end face is connected with one of the fixed contacts, and the second end face is connected with a moving contact corresponding to the adjacent fixed contact. The conductive plate is arranged, the conductive plate can be embedded in the base, and the two end faces can be conveniently contacted with the fixed contact and the moving contact.
Three connecting holes which are distributed in a triangular mode are formed in the first end face, and the fixed contact is connected with the first end face through bolts penetrating through the connecting holes; two connecting holes are formed in the second end face, and one end of the moving contact is connected with the second end face through bolts penetrating through the connecting holes; the L-shaped bottom plate is provided with two fixing holes, and the base is connected with the L-shaped bottom plate through bolts penetrating through the fixing holes.
The static contact comprises a conductive copper plate, an alloy contact fixedly arranged in the middle of the conductive copper plate and an arc striking sheet arranged at one end of the conductive copper plate, wherein one end of the arc striking sheet exceeds the edge of the conductive copper plate.
The conductive copper sheets of the three groups of static contacts are connected with the upper wiring terminal bus, and one ends of the three groups of movable contacts are connected with the lower wiring terminal bus through tripping elements.
The tripping element comprises an overload tripping device and a short-circuit tripping device, one moving contact connected with the conducting plate and a moving contact corresponding to a fixed contact connected with the conducting plate are connected with the lower wiring terminal bus through the overload tripping device, and the remaining moving contact is connected with the lower wiring terminal bus through the short-circuit tripping device. The overload release is an overload current protection release composed of bimetal, and when overload current faults occur in the circuit, the overload release acts within a certain delay time, and the circuit breaker is opened. Such as: when the current exceeds 1.3 times of the set current, the circuit breaker operates within 2 hours, thereby protecting the circuit. The short-circuit release is a short-circuit current protection release of a clapping electromagnet, and when a short-circuit current fault occurs in the circuit, the short-circuit release instantaneously acts, and the circuit breaker is opened, so that the circuit is protected.
The overload release is a bimetal thermal overload protection release, and the short-circuit release is a clapping electromagnet short-circuit protection release.
Compared with the prior art, the invention has the following beneficial effects:
(1) The conducting plate is pre-buried in the base, so that the size of the circuit breaker is reduced, and the production cost of a product is reduced;
(2) The static contact and the moving contact corresponding to the adjacent static contact are connected through the conducting plate, so that the loop resistance can be reduced, and the internal resistance and the power consumption of the product can be reduced.
Drawings
Fig. 1 is a schematic view of the general structure of a circuit breaker of the present invention;
Fig. 2 is a schematic diagram of a pre-buried structure of a conductive plate in a base;
FIG. 3 is a schematic view of a conductive plate according to the present invention;
FIG. 4 is a schematic view of the structure of the stationary contact of the present invention;
FIG. 5 is a schematic diagram of the connection of the conductive plate and the stationary contact according to the present invention;
Fig. 6 is a schematic diagram of an electrical circuit of a circuit breaker without a conductive plate;
Fig. 7 is a schematic diagram of the electrical circuit of the circuit breaker of the present invention.
Wherein 1 is the base, 2 is the upper wiring terminal busbar, 3 is the static contact, 4 is the moving contact, 5 is overload release, 6 is short-circuit release, 7 is the lower wiring terminal busbar, 8 is the conducting plate, 9 is the connecting hole, 10 is the conducting copper plate, 11 is the alloy contact, 12 is the striking flake, 13 is L bottom plate, 14 is the terminal surface, 15 is the terminal surface, 16 is the fixed orifices.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Example 1
The circuit breaker with embedded type conducting plates is shown in fig. 1, the structure of the circuit breaker is shown in fig. 1, the circuit breaker comprises a base 1, an arc extinguishing chamber, three groups of fixed contacts 3 which are arranged on the base 1 and distributed in parallel, three groups of movable contacts 4 which correspond to the fixed contacts 3, an overload release 5, a short-circuit release 7, an upper wiring terminal bus 2 and a lower wiring terminal bus 7, a conducting plate 8 is embedded in the base 1, one end of the conducting plate 8 is connected with one fixed contact 3, the other end of the conducting plate 8 is connected with the movable contact 4 which corresponds to the adjacent fixed contact 3, one movable contact 4 which is connected with the conducting plate 8 and the movable contact 4 which corresponds to the fixed contact 3 which is connected with the conducting plate 8 are connected with the lower wiring terminal bus 7 through the overload release 5, and the rest of the movable contacts 4 are connected with the lower wiring terminal bus 7 through the short-circuit release 6. The circuit of the circuit breaker is converted from the form of fig. 6 to the form of fig. 7 by adding the conductive plate, so that the circuit of the circuit breaker is effectively shortened, and the internal resistance and the power consumption are reduced.
