electromagnetic relay

Abstract

The present invention discloses an electromagnetic relay, comprising an electromagnetic system, a base assembly, and a transmission member. The normally closed contacts and normally open contacts of the movable spring assembly and the static spring assembly of the base assembly are correspondingly arranged. The elastic member is connected between the yoke and the transmission member. The armature is connected to the transmission member. The transmission member is mounted on the base. The transmission member can swing or move relative to the base. The transmission member includes a push rod and a retraction hook arranged corresponding to the movable spring assembly. When the electromagnetic system is energized in the forward direction, the armature is driven to move and thereby push the transmission member. The push rod pushes the movable spring assembly to close the normally open contact. When the electromagnetic system is energized in the reverse direction, the armature is driven to move in the reverse direction. The elastic member recovers its deformation and together pulls the transmission member back. The retraction hook pulls the movable spring assembly to close the normally closed contact. The electromagnetic relay of the present invention realizes bidirectional transmission through the mutual cooperation between the transmission member, the elastic member, and the yoke, and the cooperation between the push rod and the retraction hook of the transmission member and the movable spring assembly, thereby improving the reliability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and in particular to an electromagnetic relay. Background Art

[0002] In order to facilitate the confirmation of the mechanical status of the relay contact action, existing electromagnetic relays have added a transmission indication function. The contact action status is fed back through the structural parts and can be directly identified through the observation window on the top surface of the product. This is very helpful for customers to understand the overall working status of the system in a timely manner during maintenance or testing, reducing the probability of system errors.

[0003] Currently, most transmission indicator mechanisms on the market are assembled structures. The action indicator mechanism is connected to the transmission mechanism using the principle of leverage. After the product coil is excited, the displacement of the transmission mechanism increases the displacement of one end of the action indicator mechanism, so that the position information of the contact connected to the transmission mechanism can be identified through the observation window on the top surface of the product. However, this solution has several disadvantages: 1. The transmission mechanism is a one-way transmission, which can only push the dynamic spring assembly to close the normally open contact. The normally closed contact can only generate pressure through the elasticity of the dynamic spring itself, which will result in a relatively small normally closed pressure and insufficient working reliability; 2. It requires an additional structural component - -Action indicator plate, which will undoubtedly increase the overall cost of the product and increase the complexity of assembly; 3. The action indicator plate and the transmission mechanism are mostly connected by a hinge, and the transmission mechanism and the armature are connected by a lap joint, which has low reliability - for example, if it is too tight, there will be jamming, if it is too loose, it will easily fall out, the indication will be inaccurate, and there will be risks of powder due to long-term friction; 4. Some other manufacturers combine the transmission mechanism and the action indicator plate into one, and design it as an integral part, but there will also be a problem: since the action indicator mechanism is linear, its working stroke is short, resulting in poor display effect, affecting the customer's effective identification. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an electromagnetic relay that realizes bidirectional transmission and has high reliability.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An electromagnetic relay includes an electromagnetic system, a base assembly, and a transmission member. The base assembly includes a base, a movable reed assembly, and a stationary reed assembly. The movable reed assembly and the stationary reed assembly have normally closed contacts and normally open contacts correspondingly arranged. The electromagnetic system includes a yoke, an armature, and an elastic member. The elastic member is connected between the yoke and the transmission member. The armature is connected to the transmission member. The transmission member is mounted on the base and can swing or move relative to the base. The transmission member includes a push rod and a retraction hook correspondingly arranged in the movable reed assembly.

[0007] When the electromagnetic system of the electromagnetic relay is energized in the forward direction, the armature is driven to move and then push the transmission part, the elastic part undergoes elastic deformation, and at the same time, the push rod of the transmission part pushes the moving reed assembly to close the normally open contact / open the normally closed contact; when the electromagnetic system of the electromagnetic relay is energized in the reverse direction, the armature is driven to move in the reverse direction, the elastic part recovers its deformation, and the armature and elastic part work together to pull the transmission part back, and then the return hook of the transmission part pulls the moving reed assembly to open the normally open contact / close the normally closed contact.

[0008] Preferably, an action indicator piece is integrally provided on the transmission member.

[0009] Preferably, one end of the transmission member is provided with an action indicator piece, and the other end is provided with a rotating shaft. The base is provided with a rotating shaft socket for installing the rotating shaft, and the transmission member is swingably mounted on the base with the rotating shaft as a fulcrum.

[0010] Preferably, the transmission member is provided with a connecting block and a fixed block connected in sequence on the side facing the electromagnetic system, the fixed block is provided with an armature slot, the elastic member is provided with a card interface cooperating with the connecting block, the elastic member is connected to the connecting block of the transmission member through the card interface thereon, and the end of the armature is connected to the armature slot.

[0011] Preferably, the dynamic spring assembly includes a dynamic spring and two dynamic contacts, one end of the dynamic spring is fixed on the base, and the other end is provided with two dynamic contacts located on both sides, and the middle part of the dynamic spring is provided with a first avoidance opening; the static spring assembly includes a first static spring and a second static spring, the first static spring and the second static spring are fixedly installed on the base and located on both sides of the dynamic spring, wherein the first static spring is close to the transmission member, the first static spring is provided with a normally closed contact corresponding to a dynamic contact, and the second static spring is provided with a normally open contact corresponding to the other dynamic contact; the retraction hook is connected to the end of the push rod, the push rod passes through the first static spring and can be blocked by the dynamic spring, the retraction hook passes through the first static spring and the first avoidance opening in sequence, and the retraction hook has a hook portion that can hook the dynamic spring.

[0012] Preferably, the transmission part is an integrally formed structure and also includes a sheet-like H-shaped body, the top ends of the two vertical arms of the H-shaped body extend toward the electromagnetic system to form two action indicator plates, and the bottom ends of the two vertical arms of the H-shaped body are provided with a rotating shaft, which cooperates with the rotating shaft bayonet of the base, and the H-shaped body is swingably mounted on the base through the rotating shaft; one side surface of the horizontal arm of the H-shaped body is provided with a connected clamping block and a fixed block connected in sequence, and the fixed block is provided with an armature clamping groove for clamping the armature, and the other side surface of the horizontal arm of the H-shaped body is provided with a push rod and a retraction hook connected in sequence, and the retraction hook has a hook portion for hooking the movable spring of the movable spring assembly.

[0013] Preferably, longitudinal reinforcing ribs are provided on both vertical arms of the H-shaped body.

