CN113555255A - Canned type relay - Google Patents
Canned type relay Download PDFInfo
- Publication number
- CN113555255A CN113555255A CN202110291587.6A CN202110291587A CN113555255A CN 113555255 A CN113555255 A CN 113555255A CN 202110291587 A CN202110291587 A CN 202110291587A CN 113555255 A CN113555255 A CN 113555255A
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- cover plate
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- 238000007789 sealing Methods 0.000 claims abstract description 64
- 239000000565 sealant Substances 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims description 36
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000004382 potting Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000002791 soaking Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 18
- 238000001816 cooling Methods 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 241000463219 Epitheca Species 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
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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
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a sealed relay, which comprises an electromagnetic relay with a plurality of first leading-out pins, a hollow sealed body and a plurality of second leading-out pins, wherein one ends of the second leading-out pins are respectively and electrically connected with the first leading-out pins of the electromagnetic relay one by one; the electromagnetic relay and each first leading-out pin thereof are positioned in the sealing body, the sealing body is filled with pouring sealant, and the pouring sealant forms a sealing layer at least wrapping each first leading-out pin of the electromagnetic relay; the other end of each second leading-out pin is respectively positioned outside the sealed body. The invention adopts multiple sealing structures, so that the sealing structure has high sealing performance and can be used for soaking in a liquid environment for a long time.
Description
Technical Field
The invention relates to a relay, in particular to a sealed relay.
Background
With the rapid development of the internet, the requirements on the server are higher and higher, the power of the server is larger, and the heat dissipation of the server becomes a development bottleneck. At present, an air-cooled cooling method is generally adopted for a server heat dissipation mode in a machine room. However, in large data centers, air cooling alone is not sufficient to meet the heat dissipation requirements of high heat flux servers. Liquid cooling, utilize working fluid to be the medium of middle heat transmission promptly, transmit the heat to far away by the hot area and cool off again, because the specific heat of liquid is greater than the air far away, the radiating rate is also far away from the air, therefore refrigeration efficiency is far above the air-cooled radiating mode, and liquid cooling also can obtain fine control in the aspect of the noise simultaneously. Therefore, liquid cooling also becomes a necessary trend for server heat dissipation.
Liquid cooling is to soak the server in liquid, requiring that each device in the server can withstand the test of liquid soaking. The relay, as an electronic component in the server, also needs to be immersed in the liquid. The electromagnetic relay is a mechanical structure moving device, once liquid enters the relay, the action and release time of the relay can be influenced, so that the overall response speed and function of the server are influenced, and the relay is required to be made into a sealed type and cannot be damaged after being soaked for a long time.
The vast majority of traditional electromagnetic relay adopts single-layer shell structure, and this kind of relay has a drawback, and in welding process such as wave-soldering, reflow soldering promptly, the sealed glue of relay pin-out and relay casing junction is heated easily and is melted and lead to probably appearing the tiny gap to lead to the relay not tight, get into liquid easily in the liquid cooling environment.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the sealed relay which can realize multiple sealing, effectively avoids the influence of welding heat on the plastic packaging performance of the relay and ensures that the sealing performance of the relay is more reliable.
The technical scheme adopted by the invention for solving the technical problems is as follows: a sealed relay comprises an electromagnetic relay with a plurality of first leading-out pins, a hollow sealed body and a plurality of second leading-out pins, wherein one ends of the second leading-out pins are respectively and electrically connected with the first leading-out pins of the electromagnetic relay one by one; the electromagnetic relay and each first leading-out pin thereof are positioned in the sealing body, the sealing body is filled with pouring sealant, and the pouring sealant forms a sealing layer at least wrapping each first leading-out pin of the electromagnetic relay; the other end of each second leading-out pin is respectively positioned outside the sealed body.
Furthermore, the electromagnetic relay is provided with a relay shell, the first leading-out pins are located at the first end of the relay shell, the other ends of the second leading-out pins are located on one side where the second end of the relay shell is located, and the first end of the relay shell is opposite to the second end.
Furthermore, the extending direction of the first leading-out pin is opposite to the extending direction of the other end of the second leading-out pin; and/or the sealing layer wraps the electromagnetic relay and each first leading-out pin of the electromagnetic relay.
Furthermore, the sealing body comprises a shell with an opening at one end and a cover plate, the electromagnetic relay is placed into the shell from the opening of the shell, and potting adhesive and the cover plate are filled into the shell.
Furthermore, a plurality of first leading-out pins of the electromagnetic relay face the cover plate in a back-to-back manner, and each second leading-out pin respectively penetrates through the cover plate, so that the other end of each second leading-out pin is positioned outside the cover plate.
