Contact assembly and relay

Abstract

The utility model discloses a contact assembly and a relay, the contact assembly comprises a push piece and a contact assembly which are in transmission connection, the contact assembly comprises a first static reed, a second static reed and a movable reed, the movable reed is arranged between the first static reed and the second static reed, the first static reed is provided with a normally closed contact facing the movable reed, and the second static reed is provided with a normally closed contact facing the movable reed. The movable reed is provided with a first movable contact facing the adaptive normally-closed contact of the first static reed, the second static reed is provided with a normally-open contact facing the movable reed, and the movable reed is provided with a second movable contact facing the adaptive normally-open contact of the second static reed; the movable reed comprises a movable reed body and a pushing part, the first movable contact and the second movable contact are installed on the movable reed body, one end of the pushing part is connected to the movable reed body and is close to the first movable contact and the second movable contact, and the pushing part is in transmission connection with the pushing part. The contact assembly provided by the utility model can reduce the pushing force and holding force required by the deformation of the movable contact spring, and improves the working stability of the relay.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a contact component and a relay. Background Art

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. In fact, it is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] The relay uses the on-off of the electromagnetic system to realize the on-off of the contact assembly. Specifically, when the power is on, the iron core attracts the armature to push the contact assembly to conduct through the pusher. When the power is off, the movable spring of the contact assembly is reset to disconnect the contact assembly and push the pusher and the armature to reset. When the existing relay is powered on, the pusher pushes the waist position of the movable spring to deform the movable spring to realize the conduction of the contact assembly. The driving force required for the deformation of the movable spring is large, and after the contact assembly is turned on, a large holding force is required to maintain the deformation of the movable spring so that the contact assembly continues to conduct. However, when the power is on, the existing relay has a small suction force on the armature by the iron core, which is not enough to support the driving force and holding force required for the deformation of the movable spring, resulting in an unstable working state of the relay. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a contact assembly to reduce the driving force and holding force required for the deformation of the movable spring piece and improve the working stability of the relay.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A contact assembly, comprising: a driving member and a contact assembly connected in a transmission manner, the contact assembly comprising a first static reed, a second static reed and a moving reed, the moving reed being arranged between the first static reed and the second static reed, the first static reed being provided with a normally closed contact facing the moving reed, the moving reed being provided with a first moving contact facing the first static reed and adapted to the normally closed contact, the second static reed being provided with a normally open contact facing the moving reed, and the moving reed being provided with a second moving contact facing the second static reed and adapted to the normally open contact;

[0007] The movable spring comprises a movable spring body and a pushing part, a first movable contact and a second movable contact are mounted on the movable spring body, one end of the pushing part is connected to the movable spring body and is close to the first movable contact and the second movable contact, and the pushing member is transmission-connected to the pushing part so that the pushing member pushes the pushing part to drive the movable spring body from the first static spring to the second static spring, so that the contact assembly is turned on.

[0008] Further, the normally closed contact is arranged on the upper part of the first static spring piece, the first movable contact is arranged on the upper part of the movable spring piece, and the position of the first movable contact corresponds to the position of the normally closed contact;

[0009] The normally open contact is arranged on the upper part of the second static spring piece, the second movable contact is arranged on the upper part of the movable spring piece, and the position of the second movable contact corresponds to the position of the normally open contact;

[0010] One end of the pushing portion is connected to the upper part of the moving spring body and is close to the first moving contact and the second moving contact.

[0011] Furthermore, the center axes of the normally closed contact and the normally open contact are on a straight line.

[0012] Furthermore, the movable spring is provided with a through groove which penetrates along the pushing direction, the through groove is located on the peripheral side of the first movable contact and the second movable contact, and one end of the through groove extends to the edge of the movable spring to separate the movable spring into a movable spring body and a pushing part, and the movable spring body and the pushing part are an integrated structure.

[0013] Furthermore, the movable spring body and the pushing part are separate structures, one end of the pushing part is connected to the movable spring body through a fixing part to form the movable spring, and a gap is set at the non-connection part between the pushing part and the movable spring body to form a through groove, which is located on the peripheral side of the first movable contact and the second movable contact.

