Relay

Abstract

The invention discloses a relay, which comprises a shell, a magnetic circuit part, a contact part and a pushing part, and is characterized in that the magnetic circuit part is mounted on the shell and comprises at least two magnetic circuit units; the contact part is arranged on the shell and comprises a movable spring group, a static contact group and a load terminal; the movable spring groups and the static contact groups are arranged corresponding to the magnetic circuit unit, and each movable spring group is provided with a movable contact group corresponding to the static contact group; each movable spring group and the corresponding static contact group jointly form a switch; the movable spring group and the static contact group in each switch are respectively connected with different load terminals, and at least one load terminal is shared by at least two switches and forms a common terminal; and the pushing part comprises a pushing piece accommodated in the shell, the pushing piece and the magnetic circuit unit are correspondingly arranged, and the pushing piece is driven by the corresponding magnetic circuit part to drive the corresponding movable spring group, so that the movable contact group and the corresponding static contact group are closed or opened. By adopting the technical scheme, the occupied space is smaller than that in the prior art for realizing the functions of more than two switches.

Description

Technical Field

[0001] The present application relates to the field of relays. Background Art

[0002] In the prior art, relays are used to control the on and off of external circuits. Generally, a relay is equivalent to a controlled switch in the circuit. With the further development of electronic and electrical applications, more than two switches are often concentrated in a relatively small area, which requires the use of more than two relays. However, due to factors such as relay packaging, in order to achieve more than two switch functions, more than two independent relays need to be set up accordingly, which requires a large space. Summary of the invention

[0003] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology and to provide a relay which, compared with the prior art, occupies a smaller space when realizing more than two switching functions.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The first technical scheme relates to a relay, which includes a housing; a magnetic circuit part, which is attached to the housing and includes at least two magnetic circuit units; and a relay, which is attached to the housing and includes a movable spring group, a static contact group and a load terminal; the movable spring group and the static contact group are both arranged corresponding to the magnetic circuit units, and each movable spring group is provided with a movable contact group corresponding to the static contact group; each movable spring group and the corresponding static contact group jointly form a switch; the movable spring group and the static contact group in each switch are respectively connected to different load terminals, and at least one load terminal is shared by at least two switches and forms a common terminal; the movable spring group is driven by the corresponding magnetic circuit unit to close or open the movable contact group and the corresponding static contact group.

[0006] The second technical solution is based on the first technical solution, and further includes a pushing portion, wherein the pushing portion includes a pushing member accommodated in the shell, the pushing member is arranged corresponding to the magnetic circuit unit, and the pushing member is driven by the corresponding magnetic circuit portion to drive the corresponding dynamic spring group.

[0007] The third technical solution is based on the first or second technical solution, wherein at least one load terminal is simultaneously connected to at least two static contact groups or at least two dynamic spring groups to form the common terminal; or, at least one load terminal is simultaneously connected to the dynamic spring group in at least one switch and the static contact group in at least one other switch to form the common terminal.

[0008] The fourth technical solution is based on the second technical solution, wherein each magnetic circuit unit is arranged along the Y-axis direction, each magnetic circuit unit includes a coil assembly and an armature assembly, the coil assembly is fixed relative to the shell and includes a coil winding and a coil terminal electrically connected to the coil winding, the winding axis of the coil winding extends along the Z-axis direction, and the armature assembly rotates relative to the coil assembly around a rotation axis extending along the Y-axis direction; each coil winding and each armature assembly are accommodated in the shell, and the coil terminal extends downward along the Z-axis direction; the contact part and the magnetic circuit part are arranged along the X-axis direction; each switch is accommodated in the shell, and each load terminal extends downward along the Z-axis direction; each pusher is arranged along the Y-axis direction, and the pusher is driven by the corresponding armature assembly to move along the X-axis direction or the Z-axis direction to drive the corresponding moving contact group to close or open with the corresponding static contact group along the movement direction of the pushing member.

[0009] The fifth technical solution is based on the first or second or fourth technical solution, wherein each dynamic spring group includes at least one dynamic spring, each dynamic spring is provided with at least one dynamic contact, all dynamic contacts in the same dynamic spring group form a dynamic contact group, and the static contact group corresponding to the dynamic contact group is provided with static contacts corresponding to all the dynamic contacts in the dynamic contact group.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the dynamic spring group includes at least two dynamic springs, each dynamic spring is provided with a dynamic contact, the dynamic springs in the same dynamic spring group are arranged along the Y-axis direction, and the dynamic contacts in the same dynamic spring group are arranged along the Y-axis direction.

[0011] The seventh technical solution is based on the fifth technical solution, wherein the dynamic spring also includes a dynamic spring body and an elastic member, the dynamic spring body is provided with a fixed end and a moving end, the fixed end is connected to the load terminal, and the moving end is away from the fixed end along the extension direction of the dynamic spring body, the moving contact is fixedly connected to the dynamic spring body and close to the moving end, one end of the elastic member is connected to the dynamic spring body, and the other end is suitable for being pushed by a pushing member; the pushing member drives the moving end to move by pushing the elastic member so that the moving contact is closed with the corresponding static contact, and drives the moving contact to disconnect with the corresponding static contact by pushing the moving end.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the elastic member is a compression spring, one end of the elastic member is connected to the dynamic spring body at the location of the dynamic contact, and the other end of the elastic member forms a gap along the movement direction of the dynamic pusher.

