CN111524748A - Miniaturized 400A magnetic latching direct current contactor - Google Patents
Miniaturized 400A magnetic latching direct current contactor Download PDFInfo
- Publication number
- CN111524748A CN111524748A CN202010538915.3A CN202010538915A CN111524748A CN 111524748 A CN111524748 A CN 111524748A CN 202010538915 A CN202010538915 A CN 202010538915A CN 111524748 A CN111524748 A CN 111524748A
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- China
- Prior art keywords
- component
- contact
- direct current
- current contactor
- magnetic pole
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
Abstract
The invention discloses a miniaturized 400A magnetic latching direct current contactor, which is characterized in that: the direct current contactor comprises a direct current contactor body, the direct current contactor body comprises a housing, a contact system and an electromagnetic system, the contact system and the electromagnetic system are both arranged in the housing, the contact system comprises a base component, a static contact component and a movable contact component, the base component is arranged at the upper end of the housing, the static contact component is arranged on the base component, the movable contact component is arranged below the static contact component and moves up and down through the electromagnetic system to be contacted and attracted with the movable contact component, the electromagnetic system comprises an electromagnet component, the electromagnet component comprises a bottom plate, a yoke component, a coil rack, an iron core, a core rod, a magnetic pole seat and magnetic steel, a coil winding is arranged in a coil winding groove, the coil component is blocked in the yoke component through the bottom plate, the magnetic pole seat is arranged in the yoke component, the end face of the magnetic pole seat is matched with the lower end face, the other end is fixedly connected with the iron core. The scheme improves the advantages of small volume, light weight, low delay, low cost and energy conservation.
Description
Technical Field
The invention relates to a direct current contactor, in particular to a miniaturized 400A magnetic latching direct current contactor.
Background
The original magnetic latching direct current contactor is widely applied to the fields of communication, engineering machinery, frequency converters and the like, but the development of the field of communication is seriously controlled due to large volume, high delay and high cost of products.
With the rapid development of the 5G communication industry in China, the 5G base station needs to miniaturize 5G communication equipment based on the important characteristics of ultra-large bandwidth, high reliability, low time delay, low power consumption and large connection, and in order to meet the use requirement in the field of 5G communication, a magnetic latching direct current contactor with small volume, light weight, low delay, low cost and energy saving is developed.
In view of the above disadvantages, the present solution proposes improvements.
Disclosure of Invention
The invention provides a miniaturized 400A magnetic latching direct current contactor, which solves the problems existing in the use process in the prior art and can greatly promote the popularization of applications such as remote medical treatment, industrial control, automatic driving, smart cities, smart homes and the like.
The technical scheme of the invention is realized as follows:
miniaturized 400A magnetism keeps direct current contactor, its characterized in that: the direct current contactor comprises a direct current contactor body, the direct current contactor body comprises a housing, a contact system and an electromagnetic system, the contact system and the electromagnetic system are both arranged in the housing, the contact system comprises a base component, a fixed contact component and a movable contact component, the base component is arranged at the upper end of the housing, the fixed contact component is arranged on the base component, the movable contact component is arranged below the fixed contact component and moves up and down through the electromagnetic system to be contacted and attracted with the movable contact component, the electromagnetic system comprises an electromagnet component, the electromagnet component comprises a bottom plate, a yoke component, a coil frame, an iron core, a core rod, a magnetic pole base and magnetic steel, the coil frame is provided with a coil winding groove and a magnetic steel groove for installing the magnetic steel, the coil winding is arranged in the coil winding groove, the coil frame, the coil winding and the magnetic steel, and a magnetic pole seat is installed in the yoke assembly, the end surface of the magnetic pole seat is matched with the lower end surface of the iron core, one end of the core rod extends out of the bottom plate and is connected with the movable contact assembly, and the other end of the core rod is fixedly connected with the iron core.
Preferably, two coil winding grooves of the coil frame are provided, the magnetic steel grooves are positioned between the coil winding grooves, and the magnetic steel is symmetrically arranged in the magnetic steel grooves by taking the middle part of the coil frame as a center to form a double-magnetic-steel structure.
Preferably, the matching of the end face of the magnetic pole seat and the lower end face of the iron core means that: the end face of the magnetic pole seat is provided with a bowl-shaped open notch, and the lower end of the iron core is processed into a convex adaptive contact end.
