Relay

Abstract

A relay comprises a seat body, a contact assembly, a magnetic circuit assembly and a shell. The magnetic circuit assembly and the contact assembly are arranged on the seat body, and the shell covers the seat body; the contact assembly is provided with a static reed, one end of the static reed is provided with a first bending part and penetrates through the seat body, the other end of the static reed is provided with a second bending part and penetrates through the shell, and a static contact is arranged between the first bending part and the second bending part; the electric connector is characterized in that the seat body is provided with a first slot extending along the height direction at the position of the static reed, and the first bending part is arranged in the first slot in a penetrating manner; a blocking part extending in the height direction of the base is arranged on the side wall, close to the second bent part, of the shell, and the blocking part is opposite to the second bent part to block the static reed from moving in the height direction relative to the base. According to the utility model, an anti-drawing structure is added, so that the assembling stability and the performance reliability of the contact assembly are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical component field, especially a kind of relay. BACKGROUND

[0002] Push rod type superminiature relay is composed of base, magnetic circuit part arranged on the base, push card and contact part etc. Contact part includes moving spring leaf assembly and static spring leaf assembly, moving spring leaf assembly includes moving spring leaf with moving contact, and static spring leaf assembly includes static spring leaf with static contact. Magnetic circuit part includes coil holder, core, yoke and armature. Its working principle is that when coil is energized, then core generates electromagnetic attraction to drive armature to swing, and then drive push card to push moving spring leaf, so that moving contact on moving spring leaf and static contact on static spring leaf are closed / opened. When coil is de-energized or excitation current is reduced to a certain value, counter torque of moving spring leaf is greater than electromagnetic attraction torque, moving spring leaf resets to drive push card, so as to drive armature to swing back to initial state, and moving contact on moving spring leaf and static contact on static spring leaf are opened / closed.

[0003] At present, as the use scene of relay is more and more, the requirement of various parameters of relay is higher and higher, it requires that the volume of relay cannot be too large, but the reduction of volume means that the space in relay is small, and the layout and installation of various components are prone to problems. For example, because the connecting part of static spring leaf of contact part and shell is not a structure resistant to pulling out, static spring leaf is easy to be pulled out by small external force, and the creepage distance of contact part and magnetic circuit part is too small, which affects the stability of relay structure and the reliability of performance. CONTENT OF UTILITY MODEL

[0004] The main purpose of the utility model is to overcome the above-mentioned defects in the prior art, and a relay is provided, which increases the structure resistant to pulling out to ensure the stability of contact assembly assembly and the reliability of performance.

[0005] The utility model adopts the following technical solutions:

[0006] A relay, comprising a seat body, a contact assembly, a magnetic circuit assembly and a shell, wherein the magnetic circuit assembly and the contact assembly are arranged on the seat body, and the shell is arranged outside the seat body; the contact assembly is provided with a static spring leaf, one end of the static spring leaf is provided with a first bending part and passes through the seat body, the other end of the static spring leaf is provided with a second bending part and is arranged in the shell, and a static contact is arranged between the first bending part and the second bending part; the seat body is provided with a first insertion slot extending in the height direction at the position of the static spring leaf, and the first bending part is arranged in the first insertion slot; and the side wall of the shell close to the second bending part is provided with a blocking part extending in the height direction of the seat body, and the blocking part is opposite to the second bending part to block the movement of the static spring leaf in the height direction relative to the seat body.

[0007] The shell is provided with a first insertion hole on the side wall of the seat body in the height direction; the second bending part passes through the first insertion hole and is provided with a first inclined surface at the bending part; the blocking part is close to the first insertion hole and the end thereof away from the side wall of the shell is provided with a second inclined surface adapted to and opposite to the first inclined surface.