[0013] The ninth technical solution is based on the fourth technical solution, wherein the magnetic circuit unit also includes a support fixed relative to the coil assembly and located in the shell, the coil assembly also includes a coil frame, an iron core and a yoke, the coil winding is wound around the coil frame, the coil terminal is fixed to the coil frame, the iron core extends along the Z-axis direction and is inserted into the coil frame, the number of yokes in each magnetic circuit unit is two, the two yokes are arranged along the Z-axis direction, one end of each yoke is connected to the iron core, and the other end forms a magnetic drive end, the two magnetic drive ends drive the armature assembly to rotate by converting the magnetic polarity, the number of support members in each magnetic circuit unit is two, the two support members are respectively located on both sides of the coil assembly along the Y-axis direction and are used to support the armature assembly.

[0014] The tenth technical scheme is based on the ninth technical scheme, wherein each magnetic drive end is provided with protrusions on both sides along the Y-axis direction, and each support member is provided with two connecting holes along the Z-axis direction suitable for correspondingly plugging and matching with the two protrusions on the same side along the Y-axis direction; each armature assembly includes an armature, a main body, a convex shaft and a swinging part fixed to each other; the number of armatures in each armature assembly is two, and the extension directions of the two armatures are parallel to each other, each armature part is located in the main body, and the two ends of each armature extend out of the main body respectively and form a suction part suitable for being attracted with the corresponding magnetic drive end, the number of convex shafts in each armature assembly is two and extend away from each other from both sides of the main body along the Y-axis direction, and the swinging part extends out of the main body perpendicular to the Y-axis direction to match with the pushing member; each support member is provided with an axial hole rotatably matched with the corresponding convex shaft, and the axial hole is located between the two connecting holes along the Z-axis direction.

[0015] The eleventh technical solution is based on the tenth technical solution, wherein the armature assembly also includes a permanent magnet disposed in the main body, and the two armatures are respectively connected to the two magnetic poles of the permanent magnet; the main body, the convex shaft and the swinging part are all made of plastic material, and the main body, the convex shaft, the swinging part, the armature and the permanent magnet are insert-molded as one piece.

[0016] The twelfth technical solution is based on the tenth technical solution, wherein the pushing member moves along the Z-axis direction, the extending direction of the swinging portion is perpendicular to the extending direction of the armature, and the dynamic spring assembly extends along the X-axis direction.

[0017] The thirteenth technical solution is based on the twelfth technical solution, wherein the pushing member is provided with a first matching hole and a second matching hole along the Z-axis direction, the second matching hole is for the movable spring group to extend toward the winding axis along the X-axis direction, and the first matching hole is for the swinging part to extend in a direction opposite to the direction in which the movable spring group extends into the second matching hole; the pushing member is provided with sliding matching parts on both sides along the Y-axis direction, and the shell is provided with two sliding grooves that are respectively slidably matched with the corresponding sliding matching parts along the Z-axis direction.

[0018] The fourteenth technical solution is based on the twelfth technical solution, wherein the moving contact group is closed with the corresponding static contact group downward along the Z-axis direction; on the first projection plane remaining in the Z-axis direction, the projection of the sliding fitting part and the projection of at least one load terminal at least partially overlap; along the Z-axis direction, the first intersection is located above the rotation axis, the first intersection is the intersection of the first plane and the first straight line, the first plane is a plane passing through the rotation axis and parallel to the extension direction of the armature, and the first straight line is a straight line perpendicular to the first plane made through the contact point between the swinging part and the pushing member when the moving contact group is closed with the corresponding static contact group.

[0019] The fifteenth technical solution is based on the thirteenth or fourteenth technical solution, wherein all positions where the pushing member contacts the swinging portion are closer to the rotation axis than the second matching hole along the X-axis direction.

[0020] The sixteenth technical solution is based on the fifteenth technical solution, wherein the first mating hole is provided with a first abutting portion suitable for being abutted upward by the swinging portion and a second abutting portion suitable for being abutted downward by the swinging portion on both sides along the Z-axis direction; the first abutting portion and the second abutting portion are both turned outward from the hole wall of the first mating hole along the X-axis direction; the surfaces of the first abutting portion and the second abutting portion suitable for contacting with the swinging portion are both smooth curved surfaces.

[0021] The seventeenth technical solution is based on the sixteenth technical solution, wherein the portion of the pushing member between the first abutment portion and the second abutment portion is bent in an upward direction toward a direction closer to the rotation axis, the outward turning directions of the first abutment portion and the second abutment portion diverge from each other, and the first abutment portion is outward turned toward a direction farther away from the rotation axis.

[0022] The eighteenth technical solution is based on the tenth technical solution, wherein the pushing member moves along the X-axis direction, the extending direction of the swinging portion is parallel to the extending direction of the armature, and the dynamic spring assembly extends along the Z-axis direction.

[0023] The nineteenth technical solution is based on the eighteenth technical solution, wherein the pushing member is provided with a first matching hole along the X-axis direction for the swinging part to extend along the Z-axis direction and a second matching hole for the moving spring group to extend along the Z-axis direction.