[0014] Furthermore, the pushing member includes a pushing member body and a push rod. The pushing member body extends along the pushing direction. The push rod is arranged at one end of the extension direction of the pushing member body. The push rod is transmission-connected with the pushing part, and during the pushing process of the pushing member, the push rod is non-contacted with the first static spring sheet and the second static spring sheet.

[0015] Furthermore, the pushing portion is provided with a through hole which penetrates along the pushing direction and is adapted to fit the push rod, and the push rod is fixedly arranged in the through hole.

[0016] Furthermore, the pushing portion is provided with a through hole penetrating along the pushing direction, the position of the push rod corresponds to the position of the through hole, the push rod is slidably arranged in the through hole, and the size of the through hole is smaller than the size of the corresponding end of the pushing member body.

[0017] The utility model also provides a relay, comprising a housing, wherein an electromagnetic component and a contact component are arranged in the housing, and the electromagnetic component is connected to the contact component through a pushing member.

[0018] Furthermore, the electromagnetic assembly includes a coil assembly, a yoke and an armature, the yoke is fixed to the coil assembly, the armature is arranged on the iron core side of the coil assembly, one end of the armature is connected to the yoke and the other end of the armature is connected to the pusher;

[0019] When powered on, the iron core of the coil assembly attracts the armature, so that the pushing part drives the moving spring body from the first stationary spring to the second stationary spring through the pushing member, so that the moving spring and the second stationary spring are conductive.

[0020] Beneficial effects:

[0021] The utility model designs the movable spring piece into two parts, the movable spring piece body and the pushing part. The pushing part is pushed by the pushing member to deform first, and then the movable spring piece body is driven to deform, so as to achieve the conduction between the movable spring piece and the second static spring piece. When the pushing member is initially pushed, only a small force is needed to push the pushing part to deform. When the pushing part is deformed to a certain position, it can drive the movable spring piece body to deform so that the second movable contact and the normally open contact are in contact and closed, so as to achieve the conduction between the movable spring piece and the second static spring piece. After the movable spring piece and the second static spring piece are in contact, the pushing member can use a small force to push the pushing part to continue to deform, so that the second movable contact and the normally open contact are continuously in contact and closed. Therefore, the contact assembly of the utility model can reduce the driving force and holding force required for the deformation of the movable spring piece, and improve the stability of the relay operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a relay of the utility model;

[0023] Figure 2 It is an exploded view of the relay of the utility model;

[0024] Figure 3 This is an exploded view of the relay of the utility model after removing the housing;

[0025] Figure 4 It is an exploded view of the contact assembly of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the movable reed of the utility model.

[0027] The meanings of the reference numerals are as follows:

[0028] 1. Pushing member; 11. Pushing member body; 12. Push rod; 2. Contact assembly; 21. First static spring; 211. Normally closed contact; 22. Second static spring; 221. Normally open contact; 23. Moving spring; 231. First moving contact; 232. Second moving contact; 233. Moving spring body; 234. Pushing member; 2341. Through hole; 235. Through slot; 3. Shell; 31. Upper cover; 32. Base; 4. Electromagnetic assembly; 41. Coil assembly; 42. Yoke; 43. Armature. DETAILED DESCRIPTION

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] The utility model provides a relay, referring to Figure 1 and Figure 2 , including a housing 3 and a relay main structure, wherein the housing 3 is provided with an inner cavity with a receiving function. Specifically, the housing 3 includes an upper cover 31 and a base 32, wherein the upper cover 31 covers the base 32 to form an inner cavity with a receiving function between the upper cover 31 and the base 32, and the relay main structure is provided in the inner cavity of the housing 3.

[0033] See also Figure 2 The main structure of the relay includes a contact assembly 2, a pusher 1 and an electromagnetic assembly 4. The electromagnetic assembly 4 is connected to the contact assembly 2 through the pusher 1. The on and off of the electromagnetic assembly 4 can control the on and off of the contact assembly 2 through the pusher 1.

