CN117612900B - Integrated magnetic latching relay - Google Patents
Integrated magnetic latching relay Download PDFInfo
- Publication number
- CN117612900B CN117612900B CN202410090403.3A CN202410090403A CN117612900B CN 117612900 B CN117612900 B CN 117612900B CN 202410090403 A CN202410090403 A CN 202410090403A CN 117612900 B CN117612900 B CN 117612900B
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- flat plate
- movable
- terminal
- reed
- latching relay
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 49
- 238000004804 winding Methods 0.000 claims description 11
- 239000012811 non-conductive material Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 12
- 238000004880 explosion Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
The application discloses an integrated magnetic latching relay belongs to magnetic latching relay technical field. The magnetic latching relay is characterized in that a magnetic circuit system is placed between a live wire inlet terminal and a live wire outlet terminal, a magnetic conduction piece is not rotary any more, but moves up and down along a straight line, a static leading-out end and a movable leading-out end are omitted, two static contacts are respectively riveted on the end face of the live wire terminal, and two movable contacts are respectively riveted on two movable reed movable parts which are opposite and are arranged at intervals of a movable reed of a C-shaped symmetrical structure, so that short circuit explosion can be effectively prevented. Compared with the existing magnetic latching relay, the magnetic latching relay has the advantages of saving materials, greatly reducing material cost, being simpler in manual production and having market competitiveness.
Description
Technical Field
The application belongs to the technical field of relays, and particularly relates to an integrated magnetic latching relay applied to a single-phase intelligent electric energy meter.
Background
The magnetic latching relay used by the current single-phase intelligent electric energy meter has strong market competition and requires low cost and excellent performance. However, the existing magnetic latching relay generally includes the following structure: the static contact is riveted with a static leading-out end, the movable contact is riveted with a movable reed group, and the movable reed group is riveted with the movable leading-out end to form a relay of an individual; the static leading-out end and the dynamic leading-out end of the relay are respectively connected with a fire wire inlet terminal and a fire wire outlet terminal of the main terminal block. The structure is complex, the materials are more, the material cost and the labor cost of the magnetic latching relay are high, the heat dissipation is poor, and the safety and the reliability of the product are difficult to ensure.
Disclosure of Invention
The embodiment of the application aims to provide an integrated magnetic latching relay, which greatly reduces the material cost and labor cost of a product, meets the use requirement, has less heating, good heat dissipation and safer and more reliable performance, and can solve at least one technical problem related in the background technology.
In order to solve the technical problems, the application is realized as follows:
the embodiment of the application provides an integration magnetism keeps relay, including main terminal row, main terminal row is including the live wire that sets up side by side interval advance the terminal and go out the terminal with the live wire advance the terminal with the live wire goes out the terminal the tip just to the movable reed subassembly that sets up and set up in the live wire advance the terminal with the live wire goes out the magnetic circuit between the terminal, wherein:
the movable reed assembly comprises a movable reed and two movable contacts, the movable reed comprises a reed body part and two opposite and spaced movable reed parts which are formed by respectively extending from two ends of the reed body part and reversely bending, the end faces of the live wire inlet terminal and the live wire outlet terminal, which are opposite to the movable reed, are respectively provided with a fixed contact, and the two movable contacts are respectively arranged on the two movable reed parts and are opposite to the two fixed contacts;
the magnetic circuit system comprises a coil assembly for generating a magnetic field and a magnetic conduction piece fixedly connected with the two reed movable parts, and the magnetic conduction piece is driven by the coil assembly to move so as to drive the movable contact to be closed or opened with the fixed contact.
As a further limitation of the present invention, the movable contact is fixed to the reed movable portion by caulking.
As a further limitation of the present invention, the magnetic circuit system further includes a first yoke, a second yoke, and a yoke connecting post, the first yoke including a first flat plate portion, a second flat plate portion, and a first connecting portion connecting the first flat plate portion and the second flat plate portion, which are arranged in parallel at intervals; the second yoke comprises a third flat plate part, a fourth flat plate part and a second connecting part, wherein the third flat plate part and the fourth flat plate part are arranged at intervals in parallel, the third flat plate part, the first flat plate part, the fourth flat plate part and the second flat plate part are arranged at intervals in parallel in sequence from top to bottom, and the yoke connecting column is positioned between the fourth flat plate part and the second flat plate part and fixedly connected with the fourth flat plate part and the second flat plate part.