[0024] The twentieth technical solution is based on the thirteenth technical solution, wherein the shell includes a base and a cover body, the magnetic circuit part, the contact part and the pushing part are all attached to the base, each coil terminal and each load terminal penetrates the base downward along the Z-axis direction, the cover body is downwardly covered on the base along the Z-axis direction and fixedly connected to the base; the slide groove is arranged on the base, and the base is provided with a slot corresponding to the support member, and the support member is inserted into the corresponding slot downward along the Z-axis direction.

[0025] The twenty-first technical solution is based on the twentieth technical solution, wherein the base includes a first seat body and a second seat body, the coil assembly is fixedly connected to the first seat body along the Z-axis direction, each coil terminal passes through the first seat body along the Z-axis direction, the slide groove and the slot are arranged on the first seat body, and each load terminal passes through the second seat body along the Z-axis direction; the first seat body, the magnetic circuit part and the pushing part together form a first assembly, the second seat body and the contact part together form a second assembly, the first assembly and the second assembly are plugged in along the X-axis direction, after being plugged in place, the dynamic spring group extends into the second matching hole along the X-axis direction, the first seat body and the second seat body are snap-fitted along the X-axis direction, and the first assembly and the second assembly are limitedly fitted to each other along the Y-axis direction and the Z-axis direction.

[0026] The twenty-second technical solution is based on the twenty-first technical solution, wherein the first seat body is provided with a first limit block, a second limit block and a first clamping block along the X-axis direction toward the second seat body, the second seat body is provided with a second clamping block along the X-axis direction toward the first seat body, the first limit block is located above the second limit block along the Z-axis direction, after the first assembly and the second assembly are plugged into place along the X-axis direction, the first clamping block and the second clamping block are clamped and matched along the X-axis direction, at least one of the load terminals is inserted between the first limit block and the second limit block along the X-axis direction, and is limited and matched with the first limit block and the second limit block along the Z-axis direction.

[0027] The twenty-third technical solution is based on the twenty-second technical solution, wherein the load terminal is gap-matched with the first limit block and the second limit block along the Z-axis direction, and the length of the second limit block matching with the load terminal along the X-axis direction is less than the length of the first limit block matching with the load terminal along the X-axis direction, so that when the first assembly or the second assembly is subjected to a downward force along the Z-axis direction, the end of the second assembly away from the first assembly along the X-axis direction is allowed to deflect downward relative to the first assembly until the second clamping block is disengaged from the first clamping block along the X-axis direction.

[0028] The twenty-fourth technical solution is based on the twenty-second technical solution, wherein the number of the second limit blocks is at least two, each second limit block is arranged along the Y-axis direction, and a first interval is formed between at least two adjacent second limit blocks along the Y-axis direction, and the second seat body is provided with an insert block suitable for extending into the first interval along the X-axis direction. After the second assembly is plugged into place with the first assembly along the X-axis direction, the insert block cooperates with the corresponding two second limit blocks in a limiting manner along the Y-axis direction; the two second limit blocks forming the first interval between each other are provided with the first clamping block on the side adjacent to each other, and the second clamping blocks corresponding to the first clamping block are provided on both sides of the insert block along the Y-axis direction.

[0029] The twenty-fifth technical solution is based on the twentieth technical solution, wherein the base, the contact part and the pushing part together form a third combination, and each magnetic circuit unit is plugged into and matched with the base along the X-axis direction. After the magnetic circuit unit is plugged into place, the swinging part extends into the first matching hole away from the rotation axis, and the cover body is arranged outside the coil frame along the X-axis direction to prevent the magnetic circuit unit from separating from the third combination along the X-axis direction.

[0030] The twenty-sixth technical scheme is based on the twentieth technical scheme, wherein the base includes a third seat body and a fourth seat body, the coil assembly is fixedly connected to the third seat body along the Z-axis direction, each coil terminal passes through the third seat body along the Z-axis direction, the slot is arranged on the third seat body, the slide groove is arranged on the fourth seat body, and each load terminal passes through the fourth seat body along the Z-axis direction; the third seat body and the magnetic circuit part together form a fourth assembly, the fourth seat body and the pushing part and the contact part together form a fifth assembly, the fourth assembly and the fifth assembly are plugged in along the X-axis direction, after being plugged in place, the swinging part extends into the first matching hole along the X-axis direction, the third seat body and the fourth seat body are snap-fitted along the X-axis direction, and the fourth assembly and the fifth assembly are limitedly fitted to each other along the Y-axis direction and the Z-axis direction.

