CN211294973U - Electromagnetic relay capable of being pasted with circuit board - Google Patents
Electromagnetic relay capable of being pasted with circuit board Download PDFInfo
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- CN211294973U CN211294973U CN201921874833.5U CN201921874833U CN211294973U CN 211294973 U CN211294973 U CN 211294973U CN 201921874833 U CN201921874833 U CN 201921874833U CN 211294973 U CN211294973 U CN 211294973U
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- 238000003466 welding Methods 0.000 claims abstract description 59
- 230000003068 static effect Effects 0.000 claims abstract description 27
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 claims 1
- 244000273256 Phragmites communis Species 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses an electromagnetic relay that can paste dress with circuit board, including base, housing, coil, movable contact spring and stationary contact spring, it still includes a plurality of electrically conductive leading-out pieces, every electrically conductive leading-out piece is equipped with joint portion and weld part, joint portion and weld part are connected through the kink, be equipped with the welding terminal surface on the weld part, a plurality of electrically conductive pins have been inlayed on the base, the one end of each electrically conductive pin is equipped with an electric connection portion, a plurality of electric connection portions are parallel to each other and are in base one end, the housing is being close to every the electric connection portion department is equipped with the through-hole of stepping down, the joint portion of every electrically conductive leading-out piece passes one the through-hole joint of stepping down is in order to realize the electricity and connect, the weld part of every electrically conductive leading-out piece is outside the housing, the welding terminal; the other end of each conductive pin is electrically connected with the static reed or the coil connecting end. The utility model discloses a use with the direct subsides of circuit board dress, and be convenient for realize automatic assembly.
Description
Technical Field
The utility model belongs to the technical field of the electromagnetic relay makes technical field and specifically relates to an electromagnetic relay that can paste dress with circuit board.
Background
An electromagnetic relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), and is generally applied to an automatic control circuit, and actually is an automatic switch for controlling a larger current and a higher voltage by using a smaller current and a lower voltage. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
A coil control power supply pin or other pins of the existing electromagnetic relay can only be spliced with a circuit board and then fixed by welding for use, and the circuit board usually needs a PCB (printed circuit board) which is difficult to mount by adopting an FPC (flexible printed circuit). And it is difficult to perform automatic assembly operations in such a manner that the assembly is performed by inserting and then welding.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an electromagnetic relay that can paste dress with the circuit board, it has realized that electromagnetic relay directly uses with the circuit board subsides dress, and is convenient for realize automatic assembly operation.
In order to achieve the above purpose, the technical scheme of the utility model is that: an electromagnetic relay capable of being pasted with a circuit board comprises a base, a housing, a coil, a movable spring leaf and a static spring leaf, wherein the coil is arranged on a coil framework, the coil framework is fixedly connected with the base, the housing is fixedly connected with the base, the coil framework and the movable spring leaf are positioned between the housing and the base, the static spring leaf is fixedly connected with the base, a static contact on the static spring leaf corresponds to a movable contact on the movable spring leaf, the electromagnetic relay further comprises a plurality of conductive leading-out pieces, each conductive leading-out piece is provided with a clamping part and a welding part, the clamping part and the welding part are connected through a bending part, a welding end face is arranged on the welding part, the conductive leading-out pieces are mutually electrically insulated, a plurality of conductive pins are embedded on the base, one end of each conductive pin is provided with an electric connection part, the plurality of electric connection parts are mutually parallel and positioned at one end of the base, the clamping part of each conductive leading-out piece penetrates through the abdicating through hole to be clamped with one electric connection part to realize electric connection, the welding part of each conductive leading-out piece is positioned outside the housing, and the welding end faces of the welding parts of all the conductive leading-out pieces are positioned on the same plane; when the electromagnetic relay is installed, the welding part is welded with the circuit board patch bonding pad by using the welding end face; the other end of each conductive pin is electrically connected with the static reed or the coil connecting end.
Preferably, each of the conductive leading-out pieces is L-shaped, and the clamping portion and the welding portion of each conductive leading-out piece are perpendicular to each other.
