CN219738854U - Magnetic latching direct current contactor - Google Patents
Magnetic latching direct current contactor Download PDFInfo
- Publication number
- CN219738854U CN219738854U CN202320790322.5U CN202320790322U CN219738854U CN 219738854 U CN219738854 U CN 219738854U CN 202320790322 U CN202320790322 U CN 202320790322U CN 219738854 U CN219738854 U CN 219738854U
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- magnetic
- contact assembly
- iron core
- movable contact
- cover plate
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000008358 core component Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a magnetic latching direct current contactor, comprising: a housing having a sealed space; the contact system is arranged in the upper cavity of the sealing space and comprises a fixed contact assembly and a movable contact assembly, and the movable contact assembly is positioned below the fixed contact assembly; the electromagnetic system is arranged in the lower cavity of the sealing space and comprises magnetic holding magnetic steel, a metal cover plate with a notch, a movable iron core and a coil winding arranged below the notch, wherein the magnetic holding magnetic steel is arranged along the periphery of the metal cover plate, the metal cover plate is positioned between the magnetic holding magnetic steel and the movable iron core, and the movable iron core is connected with the movable contact assembly through a transmission shaft so as to drive the movable contact assembly to be opened and closed with the fixed contact assembly. The beneficial effects are that: the utility model adopts the magnetic retaining steel, can keep the moving and static contacts in the closed state without continuously supplying power to the coil, and effectively reduces the energy consumption, thereby achieving the purpose of energy conservation; and the contactor has simple structure and is easy to install.
Description
Technical Field
The utility model relates to the technical field of contactors, in particular to a magnetic latching direct current contactor.
Background
The Contactor (Contactor) is an electric appliance which uses a coil to flow current to generate a magnetic field to close a contact so as to control a load, and the main control object is a motor, and can also be used for controlling other electric loads such as an electric heater, an illuminating lamp, an electric welder, a capacitor bank and the like. The contactor consists of an electromagnetic system (a movable iron core, a static iron core and a coil winding), a contact system (a movable contact and a static contact) and an arc extinguishing device. When the coil winding of the contactor is electrified, a strong magnetic field is generated, so that the static iron core generates electromagnetic attraction to attract the movable iron core and drive the contact to act, and the contact is closed; when the coil winding is powered off, the electromagnetic attraction force disappears, the movable iron core is released under the action of the spring, the contact is restored, and the movable contact are disconnected.
In the prior art, when the contactor works in a closed state, the coil needs to be continuously electrified to enable the contactor to be in the closed state all the time, namely the coil always has power consumption, and especially in the application occasions needing to be in the closed state for a long time, excessive energy consumption is caused.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a magnetic latching direct current contactor.
The technical problems solved by the utility model can be realized by adopting the following technical scheme:
a magnetically held dc contactor, comprising:
a housing having a sealed space;
the contact system is arranged in the upper cavity of the sealing space and comprises a fixed contact assembly and a moving contact assembly, and the moving contact assembly is positioned below the fixed contact assembly;
the electromagnetic system is arranged in the lower cavity of the sealing space and comprises magnetic retaining steel, a metal cover plate with a notch, a movable iron core and a coil winding arranged below the notch, wherein the magnetic retaining steel is arranged along the periphery of the metal cover plate, the metal cover plate is positioned between the magnetic retaining steel and the movable iron core, and the movable iron core is connected with the movable contact assembly through a transmission shaft so as to drive the movable contact assembly to be opened and closed with the fixed contact assembly.
Preferably, the housing comprises:
a metal housing having an upper end opening;
and the upper part of the sealing space of the insulating upper cover and the metal shell is provided with an upper cavity formed by an inner supporting cover.
Preferably, a sealing ring is arranged between the inner supporting cover and the insulating upper cover.
