CN114093695A - High-voltage direct-current relay with auxiliary contacts - Google Patents

High-voltage direct-current relay with auxiliary contacts Download PDF

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Publication number
CN114093695A
CN114093695A CN202111114966.4A CN202111114966A CN114093695A CN 114093695 A CN114093695 A CN 114093695A CN 202111114966 A CN202111114966 A CN 202111114966A CN 114093695 A CN114093695 A CN 114093695A
Authority
CN
China
Prior art keywords
auxiliary
plastic body
shaped
leading
reed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111114966.4A
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Chinese (zh)
Inventor
钟叔明
陈金品
代文广
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hongfa Electric Power Controls Co Ltd
Original Assignee
Xiamen Hongfa Electric Power Controls Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Hongfa Electric Power Controls Co Ltd filed Critical Xiamen Hongfa Electric Power Controls Co Ltd
Priority to CN202111114966.4A priority Critical patent/CN114093695A/en
Publication of CN114093695A publication Critical patent/CN114093695A/en
Priority to US17/950,256 priority patent/US12009172B2/en
Priority to EP22197257.3A priority patent/EP4156222A1/en
Priority to JP2022151329A priority patent/JP7546017B2/en
Priority to KR1020220120174A priority patent/KR20230043059A/en
Priority to US18/665,019 priority patent/US20240297008A1/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32Insulating body insertable between contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/541Auxiliary contact devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/56Contact spring sets

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)

Abstract

The invention discloses a high-voltage direct-current relay with an auxiliary contact, which comprises a ceramic cover, a main contact leading-out end, a push rod assembly, a driving reed, an auxiliary contact leading-out end and an auxiliary movable reed, wherein the ceramic cover is provided with a first contact hole and a second contact hole; the main contact leading-out end and the auxiliary contact leading-out end are respectively fixed on the top wall of the ceramic cover and extend the bottom ends into the cavity of the ceramic cover, and the active spring leaf and the auxiliary movable spring leaf are respectively matched with the corresponding bottom ends of the main contact leading-out end and the auxiliary contact leading-out end; the two auxiliary contact leading-out ends are distributed on two sides of a connecting line between the two main contact leading-out ends, and the auxiliary movable spring piece is also connected with a plastic body; and plastic retaining walls are respectively arranged between two sides of the plastic body corresponding to two ends of the auxiliary movable spring leaf and the leading-out end of the main contact. The invention can prevent the electric arc generated when the movable and static contacts are separated from polluting the auxiliary contact structure, and can realize the insulation between strong and weak electricity; and the auxiliary movable spring can be prevented from being polluted or deformed due to the fact that the auxiliary movable spring is touched in the assembling and transferring process.

