Moving spring assembly and relay

Abstract

Provided in the present disclosure are a moving spring assembly and a relay. The moving spring assembly comprises a moving spring lead-out pin, a contact moving spring piece and a moving contact, wherein a contact section of the contact moving spring piece is forked to form a first forked portion and a second forked portion that are spaced apart along the width of the contact moving spring piece; the end of the first forked portion forms a pushing portion; the moving contact is arranged on the second forked portion and is offset from the center line of a contact end in the direction away from the first forked portion; and the end of the second forked portion forms a pulling portion. When fitted into the relay, the moving spring assembly enables the flexible closing and rigid breaking effect between contacts, ensuring reliable contact operation performance while achieving a small product size.

Description

Moving spring assembly and relay

[0001] The present disclosure claims priority to Chinese patent application No. 202421739799.1, filed on July 22, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of relays, and in particular to a moving spring assembly and a relay. BACKGROUND

[0003] A relay is an electric control device which brings about a predetermined step change in an electric output circuit when a change in an input quantity (excitation quantity) reaches a prescribed requirement. The relay has a control system (also called an input circuit) and a controlled system (also called an output circuit).

[0004] The relay generally includes a magnetic circuit portion and a contact portion, and the magnetic circuit portion drives a moving spring of the contact portion to perform opening and closing operations. In some relays, a plunger assembly of the magnetic circuit portion is connected to the moving spring by a pusher, and the pusher is assembled with the moving spring so that the moving spring is directly provided on the pusher. Although the basic opening and closing operations can be achieved, the moving contact and the stationary contact are rigidly closed, the vibration is large, and the moving contact is prone to bounce, which increases the generation of arc and is prone to ablate the contact. SUMMARY

[0005] To this end, the present disclosure provides a moving spring assembly and a relay to solve the above problems.

[0006] To achieve the above object, the technical solutions provided by the present disclosure are as follows:

[0007] A moving spring assembly includes a moving spring lead-out leg, a contact moving spring piece fixed on the moving spring lead-out leg, and a moving contact provided on the contact moving spring piece. A part of the contact moving spring piece away from the moving spring lead-out leg is defined as a contact section, and the contact section of the contact moving spring piece is bifurcated to form a first bifurcated part and a second bifurcated part spaced apart along the width direction of the contact moving spring piece. The end of the first bifurcated part forms a pushing part. The moving contact is provided on the second bifurcated part and deviates from the center line position of the contact section in a direction away from the first bifurcated part. The end of the second bifurcated part forms a pulling part.

[0008] Further, the width of the second bifurcated part is greater than the width of the first bifurcated part.

[0009] A relay comprises a magnetic circuit part and a contact part, the contact part comprises a static spring assembly and a dynamic spring assembly, an armature assembly of the magnetic circuit part connects the dynamic spring assembly through a push card; the dynamic spring assembly is the dynamic spring assembly as described above; the static spring assembly comprises a static spring and a static contact point arranged on the static spring and corresponding to the dynamic contact point; the push card is provided with a push card slot and a clearance recess, the clearance recess has a first side wall facing away from the static spring assembly and a second side wall facing the static spring assembly; a pushing part of a contact dynamic spring blade is matched in the push card slot of the push card, a pulling part of the contact dynamic spring blade is matched in the clearance recess of the push card, the pulling part is close to the first side wall of the clearance recess and keeps a clearance distance from the second side wall; when the push card moves towards the closing direction, the closing action of the dynamic contact point on the second forked part is driven by pushing the pushing part of the first forked part; when the push card moves towards the opening direction, the opening action of the dynamic contact point is driven by pulling the pulling part on the second forked part through the first side wall of the clearance recess.

[0010] Further, in the width direction, the first forked part and the second forked part of the contact dynamic spring blade are arranged in alignment under the action of no external force; when the push card drives the dynamic spring assembly to complete the closing, the first forked part is deformed towards the static spring assembly under the driving of the push card, and the deformation position of the first forked part does not exceed the static spring assembly.

[0011] Further, it further comprises a base, the magnetic circuit part and the contact part are assembled on the base, the width direction of the contact dynamic spring blade is perpendicular to the base, so that the first forked part and the second forked part of the contact dynamic spring blade are distributed in an up-down manner.