[0008] The first insertion slot is further provided with two limiting ribs on the side walls in the width direction of the seat body, respectively, and a limiting groove is formed between the limiting ribs and the side wall of the first insertion slot in the length direction of the seat body for inserting and limiting the first bending part; the side wall of the first insertion slot in the height direction of the seat body is further provided with a second insertion hole, and the second insertion hole has a spacing with the limiting groove in the length direction of the seat body, and the first bending part passes through the second insertion hole after being inserted into the limiting groove.

[0009] The contact assembly comprises two static spring sheets and a dynamic spring sheet, and the two static spring sheets are arranged at intervals along the length direction of the seat body; the seat body is correspondingly provided with two first insertion slots arranged at intervals along the length direction of the seat body, and an empty slot is formed between the two first insertion slots; the dynamic contact point of the contact assembly is located between the static contact points of the two static spring sheets and above the empty slot.

[0010] The seat body is further provided with a second insertion slot extending along the height direction of the seat body, and the second insertion slot and the first insertion slot are close to the two sides in the width direction of the seat body, respectively; the contact assembly is provided with a dynamic spring sheet and a dynamic spring lead-out sheet, and the dynamic spring lead-out sheet is inserted into and passes through the second insertion slot; one end of the dynamic spring sheet is connected with the dynamic spring lead-out sheet, and the other end of the dynamic spring sheet extends above the empty slot along the width direction of the seat body and is provided with the dynamic contact point.

[0011] The side of the shell away from the seat body is further provided with a first slot and a second slot extending along the height direction of the seat body; the second bending part of the static spring sheet is located in the first slot; and the end of the dynamic spring lead-out sheet away from the seat body is located in the second slot.

[0012] The magnetic circuit assembly comprises a coil group, a yoke, an armature and a push card; the yoke comprises a first yoke part and a second yoke part extending along the length direction of the seat body, the first yoke part is arranged in the coil group, and one end of the first yoke part and the second yoke part is connected; the armature is arranged along the height direction of the seat body and located at the other end of the first yoke part and the second yoke part, and one end of the armature is overlapped on the corresponding end of the second yoke part; the push card is arranged along the length direction of the seat body and one end thereof is connected with one end of the armature, and the other end of the push card is connected with the dynamic spring sheet of the contact assembly; the armature is swung to drive the push card to move and drive the dynamic spring sheet to act.

[0013] The end of the push card connected with the moving spring sheet is provided with two card plates distributed along the length direction of the seat body, and the two card plates are located on the side of the push card opposite to the moving spring sheet and are formed with card slots, the side of the moving spring sheet opposite to the push card is clamped on the card slots and is provided with two protrusions, and the two protrusions are distributed along the width direction of the seat body and are clamped on the two outer sides of the side walls of the card slots.

[0014] The seat body is provided with a mounting cavity, the magnetic circuit assembly is arranged in the mounting cavity, and the contact assembly is located outside the mounting cavity; the shell is provided with a baffle extending along the height direction of the seat body on the side opposite to the seat body, and the baffle is located on the outer periphery of the side wall adjacent to the mounting cavity and the contact assembly.

[0015] As can be seen from the description of the utility model above, compared with the prior art, the utility model has the following beneficial effects:

[0016] In the utility model, the first insertion slot is arranged on the seat body for inserting the first bending part of the static spring sheet, the side wall close to the second bending part of the shell is provided with a blocking part, the movement of the static spring sheet in the height direction relative to the seat body is blocked by the blocking part, the static spring sheet has the anti-pulling capacity, the reliability of the assembly of the static spring sheet is ensured, the normal use of the relay is ensured, and the performance is not affected,

[0017] In the utility model, the shell is provided with the first insertion hole for the first bending part to pass through, the blocking part is close to the first insertion hole and is provided with the second slope opposite to the first slope of the second bending part and matched with the first slope, the movement of the second bending part of the static spring sheet relative to the shell is blocked by the second slope abutting against the first slope, and the structure is simple and easy to realize.