Description

High-voltage direct-current relay with auxiliary contacts
Technical Field
The invention relates to the technical field of relays, in particular to a high-voltage direct-current relay with an auxiliary contact.
Background
A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like. The high-voltage direct-current relay in the prior art mostly adopts a movable spring direct-acting (also called solenoid direct-acting) scheme, a contact part of the direct-current relay comprises two static contacts and a movable assembly, the movable assembly comprises a movable spring part and a push rod assembly, the movable spring part comprises a movable spring and movable contacts at two ends of the movable spring, the movable spring is in a direct-acting type, when the movable contacts at two ends of the movable spring are respectively contacted with the two static contacts (namely a load leading-out end), current flows in from one static contact, and flows out from the other static contact after passing through the movable spring. With the rapid development of new energy, the novel energy source is applied to the fields of new energy automobiles, charging matching equipment, photovoltaic/wind energy power generation systems, engineering vehicles, UPS (uninterrupted Power supply) and the like. In the vehicle-mounted market, the mileage of demand is higher and higher, so to optimize the space utilization of battery as far as possible, what more adopted to the relay adhesion earlier stage is the high pressure to examining, and more customers need relay self to have the auxiliary contact function at present. In the high-voltage direct-current relay with the auxiliary contacts in the prior art, two auxiliary contact leading-out ends are fixed at the top wall of a ceramic cover, the bottom ends of the two auxiliary contact leading-out ends extend into a cavity of the ceramic cover, the two auxiliary contact leading-out ends are symmetrically distributed between two static contacts (namely main static contacts), when the main contacts are disconnected, electric arcs are generated, and metal particles with larger heat are irregularly scattered in a ceramic inner cavity after the electric arcs are disconnected, so that the auxiliary contact structure is polluted and can be ablated and damaged seriously, and the use function of the auxiliary contact structure is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the high-voltage direct-current relay with the auxiliary contact, and through structural improvement, the high-voltage direct-current relay can prevent the auxiliary contact structure from being polluted by electric arcs generated when a movable contact and a fixed contact are separated, and can realize the insulation between strong current and weak current; meanwhile, the auxiliary movable spring can be prevented from being polluted or deformed due to the fact that the auxiliary movable spring is touched in the assembling and transferring process.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-voltage direct-current relay with an auxiliary contact comprises a ceramic cover, a main contact leading-out end, a push rod assembly, a driving reed, an auxiliary contact leading-out end and an auxiliary movable reed; the two main contact leading-out ends and the two auxiliary contact leading-out ends are respectively fixed on the top wall of the ceramic cover and extend the respective bottom ends into the cavity of the ceramic cover, the driving reed is arranged at the top of the push rod component, and the two ends of the driving reed are respectively matched with the bottom ends of the two main contact leading-out ends; the two auxiliary contact leading-out ends are distributed on two sides of a connecting line between the two main contact leading-out ends, the auxiliary movable spring is arranged at the top end of the push rod component, and two ends of the auxiliary movable spring are respectively matched with the bottom ends of the two auxiliary contact leading-out ends; the auxiliary moving reed is also connected with a plastic body; in the plastic body, plastic retaining walls are respectively arranged between two sides corresponding to two ends of the auxiliary movable reed and the leading-out end of the main contact, so that the retaining walls are utilized to prevent the auxiliary contact structure from being polluted by electric arcs generated when the movable and fixed contacts are separated.
And a connecting line between the two auxiliary contact leading-out ends is vertically crossed with a connecting line between the two main contact leading-out ends.
The midpoint of the connecting line between the two auxiliary contact leading-out ends is intersected with the midpoint of the connecting line between the two main contact leading-out ends.
The plastic body includes with the middle plastic body of the middle part parcel of supplementary movable reed wherein and the U-shaped plastic body of connection in the both sides of middle plastic body, the diapire of the U-shaped of two U-shaped plastic bodies respectively with the both sides of middle plastic body link into an integrated entity, the both sides wall of the U-shaped of two U-shaped plastic bodies disposes respectively the both sides of the width at the both ends of supplementary movable reed, in order to constitute the barricade.
The plastic body further comprises a bottom plastic body, and the bottom plastic body is connected to the bottom surfaces of the middle plastic body and the U-shaped plastic body, so that the auxiliary movable reed and the lower active reed are insulated from each other.
The push rod assembly comprises a U-shaped support and a spring, and the active reed is abutted against the inner side of the top wall of the U-shaped support through the spring; the bottom plastic body is further connected with a fixing sheet, and the plastic body is fixed on the top wall of the U-shaped support through the fixing sheet.