Preferably, each conductive leading-out piece is in a U shape, two clamping parts and a welding part are formed on each conductive leading-out piece, and the two clamping parts are perpendicular to the welding part; the housing is being close to every electricity connection portion department is equipped with two and steps down the through-hole, and two joint portions on every electrically conductive leading-out piece pass two respectively it is in one to step down the through-hole joint simultaneously on the electricity connection portion. Therefore, as long as one clamping part is arranged on the two clamping parts and can be reliably and electrically connected with the electric connection part, the normal work can be ensured, and the electric connection reliability is improved; in addition, the two clamping parts are clamped on one electric connection part simultaneously, so that the connection stability can be improved.
The improved structure is characterized in that each conductive leading-out piece is provided with a shoulder on the clamping portion, and the shoulder is matched with the inner side surface of the housing to prevent the clamping portion of the conductive leading-out piece from being separated from the electric connection portion on the conductive pin. So as to form a withdrawal prevention structure to prevent the conductive leading-out member from falling off.
The improvement is further that a clamping groove is arranged on the clamping portion of each conductive leading-out piece, and the clamping portion is clamped on the electric connection portion through the clamping groove and forms interference fit. To further improve the reliability of the electrical connection.
The improved structure is characterized in that convex parts are arranged on the base between the adjacent electric connection parts, a matching groove is formed in the inner side surface of the housing corresponding to each convex part, and each convex part is matched with the matching groove to increase the creepage distance and the electric clearance between the adjacent conductive leading-out parts. Reliable electrical insulation between the high-voltage loop and the low-voltage loop is ensured, and the use safety is further improved.
The welding parts of all the conductive leading-out pieces are attached to the same outer side face of the housing, so that the welding end faces of the welding parts of all the conductive leading-out pieces are located on the same plane. So as to facilitate the assembly and the positioning and ensure that all the welding end faces are positioned on the same plane.
The improved structure is characterized in that one side of the housing, which is far away from the abdicating through hole, is provided with an installation part which extends outwards, the installation part is parallel to the welding end surface, the installation part is provided with an installation through hole, the inner wall of the installation through hole is embedded with a metal ring, and the metal ring and the housing are connected into a whole; the outer side face of the housing, which is provided with the yielding through hole, is provided with two positioning columns, the two positioning columns are parallel to the axial direction of the mounting through hole, and the electromagnetic relay is positioned by utilizing the two positioning columns and the circuit board. Therefore, the electromagnetic relay is convenient to install and fix, and the electromagnetic relay and the circuit board are convenient to position.
Preferably, the number of the static reeds is two, the number of the conductive pins is four, two of the conductive pins are respectively and electrically connected with the two static reeds, and the other two conductive pins are respectively and electrically connected with two ends of the coil;
the conductive pin electrically connected with the static reed is a first conductive pin, two first embedding grooves are formed in the outer side surface of the base, and each first conductive pin is embedded in one first embedding groove; the first conductive pin is provided with a first conductive clamping part which is vertical to the electric connection part, the static reed is provided with a clamping through hole, and the first conductive clamping part is in contact fit with the clamping through hole;
the conductive pin electrically connected with one end of the coil is a second conductive pin, two second embedding grooves are formed in the inner side face of the base, each second conductive pin is embedded in one second embedding groove, a second conductive clamping portion is arranged on each second conductive pin and perpendicular to the electric connection portion, and the second conductive clamping portions are clamped with the coil pins.
Furthermore, a first matching convex part is arranged on the inner side surface of the first embedding groove and abuts against the first conductive pin so as to prevent the first conductive pin from loosening; and a second matching convex part is arranged on the inner side surface of the second embedding groove and props against the second conductive pin so as to prevent the second conductive pin from loosening.
