Electromagnetic relay

Abstract

This utility model belongs to the field of electrical switch technology and discloses an electromagnetic relay. It includes a base, a contact assembly, and a connecting plate. Each base is provided with a contact assembly, and both sides of the base are provided with first connecting members. Both sides of the connecting plate are provided with second connecting members. A connecting plate is provided between two adjacent bases, and the first connecting member on one side of the base is detachably connected to the second connecting member on one side of the connecting plate. The detachable connection of the base via the connecting plate modularizes the electromagnetic relay, improving its adaptability, maintainability, and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an electromagnetic relay. Background Technology

[0002] The base of an electromagnetic relay is a crucial component that supports and connects the relay, securing it and providing an electrical connection interface. The design of the base is typically directly related to the number of relay contacts (e.g., 2z, 4z, 8z, etc.), where "z" represents the number of contacts.

[0003] In traditional designs, relay bases are typically manufactured using individual molds based on the number of contacts. For example, a 2z base is only suitable for relays with two sets of contacts, and a 4z base is only suitable for relays with four sets of contacts. This design approach requires developing different molds for relays with different contact numbers. This leads to the following problems with existing electromagnetic relays: 1. High mold costs: Each base requires independent mold development, resulting in high manufacturing costs; 2. Insufficient flexibility: Traditional bases cannot be flexibly combined according to actual needs. For example, if a user requires a non-standard contact number such as 6z, it cannot be achieved using existing bases; 3. Poor maintainability: If a base with a certain number of contacts is damaged or needs replacement, the entire base may need to be replaced, making partial repair or replacement impossible.

[0004] Therefore, there is an urgent need for an electromagnetic relay to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide an electromagnetic relay that can be modularized by utilizing the splicable characteristics of the base, thereby improving the adaptability, maintainability and reducing the cost of the electromagnetic relay.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An electromagnetic relay includes a base, a contact assembly, and a connecting plate. Each base is provided with the contact assembly. A first connector is provided on both sides of each base. A second connector is provided on both sides of each connecting plate. A connecting plate is provided between two adjacent bases. The first connector on one side of each base is detachably connected to the second connector on one side of the connecting plate.

[0008] Optionally, the first connector includes a connecting slot, and the second connector includes a connecting buckle, wherein the connecting buckle can extend into the connecting slot and engage with it.

[0009] Optionally, the connecting slot includes an insertion slot and a first snap-fit ​​slot. The insertion slot is disposed on one side of the base and extends along a first direction. The first snap-fit ​​slot is disposed on the base and extends along a second direction. The first snap-fit ​​slot communicates with the insertion slot. The second direction is perpendicular to the first direction.

[0010] The aforementioned connecting buckle includes an insertion part and a snap-fit ​​part. One end of the insertion part is connected to the side of the connecting plate, and the snap-fit ​​part is located at the end of the insertion part away from the connecting plate. The insertion part is inserted into the insertion groove, and the snap-fit ​​part snaps into the groove wall of the first snap-fit ​​groove.

[0011] Optionally, the first connector further includes a positioning hole disposed on the base, and the second connector further includes a positioning protrusion disposed on the connecting plate and inserted into the positioning hole.

[0012] Optionally, the first connector further includes a limiting groove disposed on the base, and the second connector further includes a first limiting protrusion disposed on the connecting plate, the first limiting protrusion being inserted into the limiting groove, and the first limiting protrusion abutting against the bottom of the limiting groove.

[0013] Optionally, the first connector includes a limiting abutment portion disposed on the base, and the second connector further includes a second limiting protrusion disposed on the connecting plate, the second limiting protrusion abutting against the limiting abutment portion.

[0014] Optionally, the electromagnetic relay further includes a housing, the base and the contact assembly are both disposed inside the housing, the inner wall of the housing is provided with a snap fastener, and the base is also provided with a second snap groove, the snap fastener being snapped into the second snap groove.

[0015] Optionally, the contact assembly includes a normally closed stationary reed assembly, a normally open stationary reed assembly, and a moving reed assembly. The normally closed stationary reed assembly, the normally open stationary reed assembly, and the moving reed assembly are all connected to the base. The normally closed stationary contact of the normally closed stationary reed assembly and the normally open stationary contact of the normally open stationary reed assembly are respectively disposed on both sides of the moving contact of the moving reed assembly. The moving contact can be selectively connected to the normally closed stationary contact or the normally open stationary contact.