As a further limitation of the present invention, the yoke connecting post is riveted to the second plate portion.
As a further limitation of the present invention, the coil assembly includes a bobbin sleeved on the yoke connecting post and a coil winding wound on the bobbin.
As a further limitation of the present invention, the magnetic conductive member includes a main body made of a non-conductive material, and a first armature and a second armature respectively fixed on the main body and arranged in parallel at intervals, the main body is fixedly connected with two movable spring pieces, the first armature is arranged between the first flat plate portion and the third flat plate portion, and the second armature is arranged between the first flat plate portion and the fourth flat plate portion.
As a further definition of the present invention, the magnetic conductive member further includes a permanent magnet disposed between and connecting the first armature and the second armature.
As a further definition of the present invention, the permanent magnet is integrally injection molded within the main body portion.
As a further definition of the invention, the non-conductive material is plastic.
As a further definition of the present invention, the main body portion, the first armature, the second armature, and the permanent magnet are integrally injection molded.
Compared with the prior art, the application has the following beneficial effects:
1. according to the magnetic circuit system, the magnetic circuit system is arranged between the live wire inlet terminal and the live wire outlet terminal of the main terminal block, and the magnetic conduction piece is not rotary any more, but moves up and down along a straight line, so that the space utilization rate is greatly improved, the static leading-out end and the dynamic leading-out end are omitted, and the whole loop is greatly shortened;
2. by arranging the movable reed with a C-shaped symmetrical structure, the short-circuit explosion is effectively prevented;
3. the circuit assembly formed by the movable reeds with the C-shaped symmetrical structure can resist repulsive force generated during large current impact by utilizing the Lorentz force of current, so that contact fitting under the condition of short circuit is more reliable;
4. because the static leading-out end and the movable leading-out end are omitted, the welding procedure of the static leading-out end and the movable leading-out end in the production process and the live wire terminal can be omitted, the procedure is simpler, and the production cost is reduced;
5. the live wire of this application advances terminal and live wire and goes out terminal part and expose outside to heat dispersion has effectively been promoted.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
fig. 1 is a schematic structural diagram of an integrated magnetic latching relay provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a configuration structure of a movable reed assembly, a magnetic circuit system, and a live wire inlet and outlet terminal provided in an embodiment of the present application;
fig. 3 is a schematic perspective view of a magnetic circuit structure according to an embodiment of the present disclosure;
FIG. 4 is a schematic cross-sectional view of the magnetic circuit structure shown in FIG. 3;
fig. 5 is a schematic structural diagram of a magnetizer according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a repulsive force between a movable reed assembly and a stationary contact according to an embodiment of the present application.
In the figure, 1, a main terminal block; 11. a live wire inlet terminal; 12. a live wire outlet terminal; 2. a movable reed assembly; 21. a movable reed; 211. a reed body portion; 212. a reed movable part; 22. a movable contact; 3. a magnetic circuit system; 31. a coil assembly; 311. a coil bobbin; 312. winding a coil; 32. a magnetic conductive member; 321. a main body portion; 322. a first armature; 323. a second armature; 324. a permanent magnet; 33. a first yoke; 331. a first flat plate portion; 332. a second flat plate portion; 333. a first connection portion; 34. a second yoke; 341. a third flat plate portion; 342. a fourth flat plate portion; 343. a second connecting portion; 35. yoke connecting columns; 4. a stationary contact; 5. and winding the coil.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Referring to fig. 1 and 2, the embodiment of the present application provides an integrated magnetic latching relay, which includes a main terminal row 1, where the main terminal row 1 includes a live wire inlet terminal 11 and a live wire outlet terminal 12 that are arranged in parallel at intervals, the integrated magnetic latching relay further includes a movable reed assembly 2 that is opposite to the ends of the live wire inlet terminal 11 and the live wire outlet terminal 12, and a magnetic circuit system 3 that is disposed between the live wire inlet terminal 11 and the live wire outlet terminal 12.
