Electromagnetic relays

Abstract

We provide electromagnetic relays. [Solution] The electromagnetic relay according to the present invention comprises a housing, an electromagnet provided inside the housing, a movable armature provided inside the housing and located on one side of the electromagnet, a movable contact assembly member provided inside the housing and connected to the movable armature and having first and second contact plates, and a fixed contact assembly member, part of which is provided inside the housing and part of which is provided outside the housing, wherein the first contact plate has first and second movable contacts, the second contact plate has third and fourth movable contacts, and the portions of the first to fourth terminal plates located inside the housing have first to fourth fixed contacts, the first fixed contact inside the housing is installed corresponding to the first movable contact, the fourth fixed contact is installed corresponding to the fourth movable contact, the third fixed contact is installed corresponding to the second movable contact, and the second fixed contact is installed corresponding to the third movable contact, and the second and third terminal plates are formed to be installed intersectingly inside the housing.

Description

Technical Field

[0001] The present invention relates to the field of relays, and particularly to an electromagnetic relay which is advantageous for application to a large allowable current by forming a parallel current path during conduction through structural design of terminal pins.

Background Art

[0002] An electromagnetic relay is a kind of important key component for performing electrical circuit control by using the electromagnetic principle, and is widely used in fields such as industrial automation, power systems, and communication equipment. The electromagnetic relay has high isolation, stability, and multi-path control capabilities. Especially in an environment with a high current that requires frequent switching, it can effectively cope with a large current load, ensuring that problems caused by overheating or melting of the contact points do not occur. In the design characteristics of the electromagnetic relay, it is made to be a core element during the switching of power loads, the protection of electrical circuits, and the stable operation of the system. In addition, the electromagnetic relay has characteristics such as a simple structure, low cost, and strong anti-interference ability, so it plays an important role in various application fields, for example, in scenarios such as the control of low-frequency switches and the switching of power loads.

[0003] Although the technology of electromagnetic relays has already been quite mature and widely used, there is still room for further improvement in the existing technology to improve the performance and adaptability of electromagnetic relays and meet higher technical requirements and application environments. For example, nowadays, with the development of various electronic products and applications to new forms of energy systems, etc., electromagnetic relays also need to have a higher level of durability. For example, they need to be able to withstand a higher power, that is, a higher current load.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of this, as a result of summarizing the rich experience and expertise in the technical field of the related industry over many years, the inventor of the present invention has proposed a technical solution for a new form of electromagnetic relay.

[0005] The objective of the present invention is to provide an electromagnetic relay that can effectively improve the allowable current strength of the electromagnetic relay by forming parallel pathways through an intersecting design of fixed terminals, thereby reducing contact resistance and providing good heat dissipation capabilities. [Means for solving the problem]

[0006] To achieve the above objective, the electromagnetic relay proposed in the present invention comprises a housing, an electromagnet provided in the housing, a movable armature provided in the housing and located on one side of the electromagnet, a movable contact assembly member provided in the housing and connected to the movable armature, and a fixed contact assembly member, part of which is provided in the housing and part of which is provided outside the housing, wherein the movable contact assembly member has a first contact plate and a second contact plate, the first contact plate has a first movable contact and a second movable contact, the second contact plate has a third movable contact and a fourth movable contact, the fixed contact assembly member has a first terminal plate, a second terminal plate, a third terminal plate and a fourth terminal plate arranged so as not to contact each other, the first terminal plate has a first fixed contact on the part located in the housing, the second terminal plate has a second fixed contact on the part located in the housing, the third terminal plate has a third fixed contact on the part located in the housing, and the fourth terminal plate has a first fixed contact on the part located in the housing The assembly has a fourth fixed contact in part, the portions of the first terminal board and the second terminal board outside the housing are installed corresponding to the position of the first contact board, the portions of the third terminal board and the fourth terminal board outside the housing are installed corresponding to the position of the second contact board, the first fixed contact inside the housing is installed corresponding to the position of the first movable contact, the fourth fixed contact is installed corresponding to the position of the fourth movable contact, the third fixed contact is installed corresponding to the position of the second movable contact, the second fixed contact is installed corresponding to the position of the third movable contact, the second terminal board and the third terminal board are formed to be intersecting inside the housing, and the movable contact assembly receives the interlocking of the movable armature by the electromagnetic action of the electromagnet to cause the first movable contact, second movable contact, third movable contact and fourth movable contact to be in contact with or not in contact with the corresponding first fixed contact, third fixed contact and second fixed contact and fourth fixed contact, respectively.