[0014] Preferably, the elastic part includes a reaction spring piece, a U-shaped connecting piece and two U-shaped fixing pieces. The bottom end of the reaction spring piece is provided with a card interface for connecting to the transmission part. The bottom end of the middle section of the U-shaped connecting piece is connected to the top of the reaction spring piece. The two arm ends of the U-shaped connecting piece are respectively vertically connected to one arm end of the two U-shaped fixing pieces. The two U-shaped fixing pieces are symmetrically arranged with their openings facing each other. The openings of the two U-shaped fixing pieces are used to clamp the two side edges of the yoke.

[0015] Preferably, the bottom ends of the middle sections of the two U-shaped fixing plates are each provided with a lower limit plate, the lower limit plate is a circular arc plate, and the two lower limit plates are symmetrically arranged with the convex parts facing each other and the concave parts facing back to back, and the two lower limit plates cooperate to clamp the yoke; the top end of the middle section of the U-shaped connecting plate is provided with a pressing plate for limiting the armature; the top ends of the middle sections of the two U-shaped fixing plates are each provided with an upper limit plate, and the two upper limit plates are symmetrically arranged, and the upper limit plates include a stop part for positioning the yoke, a clamping part for limiting the armature, and a pressing part, the clamping part is arranged vertically, and the stop part is arranged horizontally, vertically connected between the top end of the U-shaped fixing plate and the bottom end of the clamping part, the pressing part is connected to the top end of the clamping part, and the pressing parts of the two upper limit plates are symmetrically arranged with the convex parts facing each other and the concave parts facing back to back.

[0016] Preferably, the electromagnetic system also includes a coil frame, a coil, an iron core, a short-circuit ring and a magnet, the coil frame includes a bottom mounting block at the bottom, a mounting column in the middle and a top mounting block at the top, the coil frame is provided with an axial mounting hole, the axial mounting hole passes through the top mounting block and the mounting column and extends to the second chamber connected to the bottom mounting block, the iron core is installed in the axial mounting hole, the magnet is inserted in the second chamber of the bottom mounting block and connected to the bottom end of the iron core; the first section of one end of the yoke is inserted in the second chamber of the bottom mounting block and fits with the magnet, and the second section of the other end of the yoke is connected to the elastic member; the short-circuit ring is assembled on the top end of the iron core and falls on the top mounting block; the third section of one end of the armature is swingably mounted on the top mounting block above the short-circuit ring, and the fourth section of the other end of the armature is connected to the transmission member.

[0017] The electromagnetic relay of the present invention realizes bidirectional transmission through the cooperation between the transmission member, the elastic member and the yoke, and the push rod and the retraction hook of the transmission member cooperate with the movable spring assembly. The transmission member can not only push the movable spring assembly to close the normally open contact, but also pull the movable spring assembly to close the normally closed contact, effectively solving the problem that the conventional method can only generate pressure through the elasticity of the movable spring itself, resulting in relatively small normally closed pressure and insufficient working reliability, thereby improving the reliability of the product. The transmission member and the action indicator plate are integrated, eliminating the hinge connection between the action indicator and the transmission member, reducing parts and reducing assembly complexity. The transmission member and the armature are connected by a slot to avoid transmission jamming, disengagement and other phenomena, thereby improving reliability. The action indication is changed from traditional linear motion to swinging, which increases the working stroke and is conducive to effective identification by customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the three-dimensional structure of the electromagnetic relay of the present invention;

[0019] Figure 2 is a perspective view of the base assembly of the present invention;

[0020] Figure 3 is a front view of the base assembly of the present invention;

[0021] Figure 4 is a three-dimensional diagram of the elastic member of the present invention;

[0022] Figure 5 is a front view of the elastic member of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the first embodiment of the insert of the present invention;

[0024] Figure 7 This is a structural diagram of the second embodiment of the insert of the present invention;

[0025] Figure 8 is a perspective view of the electromagnetic system of the present invention;

[0026] Figure 9 is a half-section diagram of the electromagnetic system of the present invention;

[0027] Figure 10 It is a three-dimensional diagram of the coil former of the present invention;

[0028] Figure 11 This is an assembly diagram of the electromagnetic system of the present invention and the insert of Example 1;

[0029] Figure 12 This is an assembly diagram of the electromagnetic system of the present invention and the plug-in element of Example 2;

[0030] Figure 13 is a perspective view of the cover of the present invention;

[0031] Figure 14 It is a half-section view of the cover of the present invention;

[0032] Figure 15 It is a three-dimensional diagram of the gusset plate of the present invention;

[0033] Figure 16 is a perspective view of a test switch of the present invention;

[0034] Figure 17 is a side view of the test switch of the present invention;

[0035] Figure 18 is a bottom view of the test switch of the present invention;

[0036] Figure 19 is a cross-sectional view of the electromagnetic relay in the unlocked state of the present invention;

[0037] Figure 20 is a three-dimensional diagram of the electromagnetic relay in the unlocked state of the present invention;

[0038] Figure 21 is a cross-sectional view of the electromagnetic relay in a test state of the present invention;

[0039] Figure 22 is a three-dimensional diagram of the electromagnetic relay in the test state of the present invention;

[0040] Figure 23 is a cross-sectional view of the electromagnetic relay in a locked state of the present invention;

[0041] Figure 24 is a perspective view of the electromagnetic relay in a locked state of the present invention;

[0042] Figure 25 is a perspective view of the transmission member of the present invention;

[0043] Figure 26 is a side view of the transmission member of the present invention;

[0044] Figure 27 It is a half-section diagram of the electromagnetic relay in the forward energized state of the present invention;

[0045] Figure 28 It is a half-section view of the electromagnetic relay in the reverse power-on state of the present invention. DETAILED DESCRIPTION

[0046] The following is combined with Figures 1 to 28 The following embodiments are provided to further illustrate the specific implementation of the electromagnetic relay of the present invention. The electromagnetic relay of the present invention is not limited to the description of the following embodiments.