[0012] Further, at least one side of the pushing part of the first forked part is laterally bent to form an arc-shaped segment for preventing debris.

[0013] Further, the number of the contact part is two groups, the two groups of contact parts are distributed on the left and right sides of the magnetic circuit part, the armature assembly of the magnetic circuit part connects the dynamic spring assemblies of the two groups of contact parts through the push card; the upper and lower sides of the pushing part of the first forked part are laterally bent to form arc-shaped segments for preventing debris; the pushing part of the first forked part is matched in the push card slot of the push card and forms a limit in the up-down direction.

[0014] It further comprises an auxiliary contact part, the auxiliary contact part is assembled on the base and forms a cooperation with the lower side of the push card; the armature assembly drives the auxiliary contact part synchronously through the push card to perform the closing and opening actions.

[0015] Further, the number of the contact spring pieces of the moving spring assembly is at least two, which are arranged in an up-down interval, and the second forked part of the contact section of the at least two contact spring pieces is below the first forked part; the static spring is provided with at least two static contacts to correspond to the dynamic contacts on the at least two contact spring pieces respectively; the push card is provided with at least two groups of push card slots and a recess to match the push part and the pull part of the at least two contact spring pieces respectively.

[0016] Further, the part of the contact spring piece fixed with the moving spring lead-out pin is defined as a fixed section, and the fixed sections of the at least two contact spring pieces are integrally connected.

[0017] Further, the part of the contact spring piece fixed with the moving spring lead-out pin is defined as a fixed section, and the fixed sections of the at least two contact spring pieces are integrally connected.

[0018] Further, the moving spring assembly further comprises a current-carrying spring piece, which is fixedly arranged on one side of the contact spring piece.

[0019] Further, the end of the current-carrying spring piece is bent and abuts on the push card.

[0020] The technical scheme provided by the present disclosure has the following beneficial effects:

[0021] The contact section of the contact spring piece is forked, forming a first forked part and a second forked part arranged in an interval along the width direction of the contact spring piece, the end of the first forked part forms a push part, and the end of the second forked part forms a pull part; when the push card moves in the closing direction, the push part of the first forked part is pushed to drive the dynamic contact on the second forked part to perform a closing action, realizing flexible closing and reducing vibration and bounce of the dynamic contact; when the push card moves in the opening direction, the first side wall of the recess pulls the pull part on the second forked part to drive the dynamic contact to perform an opening action, realizing rigid breaking between the contacts and ensuring reliable breaking; and ensuring reliable performance of the contact action.

[0022] Meanwhile, the dynamic contact is arranged on the second forked part and deviates from the center line of the contact section in a direction away from the first forked part, so that the overall width of the contact spring piece can be reduced while ensuring the reliability of the first forked part, realizing small size of the product while ensuring reliable performance of the contact action. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 shows a structure schematic diagram of a moving spring assembly in an embodiment.

[0024] Fig. 2 shows a schematic view of the upper and lower contact spring pieces of the moving spring assembly in the embodiment;

[0025] Fig. 3 shows a schematic view of the assembly structure of the moving spring assembly and the push card in the embodiment;

[0026] Fig. 4 shows a schematic view of the enlarged area A in Fig. 3;

[0027] Fig. 5 shows a schematic view of the partial structure of the relay in the embodiment;

[0028] Fig. 6 shows a schematic view of the enlarged area B in Fig. 5;

[0029] Fig. 7 shows a schematic view of the top view of the partial structure of the relay in the embodiment;

[0030] Fig. 8 shows a schematic view of the enlarged area C in Fig. 7;

[0031] Fig. 9 shows a schematic view of the partial structure of the relay in the embodiment when tripped;

[0032] Fig. 10 shows a schematic view of the front view of the relay in the embodiment. DETAILED DESCRIPTION

[0033] To further illustrate the embodiments, the disclosure is provided with the accompanying drawings. These drawings are part of the disclosure, which mainly serve to illustrate the embodiments, and can be used to explain the operating principles of the embodiments in conjunction with the related description of the specification. Those of ordinary skill in the art should understand other possible implementations and advantages of the disclosure in conjunction with these. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] The present disclosure will be further described in conjunction with the drawings and specific embodiments.