[0007] More preferably, the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board may be arranged and installed so that the portions outside the housing present a 2x2 configuration.

[0008] More preferably, the housing further includes a first insulating member and a second insulating member, wherein one side of the first insulating member has a first accommodating groove provided for accommodating a portion of the third terminal board, and the other side is provided for contact with the first terminal board, and one side of the second insulating member has a second accommodating groove provided for accommodating a portion of the second terminal board, and the other side is provided for contact with the fourth terminal board, thereby insulating the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board from one another.

[0009] Preferably, the first insulating member has a first stopper plate, a second stopper plate, a third stopper plate, a fourth stopper plate, and a fifth stopper plate, wherein the first stopper plate and the second stopper plate are parallel, and the area of ​​the first stopper plate is larger than that of the second stopper plate, the third stopper plate is L-shaped and is connected perpendicularly to the first stopper plate and the second stopper plate, the fourth stopper plate has a first bend and its sides are connected to the third stopper plate and the second stopper plate, the fifth stopper plate has a second bend and its sides are connected to the first stopper plate, the second stopper plate, and the third stopper plate, the space sandwiched by the first stopper plate, the second stopper plate, the third stopper plate, the fourth stopper plate, and the fifth stopper plate may be formed as the first receiving groove.

[0010] More preferably, the second insulating member has two sixth retaining plates and a seventh retaining plate that are parallel to each other, the seventh retaining plate having a third bent portion, the plurality of sixth retaining plates each being a single stepped piece having a high step and having a large compartment area surface and a small compartment area surface, the seventh retaining plate is placed between the plurality of sixth retaining plates and extends from the end of the plurality of large compartment area surfaces adjacent to the plurality of small compartment area surfaces to the relative diagonal ends of the plurality of large compartment area surfaces, insertion grooves are formed in the plurality of small compartment area surfaces, and a portion of the fourth terminal plate may be located within the insertion grooves.

[0011] More preferably, the bottom side of the second insulating member may have a position limiting member provided for contacting and fixing with the assembly surface of the operating electrical circuit.

[0012] More preferably, the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board may have at least one open groove at their terminal positions outside the housing.

[0013] More preferably, the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board may be arranged and installed such that the portions outside the housing present a 1x4 configuration.

[0014] More preferably, the housing may further include a third insulating member provided between the second terminal board and the third terminal board to insulate the second terminal board and the third terminal board from each other.

[0015] More preferably, the third insulating member has a first assembly portion and a second assembly portion, and is a partitioned region that relatively separates the first assembly portion and the second assembly portion, the first assembly portion has a first housing portion and a second housing portion, the second housing portion is a partitioned region that extends downward relative to the first housing portion, the second assembly portion is located below the first housing portion of the first assembly portion and forms a passage, the first assembly portion is used to house the third terminal board, and a partial partitioned region of the second terminal board may be located in the second assembly portion. [Effects of the Invention]

[0016] In summary, the electromagnetic relay of the present invention utilizes a structure of two contact plates and four terminal plates based on the design applied to the fixed terminals, and reduces contact resistance by forming two parallel paths when conducting, thereby achieving the goal of improving the current tolerance strength of the electromagnetic relay. Furthermore, the present invention is illustrated in various embodiments, and the detailed technical features thereof are as described in the preceding paragraphs. [Brief explanation of the drawing]