[0047] like Figure 1As shown, the electromagnetic relay of the present invention comprises a base assembly 1, a transmission member 2, an electromagnetic system 3 and a cover assembly 4. Figure 2 and Figure 3 As shown, the base assembly 1 of the present invention includes a base 11, a dynamic spring assembly 12, a static spring assembly 13 and a lead-out terminal 14 mounted on the base 11. A mounting cavity 111 for mounting the electromagnetic system 3 is provided on the top surface of one end of the base 11, and the lead-out terminal 14 is connected to the bottom surface. The dynamic spring assembly 12 and the static spring assembly 13 are mounted on the other end of the base 11. A rotating shaft bayonet 112 for swinging the transmission member 2 is provided in the middle of the base 11. Figure 1 As shown, the electromagnetic system 3, base assembly 1, and transmission member 2 are installed within the housing assembly 4. The electromagnetic system 3 is installed within the mounting cavity 111 of the base 11, and the transmission member 2 is swingably mounted on the base 11 between the static spring assembly 13 and the electromagnetic system 3. The base assembly 1, equipped with the electromagnetic system 3 and transmission member 2, is installed in the housing assembly 4. After vacuuming and filling with nitrogen, glue is applied to the bottom glue groove of the base 11 to seal it.

[0048] like Figure 2 and Figure 3 As shown, the movable spring assembly 12 includes a movable spring 121 and two movable contacts 122. One end of the movable spring 121 is fixed to the base 11, and two symmetrical movable contacts 122 are located on either side of the other end. A first clearance opening 1210 is provided in the middle of the movable spring 121 to clear the transmission member 2. The stationary spring assembly 13 includes a first stationary spring 130, a second stationary spring 131, a normally closed contact 132, and a normally open contact 133. The first and second stationary springs 130, 131 are fixed to the base 11, located on either side of the movable spring 121, with the first stationary spring 130 positioned closest to the transmission member 2. A second clearance opening 1300 is provided in the middle of the first stationary spring 130 to clear the transmission member 2, corresponding to the first clearance opening 1210. The first static reed piece 130 is provided with a normally closed contact 132 corresponding to one movable contact 122 , and the second static reed piece 131 is provided with a normally open contact 133 corresponding to the other movable contact 122 .

[0049] like Figure 8 and Figure 9 As shown, the electromagnetic system 3 of the present invention includes a coil frame 30, an insert 31, a coil 310, an elastic member 32, an iron core 33, a short-circuit ring 34, a yoke 35, an armature 36, a magnet 37, two connecting columns 38 and an indicator light module 39.

[0050] like Figure 4 and Figure 5As shown, the elastic member 32 of the present invention is an integrally formed structure made of elastic metal and includes a reaction spring 321, a U-shaped connecting piece 322, two U-shaped fixing pieces 323, multiple pressing pieces 324, two upper limit pieces 325, and two lower limit pieces 326. The bottom end of the reaction spring 321 is provided with a snap-in interface 3210 for connecting with the transmission member 2. The reaction spring 321 engages with the transmission member 2 to provide a reaction force. The bottom end of the middle section of the U-shaped connecting piece 322 is connected to the top end of the reaction spring 321. The top end of the middle section of the U-shaped connecting piece 322 is provided with a pressing piece 324 for limiting the position of the armature 36. The pressing piece 324 is an L-shaped sheet structure with its opening facing away from the armature 36 and arranged at an angle. The number of pressing pieces 324 is preferably greater than or equal to two. Multiple pressing pieces 324 are evenly arranged on the top end of the middle section of the U-shaped connecting piece 322. After the armature 36 is installed, they elastically press the bend of the armature 36 to limit its position. The two ends of the U-shaped connecting piece 322 are perpendicularly connected to the ends of one arm of the U-shaped fixing piece 323. The two U-shaped fixing pieces 323 are symmetrically arranged with their openings facing each other. The openings of the two U-shaped fixing pieces 323 are used to clamp the two sides of the yoke 35. The top of the middle section of each U-shaped fixing piece 323 is equipped with an upper limit piece 325, and the bottom end is equipped with a lower limit piece 326. The lower limit piece 326 is a circular arc piece, and the two lower limit pieces 326 are symmetrically arranged with the protrusions facing each other and the recesses facing away. The lower limit pieces 326 of the two U-shaped fixing pieces 323 cooperate to clamp the yoke 35. The two upper limit plates 325 are symmetrically arranged. The upper limit plate 325 is an integrally formed structure, including a stop portion 3251, a clamping portion 3252 and a pressing portion 3253 connected in sequence. The clamping portion 3252 is vertically arranged, and the clamping portions 3252 of the two upper limit plates 325 cooperate to clamp the armature 36; the stop portion 3251 is horizontally arranged, and the stop portion 3251 is vertically connected between the top end of the U-shaped fixing plate 323 and the bottom end of the clamping portion 3252, and is used to position the yoke 35; the pressing portion 3253 is connected to the top end of the clamping portion 3252, and the pressing portions 3253 of the two upper limit plates 325 are symmetrically arranged with the convex portions facing each other and the concave portions back to back, and are used to press the armature 36 to form a limit on the armature 36. In the electromagnetic relay of the present invention, the reaction spring of the elastic part is connected to the transmission part to provide a reaction force for the transmission part, the U-shaped fixing piece is used to clamp and fix the yoke, and the U-shaped connecting piece integrates the reaction spring and the U-shaped fixing piece. The elastic part has a simple structure and can provide a stable and reliable reaction force for the transmission part. It can also be directly plugged into the yoke for positioning, which makes assembly easier and positioning more accurate without deviation, thereby improving the reliability of the product. The two lower limit plates of the elastic part are provided to further limit and fix the yoke, thereby improving the stability and reliability of the elastic part in positioning and fixing the yoke. The elastic part has an elastic pressing plate and an upper limit plate for limiting the armature. Except for the rotational direction, the armature can be positioned at one time without riveting or welding, and the positioning is better.

[0051] like Figure 6 and Figure 7As shown, the plug 31 of the present invention includes a plug body 311, and a clip 312, a wiring piece 313, a fixing protrusion 314 and a bending piece 315 arranged on the plug body 311. The plug body 311 is T-shaped, and the vertical arm part protruding from one end of the horizontal arm of the T-shaped plug body 311 is the wiring piece 313. A fixing protrusion 314 is provided on the side wall of the other end of the horizontal arm of the plug body 311. The fixing protrusion 314 is a wedge-shaped sheet structure; the vertical arm of the plug body 311 is connected to one end of the clip 312, and the other end of the clip 312 is tilted and protrudes from the plug body 311; one end of the bending piece 315 is connected to the bottom end of the vertical arm of the plug body 311, and the other end of the bending piece 315 is tilted, and the tilting direction is opposite to the tilting direction of the clip 312. As shown Figure 6 As shown in the first embodiment of the insert 31 of the present invention, the vertical arm of the insert body 311 is provided with a movable hole 316 for the clip 312 to move. The movable hole 316 is a square through hole. One end of the clip 312 is connected to the bottom wall of the movable hole 316 of the insert body 311, and the other end of the clip 312 can swing in the movable hole 316. Figure 7 As shown, in the second embodiment of the insert 31 of the present invention, the clip 312 is connected to the vertical arm of the insert body 311 through a J-shaped connecting piece 317. One end of the J-shaped connecting piece 317 is flush with the side of the vertical arm of the insert body 311, and the other end of the J-shaped connecting piece 317 is parallel to and spaced from the vertical arm of the insert body 311, and its bottom edge is connected to the clip 312. In this embodiment, the bending piece 315 and the clip 312 are symmetrically arranged in a manner that the root spacing is smaller than the end spacing.