[0034] See also Figure 3 The electromagnetic assembly 4 includes a coil assembly 41, a yoke 42 and an armature 43. The yoke 42 is fixed to the coil assembly 41, and the armature 43 is arranged on the iron core side of the coil assembly 41. One end of the armature 43 is connected to the yoke 42 and the other end of the armature 43 is connected to the pushing member 1.

[0035] Specifically, the coil assembly 41 is arranged horizontally, the yoke 42 is fixed on the left side of the coil assembly 41, and the bottom end of the yoke 42 extends toward the bottom of the coil assembly 41 to form an extension portion, the extension portion is located below the coil assembly 41, and the left end of the extension portion is located below the left side of the coil assembly 41, and the right end of the extension portion is located below the right side of the coil assembly 41. The armature 43 is arranged vertically on the right side of the coil assembly 71, and the bottom end of the armature 43 is connected to the right end of the extension portion, and the rotation axis of the armature 43 is formed at the connection between the two. The top end of the armature 43 exceeds the top end of the coil assembly 41, and the pusher 1 is arranged horizontally above the coil assembly 41, and the right end of the pusher 1 is connected to the top end of the armature 2.

[0036] The contact assembly 2 is arranged on the left side of the electromagnetic assembly 4. The contact assembly 2 includes a first static spring piece 21, a second static spring piece 22 and a dynamic spring piece 23. The dynamic spring piece 23 is arranged between the first static spring piece 21 and the second static spring piece 22. The first static spring piece 21 is arranged close to the electromagnetic assembly 4, and the second static spring piece 22 is arranged away from the electromagnetic assembly 4. The first static spring piece 21 is provided with a normally closed contact 211 facing the dynamic spring piece 23, and the dynamic spring piece 23 is provided with a first dynamic contact 231 adapted to the normally closed contact 211 facing the first static spring piece 21, and the second static spring piece 22 is provided with a normally open contact 221 facing the dynamic spring piece 23, and the dynamic spring piece 23 is provided with a second dynamic contact 232 adapted to the normally open contact 221 facing the second static spring piece 22. The left end of the pusher 6 is drivingly connected to the dynamic spring piece 23.

[0037] In the initial state, the movable spring piece 23 is connected to the first static spring piece 21, and the movable spring piece 23 is disconnected from the second static spring piece 22, and the first movable contact 231 of the movable spring piece 23 is closed with the normally closed contact 211. When the electromagnetic assembly 4 is energized, the coil assembly 41 attracts the armature 43, and the armature 43 rotates counterclockwise around the rotating shaft so that the upper part of the armature 43 fits the right end of the coil assembly 41. At this time, the armature 43 drives the pusher 1 to move leftward, and the pusher 1 pushes the movable spring piece 23 to deform leftward until the second movable contact 232 contacts and closes with the normally open contact 221, and the movable spring piece 23 is connected to the second static spring piece 22. When the electromagnetic assembly 4 is powered off, the coil assembly 41 has no attraction force on the armature 43, so that the pusher 1 has no pushing force on the movable spring 23. The movable spring 23 rebounds to the first movable contact 231 and contacts and closes with the normally closed contact 211, and pushes the pusher 1 to move rightward, and drives the armature 43 to reset and separate from the coil assembly 41.

[0038] When the existing relay is powered on, the pusher 1 pushes the waist position of the moving spring 23 to deform the moving spring 23 to achieve conduction between the moving spring 23 and the second static spring 22. The moving spring 23 needs a large pushing force to deform, and after the moving spring 23 and the second static spring 22 are connected, a large holding force is required to maintain the deformation of the moving spring 23 so that the moving spring 23 and the second static spring 22 are continuously connected. However, when the existing relay is powered on, the suction force of the iron core on the armature 43 is small, which is insufficient to support the pushing force and holding force required for the deformation of the moving spring 23, resulting in an unstable working state of the relay.