Preferably, the bottom plate is provided with a magnetic pole block, the magnetic pole block is provided with a through hole for the core rod to penetrate through, the magnetic pole block is positioned above the iron core, the magnetic pole block is provided with an inner notch, and the upper end of the corresponding iron core is provided with a protrusion matched with the inner notch.
Preferably, the core, the pole piece and the pole seat are located on the same axis.
Preferably, the movable contact assembly comprises a movable contact piece, a contact spring, a contact bushing, a gasket and a split pin, the contact bushing is provided with an end part of a core rod through the gasket and the split pin, the movable contact piece is arranged on the end surface of the contact bushing, the movable contact piece is provided with a movable contact, the core rod is provided with a limit ring table, one end of the contact spring is fixed on the limit ring table through the gasket, and the other end of the contact spring is arranged on the lower end surface of the movable contact piece.
Preferably, the core rod is further provided with an upper bowl-shaped gasket and a lower bowl-shaped gasket, the upper bowl-shaped gasket and the lower bowl-shaped gasket are arranged oppositely, the upper bowl-shaped gasket is arranged on the contact bushing, the upper end of the contact spring is positioned on the upper bowl-shaped gasket, the lower bowl-shaped gasket is arranged above the gasket, and the lower end of the contact spring is positioned on the lower bowl-shaped gasket.
Preferably, the base assembly comprises a base and a locking assembly, the static contact assembly comprises a static contact column and a static contact point, and the static contact column is mounted on the base through the locking assembly.
Aiming at the current situation that the size of the 5G communication cabinet is limited, the contactor is required to be small in size, light in weight and strong in bearing capacity, in the scheme, an electromagnetic system of the contactor needs to be made small to drive a high-power load 400A multiplied by 60VDC, and a magnetic circuit (with the external dimension of 48.5 multiplied by 39 multiplied by 102 mm) is redesigned under a certain external dimension.
The design of the magnetic circuit is driven by a smaller coil and a permanent magnet with weaker magnetism, so that the contact area of the magnetic pole block, the iron core and the magnetic pole seat is increased, when the coil is excited by positive pulse, the attraction time is short, the main loop is quickly closed to respond, and the delay is low; when the coil is excited by negative pulses, the release time is short, the main loop is quickly cut off, the ablation of contact materials is reduced, the service life of the contact is prolonged, and the reliability is higher.
In conclusion, the magnetic latching direct current contactor is simple in structure, and through reasonable design, the magnetic latching direct current contactor is small in size, light in weight, low in delay, low in cost and energy-saving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a miniaturized 400A magnetically held DC contactor of the present invention;
FIG. 2 is a schematic diagram of a configuration of an electromagnetic system;
FIG. 3 is a schematic view of the core pin and base plate configuration;
FIG. 4 is a schematic structural view of a coil assembly;
FIG. 5 is a schematic view of the yoke assembly;
fig. 6 is a schematic structural view of the base assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 6, the present embodiment discloses a miniaturized 400A magnetically held dc contactor,
comprises a direct current contactor body, the direct current contactor body comprises a housing 1, a contact system and an electromagnetic system, the contact system and the electromagnetic system are both arranged in the housing, the contact system comprises a base component, a fixed contact component and a movable contact component, the base component is arranged at the upper end of the housing, the fixed contact component is arranged on the base component, the movable contact component is arranged below the fixed contact component and moves up and down through the electromagnetic system to realize contact and attraction with the movable contact component,
the electromagnetic system comprises an electromagnet assembly, the electromagnet assembly comprises a bottom plate 16, a yoke assembly 21, a coil frame 26, an iron core 19, a core bar 18, a magnetic pole seat 23 and magnetic steel 20, the coil frame 26 is provided with a coil winding groove 26-2 and a magnetic steel groove 26-1 for mounting the magnetic steel, the coil winding groove 26-2 is provided with a coil winding 27, the coil frame 26, the coil winding 27 and the magnetic steel 20 form a coil assembly 11, the coil assembly is sealed in the yoke assembly 21 through the bottom plate 16, the magnetic pole seat 23 is mounted in the yoke assembly 21, the end face of the magnetic pole seat 23 is matched with the lower end face of the iron core 19, one end of the core bar 18 extends out of the bottom plate 16 and is connected with the movable contact assembly, the other end of the core bar is fixedly connected with the iron core 19, and the yoke assembly.