[0017] [Figure 1] This is an exploded schematic view of the electromagnetic relay according to the first embodiment of the present invention. [Figure 2] This is an assembled schematic view of the electromagnetic relay according to the first embodiment of the present invention. [Figure 3A] This is a structural schematic view of the first insulating member of the electromagnetic relay according to the first embodiment of the present invention. [Figure 3B] This is a structural schematic view of the first insulating member of the electromagnetic relay according to the first embodiment of the present invention from another perspective. [Figure 4A] This is a structural schematic view of the second insulating member of the electromagnetic relay according to the first embodiment of the present invention. [Figure 4B] This is a structural schematic view of the second insulating member of the electromagnetic relay according to the first embodiment of the present invention from another perspective. [Figure 5] This is an assembled schematic view of the electromagnetic relay according to another embodiment of the first embodiment of the present invention. [Figure 6] This is an exploded schematic view of the electromagnetic relay according to the second embodiment of the present invention. [Figure 7] This is a structural schematic view of the third insulating member of the electromagnetic relay according to the second embodiment of the present invention. [Figure 8] This is an assembled schematic view of the electromagnetic relay according to the second embodiment of the present invention. [Figure 9] This is a plan schematic view of the electromagnetic relay according to the second embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0018] Regarding the content of the present invention, those with ordinary knowledge in the relevant field will clearly understand it from the following description while referring to the attached drawings.

[0019] <First Embodiment> Refer to FIGS. 1 to 4B. They are, respectively, an exploded schematic view of the electromagnetic relay according to the first embodiment of the present invention, an assembled schematic view, a structural schematic view of the first insulating member and a structural schematic view from another perspective of the first insulating member, a structural schematic view of the second insulating member and a structural schematic view from another perspective of the second insulating member. The electromagnetic relay 9 disclosed in the present invention includes a housing 1, an electromagnet 2, a movable armature 3, a movable contact assembly member 4, and a fixed contact assembly member 5.

[0020] The housing 1 may have a structure that includes a removable upper housing and a lower base. For the convenience of illustration, Figure 1 shows the upper housing and lower base of the housing 1 in a separated state, and Figure 2 also clearly shows that the drawing of the upper housing is omitted for the convenience of illustration. The electromagnet 2 is provided inside the housing 1, and the movable armature 3 is provided inside the housing 1 and located on one side of the electromagnet 2. The movable contact assembly member 4 is provided inside the housing 1 and is connected to the movable armature 3. The movable contact assembly member 4 has a first contact plate 41 and a second contact plate 42. The first contact plate 41 has a first movable contact 411 and a second movable contact 412, and the second contact plate 42 has a third movable contact 421 and a fourth movable contact 422. The fixed contact assembly member 5 is provided with one part inside the housing 1 and the other part outside the housing 1. The fixed contact assembly member 5 has a first terminal plate 51, a second terminal plate 52, a third terminal plate 53, and a fourth terminal plate 54, arranged so that they do not come into contact with each other. The portion of the first terminal plate 51 located inside the housing 1 has a first fixed contact 511, the portion of the second terminal plate 52 located inside the housing 1 has a second fixed contact 521, the portion of the third terminal plate 53 located inside the housing 1 has a third fixed contact 531, and the portion of the fourth terminal plate 54 located inside the housing 1 has a fourth fixed contact 541. Of these, the portions of the first terminal board 51 and the second terminal board 52 outside the housing 1 are installed corresponding to the position of the first contact board 41, the portions of the third terminal board 53 and the fourth terminal board 54 outside the housing 1 are installed corresponding to the position of the second contact board 42, the first fixed contact 511 inside the housing 1 is installed corresponding to the position of the first movable contact 411, the fourth fixed contact 541 is installed corresponding to the position of the fourth movable contact 422, and the third fixed contact 531 is installed corresponding to the position of the second movable contact 412, and the second fixed Contact 521 is installed corresponding to the position of the third movable contact 421, and the second terminal plate 52 and the third terminal plate 53 are formed to intersect within the housing 1. The movable contact assembly member 4 receives the interlocking of the movable armature 3 by the electromagnetic action of the electromagnet 2, causing the first movable contact 411, the second movable contact 412, the third movable contact 421, and the fourth movable contact 422 to be in contact with or not in contact with the corresponding first fixed contact 511, the third fixed contact 531, the second fixed contact 521, and the fourth fixed contact 541, respectively.Of these, the first fixed contact 511, third fixed contact 531, second fixed contact 521, and fourth fixed contact 541, as shown in Figure 1, are simply indicated and marked on only one side of the first terminal board 51, second terminal board 52, third terminal board 53, and fourth terminal board 54. However, in practice, the first fixed contact 511, third fixed contact 531, second fixed contact 521, and fourth fixed contact 541 are mounted through the first terminal board 51, second terminal board 52, third terminal board 53, and fourth terminal board 54, which is advantageous for forming contact or non-contact states with the first movable contact 411, second movable contact 412, third movable contact 421, and fourth movable contact 422.