[0018] In the utility model, the seat body is provided with the containing cavity for separating the magnetic circuit part from the moving and static spring part, the limiting ribs are arranged in the first insertion slot to form the limiting slot for limiting the first bending part, and the empty slot is formed between the adjacent first insertion slots; the second insertion slot is further arranged on the seat body for the moving spring leading sheet to pass through, the insertion connection of the static spring sheet and the moving spring leading sheet with the seat body is more stable, and the insulation creepage distance is increased.

[0019] In the utility model, the magnetic circuit part comprises a coil group, a yoke, an armature and a push card; the yoke is provided with a first yoke part and a second yoke part, the first yoke part is arranged in the coil group, the armature is overlapped on the second yoke part and is connected with the push card, the push card is connected with the static spring sheet through the card slot, the movement of the push card is driven by the armature swinging to drive the moving spring sheet to move, and the push rod type structure is adopted, the magnetic circuit part is compact in structure, and the overall volume is reduced.

[0020] The first slot and the second slot are arranged on the seat body, and are respectively used for accommodating the second bending part of the static spring sheet and the corresponding end of the dynamic spring leading-out sheet, so that the insulation between the adjacent static spring sheets of the dynamic and static spring part and between the dynamic spring sheet and the static spring leading-out sheet is strengthened. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a structure diagram;

[0022] Figure 2 The utility model discloses a front view; Figure 1

[0023] Figure 3 The utility model discloses an exploded view; Figure 1

[0024] Figure 4 The utility model discloses a magnetic circuit assembly and contact assembly cooperation drawing;

[0025] Figure 5 The utility model discloses a seat body structure diagram;

[0026] Figure 6 The utility model discloses a shell structure diagram;

[0027] Figure 7 The utility model discloses a shell internal structure diagram;

[0028] Figure 8 The utility model discloses a push card structure diagram;

[0029] Figure 9 The utility model discloses a push card perspective view;

[0030] Figure 10 The utility model discloses a sectional view; Figure 1

[0031] Wherein:

[0032] 10, seat body;11, installation cavity;12, first slot;13, second slot;14, empty slot;15, limiting rib;16, limiting slot;17, second insertion hole;20, contact assembly;21, static spring sheet;21a, first bending part;21b, second bending part;21c, first inclined surface;22, static contact;23, dynamic spring sheet;24, dynamic spring leading-out sheet;25, dynamic contact;26, convex part;30, magnetic circuit assembly;31, coil group;32, yoke;32a, first yoke part;32b, second yoke part;33, armature;34, push card;35, card plate;36, card slot;40, shell;41, blocking part;42, first insertion hole;43, second inclined surface;44, first slot;45, second slot;46, baffle.

[0033] The utility model will be further described in further detail in connection with the drawings and specific embodiments. DETAILED DESCRIPTION ​​​

[0034] The utility model is further described below through specific embodiments.

[0035] Referring to Figures 1 to 9 A relay includes a base body 10, a contact assembly 20, a magnetic circuit assembly 30, and a shell 40. The base body 10 is provided with a mounting cavity 11, the top of the mounting cavity 11 is open, the magnetic circuit assembly 30 is arranged in the mounting cavity 11, and the contact assembly 20 is located outside the mounting cavity 11. The shell 40 covers the outside of the base body 10, and the shell seals the mounting cavity 11, that is, the base body 10, the contact assembly 20, and the magnetic circuit assembly 30 are sealed in the mounting cavity 11.