[0031] The twenty-seventh technical scheme is based on the twentieth technical scheme, wherein the base includes a fifth seat body, a sixth seat body and a seventh seat body, the coil assembly is fixedly connected to the fifth seat body along the Z-axis direction, each coil terminal passes through the fifth seat body along the Z-axis direction, the slot is arranged on the fifth seat body, the slide groove is arranged on the sixth seat body, and each load terminal passes through the seventh seat body along the Z-axis direction; the fifth seat body and the magnetic circuit part together form a sixth assembly; the sixth seat body and the pushing part together form a seventh assembly; the seventh seat body and the magnetic circuit part together form an eighth assembly; the sixth assembly, the seventh assembly and the eighth assembly are plugged in along the X-axis direction, and after being plugged in place, the movable spring group extends into the second matching hole along the X-axis direction, and the swinging part extends into the first matching hole along the X-axis direction, the fifth seat body and the sixth seat body are snap-fitted and the sixth assembly and the seventh assembly are limit-fitted with each other along the Y-axis direction and the Z-axis direction, the sixth seat body and the seventh seat body are snap-fitted and the seventh assembly and the eighth assembly are limit-fitted with each other along the Y-axis direction and the Z-axis direction.

[0032] The twenty-eighth technical solution is based on the fourth technical solution, wherein the portion of the pushing member that is suitable for contacting the dynamic spring assembly is made of metal.

[0033] The twenty-ninth technical solution is based on the twenty-eighth technical solution, wherein the pushing member is made of metal.

[0034] The thirtieth technical solution is based on the twenty-ninth technical solution, wherein the pushing member is a stainless steel sheet metal part or an aluminum casting or an aluminum alloy casting.

[0035] The thirty-first technical solution is based on the twenty-eighth technical solution, wherein the pushing member includes a base and a sliding fitting portion, the portion of the pushing member in contact with the movable spring group and the portion in contact with the armature assembly are both formed on the base, the base is made of metal, the sliding fitting portion is fixedly connected to both sides of the base along the Y-axis direction, and the sliding fitting portion is slidingly fitted with the shell along the movement direction of the pushing member; the sliding fitting portion is made of plastic material, and the sliding fitting portion is integrally formed with the base insert by injection molding.

[0036] The thirty-second technical solution is based on the thirty-first technical solution, wherein the substrate is a stainless steel sheet metal part or an aluminum casting, and the size of the sliding fitting part along the X-axis direction is greater than the thickness of the substrate along the X-axis direction.

[0037] The thirty-third technical solution is based on the fourth technical solution, wherein the number of the magnetic circuit units is two and the number of the load terminals is three.

[0038] The thirty-fourth technical solution is based on the thirty-third technical solution, wherein, among each load terminal, the other two load terminals except the common terminal are arranged along the Y-axis direction.

[0039] The thirty-fifth technical solution is based on the thirty-fourth technical solution, and the downwardly extending portion of the common terminal is located in the middle of the base along the Y-axis direction.

[0040] The thirty-sixth technical solution is based on the thirty-fourth technical solution, wherein the pushing member moves along the Z-axis direction, and the dynamic spring group extends along the X-axis direction; each load terminal is provided with a connecting portion perpendicular to the Z-axis direction, and the connecting portion is used to connect the static contact group and / or the dynamic spring group; the connecting portion of the common terminal is located above or below the connecting portions of the other two load terminals along the Z-axis direction.

[0041] The thirty-seventh technical solution is based on the thirty-sixth technical solution, wherein the downwardly extending portion of the common terminal is located in the middle of the base along the Y-axis direction; the connecting portion of the common terminal is provided with a first arm and a second arm, and the first arm and the second arm extend away from each other along the X-axis direction and are respectively arranged corresponding to two magnetic circuit units.

[0042] The thirty-eighth technical solution is based on the thirty-seventh technical solution, wherein the first arm and the second arm are located at the same position along the X-axis direction, the first arm and the second arm are both connected to the static contact group or are both connected to the moving spring group, and the positions of the first arm and the second arm along the X-axis direction are closer to the magnetic circuit part than the connection parts of the two other load terminals; or, the first arm and the second arm are respectively connected to the static contact group and the moving contact group; the first arm connected to the static contact group is closer to the magnetic circuit part along the X-axis direction.

[0043] Compared with the prior art, the above solution has the following beneficial effects:

[0044] In the first technical solution, the magnetic circuit part and the contact part are both attached to the housing, and the magnetic circuit part includes at least two magnetic circuit units, and the movable spring group, the static contact and the pusher are all arranged corresponding to the magnetic circuit unit. Therefore, at least two switches that can be independently controlled are encapsulated in a relay housing. Compared with the prior art, the material of the housing is saved, the packaging volume of the relay is reduced, and when more than two switch functions are realized, the space occupied is smaller than that of the prior art.

[0045] In the first technical solution, at least one load terminal is shared by at least two switches to form a common terminal. The common terminal reduces the number of load terminals, improves the integration of load terminals, and can further reduce space occupation and reduce costs. It can also be applied to most scenarios through the flexible connection between the load terminal and each dynamic spring group and the static contact group.

[0046] In the first technical solution, the common terminal is a load terminal, which can be electrically connected to an external circuit or not. When the external circuit is connected, at least two external circuits can be controlled through the common terminal, or a parallel relationship can be established, or a total circuit and branch control can be established; when the external circuit is not electrically connected, the common terminal becomes a component that bridges more than two switches, so that more than two switches form a series relationship; therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch is controlled separately, this series relationship or parallel relationship enables the two switches to form a logical relationship of "and" or "or", which can not only be used for simple logical calculations, but also for scenarios with higher requirements for safety and reliability, avoiding uncontrolled switches due to failure of a single functional part formed by a magnetic circuit unit, a pusher, a movable spring group, and a static contact group.