The fixing piece is provided with a convex bract protruding downwards, and the fixing piece is riveted and fixed with the U-shaped support through the convex bract.
In the middle plastic body, first notches are formed in positions corresponding to two side walls of the U shape of the U-shaped plastic body.
And in the two ends of the auxiliary movable spring leaf, a U-shaped bending part for increasing the elasticity of the two ends of the auxiliary movable spring leaf is further arranged at the joint close to the U-shaped bottom wall of the U-shaped plastic body, and the U-shaped opening of the U-shaped bending part faces downwards.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, plastic retaining walls are respectively arranged between two sides corresponding to two ends of the auxiliary movable spring and the leading-out end of the main contact in the plastic body connected with the auxiliary movable spring. The structure of the invention can utilize the plastic retaining wall to prevent the electric arc generated when the movable contact and the static contact are separated from polluting the auxiliary contact structure.
2. The invention adopts the plastic body comprising a middle plastic body which wraps the middle part of the auxiliary movable spring plate, U-shaped plastic bodies connected with two sides of the middle plastic body and a bottom plastic body; and the U-shaped bottom walls of the two U-shaped plastic bodies are respectively connected with the two sides of the middle plastic body into a whole, the two side walls of the U-shaped of the two U-shaped plastic bodies are respectively arranged on the two sides of the width of the two ends of the auxiliary movable spring piece so as to form the retaining wall, and the bottom plastic bodies are connected with the bottom surfaces of the middle plastic body and the U-shaped plastic bodies. According to the structure, two ends of the auxiliary movable reed are enclosed in the area enclosed by the U-shaped plastic body and the bottom plastic body, so that the auxiliary movable reed and the lower active reed are insulated from each other; meanwhile, the auxiliary movable spring can be prevented from being polluted or deformed due to the fact that the auxiliary movable spring is touched in the assembling and transferring process.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the high-voltage direct-current relay with the auxiliary contacts according to the present invention is not limited to the embodiment.
Drawings
FIG. 1 is a schematic diagram of a partial structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of an embodiment of the invention (without the ceramic cover and frame piece);
FIG. 3 is a top view of a partial structure of an embodiment of the invention (without the ceramic cover and frame piece);
FIG. 4 is a schematic perspective view of the push rod assembly of the embodiment of the present invention in cooperation with the auxiliary movable spring, the plastic body, and the fixing piece;
FIG. 5 is an exploded perspective view of the push rod assembly of the embodiment of the present invention, in cooperation with the auxiliary movable spring, the plastic body, and the fixing piece;
FIG. 6 is an exploded front view of the push rod assembly of the embodiment of the present invention in cooperation with the auxiliary movable spring plate, the plastic body, and the fixing plate;
FIG. 7 is a schematic perspective view of the auxiliary movable spring, the plastic body and the fixing piece of the embodiment of the present invention;
FIG. 8 is a front view of the auxiliary movable spring, plastic body and stationary plate in cooperation with one another according to the embodiment of the present invention;
FIG. 9 is a plan view of the auxiliary movable spring, plastic body and stationary plate of the embodiment of the present invention in cooperation;
FIG. 10 is a side view of the auxiliary movable spring, plastic body and stationary plate of the embodiment of the present invention in cooperation;
FIG. 11 is an exploded perspective view of the auxiliary movable spring, the plastic body and the stationary plate of the embodiment of the present invention;
FIG. 12 is a schematic perspective view of a fixing sheet according to an embodiment of the invention;
FIG. 13 is a front view of a securing sheet of an embodiment of the invention;
FIG. 14 is a top view of a securing tab of an embodiment of the present invention;
FIG. 15 is a side view of a securing sheet of an embodiment of the invention.
Detailed Description
Examples
Referring to fig. 1 to 7, the high-voltage direct-current relay with the auxiliary contact comprises a ceramic cover 1, a main contact leading-out end 2, a push rod assembly 3, a driving reed 4, an auxiliary contact leading-out end 5 and an auxiliary movable reed 6; the two main contact leading-out terminals 2 and the two auxiliary contact leading-out terminals 5 are respectively fixed at the top wall 11 of the ceramic cover 1 and extend the respective bottom ends into the cavity of the ceramic cover 1, and the ceramic cover 1 consists of the top wall 11 and the side wall 12; the active reed 4 is arranged at the top of the push rod component 3, and two ends (namely active contacts) of the active reed 4 are respectively matched with the bottom ends (namely main static contacts) of the two main contact leading-out ends 2; the two auxiliary contact leading-out ends 5 are distributed at two sides of a connecting line between the two main contact leading-out ends 2, the auxiliary movable spring leaf 6 is arranged at the top end of the push rod component 3, the movable contacts 62 are respectively arranged at two ends of the auxiliary movable spring leaf 6, and the movable contacts 62 at two ends of the auxiliary movable spring leaf 6 are respectively matched with the bottom ends (namely auxiliary static contacts) of the two auxiliary contact leading-out ends; the auxiliary movable reed 6 is also connected with a plastic body 7; in the plastic body 7, plastic retaining walls 71 are respectively arranged between two sides corresponding to two ends of the auxiliary movable spring 6 and the main contact leading-out end 2, so that the retaining walls 71 are utilized to block the pollution of electric arcs generated when the movable contact and the fixed contact are separated to the auxiliary contact structure.