[0036] The contact assembly 20 is provided with at least one static spring piece 21, the static spring piece 21 extends along the height direction of the base body 10, and one end of the static spring piece 21 is provided with a first bending part 21a, the first bending part 21a penetrates the base body 10, that is, the end of the first bending part 21a is exposed outside the base body 10. The other end of the static spring piece 21 is provided with a second bending part 21b, the second bending part 21b penetrates the shell 40, and a static contact 22 is arranged between the first bending part 21a and the second bending part 21b. The contact assembly 20 can be provided with one static spring piece 21 or two static spring pieces 21 or more, and two static spring pieces 21 are taken as an example in the figure, and the two static spring pieces 21 are distributed at intervals along the length direction of the base body 10. Then, in the length direction of the base body 10, one static spring piece 21 is close to the mounting cavity 11, and can serve as a normally open contact; the other static spring piece 21 is away from the mounting cavity 11 and close to the side wall of the shell, and can serve as a normally closed contact, and the two static contacts 22 on the two static spring pieces 21 are arranged oppositely.

[0037] The base body 10 is provided with a first insertion slot 12 extending along the height direction at the position of the static spring piece 21, and in the height direction of the base body 10, the size of the first insertion slot 12 is smaller than the size of the mounting cavity 11, the first bending part 21a penetrates the first insertion slot 12, so as to ensure the stability of the insertion of the static spring piece 21, and the static contact 22 is located above the first insertion slot 12. The number of the first insertion slots 12 corresponds to the number of the static spring pieces 21, and for two or more static spring pieces 21, there is a gap between the two adjacent first insertion slots 12 to form a gap 14, and the moving contact 25 of the contact assembly 20 is located above the gap 14. By arranging the first insertion slot 12 for the static spring piece 21 to penetrate on the base body 10, and arranging the gap 14 between the two first insertion slots 12, the insulation creepage distance can also be increased.

[0038] The side wall of the shell 40 close to the second bending part 21b is provided with a blocking part 41 extending along the height direction of the seat body 10, and the blocking part 41 is opposite to the second bending part 21b. The blocking part 41 is arranged to block the movement of the static spring sheet 21 in the height direction of the seat body 10, that is, to increase the pull-out resistance of the static spring sheet 21, so that the static spring sheet 21 is not easy to be pulled out during plug-in. The shell 40 can be provided with the blocking part 41 for each static spring sheet 21, or provided with the blocking part 41 for part of the static spring sheet 21, which is adjusted according to actual needs. In the figure, the shell 40 is provided with the blocking part 41 for the normally open static spring sheet 21, and the normally closed static spring sheet 21 is not provided with the blocking part 41.

[0039] Further, the shell 40 is provided with a first insertion hole 42 on the side wall in the height direction of the seat body 10, the vertical section of the second bending part 21b passes through the first insertion hole 42, the bending part of the second bending part 21b is located in the shell 40 and is provided with a first inclined surface 21c at the bending part, the blocking part 41 is close to the first insertion hole 42, and the end of the blocking part 41 away from the side wall of the shell 40 is provided with a second inclined surface 43 matched with the first inclined surface 21c and opposite to the first inclined surface 21c. The first inclined surface 21c and the second inclined surface 43 can be in contact or have a gap. In the length direction of the seat body 10, the blocking part 41 is located between the static contact 22 of the static spring sheet 21 and the corresponding first insertion hole 42.

[0040] In the embodiment, the first insertion slot 12 is further provided with two limiting ribs 15 on the two side walls in the width direction of the seat body 10, respectively, and the two limiting ribs 15 and the side walls of the first insertion slot 12 in the length direction of the seat body 10 form a limiting groove 16, which is used for inserting the bending section of the second bending part 21a and limiting the second bending part 21a, that is, limiting the movement of the static spring sheet 21 and the second bending part 21a in the length direction of the seat body 10. The side wall of the first insertion slot 12 in the height direction of the seat body 10 is further provided with a second insertion hole 17, and the second insertion hole 17 and the limiting groove 16 have a gap in the length direction of the seat body 10. The bending section of the second bending part 21a is inserted into the limiting groove 16, and the vertical section passes through the second insertion hole 17. The first insertion slot 12 can also improve the pull-out resistance of the second bending part 21a of the static spring sheet 21, and cooperate with the blocking part 41 on the shell 40 to improve the overall pull-out resistance of the static spring sheet 21.