[0036] Embodiment One

[0037] Referring to FIG. 1, FIG. 2, the dynamic spring assembly 10 provided by the embodiment includes a dynamic spring lead 11, a contact dynamic spring piece 12 fixed on the dynamic spring lead 11, and a dynamic contact 15 arranged on the contact dynamic spring piece 12. Specifically, as shown in FIG. 1, the dynamic spring lead 11 is vertically arranged along the up-down direction, the contact dynamic spring piece 12 is fixed on the dynamic spring lead 11 and extends horizontally along the left-right direction, the part of the contact dynamic spring piece 12 close to the dynamic spring lead 11 is defined as a fixed segment 122, and the part of the contact dynamic spring piece 12 away from the dynamic spring lead 11 is defined as a contact segment 121. As shown in FIG. 1, the left segment of the contact dynamic spring piece 12 is the fixed segment 122, and the right segment is the contact segment 121. The contact segment 121 of the contact dynamic spring piece 11 is bifurcated to form a first bifurcated part 13 and a second bifurcated part 14 which are arranged in the width direction of the contact dynamic spring piece 12 and spaced apart from each other, and the second bifurcated part 14 is below the first bifurcated part 13, wherein the width direction is consistent with the up-down direction shown in FIG. 1.

[0038] Specifically, the end of the first bifurcated part 13 forms a pushing part 131, the dynamic contact 15 is arranged on the second bifurcated part 14 and deviates from the center line position a of the contact segment 121 in the direction away from the first bifurcated part 13 (i.e. downward), and the end of the second bifurcated part 14 forms a pulling part 141.

[0039] Further, the width of the second bifurcated part 14 is greater than the width of the first bifurcated part 13, so as to ensure that the second bifurcated part 14 has sufficient size to arrange the dynamic contact 15.

[0040] Continuing to refer to FIG. 3 to FIG. 10, the embodiment further provides a relay, which includes a base 30, a magnetic circuit part 40 and a contact part 1 assembled on the base 30, the contact part 1 includes a static spring assembly 50 and a dynamic spring assembly, the armature assembly 41 of the magnetic circuit part 40 is connected to the dynamic spring assembly through a pushing card 20, wherein the dynamic spring assembly is the dynamic spring assembly 10 described above, and the dynamic spring assembly 10 is vertically inserted into the base 30, i.e. the width direction of the contact dynamic spring piece 12 is perpendicular to the base 30, so that the first bifurcated part 13 and the second bifurcated part 14 of the contact dynamic spring piece 12 are distributed in the up-down direction.

[0041] Referring to FIG. 3 and FIG. 4, the static spring assembly 50 comprises a static spring 52 and a static contact 51 arranged on the static spring 52 and corresponding to the moving contact 15; the push card 20 is provided with a push card slot 21 and a let-in recess 22, the let-in recess 22 has a first side wall 221 facing away from the static spring assembly 50 and a second side wall 222 facing the static spring assembly 50; the push part 131 of the contact moving spring piece 12 is fitted in the push card slot 21 of the push card 20, the pull part 141 of the contact moving spring piece 12 is fitted in the let-in recess 22 of the push card 20, the pull part 141 is close to the first side wall 221 of the let-in recess 22 and keeps a let-in spacing with the second side wall 222; the pull part 141 close to the first side wall 221 of the let-in recess 22 can be directly attached to the first side wall 221 or keep a small gap to ensure that the push card 20 pulls the pull part 141 when performing the opening operation; the pull part 141 keeps a let-in spacing with the second side wall 222, which means keeping a large gap so that the pull part 141 and the second side wall 222 will not contact when the push card 20 performs the opening and closing operation.

[0042] Specifically, when the push card 20 moves towards the closing direction, the push part 131 of the first forked part 13 is pushed to drive the moving contact 15 on the second forked part 14 to perform the closing operation; in this way, the push card 20 will not directly act on the second forked part 14, and a flexible closing is formed between the moving contact 15 and the static contact 51; which plays a good damping effect, reduces the moving contact rebound, avoids the aggravation of the arc burning on the contact, and causes the problems of large contact resistance, silver layer loss, etc. When the push card 20 moves towards the opening direction, the first side wall 221 of the let-in recess 22 pulls the pull part 141 on the second forked part 14 to drive the moving contact 15 to perform the opening operation. The rigid breaking between the contacts is realized to ensure the reliable breaking; and the reliable performance of the contact action is ensured.