Preferably, a spring assembly is provided on the outer circumference of the transmission shaft, and the spring assembly includes:
the first clamp spring is arranged at the upper end of the transmission shaft and is positioned above the movable contact of the movable contact assembly;
the two ends of the first pressure spring are respectively abutted with the movable contact and the bottom of the upper cavity;
the two ends of the second pressure spring are respectively abutted against the metal cover plate and the movable iron core;
the second clamp spring is arranged at the lower end of the transmission shaft and is positioned below the movable iron core.
Preferably, the method further comprises: the gasket is sleeved on the transmission shaft and is positioned between the first pressure spring and the bottom of the upper cavity.
Preferably, the method further comprises: the guide plate is arranged at the bottom of the upper cavity and is provided with a through hole for the transmission shaft to penetrate.
Preferably, the side surface of the through hole extends downwards to form a bending part, and the metal cover plate is positioned between the bending part and the magnetic retaining steel.
Preferably, the method further comprises: the first magnetic steel is arranged in the upper cavity.
Preferably, the method further comprises: and the second magnetic steel is arranged in the upper cavity.
Preferably, the method further comprises: and the magnetic pole core component is arranged in the lower space between the movable iron core and the coil winding, and is connected with the bottom of the shell.
The technical scheme of the utility model has the advantages that:
according to the utility model, the magnetic retaining steel is adopted in the magnetic circuit system of the coil, so that the moving and static contacts can be kept in a closed state without continuously supplying power to the coil, the energy consumption is effectively reduced, and the purpose of energy conservation is achieved; and the magnetic retaining magnet steel is arranged along the periphery of the metal cover plate, namely, the magnetic retaining magnet steel is positioned above the coil, and the contactor is simple in structure and easy to install.
Drawings
FIG. 1 is a front cross-sectional view of a magnetically held DC contactor according to a preferred embodiment of the utility model;
FIG. 2 is a side cross-sectional view of a magnetically held DC contactor according to a preferred embodiment of the utility model;
FIG. 3 is a top view of a magnetically held DC contactor according to a preferred embodiment of the utility model;
FIG. 4 is a schematic view of the inside of a magnetically held DC contactor portion in accordance with a preferred embodiment of the present utility model;
fig. 5 is a top view of fig. 4 in accordance with a preferred embodiment of the present utility model.
The figure indicates:
1. an insulating upper cover; 2. an inner support cover; 3. a guide plate; 4. magnetically holding the magnetic steel; 5. a metal cover plate; 6. a transmission shaft; 71. starting a coil; 72. releasing the coil; 73. a coil common terminal; 74. a first coil access terminal; 75. a second coil access terminal; 8. a moving contact assembly; 9. a metal housing; 10. a seal ring; 11. a catheter cap; 12. a first magnetic steel; 13. a first clamp spring; 14. a first compression spring; 15. a gasket; 16. a movable iron core; 17. a second clamp spring; 18. a second compression spring; 19. a second magnetic steel; 20. and (3) a threaded hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1-5, in accordance with the preferred embodiment of the present utility model, in view of the above-mentioned problems of the prior art, there is now provided a magnetically held dc contactor comprising:
a housing having a sealed space;
the contact system is arranged in the upper cavity of the sealing space and comprises a fixed contact assembly and a movable contact assembly 8, and the movable contact assembly 8 is positioned below the fixed contact assembly;
the electromagnetic system is arranged in the lower cavity of the sealing space and comprises magnetic holding steel 4, a metal cover plate 5 with a notch, a movable iron core 16 and a coil winding arranged below the notch, wherein the magnetic holding steel 4 is arranged along the periphery of the metal cover plate 5, the metal cover plate 5 is positioned between the magnetic holding steel 4 and the movable iron core 16, and the movable iron core 16 is connected with a movable contact assembly 8 through a transmission shaft 6 so as to drive the movable contact assembly 8 to be opened and closed with the fixed contact assembly.