Further, gaps between the second leading-out pins and the cover plate are sealed through dispensing respectively; and plastic package is dispensed between the cover plate and the shell.
Furthermore, the cover plate is arranged in the opening of the shell, and glue dispensing grooves capable of enabling glue to flow into a gap between the cover plate and the shell are formed in the edges of the periphery of the outer end face of the cover plate.
Furthermore, the cover plate is provided with a plurality of through holes, the second leading-out pins respectively penetrate through the through holes one by one, and the through holes are distributed in the glue dispensing groove.
Further, the cover plate is provided with a first air hole; the first air hole is sealed after the pouring sealant in the sealing body is solidified.
Furthermore, the relay shell is provided with a second air hole, the second air hole and the first leading-out pins are located at the same end of the relay shell and are located in the sealing layer, and the second air hole is sealed before the electromagnetic relay enters the sealing body.
Compared with the prior art, the invention has the following beneficial effects:
1. the sealing body and the pouring sealant in the sealing body are adopted to protect the electromagnetic relay, so that liquid cannot permeate the electromagnetic relay through the sealing body and the pouring sealant, and multiple sealing functions are realized. Particularly, the second leading-out pin is arranged, so that the first leading-out pin of the electromagnetic relay is wrapped in the sealing body and the pouring sealant, heat cannot be transferred to the first leading-out pin of the electromagnetic relay when the client is welded, and therefore a small gap is prevented from being generated due to the fact that the sealant for combining the first leading-out pin and the relay shell is heated and melted, and the sealing performance of the electromagnetic relay is very reliable.
2. The first leading-out pins are located at the first end of the relay shell, the other ends of the second leading-out pins are located at one side of the second end of the relay shell, the first end of the relay shell is opposite to the second end, the length of the second leading-out pins is long enough, and the wrapping amount of the pouring sealant on the first leading-out pins is enough, so that the first leading-out pins of the electromagnetic relay are ensured not to be affected by welding heat on the plastic encapsulation performance of the electromagnetic relay completely.
3. The sealing body comprises the shell and the cover plate, so that the structure is simple, and the placing and glue pouring operation of the electromagnetic relay is more convenient.
4. Gaps between the second leading-out pins and the cover plate are sealed through glue dispensing respectively, and plastic packaging is performed through glue dispensing between the cover plate and the shell, so that the sealing body can provide a closed space for the electromagnetic relay and the pouring sealant, and the sealing performance of the electromagnetic relay is further improved.
5. The glue dispensing groove is arranged, so that glue can be effectively drained by the glue dispensing groove, the glue dispensing operation between the cover plate and the shell is more convenient, and the glue using amount can be saved. Particularly, the plurality of through holes for the second leading-out pins to pass through on the cover plate are distributed in the glue dispensing groove, so that when glue is poured into the glue dispensing groove, the gap between the second leading-out pins and the cover plate can be further sealed, and the glue dispensing process is further simplified.
6. The cover plate is provided with the first air holes, so that the first air holes can be used for ventilation when the pouring sealant is used for plastic package, the pouring sealant is easy to cure quickly, and the curing period is favorably shortened. Particularly, the first air hole of the cover plate is sealed after the pouring sealant in the sealing body is solidified, so that the sealing body can provide a closed space for the electromagnetic relay and the pouring sealant, and the sealing performance of the electromagnetic relay is further improved.
7. The second bleeder vent of relay casing with a plurality of first pins of drawing are located the same one end of relay casing, ensure that the position of second bleeder vent is in the sealing layer, avoid the second bleeder vent to seal the quality not good and lead to liquid to get into inside the electromagnetic relay along the second bleeder vent.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the sealed relay according to the present invention is not limited to the embodiment.
Drawings
Fig. 1 is a schematic perspective view illustrating a first electromagnetic relay according to a first embodiment of the present invention, in a state where the first electromagnetic relay and a second lead-out pin are engaged with each other;
fig. 2 is a schematic perspective view illustrating a second embodiment of an electromagnetic relay according to the present invention in a state of being engaged with a second lead pin;
FIG. 3 is a first perspective view of the present invention;
FIG. 4 is a schematic perspective view of the first embodiment of the present invention;
FIG. 5 is a cross-sectional view of the invention according to one embodiment;
FIG. 6 is a cross-sectional view of the present invention according to the second embodiment.
