CN216389244U - Hydraulic electromagnetic miniature circuit breaker - Google Patents
Hydraulic electromagnetic miniature circuit breaker Download PDFInfo
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- CN216389244U CN216389244U CN202123050481.1U CN202123050481U CN216389244U CN 216389244 U CN216389244 U CN 216389244U CN 202123050481 U CN202123050481 U CN 202123050481U CN 216389244 U CN216389244 U CN 216389244U
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- oil cup
- circuit breaker
- iron core
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005284 excitation Effects 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 4
- 238000004880 explosion Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram 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
- 230000006978 adaptation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The application provides a hydraulic electromagnetic type miniature circuit breaker, which comprises a release, wherein the release comprises an excitation assembly; the excitation assembly comprises an oil cup, an iron core and a coil, wherein the iron core is arranged in parallel with the oil cup; the coil has with the first end of oil cup winding, and with the second end of iron core winding, when the tripper inserts overcurrent through first end, the excitation subassembly produces a magnetic field on the oil cup of coil winding, produce a magnetic field on the iron core of coil winding, therefore the magnetic circuit of tripper is the closed magnetic circuit of oil cup and iron core parallel arrangement, through the structural arrangement of tripper, combine together with current miniature circuit breaker mechanisms such as L7, C65, improved hydraulic pressure electromagnetic circuit breaker mechanism unblock speed, optimized its utilization space in the circuit breaker inside simultaneously, make the area that the arc extinguishing system occupies increase, improve the breaking capacity of broken circuit, when inserting heavy current, reaction spring is overcome to the magnetic field that produces, the action of tripper pulling operating device, the instantaneous tripping operation of switch.
Description
Technical Field
The application relates to the technical field of circuit breakers, in particular to a hydraulic electromagnetic miniature 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 built-in electromagnetism release of prior art's circuit breaker, operating device and explosion chamber etc. the explosion chamber is the key mechanism who breaks off main circuit current in the circuit breaker, optimizes circuit breaker inner space utilization, and tender effectual explosion chamber that enlarges uses the size, consequently, to the rational planning usage space in the circuit breaker and combine advanced quick action mechanism, can effectual improvement circuit breaker's breaking capacity.
Disclosure of Invention
An object of the present application is to provide a hydraulic electromagnetic type miniature circuit breaker in view of the above problems.
The application provides a hydraulic electromagnetic type miniature circuit breaker, includes: the release comprises an excitation assembly;
the excitation assembly comprises an oil cup, an iron core and a coil, wherein the iron core is arranged in parallel with the oil cup;
the coil has a first end wound with the oil cup and a second end wound with the iron core.
Further, the number of turns of the coil wound on the oil cup and the iron core is equal.
Further, the rotation directions of the coil wound on the oil cup and the iron core are opposite.
Further, still include armature support, the oil cup is with armature support is detachable to be connected.
Furthermore, one end of the oil cup is provided with an oil cup cover, and the oil cup cover extends outwards from the edge of the oil cup;
the armature support is provided with a first open slot for inserting the oil cup and a bearing surface for bearing the oil cup cover, and a limiting hole for clamping the oil cup cover is arranged on one side of an opening of the first open slot, which is relatively far away from the armature support.
Further, one end of the iron core is vertically connected with a magnetic yoke, and the end of the magnetic yoke is provided with a through hole which penetrates through the end part of the oil cup.
Furthermore, the armature bracket is provided with a second open slot for inserting the iron core, and one end of the iron core, which is relatively far away from the magnetic yoke, is provided with a clamping slot clamped with the second open slot.
Furthermore, the magnetic field generator further comprises an armature, the central mass point of the armature is connected with the armature bracket through a hinge mechanism, and a reaction spring is connected between one end of the armature and the magnetic yoke.
Compared with the prior art, the beneficial effect of this application: a kind of hydraulic electromagnetic type miniature circuit breaker, including the release, the release includes the excitation assembly, the excitation assembly includes the oil cup, iron core parallel to oil cup, and twine coil with oil cup and said iron core separately; the coil has a first end wound with the oil cup and a second end wound with the iron core. When the tripper is connected with overload current through the first end, the excitation assembly generates a magnetic field on the oil cup wound by the coil, and a magnetic field is generated on the iron core wound by the coil, so that a magnetic loop of the tripper is a closed magnetic circuit formed by the oil cup and the iron core in parallel, and the tripper is structurally arranged and combined with the existing L7, C65 and other small circuit breaker mechanisms, so that the unlocking speed of the hydraulic electromagnetic circuit breaker mechanism is increased, meanwhile, the utilization space of the tripper in the circuit breaker is optimized, the occupied area of an arc extinguishing system is increased, the space utilization rate in the circuit breaker is improved, and the breaking capacity of the circuit breaker is improved.