[0052] like Figure 10 As shown, the coil frame 30 of the present invention includes a bottom mounting block 301, a middle mounting post 302, and a top mounting block 303. The insert 31 is inserted into the first cavity 306 of the bottom mounting block 301 and cooperates with the side wall of the first cavity 306 to form a quick-connect socket. The enameled wire is wound around the mounting post 302 to form a coil 310, and the first and second ends of the coil 310 are connected to the insert 31. Figure 11 and Figure 12As shown, the bottom mounting block 301 of the coil frame 30 is provided with a first chamber 306 for mounting the insert 31. One side wall of the first chamber 306 is a fixed side wall 307, and the other side wall is a clamping side wall 308. The fixed side wall 307 of the first chamber 306 is provided with a limiting inclined surface 309 that cooperates with the bending piece 315. The insert 31 is inserted into the first chamber 306, and the insert 31 is in contact with the fixed side wall 307 of the first chamber 306. The bending piece 315 of the insert 31 is 5 cooperates with the limiting inclined surface 309 to form a limit for the insert 31. The presence of the fixing protrusion 314 of the insert 31 allows the insert 31 to be fixed to the first cavity 306 by an interference fit. A socket for connecting to the lead-out terminal 14 of the base assembly 1 is provided between the clip 312 of the insert 31 and the clamping side wall 308, realizing a quick plug-in connection mode. It can be directly and quickly plugged into lead-out terminals of different shapes, which is conducive to standardized and automated production, simple processing technology and low cost. The bottom mounting block 301 of the coil frame 30 has two first chambers 306, and the two first chambers 306 are symmetrically arranged. Correspondingly, the number of plug-ins 31 and lead-out terminals 14 is two. A plug-in 31 is installed in each first chamber 306, and the two plug-ins 31 are connected to the two lead-out terminals 14 one-to-one. One end of the lead-out terminal 14 is outside the electromagnetic relay for connecting to an external power supply, and the other end of the lead-out terminal 14 extends into the mounting cavity 111 and can be plugged into the socket of the plug-in 31.

[0053] like Figure 8-10As shown, the coil frame 30 is provided with an axial mounting hole 304, which passes through the top mounting block 303 and the mounting column 302 and extends to the second chamber connected to the bottom mounting block 301. The iron core 33 is installed in the axial mounting hole 304. The magnet 37 is inserted into the second chamber of the bottom mounting block 301 and connected to the bottom end of the iron core 33. The yoke 35 is L-shaped and includes a first section 351 and a second section 352. The first section 351 of the yoke 35 is inserted into the second chamber of the bottom mounting block 301 and abuts against the bottom surface of the magnet 37. The second section 352 of the yoke 35 is connected to the elastic member 32. The electromagnetic relay is designed as a magnetic latching relay. The two poles of the magnet 37 polarize the iron core 33 and the yoke 35 respectively, and the polarity change of the excitation of the coil 310 forms a magnetic latching structure. A magnet is installed within the magnetic circuit of the electromagnetic system, maintaining the attracted state without the need for continuous excitation. The two poles of the magnet polarize the core and yoke, respectively, and a magnetic retention structure is formed by the change in the polarity of the coil excitation. The electromagnetic system is maintained in a non-excited state by reversing the polarity of the magnet and the coil, which is energy-saving and environmentally friendly. The short-circuit ring 34 is assembled on the top of the core 33 and rests on the top mounting block 303. The armature 36 is L-shaped and includes a third section 361 and a fourth section 362. The third section 361 of the armature 36 is swingably mounted on the top mounting block 303, located above the short-circuit ring 34 and restrained by the elastic member 32 to abut the yoke blade on the second section 352 of the yoke 35. The fourth section 362 of the armature 36 passes through the elastic member 32 and is connected to the transmission member 2. The fourth section 362 is located between the U-shaped connecting piece 322 of the elastic member 32 and the second section 352 of the yoke 35. During installation, the second section 352 of the yoke 35 is inserted into the elastic member 32 and then clamped on the yoke 35 by the U-shaped fixing piece 323, and is fixed by the lower limit piece 326 of the U-shaped fixing piece 323 and positioned by the stop portion 3251 of the upper limit piece 325 of the U-shaped fixing piece 323; the armature 36 is pressed under the pressing piece 324 provided on the elastic member 32, and the armature 36 is limited to the yoke blade by the pressing piece 324, and the lateral movement of the armature 36 on the yoke 35 is limited by the upper limit piece 325 provided on the elastic member 32, and is clamped and fixed by the clamping portions 3252 of the two upper limit pieces 325 and pressed and positioned by the pressing portions 3253 of the two upper limit pieces 325.

[0054] like Figure 8-10As shown, the top mounting block 303 of the coil bobbin 30 is provided with two mounting bosses 305 at opposite corners. Two connecting posts 38 are mounted on the two mounting bosses 305 in a one-to-one correspondence. The connecting posts 38 are inserted into the through-holes of the mounting bosses 305. An indicator light module 39 is placed on the two mounting bosses 305 and welded to the two connecting posts 38. A semi-enclosed space is formed between the indicator light module 39 and the top mounting block 303, allowing the armature 36 to swing up and down. The indicator light module 39 consists of a circuit board and components such as light-emitting diodes and resistors soldered to the circuit board. It should be noted that the indicator light module 39 can illuminate when powered, which is a conventional technology. When the product is of AC specification, after the enameled wire is wound, the head and tail ends of the coil 310 are connected to the terminal 313 of the plug 31, and a secondary winding is wound on the outside of the coil 310. The head and tail ends of the secondary winding of the coil 310 are connected to the connecting post 38, so that the indicator light module 39 draws power from the coil 310 through the two connecting posts 38 and the secondary winding of the coil 310. When the product is of DC specification, after the coil 310 is wound, the head and tail ends are connected to the plug 31, and the connecting post 38 is extended to connect to the plug 31, so that the indicator light module 39 draws power from the coil 310 through the two connecting posts 38 and the two plugs 31. The indicator light module is directly installed in the cover and directly connected via the coil connecting posts provided on the electromagnetic system coil frame. Ensuring the integrity of the cover allows the product to be designed as an airtight product, simplifies product assembly, and improves production efficiency.