The movable spring assembly 2 comprises a movable spring 21 and two movable contacts 22.
The movable reed 21 includes a reed body 211 and two opposite reed movable parts 212 formed by bending in opposite directions and arranged at intervals, which extend from two ends of the reed body 211, so that the movable reed 21 forms a C-shaped symmetrical structure, and short-circuit explosion can be effectively prevented.
The end faces of the live wire inlet terminal 11 and the live wire outlet terminal 12, which are opposite to the movable reed 21, are respectively riveted with a fixed contact 4, and the two movable contacts 22 are respectively fixedly arranged on the two reed movable parts 212 and are respectively opposite to the two fixed contacts 4.
In one embodiment, the movable contact 22 is riveted to the movable reed part 212.
The magnetic circuit system 3 comprises a coil assembly 31 for generating a magnetic field and a magnetic conduction piece 32 fixedly connected with the two reed movable parts 212.
The magnetic conductive piece 32 is driven by the coil assembly 31 to move so as to drive the movable contact 22 to be closed or opened with the fixed contact 4.
Referring to fig. 3 and 4, in an embodiment, the magnetic circuit system 3 further includes a first yoke 33, a second yoke 34, and a yoke connecting post 35.
The first yoke 33 includes a first flat plate portion 331, a second flat plate portion 332, and a first connecting portion 333 connecting the first flat plate portion 331 and the second flat plate portion 332, which are arranged in parallel at a spaced apart interval, and the first flat plate portion 331, the second flat plate portion 332, and the first connecting portion 333 are integrally formed.
The second yoke 34 includes a third flat plate portion 341, a fourth flat plate portion 342, and a second connection portion 343 connecting the third flat plate portion 341 and the fourth flat plate portion 342, which are arranged in parallel at a spaced apart interval, and the third flat plate portion 341, the fourth flat plate portion 342, and the second connection portion 343 are integrally formed.
The third flat plate portion 341, the first flat plate portion 331, the fourth flat plate portion 342, and the second flat plate portion 332 are sequentially arranged in parallel at intervals from top to bottom.
The yoke connecting post 35 is located between the fourth flat plate portion 342 and the second flat plate portion 332 and fixedly connects the fourth flat plate portion 342 and the second flat plate portion 332.
The yoke connecting post 35 is integrally provided with the second yoke 34, and is fixed to the second flat plate 332 by caulking.
The coil assembly 31 includes a coil bobbin 311 sleeved on the yoke connecting post 35 and a coil winding 312 wound on the coil bobbin 311, and the coil winding 312 is an enameled wire.
In order to electrically connect the coil assembly 31 to an external power source, two coil winding pins 5 may be fixed on the second plate portion 332 before the coil assembly 31 is manufactured, and two ends of the coil winding 312 may be connected to the two coil winding pins 5, respectively.
Referring to fig. 5, the magnetic conductive member 32 includes a main body 321 made of a non-conductive material, and a first armature 322 and a second armature 323 respectively fixed on the main body 321 and arranged in parallel and spaced apart from each other.
The non-conductive material is plastic.
The main body 321 is fixedly connected to two movable reed parts 212, the first armature 322 is disposed between the first flat plate 331 and the third flat plate 341, and the second armature 323 is disposed between the first flat plate 331 and the fourth flat plate 342.
Thus, when a voltage in a certain direction is applied to the two coil winding pins 5, the magnetic field generated by the coil assembly 31 acts on the first yoke 33 and the second yoke 34, the first armature 322 of the magnetic conductive member 32 is attached to the third flat plate portion 341, and the second armature 323 is attached to the first flat plate portion 331, and the magnetic conductive member 32 moves upward. When opposite voltages are applied to the two coil winding pins 5, the magnetic field causes the first armature 322 to abut against the first flat plate 331, and the second armature 323 to abut against the fourth flat plate 342, and the magnetic conductive member 32 moves downward.