Drawings
Fig. 1 is a schematic internal structural diagram of a hydraulic electromagnetic miniature circuit breaker according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of the release in fig. 1;
FIG. 3 is a schematic view of the armature support of FIG. 2 with the armature support removed;
FIG. 4 is a schematic view of the armature support;
fig. 5 is a schematic structural view of a metal stent.
The text labels in the figures are represented as:
10. armature bracket, 11, bottom plate; 12. a first side plate; 13. a second side plate; 14. a first open slot; 15. a limiting hole; 16. a second open slot; 20. an armature; 21. a counter-force spring; 30. an oil cup; 31. an oil cup cover; 40. a magnetic yoke; 50. an iron core; 60. a coil; 70. an arc extinguishing chamber; 80. a metal bracket; 81. a conductive plate; 82. a fixing plate; 90. a housing.
11. Detailed description of the preferred embodiments
The following detailed description of the present application is given for the purpose of enabling those skilled in the art to better understand the technical solutions of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.
Referring to fig. 1, the present embodiment provides a hydraulic electromagnetic miniature circuit breaker, as shown in fig. 1, the circuit breaker generally comprises a contact system, an arc extinguishing system, an operating mechanism, a release, a housing 90, and the like.
The operating device of circuit breaker includes tripping device and release, and the handle sets up the release top, and armature setting is in the release below, and the moving contact setting is in release one side, and operating device and tripping device set up the one side at release and handle, and the aforesaid occupies circuit breaker first half space, and subassembly such as explosion chamber and race arc way arc-blowing occupy circuit breaker latter half space.
When an external circuit connected with the circuit breaker is in short circuit, a magnetic field generated by large current overcomes a counter-force spring, a release pulls an operating mechanism to act, and a switch trips instantly. The larger the current, the shorter the operation time.
As shown in fig. 2, the trip unit includes an exciting assembly; the excitation assembly comprises an oil cup 30, an iron core 50 arranged in parallel with the oil cup 30, and a coil 60 respectively wound with the oil cup 30 and the iron core 50;
the coil 60 has a first end wound with the oil cup 30 and a second end wound with the core 50; the external circuit is provided with a first terminal and a second terminal, wherein the first terminal is connected with the first terminal, the second terminal is connected with the moving contact through the conducting plate, and the second terminal is connected with the static contact to form a complete conducting loop of the circuit breaker. When the trip unit is connected to an overcurrent through the first end, the exciting assembly generates a magnetic field on the oil cup 30 wound by the coil, and generates a magnetic field on the iron core 50 wound by the coil 60.
In the present embodiment, the coil 60 is wound on the oil cup 30 and the iron core 50 according to a certain number of turns, which is beneficial to adjusting the magnitude of the initial magnetic field strength and keeping the oil cup 30 and the iron core 50 highly consistent on the trip. The coils 60 are wound on the oil cup 30 and the iron core 50 in opposite directions, so that a magnetic circuit for closing the superposed magnetic field is formed.
In the preferred embodiment of the present embodiment, the number of turns of the coil 60 wound on the oil cup 30 and the iron core 50 is equal.
In the present embodiment, as shown in fig. 3, an armature holder 10 is further included;
one end of the oil cup 30 is coaxially fixed with the oil cup cover 31 in a spot welding mode, and the oil cup cover 31 extends outwards from the edge of the oil cup 30, so that the periphery of the oil cup cover 31 protrudes out of the periphery of the oil cup 30;
the armature bracket 10 is provided with a first open groove 14 for inserting the oil cup 30 and a bearing surface for bearing the oil cup cover 31, and a limiting hole 15 for clamping the oil cup cover 31 is arranged on one side of the armature bracket 10, which is relatively far away from the opening of the first open groove 14. The oil cup 30 is inserted into the first open slot 14, the oil cup cover 31 is overlapped on the end face of the armature support 10 close to the first open slot 14, meanwhile, one side of the oil cup cover 31 is clamped in the limiting hole 15, and the oil cup 30 cannot move up and down in the vertical direction due to the clamping of the oil cup cover 31 in the limiting hole 15, so that the oil cup 30 is fixed on the armature support 10.
It should be noted that, the height of the limiting hole 15 is the same as the thickness of the oil cup cover 31, so that the oil cup cover 31 can be clamped in the limiting hole 15.