Two coil winding grooves 26-2 of the coil frame are arranged, the magnetic steel grooves are positioned between the coil winding grooves, and the magnetic steel is symmetrically arranged in the magnetic steel grooves by taking the middle part of the coil frame as a center to form a double-magnetic-steel structure.
The matching of the end surface of the magnetic pole seat 23 and the lower end surface of the iron core 19 means that: the end face of the magnetic pole seat is provided with a bowl-shaped open notch 23-1, the lower end of the iron core is processed into a convex adaptive contact end 19-2, and the contact surface is a conical surface in the working process, so that the contact area of a magnetic circuit can be increased, and the electromagnetic attraction force is increased.
The bottom plate 16 is provided with a magnetic pole block 17, the magnetic pole block 17 is provided with a through hole 16-1 through which the core rod 18 penetrates, the magnetic pole block 17 is positioned above the iron core 19, the magnetic pole block is provided with an inner notch 17-1, the upper end of the corresponding iron core is provided with a bulge 19-1 matched with the inner notch, the contact surface is a conical surface in the working process, and the contact area of the magnetic loop is further increased, so that the electromagnetic attraction is increased.
In order to enhance the operational reliability, the iron core 19, the pole piece 17 and the pole holder 23 are located on the same axis.
The movable contact assembly comprises a movable contact piece 9, a contact spring 4, a contact bushing 10, a gasket 8 and a split pin 6, wherein the contact bushing 10 is provided with the end part of a core rod 18 through the gasket 8 and the split pin 6, the movable contact piece 9 is arranged on the end surface of the contact bushing 10, the movable contact piece 9 is provided with a movable contact 91, the core rod 18 is provided with a limit ring table 18-1, one end of the contact spring 4 is fixed on the limit ring table 91 through the gasket 2, and the other end of the contact spring is arranged on the lower end surface of the movable contact piece 9. The core rod is further provided with an upper bowl-shaped gasket 5 and a lower bowl-shaped gasket 2, the upper bowl-shaped gasket and the lower bowl-shaped gasket are arranged oppositely, the upper bowl-shaped gasket is arranged on the contact bushing, the upper end of the contact spring is located on the upper bowl-shaped gasket, the lower bowl-shaped gasket is arranged above the gasket, and the lower end of the contact spring is located on the lower bowl-shaped gasket.
The base component comprises a base 1-1 and a locking component, the static contact component comprises a static contact column 7 and a static contact point 71, the static contact column is installed on the base through the locking component, and the locking component comprises a flat pad 15, an elastic pad 14 and a nut 13 which are arranged from bottom to top.
The invention discloses a magnetic latching contactor which adopts a double-magnet steel structure, wherein the positive and negative pulse excitation of a coil is realized, and an iron core drives a moving contact and a static contact on a core rod to be closed, so that the disconnection time is short and the speed is high. The structure adopted for achieving the purpose is that the magnetic pole, the iron core and the magnetic pole seat are all contacted by taper surfaces, and the contact area of the magnetic loop is increased, so that the electromagnetic attraction is increased. The method specifically comprises the following steps: when the magnetic latching contactor adopts a double-magnet steel structure, the positive and negative pulses of the coil are excited, and the iron core drives the moving contact and the static contact on the core rod to be closed, so that the disconnection time is short and the speed is high. The structure adopted for achieving the purpose is that the magnetic pole, the iron core and the magnetic pole seat are all contacted by taper surfaces, and the contact area of the magnetic loop is increased, so that the electromagnetic attraction is increased.
The scheme is further explained as follows:
working principle; when the coil is excited by positive pulse, the iron core is disconnected with the magnetic pole seat and closed with the magnetic pole, and a moving contact and a static contact on the core rod are driven to be closed; when the coil is excited by negative pulse, the iron core is disconnected with the magnetic pole and closed with the magnetic pole seat, and the moving contact on the core rod is driven to be disconnected with the static contact.