[0041] The contact assembly 20 is further provided with a moving spring 23 and a moving spring lead-out piece 24, the moving spring lead-out piece 24 is arranged outside the mounting cavity 11 and on the side of the seat body 10 away from the fixed spring 21 in the width direction of the seat body 10, the moving spring lead-out piece 24 extends along the height direction of the seat body 10, and one end thereof penetrates through the seat body 10. One end of the moving spring 23 is fixedly connected with the moving spring lead-out piece 24, and the other end of the moving spring 23 extends to the opposite side of the fixed spring 21 in the width direction of the seat body 10, and the moving spring 23 is provided with a moving contact 25 opposite to the fixed contact 22, and in the figure, the moving contact 25 is opposite to and located between the two fixed contacts 22. The moving contact 25, the moving spring lead-out piece 24 and the moving spring 23 are rivetedly connected.

[0042] Further, the seat body 10 is further provided with a second slot 13 extending along the height direction of the seat body 10, and the second slot 13 and the first slot 12 are respectively close to the two sides of the seat body 10 in the width direction. The size of the second slot 13 in the height direction of the seat body 10 can be less than or equal to the size of the mounting cavity 11, the moving spring lead-out piece 24 is inserted and penetrates through the second slot 13, and the second slot 13 is arranged to ensure that the insertion between the moving spring lead-out piece 24 and the seat body 10 is more stable and reliable. The frame type structure of the mounting cavity 11 is adopted in the utility model, and the first slot 12 and the second slot 13 are matched, so that the insulation creepage isolation between the magnetic circuit assembly 30 and the contact assembly 20 can be realized, and the insulation performance between the coil and the contact can be improved.

[0043] The shell 40 is further provided with a first slot 44 and a second slot 45 extending along the height direction of the seat body 10 on the side away from the seat body 10, the vertical end of the second bending part 21b of the fixed spring 21 of the contact assembly 20 is correspondingly penetrated in the first slot 44, and the size of the first slot 44 in the height direction of the seat body 10 corresponds to the size of the vertical section of the second bending part 21b. The end of the moving spring lead-out piece 24 away from the seat body 10 is located in the second slot 45. In the figure, two first slots 44 are arranged to accommodate the vertical sections of the second bending parts 21b of the corresponding two fixed springs 21, and the second slot 45 is arranged to accommodate the corresponding end of the corresponding moving spring lead-out piece 24, so as to improve the insulation between the adjacent fixed springs 21 and between the moving spring lead-out piece 24 and the fixed spring 21 in the contact assembly 20.

[0044] In the embodiment, the magnetic circuit assembly 30 includes a coil set 31, a yoke 32, an armature 33, and a push card 34. The coil set 31 is arranged along the length direction of the seat body 10 and includes a skeleton and a coil wound around the outer periphery of the skeleton. The yoke 32 includes a first yoke portion 32a extending along the length direction of the seat body 10 and a second yoke portion 32b, the first yoke portion 32a is arranged through the coil set 31 as a core, and the first yoke portion 32a and the second yoke portion 32b are connected at one end in the length direction of the seat body 10. The armature 33 is arranged along the height direction of the seat body 10 and located at the other end of the first yoke portion 32a and the second yoke portion 32b, one end of the armature 33 is overlapped on the corresponding end of the second yoke portion 32b, and the other end of the armature 33 is opposite to the corresponding end of the first yoke portion 32a. The push card 34 is arranged above the second yoke portion 32b and along the length direction of the seat body 10, one end of the push card 34 is connected to one end of the armature 33, and the other end of the push card 34 is connected to the moving contact piece 23 of the contact assembly 20, and the push card 34 can be driven to move along the length direction of the seat body 10. The moving contact piece 23 is driven to move by the armature 33 swinging to drive the moving contact piece 23 to act, or the moving contact piece 23 is returned to drive the push card 34 to move to make the armature 33 swing and return. In the figure, the action of the moving contact piece 23 can drive the moving contact 25 to close with one of the static contacts 22 and separate from the other static contact 22.