[0021] As a result, according to the above structural features, parallel current paths can be formed during use, thereby effectively reducing resistance and avoiding overheating. This makes it applicable to high loads and currents, simplifies the problem of setting up subsequent electrical loops, and enhances the user experience in sync with the application terminal. In actual applications, the first terminal board 51 and the second terminal board 52 are inputs or outputs of the same source, and the third terminal board 53 and the fourth terminal board 54 are outputs or inputs of the same source, and it can be applied to the assembly and connection of multiple operating electrical circuits. In addition, according to the above structural features, each parallel current path may have two terminal boards as input and output terminals, and it can have a better heat dissipation effect and can more easily comply with relevant safety standards.

[0022] Furthermore, in this embodiment, the first terminal board 51, the second terminal board 52, the third terminal board 53, and the fourth terminal board 54 are arranged so that the portion outside the housing 1 presents a 2x2 configuration, which is advantageous in reducing the volume of the relay, as shown in Figure 2. In addition, to enhance reliable isolation between the terminal boards, the housing 1 further includes a first insulating member 6 and a second insulating member 7. One side of the first insulating member 6 has a first housing groove 60, which is used to accommodate a portion of the third terminal board 53, and the other side is used for contact with the first terminal board 51. One side of the second insulating member 7 has a second housing groove 70, which is used to accommodate a portion of the second terminal board 52, and the other side is used for contact with the fourth terminal board 54, thereby insulating the first terminal board 51, the second terminal board 52, the third terminal board 53, and the fourth terminal board 54 from one another. Furthermore, the installation of the first insulating member 6 and the second insulating member 7 also provides a positioning effect, which helps improve the ease of assembly of each terminal board. For example, the first insulating member 6 and the second insulating member 7 can be used as positioning parts during the assembly of each terminal board. In addition, more preferably, the first insulating member 6 and the second insulating member 7 can be made of a material such as plastic, which provides excellent insulating effect.

[0023] In order to achieve the assembly configuration of the structure of the first insulating member 6 and the first terminal board 51 and third terminal board 53 described above, a suitable example of a structure is provided in which the first insulating member 6 has a first retaining plate 61, a second retaining plate 62, a third retaining plate 63, a fourth retaining plate 64, and a fifth retaining plate 65, wherein the first retaining plate 61 and the second retaining plate 62 are parallel, the area of ​​the first retaining plate 61 is larger than that of the second retaining plate 62, and the third retaining plate 63 is L-shaped and is connected perpendicularly to the first retaining plate 61 and the second retaining plate 62, respectively. The fourth retaining plate 64 has a first bent portion 641, and its side is connected to the third retaining plate 63 and the second retaining plate 62, respectively. The fifth retaining plate 65 has a second bent portion 651, and its side is connected to the first retaining plate 61, the second retaining plate 62, and the third retaining plate 63, respectively. The space sandwiched between the first retaining plate 61, the second retaining plate 62, the third retaining plate 63, the fourth retaining plate 64, and the fifth retaining plate 65 is formed as the first receiving groove 60.