[0043] Referring to Fig. 7, further, the number of the contact spring pieces 12 is two, which are spaced apart upward and downward, and the two contact spring pieces 12 are both arranged with the first forked part 13 above the second forked part 14, so that the spacing of the two upper and lower moving contacts 15 can be ensured without increasing the spacing of the two contact spring pieces 12, which is conducive to reducing the height of the moving spring assembly 10. Meanwhile, the second forked part 14 of each of the two contact spring pieces 12 is provided with a moving contact 15, and the moving contact 15 deviates from the center line position a (see Fig. 1) of the contact section 121 in a direction away from the first forked part 13 (i.e. downward), and the static spring 52 is provided with two static contacts 51 to correspond to the moving contacts 15 on the upper and lower contact spring pieces 12 respectively; the push card 20 is provided with two groups of push card slots 21 and displacement recesses 22 to cooperate with the pushing parts 131 and pulling parts 141 of the two contact spring pieces 12 respectively; in this embodiment, the two groups of push card slots 21 and displacement recesses 22 are not the same structure, as long as they can complete the above-mentioned driving action. In this way, the push card 20 can synchronously drive the two contact spring pieces 12 to act. And arranging the second forked part 14 with the moving contact 15 below the first forked part 13 can reduce the height of the moving contact 15, and the height of the static contact 51 on the static spring 52 can also be reduced, thereby synchronously reducing the height of the static spring 52, i.e. the height of the static spring 52 does not need to be set too high, which can meet the requirement of small size while reducing the material of the static spring 52 and saving cost.

[0044] Referring to Figs. 1 and 2, since the width of the contact section 121 of the contact spring piece 12 needs to be kept within a certain size, in order to further reduce the overall height of the moving spring assembly 10, the width of the fixed section 122 of the contact spring piece 12 is designed to be smaller than that of the contact section 121; wherein the fixed section 122 of the upper contact spring piece 12 is flush with the upper side of the contact section 121; the contact section 121 protrudes downward; and the upper side of the lower contact spring piece 12 is always kept at an equal spacing with the lower side of the upper contact spring piece 12, and the upper side of the fixed section 122 of the lower contact spring piece 12 is higher than the upper side of the contact section 121; in this way, the fixed sections 122 of the upper and lower contact spring pieces 12 can be close to each other, and the height of the moving spring lead-out pin 11 also does not need to be set too high; and the contact section 121 of the lower contact spring piece 12 extends downward; meanwhile, in order to avoid interference between the contact section 121 of the lower contact spring piece 12 and the moving spring lead-out pin 11, the moving spring lead-out pin 11 is provided with a displacement recess 111, which is a beveling section as shown in Fig. 1, to displace the contact section 121 of the lower contact spring piece 12; in this way, the overall height of the moving spring assembly 10 can be reduced.

[0045] Further, as shown in FIG. 2, in the embodiment, the fixed sections 122 of the two contact moving spring pieces 12 are integrally connected; thus, the two contact moving spring pieces 12 can be regarded as structures cut from the same piece of material, so that the positions of the upper and lower contact moving spring pieces 12 are fixed and cannot deviate due to assembly; and the reliability is better.

[0046] Through the above arrangement of the moving spring assembly 10, the overall height of the moving spring assembly 10 can be reduced, and when applied to a relay, the overall height of the relay can be well reduced to meet the design concept of small size and compactness.

[0047] Further, in the embodiment, in the width direction, the first bifurcated section 13 and the second bifurcated section 14 of the contact moving spring piece 12 are arranged in alignment under the action of no external force; thus, when assembled, the contact moving spring piece 12 is a straight piece with uniform thickness, which is conducive to reducing the assembly difficulty and improving the assembly efficiency. When the driving card 20 drives the moving spring assembly 10 to complete the closing, as shown in FIG. 8, the first bifurcated section 13 is deformed towards the static spring assembly 50 under the driving of the driving card 20, and the deformation position of the first bifurcated section 13 does not exceed the static spring assembly 50. Thus, the deformation position of the first bifurcated section 13 is located within the range formed by the static spring assembly 50 and the moving contact 15, without occupying other spaces; the compactness of the movement direction of the driving card 20 is ensured, and the product volume is conveniently compressed.