In this embodiment, a connection line between the two auxiliary contact leading-out terminals 5 is vertically intersected with a connection line between the two main contact leading-out terminals 2.
In this embodiment, the midpoint of the connection line between the two auxiliary contact leading-out terminals 5 intersects with the midpoint of the connection line between the two main contact leading-out terminals 2.
In this embodiment, the plastic body 7 includes a middle plastic body 72 for wrapping the middle portion of the auxiliary movable spring 6 therein and U-shaped plastic bodies 73 connected to both sides of the middle plastic body, the U-shaped bottom walls of the two U-shaped plastic bodies 73 are respectively connected to both sides of the middle plastic body 72 to form a whole, and both U-shaped side walls of the two U-shaped plastic bodies 73 are respectively disposed on both sides of the width of both ends of the auxiliary movable spring 6 to form the retaining wall 71.
In this embodiment, the plastic body 7 further comprises a bottom plastic body 74, and the bottom plastic body 74 is connected to the bottom surfaces of the middle plastic body 72 and the U-shaped plastic body 73 so as to insulate the auxiliary movable spring 6 from the lower active spring 4.
In this embodiment, the push rod assembly 3 includes a U-shaped bracket 31 and a spring 32, and the active reed 4 is abutted against the inner side of the top wall of the U-shaped bracket 31 through the spring 32; the bottom plastic body 74 is further connected with a fixing sheet 81, and the plastic body 7 is fixed on the upper surface of the top wall of the U-shaped bracket 31 through the fixing sheet 81.
In this embodiment, the fixing plate 81 is provided with a protrusion 811 protruding downward, and the fixing plate 81 is fixed to the U-shaped bracket 31 by riveting the protrusion 811.
In this embodiment, the middle plastic body 72 is provided with first notches 721 at positions corresponding to two side walls of the U shape of the U-shaped plastic body 73.
In this embodiment, the auxiliary movable spring 6 further has U-shaped bent portions 61 for increasing the elasticity of the two ends of the auxiliary movable spring at the positions close to the junctions with the U-shaped bottom walls of the U-shaped plastic body 73, and the U-shaped openings of the U-shaped bent portions 61 are directed downward.
When the plastic body 7, the auxiliary movable reed 6 and the fixing piece 81 are combined, the auxiliary movable reed 6 and the fixing piece 81 can be fixed in the plastic body 7 in an insert injection molding mode when the plastic body 7 is formed; or the plastic body 7 is molded and injected, and then the auxiliary movable spring 6 and the fixing piece 81 are arranged on the plastic body 7; the middle plastic body 72, the U-shaped plastic body 73, a part of the bottom plastic body 74 and the auxiliary movable spring 6 of the plastic body 7 can be formed into one part by insert molding, the other part of the bottom plastic body 74 and the fixing piece 81 can be formed into the other part by insert molding, and then the two parts are assembled together.
According to the high-voltage direct-current relay with the auxiliary contacts, the push rod assembly 3 further comprises a spring seat 33, a fixing piece 34 and a push rod 35, the spring seat 33 is formed in an insert injection molding mode, the fixing piece 34 and the push rod 35 are fixed in the spring seat 33 during injection molding, and two side walls of the U-shaped support 31 are respectively connected with the fixing piece 34; the high-voltage direct-current relay further comprises a frame piece 82, a yoke plate 83, a movable iron core 84, a return spring 85, an anti-short circuit ring 86 and the like.
The high-voltage direct-current relay with the auxiliary contacts adopts the plastic body 7 connected with the auxiliary movable spring 6, and plastic retaining walls 71 are respectively arranged between two sides corresponding to two ends of the auxiliary movable spring 6 and the main contact leading-out end 2. The structure of the invention can utilize the plastic retaining wall 71 to prevent the pollution of electric arcs generated when the movable contact and the static contact are separated to the auxiliary contact structure.
The high-voltage direct-current relay with the auxiliary contact adopts the plastic body 7 which comprises a middle plastic body 72 for wrapping the middle part of the auxiliary movable spring plate, a U-shaped plastic body 73 connected with the two sides of the middle plastic body and a bottom plastic body 74; the U-shaped bottom walls of the two U-shaped plastic bodies 73 are respectively connected with two sides of the middle plastic body 72 into a whole, two U-shaped side walls of the two U-shaped plastic bodies 73 are respectively arranged on two sides of the width of two ends of the auxiliary movable spring 6 to form the retaining wall 71, and the bottom plastic body 74 is connected with the bottom surfaces of the middle plastic body 72 and the U-shaped plastic bodies 73. According to the structure of the invention, two ends of the auxiliary movable reed 6 are enclosed in the area enclosed by the U-shaped plastic body 73 and the bottom plastic body 74, so that the auxiliary movable reed 6 and the lower active reed 2 are insulated from each other; meanwhile, the auxiliary movable spring can be prevented from being polluted or deformed due to the fact that the auxiliary movable spring is touched in the assembling and transferring process.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (9)