The utility model has the advantages as follows:
1. through addding electrically conductive leading-out spare, every electrically conductive leading-out spare is equipped with joint portion and weld part, and joint portion and weld part are connected through the kink, are equipped with the welding terminal surface on the weld part, has inlayed a plurality of conductive pin on the base, and the one end of every conductive pin is equipped with an electric connection portion, and a plurality of electric connection portions are parallel to each other and are in base one end, and the housing is being close to every electric connection portion department is equipped with the through-hole of stepping down, and the joint portion of every electrically conductive leading-out spare passes step down one through-hole joint the electric connection portion is in order to realize that the electricity is connected, and the weld part of every electrically conductive leading-out spare is outside the housing. Therefore, when the electromagnetic relay is installed, the welding end face of the welding part can be directly welded with the circuit board paster welding plate for use; the electromagnetic relay is directly used with a circuit board in a surface mounting mode, and automatic assembly is convenient to achieve.
2. Because the conductive leading-out part and the conductive pin are installed in a clamping mode, automatic assembly is convenient to achieve, and manufacturing cost is reduced.
3. The electromagnetic relay can be used for being pasted with a PCB provided with a paster bonding pad and is also suitable for being pasted with a FPC, and the application range of the electromagnetic relay is greatly expanded.
Drawings
FIG. 1 is a top perspective view of the present invention;
fig. 2 is a bottom perspective view of the present invention;
FIG. 3 is a view from the direction A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is an enlarged view at C of FIG. 4;
fig. 6 is a bottom view of the present invention;
FIG. 7 is a cross-sectional view D-D of FIG. 6;
fig. 8 is a perspective view of a conductive lead;
fig. 9 is a perspective view of the conductive lead-out member engaged with the first conductive pin;
fig. 10 is a perspective view of the conductive lead-out member engaged with the second conductive pin;
FIG. 11 is a top perspective view of the base;
figure 12 is a bottom perspective view of the base.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 12, an electromagnetic relay capable of being mounted on a circuit board includes a base 1, a housing 2, a coil 3, a movable spring 4 and two stationary springs 5, the housing 2 is fixedly connected to the base 1, the coil 3 is wound on a coil frame 31, the coil frame 31 is fixedly connected to the base 1, the coil frame 31 is located between the base 1 and the housing 2, an iron core 32 is installed in a central hole of the coil frame 31, a yoke 33 is fixedly connected to the coil frame 31, the yoke 33 is L-shaped, one end of the yoke 33 is fixedly connected to one side of the coil frame 31, the other end of the yoke 33 is axially parallel to the coil 3, the movable spring 4 is bent along a middle portion, one end of the movable spring 4 is fixedly connected to the other end of the yoke 33, the other end of the movable spring 4 is fixedly connected to an armature 41, and the other end of the movable spring 4.
Each static spring 5 comprises a plate-shaped base 51, a part of one side of the plate-shaped base 51 extends outwards and is bent to form a static contact fixing part 52, the static contact fixing part 52 is perpendicular to the plate-shaped base 51 and is fixedly provided with a static contact 521, the two static springs 5 are in a symmetrical structure and are fixedly connected on the outer side surface of the base 1 at intervals by utilizing the plate-shaped base 51 respectively, each static contact fixing part 52 extends into a space between the base 1 and the housing 2, and each static contact 521 corresponds to one movable contact 42 on the movable spring 4. The plate-like base 51 is partially located outside the housing 2 and forms a connection portion to be connected to the load connection terminal, and the connection portion is provided with a mounting opening 511.
As further shown in fig. 8, the present embodiment further includes four conductive leading-out pieces 6, each conductive leading-out piece 6 is electrically insulated from each other, the conductive leading-out piece 6 is U-shaped, two clamping portions 61 and a welding portion 62 are disposed on the conductive leading-out piece 6, the two clamping portions 61 are perpendicular to the welding portion 62, the two clamping portions 61 and the welding portion 62 are connected by a bending portion 63, a welding end face is disposed on the welding portion 62, and the welding end face is an outer side face of the welding portion 62.