[0048] Referring to FIGS. 5 and 6, the number of the contact portions 1 is two groups, which are distributed on the left and right sides of the magnetic circuit portion 40. The armature assembly 41 of the magnetic circuit portion 40 simultaneously connects the moving spring assemblies 10 of the two groups of contact portions 1 through the driving card 20. Meanwhile, the left and right moving spring assemblies 10 realize the up-down direction limiting of the driving card 20. Specifically, the upper and lower sides of the pushing part 131 of the first bifurcated section 13 are laterally bent to form the anti-scrap arc-shaped sections 132. The pushing part 131 of the first bifurcated section 13 is fitted in the driving card slot 21 of the driving card 20 and forms the up-down direction limiting. When pushed, the arc-shaped sections 132 are in contact with the driving card 20, which can effectively avoid the generation of scrap and ensure the stability of the product.

[0049] As shown in FIG. 10, the relay further includes an auxiliary contact portion 60, which is assembled on the base 30 and cooperates with the lower side of the driving card 20. The armature assembly 41 synchronously drives the auxiliary contact portion 60 to perform the opening and closing action through the driving card 20, and the auxiliary contact portion 60 is used to indicate the opening and closing state of the contact portion 1. The driving card 20 horizontally translates along the left-right direction, and the auxiliary contact portion 60 is arranged below the driving card 20, so that the structure is more compact.

[0050] Referring to Fig. 8, further, in order to ensure the current carrying capacity of the moving spring assembly 10, in the embodiment, the moving spring assembly 10 further comprises a current carrying spring piece 16, which is fixedly attached to one side of the contact moving spring piece 12; specifically, the side of the contact moving spring piece 12 away from the moving contact 15. As in the embodiment, the upper and lower contact moving spring pieces 12 are both equipped with the current carrying spring piece 16; so as to increase the current carrying capacity of the moving spring assembly 10; and the current carrying spring piece 16 is fixedly attached to the side of the contact moving spring piece 12 away from the moving contact 15, which does not affect the action of the contact moving spring piece 12. Of course, the current carrying spring piece 16 can also be on the same side as the moving contact 15. In this way, the current carrying spring piece 16 can increase the displacement hole to allow the displacement of the moving contact 15; so as to avoid interference with the moving contact 15.

[0051] More specifically, in the embodiment, the end of the current carrying spring piece 16 is bent to form a bent portion 161, which abuts against the push card 20. In this way, the current carrying spring piece 16 can also effectively avoid scratching other components, and has a good positioning effect on the push card 20.

[0052] Of course, in other embodiments, the moving spring assembly 10 has sufficient current carrying capacity, and the current carrying spring piece 16 can also not be provided.

[0053] Embodiment Two

[0054] The moving spring assembly provided in the embodiment is substantially the same as the structure of embodiment one, except that in the embodiment, the contact moving spring piece 12 fixed to the moving spring lead-out pin 11 is only one, which is equivalent to removing the lower contact moving spring piece 12 based on the structure of embodiment one; in this way, the height of the moving spring assembly 10 can be further reduced; however, compared with the structure of embodiment one, the current carrying capacity of the moving spring assembly 10 can be reduced, which is more suitable for use in low power relays.

[0055] The embodiment also provides a relay, which is substantially the same as the structure of the relay of embodiment one, except that the moving spring assembly in embodiment two is used.

[0056] Of course, in other embodiments, the number of contact moving spring pieces 12 of the moving spring assembly 10 can be increased or decreased according to actual conditions, such as being increased to three or more than three.

[0057] Although the present disclosure is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present disclosure in form and detail without departing from the spirit and scope of the present disclosure defined by the appended claims, which are all within the protection scope of the present disclosure.

Claims

1. A movable spring assembly, comprising a movable spring lead, a contact movable spring sheet fixed to the movable spring lead, and a movable contact disposed on the contact movable spring sheet; the portion of the contact movable spring sheet away from the movable spring lead is defined as the contact segment, characterized in that: The contact segment of the contact spring is bifurcated to form a first bifurcated portion and a second bifurcated portion spaced apart along the width direction of the contact spring. The end of the first bifurcated portion forms a pushing portion. The moving contact is disposed on the second bifurcated portion and is offset from the centerline of the contact segment in a direction away from the first bifurcated portion. The end of the second bifurcated portion forms a pulling portion.