1. A high-voltage direct-current relay with an auxiliary contact comprises a ceramic cover, a main contact leading-out end, a push rod assembly, a driving reed, an auxiliary contact leading-out end and an auxiliary movable reed; the two main contact leading-out ends and the two auxiliary contact leading-out ends are respectively fixed on the top wall of the ceramic cover and extend the respective bottom ends into the cavity of the ceramic cover, the driving reed is arranged at the top of the push rod component, and the two ends of the driving reed are respectively matched with the bottom ends of the two main contact leading-out ends; the method is characterized in that: the two auxiliary contact leading-out ends are distributed on two sides of a connecting line between the two main contact leading-out ends, the auxiliary movable spring is arranged at the top end of the push rod component, and two ends of the auxiliary movable spring are respectively matched with the bottom ends of the two auxiliary contact leading-out ends; the auxiliary moving reed is also connected with a plastic body; and plastic retaining walls are respectively arranged between two sides corresponding to two ends of the auxiliary movable spring and the leading-out end of the main contact in the plastic body.
2. The hvdc relay with auxiliary contacts of claim 1, wherein: and a connecting line between the two auxiliary contact leading-out ends is vertically crossed with a connecting line between the two main contact leading-out ends.
3. The hvdc relay with auxiliary contacts of claim 2, wherein: the midpoint of the connecting line between the two auxiliary contact leading-out ends is intersected with the midpoint of the connecting line between the two main contact leading-out ends.
4. The hvdc relay with auxiliary contacts of claim 1, wherein: the plastic body includes with the middle plastic body of the middle part parcel of supplementary movable reed wherein and the U-shaped plastic body of connection in the both sides of middle plastic body, the diapire of the U-shaped of two U-shaped plastic bodies respectively with the both sides of middle plastic body link into an integrated entity, the both sides wall of the U-shaped of two U-shaped plastic bodies disposes respectively the both sides of the width at the both ends of supplementary movable reed, in order to constitute the barricade.
5. The HVDC relay with auxiliary contact of claim 4, wherein: the plastic body further comprises a bottom plastic body, and the bottom plastic body is connected to the bottom surfaces of the middle plastic body and the U-shaped plastic body, so that the auxiliary movable reed and the lower active reed are insulated from each other.
6. The HVDC relay with auxiliary contact of claim 5, wherein: the push rod assembly comprises a U-shaped support and a spring, and the active reed is abutted against the inner side of the top wall of the U-shaped support through the spring; the bottom plastic body is further connected with a fixing sheet, and the plastic body is fixed on the top wall of the U-shaped support through the fixing sheet.
7. The HVDC relay with auxiliary contact of claim 6, wherein: the fixing piece is provided with a convex bract protruding downwards, and the fixing piece is riveted and fixed with the U-shaped support through the convex bract.
8. The HVDC relay with auxiliary contact of claim 4, wherein: in the middle plastic body, first notches are formed in positions corresponding to two side walls of the U shape of the U-shaped plastic body.
9. The HVDC relay with auxiliary contact of claim 4, wherein: and in the two ends of the auxiliary movable spring leaf, a U-shaped bending part for increasing the elasticity of the two ends of the auxiliary movable spring leaf is further arranged at the joint close to the U-shaped bottom wall of the U-shaped plastic body, and the U-shaped opening of the U-shaped bending part faces downwards.
CN202111114966.4A 2021-09-23 2021-09-23 High-voltage direct-current relay with auxiliary contacts Pending CN114093695A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN202111114966.4A CN114093695A (en) 2021-09-23 2021-09-23 High-voltage direct-current relay with auxiliary contacts
US17/950,256 US12009172B2 (en) 2021-09-23 2022-09-22 High-voltage DC relay with auxiliary contact
EP22197257.3A EP4156222A1 (en) 2021-09-23 2022-09-22 High-voltage dc relay with auxiliary contact
JP2022151329A JP7546017B2 (en) 2021-09-23 2022-09-22 High Voltage DC Relay with Auxiliary Contacts
KR1020220120174A KR20230043059A (en) 2021-09-23 2022-09-22 High-voltage DC relay with auxiliary contact
US18/665,019 US20240297008A1 (en) 2021-09-23 2024-05-15 High-voltage dc relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111114966.4A CN114093695A (en) 2021-09-23 2021-09-23 High-voltage direct-current relay with auxiliary contacts