[0055] like Figure 8 and Figure 9 As shown, the working principle of the electromagnetic system 3 of the present invention is as follows: the electromagnetic system 3 forms a pathway through the lead-out terminal 14 and the insert 31. When power is applied to the electromagnetic system 3 in the forward direction, the core 33 in the middle of the coil bobbin 30 becomes magnetized and polarized, generating an electromagnetic attraction force on the armature 36, which has been polarized by the magnet 37. This forces the third section 361 of the armature 36 to close toward the core 33 and hold it there. The fourth section 362 of the armature 36 then pushes the transmission element 2. When power is applied to the electromagnetic system 3 in the reverse direction, the core 33 becomes polarized in the opposite direction. This generates an electromagnetic thrust force on the armature 36, which has been polarized by the magnet 37. This forces the third section 361 of the armature 36 to separate and hold it there. The fourth section 362 of the armature 36 then pulls the transmission element 2 back. The core assembly, formed by the short-circuit ring 34 and the core 33, acts as a magnetic separator for the alternating current, ensuring that the electromagnetic attraction force on the end face of the core 33 remains non-zero when the AC current passes through zero. The connecting post 38 takes power from the first and second ends of the coil 310 and serves to monitor the power-on status of the electromagnetic system 3 by illuminating the indicator light module 39. Figure 1 As shown, the housing assembly 4 of the present invention includes a pinch plate 43, a housing 41 and a test switch 42. Figure 13As shown, the cover 41 is transparent and is provided with a mounting groove 411 for mounting a pinch plate 43 and a recessed groove 412 for mounting a test switch 42. The mounting groove 411 connects the recessed groove 412 with the outside of the cover 41, and the recessed groove 412 connects the mounting groove 411 with the inside of the cover 41. A fixing ear 431 is provided on the side of the pinch plate 43, and a fixing groove 413 is provided on the side wall of the mounting groove 411 to cooperate with the fixing ear 431. Figure 15 As shown, the gusset plate 43 is provided with an operation port 432, a test port 433, an indicator light window 434 and an action indication window 435. The gusset plate 43 is a rectangular plate. The operation port 432, the test port 433 and the indicator light window 434 are arranged in the middle position of the gusset plate 43 along the long side direction of the gusset plate 43. There are two action indication windows 435, and the two action indication windows 435 are symmetrically arranged on both sides of the operation port 432.

[0056] like Figure 13 and Figure 14 As shown, the recessed groove 412 of the cover shell 41 is a convex groove, and the wide side portion of the recessed groove 412 is fitted with supporting bosses 414 for supporting the test switch 42, and the side walls on both sides of the wide side portion of the recessed groove 412 are provided with buckling platforms 415 and gear protrusions 416 located above the supporting bosses 414 in sequence, and the buckling platforms 415 are spaced apart from the supporting bosses 414; the first locking portion 417 and the second locking catch 418 are provided in sequence between the side walls on both sides of the narrow side portion of the recessed groove 412, and the second locking catch 418 is arranged in fits with the tail end side wall of the narrow side portion of the recessed groove 412, and the end of the second locking catch 418 has a pressing inclined surface 419 that cooperates with the pressure inclined surface 4215.

[0057] like Figure 16-24 As shown, the test switch 42 is installed in the sink 412 and has an unlocking position, a testing position, and a locking position when it slides along the sink 412. The test switch 42 is provided with a first locking portion 4211 that cooperates with the first locking portion 417 in the sink 412, and a trigger portion 4210 that cooperates with the armature 36. When the test switch 42 slides to the unlocking position, the first locking portion 4211 of the test switch 42 is locked with the first locking portion 417, so that the trigger portion 4210 of the test switch 42 cannot contact the armature 36. When the test switch 42 slides to the testing position or the locking position, the first locking portion 417 and the first locking portion 4211 are released. The electromagnetic relay of the present invention has an anti-accidental touch function. When the test switch 42 is in the unlocked state, the first locking portion 4211 of the test switch 42 is engaged with the first locking portion 417 of the cover 41, preventing the test switch 42 from pressing down the armature 36 and causing malfunction, effectively avoiding unnecessary functional abnormalities caused by erroneous operation and improving product reliability.

[0058] like Figure 16-18As shown, the test switch 42 of the present invention includes a slider 4201 and an elastic sheet 4209. The slider 4201 slides with the side wall of the sink 412. The slider 4201 is provided with a push boss 4208 located at the top. The top surface of the push boss 4208 is provided with anti-slip stripes to prevent slipping and facilitate manual operation of the push boss 4208. The push boss 4208 of the test switch 42 is located within the operating opening 432 of the pinch plate 43. The side wall of the slider 4201 is provided with a sliding protrusion 4202 and a gear elastic sheet 4203. The support protrusion 414 supports the slider 4201. The sliding protrusion 4202 of the slider 4201 is inserted between the support protrusion 414 and the pinch plate 415 and can slide along the pinch plate 415 to achieve sliding engagement between the slider 4201 and the side wall of the sink 412. The ends of the shift spring 4203 are connected to the side walls of the slider 4201. The central outer surface of the shift spring 4203 is sequentially provided with an unlocking groove 4204, a testing groove 4205, and a locking groove 4206. The shift protrusion 416 within the recess 412 cooperates with the unlocking groove 4204, the testing groove 4205, and the locking groove 4206 to form the unlocking, testing, and locking positions. The central inner surface of the shift spring 4203 is wavy, with protrusions corresponding to the unlocking groove 4204, the testing groove 4205, and the locking groove 4206. A movable gap 4207 is defined between the shift spring 4203 and the side wall of the slider 4201. The unlocking position, test position and locking position formed by the elastic groove of the test switch 42 and the immovable protrusion of the cover shell 41 have a simple structure and will not cause great resistance to the sliding of the test switch 42. Manually pushing the test switch 42 is simple and labor-saving, and the gear formed is stable.