[0045] Further, the end of the push card 34 connected to the moving contact piece 23 is provided with two clamping plates 35 spaced along the length direction of the seat body 10, the two clamping plates 35 are located on the opposite side of the push card 34 relative to the moving contact piece 23 and are formed with clamping grooves 36, and the side of the moving contact piece 23 opposite to the push card 34 is clamped on the clamping grooves 36. The side of the moving contact piece 23 matched with the clamping grooves 36 is further provided with two protrusions 26, the two protrusions 26 extend along the length direction of the seat body 10 and are spaced along the width direction of the seat body 10, and the two protrusions 26 are respectively clamped on the two outer sides of the side walls of the clamping grooves 36, thereby ensuring the stability and reliability of the connection between the push card 34 and the moving contact piece 23.

[0046] In the embodiment, there is a gap between the top surface of the seat body 10 and the corresponding side of the shell 40, and the opposite side of the seat body 10 is further provided with a baffle 46 extending along the height direction of the seat body 10, and the baffle 46 is located on the outer periphery of the side wall adjacent to the contact assembly 20 in the mounting cavity 11. The baffle 46 is one or more, and is provided with a gap for the push card 34 to avoid affecting the movement of the push card 34. The gap between the top surface of the seat body 10 and the corresponding side of the shell 40 is closed by the baffle 46, further ensuring the insulation and creepage isolation between the magnetic circuit assembly 30 and the contact assembly 20.

[0047] The utility model discloses a relay, under the normal state, the movable contact 25 of movable spring piece 23 is contacted with the static contact 22 of normally closed static spring piece 21. When the coil group 31 is electrified, the electromagnetic attraction of first yoke iron part 32a drives armature 33 to attract, and armature 33 drives push card 34 to pull movable spring piece 23, so that movable contact 25 is disconnected with the static contact 22 of normally closed static spring piece 21, and is connected with the static contact 22 of normally open static spring piece 21. When the coil group 31 is de-energized, under the action of the reaction force of movable spring piece 23, movable contact 25 is disconnected with the static contact 22 of normally open static spring piece 21, and is connected with the static contact 22 of normally closed static spring piece 21, and movable spring piece 23 also drives push card 34 and armature 33 to reset to the normal state.

[0048] When the relay is pulled or the static spring piece is pulled, due to the action of the first slot 12 and the blocking portion 41, the insertion between the static spring piece 21 and the seat body 10 and the insertion between the static spring piece 21 and the shell 40 is very stable, the static spring piece 21 has the ability to resist pulling, and cannot be easily pulled out, so that the assembly and fixation of the static spring piece 21 are reliable, and the use and performance of the relay are not affected.

[0049] In the utility model, the terms "first", "second", "third" and the like are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the directions or position relationships indicated by "upper", "lower", "left", "right", "front" and "back" are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model, and are not used to indicate or imply that the devices must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the protection scope of the utility model. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0050] In addition, in the description of the present application, "multiple" means two or more, unless otherwise specified. The association relationship between the associated objects is described, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0051] The above is only a specific embodiment of the utility model, but the design concept of the utility model is not limited thereto, and any non-essential modification of the utility model using this concept shall be deemed to infringe the protection scope of the utility model.

Claims

1. A relay comprising a base, a contact assembly, a magnetic circuit assembly and a housing; the magnetic circuit assembly and the contact assembly are arranged on the base, and the housing is arranged outside the base; the contact assembly is provided with a static spring piece, one end of the static spring piece is provided with a first bending part and passes through the base, the other end of the static spring piece is provided with a second bending part and passes through the housing, and a static contact is arranged between the first bending part and the second bending part; characterized in that: The seat body is provided with a first slot extending in the height direction at the position of the static spring sheet, and the first bending part is arranged in the first slot; the side wall of the shell near the second bending part is provided with a blocking part extending in the height direction of the seat body, and the blocking part is opposite to the second bending part to block the movement of the static spring sheet in the height direction relative to the seat body.