In this embodiment, as shown in fig. 4, the armature bracket 10 includes a bottom plate 11, and a first side plate 12 and a second side plate 13 perpendicularly connected to two ends of the bottom plate 11, where the first side plate 12 and the second side plate 13 are an integrated structure with the bottom plate 11, a first open slot 14 is formed in the bottom plate 11 along a distance direction between the first side plate 12 and the second side plate 13, a limit hole 15 is formed in the second side plate 13, a first socket is formed at a position of the first side plate 12 corresponding to the limit hole 15, the first socket is communicated with an opening of the first open slot 14, the oil cup 30 is inserted into the first open slot 14 through the first socket by the oil cup cover 31, and the oil cup cover 31 is overlapped on an upper end surface of the bottom plate 11 and is clamped in the limit hole 15.
It should be noted that, the oil cup cover 31 realizes position limitation on the armature bracket 10 along the vertical direction through the first socket and the limiting hole 15, and ensures that the oil cup 30 is more stably fixed on the armature bracket 10.
In this embodiment, the yoke 40 is vertically connected to one end of the core 50, and the end surface of the yoke 40 has a through hole penetrating the end of the oil cup 30. One end of the oil cup 30 is clamped with the armature bracket 10, the other end is movably inserted with the through hole, the oil cup wound with the coil 60 and the iron core 50 form a magnetic field by being connected with the magnetic yoke 40, and form a closed magnetic circuit by being respectively connected with the armature 20.
In the present embodiment, the armature bracket 10 has a second opening groove 16 for inserting the core 50, and an end of the core 50 relatively far from the yoke 40 has a slot engaged with the second opening groove 16. The length between the iron core 50 and the magnetic yoke 42 after the armature support 10 is inserted into the iron core 50 is the same as the length of the oil cup 30 between the armature support 10 and the magnetic yoke 42, so that the height of the oil cup 30 is fixed and is consistent with the height of the iron core, the release is wound on the oil cup 30 and the iron core 50 through the double coils 60 with equal turns, the occupied space of the release in the breaker is smaller, the arc extinguish chamber 70 is ensured to occupy larger space in the breaker, the space utilization rate in the breaker is improved, the breaking capacity of the breaker is also improved, the size of the breaker is effectively controlled, and the 13 mm modulus is realized in a 63A rated shell frame.
In the embodiment, the magnetic circuit further comprises an armature 20, a central mass point of the armature 20 is connected with the armature bracket 10 through a hinge mechanism, and a reaction spring 21 is connected between one end of the armature 20 and the magnetic yoke 40. When the breaker is connected with overload current, an excitation assembly of the release forms a magnetic field, the oil cup cover 31 adsorbs one end of the armature 20, the other end of the armature 20 overcomes the pulling force of the counter spring 21 and strikes against a lock catch inclined plane of the tripping mechanism, the moving contact and the static contact are separated in an unlocking mode, electric arcs formed between the moving contact and the static contact enter an arc extinguishing chamber along an arc extinguishing channel to extinguish arcs, and finally a circuit is disconnected through the breaker.
In this embodiment, the hinge mechanism is disposed above the second open slot 16, so that the armature 20 close to the first open slot 14 forms a certain included angle with the end surface of the bottom plate 11, when the oil cup cover 31 has sufficient magnetism, the movable end of the armature 20 close to the first open slot 14 is attracted to the oil cup cover 31, when the oil cup cover 31 does not have magnetism or has insufficient magnetism, because the end of the armature 20 far away from the armature bracket 10 is fixed with the inside of the circuit breaker through the reaction spring, the reaction spring generates an acting force on the end of the armature 20, so that the movable end of the armature 20 is disposed above the oil cup cover 31, and the included angle formed at this time is the largest.
In the present embodiment, the hinge mechanism includes a connecting shaft provided between the first side plate 12 and the second side plate 13, and an arc-shaped groove provided on the armature 20 to be fitted to the connecting shaft. Two ends of the connecting shaft are respectively and vertically connected with the first side plate 12 and the second side plate 13, and the armature 20 is rotatably arranged at the bottom end of the connecting shaft through an arc-shaped groove.
It should be noted that one end of the armature 20 is fixed ON the magnetic yoke 40 through the reaction spring 21, or fixed at other fixed positions in the circuit breaker through the reaction spring 21, the reaction spring may also be designed as a torsion spring fixed ON the central rotating shaft of the armature 20, the reaction spring 21 mainly plays a role of exerting a certain elastic tension ON one end of the armature, when a large current is connected, the generated magnetic field overcomes the reaction spring, the release pulls the operating mechanism to act, the switch trips instantaneously, and the moment of tripping is that the handle swings from the switch ON to the switch OFF.