[0047] The third technical solution discloses three basic electrical connection relationships inside the relay, which can be selected according to customer needs, especially the loading method of the external circuit, making the relay more versatile.

[0048] In the fourth technical solution, each coil terminal and each load terminal extends downward along the Z-axis direction to facilitate electrical connection with the circuit board.

[0049] In the fifth technical solution, the winding axis of the coil winding extends along the Z-axis direction, which is consistent with the extension direction of each coil terminal and each load terminal, thereby reducing the board area occupied by the relay.

[0050] In the sixth technical solution, each magnetic circuit unit is arranged along the Y-axis direction, each movable spring group is arranged along the Y-axis direction, each pushing member is arranged along the Y-axis direction, and the magnetic circuit part and the contact part are arranged along the X-axis direction, so that each functional part is arranged perpendicular to the Y-axis direction, and each functional part is arranged along the Y-axis direction. The functional parts do not need to be staggered in space with each other, which reduces the structural complexity and reduces the difficulty of assembly.

[0051] In the sixth technical solution, the dynamic spring group includes at least two dynamic springs, which can reduce the total contact resistance between the dynamic contact and the static contact, reduce the heat generation, and reduce the power consumption.

[0052] In the sixth technical solution, each movable spring is provided with a movable contact. Compared with the solution in which the same movable spring is provided with multiple movable contacts, it can avoid that some movable contacts cannot be effectively closed with the static contacts when the movable spring moves, or it can avoid that some movable contacts cannot be subjected to uniform force when closing, thereby increasing the contact resistance.

[0053] In the seventh technical solution, by arranging an elastic member between the movable spring body and the pushing member, the pushing member can achieve an overtravel, and the movable contact can be closed with the static contact more reliably.

[0054] In the seventh technical solution, the pusher directly pushes the moving end of the moving spring body to drive the moving contact and the static contact to disconnect, and the breaking time is shorter, so the arc pulling time is shorter and the life of the relay is longer.

[0055] In the eighth technical solution, the elastic member adopts a compression spring connected to the dynamic spring body. Compared with the elastic member connected to the dynamic spring body in other ways or other forms of elastic members, the elastic member has stronger impact resistance and can prevent the elastic member from being offset relative to the dynamic spring body due to impact.

[0056] In the eighth technical solution, the elastic member and the dynamic spring body are connected to the position of the moving contact, so that the force of the elastic member during deformation can be more effectively transmitted to the moving contact, the moving contact can be more reliably closed with the static contact, and the load capacity of the relay is higher.

[0057] In the ninth technical solution, the two support members are fixed relative to the coil assembly and are respectively located on both sides of the coil assembly along the Y-axis direction, which can effectively support the armature assembly so that the armature assembly can rotate relative to the coil assembly.

[0058] In the tenth technical solution, the connection hole on the support member and the protrusion on the magnetic drive end are plugged and matched along the Y-axis direction, so that the support member can be more accurately positioned relative to the yoke. Since the support member is the movement reference of the armature assembly, when the armature assembly rotates relative to the coil assembly, the suction portion can be more accurately sucked with the magnetic drive end.

[0059] In the eleventh technical solution, the armature assembly also includes a permanent magnet, and the two armatures are respectively connected to the two magnetic pole surfaces of the permanent magnet, so that the relay has a magnetic holding function. The relay can be controlled to change and maintain the open or closed state only through a pulse electrical signal, saving electric energy.

[0060] In the eleventh technical solution, the main body, convex shaft, swing part, armature and permanent magnet insert are integrally formed by injection molding, the armature assembly is easier to manufacture and is less likely to cause loss of motion stroke due to tolerance accumulation.

[0061] In the twelfth technical solution, the moving spring group extends along the X-axis direction, which can reduce the height of the contact part along the Z-axis direction, which is more conducive to saving space of the relay along the Z-axis direction, and is also conducive to increasing the contact gap between the moving contact and the static contact along the Z-axis direction, thereby improving the voltage resistance of the relay.

[0062] In the thirteenth technical solution, the shell is provided with a sliding groove that slides with the sliding fitting part of the pushing member, which can improve the certainty of the movement direction of the pushing member and constrain the freedom of the pushing member in other directions, so that the pushing member is less likely to be displaced or deformed when impacted in an uncertain direction, thereby improving the reliability of the relay.

[0063] In the fourteenth technical solution, the load terminal is partially located below the sliding fitting part, which is beneficial to increase the flow area of ​​the load terminal, achieve greater load-bearing capacity, and reduce heat generation. The first intersection is located above the rotation axis, that is, the swing part is biased upward relative to the main body, so that the sliding fitting part is not easy to interfere with the load terminal located below it, and the movement stroke of the pusher is easier to ensure, which can increase the distance between the moving contact and the static contact and enhance the pressure resistance.

[0064] In the fifteenth technical solution, all positions where the pusher contacts the swinging portion are closer to the rotation axis along the X-axis direction than the second matching hole (i.e., the position where the pusher contacts the moving spring assembly). This is beneficial for reducing the movement stroke of the pusher along the Z-axis direction while ensuring the spacing between the moving contact and the static contact. It is particularly beneficial for lowering the highest point of the movement stroke of the pusher, which is beneficial for ensuring that the highest point does not exceed the highest point of the coil assembly, and thus is beneficial for saving the height of the relay in the Z-axis direction.