[0016] Optionally, the normally closed stationary reed assembly includes a normally closed stationary reed extending along a second direction, one end of which is connected to the normally closed stationary contact, and the normally closed stationary reed having a first clearance groove.

[0017] The normally open stationary reed assembly includes a normally open stationary reed, which extends along the second direction. One end of the normally open stationary reed is connected to the normally open stationary contact, and the normally open stationary reed is provided with a second clearance groove.

[0018] The aforementioned movable reed assembly includes a movable connecting piece and a movable reed. The movable connecting piece includes a first part, a second part, and a third part. The first part and the second part both extend along the second direction. The normally closed stationary reed and the normally open stationary reed are placed between the first part and the second part. The third part passes through the first clearance groove and the second clearance groove, and its two ends are respectively connected to the first part and the second part. One end of the movable reed is connected to the second part, and the other end of the movable reed is connected to the movable contact, which is placed between the normally closed stationary contact and the normally open stationary contact.

[0019] Optionally, a first mounting groove is provided on both sides of the aforementioned seat, the first mounting groove extends along the aforementioned second direction, and the normally closed stationary spring is inserted into the aforementioned first mounting groove.

[0020] The above-mentioned seat body is provided with a second mounting groove on both sides, the second mounting groove extends along the second direction, and the normally open stationary spring is inserted into the second mounting groove;

[0021] Both sides of the aforementioned base are provided with a third mounting groove, which includes a first groove, a second groove, and a third groove. The first groove and the second groove both extend along the second direction and are respectively located on both sides of the first mounting groove and the second mounting groove. The two ends of the third groove are respectively connected to the first groove and the second groove. The first part is inserted into the first groove, the second part is inserted into the second groove, and the third part is inserted into the third groove.

[0022] Optionally, both sides of the aforementioned base are provided with contact spaces, the aforementioned first mounting groove and the aforementioned second mounting groove are connected to one side of the aforementioned contact space, the aforementioned normally closed stationary contact and the aforementioned normally open stationary contact are placed in the aforementioned contact space, and the other side of the aforementioned contact space is also provided with a connecting hole, the aforementioned moving spring passes through the aforementioned connecting hole, and the aforementioned moving contact is placed in the aforementioned contact space.

[0023] Optionally, the electromagnetic relay further includes an electromagnetic system, which includes an electromagnetic coil, an armature, and a coil connecting piece. The base is provided with a receiving groove, and the electromagnetic coil is disposed in the receiving groove. The armature is connected to the moving spring. When the electromagnetic coil is energized, the armature drives the moving spring to move so that the moving contact engages with the normally open stationary contact. A fourth mounting groove is provided on both sides of the base, and the coil connecting piece is inserted into the fourth mounting groove. One end of the coil connecting piece is electrically connected to the lead terminal of the electromagnetic coil, and the other end of the coil connecting piece is placed outside the base and is used for electrical connection with an external circuit.

[0024] The beneficial effects of this utility model are:

[0025] This utility model provides an electromagnetic relay with two contact components on each base, so that one base and two contact components are combined to form a 2-contact group, thereby making it modular. Then, it can be detachably connected by a second connector on one side of the connecting plate and a first connector on one side of the base, so that multiple 2-contact groups can be spliced ​​to form 4-contact groups, 6-contact groups, etc. This allows the electromagnetic relay to be assembled into an electromagnetic relay with the required contact points according to the needs, improving the adaptability of the electromagnetic relay, and making replacement and maintenance convenient, thereby improving maintainability and reducing costs. Attached Figure Description

[0026] Figure 1 This is an isometric view of the electromagnetic relay provided in a specific embodiment of this utility model;

[0027] Figure 2 This is an exploded view of the electromagnetic relay provided in a specific embodiment of this utility model;

[0028] Figure 3 This is an isometric view of the connecting plate provided in a specific embodiment of this utility model;

[0029] Figure 4 This is an axonometric view of the base body from one perspective, provided in a specific embodiment of this utility model;

[0030] Figure 5 This is an axonometric view of the seat body from another perspective provided in a specific embodiment of this utility model;

[0031] Figure 6 This is an isometric view of the contact component provided in a specific embodiment of this utility model;

[0032] Figure 7 This is an isometric view of the normally closed stationary reed assembly provided in a specific embodiment of this utility model;

[0033] Figure 8 This is an isometric view of the normally open stationary reed assembly provided in a specific embodiment of this utility model;

[0034] Figure 9 This is an isometric view of the moving spring assembly provided in a specific embodiment of this utility model.