Specifically, in the embodiment, the magnetic retaining magnetic steel 4 is adopted in the magnetic circuit system of the coil, and the magnetic retaining magnetic steel is permanent magnetic steel, so that the moving contact and the fixed contact can be kept in a closed state by utilizing the magnetic retaining principle of the permanent magnetic steel without continuously supplying power to the coil, thereby effectively reducing energy consumption and achieving the purpose of energy conservation; and the magnetic retaining steel 4 is positioned above the coil, specifically along the periphery of the metal cover plate, so that the installation is easy, and the contactor product has a simple structure.
Furthermore, the metal cover plate can be made of iron materials.
Further, the upper end of the transmission shaft 6 extends out of the lower chamber and is embedded in the movable contact assembly 8, and the lower end of the transmission shaft 6 is embedded in the movable iron core 16.
As a preferred embodiment, wherein, as shown in fig. 1, the housing comprises:
a metal shell 9 with an opening at the upper end, wherein the metal shell 9 is an outer iron core;
the insulating upper cover 1 is fixed on the upper end opening in a sealing way, and an upper cavity formed by the inner supporting cover 2 is arranged at the upper part of the sealing space of the insulating upper cover 1 and the metal shell 9. Furthermore, the insulating upper cover can be made of ceramic materials.
Further, as shown in fig. 1, the insulating upper cover 1 is provided with a pipeline through hole through which a pipeline can be penetrated; the upper surface of the insulating upper cover 1 is also provided with a conduit cap 11 which closes the pipeline by welding or by screwing.
Further, as shown in fig. 3, the insulating upper cover 1 is further provided with threaded holes 20, and the two threaded holes 20 are symmetrically arranged.
In a preferred embodiment, a sealing ring 10 is provided between the inner support cover 2 and the insulating upper cover 1, and the sealing ring 10 may be made of rubber.
As a preferred embodiment, wherein, as shown in fig. 1 and 2, the outer circumference of the transmission shaft 6 is provided with a spring assembly comprising:
the first clamp spring 13 is arranged at the upper end of the transmission shaft 6 and is positioned above the movable contact of the movable contact assembly so as to prevent the movable contact assembly on the transmission shaft 6 from moving upwards and axially;
the second jump ring 17 is arranged at the lower end of the transmission shaft 6 and is positioned below the movable iron core 16 to prevent the movable iron core 16 on the transmission shaft 6 from moving downwards and axially.
As a preferred embodiment, wherein, as shown in fig. 2, the spring assembly further comprises:
the two ends of the first pressure spring 14 are respectively abutted with the movable contact and the bottom of the upper cavity;
and two ends of the second pressure spring 18 are respectively abutted against the metal cover plate 5 and the movable iron core 16.
Specifically, in this embodiment, when the coil winding is energized, under the combined action of the magnetic field generated by the movable iron core 16 and the magnetic field of the magnetic holding steel, the spring counter force of the first pressure spring 14 and the second pressure spring 18 is overcome, so as to drive the movable contact to move upwards, so that the movable contact contacts with the fixed contact, and the contactor circuit is turned on;
when the coil winding is powered off, the movable iron core 16 drives the movable contact to move downwards under the action of the spring force of the first pressure spring 14 and the second pressure spring 18, so that the movable contact is separated from the fixed contact, and the contactor circuit is disconnected.
Further, the first compression spring 14 is preferably a short compression spring. The second compression spring 18 is preferably a long compression spring.
As a preferred embodiment, as shown in fig. 2, the method further includes: the gasket 15 is sleeved on the transmission shaft 6, and the gasket 15 is positioned between the first pressure spring 14 and the bottom of the upper chamber.
Specifically, in this embodiment, the spacer is used to isolate the first compression spring 14, which is sleeved on the transmission shaft, from the bottom of the upper chamber, thereby enhancing the insulation performance.
As a preferred embodiment, as shown in fig. 1, the method further includes: the guide plate 3 is arranged at the bottom of the upper cavity, and the guide plate 3 is provided with a through hole for the transmission shaft 6 to pass through.
As a preferred embodiment, the side surface of the through hole extends downwards to form a bending part, and the metal cover plate 5 is positioned between the bending part and the magnetic retaining steel 4.