[0039] For this purpose, the utility model also provides a contact assembly, see Figure 4 and Figure 5, which includes a driving member 1 and a contact assembly 2 connected in a transmission manner, the contact assembly 2 includes a first static reed 21, a second static reed 22 and a movable reed 23, the movable reed 23 is arranged between the first static reed 21 and the second static reed 22, the first static reed 21 is provided with a normally closed contact 211 facing the movable reed 23, the movable reed 23 is provided with a first movable contact 231 facing the first static reed 21 and adapted to the normally closed contact 211, the second static reed 22 is provided with a normally open contact 221 facing the movable reed 23, and the movable reed 23 is provided with a second movable contact 232 facing the second static reed 22 and adapted to the normally open contact 221.

[0040] The movable spring 23 includes a movable spring body 233 and a pushing portion 234, the first movable contact 231 and the second movable contact 232 are installed on the movable spring body 233, one end of the pushing portion 234 is connected to the movable spring body 233 and is close to the first movable contact 231 and the second movable contact 232, and the pushing member 1 is transmission-connected with the pushing portion 234, so that the pushing member 1 pushes the pushing portion 234 to drive the movable spring body 233 from the first static spring 21 to the second static spring 22, so that the movable spring 23 is conductive with the second static spring 22.

[0041] The contact assembly is installed in the relay. When the power is on, the iron core of the coil assembly 41 attracts the armature 43, so that the pushing part 234 is pushed by the pushing member 1 to drive the moving spring body 233 from the first static spring 21 to the second static spring 22, so that the moving spring 23 and the second static spring 22 are conductive.

[0042] Therefore, the utility model designs the movable spring piece 23 into two parts, the movable spring piece body 233 and the pushing part 234, and the pushing part 234 is pushed by the pushing member 1 to deform first, and then the movable spring piece body 233 is driven to deform, so as to realize the conduction between the movable spring piece 23 and the second static spring piece 22. When the pushing member 1 is initially pushed, only a small force is needed to push the pushing part 234 to deform. When the pushing part 234 is deformed to a certain position, it can drive the movable spring piece body 233 to deform so that the second movable contact 232 is in contact and closed with the normally open contact 221, so as to realize the conduction between the movable spring piece 23 and the second static spring piece 22. After the movable spring piece 23 is in contact with the second static spring piece 22, the pushing member 1 can use a small force to push the pushing part 234 to continue to deform, so that the second movable contact 232 is continuously in contact and closed with the normally open contact 221. Therefore, the contact assembly of the utility model can reduce the driving force and holding force required for the deformation of the movable spring piece 23, so that the suction force of the close-fitting armature 43 can push the movable spring piece 23 to deform, so that the second movable contact 232 contacts and closes with the normally open contact 221, and remains in a closed state when the power is on, thereby improving the stability of the relay operation.

[0043] Preferably, the normally closed contact 211 is arranged on the upper part of the first static spring piece 21, the first movable contact 231 is arranged on the upper part of the movable spring piece 23, and the position of the first movable contact 231 corresponds to the position of the normally closed contact 211. The normally open contact 221 is arranged on the upper part of the second static spring piece 22, the second movable contact 232 is arranged on the upper part of the movable spring piece 23, and the position of the second movable contact 232 corresponds to the position of the normally open contact 221. One end of the push portion 234 is connected to the upper part of the movable spring piece body 233 and is close to the first movable contact 231 and the second movable contact 232. Therefore, the push portion 234 is arranged on the upper part of the movable spring piece 23, and when it is pushed and deformed, it is easy to drive the movable spring piece body 233 to deform, so as to realize the conduction between the movable spring piece 23 and the second static spring piece 22, and the conduction state is always maintained in the power-on state.

[0044] In the present invention, the central axes of the normally closed contact 211 and the normally open contact 221 are in a straight line. Therefore, the first movable contact 231 and the second movable contact 232 are installed at the same installation angle relative to the normally closed contact 211 and the normally open contact 221, which is convenient for installation and the setting of the pusher 234.

[0045] The movable spring body 233 and the pushing part 234 of the utility model can be an integral structure or a split structure. When the movable spring body 233 and the pushing part 234 are an integral structure, the movable spring 23 is provided with a through slot 235 that penetrates along the pushing direction, and the through slot 235 is located on the peripheral side of the first movable contact 231 and the second movable contact 232, and one end of the through slot 235 extends to the edge of the movable spring 23 to separate the movable spring 23 into the movable spring body 233 and the pushing part 234. The movable spring body 233 and the pushing part 234 of the integral structure are more firmly connected, so that the transmission is more accurate.