[0035] In the picture:

[0036] 10. Base; 11. First connector; 111. Connecting slot; 1111. Insertion slot; 1112. First snap-fit ​​slot; 112. Positioning hole; 113. Limiting slot; 114. Limiting abutment part; 115. Second snap-fit ​​slot; 12. First mounting slot; 13. Second mounting slot; 14. Third mounting slot; 141. First slot; 142. Second slot; 143. Third slot; 15. Contact space; 16. Communicating hole; 17. Receiving slot; 18. Fourth mounting slot;

[0037] 20. Contact assembly; 21. Normally closed stationary spring assembly; 211. Normally closed stationary contact; 212. Normally closed stationary spring; 2121. First clearance groove; 22. Normally open stationary spring assembly; 221. Normally open stationary contact; 222. Normally open stationary spring; 2221. Second clearance groove; 23. Moving spring assembly; 231. Moving contact; 232. Moving connecting piece; 2321. First part; 2322. Second part; 2323. Third part; 233. Moving spring;

[0038] 30. Connecting plate; 31. Second connecting piece; 311. Connecting buckle; 3111. Insertion part; 3112. Snap-fit ​​part; 312. Positioning protrusion; 313. First limiting protrusion; 314. Second limiting protrusion;

[0039] 41. Coil connecting piece. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] The following reference Figures 1 to 9 This invention introduces the electromagnetic relay provided by this utility model.

[0045] It should be noted that the first direction in this embodiment is Figure 1 The X direction in the middle, the second direction is Figure 1 In the Y direction, the third direction is Figure 1 In the equation, the Z direction, X direction, Y direction and Z direction are all perpendicular to each other.

[0046] Please refer to Figure 1 and Figure 2 This embodiment provides an electromagnetic relay, which includes a base 10, a contact assembly 20 and a connecting plate 30. Each base 10 is provided with a contact assembly 20. Both sides of the base 10 are provided with first connecting members 11. Both sides of the connecting plate 30 are provided with second connecting members 31. A connecting plate 30 is provided between two adjacent bases 10, and the first connecting member 11 on one side of the base 10 and the second connecting member 31 on one side of the connecting plate 30 are detachably connected.

[0047] In this embodiment, each base 10 of the electromagnetic relay is provided with two contact components 20, so that one base 10 and two contact components 20 are paired to form a 2-contact group, thereby modularizing it. Then, it can be detachably connected to the second connector 31 on one side of the connecting plate 30 and the first connector 11 on the side of the base 10, so that multiple 2-contact groups can be spliced ​​to form 4-contact groups, 6-contact groups, and other multi-contact groups. This allows the electromagnetic relay to be assembled into an electromagnetic relay with the required contact points according to the needs, improving the adaptability of the electromagnetic relay, and making replacement and maintenance convenient, thereby improving maintainability and reducing costs.

[0048] For example, in this embodiment, there are two bases 10, one connecting plate 30, and four contact components 20, thereby realizing the formation of a 4-contact electromagnetic relay.

[0049] In this embodiment, both the base 10 and the connecting plate 30 have a U-shaped structure. The base 10 includes a base and two side walls, which are spaced apart on one side of the base. The base and the two side walls form a groove structure, allowing for the installation and accommodation of other components in the electromagnetic relay. The connecting plate 30 includes a base connecting portion and two side wall connecting portions, which are spaced apart on one side of the base connecting portion. The base connecting portion and the two side wall connecting portions form a groove structure, thus creating a structure with the same cross-section as the base 10, facilitating detachable connection of each base 10.