[0065] In the sixteenth technical solution, a first abutting portion suitable for being abutted upward by the swinging portion and a second abutting portion suitable for being abutted downward by the swinging portion are respectively provided on both sides of the first matching hole along the Z-axis direction, and the first abutting portion and the second abutting portion are both turned outward from the hole wall of the first matching hole along the X-axis direction, so that the contact point between the swinging portion and the pushing member can move along the turned-out direction, which is beneficial to reducing scraping between the swinging portion and the pushing member or base made of metal.

[0066] In the sixteenth technical scheme, by setting the first abutment portion and the second abutment portion turned outward along the X-axis direction, it is beneficial to make the pushing member thinner and ensure that it always abuts against the swinging portion correctly, which is beneficial to miniaturization of the relay and also beneficial for the swinging portion to always abut against the second abutment portion at the lowest point, thereby ensuring that when the pushing member enters the overtravel through the elastic member after the moving contact contacts the static contact, the overtravel distance along the movement direction of the pushing member enables the moving contact to always reliably press against the static contact.

[0067] In the sixteenth technical solution, the surfaces of the first abutting portion and the second abutting portion suitable for contacting the swinging portion are both smooth curved surfaces, the friction coefficient between the pushing member and the swinging portion is smaller, and the life of the swinging portion is longer.

[0068] In the seventeenth technical solution, the pusher is partially bent between the first abutment portion and the second abutment portion, which can reduce the size of the pusher along the Z-axis direction, and is more conducive to realizing the above-mentioned function when the space in the Z-axis direction is small. In particular, when the swing portion is biased upward relative to the main body, since the distance along the X-axis direction when the swing portion swings upward to the highest point and swings downward to the lowest point will become larger, the pusher is partially bent between the first abutment portion and the second abutment portion, which facilitates the swing portion to correctly abut against the first abutment portion and the second abutment portion when it swings upward to the highest point and swings downward to the lowest point, so that the moving contact can correctly close or open with the static contact.

[0069] In the eighteenth technical solution, when the pushing member is partially bent between the first abutment portion and the second abutment portion, the outward directions of the first abutment portion and the second abutment portion diverge from each other, which is beneficial for making the contact points between the swinging portion and the first abutment portion and the second abutment portion closer along the X-axis direction, thereby avoiding a large reciprocating force on the pushing member along the X-axis direction when the swinging portion drives the pushing member to move.

[0070] In the eighteenth technical solution, the pusher moves along the X-axis direction, causing the dynamic spring assembly to extend along the Z-axis direction, thereby reducing the board area occupied by the entire relay (the projected area along the Z-axis direction). When the height direction of the relay is not strictly restricted, the electrical density of the circuit board can be higher.

[0071] In the nineteenth technical solution, the swinging part and the movable spring assembly are respectively extended into the first matching hole and the second matching hole along the Z-axis direction, so that the assembly of the relay is simpler.

[0072] In the twentieth technical solution, the magnetic circuit part, the contact part and the pushing part are all mounted on the base, and the movement relationship between them is more accurate with the base as the reference. The packaging is realized by covering the base along the Z-axis direction, and the assembly is simpler.

[0073] In the twentieth technical solution, the support member is not only plugged into and matched with the protrusion of the magnetic drive end along the Y-axis direction, but also plugged into and matched with the slot of the shell along the Z-axis direction. The degree of freedom of the support member is completely restricted, which is more conducive to supporting the armature assembly so that the rotation axis of the armature assembly will not move along the X-axis direction, and when the relay is impacted, the armature assembly with larger mass can transmit the impact force to the support member through the convex shaft, and the support member then transmits the force to the shell, so that the components are not easily displaced relative to each other.

[0074] In the twenty-first technical solution, since the swing part and the movable spring group are respectively plugged into the first matching hole and the second matching hole on the pushing member in directions roughly opposite to each other, the base is divided into a first seat body and a second seat body, the first seat body, the magnetic circuit part and the pushing part form a first combination body, the second seat body and the contact part form a second combination body, and the first combination body and the second combination body are plugged into and matched along the X-axis direction, so that the movable spring group is inserted into the second matching hole along the X-axis direction during the plug-in and matching process, which can make the relay under the configuration of the present application easier to assemble and can avoid the swing part and the movable spring group from being plugged into the pushing member in directions opposite to each other at the same time.

[0075] In the twenty-first technical solution, by means of snap-fitting, the first assembly and the second assembly will not separate from each other along the X-axis direction before being fixed to the cover body.

[0076] In the twenty-second technical solution, the load terminal cooperates with the first limit block and the second limit block in the Z-axis direction, so that the first assembly and the second assembly are fixed relative to each other in the Z-axis direction. The load terminal is inserted between the first limit block and the second limit block in the X-axis direction, which can increase the flow area of ​​the load terminal and is conducive to improving the load capacity.