The movable reed assembly 2 can be driven to move by the up-and-down movement of the magnetic conduction piece 32, so that the movable contact 22 and the fixed contact 4 are closed or opened, and the state switching and the state holding of the magnetic latching relay are realized.
The magnetic circuit system 3 is arranged between the live wire inlet terminal 11 and the live wire outlet terminal 12 of the main terminal block 1, and the magnetic conduction piece 32 is not rotary any more, but moves up and down along a straight line, so that the space utilization rate is greatly improved, a static leading-out end and a dynamic leading-out end are omitted, and the whole loop is greatly shortened.
The magnetic conductive member 32 further includes a permanent magnet 324 disposed between the first armature 322 and the second armature 323 and connecting the first armature 322 and the second armature 323.
In one embodiment, the permanent magnet 324 is integrally molded within the body portion 321.
Further, the main body 321, the first armature 322, the second armature 323, and the permanent magnet 324 are integrally injection molded.
The working principle of the integrated magnetic latching relay provided by the embodiment of the application is as follows:
as shown in connection with fig. 6, current I passes from the live wire inlet terminal 11, through the movable reed assembly 2, and out the live wire outlet terminal 12. When a short circuit occurs in the circuit, the current is very large (generally thousands of amperes), and a very large repulsive force exists between the movable contact 22 and the stationary contact 4, and the repulsive force is denoted as F1, and when the repulsive force is larger than the holding force between the coil assembly 31 and the magnetic conductive member 32, the movable contact 22 and the stationary contact 4 are separated, and huge energy in the short circuit current is released on an air gap of the separated movable contact 22 and stationary contact 4, so that the problems of explosion damage of a relay, an electric energy meter and the like occur. In order to be safer and more reliable, the movable contact 22 is riveted with the movable spring 21, and then the C-shaped symmetrical structure is formed. The movable spring 21 always has equal current and opposite current, and when the current is large, the movable spring 21 also has repulsive lorentz force, and the repulsive force is denoted as F2.
The repulsive force between the movable contact 22 and the stationary contact 4 is denoted as F1, and the repulsive force in the movable spring 21 is denoted as F2. Since the stationary contact 4 is fixed to the live terminal and the live terminal is fixed to the main terminal block 1, the stationary contact 4 is stationary regardless of the repulsive force. The movable contact 22 receives two repulsive forces, the two repulsive forces are opposite in direction and basically consistent in size and can offset each other, so that the safe and reliable requirement of short-circuit explosion prevention is met.
Compared with the prior art, the application has the following beneficial effects:
1. according to the magnetic circuit system, the magnetic circuit system is arranged between the live wire inlet terminal and the live wire outlet terminal of the main terminal block, and the magnetic conduction piece is not rotary any more, but moves up and down along a straight line, so that the space utilization rate is greatly improved, the static leading-out end and the dynamic leading-out end are omitted, and the whole loop is greatly shortened;
2. by arranging the movable reed with a C-shaped symmetrical structure, the short-circuit explosion is effectively prevented;
3. the circuit assembly formed by the movable reeds with the C-shaped symmetrical structure can resist repulsive force generated during large current impact by utilizing the Lorentz force of current, so that the circuit and the contact joint under the condition of short circuit are more reliable;
4. because the static leading-out end and the movable leading-out end are omitted, the welding procedure of the static leading-out end and the movable leading-out end in the production process and the live wire terminal can be omitted, the procedure is simpler, and the production cost is reduced;
5. the part of the live wire inlet terminal and the live wire outlet terminal of the application is exposed outside, so that the heat dissipation performance is effectively improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Furthermore, it should be noted that the scope of the methods and systems in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (10)
1. The utility model provides an integration magnetism holds relay, includes the main terminal row, the main terminal row is including the live wire that sets up in the interval side by side advance the terminal and go out the terminal with the live wire advances the terminal with the end that the terminal goes out the live wire just to the movable reed subassembly that sets up and set up in the live wire advances the terminal with the magnetic circuit between the terminal goes out the live wire, wherein:
the movable reed assembly comprises a movable reed and two movable contacts, the movable reed comprises a reed body part and two opposite and spaced movable reed parts which are formed by respectively extending from two ends of the reed body part and reversely bending, the end faces of the live wire inlet terminal and the live wire outlet terminal, which are opposite to the movable reed, are respectively provided with a fixed contact, and the two movable contacts are respectively arranged on the two movable reed parts and are opposite to the two fixed contacts;
the magnetic circuit system comprises a coil assembly for generating a magnetic field and a magnetic conduction piece fixedly connected with the two reed movable parts, and the magnetic conduction piece is driven by the coil assembly to move so as to drive the movable contact to be closed or opened with the fixed contact.