[0050] Specifically, the first connector 11 is disposed on the base and the two side walls, and the second connector 31 is disposed on the base connecting part and the two side wall connecting parts, so as to achieve a stable connection between the base 10 and the connecting plate 30 at various positions. More specifically, in this embodiment, the first connector 11 is specifically disposed on both sides of the base 10 along the first direction, and the second connector 31 is specifically disposed on both sides of the connecting plate 30 along the first direction.

[0051] More specifically, one of the first connector 11 and the second connector 31 is a plurality of slotted connection structures, and the other is a plurality of protruding connection structures, so as to achieve a detachable connection between the two, which is convenient for connection and disassembly. For example, in this embodiment, the first connector 11 is a plurality of slotted connection structures and the second connector 31 is a plurality of protruding connection structures, which makes the outer surface of the multi-contact group formed after splicing multiple bases 10 relatively flat and without connection protrusions, thereby avoiding interference with the housing in the electromagnetic relay or causing low space utilization.

[0052] Please refer to Figures 3 to 5Specifically, the first connector 11 includes a connecting slot 111, and the second connector 31 includes a connecting buckle 311. The connecting buckle 311 can extend into and engage with the connecting slot 111, thereby enabling a detachable connection between one side of the base 10 and one side of the connecting plate 30. Exemplarily, in this embodiment, the connecting slot 111 is disposed on the base, and the connecting buckle 311 is disposed on the base connecting portion.

[0053] More specifically, the connecting slot 111 includes an insertion slot 1111 and a first engaging slot 1112. The insertion slot 1111 is disposed on one side of the base 10 and extends along a first direction. The first engaging slot 1112 is disposed on the base 10 and extends along a second direction. The first engaging slot 1112 communicates with the insertion slot 1111. The connecting buckle 311 includes an insertion part 3111 and an engaging part 3112. One end of the insertion part 3111 is connected to the side of the connecting plate 30. The engaging part 3112 is disposed at the end of the insertion part 3111 away from the connecting plate 30. The insertion part 3111 is inserted into the insertion slot 1111, and the engaging part 3112 engages with the groove wall of the first engaging slot 1112. The insertion slot 1111 is provided to limit the insertion part 3111, and the first snap-fit ​​slot 1112 is provided to snap-fit ​​the snap-fit ​​part 3112, thereby achieving the limiting and detachable connection between the connecting plate 30 and the base 10.

[0054] Among them, the connecting slots 111 on the same base 10 can be combined into one, that is, the insertion slot 1111 is opened through the base 10 along the first direction, and the first snap-fit ​​slot 1112 is provided with two slot walls along the first direction. The two slot walls can be snapped into the snap-fit ​​parts 3112 of two different connecting plates 30 respectively. Thus, the base 10 can be detachably connected to the corresponding connecting plates 30 on both sides along the first direction through the setting of a connecting slot 111.

[0055] Optionally, the connecting slot 111 is located on one side of the base in the seat 10 near the center, and the connecting buckle 311 is located on one side of the base connection near the center. This ensures the reliability of the connection between the seat 10 and the connecting plate 30 and avoids the problem of unstable connection on the other side caused by the connecting slot 111 and the connecting buckle 311 being located near the outer periphery. Of course, in other embodiments, the connecting slot 111 and the connecting buckle 311 may both be located near the outer periphery, which is not specifically limited here.

[0056] Optionally, the connecting slot 111 and the connecting buckle 311 are provided in one, two or more sets, which can be adapted to actual needs and are not specifically limited here.

[0057] Specifically, the first connector 11 further includes a positioning hole 112, which is disposed on the base 10. The second connector 31 further includes a positioning protrusion 312, which is disposed on the connecting plate 30 and inserted into the positioning hole 112. Through the cooperation of the positioning protrusion 312 and the positioning hole 112, the positioning and guiding function of the connection between the connecting plate 30 and the base 10 is realized, and at the same time, it has a certain limiting function for the connection between the two, thus improving the stability of the connection between the connecting plate 30 and the base 10.

[0058] The positioning holes 112 on the same base 10 can be combined into one, that is, the positioning hole 112 is opened through the base 10 along the first direction, and the positioning protrusion 312 can be inserted into either side of the positioning hole 112 along the first direction. Thus, the positioning connection between the two sides of the base 10 and the corresponding connecting plate 30 along the first direction can be achieved by setting a positioning hole 112.