Four conductive pins 7 are embedded on the base 1, the conductive pins 7 are electrically insulated from each other, one end of each conductive pin 7 is provided with an electric connection part 70, the four electric connection parts 70 are parallel to each other and are positioned at one end of the base 1, the housing 2 is provided with two abdicating through holes 21 at the position close to each electric connection part 70, two clamping parts 61 on each conductive leading-out piece 6 respectively penetrate through the two abdicating through holes 21 and are clamped on one electric connection part 70 to realize electric connection, the welding part 62 of each conductive leading-out piece 6 is positioned outside the housing 2, and the welding end faces of the welding parts 62 of all conductive leading-out pieces 6 are positioned on the same plane; when the electromagnetic relay is installed, the welding part 62 is welded with a circuit board patch bonding pad by using a welding end face; the other end of each conductive pin 7 is electrically connected with the static reed 5 or the connecting end of the coil 3.
A clamping groove 611 is arranged on the clamping portion 61 of each conductive leading-out member 6, and the clamping portion 61 is clamped on the electric connecting portion 70 by the clamping groove 611 and forms interference fit. To ensure the reliability of the electrical connection.
Two shoulders 612 are arranged on the clamping part 61 on each conductive leading-out piece 6, and the shoulders 612 are matched with the inner side surface of the housing 2 to prevent the clamping part 61 of the conductive leading-out piece 6 from being separated from the electric connection part 70 on the conductive pin 7.
The base 1 between the adjacent electric connection parts 70 is provided with a convex part 1a, the inner side surface of the housing 2 is provided with a matching groove 2a corresponding to each convex part 1a, and each convex part 1a is matched with the matching groove 2a to increase the creepage distance and the electric clearance between the adjacent conductive leading-out parts 6. Reliable electrical insulation between the high-voltage loop and the low-voltage loop is ensured, and the use safety is further improved.
Two mounting parts 22 extending outwards are arranged on one side of the housing 2 away from the abdicating through hole 21, the mounting parts 22 are parallel to the welding end face, mounting through holes 221 are arranged on the mounting parts 22, metal rings 222 are embedded on the inner walls of the mounting through holes 221, and the metal rings 222 and the housing 2 are connected into a whole through injection molding; the housing 2 is provided with two positioning columns 23 on the outer side surface provided with the abdicating through hole 21, the two positioning columns 23 are parallel to the axial direction of the installation through hole 221, and the electromagnetic relay utilizes the two positioning columns 23 to position with the circuit board. Two positioning through holes can be arranged on the circuit board, and the two positioning columns 23 are matched with the two positioning through holes on the circuit board. And the positioning between the welding device and the circuit board is convenient, and the accuracy of the welding position is ensured.
The inner side surfaces of the welding portions 62 of all the conductive leads 6 are attached to the same outer side surface of the housing 2, so that the welding end surfaces of the welding portions 62 of all the conductive leads 6 are on the same plane.
The number of the static reeds 5 is two, the number of the conductive pins 7 is four, two conductive pins 7 are respectively and electrically connected with the two static reeds 5, and the other two conductive pins 7 are respectively and electrically connected with two ends of the coil 3;
the conductive pin 7 electrically connected with the static reed 5 is a first conductive pin 71, two first embedding grooves 1b are arranged on the outer side surface of the base 1, and each first conductive pin 71 is embedded in one first embedding groove 1 b; the first conductive pin 71 is provided with a first conductive clamping part 711, the first conductive clamping part 711 is perpendicular to the electric connection part 70, the plate-shaped base 51 of the static spring 5 is provided with a clamping through hole 53, and the first conductive clamping part 711 is in contact fit with the clamping through hole 53 to realize electric connection;
the conductive pin 7 electrically connected to one end of the coil 3 is a second conductive pin 72, two second fitting grooves 1c are formed in the inner side surface of the base 1, each second conductive pin 72 is fitted in one second fitting groove 1c, a second conductive clamping portion 721 is formed on the second conductive pin 72, the second conductive clamping portion 721 is perpendicular to the electrical connection portion 70, and the second conductive clamping portion 721 is electrically connected to the pin of the coil 3 in a clamping manner.