2. The moving spring assembly according to claim 1, characterized in that: The width of the second fork is greater than the width of the first fork.

3. A relay comprising a magnetic circuit portion and a contact portion, the contact portion comprising a stationary spring assembly and a moving spring assembly, the armature assembly of the magnetic circuit portion being connected to the moving spring assembly via a push-lock; characterized in that: The moving spring assembly is the moving spring assembly as described in claim 1 or 2 above; the stationary spring assembly includes a stationary spring and a stationary contact disposed on the stationary spring and corresponding to the moving contact; the push card is provided with a push card groove and a clearance recess, the clearance recess having a first sidewall facing away from the stationary spring assembly and a second sidewall facing the stationary spring assembly; the pushing part of the contact moving spring is engaged in the push card groove of the push card, the pulling part of the contact moving spring is engaged in the clearance recess of the push card, the pulling part is close to the first sidewall of the clearance recess and maintains a clearance distance with the second sidewall; when the push card moves in the closing direction, it drives the moving contact on the second branch to perform a closing action by pushing the pushing part of the first branch; when the push card moves in the opening direction, it drives the moving contact to perform an opening action by pulling the pulling part on the second branch through the first sidewall of the clearance recess.

4. The relay according to claim 3, characterized in that: In the width direction, the first and second forked portions of the contact spring are aligned with each other without external force; when the push card drives the spring assembly to complete the closing, the first forked portion is driven by the push card to deform toward the stationary spring assembly, and the deformation position of the first forked portion does not exceed the stationary spring assembly.

5. The relay according to claim 3, characterized in that: It also includes a base, on which the magnetic circuit part and the contact part are both mounted. The width direction of the contact moving spring is perpendicular to the base, so that the first and second bifurcations of the contact moving spring are distributed vertically.

6. The relay according to claim 5, characterized in that: At least one side of the pushing part of the first forked portion is laterally bent to form an arc-shaped segment that prevents scratches.

7. The relay according to claim 6, characterized in that: The number of contact parts is two sets, and the two sets of contact parts are distributed on the left and right sides of the magnetic circuit part. The armature assembly of the magnetic circuit part is connected to the moving spring assembly of the two sets of contact parts simultaneously through the push card. The upper and lower sides of the push part of the first fork part are laterally bent to form an arc-shaped segment to prevent scratches. The push part of the first fork part is fitted into the push card slot of the push card and forms a limit in the upper and lower direction.

8. The relay according to claim 7, characterized in that: It also includes an auxiliary contact part, which is mounted on the base and cooperates with the lower side of the push card; the armature assembly drives the auxiliary contact part to perform opening and closing actions through the push card.

9. The relay according to claim 5, characterized in that: The moving spring assembly has at least two contacting moving springs, which are arranged at an interval between the upper and lower parts. The second bifurcation of the contact section of the at least two contacting moving springs is located below the first bifurcation. The stationary spring is provided with at least two stationary contacts, which correspond to the moving contacts on the at least two contacting moving springs respectively. The push card is provided with at least two sets of push card slots and clearance recesses, which respectively cooperate with the push and pull parts of the at least two contacting moving springs.

10. The relay according to claim 9, characterized in that: The portion of the contact spring that is fixed to the spring lead is defined as the fixed section; the fixed sections of at least two contact springs are integrally connected.

11. The relay according to claim 9, characterized in that: The portion of the contact spring that is fixed to the spring lead is defined as the fixed section; the width of the fixed section of the contact spring is smaller than that of the contact section; the upper sides of the fixed section and the contact section of the upper contact spring are flush; the lower side of the contact section of the contact spring protrudes from the fixed section; a clearance notch is provided on the spring lead to allow space for the contact section of the lower contact spring.

12. The relay according to claim 3 or 9, characterized in that: The moving spring assembly also includes a current-carrying spring sheet, which is fixedly attached to the side that contacts the moving spring sheet.

13. The relay according to claim 12, characterized in that: The end of the current-carrying spring is bent and abuts against the push card.

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