[0046] The movable spring body 233 and the push part 234 are split structures, one end of the push part 234 is connected to the movable spring body 233 through a fixing member to form the movable spring 23, and a gap is set at the non-connected part between the push part 234 and the movable spring body 233 to form a through groove 235, and the through groove 235 is located on the peripheral side of the first movable contact 231 and the second movable contact 232. Since the push part 234 is often subjected to force and is easily damaged, the split structure facilitates the replacement of the push part 234 and saves costs.

[0047] It should be noted that the fixing parts may be riveted, screwed, etc.

[0048] In the present utility model, the pusher 1 includes a pusher body 11 and a push rod 12. The pusher body 11 extends in the pushing direction. The push rod 12 is arranged at one end of the pusher body 11 in the extending direction and is far away from the armature 43. The push rod 12 is transmission-connected with the push portion 234. In the process of pushing the pusher 1, the push rod 12 is non-contacted with the first static spring piece 21 and the second static spring piece 22. Therefore, in the state of power-on, the iron core of the coil assembly 41 attracts the armature 43, and the armature 43 drives the pusher 1 to move, so that the push rod 12 of the pusher 1 pushes the push portion 234 to drive the movable spring piece body 233 from the first static spring piece 21 to the second static spring piece 22, so that the movable spring piece 23 and the second static spring piece 22 are connected.

[0049] In one embodiment, the push portion 234 is provided with a through hole 2341 for fitting the push rod 12 and passing through the push direction, and the push rod 12 is fixedly inserted in the through hole 2341. When the power is on, the iron core of the coil assembly 41 attracts the armature 43, and the armature 43 drives the push member 1 to move, and the push rod 12 of the push member 1 moves to drive the push portion 234 to deform. When the push portion 234 is deformed to a certain position, it can drive the movable spring body 233 to deform so that the second movable contact 232 and the normally open contact 221 are in contact and closed, thereby realizing the conduction between the movable spring 23 and the second static spring 22. Since the push rod 12 is fixedly inserted in the through hole 2341, the movement of the push rod 12 and the deformation of the push portion 234 are performed synchronously, and the sensitivity is high.

[0050] In another embodiment, the push part 234 is provided with a through hole 2341 penetrating along the pushing direction, the position of the push rod 12 corresponds to the position of the through hole 2341, the push rod 12 is slidably penetrated in the through hole 2341, and the size of the through hole 2341 is smaller than the size of the corresponding end of the push member body 11. In the state of power on, the iron core of the coil assembly 41 attracts the armature 43, and the armature 43 drives the push member 1 to move. When the push rod 12 of the push member 1 moves to the push member body 11 to contact the push part 234, the push member body 11 moves to push the push part 234 to deform. When the push part 234 is deformed to a certain position, it can drive the movable spring body 233 to deform so that the second movable contact 232 and the normally open contact 221 are in contact and closed, so as to realize the conduction between the movable spring 23 and the second static spring 22. In this structure, the deformation of the push part 234 pushed by the push member 1 has a certain delay, so that the deformation of the push part 234 has a certain buffer, and the push part 234 is not easy to be damaged.

[0051] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A contact assembly, characterized in that: include: A driving member (1) and a contact assembly (2) in transmission connection, the contact assembly (2) comprising a first static reed (21), a second static reed (22) and a moving reed (23), the moving reed (23) being arranged between the first static reed (21) and the second static reed (22), the first static reed (21) being provided with a normally closed contact (211) facing the moving reed (23), the moving reed (23) being provided with a first moving contact (231) facing the first static reed (21) and matching the normally closed contact (211), the second static reed (22) being provided with a normally open contact (221) facing the moving reed (23), and the moving reed (23) being provided with a second moving contact (232) facing the second static reed (22) and matching the normally open contact (221); The movable spring (23) comprises a movable spring body (233) and a pushing portion (234); the first movable contact (231) and the second movable contact (232) are mounted on the movable spring body (233); one end of the pushing portion (234) is connected to the movable spring body (233) and is close to the first movable contact (231) and the second movable contact (232); the pushing member (1) is transmission-connected to the pushing portion (234) so ​​that the pushing member (1) pushes the pushing portion (234) to drive the movable spring body (233) from the first static spring (21) to the second static spring (22), thereby making the contact assembly (2) conductive.