[0024] Furthermore, in order to achieve the assembly configuration of the second insulating member 7, the second terminal plate 52 and the fourth terminal plate 54 as described above, the second insulating member 7 can be made to have two sixth retaining plates 71 and a seventh retaining plate 72 that are parallel to each other, the seventh retaining plate 72 has a third bent portion 721, and each of the multiple sixth retaining plates 71 is a single stepped piece having a high step difference, and has a large compartment area surface 711 and a small compartment area surface 712, the seventh retaining plate 72 is placed between the multiple sixth retaining plates 71 and extends from the ends of the multiple large compartment area surfaces 711 adjacent to the multiple small compartment area surfaces 712 to the relative diagonal ends of the multiple large compartment area surfaces 711, insertion grooves 73 are formed in the multiple small compartment area surfaces 712 and a portion of the fourth terminal plate 54 is located within the insertion grooves 73.

[0025] In addition, to improve convenience and positioning accuracy during assembly of the electromagnetic relay 9 and the external operating electrical circuit, the bottom side of the second insulating member 7 has a position limiting member 74, which is used to contact and fix the assembly surface of the operating electrical circuit (not shown in the figure) with each other.

[0026] Next, refer to Figure 5 together. It is a schematic assembly diagram of an electromagnetic relay of another embodiment of the first embodiment of the present invention. More preferably, the first terminal plate 51, the second terminal plate 52, the third terminal plate 53 and the fourth terminal plate 54 have at least one open groove 519, 529, 539, 549 at their terminal positions outside the housing 1, thereby increasing the rigidity when assembled with an external electrical circuit.

[0027] <Second Embodiment> Next, refer to Figures 6 to 9. These are, respectively, an exploded schematic diagram of the electromagnetic relay of a second embodiment, which is a preferred embodiment of the present invention, a schematic diagram of the structure of the third insulating member, a schematic diagram of the assembly of the electromagnetic relay, and a schematic plan view of the electromagnetic relay. Here, a different structural configuration of an electromagnetic relay 9 is disclosed, in which the first terminal board 51, the second terminal board 52, the third terminal board 53, and the fourth terminal board 54 are arranged and installed so that the portion outside the housing 1 presents a 1 row, 4 columns configuration. Of these, the first fixed contact 511, third fixed contact 531, second fixed contact 521, and fourth fixed contact 541, as shown in Figures 6 and 8, are simply indicated and marked on only one side of the first terminal board 51, second terminal board 52, third terminal board 53, and fourth terminal board 54. However, in practice, the first fixed contact 511, third fixed contact 531, second fixed contact 521, and fourth fixed contact 541 are provided through the first terminal board 51, second terminal board 52, third terminal board 53, and fourth terminal board 54, which is advantageous for forming contact or non-contact states with the first movable contact 411, second movable contact 412, third movable contact 421, and fourth movable contact 422. Furthermore, the arrow symbols in Figure 9 are used to illustrate the direction of current flow after the first fixed contact 511, the third fixed contact 531, the second fixed contact 521, and the fourth fixed contact 541 have made contact and conduction with the first movable contact 411, the second movable contact 412, the third movable contact 421, and the fourth movable contact 422, and these symbols are also clearly indicated.

[0028] In addition, the housing 1 further includes a third insulating member 8, which is provided between the second terminal board 52 and the third terminal board 53. By insulating the second terminal board 52 and the third terminal board 53 from each other, the third insulating member 8 advantageously improves the reliable isolation between the intersecting second terminal board 52 and the third terminal board 53, and at the same time, it may be used to position each terminal board during assembly. Similarly, the third insulating member 8 can be made using a plastic material of your choice. Specifically, in an example of a preferred structure of the third insulating member 8, the third insulating member 8 has a first assembly portion 81 and a second assembly portion 82, and is a partitioned region that relatively separates the first assembly portion 81 and the second assembly portion 82. Of these, the first assembly portion 81 has a first housing portion 811 and a second housing portion 812, the second housing portion 812 is a partitioned region that extends downward relative to the first housing portion 811, and the second assembly portion 82 is located below the first housing portion 811 of the first assembly portion 81 to form a passage, so that the first assembly portion 81 is used to house the third terminal board 53, and a partial partitioned region of the second terminal board 52 is located in the second assembly portion 82.