2. The integrated magnetic latching relay according to claim 1, wherein said movable contact is fixed to said reed movable portion by caulking.
3. The integrated magnetic latching relay according to claim 2, wherein the magnetic circuit system further comprises a first yoke, a second yoke, and a yoke connecting post, the first yoke comprising a first flat plate portion, a second flat plate portion, and a first connecting portion connecting the first flat plate portion and the second flat plate portion, which are arranged in parallel at a spacing; the second yoke comprises a third flat plate part, a fourth flat plate part and a second connecting part, wherein the third flat plate part and the fourth flat plate part are arranged at intervals in parallel, the third flat plate part, the first flat plate part, the fourth flat plate part and the second flat plate part are arranged at intervals in parallel in sequence from top to bottom, and the yoke connecting column is positioned between the fourth flat plate part and the second flat plate part and fixedly connected with the fourth flat plate part and the second flat plate part.
4. The integrated magnetic latching relay according to claim 3, wherein said yoke connecting post is riveted to said second plate portion.
5. The integrated magnetic latching relay according to claim 3, wherein said coil assembly comprises a bobbin sleeved on said yoke connecting post and a coil winding wound on said bobbin.
6. The integrated magnetic latching relay according to claim 3 or 5, wherein said magnetic conductive member comprises a main body made of a non-conductive material, and a first armature and a second armature respectively fixed on said main body and arranged in parallel at intervals, said main body being fixedly connected to two movable spring pieces, said first armature being arranged between said first flat plate portion and said third flat plate portion, and said second armature being arranged between said first flat plate portion and said fourth flat plate portion.
7. The integrated latching magnetic relay of claim 6, wherein said magnetically permeable member further comprises a permanent magnet disposed between and connecting said first armature and said second armature.
8. The integrated magnetic latching relay according to claim 7, wherein said permanent magnet is integrally injection molded within said body portion.
9. The integrated magnetic latching relay of claim 7, wherein said non-conductive material is plastic.
10. The integrated magnetic latching relay according to claim 9, wherein said main body portion, said first armature, said second armature, and said permanent magnet are integrally injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410090403.3A CN117612900B (en) | 2024-01-23 | 2024-01-23 | Integrated magnetic latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410090403.3A CN117612900B (en) | 2024-01-23 | 2024-01-23 | Integrated magnetic latching relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117612900A CN117612900A (en) | 2024-02-27 |
| CN117612900B true CN117612900B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410090403.3A Active CN117612900B (en) | 2024-01-23 | 2024-01-23 | Integrated magnetic latching relay |
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| Country | Link |
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| CN (1) | CN117612900B (en) |
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| CN213752534U (en) * | 2020-10-30 | 2021-07-20 | 三友联众集团股份有限公司 | Reduce heavy current relay that catch bar is heated |
| CN216957908U (en) * | 2022-02-15 | 2022-07-12 | 长沙中坤电子科技有限责任公司 | Relay switch with double-contact structure |
| CN115083835A (en) * | 2022-08-19 | 2022-09-20 | 长沙中坤电子科技有限责任公司 | Integrated magnetic latching relay |
| CN218730666U (en) * | 2022-10-24 | 2023-03-24 | 广东顺德禾晨精密电子有限公司 | Anti-falling relay with framework |
| CN219979462U (en) * | 2023-06-29 | 2023-11-07 | 漳州宏发电声有限公司 | Double-pole single-throw magnetic latching electromagnetic relay |
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| CN117612900A (en) | 2024-02-27 |
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