Detailed Description
Example one
Referring to fig. 1 to 5, the sealed relay of the present invention includes an electromagnetic relay 1 having a plurality of first pins 11 and a relay housing 12, and further includes a hollow sealed body and a plurality of second pins 2, wherein one end of each of the second pins 2 is electrically connected to one of the first pins 11 of the electromagnetic relay 1; the electromagnetic relay 1 and each first leading-out pin 11 thereof are positioned in a sealing body, the sealing body is filled with pouring sealant, and the pouring sealant forms a sealing layer 5 at least wrapping each first leading-out pin 11 of the electromagnetic relay (namely, the part of each first leading-out pin 11 outside the relay shell 12 is positioned in the sealing layer 5); the other end of each second leading-out pin 2 is respectively positioned outside the sealed body.
In this embodiment, the plurality of first leading-out pins 11 are located at a first end of the relay housing 12, and the other ends of the plurality of second leading-out pins 2 are located at a side where a second end of the electromagnetic relay housing 12 is located; the first end of the relay housing 12 is opposite the second end. Therefore, the length of the second lead-out pin 2 is long enough, and the wrapping amount of the pouring sealant to the first lead-out pin 11 is enough, so that the first lead-out pin 11 of the electromagnetic relay 1 is ensured not to be affected by welding heat to the plastic encapsulation property of the first lead-out pin. The second pin 2 is specifically L-shaped, one side of the second pin is located on the same side as the first pins 11 and is electrically connected with the corresponding first pin 11 (the electrical connection can be realized by welding, riveting or the like), the other side of the second pin is matched with the outer side of the relay housing 12, and the free end of the other side forms the other end of the second pin 2 and extends in the direction away from the first pin 11. The relay case 12 generally includes an upper case and a base, which are hermetically connected to each other, and in which the magnetic circuit portion and the contact portion of the electromagnetic relay are accommodated, and only the first lead-out pins 11 are partially led out from the base. The extending direction of the first leading pin 11 is opposite to the extending direction of the other end of the second leading pin 2. The sealing layer 5 wraps the electromagnetic relay 1 and the first lead-out pins 11 thereof.
In this embodiment, the sealing body includes a housing 3 and a cover plate 4, the housing 3 has an opening at one end, the electromagnetic relay 1 is placed into the electromagnetic relay 1 from the opening of the housing 3, and the cover plate 4 is sealed and covered by glue. The first leading-out pins 11 of the electromagnetic relay 1 face away from the cover plate 4 (that is, the portions of the first leading-out pins 11 outside the relay housing 12 are on the opposite side of the relay housing 12 and the cover plate 4), and the second leading-out pins 2 respectively penetrate through the cover plate 4, so that the other ends of the second leading-out pins are located outside the cover plate 4. Specifically, the electromagnetic relay 1 is flip-chip mounted in the housing 3 (i.e., the first lead pins 11 face upward), and the second lead pins 2 face downward at the other ends thereof, as shown in fig. 4 and 5. In other embodiments, the second leading-out pins respectively penetrate through one end of the shell opposite to the cover plate, and the other end of the second leading-out pins is positioned outside the shell. In other embodiments, the sealing body comprises two half shells which are in sealing butt joint and enclose the electromagnetic relay and the first leading-out pins thereof, and the second leading-out pins respectively penetrate through one of the half shells.
In this embodiment, the gaps between the second lead-out pins 2 and the cover plate 4 are sealed by dispensing. And plastic package is dispensed between the cover plate 4 and the shell 3. Specifically, the cover plate 4 is disposed in the opening of the housing 3, and the peripheral edge of the outer end surface of the cover plate 4 is provided with a glue dispensing groove 41 capable of allowing glue to flow into the gap between the cover plate 4 and the housing 3, as shown in fig. 3. The cover plate 4 is provided with a plurality of through holes 42, the second lead-out pins 2 respectively penetrate through the through holes 42 one by one, and the through holes 42 are distributed in the glue dispensing groove 41. Therefore, the glue dispensing groove 41 can be used for effectively guiding the glue, so that the glue dispensing operation between the cover plate 4 and the shell 3 is more convenient, and the glue consumption can be saved. In addition, when the glue is poured into the glue dispensing groove 41, the gap between the second lead-out pin 2 and the cover plate 4 can be sealed, so that the glue dispensing process is further simplified.
In this embodiment, the cover plate 4 is provided with a first vent hole 43, and the first vent hole 43 is sealed after the potting adhesive in the sealing body is cured. Specifically, the first vent hole 43 of the cover plate 4 may be sealed by hot riveting and/or dispensing. The arrangement of the first air holes 43 enables the invention to utilize the first air holes 43 to ventilate when the pouring sealant is used for plastic package, so that the pouring sealant is easier to be quickly cured, and the curing period of the pouring sealant is favorably shortened. In particular, the first vent hole 43 of the cover plate 4 is sealed after the potting adhesive in the sealing body is cured, so that the sealing body can provide a sealed space for the potting adhesive of the electromagnetic relay 1 and the sealing layer 5, thereby further improving the sealing performance of the electromagnetic relay 1.