As further shown in fig. 5, the electrical connections 70 on the two first conductive pins 71 are in a middle position and the electrical connections 70 on the two second conductive pins 72 are on both sides.
A plurality of first matching convex parts 11b are arranged on the inner side surface of the first matching groove 1b, and the first matching convex parts 11b are pressed against the first conductive pins 71 to prevent the first conductive pins 71 from loosening; the inner side surface of the second fitting groove 1c is provided with a second fitting protrusion 11c, and the second fitting protrusion 11c abuts against the second conductive pin 72 to prevent the second conductive pin 72 from loosening.
When this embodiment uses, earlier utilize two installation departments 22 of housing 2 to fix whole relay, then utilize two reference columns 23 and circuit board to fix a position, four welding terminal surface and the laminating of circuit board correspondence paster pad on the welding part 62, then the welding just so can give coil 3 input control power through the circuit board, then the operating condition of two stationary reed 3 is gathered to the circuit board again.
The above is only a preferred embodiment of the present invention, and all changes that can be made by those skilled in the art according to the appended claims will fall within the scope of the present invention.
Claims (10)
1. The utility model provides an electromagnetic relay that can paste dress with circuit board, includes base, housing, coil, movable contact spring and stationary contact spring, the coil dress is on coil skeleton, and coil skeleton links firmly with the base, and the housing links firmly the base, and coil skeleton and movable contact spring are in between housing and the base, and stationary contact spring links firmly with the base, and stationary contact on the stationary contact spring is corresponding with the movable contact spring on the movable contact spring, its characterized in that: the electric conduction leading-out device comprises a base, a plurality of electric conduction leading-out pieces and a plurality of electric conduction leading-out pieces, and is characterized by further comprising a plurality of electric conduction leading-out pieces, each electric conduction leading-out piece is provided with a clamping part and a welding part, the clamping part is connected with the welding part through a bending part, a welding end face is arranged on the welding part, the electric conduction leading-out pieces are mutually electrically insulated, a plurality of electric conduction pins are embedded on the base, one end of each electric conduction pin is provided with an electric connection part, the electric connection parts are mutually parallel and are positioned at one end of the base, the electric conduction pins are mutually electrically insulated, a yielding through hole is arranged at a position close to each electric connection part of the housing, the clamping part of each electric conduction leading-out piece penetrates through the yielding through hole to be; when the electromagnetic relay is installed, the welding part is welded with the circuit board patch bonding pad by using the welding end face; the other end of each conductive pin is electrically connected with the static reed or the coil connecting end.
2. An electromagnetic relay according to claim 1, wherein: each conductive leading-out piece is L-shaped, and the clamping part and the welding part on each conductive leading-out piece are mutually vertical.
3. An electromagnetic relay according to claim 1, wherein: each conductive leading-out piece is U-shaped, two clamping parts and a welding part are formed on each conductive leading-out piece, and the two clamping parts are perpendicular to the welding part; the housing is being close to every electricity connection portion department is equipped with two and steps down the through-hole, and two joint portions on every electrically conductive leading-out piece pass two respectively it is in one to step down the through-hole joint simultaneously on the electricity connection portion.
4. An electromagnetic relay according to claim 1, wherein: the shoulder is arranged on the clamping portion on each conductive leading-out piece, and the shoulder is matched with the inner side face of the housing to prevent the clamping portion of the conductive leading-out piece from being separated from the electric connection portion on the conductive pin.
5. An electromagnetic relay according to claim 1, wherein: the clamping portion is provided with a clamping groove, and the clamping portion is clamped on the electric connection portion through the clamping groove to form interference fit.
6. An electromagnetic relay according to claim 1, wherein: the base between the adjacent electric connection parts is provided with a convex part, the inner side surface of the housing corresponds to each convex part which is provided with a matching groove, and each convex part is matched with the matching groove to increase the creepage distance and the electric clearance between the adjacent conductive leading-out parts.