[0059] For example, in this embodiment, the positioning hole 112 is disposed on the base and spaced apart from the connecting slot 111, and the positioning protrusion 312 is disposed on the base connecting part and spaced apart from the connecting buckle 311, thereby realizing the limiting connection of multiple positions between the base of the seat body 10 and the base connecting part of the connecting plate 30.

[0060] Optionally, the positioning protrusions 312 and the positioning holes 112 are provided in one, two or more sets, which can be adapted to actual needs and are not specifically limited here.

[0061] Specifically, the first connector 11 further includes a limiting groove 113, which is disposed on the base 10. The second connector 31 further includes a first limiting protrusion 313, which is disposed on the connecting plate 30. The first limiting protrusion 313 is inserted into the limiting groove 113 and abuts against the bottom of the limiting groove 113, thereby further realizing the limiting effect between the base 10 and the connecting plate 30, and thus further improving the connection stability between the connecting plate 30 and the base 10.

[0062] For example, in this embodiment, the limiting groove 113 is disposed on the base, and the limiting groove 113 and the positioning hole 112 are respectively disposed at intervals on both sides of the connecting slot 111. The first limiting protrusion 313 is disposed on the base connecting part, and the first limiting protrusion 313 and the positioning protrusion 312 are respectively disposed at intervals on both sides of the connecting buckle 311, thereby realizing the limiting connection between the base of the seat body 10 and the base connecting part of the connecting plate 30 at multiple positions, so as to improve the connection stability between the base of the seat body 10 and the base connecting part of the connecting plate 30.

[0063] Optionally, the first limiting protrusion 313 and the limiting groove 113 are provided in one, two or more sets, which can be adapted to actual needs and are not specifically limited here.

[0064] For example, in this embodiment, due to the coordinated arrangement of multiple sets of connection, positioning and limiting structures, each of the above-mentioned first connector 11 has a connection slot 111, a connection buckle 311, a positioning protrusion 312, a positioning hole 112, a first limiting protrusion 313 and a limiting groove 113, which can ensure the connection stability between the base connection part of the connecting plate 30 and the seat body 10.

[0065] Specifically, the first connector 11 further includes a limiting abutment portion 114, which is disposed on the seat 10. The second connector 31 further includes a second limiting protrusion 314, which is disposed on the connecting plate 30 and abuts against the limiting abutment portion 114. Exemplarily, in this embodiment, the limiting abutment portion 114 is disposed on the side wall, and the second limiting protrusion 314 is disposed on the side wall connecting portion, thereby achieving limiting connections at multiple positions between the side wall of the seat 10 and the side wall connecting portion of the connecting plate 30, thus improving the connection stability between the seat 10 and the connecting plate 30.

[0066] Optionally, one, two, or more sets of limiting abutment portions 114 and second limiting protrusions 314 are provided in a one-to-one correspondence, which can be adapted to actual needs and are not specifically limited here. For example, in this embodiment, there are two limiting abutment portions 114. One of the two limiting abutment portions 114 is a side wall of the seat 10 along a third direction, and the other is at least one groove wall of a groove structure. The groove structure is formed on the side wall of the seat 10 near the other side along the third direction, so that one second limiting protrusion 314 abuts against the side wall of the seat 10 along the third direction, and the other limiting protrusion abuts against the two groove walls of the groove structure on the side wall of the seat 10 along the third direction, thereby better realizing the limiting connection between the side wall of the seat 10 and the side wall connection portion of the connecting plate 30.

[0067] Furthermore, the electromagnetic relay also includes a housing, with the base 10 and contact assembly 20 both disposed within the housing. The inner wall of the housing is provided with a snap-fit ​​buckle, and the base 10 is also provided with a second snap-fit ​​groove 115. The snap-fit ​​buckle snaps into the second snap-fit ​​groove 115, thereby realizing a detachable connection between the base 10 and the housing.

[0068] Specifically, the second slot 115 is provided on any side of the base 10 along a third direction to achieve connection with the outer shell.

[0069] Optionally, the second card slot 115 and the card buckle are provided with one, two or more sets, which can be adapted to actual needs and are not specifically limited here.