In this embodiment, the housing 3 is provided with a rib and/or a slot (not shown in the figure) inside, so as to limit and clamp the electromagnetic relay 1 located in the housing 3.
During assembly, the electromagnetic relay 1 is firstly installed in the shell 3 and then is subjected to glue pouring and sealing, or the electromagnetic relay 1 is firstly poured into the shell 3 and then is installed in the shell 3, the electromagnetic relay 1 and each first leading-out pin 11 (or at least each first leading-out pin 11 of the electromagnetic relay) of the electromagnetic relay 1 are ensured to be wrapped by the sealing layer 5 formed by the pouring and sealing glue in the shell 3, then the cover plate 4 is covered, the other end of each second leading-out pin 2 respectively penetrates through the cover plate 4, glue dispensing and plastic packaging are carried out between the shell 3 and the cover plate 4 and between the cover plate 4 and each second leading-out pin 2, a plastic packaging layer 6 is formed, and the plastic packaging layer 6 and the sealing layer 5 are subjected to curing treatment simultaneously. Finally, the first air holes 43 formed in the cover plate 4 are sealed in a manner of hot riveting and/or dispensing.
The invention relates to a sealed relay, which is based on the traditional electromagnetic relay, adopts a double-layer shell (the inner layer shell is a relay shell 12) and pouring sealant to realize multiple sealing, and liquid cannot permeate into the internal electromagnetic relay 1 through the shell 3, a cover plate 4 and the like. Compared with a sealed relay (metal shell), the cost is low and the process is simple in civil occasions. Particularly, each first leading-out pin 11 of the electromagnetic relay 1 is wrapped in the shell 3, plastic packaging is carried out through a glue pouring mode, the second leading-out pins 2 are used for leading out, the length of the second leading-out pins 2 is enough, the wrapping amount of the pouring glue to the first leading-out pins 11 is enough, heat cannot be transmitted to the electromagnetic relay 1 in the shell 3 when a client side is welded, and the situation that a small gap is formed due to the fact that the sealant at the joint of the first leading-out pins 11 and the relay shell 12 is melted due to heating cannot be caused.
The sealed relay adopts the multiple sealing structure, has high sealing performance and can be soaked in a liquid environment for a long time for use.
Example two
The present invention is a sealable relay that differs from the first embodiment in that: the relay housing 12 is provided with a second vent hole (not shown in the figure), which is located at the same end of the relay housing 12 as the first lead-out pins 11 (the second vent hole may be located at a position close to the base of the relay housing 12 or the upper shell), and is located in the sealing layer 5, and the second vent hole is sealed before the electromagnetic relay enters the sealing body. So, ensure that the position of second bleeder vent is in all the time in sealing layer 5, when avoiding sealing layer 5 only to form local parcel (as shown in fig. 6) to electromagnetic relay, cause the second bleeder vent not to receive the protection of sealing layer 5 (traditional electromagnetic relay's second bleeder vent is generally established at the second end of relay casing, epitheca top end promptly) to lead to appearing liquid along the inside risk of second bleeder vent entering electromagnetic relay when second bleeder vent itself scalds to seal or glue sealing quality is not good.
The above embodiments are only used to further illustrate the sealed relay of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A sealed relay comprising an electromagnetic relay having a plurality of first lead-out pins, characterized in that: the electromagnetic relay also comprises a hollow sealing body and a plurality of second leading-out pins, wherein one ends of the second leading-out pins are respectively and electrically connected with the first leading-out pins of the electromagnetic relay one by one; the electromagnetic relay and each first leading-out pin thereof are positioned in the sealing body, the sealing body is filled with pouring sealant, and the pouring sealant forms a sealing layer at least wrapping each first leading-out pin of the electromagnetic relay; the other end of each second leading-out pin is respectively positioned outside the sealed body.
2. The sealed relay according to claim 1, wherein: the electromagnetic relay is provided with a relay shell, the first leading-out pins are located at the first end of the relay shell, the other ends of the second leading-out pins are located on one side where the second end of the relay shell is located, and the first end of the relay shell is opposite to the second end.
3. The sealed relay according to claim 2, wherein: the extending direction of the first leading-out pin is opposite to the extending direction of the other end of the second leading-out pin; and/or the sealing layer wraps the electromagnetic relay and each first leading-out pin of the electromagnetic relay.