7. An electromagnetic relay according to claim 1, wherein: the welding parts of all the conductive leading-out pieces are attached to the same outer side face of the housing, so that the welding end faces of the welding parts of all the conductive leading-out pieces are positioned on the same plane.
8. An electromagnetic relay according to claim 1, wherein: an installation part extending outwards is arranged on one side of the housing away from the abdicating through hole, the installation part is parallel to the welding end face, an installation through hole is arranged on the installation part, a metal ring is embedded on the inner wall of the installation through hole, and the metal ring and the housing are connected into a whole; the outer side face of the housing, which is provided with the yielding through hole, is provided with two positioning columns, the two positioning columns are parallel to the axial direction of the mounting through hole, and the electromagnetic relay is positioned by utilizing the two positioning columns and the circuit board.
9. An electromagnetic relay according to any one of claims 1 to 8, wherein: the number of the static reed is two, the number of the conductive pins is four, two of the conductive pins are respectively and electrically connected with the two static reeds, and the other two conductive pins are respectively and electrically connected with the two ends of the coil;
the conductive pin electrically connected with the static reed is a first conductive pin, two first embedding grooves are formed in the outer side surface of the base, and each first conductive pin is embedded in one first embedding groove; the first conductive pin is provided with a first conductive clamping part which is vertical to the electric connection part, the static reed is provided with a clamping through hole, and the first conductive clamping part is in contact fit with the clamping through hole;
the conductive pin electrically connected with one end of the coil is a second conductive pin, two second embedding grooves are formed in the inner side face of the base, each second conductive pin is embedded in one second embedding groove, a second conductive clamping portion is arranged on each second conductive pin and perpendicular to the electric connection portion, and the second conductive clamping portions are clamped with the coil pins.
10. An electromagnetic relay according to claim 9, wherein: the inner side surface of the first embedding groove is provided with a first matching convex part which is pressed against the first conductive pin to prevent the first conductive pin from loosening; and a second matching convex part is arranged on the inner side surface of the second embedding groove and props against the second conductive pin so as to prevent the second conductive pin from loosening.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921874833.5U CN211294973U (en) | 2019-11-01 | 2019-11-01 | Electromagnetic relay capable of being pasted with circuit board |
| US17/770,023 US12020879B2 (en) | 2019-11-01 | 2020-10-30 | Electromagnetic relay |
| DE112020005406.3T DE112020005406T5 (en) | 2019-11-01 | 2020-10-30 | ELECTROMAGNETIC RELAY |
| PCT/CN2020/125283 WO2021083331A1 (en) | 2019-11-01 | 2020-10-30 | Electromagnetic relay |
| US18/666,124 US20240304404A1 (en) | 2019-11-01 | 2024-05-16 | Electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921874833.5U CN211294973U (en) | 2019-11-01 | 2019-11-01 | Electromagnetic relay capable of being pasted with circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211294973U true CN211294973U (en) | 2020-08-18 |
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ID=72033603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921874833.5U Active CN211294973U (en) | 2019-11-01 | 2019-11-01 | Electromagnetic relay capable of being pasted with circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211294973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021083331A1 (en) * | 2019-11-01 | 2021-05-06 | 厦门宏发汽车电子有限公司 | Electromagnetic relay |
| CN118299223A (en) * | 2024-04-23 | 2024-07-05 | 武汉嘉晨电子技术股份有限公司 | Relay installed by wireless beam |
-
2019
- 2019-11-01 CN CN201921874833.5U patent/CN211294973U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021083331A1 (en) * | 2019-11-01 | 2021-05-06 | 厦门宏发汽车电子有限公司 | Electromagnetic relay |
| US12020879B2 (en) | 2019-11-01 | 2024-06-25 | Xiamen Hongfa Automotive Electronics Co., Ltd. | Electromagnetic relay |
| CN118299223A (en) * | 2024-04-23 | 2024-07-05 | 武汉嘉晨电子技术股份有限公司 | Relay installed by wireless beam |
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