[0070] Please refer to Figures 6 to 9 In this embodiment, the contact assembly 20 includes a normally closed stationary reed assembly 21, a normally open stationary reed assembly 22, and a movable reed assembly 23. All three assemblies are connected to the base 10. The normally closed stationary contact 211 of the normally closed stationary reed assembly 21 and the normally open stationary contact 221 of the normally open stationary reed assembly 22 are respectively disposed on both sides of the movable contact 231 of the movable reed assembly 23. The movable contact 231 can selectively connect to either the normally closed stationary contact 211 or the normally open stationary contact 221. Specifically, under normal circumstances, the movable contact 231 is connected to the normally closed stationary contact 211. By driving the movable reed assembly 23, the movable contact 231 can be disconnected from the normally closed stationary contact 211 and connected to the normally open stationary contact 221.

[0071] Specifically, the normally closed stationary reed assembly 21 includes a normally closed stationary reed 212, which extends along the second direction. One end of the normally closed stationary reed 212 is connected to a normally closed stationary contact 211, and the normally closed stationary reed 212 has a first clearance groove 2121. The normally open stationary reed assembly 22 includes a normally open stationary reed 222, which extends along the second direction. One end of the normally open stationary reed 222 is connected to a normally open stationary contact 221, and the normally open stationary reed 222 has a second clearance groove 2221. The movable reed assembly 23 includes a movable connecting piece 232 and a movable reed 233. The movable connecting piece 232 includes a first part 232. 1. The second part 2322 and the third part 2323, the first part 2321 and the second part 2322 both extend along the second direction. The normally closed stationary spring 212 and the normally open stationary spring 222 are positioned between the first part 2321 and the second part 2322. The third part 2323 passes through the first clearance groove 2121 and the second clearance groove 2221 and its two ends are respectively connected to the first part 2321 and the second part 2322. One end of the moving spring 233 is connected to the second part 2322, and the other end of the moving spring 233 is connected to the moving contact 231, which is positioned between the normally closed stationary contact 211 and the normally open stationary contact 221. With the above arrangement, the installation of each structure within the contact assembly 20 can be realized, and the moving contact 231 can be driven by driving the moving spring 233.

[0072] Optionally, the moving connecting piece 232 is provided with a narrow side at the position where it passes through the first clearance groove 2121 and the second clearance groove 2221, so as to avoid contact and interference between the moving connecting piece 232 and the normally closed stationary spring 212 and the normally open stationary spring 222 respectively, and also to reduce the size of the contact assembly 20 along the first direction and improve the volume utilization rate.

[0073] Please refer to Figure 1, Figure 4 and Figure 5 Optionally, the seat body 10 is provided with a first mounting groove 12 on both sides. The first mounting groove 12 extends along the second direction. The normally closed stationary spring 212 is inserted into the first mounting groove 12, so that the seat body 10 can be used to install the normally closed stationary spring 212.

[0074] Optionally, a second mounting groove 13 is provided on both sides of the seat 10. The second mounting groove 13 extends along the second direction, and the normally open stationary spring 222 is inserted into the second mounting groove 13; thus, the seat 10 can be used to install the normally open stationary spring assembly 22.

[0075] Optionally, a third mounting groove 14 is provided on both sides of the seat 10. The third mounting groove 14 includes a first groove 141, a second groove 142 and a third groove 143. The first groove 141 and the second groove 142 both extend along the second direction, and the first groove 141 and the second groove 142 are respectively located on both sides of the first mounting groove 12 and the second mounting groove 13. The two ends of the third groove 143 are respectively connected to the first groove 141 and the second groove 142. The first part 2321 is inserted into the first groove 141, the second part 2322 is inserted into the second groove 142 and the third part 2323 is inserted into the third groove 143; thus, the seat 10 can be used to install the moving spring assembly 23.

[0076] Specifically, the base 10 has contact spaces 15 on both sides. The first mounting groove 12 and the second mounting groove 13 are connected to one side of the contact space 15. The normally closed stationary contact 211 and the normally open stationary contact 221 are placed in the contact space 15. The other side of the contact space 15 is also provided with a connecting hole 16. The moving spring 233 passes through the connecting hole 16 and the moving contact 231 is placed in the contact space 15. This allows for the installation and accommodation of the moving contact 231, the normally closed stationary contact 211 and the normally open stationary contact 221, and separates them from other spaces to form an independent working area.