The structure of the conducting plate 8 is shown in fig. 3, and is L-shaped, and comprises an L-shaped bottom plate 13, an end face 14 and a second end face 15 which are integrally arranged at two ends of the L-shaped bottom plate 13, the first end face 14 and the second end face 15 are parallel to the plane where the L-shaped bottom plate 13 is located, the heights of the first end face 14 and the second end face 15 are higher than the plane where the L-shaped bottom plate 13 is located, the L-shaped bottom plate is embedded in the base 1, the first end face 14 is connected with one of the fixed contacts 3, and the second end face 15 is connected with the movable contact 4 corresponding to the adjacent fixed contact 3. The conductive plate 8 is arranged, so that the conductive plate 8 can be pre-buried in the base 1, and the two end surfaces can be conveniently contacted with the fixed contact 3 and the moving contact 4.
The structure of the static contact 3 is shown in fig. 4, and comprises a conductive copper plate 10, an alloy contact 11 fixedly arranged in the middle of the conductive copper plate 10, and an arc striking piece 12 arranged at one end of the conductive copper plate 10, wherein one end of the arc striking piece 12 exceeds the edge of the conductive copper plate.
Three connecting holes 9 distributed in a triangular shape are formed in the first end face 14, and the fixed contact 3 is connected with the first end face 14 through bolts penetrating through the connecting holes 9; two connecting holes 9 are formed in the second end face 15, one end of the movable contact 4 is connected with the second end face 15 through bolts penetrating through the connecting holes 9, two fixing holes 16 are formed in the L-shaped bottom plate 13 as shown in fig. 5, and the base 1 is connected with the L-shaped bottom plate 13 through bolts penetrating through the fixing holes 16.
The conductive copper sheets of the three groups of static contacts 3 are connected with the upper wiring terminal bus 2, and one ends of the three groups of moving contacts 4 are connected with the lower wiring terminal bus 7 through tripping elements.
Claims (2)
1. The circuit breaker with the embedded type conducting plates comprises a base, an arc extinguishing chamber, three groups of fixed contacts, three groups of moving contacts, a tripping element, an upper wiring terminal bus bar and a lower wiring terminal bus bar, wherein the three groups of fixed contacts are arranged on the base and distributed in parallel;
the conductive plate is L-shaped and comprises an L-shaped bottom plate, a first end face and a second end face which are integrally arranged at two ends of the L-shaped bottom plate, the first end face and the second end face are parallel to the plane of the L-shaped bottom plate, the heights of the first end face and the second end face are higher than the plane of the L-shaped bottom plate, the L-shaped bottom plate is pre-buried and arranged in the base, the first end face is connected with one of the fixed contacts, and the second end face is connected with a moving contact corresponding to the adjacent fixed contact;
Three connecting holes which are distributed in a triangular mode are formed in the first end face, and the fixed contact is connected with the first end face through bolts penetrating through the connecting holes; two connecting holes are formed in the second end face, and one end of the moving contact is connected with the second end face through bolts penetrating through the connecting holes; the L-shaped bottom plate is provided with two fixing holes, and the base is connected with the L-shaped bottom plate through bolts penetrating through the fixing holes;
The static contact comprises a conductive copper plate, an alloy contact fixedly arranged in the middle of the conductive copper plate and an arc striking sheet arranged at one end of the conductive copper plate, and one end of the arc striking sheet exceeds the edge of the conductive copper plate;
the conductive copper sheets of the three groups of static contacts are connected with the upper wiring terminal bus, and one ends of the three groups of movable contacts are connected with the lower wiring terminal bus through tripping elements;
The tripping element comprises an overload tripping device and a short-circuit tripping device, one moving contact connected with the conducting plate and a moving contact corresponding to a fixed contact connected with the conducting plate are connected with the lower wiring terminal bus through the overload tripping device, and the remaining moving contact is connected with the lower wiring terminal bus through the short-circuit tripping device.