In this embodiment, the trip unit, the operating mechanism and the handle are fixedly disposed in the circuit breaker housing 90 through a metal bracket 80, the metal bracket 80 includes a conductive plate 81, a fixed plate 82, and a magnetic yoke 40 disposed between the conductive plate 81 and the fixed plate 82, the conductive plate 81 and the fixed plate 82 are respectively fixed to the magnetic yoke 40 by riveting, and the conductive plate 81 and the fixed plate 82 are connected by a rotating shaft.
The operating mechanism is a conventional small circuit breaker such as L7 or C65.
According to the hydraulic electromagnetic type miniature circuit breaker provided by the embodiment of the application, an oil cup and an iron core of an excitation assembly are arranged between a magnetic yoke 40 and an armature bracket 10 in parallel, one end of a coil 60 is wound on the oil cup 30, the other end of the coil 60 is wound on the iron core 50, when a large current is connected to one end of the coil 60 on the oil cup 30, the excitation assembly is connected with the magnetic yoke 40 and the armature bracket 10 to form a stable closed magnetic circuit, so that a release is attracted with an armature 20, a tripping mechanism acts, a moving contact and a contact of a moving and static system are unlocked through a connecting rod system, electric arcs generated in the separation process are extinguished through an arc extinguish chamber, and a main circuit is finally disconnected; the structure of the tripper is combined with the existing small-sized circuit breaker mechanisms such as L7 and C65, so that the unlocking speed of the hydraulic electromagnetic circuit breaker mechanism is increased, the utilization space in the circuit breaker is optimized, the occupied area of an arc extinguishing system is increased, and the breaking capacity of the circuit breaker is improved.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (7)
1. A hydraulic electromagnetic type small-sized circuit breaker, comprising:
the release comprises an excitation assembly;
the excitation assembly comprises an oil cup (30), an iron core (50) arranged in parallel with the oil cup (30), and a coil (60);
the coil (60) has a first end wound with the oil cup (30) and a second end wound with the iron core (50);
the coils (60) are wound on the oil cup (30) and the iron core (50) in opposite rotating directions.
2. The hydraulic electromagnetic type miniature circuit breaker according to claim 1, wherein said coil (60) is wound on said oil cup (30) and said iron core (50) by an equal number of turns.
3. The hydraulic electromagnetic miniature circuit breaker according to claim 1 further comprising an armature holder (10), wherein said oil cup (30) is detachably connected to said armature holder (10).
4. A hydraulic electromagnetic type small-sized circuit breaker according to claim 3,
one end of the oil cup (30) is provided with an oil cup cover (31), and the oil cup cover (31) extends outwards from the edge of the oil cup (30);
the armature support (10) is provided with a first open slot (14) for inserting the oil cup (30) and a bearing surface for bearing the oil cup cover (31), and a limiting hole (15) for clamping the oil cup cover (31) is arranged on one side of an opening of the first open slot (14) and relatively far away from the armature support (10).
5. The hydraulic electromagnetic type miniature circuit breaker according to claim 4, wherein a yoke (40) is vertically connected to one end of said core (50), and said yoke (40) has a through hole penetrating through an end of said oil cup (30).
6. The small-sized hydraulic electromagnetic circuit breaker according to claim 5, wherein the armature holder (10) has a second opening groove (16) for inserting the iron core (50), and an end of the iron core (50) relatively far away from the magnetic yoke (40) has a clamping groove for clamping with the second opening groove (16).
7. The small-sized hydraulic electromagnetic circuit breaker according to claim 6, further comprising an armature (20), wherein a central mass point of the armature (20) is connected with the armature bracket (10) through a hinge mechanism, and a reaction spring (21) is connected between one end of the armature (20) and the magnetic yoke (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123050481.1U CN216389244U (en) | 2021-12-07 | 2021-12-07 | Hydraulic electromagnetic miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123050481.1U CN216389244U (en) | 2021-12-07 | 2021-12-07 | Hydraulic electromagnetic miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216389244U true CN216389244U (en) | 2022-04-26 |
Family
ID=81222073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123050481.1U Active CN216389244U (en) | 2021-12-07 | 2021-12-07 | Hydraulic electromagnetic miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216389244U (en) |
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2021
- 2021-12-07 CN CN202123050481.1U patent/CN216389244U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240118 Address after: Room 421, No. 48, Sanjiadian East Street, Mentougou District, Beijing 102300 Patentee after: Beijing lianxun Weiye Technology Development Co.,Ltd. Address before: 301700 4th floor, west side, building 7, science and technology enterprise accelerator, No. 3, Tianrui Road, automobile industrial park, Wuqing District, Tianjin Patentee before: Beijing lianxun Weiye Technology Development Co.,Ltd. Tianjin Branch |
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| TR01 | Transfer of patent right |