As a preferred embodiment, as shown in fig. 2, the method further includes: the first magnetic steel 12 is disposed in the upper chamber. The first magnetic steel 12 is used for arc extinction. Further, the first magnetic steel 12 is specifically small magnetic steel.
As a preferred embodiment, as shown in fig. 2, the method further includes: the second magnetic steel 19 is disposed in the upper chamber. The second magnetic steel 12 is used for arc extinction. Further, the second magnetic steel 19 is specifically large magnetic steel.
As a preferred embodiment, as shown in fig. 2, the method further includes: and a magnetic pole core assembly disposed in a lower space between the movable iron core 16 and the coil winding, the magnetic pole core assembly being connected to the bottom of the housing.
Further, the method further comprises the following steps: the sleeve 210 and the bearing 211, wherein the sleeve 210 and the bearing 211 form the magnetic pole core assembly, and the bearing 211 is cylindrical, is arranged in a central cavity of the coil winding and is sleeved outside the movable iron core 16; the sleeve 210 is in an inverted T shape as a whole, the upper end of the sleeve is cylindrical, the lower ends of the sleeve extend outwards to form discs respectively, the upper end of the sleeve 210 is arranged in the central cavity of the coil winding and sleeved outside the bearing 211, and the lower end of the sleeve is arranged between the lower end of the coil winding and the bottom of the metal shell 9. Because the sleeve 210 is arranged between the coil winding and the metal shell 9 (i.e. the outer iron core), after the coil is electrified, the movable iron core 16 moves upwards to be closed with the metal cover plate, and at the moment, the movable iron core 16 forms a coil closed magnetic circuit with the metal shell 9, the magnetic retaining magnet steel 4 and the metal cover plate 5 through the sleeve 210 and the bearing 211, so that the movable contact of the movable contact assembly 8 is driven to move upwards to be contacted with the fixed contact.
Further, the coil magnetic paths of the contactor are provided with 2 or more than 2 magnetic retaining steels.
Further, the coil winding includes 1 coil; or alternatively
The coil winding comprises 2 coils, in particular a start coil 71 and a release coil 72.
Further, the direction of the magnetic field generated by energizing the start coil 71 is the same as that of the magnetic field generated by the magnetic holding steel; the magnetic field generated by energizing the release coil 72 is opposite to the magnetic field generated by the holding magnet steel.
Further, as shown in fig. 3, the method further includes: the coil public end 73, the first coil access end 74 and the second coil access end 75 are led out to the upper surface of the shell from the notch of the metal cover plate 5 through the coil winding, the first coil access end 74 is connected with the starting coil 71, and the second coil access end 75 is connected with the releasing coil 72 and is used for applying voltage pulse signals to the coils.
Specifically, in this embodiment, the magnetic retaining steel 4 is placed above the coil, specifically, on the outer ring of the metal cover plate 5, and the metal cover plate 5 is made of iron.
When the coil winding comprises 2 coils, a first voltage pulse signal is applied to the starting coil 71, a magnetic circuit generates a magnetic field, the movable iron core 16 overcomes the spring counter force of the first pressure spring 14 and the second pressure spring 18 under the combined action of the magnetic field of the starting coil 71 and the magnetic field of the magnetic holding magnet steel, moves upwards, closes with the metal cover plate to close the magnetic circuit of the coil, drives the movable contact of the movable contact assembly 8 to move upwards, reliably contacts with the fixed contact, and conducts a circuit, and then the whole product keeps a suction state by the magnetic field of the magnetic holding magnet steel, the movable contact and the fixed contact keep reliably contact, and the coil does not need to be continuously electrified, so that the energy-saving purpose is achieved. When the contactor is required to break the circuit, only a second voltage pulse signal needs to be applied to the release coil 72 of the contactor, and the movable iron core 16 moves downwards under the action of the spring force to drive the movable contact to move downwards, so that the movable contact is separated from the fixed contact, and the circuit is broken.