2. A relay according to claim 1, characterized in that: The shell is provided with a first insertion hole on the side wall in the height direction of the seat body; the second bending part passes through the first insertion hole and is provided with a first inclined surface at the bending part; the end of the blocking part away from the side wall of the shell is provided with a second inclined surface opposite to the first inclined surface.

3. A relay according to claim 1, wherein: The first slot is further provided with two limiting ribs on the two side walls in the width direction of the seat body, respectively, and a limiting groove is formed between the limiting ribs and the side wall of the first slot in the length direction of the seat body to allow the first bending part to be inserted and limited; the side wall of the first slot in the height direction of the seat body is further provided with a second insertion hole, and the second insertion hole is spaced from the limiting groove in the length direction of the seat body, and the first bending part passes through the second insertion hole after being inserted into the limiting groove.

4. A relay according to claim 1, wherein: The contact assembly includes two static spring sheets and a dynamic spring sheet, and the two static spring sheets are arranged at intervals in the length direction of the seat body; the seat body is correspondingly provided with two first slots arranged at intervals in the length direction of the seat body, and an empty groove is formed between the two first slots; the dynamic contact point of the contact assembly is located between the static contact points of the two static spring sheets and above the empty groove.

5. A relay according to claim 4, wherein: The seat body is further provided with a second slot extending in the height direction of the seat body, and the second slot and the first slot are respectively close to the two sides in the width direction of the seat body; the contact assembly is provided with a dynamic spring sheet and a dynamic spring lead-out sheet, and the dynamic spring lead-out sheet is inserted and passes through the second slot; one end of the dynamic spring sheet is connected with the dynamic spring lead-out sheet, and the other end of the dynamic spring sheet extends above the empty groove in the width direction of the seat body and is provided with the dynamic contact point.

6. A relay according to claim 5, wherein: The side of the shell away from the seat body is further provided with a first slot and a second slot extending in the height direction of the seat body; the second bending part of the static spring sheet is located in the first slot; and the end of the dynamic spring lead-out sheet away from the seat body is located in the second slot.

7. A relay according to claim 5, wherein: The magnetic circuit assembly includes a coil group, a yoke, an armature and a push card; the yoke includes a first yoke part and a second yoke part extending in the length direction of the seat body, the first yoke part is arranged in the coil group, and one end of the first yoke part and the second yoke part is connected; the armature is arranged in the height direction of the seat body and located at the other end of the first yoke part and the second yoke part, and one end of the armature is overlapped on the corresponding end of the second yoke part; the push card is arranged in the length direction of the seat body, and one end of the push card is connected with one end of the armature, and the other end of the push card is connected with the dynamic spring sheet of the contact assembly; the movement of the push card is driven by the swing of the armature to drive the dynamic spring sheet to act.

8. A relay according to claim 7, wherein: The end of the push card connected with the moving spring plate is provided with two card plates distributed along the length direction of the seat body, the two card plates are located on the side of the push card opposite to the moving spring plate and are formed with card slots, the side of the moving spring plate opposite to the push card is clamped on the card slots and is provided with two protrusions, the two protrusions extend along the length direction of the seat body and are spaced along the width direction of the seat body, and the two protrusions are clamped on the two outer sides of the side walls of the card slots respectively.

9. A relay according to claim 1, wherein: The seat body is provided with a mounting cavity, the magnetic circuit assembly is arranged in the mounting cavity, and the contact assembly is located outside the mounting cavity; the shell is provided with a baffle extending along the height direction of the seat body on the side opposite to the seat body, and the baffle is located on the outer periphery of the side wall adjacent to the mounting cavity and the contact assembly.

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