[0077] Please refer to Figure 1 , Figure 4 and Figure 5 Furthermore, the electromagnetic relay also includes an electromagnetic system, which includes an electromagnetic coil, an armature, and a coil connecting piece 41. The armature is connected to a moving spring 233. When the electromagnetic coil is energized, it causes the armature to move the moving spring 233, causing the moving contact 231 to engage with the normally open stationary contact 221, thereby driving the moving contact 231. One end of the coil connecting piece 41 is electrically connected to the lead terminal of the electromagnetic coil, and the other end of the coil connecting piece 41 is placed outside the base 10 and is used for electrical connection with an external circuit. That is, the electromagnetic coil, the coil connecting piece 41, and the external circuit form a closed circuit. By controlling the opening and closing of this closed circuit through the circuit board in the external circuit, the energization of the electromagnetic coil is controlled, thereby driving the position of the armature and thus driving the moving contact 231.

[0078] Optionally, the base 10 is provided with a receiving groove 17, and the electromagnetic coil is placed in the receiving groove 17 to accommodate the electromagnetic coil.

[0079] Alternatively, a fourth mounting groove 18 is provided on both sides of the base 10, and the coil connecting piece 41 is inserted into the fourth mounting groove 18 to realize the installation and accommodation of the coil connecting piece 41.

[0080] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electromagnetic relay, characterized by The device includes a seat (10), a contact assembly (20), and a connecting plate (30). Each seat (10) is provided with the contact assembly (20). Each seat (10) has a first connector (11) on both sides. Each connecting plate (30) has a second connector (31) on both sides. The connecting plate (30) is provided between two adjacent seats (10). The first connector (11) on one side of the seat (10) and the second connector (31) on one side of the connecting plate (30) are detachably connected.

2. The electromagnetic relay according to claim 1, characterized in that, The first connector (11) includes a connecting slot (111), and the second connector (31) includes a connecting buckle (311), which can extend into the connecting slot (111) and engage with the connecting slot (111).

3. The electromagnetic relay according to claim 2, characterized in that, The connecting slot (111) includes an insertion slot (1111) and a first snap-fit ​​slot (1112). The insertion slot (1111) is disposed on one side of the base (10) and extends along a first direction. The first snap-fit ​​slot (1112) is disposed on the base (10) and extends along a second direction. The first snap-fit ​​slot (1112) communicates with the insertion slot (1111). The second direction is perpendicular to the first direction. The connecting buckle (311) includes an insertion part (3111) and a snap-fit ​​part (3112). One end of the insertion part (3111) is connected to the side of the connecting plate (30). The snap-fit ​​part (3112) is located at the end of the insertion part (3111) away from the connecting plate (30). The insertion part (3111) is inserted into the insertion groove (1111), and the snap-fit ​​part (3112) snaps into the groove wall of the first snap-fit ​​groove (1112).

4. The electromagnetic relay according to claim 2, characterized in that, The first connector (11) further includes a positioning hole (112) disposed on the base (10), and the second connector (31) further includes a positioning protrusion (312) disposed on the connecting plate (30) and inserted into the positioning hole (112).

5. The electromagnetic relay according to claim 4, characterized in that, The first connector (11) further includes a limiting groove (113), which is disposed on the seat (10). The second connector (31) further includes a first limiting protrusion (313), which is disposed on the connecting plate (30). The first limiting protrusion (313) is inserted into the limiting groove (113), and the first limiting protrusion (313) abuts against the bottom of the limiting groove (113).

6. The electromagnetic relay according to claim 5, characterized in that The first connector (11) includes a limiting abutment portion (114) disposed on the seat (10). The second connector (31) also includes a second limiting protrusion (314) disposed on the connecting plate (30) and abuts against the limiting abutment portion (114).

7. The electromagnetic relay according to claim 1, characterized in that, The electromagnetic relay also includes a housing, and the base (10) and the contact assembly (20) are both disposed inside the housing. The inner wall of the housing is provided with a snap fastener, and the base (10) is also provided with a second snap slot (115), and the snap fastener is snapped into the second snap slot (115).