When the coil winding can be provided with 1 coil, a first voltage pulse signal is applied to the coil, the contactor can attract and conduct the circuit, then the magnetic holding steel keeps the attracted state of the product, and the coil does not need to be continuously electrified, so that the energy-saving purpose is achieved. When the contactor is required to be disconnected, only a second voltage pulse signal is required to be applied to the coil of the contactor, and the second voltage pulse signal is opposite to the first voltage pulse signal, so that the contactor circuit is disconnected.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and drawings, and are intended to be included within the scope of the present utility model.
Claims (10)
1. A magnetically held dc contactor, comprising:
a housing having a sealed space;
the contact system is arranged in the upper cavity of the sealed space and comprises a fixed contact assembly and a movable contact assembly (8), and the movable contact assembly (8) is positioned below the fixed contact assembly;
the electromagnetic system is arranged in the lower cavity of the sealing space and comprises magnetic holding steel (4), a metal cover plate (5) with a notch, a movable iron core and a coil winding arranged below the notch, wherein the magnetic holding steel (4) is arranged along the periphery of the metal cover plate (5), the metal cover plate (5) is positioned between the magnetic holding steel (4) and the movable iron core, and the movable iron core is connected with the movable contact assembly (8) through a transmission shaft (6) so as to drive the movable contact assembly (8) to be opened and closed with the fixed contact assembly.
2. The magnetically held dc contactor according to claim 1, wherein the housing comprises:
a metal housing (9) having an upper end opening;
the insulating upper cover (1) is fixed on the upper end opening in a sealing mode, and an upper cavity formed by the inner supporting cover (2) is arranged at the upper portion of a sealing space of the insulating upper cover (1) and the metal shell (9).
3. The magnetically held dc contactor according to claim 2, characterized in that a sealing ring is provided between the inner support cover (2) and the insulating upper cover (1).
4. The magnetically held dc contactor according to claim 1, characterized in that the outer circumference of the drive shaft (6) is provided with a spring assembly comprising:
the first clamp spring (13) is arranged at the upper end of the transmission shaft (6) and is positioned above the movable contact of the movable contact assembly (8);
the two ends of the first pressure spring (14) are respectively abutted with the movable contact and the bottom of the upper cavity;
the two ends of the second pressure spring (18) are respectively abutted with the metal cover plate (5) and the movable iron core;
the second clamp spring (17) is arranged at the lower end of the transmission shaft (6) and is positioned below the movable iron core.
5. The magnetically held dc contactor according to claim 4, further comprising: the gasket (15) is sleeved on the transmission shaft (6), and the gasket (15) is positioned between the first pressure spring (14) and the bottom of the upper cavity.
6. The magnetically held dc contactor according to claim 1, further comprising: the guide plate (3) is arranged at the bottom of the upper cavity, and the guide plate (3) is provided with a through hole for the transmission shaft (6) to penetrate through.
7. The magnetic latching direct current contactor according to claim 6, wherein the side of the through hole extends downward to form a bent portion, and the metal cover plate (5) is located between the bent portion and the magnetic latching magnetic steel (4).
8. The magnetically held dc contactor according to claim 1, further comprising: and the first magnetic steel (12) is arranged in the upper cavity.
9. The magnetically held dc contactor according to claim 1, further comprising: and the second magnetic steel (19) is arranged in the upper cavity.
10. The magnetically held dc contactor according to claim 1, further comprising: and the magnetic pole core component is arranged in the lower space between the movable iron core and the coil winding, and is connected with the bottom of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320790322.5U CN219738854U (en) | 2023-04-11 | 2023-04-11 | Magnetic latching direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320790322.5U CN219738854U (en) | 2023-04-11 | 2023-04-11 | Magnetic latching direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738854U true CN219738854U (en) | 2023-09-22 |
Family
ID=88063124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320790322.5U Active CN219738854U (en) | 2023-04-11 | 2023-04-11 | Magnetic latching direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738854U (en) |
-
2023
- 2023-04-11 CN CN202320790322.5U patent/CN219738854U/en active Active
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