[0029] In summary, the electromagnetic relay of the present invention utilizes a structure of two contact plates and four terminal plates based on the design of the fixed terminals, and by forming two parallel paths during conduction through cross-arrangement, it reduces contact resistance, thereby achieving the goal of improving the current tolerance strength of the electromagnetic relay. In other words, the design of the fixed terminals connected to the external operating electrical circuit effectively reduces the probability of non-compliance with safety standards and the difficulty of assembly. At the same time, the feature of cross-arranging the third terminal plate and the second terminal plate allows the input terminals and output terminals to be positioned on the same side when the first to fourth terminal plates are connected to the external electrical circuit, thus making it applicable to the normal input and output designs of existing external electrical circuits. Furthermore, the present invention also provides examples of specific structures for electromagnetic relays. For example, the portion of the terminal board outside the housing may be arranged in a 2x2 or 1x4 configuration. In order to improve the reliable isolation and insulation of each terminal board, a first insulating member and a second insulating member may be further installed inside the housing, as in the structural configuration shown in the first embodiment described above. Alternatively, a third insulating member may be further installed inside the housing, as in the structural configuration shown in the second embodiment described above. The present invention also provides more specific structural features of the first, second, and third insulating members. In addition, improvements to the robustness of the connection with the external operating electrical circuit can be achieved by a position limiting member on the bottom side of the second insulating member or by opening grooves at the terminal positions of the terminal boards. [Explanation of Symbols]

[0030] 1 cabinet 2 Electromagnets 3. Movable armature 4. Movable contact assembly members 41 1st contact plate 411 1st movable contact 412 2nd movable contact 42 2nd contact plate 421 3rd movable contact 422 4th movable contact 5 Fixed contact assembly components 51 1st terminal board 511 1st fixed contact 519 Open groove 52 2nd terminal board 521 2nd fixed contact 529 Open groove 53 3rd terminal board 531 3rd fixed contact 539 Open groove 54 4th terminal board 541 4th fixed contact 549 Open groove 6. First insulating member 60 First storage groove 61 First stopper plate 62 Second stopper plate 63 Third stopper plate 64. Fourth retaining plate 641 1st bending section 65. Fifth stopper plate 651 2nd bending section 7. Second insulating member 70 Second storage groove 71. Sixth stopper plate 711 Large section area surface 712 Small area surface 72. 7th stopper plate 721 3rd bending section 73 Insertion groove 74 Position limiting member 8. Third insulating member 81 Assembly Section 1 811 First containment section 812 Second containment section 82 Second Assembly Section 9 Electromagnetic relay

Claims

1. An electromagnetic relay comprising a housing, an electromagnet provided within the housing, a movable armature provided within the housing and located on one side of the electromagnet, a movable contact assembly member provided within the housing and connected to the movable armature, and a fixed contact assembly member, one part of which is provided within the housing and the other part of which is provided outside the housing, The movable contact assembly member comprises a first contact plate having a first movable contact and a second movable contact, and a second contact plate having a third movable contact and a fourth movable contact. The fixed contact assembly member comprises a first terminal plate, a second terminal plate, a third terminal plate, and a fourth terminal plate, such that they do not come into contact with each other, the first terminal plate having a first fixed contact on the portion located inside the housing, the second terminal plate having a second fixed contact on the portion located inside the housing, the third terminal plate having a third fixed contact on the portion located inside the housing, and the fourth terminal plate having a fourth fixed contact on the portion located inside the housing. An electromagnetic relay characterized in that the portions of the first terminal board and the second terminal board outside the housing are installed corresponding to the position of the first contact board, the portions of the third terminal board and the fourth terminal board outside the housing are installed corresponding to the position of the second contact board, the first fixed contact inside the housing is installed corresponding to the position of the first movable contact, the fourth fixed contact is installed corresponding to the position of the fourth movable contact, the third fixed contact is installed corresponding to the position of the second movable contact, the second fixed contact is installed corresponding to the position of the third movable contact, the second terminal board and the third terminal board are formed to be installed in an intersecting manner inside the housing, and the movable contact assembly member receives the interlocking of the movable armature by the electromagnetic action of the electromagnet and causes the first movable contact, the second movable contact, the third movable contact and the fourth movable contact to be in contact with or not in contact with the corresponding first fixed contact, third fixed contact and second fixed contact and fourth fixed contact, respectively.