[0077] In the twenty-third technical solution, the load terminal is matched with the first limit block and the second limit block in the Z-axis direction, and the length of the second limit block and the load terminal in the X-axis direction is less than the length of the first limit block and the load terminal in the X-axis direction, which is conducive to the end of the second assembly away from the first assembly in the X-axis direction to deflect downward relative to the first assembly, so that the second clamping block is disengaged from the first clamping block, thereby enabling the first assembly and the second assembly to be quickly disassembled. At the same time, since the length of the first limit block and the load terminal in the X-axis direction is relatively large, the part where the second assembly and the first assembly are plugged into each other is less likely to sink due to the downward impact force in the Z-axis direction, thereby avoiding the plugged-in parts from becoming weak points after the relay is assembled.

[0078] In the twenty-fourth technical solution, the insert block cooperates with the corresponding two second limit blocks along the Y-axis direction to fix the first assembly and the second assembly relative to each other along the Y-axis direction.

[0079] In the twenty-fourth technical solution, the first clamping block is arranged on the side of the second limit block, and the second clamping block is arranged on the side of the insertion block, so that the connection strength between the first clamping block and the second clamping block is greater and it is less likely to be disengaged.

[0080] The twenty-fifth technical solution is a second assembly method of the relay under the same configuration, in which the magnetic circuit unit is plugged and matched with the base along the X-axis direction, so that the swinging part can extend into the first matching hole away from the rotation axis. In this case, the coil terminal no longer penetrates the base, but only penetrates the coil frame. When the cover body is fixedly connected to the base, the cover body is arranged outside the coil frame along the X-axis direction, which can prevent the coil frame from detaching from the third assembly along the X-axis direction.

[0081] In the twenty-fifth technical solution, the interference fit between the support member and the protrusion is used to prevent the support member from being assembled to the base along the Z-axis direction, so that the magnetic circuit unit can be smoothly attached to the third assembly along the X-axis direction.

[0082] The twenty-sixth and twenty-seventh technical solutions are the third and fourth assembly methods of relays with the same configuration.

[0083] In the twenty-eighth technical solution, the portion of the pusher that is suitable for contacting the dynamic spring group is made of metal. Therefore, when the external current load is large and causes the dynamic spring to generate a large amount of heat, compared to the technical solution in which the portion in contact with the dynamic spring group is made of plastic material, it can avoid the situation in which the pusher softens or even melts due to the heat of the dynamic spring group, causing the closing stroke of the dynamic spring group to be inconsistent with the design, thereby improving the load capacity and reliability of the relay.

[0084] In the twenty-ninth technical solution, the pushing member is made entirely of metal, which has higher strength and is less susceptible to the heat generated by the moving spring assembly.

[0085] In the thirtieth technical solution, when the pusher is a stainless steel sheet metal part, it is easier to process and shape, has a simpler structure, higher strength, and is more conducive to miniaturized design; when the pusher is an aluminum casting or an aluminum alloy casting, it is easier to process and shape, has a lower density, higher strength, and lower cost.

[0086] In the thirty-first technical solution, the part of the pusher that contacts the movable spring and the part that contacts the armature assembly are both formed on the base, and the base is made of metal, which can also prevent the pusher from softening or even melting due to the heat of the movable spring assembly. The sliding fit part and the housing slide together to improve the certainty of the movement direction of the pusher, constrain the freedom of the pusher in other directions, and make the pusher less likely to displace or deform when impacted in an uncertain direction, thereby improving the reliability of the relay.

[0087] In the thirty-first technical solution, the sliding fitting part is made of plastic material, which is easier to slide with the shell made of the same plastic material, and is not easy to produce scraps to cause jamming or deflection. The sliding fitting part and the base insert are integrally molded by injection molding, with higher dimensional accuracy and smaller dimensional tolerance.

[0088] In the thirty-second technical solution, when the substrate is a stainless steel sheet metal part, it is easier to process and shape, has a simpler structure, higher strength, and is more conducive to miniaturized design; when the substrate is an aluminum casting, it is easier to process and shape, has a lower density, higher strength, and lower cost.

[0089] In the thirty-second technical solution, the dimension of the sliding fitting part along the X-axis direction is larger than the thickness of the base along the X-axis direction, which is more conducive to the same fitting clearance between the sliding fitting part and the slide groove, so that the pushing member is less likely to deflect along the X-axis direction and cause jamming and change the contact point with the moving spring to avoid the travel of the moving contact from deviating from the design purpose, thereby ensuring the spacing between the moving contact and the static contact, and thus ensuring the voltage resistance of the relay.

[0090] The thirty-third technical solution is the simplest structural implementation scheme of the third technical solution.

[0091] In the thirty-fourth technical solution, the other two load terminals except the common terminal are arranged along the Y-axis direction, which is consistent with the arrangement direction of each dynamic spring group, and is easier to connect with the dynamic spring group.

[0092] In the thirty-fifth technical solution, the portion of the common terminal extending downward is located in the middle of the base along the Y-axis direction, which is more conducive to utilizing the space between the two dynamic spring groups and has a higher space utilization rate.