2. The circuit breaker with embedded conductive plate of claim 1, wherein the overload release is a bimetal thermal overload protection release and the short circuit release is a clapping electromagnet short circuit protection release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884440.1A CN109559942B (en) | 2017-09-26 | 2017-09-26 | Circuit breaker with embedded conducting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884440.1A CN109559942B (en) | 2017-09-26 | 2017-09-26 | Circuit breaker with embedded conducting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109559942A CN109559942A (en) | 2019-04-02 |
| CN109559942B true CN109559942B (en) | 2024-05-17 |
Family
ID=65862820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884440.1A Active CN109559942B (en) | 2017-09-26 | 2017-09-26 | Circuit breaker with embedded conducting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109559942B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257399Y (en) * | 1995-12-25 | 1997-07-02 | 童莫建 | Energy-saving light-regulating pulling switch |
| KR20050110064A (en) * | 2004-05-17 | 2005-11-22 | 주식회사 비츠로테크 | Embeded vacuum interrupter in epoxy barrier for vacuum circuit breaker |
| CN201820692U (en) * | 2010-07-21 | 2011-05-04 | 广西银河迪康电气有限公司 | Solid insulation high voltage circuit breaker post |
| CN201829435U (en) * | 2010-10-12 | 2011-05-11 | 上海精益电器厂有限公司 | Contact system for double-breakpoint circuit breaker with plastic shell |
| CN102456515A (en) * | 2010-10-20 | 2012-05-16 | 北京人民电器厂有限公司 | Multi-break plastic-shell type circuit breaker |
| CN102592903A (en) * | 2011-01-10 | 2012-07-18 | 北京人民电器厂有限公司 | Multi-breakpoint circuit breaker |
| CN203165658U (en) * | 2013-02-26 | 2013-08-28 | 上海精翊电器有限公司 | Zero-sequence current transformer for residual current circuit breaker |
| CN204204777U (en) * | 2014-08-13 | 2015-03-11 | 浙江天正电气股份有限公司 | A kind of circuit breaker with Novel arc extinguishing room |
| CN105119095A (en) * | 2015-09-07 | 2015-12-02 | 珠海雷特科技股份有限公司 | Solid, anti-slant, foldable and movable plug device |
| CN105810492A (en) * | 2016-04-08 | 2016-07-27 | 平高集团有限公司 | Circuit breaker |
| CN207489781U (en) * | 2017-09-26 | 2018-06-12 | 上海精益电器厂有限公司 | A kind of breaker with built-in type conductive plate |
-
2017
- 2017-09-26 CN CN201710884440.1A patent/CN109559942B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257399Y (en) * | 1995-12-25 | 1997-07-02 | 童莫建 | Energy-saving light-regulating pulling switch |
| KR20050110064A (en) * | 2004-05-17 | 2005-11-22 | 주식회사 비츠로테크 | Embeded vacuum interrupter in epoxy barrier for vacuum circuit breaker |
| CN201820692U (en) * | 2010-07-21 | 2011-05-04 | 广西银河迪康电气有限公司 | Solid insulation high voltage circuit breaker post |
| CN201829435U (en) * | 2010-10-12 | 2011-05-11 | 上海精益电器厂有限公司 | Contact system for double-breakpoint circuit breaker with plastic shell |
| CN102456515A (en) * | 2010-10-20 | 2012-05-16 | 北京人民电器厂有限公司 | Multi-break plastic-shell type circuit breaker |
| CN102592903A (en) * | 2011-01-10 | 2012-07-18 | 北京人民电器厂有限公司 | Multi-breakpoint circuit breaker |
| CN203165658U (en) * | 2013-02-26 | 2013-08-28 | 上海精翊电器有限公司 | Zero-sequence current transformer for residual current circuit breaker |
| CN204204777U (en) * | 2014-08-13 | 2015-03-11 | 浙江天正电气股份有限公司 | A kind of circuit breaker with Novel arc extinguishing room |
| CN105119095A (en) * | 2015-09-07 | 2015-12-02 | 珠海雷特科技股份有限公司 | Solid, anti-slant, foldable and movable plug device |
| CN105810492A (en) * | 2016-04-08 | 2016-07-27 | 平高集团有限公司 | Circuit breaker |
| CN207489781U (en) * | 2017-09-26 | 2018-06-12 | 上海精益电器厂有限公司 | A kind of breaker with built-in type conductive plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109559942A (en) | 2019-04-02 |
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