2. The electromagnetic relay according to claim 1, characterized in that the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board are arranged and installed such that the portions outside the housing present a 2x2 configuration.

3. The electromagnetic relay according to claim 2, further comprising a first insulating member and a second insulating member within the housing, wherein one side of the first insulating member has a first accommodating groove provided for accommodating a portion of the third terminal plate, and the other side is provided for contact with the first terminal plate, and one side of the second insulating member has a second accommodating groove provided for accommodating a portion of the second terminal plate, and the other side is provided for contact with the fourth terminal plate, thereby insulating the first terminal plate, the second terminal plate, the third terminal plate, and the fourth terminal plate from one another.

4. The electromagnetic relay according to claim 3, wherein the first insulating member comprises a first stopper plate, a second stopper plate, a third stopper plate, a fourth stopper plate, and a fifth stopper plate, wherein the first stopper plate and the second stopper plate are parallel, and the area of ​​the first stopper plate is larger than that of the second stopper plate, the third stopper plate is L-shaped and is connected perpendicularly to the first stopper plate and the second stopper plate, respectively, the fourth stopper plate has a first bend and its side is connected to the third stopper plate and the second stopper plate, respectively, the fifth stopper plate has a second bend and its side is connected to the first stopper plate, the second stopper plate, and the third stopper plate, respectively, and the space sandwiched by the first stopper plate, the second stopper plate, the third stopper plate, the fourth stopper plate, and the fifth stopper plate is formed as the first housing groove.

5. The electromagnetic relay according to claim 3, wherein the second insulating member has two sixth retaining plates and a seventh retaining plate that are parallel to each other, the seventh retaining plate has a third bent portion, the plurality of sixth retaining plates are each a single stepped piece having a high step and having a large compartment area surface and a small compartment area surface, the seventh retaining plate is placed between the plurality of sixth retaining plates and extends from the end of the plurality of large compartment area surfaces adjacent to the plurality of small compartment area surfaces to the relative diagonal ends of the plurality of large compartment area surfaces, insertion grooves are formed in the plurality of small compartment area surfaces and a portion of the fourth terminal plate is located within the insertion grooves.

6. The electromagnetic relay according to claim 5, characterized in that the bottom side of the second insulating member has a position limiting member provided for mutual contact and fixing with the assembly surface of the operating electrical circuit.

7. The electromagnetic relay according to any one of claims 1 to 6, characterized in that the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board each have at least one open groove at their terminal positions outside the housing.

8. The electromagnetic relay according to claim 1, characterized in that the first terminal board, the second terminal board, the third terminal board, and the fourth terminal board are arranged and installed such that the portions outside the housing present a 1x4 configuration.

9. The electromagnetic relay according to claim 8, further comprising a third insulating member provided between the second terminal plate and the third terminal plate within the housing for insulating the second terminal plate and the third terminal plate from each other.

10. The electromagnetic relay according to claim 9, characterized in that the third insulating member has a first assembly portion and a second assembly portion, and is a partitioned region that relatively separates the first assembly portion and the second assembly portion, the first assembly portion has a first housing portion and a second housing portion, the second housing portion is a partitioned region that extends downward relative to the first housing portion, the second assembly portion is located below the first housing portion of the first assembly portion and forms a passage, the first assembly portion is used to house the third terminal plate, and a partial partitioned region of the second terminal plate is located in the second assembly portion.

Images