8. The electromagnetic relay according to claim 1, characterized in that, The contact assembly (20) includes a normally closed stationary reed assembly (21), a normally open stationary reed assembly (22), and a moving reed assembly (23). The normally closed stationary reed assembly (21), the normally open stationary reed assembly (22), and the moving reed assembly (23) are all connected to the seat (10). The normally closed stationary contact (211) of the normally closed stationary reed assembly (21) and the normally open stationary contact (221) of the normally open stationary reed assembly (22) are respectively disposed on both sides of the moving contact (231) of the moving reed assembly (23). The moving contact (231) can be selectively connected to the normally closed stationary contact (211) or the normally open stationary contact (221).

9. The electromagnetic relay according to claim 8, characterized in that, The normally closed stationary reed assembly (21) includes a normally closed stationary reed (212), which extends along a second direction. One end of the normally closed stationary reed (212) is connected to the normally closed stationary contact (211), and the normally closed stationary reed (212) has a first clearance groove (2121). The normally open stationary reed assembly (22) includes a normally open stationary reed (222), which extends along the second direction. One end of the normally open stationary reed (222) is connected to the normally open stationary contact (221), and the normally open stationary reed (222) is provided with a second clearance groove (2221). The movable reed assembly (23) includes a movable connecting piece (232) and a movable reed (233). The movable connecting piece (232) includes a first part (2321), a second part (2322), and a third part (2323). The first part (2321) and the second part (2322) both extend along the second direction. The normally closed stationary reed (212) and the normally open stationary reed (222) are located between the first part (2321) and the second part (2322). The third part (2323) passes through the first clearance groove (2121) and the second clearance groove (2221) and its two ends are respectively connected to the first part (2321) and the second part (2322). One end of the moving spring (233) is connected to the second part (2322), and the other end of the moving spring (233) is connected to the moving contact (231). The moving contact (231) is located between the normally closed stationary contact (211) and the normally open stationary contact (221).

10. The electromagnetic relay according to claim 9, characterized in that, The seat (10) is provided with a first mounting groove (12) on both sides. The first mounting groove (12) extends along the second direction, and the normally closed stationary spring (212) is inserted into the first mounting groove (12). The seat (10) is provided with a second mounting groove (13) on both sides. The second mounting groove (13) extends along the second direction, and the normally open stationary spring (222) is inserted into the second mounting groove (13). The base (10) is provided with a third mounting groove (14) on both sides. The third mounting groove (14) includes a first groove (141), a second groove (142) and a third groove (143). The first groove (141) and the second groove (142) extend along the second direction. The first groove (141) and the second groove (142) are respectively located on both sides of the first mounting groove (12) and the second mounting groove (13). The two ends of the third groove (143) are respectively connected to the first groove (141) and the second groove (142). The first part (2321) is inserted into the first groove (141), the second part (2322) is inserted into the second groove (142), and the third part (2323) is inserted into the third groove (143).

11. The electromagnetic relay according to claim 10, characterized in that The base (10) has contact spaces (15) on both sides. The first mounting groove (12) and the second mounting groove (13) are connected to one side of the contact space (15). The normally closed stationary contact (211) and the normally open stationary contact (221) are placed in the contact space (15). The other side of the contact space (15) is also provided with a connecting hole (16). The moving spring (233) passes through the connecting hole (16), and the moving contact (231) is placed in the contact space (15).

12. The electromagnetic relay according to claim 9, characterized in that, The electromagnetic relay also includes an electromagnetic system, which includes an electromagnetic coil, an armature, and a coil connecting piece (41). The base (10) is provided with a receiving groove (17), and the electromagnetic coil is disposed in the receiving groove (17). The armature is connected to the moving spring (233). The electromagnetic coil is energized to cause the armature to drive the moving spring (233) to move so that the moving contact (231) is attracted to the normally open stationary contact (221). The base (10) is provided with a fourth mounting groove (18) on both sides. The coil connecting piece (41) is inserted into the fourth mounting groove (18). One end of the coil connecting piece (41) is electrically connected to the lead terminal of the electromagnetic coil, and the other end of the coil connecting piece (41) is placed outside the base (10) and is used to be electrically connected to an external circuit.

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