[0059] like Figure 16-18 As shown, one end of an elastic sheet 4209 is connected to the bottom surface of the slider 4201, and the other end of the elastic sheet 4209 is a movable end. The movable end is provided with a trigger portion 4210, a second locking portion 4212, and a test platform 4213. The second locking portion 4212 and one end of the trigger portion 4210 are connected, with an adjustable gap 4214 between the other ends, forming a horizontal U-shaped structure. The test platform 4213 is an inverted L-shaped structure. The bottom end of the test platform 4213 is connected to the end of the U-shaped structure. The top of the test platform 4213 extends leftward to form a first locking portion 4211 that is flush with the right portion of the top. The test platform 4213 and the first locking portion 4211 form a T-shaped structure. The test platform 4213 is provided with a test groove 4205. When the test switch 42 is slid to the test position, the test groove 4205 is directly opposite the test port 433.

[0060] like Figure 16-18As shown, the second locking portion 4212 of the elastic sheet 4209 has a pressure-bearing inclined surface 4215, which cooperates with the pressing inclined surface 419 in the recess 412. When the test switch 42 slides to the locked position, the pressing inclined surface 419 squeezes the pressure-bearing inclined surface 4215 of the elastic sheet 4209, causing the movable end of the elastic sheet 4209 to move downward. The trigger portion 4210 on the movable end then moves downward until it contacts the armature 36, at which point the second locking portion 4212 and the second lock catch 418 are locked. An adjustment gap 4214 is defined between the second locking portion 4212 and the trigger portion 4210. The presence of the adjustment gap 4214 allows the elastic deformation of the elastic sheet 4209 to reduce the interference fit between the test switch 42 and the armature 36.

[0061] like Figure 19-20 As shown, when the test switch 42 is in the unlocked state, that is, when the gear protrusion 416 is stuck in the unlocking groove 4204, the first locking portion 4211 of the test switch 42 is engaged with the first locking portion 417 of the cover 41, thereby locking the test switch 42. At this time, the trigger portion 4210 of the test switch 42 cannot press down the armature 36 and interfere with the armature 36. The product can move freely through the power-on excitation of the electromagnetic system 3, preventing the test switch 42 from malfunctioning and causing malfunction of the product. Figure 21-22 As shown, when the test switch 42 slides to the test state, that is, when the gear protrusion 416 is stuck in the test groove 4205, the first locking portion 4211 of the test switch 42 is separated from the first locking portion 417 of the cover 41. At this time, the touch portion 4210 is in critical contact with the armature 36. In addition, at this time, a jog test can be performed through the test port 433 provided on the buckle plate 43, that is, the test groove 4205 is operated with a tool to press the test platform 4213, and the touch portion 4210 moves downward to contact the armature 36, driving the transmission member 2 to drive the dynamic reed assembly 12 to operate, thereby switching the contact state. After the test is completed and the pressing force on the test platform 4213 is removed, the touch portion 4210 returns to the critical contact state with the armature 36. Figure 23-24As shown, when the test switch 42 further slides to the locked state, the pressure-receiving inclined surface 4215 of the elastic piece 4209 of the test switch 42 slides along the pressing inclined surface 419 of the cover 41, pressing the elastic piece 4209 downward. The trigger portion 4210 of the elastic piece 4209 presses the armature 36, causing the armature 36 to move, and further driving the transmission member 2 to drive the dynamic spring assembly 12. Finally, the second locking portion 4212 is locked below the second lock catch 418 of the cover 41. At this time, the trigger portion 4210 cannot move upward and reset, and continues to press the armature 36, thereby locking the contact state. At this time, the gear protrusion 416 remains stuck in the locking groove 4206. Through the above structural design, the test switch only needs a single structural component to cooperate with the cover to achieve all the functions of unlocking, testing, and locking. The three switch states do not interfere with each other, effectively preventing the occurrence of false operations, and the assembly is simple and cost-effective.

[0062] like Figures 25-28 As shown, the elastic member 32 is connected between the yoke 35 and the transmission member 2, and the armature 36 is connected to the transmission member 2, which can drive the transmission member 2 and then drive the dynamic spring assembly 12 of the base assembly 1. The transmission member 2 is installed on the base 11 and can swing or move relative to the base 11. The transmission member 2 includes a push rod 202 and a retraction hook 203 corresponding to the dynamic spring assembly 12. Figure 27 As shown, when the electromagnetic system 3 of the electromagnetic relay is energized in the forward direction, the electromagnetic system 3 drives the armature 36 to move and push the transmission member 2, causing the elastic member 32 to elastically deform. At the same time, the push rod 202 of the transmission member 2 pushes the movable reed assembly 12 to close the normally open contact 133 of the static reed assembly 13 / open the normally closed contact 132. When the electromagnetic relay is de-energized and non-excited, the movable reed assembly 12 keeps closing the normally open contact 133 of the static reed assembly 13 / opening the normally closed contact 132. Figure 28 As shown, when the electromagnetic system 3 of the electromagnetic relay is reversely energized, the armature 36 is driven to move in the reverse direction, and the elastic member 32 recovers its deformation. The transmission member 2 is pulled back under the combined action of the return force of the armature 36 and the deformation force of the elastic member 32, and then the return hook 203 of the transmission member 2 pulls the movable reed assembly 12 to open the normally open contact 133 of the static reed assembly 13 / close the normally closed contact 132. When the electromagnetic relay is de-energized and non-excited, the movable reed assembly 12 is kept to open the normally open contact 133 of the static reed assembly 13 / close the normally closed contact 132. The transmission structure of the electromagnetic relay of the present invention realizes bidirectional transmission through the mutual cooperation between the transmission member 2, the elastic member 32 and the yoke 35, and the cooperation between the push rod 202 and the retraction hook 203 of the transmission member 2 and the movable spring assembly 12. The transmission member 2 can not only push the movable spring assembly 12 to close the normally open contact 133, but also pull the movable spring assembly 12 to close the normally closed contact 132. This effectively solves the problem of the conventional method of generating pressure only by the elasticity of the movable spring 121 itself, resulting in a relatively small normally closed pressure and insufficient working reliability, thereby improving the reliability of the product.