4. The sealed-type relay according to claim 1, 2 or 3, characterized in that: the sealing body comprises a shell with an opening at one end and a cover plate, the electromagnetic relay is placed into the shell from the opening of the shell, and potting adhesive is poured into the shell and covers the cover plate.
5. The sealed relay according to claim 4, wherein: the first leading-out pins of the electromagnetic relay face the cover plate in a back-to-back mode, and the second leading-out pins respectively penetrate through the cover plate, so that the other end of each second leading-out pin is located outside the cover plate.
6. The sealed relay according to claim 5, wherein: gaps between the second leading-out pins and the cover plate are sealed through dispensing respectively; and plastic package is dispensed between the cover plate and the shell.
7. The sealed relay according to claim 6, wherein: the cover plate is arranged in the opening of the shell, and glue dispensing grooves capable of enabling glue to flow into a gap between the cover plate and the shell are formed in the edges of the periphery of the outer end face of the cover plate.
8. The sealed relay according to claim 7, wherein: the cover plate is provided with a plurality of through holes, the second leading-out pins respectively penetrate through the through holes one by one, and the through holes are distributed in the glue dispensing groove.
9. The sealed relay according to claim 4, wherein: the cover plate is provided with a first air hole; the first air hole is sealed after the pouring sealant in the sealing body is solidified.
10. The sealed relay according to claim 2 or 3, wherein: the relay shell is provided with a second air hole, the second air hole and the first leading-out pins are located at the same end of the relay shell and located in the sealing layer, and the second air hole is sealed before the electromagnetic relay enters the sealing body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291587.6A CN113555255B (en) | 2021-03-18 | 2021-03-18 | Sealed relay |
| EP22160353.3A EP4060703A1 (en) | 2021-03-18 | 2022-03-04 | Sealed relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291587.6A CN113555255B (en) | 2021-03-18 | 2021-03-18 | Sealed relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113555255A true CN113555255A (en) | 2021-10-26 |
| CN113555255B CN113555255B (en) | 2024-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110291587.6A Active CN113555255B (en) | 2021-03-18 | 2021-03-18 | Sealed relay |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4060703A1 (en) |
| CN (1) | CN113555255B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4210083A3 (en) * | 2021-12-15 | 2023-09-13 | Xiamen Hongfa Electroacoustic Co., Ltd. | Relay with an injection molded body and packaging method of a relay |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458367B (en) * | 2022-11-09 | 2023-04-11 | 浙江英洛华新能源科技有限公司 | Contact portion sealing structure of relay |
| CN118280776A (en) * | 2024-03-29 | 2024-07-02 | 武汉嘉晨电子技术股份有限公司 | Relay with sampling terminal and assembly method |
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| US20090102586A1 (en) * | 2007-10-18 | 2009-04-23 | Tyco Electronics Corporation | Hermetically sealed relay |
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| CN203386664U (en) * | 2013-08-22 | 2014-01-08 | 北京飞秒科技发展有限公司 | Relay applied to intense pulsed light power supply, and electronic equipment |
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| CN206864400U (en) * | 2017-06-06 | 2018-01-09 | 厦门宏发电声股份有限公司 | A kind of waterproof ventilative electromagnetic relay |
| CN107946140A (en) * | 2017-12-05 | 2018-04-20 | 厦门宏发汽车电子有限公司 | A kind of breather hole structure of rain-proof type relay |
| CN208507586U (en) * | 2017-12-19 | 2019-02-15 | 四川泛华电器有限责任公司 | A kind of automobile low-noise relay |
| CN208970435U (en) * | 2018-10-08 | 2019-06-11 | 厦门宏发汽车电子有限公司 | A kind of solid-state relay of sealing structure |
| CN110112039A (en) * | 2019-05-24 | 2019-08-09 | 中汇瑞德电子（芜湖）有限公司 | A kind of sealed relay and its encapsulating method |
| CN210743875U (en) * | 2019-06-25 | 2020-06-12 | 宁波天波港联电子有限公司 | Relay with glue overflow prevention base |
| CN211125504U (en) * | 2019-09-24 | 2020-07-28 | 浙江正泰电器股份有限公司 | Contact system of direct current relay |
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| CN211350483U (en) * | 2019-12-28 | 2020-08-25 | 浙江美硕电气科技股份有限公司 | Airtight relay |
| CN212411943U (en) * | 2020-06-02 | 2021-01-26 | 昆山联滔电子有限公司 | DC relay |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4210083A3 (en) * | 2021-12-15 | 2023-09-13 | Xiamen Hongfa Electroacoustic Co., Ltd. | Relay with an injection molded body and packaging method of a relay |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4060703A1 (en) | 2022-09-21 |
| CN113555255B (en) | 2024-02-20 |
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