Meanwhile, the invention also points out terms such as: the terms "front," "back," "vertical," "horizontal," and the like, as used herein, are intended to refer to an orientation or positional relationship as shown in the drawings for convenience in describing the invention and in order to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the scope of the invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. Miniaturized 400A magnetism keeps direct current contactor, its characterized in that: the direct current contactor comprises a direct current contactor body, the direct current contactor body comprises a housing, a contact system and an electromagnetic system, the contact system and the electromagnetic system are both arranged in the housing, the contact system comprises a base component, a fixed contact component and a movable contact component, the base component is arranged at the upper end of the housing, the fixed contact component is arranged on the base component, the movable contact component is arranged below the fixed contact component and moves up and down through the electromagnetic system to be contacted and attracted with the movable contact component, the electromagnetic system comprises an electromagnet component, the electromagnet component comprises a bottom plate, a yoke component, a coil frame, an iron core, a core rod, a magnetic pole base and magnetic steel, the coil frame is provided with a coil winding groove and a magnetic steel groove for installing the magnetic steel, the coil winding is arranged in the coil winding groove, the coil frame, the coil winding and the magnetic steel, and a magnetic pole seat is installed in the yoke assembly, the end surface of the magnetic pole seat is matched with the lower end surface of the iron core, one end of the core rod extends out of the bottom plate and is connected with the movable contact assembly, and the other end of the core rod is fixedly connected with the iron core.
2. The miniaturized 400A magnetically held direct current contactor of claim 1, wherein: the coil winding grooves of the coil frame are two, the magnetic steel grooves are positioned between the coil winding grooves, and the magnetic steel is symmetrically arranged in the magnetic steel grooves by taking the middle part of the coil frame as a center to form a double-magnetic steel structure.
3. The miniaturized 400A magnetically held direct current contactor of claim 1, wherein: the matching of the end face of the magnetic pole seat and the lower end face of the iron core means that: the end face of the magnetic pole seat is provided with a bowl-shaped open notch, and the lower end of the iron core is processed into a convex adaptive contact end.
4. The miniaturized 400A magnetically held direct current contactor of claim 1, wherein: the bottom plate is provided with a magnetic pole block, the magnetic pole block is provided with a through hole for the core rod to penetrate out, the magnetic pole block is positioned above the iron core, the magnetic pole block is provided with an inner notch, and the upper end of the corresponding iron core is provided with a bulge matched with the inner notch.
5. The miniaturized 400A magnetically held direct current contactor of claim 1, wherein: the iron core, the magnetic pole block and the magnetic pole seat are positioned on the same axis.
6. The miniaturized 400A magnetically held direct current contactor of any of claims 1 to 5, wherein: the movable contact assembly comprises a movable contact piece, a contact spring, a contact bushing, a gasket and a split pin, the contact bushing is provided with the end part of a core rod through the gasket and the split pin, the movable contact piece is arranged on the end face of the contact bushing, the movable contact piece is provided with a movable contact, the core rod is provided with a limit ring table, one end of the contact spring is fixed on the limit ring table through the gasket, and the other end of the contact spring is arranged at the lower end face of the movable contact piece.
7. The miniaturized 400A magnetically held direct current contactor of claim 6, wherein: the core rod is further provided with an upper bowl-shaped gasket and a lower bowl-shaped gasket, the upper bowl-shaped gasket and the lower bowl-shaped gasket are arranged oppositely, the upper bowl-shaped gasket is arranged on the contact bushing, the upper end of the contact spring is positioned on the upper bowl-shaped gasket, the lower bowl-shaped gasket is arranged above the gasket, and the lower end of the contact spring is positioned on the lower bowl-shaped gasket.
8. The miniaturized 400A magnetically held direct current contactor of claim 1, wherein: the base component comprises a base and a locking component, the static contact component comprises a static contact column and a static contact point, and the static contact column is installed on the base through the locking component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538915.3A CN111524748A (en) | 2020-06-13 | 2020-06-13 | Miniaturized 400A magnetic latching direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538915.3A CN111524748A (en) | 2020-06-13 | 2020-06-13 | Miniaturized 400A magnetic latching direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111524748A true CN111524748A (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010538915.3A Pending CN111524748A (en) | 2020-06-13 | 2020-06-13 | Miniaturized 400A magnetic latching direct current contactor |
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| CN (1) | CN111524748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116844919A (en) * | 2023-09-01 | 2023-10-03 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
-
2020
- 2020-06-13 CN CN202010538915.3A patent/CN111524748A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116844919A (en) * | 2023-09-01 | 2023-10-03 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
| CN116844919B (en) * | 2023-09-01 | 2024-01-16 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
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