[0063] like Figure 25 As shown, one end of the transmission member 2 is integrally provided with an action indicator piece 205, which is arranged correspondingly to the action indicator window 435 on the buckle plate 43. The other end of the transmission member 2 is integrally provided with a rotating shaft 206, which cooperates with the rotating shaft bayonet 112 of the base 11. The rotating shaft 206 of the transmission member 2 is installed in the rotating shaft bayonet 112 to realize that the transmission member 2 is swingably mounted on the base 11 with the rotating shaft 206 as the fulcrum. Figure 27 As shown, the electromagnetic relay is in the forward energized state, the action indicator sheet 205 is opposite to the action indicator window 435, and the action indicator sheet 205 can be seen through the action indicator window 435 from outside the cover 41. Figure 28 As shown, when the electromagnetic relay is in the reverse energized state, the action indicator plate 205 is misaligned with the action indicator window 435, making it invisible from outside the housing 41 through the action indicator window 435. The transmission member 2 is integrated with the action indicator plate 205, eliminating the hinged connection between the action indicator and the transmission member, reducing parts and assembly complexity. The action indicator is changed from traditional translational motion to oscillation, increasing the operating range and facilitating effective customer identification.

[0064] like Figures 25-26As shown, in a specific embodiment, the transmission member 2 of the present invention is an integrally formed structure, comprising a sheet-like H-shaped body 201, a push rod 202, a retraction hook 203, a fixing block 204, an action indicator plate 205, and a rotating shaft 206. The push rod 202 is a rectangular strip. The width of the first clearance opening 1210 of the movable spring plate 121 is less than the width of the push rod 202, which is less than the width of the second clearance opening 1300 of the first static spring plate 130. The top ends of the two vertical arms of the H-shaped body 201 extend toward the electromagnetic system 3 to form two action indicator plates 205. The bottom ends of the two vertical arms of the H-shaped body 201 are each provided with a rotating shaft 206, which engages with the rotating shaft retaining hole 112 of the base 11. The H-shaped body 201 is swingably mounted on the base 11 via the rotating shaft 206, located between the static spring plate assembly 13 and the electromagnetic system 3. The two vertical arms of the H-shaped body 201 are each provided with longitudinal reinforcing ribs 209 to enhance the robustness of the transmission structure. On one side of the cross arm of the H-shaped body 201, specifically the side facing the electromagnetic system 3, a connecting block 207 and a fixing block 204 are sequentially connected. On the other side of the cross arm of the H-shaped body 201, a push rod 202 and a retraction hook 203 are sequentially connected. The connecting block 207 engages with the locking interface 3210 of the elastic member 32 to engage the elastic member 32. The fixing block 204 is provided with an armature retaining groove 208 for engaging the armature 36. The retraction hook 203 is a horizontally placed T-shaped structure. The narrow end of the retraction hook 203 is connected to the end of the push rod 202. The wide end of the T-shaped retraction hook 203 has two protruding hook portions 2030. The height of the first relief opening 1210 of the movable spring 121 is less than the height of the wide end of the retraction hook 203, which is less than the height of the second relief opening 1300 of the first static spring 130. The end of the hook portion 2030 of the retraction hook 203 is provided with a relief slope 2031 for avoiding the movable spring 121. The relief slope 2031 is aligned with the swing amplitude of the transmission member 2. When the electromagnetic relay is reversely energized and the retraction hook 203 of the transmission member 2 is retracted, the fulcrum action of the rotating shaft 206 provided on the transmission member 2 causes the hook portion 2030 of the transmission member 2 to tilt accordingly. The relief slope 2031 provided on the hook portion 2030 is aligned with the angle of the transmission member 2 after the swing, ensuring that the hook portion 2030 and the movable spring 121 are relatively parallel, thereby improving the smoothness and reliability of the hook portion 2030 pulling the movable spring 121. The sheet-like structure of the transmission member 2 is simple and lightweight, improving the transmission sensitivity, and reducing the space occupied, which contributes to a rational, compact and orderly overall structural layout of the product.

[0065] like Figures 27-28As shown, the elastic member 32 is engaged with the engaging block 207 of the transmission member 2 via the engaging interface 3210 thereon, and the end of the armature 36 is engaged with the armature engaging slot 208 of the transmission member 2. The transmission member and the armature utilize a slot engaging method instead of a conventional overlapping method, thereby preventing transmission jamming and disengagement. When the electromagnetic relay is reversely energized, the combined action of the deformation force of the elastic member 32 and the electromagnetic force on the armature 36 pulls the movable spring 121 back. This further addresses the conventional problem of relatively low normally closed pressure and insufficient operational reliability, which results from relying solely on the elasticity of the movable spring 121 to generate pressure, thereby improving product reliability. The rotating shaft 206 of the transmission member 2 is installed in the rotating shaft engaging slot 112 of the base 11. The push rod 202 of the transmission member 2 passes through the second avoidance opening 1300 of the first static spring 130 and is blocked by the movable spring 121 without passing through the first avoidance opening 1210 of the movable spring 121. The retraction hook 203 passes through the second avoidance opening 1300 of the first static spring 130 and the first avoidance opening 1210 of the movable spring 121 in sequence. The hook portion 2030 of the retraction hook 203 can hook the movable spring 121, so that the retraction hook 203 can no longer pass through the first avoidance opening 1210 in the reverse direction. When the retraction hook 203 moves in the reverse direction of the passing direction, its hook portion 2030 hooks the movable spring 121, so that the retraction hook 203 can synchronously drive the movable spring 121.

[0066] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. An electromagnetic relay, comprising an electromagnetic system (3), a base assembly (1) and a transmission member (2), wherein the base assembly (1) comprises a base (11), a movable spring assembly (12) and a stationary spring assembly (13), wherein the normally closed contact (132) and the normally open contact (133) of the movable spring assembly (12) and the stationary spring assembly (13) are arranged correspondingly, wherein the electromagnetic system (3) comprises a yoke (35), an armature (36) and an elastic member (32), wherein the elastic member (32) is connected between the yoke (35) and the transmission member (2), wherein the armature (36) is connected to the transmission member (2), wherein the transmission member (2) is mounted on the base (11), and wherein the transmission member (2) can swing or move relative to the base (11), and wherein: The transmission member (2) comprises a push rod (202) and a retraction hook (203) which are arranged corresponding to the movable spring assembly (12); When the electromagnetic system (3) of the electromagnetic relay is energized in the forward direction, the armature (36) is driven to move and thereby push the transmission member (2), the elastic member (32) undergoes elastic deformation, and at the same time, the push rod (202) of the transmission member (2) pushes the moving reed assembly (12) to close the normally open contact (133) / open the normally closed contact (132); when the electromagnetic system (3) of the electromagnetic relay is energized in the reverse direction, the armature (36) is driven to move in the reverse direction, the elastic member (32) recovers its deformation, and the armature (36) and the elastic member (32) work together to pull the transmission member (2) back, and then the retraction hook (203) of the transmission member (2) pulls the moving reed assembly (12) to open the normally open contact (133) / close the normally closed contact (132); An action indicator plate (205) is integrally provided on the transmission member (2); one end of the transmission member (2) is provided with the action indicator plate (205), and the other end is provided with a rotating shaft (206); a rotating shaft bayonet (112) for mounting the rotating shaft (206) is provided on the base (11); and the transmission member (2) is swingably mounted on the base (11) with the rotating shaft (206) as a fulcrum.