Publications (1)

Publication Number Publication Date
CN114093695A true CN114093695A (en) 2022-02-25

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Application Number Title Priority Date Filing Date
CN202111114966.4A Pending CN114093695A (en) 2021-09-23 2021-09-23 High-voltage direct-current relay with auxiliary contacts

Country Status (1)

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CN (1) CN114093695A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115642056A (en) * 2022-11-17 2023-01-24 东莞市中汇瑞德电子股份有限公司 High-voltage direct-current relay with auxiliary contacts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110164737A (en) * 2019-04-01 2019-08-23 厦门宏发电力电器有限公司 A kind of auxiliary contact structure and the high voltage direct current relay with auxiliary contact
CN112309776A (en) * 2020-11-10 2021-02-02 东莞市中汇瑞德电子股份有限公司 High-voltage direct-current relay with auxiliary contacts
CN216119975U (en) * 2021-09-23 2022-03-22 厦门宏发电力电器有限公司 High-voltage direct-current relay with auxiliary contacts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110164737A (en) * 2019-04-01 2019-08-23 厦门宏发电力电器有限公司 A kind of auxiliary contact structure and the high voltage direct current relay with auxiliary contact
CN112309776A (en) * 2020-11-10 2021-02-02 东莞市中汇瑞德电子股份有限公司 High-voltage direct-current relay with auxiliary contacts
CN216119975U (en) * 2021-09-23 2022-03-22 厦门宏发电力电器有限公司 High-voltage direct-current relay with auxiliary contacts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115642056A (en) * 2022-11-17 2023-01-24 东莞市中汇瑞德电子股份有限公司 High-voltage direct-current relay with auxiliary contacts

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