2. The contact assembly according to claim 1, characterized in that: The normally closed contact (211) is arranged on the upper part of the first static reed (21), the first movable contact (231) is arranged on the upper part of the movable reed (23), and the position of the first movable contact (231) corresponds to the position of the normally closed contact (211); The normally open contact (221) is arranged on the upper part of the second static reed (22), the second movable contact (232) is arranged on the upper part of the movable reed (23), and the position of the second movable contact (232) corresponds to the position of the normally open contact (221); One end of the pushing portion (234) is connected to the upper portion of the movable spring body (233) and is close to the first movable contact (231) and the second movable contact (232).

3. The contact assembly according to claim 2, characterized in that: The center axes of the normally closed contact (211) and the normally open contact (221) are on a straight line.

4. The contact assembly according to any one of claims 1 to 3, characterized in that: The movable reed (23) is provided with a through groove (235) penetrating along the pushing direction, the through groove (235) is located on the peripheral side of the first movable contact (231) and the second movable contact (232), and one end of the through groove (235) extends to the edge of the movable reed (23) to separate the movable reed (23) into the movable reed body (233) and the pushing portion (234), and the movable reed body (233) and the pushing portion (234) are an integrated structure.

5. The contact assembly according to any one of claims 1 to 3, characterized in that: The movable spring body (233) and the pushing portion (234) are separate structures, one end of the pushing portion (234) is connected to the movable spring body (233) through a fixing member to form the movable spring (23), a gap is provided at a non-connected portion between the pushing portion (234) and the movable spring body (233) to form a through groove (235), and the through groove (235) is located on the peripheral side of the first movable contact (231) and the second movable contact (232).

6. The contact assembly according to claim 1, characterized in that: The pushing member (1) comprises a pushing member body (11) and a push rod (12); the pushing member body (11) extends along a pushing direction; the push rod (12) is arranged at one end of the pushing member body (11) in the extending direction; the push rod (12) is transmission-connected to the pushing portion (234); and during the pushing process of the pushing member (1), the push rod (12) is arranged in a non-contact manner with the first static spring sheet (21) and the second static spring sheet (22).

7. The contact assembly according to claim 6, characterized in that: The pushing portion (234) is provided with a through hole (2341) penetrating along the pushing direction and adapted to fit the push rod (12), and the push rod (12) is fixedly inserted through the through hole (2341).

8. The contact assembly according to claim 6, characterized in that: The pushing portion (234) is provided with a through hole (2341) penetrating along the pushing direction, the position of the push rod (12) corresponds to the position of the through hole (2341), the push rod (12) is slidably inserted into the through hole (2341), and the size of the through hole (2341) is smaller than the size of the corresponding end of the pushing member body (11).

9. A relay, characterized in that: include: A shell (3), wherein an electromagnetic assembly (4) and a contact assembly according to any one of claims 1 to 8 are arranged in the shell (3), and the electromagnetic assembly (4) is connected to the contact assembly (2) via the pushing member (1).

10. The relay according to claim 9, characterized in that: The electromagnetic assembly (4) comprises a coil assembly (41), a yoke (42) and an armature (43); the yoke (42) is fixed to the coil assembly (41); the armature (43) is arranged on the iron core side of the coil assembly (41); one end of the armature (43) is connected to the yoke (42); and the other end of the armature (43) is connected to the pushing member (1); When powered on, the iron core of the coil assembly (41) attracts the armature (43), so that the pushing member (1) pushes the pushing portion (234) to drive the movable spring body (233) from the first static spring (21) to the second static spring (22), thereby making the movable spring (23) conductive with the second static spring (22).

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