2. The electromagnetic relay according to claim 1, wherein: The transmission member (2) is provided with a connecting block (207) and a fixed block (204) connected in sequence on the side facing the electromagnetic system (3); the fixed block (204) is provided with an armature slot (208); the elastic member (32) is provided with a card interface (3210) that cooperates with the connecting block (207); the elastic member (32) is connected to the connecting block (207) of the transmission member (2) through the card interface (3210) thereon, and the end of the armature (36) is connected to the armature slot (208).

3. The electromagnetic relay according to claim 1, wherein: The movable spring assembly (12) comprises a movable spring (121) and two movable contacts (122), one end of the movable spring (121) is fixed on the base (11), and the other end is provided with two movable contacts (122) located on both sides, and a first avoidance opening (1210) is provided in the middle of the movable spring (121); the static spring assembly (13) comprises a first static spring (130) and a second static spring (131), the first static spring (130) and the second static spring (131) are fixedly mounted on the base (11) and located on both sides of the movable spring (121), wherein the first static spring (130) is close to the transmission member (2) A normally closed contact (132) corresponding to a moving contact (122) is provided on the first static spring piece (130), and a normally open contact (133) corresponding to another moving contact (122) is provided on the second static spring piece (131); the retraction hook (203) is connected to the end of the push rod (202), the push rod (202) passes through the first static spring piece (130) and can be blocked by the moving spring piece (121), the retraction hook (203) passes through the first static spring piece (130) and the first avoidance opening (1210) in sequence, and the retraction hook (203) has a hook portion (2030) that can hook the moving spring piece (121).

4. The electromagnetic relay according to claim 1, wherein: The transmission member (2) is an integrally formed structure and further comprises a sheet-like H-shaped body (201). The top ends of the two vertical arms of the H-shaped body (201) extend toward the electromagnetic system (3) to form two action indicating sheets (205). The bottom ends of the two vertical arms of the H-shaped body (201) are both provided with a rotating shaft (206). The rotating shaft (206) cooperates with the rotating shaft bayonet (112) of the base (11). The H-shaped body (201) is swingably mounted on the base (11) via the rotating shaft (206). On one side of the cross arm of the H-shaped body (201), a connecting block (207) and a fixing block (204) are provided, which are connected in sequence. The fixing block (204) is provided with an armature clamping groove (208) for clamping the armature (36). On the other side of the cross arm of the H-shaped body (201), a push rod (202) and a retraction hook (203) are provided, which are connected in sequence. The retraction hook (203) has a hook portion (2030) for hooking the movable spring (121) of the movable spring assembly (12).

5. The electromagnetic relay according to claim 4, wherein: Both vertical arms of the H-shaped body (201) are provided with longitudinal reinforcing ribs (209).

6. The electromagnetic relay according to any one of claims 1 to 5, characterized in that: The elastic member (32) comprises a reaction spring piece (321), a U-shaped connecting piece (322) and two U-shaped fixing pieces (323); the bottom end of the reaction spring piece (321) is provided with a clamping interface (3210) for connecting to the transmission member (2); the bottom end of the middle section of the U-shaped connecting piece (322) is connected to the top end of the reaction spring piece (321); the two arm ends of the U-shaped connecting piece (322) are respectively vertically connected to one arm end of the two U-shaped fixing pieces (323); the two U-shaped fixing pieces (323) are symmetrically arranged with their openings facing each other; the openings of the two U-shaped fixing pieces (323) are used to clamp the two side edges of the yoke (35).

7. The electromagnetic relay according to claim 6, wherein: The bottom ends of the middle sections of the two U-shaped fixing pieces (323) are both provided with lower limiting pieces (326), the lower limiting pieces (326) are arc pieces, and the two lower limiting pieces (326) are symmetrically arranged in a manner that the convex parts are opposite and the concave parts are back to back, and the two lower limiting pieces (326) are used to clamp the yoke (35); the top end of the middle section of the U-shaped connecting piece (322) is provided with a pressing piece (324) for limiting the armature (36); the top ends of the middle sections of the two U-shaped fixing pieces (323) are both provided with upper limiting pieces (325), the two upper limiting pieces (325) are symmetrically arranged, and the upper limit The positioning plate (325) includes a stopper (3251) for positioning the yoke (35), a clamping portion (3252) for limiting the armature (36), and a pressing portion (3253), wherein the clamping portion (3252) is vertically arranged, the stopper (3251) is horizontally arranged, and is vertically connected between the top end of the U-shaped fixing plate (323) and the bottom end of the clamping portion (3252), and the pressing portion (3253) is connected to the top end of the clamping portion (3252), and the pressing portions (3253) of the two upper positioning plates (325) are symmetrically arranged with the convex portions facing each other and the concave portions facing each other.

8. The electromagnetic relay according to any one of claims 1 to 5, characterized in that: The electromagnetic system (3) further comprises a coil frame (30), a coil (310), an iron core (33), a short-circuit ring (34) and a magnet (37); the coil frame (30) comprises a bottom mounting block (301) at the bottom, a mounting post (302) in the middle and a top mounting block (303) at the top; the coil frame (30) is provided with an axial mounting hole (304); the axial mounting hole (304) passes through the top mounting block (303) and the mounting post (302) and extends to a second chamber connected to the bottom mounting block (301); the iron core (33) is installed in the axial mounting hole (304); the magnet (37) is inserted into the bottom mounting block (301); 01) and connected to the bottom end of the iron core (33); the first section (351) at one end of the yoke (35) is inserted into the second chamber of the bottom mounting block (301) and fits with the magnet (37), and the second section (352) at the other end of the yoke (35) is connected to the elastic member (32); the short-circuit ring (34) is assembled on the top end of the iron core (33) and falls on the top mounting block (303); the third section (361) at one end of the armature (36) is swingably mounted on the top mounting block (303) and is located above the short-circuit ring (34), and the fourth section (362) at the other end of the armature (36) is connected to the transmission member (2).

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