[0093] In the thirty-sixth technical solution, each load terminal is provided with a connection portion perpendicular to the Z-axis direction, so that the load terminal can be laid flat along the X-axis and the Y-axis, which can not only reduce the height of the relay along the Z-axis direction, but also increase the current-carrying area of ​​the load terminal, improve the load capacity of the relay, and is particularly suitable for use in a large current environment, such as a large current environment with a load current of 80A. At this time, by setting a common terminal, the structure of the relay can be made more compact and occupy less space when the multi-channel control function is required in a large current environment. The moving spring group extends along the X-axis direction, which can reduce the height of the contact part along the Z-axis direction, which is more conducive to saving the space of the relay along the Z-axis direction, and is also conducive to increasing the contact gap between the moving contact and the static contact along the Z-axis direction, thereby improving the voltage resistance of the relay.

[0094] In the thirty-sixth technical solution, by arranging the connecting parts of the three load terminals in two layers along the Z-axis direction, all switches are located between the two layers of connecting parts, which is beneficial to reducing the height of the relay along the Z-axis direction and making full use of the space in the X-axis direction and the Y-axis direction.

[0095] In the thirty-seventh technical solution, the connecting portion of the common terminal is provided with a first arm and a second arm extending away from each other along the X-axis direction and respectively corresponding to the magnetic circuit units, so that the common terminal has a larger current-carrying area when occupying one of the two layers along the Z-axis direction.

[0096] The thirty-eighth technical solution is two specific implementation methods of the thirty-seventh technical solution, and the pushers are arranged along the Y-axis direction, so that the relay can make full use of two layers of space on a plane perpendicular to the Z-axis direction to achieve a larger load capacity. Among them, the first arm and the second arm are both connected to the static contact group or the moving spring group, which is a better implementation method. Since the connection parts of the two other load terminals are farther away from the magnetic circuit part than the first arm and the second arm along the X-axis direction, the three load terminals use less materials, have lower costs, and have a more compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0098] Figure 1 It is a three-dimensional exploded view of the relay in Example 1 except the cover;

[0099] Figure 2 is a three-dimensional diagram of the first seat body in the first embodiment;

[0100] Figure 3 is a top view of the first seat body in the first embodiment;

[0101] Figure 4 for Figure 3 A partial enlarged view of part A;

[0102] Figure 5 is a three-dimensional diagram of the second seat body in the first embodiment;

[0103] Figure 6 is a three-dimensional diagram of the magnetic circuit unit in the first embodiment;

[0104] Figure 7 is a structural schematic diagram of the magnetic circuit unit in the first embodiment;

[0105] Figure 8 is a three-dimensional diagram of the support member in the first embodiment;

[0106] Fig. 9 is a three-dimensional diagram of the contact portion in the first embodiment;

[0107] Fig.10 is a stereoscopic diagram of the third load terminal and each static contact group in the first embodiment;

[0108] Fig.11 is a three-dimensional diagram of the pusher in the first embodiment;

[0109] Fig.12 is a top view of the pusher in the first embodiment;

[0110] Fig.13 for Fig.12 A partial enlarged view of part B;

[0111] Fig.14 It is a schematic diagram of the matching relationship between the pusher and the first seat body in the first embodiment;

[0112] Fig.15 for Fig.14 A partial enlarged view of the C part;

[0113] Fig.16 It is a three-dimensional diagram of the relay except the cover in the first embodiment;

[0114] Fig.17 for Fig.16 A partial enlarged view of the D part;

[0115] Fig.18 Schematic diagram of the electrical structure of the relay in Embodiment 1;

[0116] Fig.19 It is a schematic diagram of the structure of the relay in the first embodiment when the two switches are in the disconnected state;

[0117] Fig. 20 It is a schematic diagram of the structure of the relay in the first embodiment when the two switches are in a closed state;

[0118] Fig.21 is a three-dimensional diagram of the first assembly in Example 1;

[0119] Fig. 22 is a three-dimensional diagram of the second assembly in the first embodiment;

[0120] Fig.23 is a bottom view of the relay in the first embodiment;

[0121] Fig.24 for Fig.23 EE section view;

[0122] Fig.25 is a three-dimensional diagram of the pusher in the second embodiment;

[0123] Fig.26 It is a front view of the relay except the cover in the third embodiment;

[0124] Fig. 27 It is a right side view of the relay except the cover in the third embodiment;

[0125] Fig.28 This is a schematic diagram of the structure of the relay except the cover in the fourth embodiment;

[0126] Fig.29 This is a schematic diagram of the structure of the relay except the cover in the fifth embodiment;

[0127] Fig.30 is a three-dimensional diagram of the contact portion in Example 6;

[0128] Fig.31 This is a schematic diagram of the electrical structure of the relay in Embodiment 6;

[0129] Fig.32 It is a stereoscopic diagram of the relay except the cover in the seventh embodiment;

[0130] Fig.33 This is a schematic diagram of the electrical structure of the relay in Embodiment 7;

[0131] Fig.34 It is a stereoscopic diagram of the relay in Embodiment 8 except the cover;

[0132] Fig.35 This is a schematic diagram of the electrical structure of the relay in Example 8.

[0133] Description of main reference numerals:

[0134] 1. Relay; 10. Housing; 11. Base; 110. First seat; 111. Coil frame mounting groove; 112. Slot; 113. Slide; 113a. Straight section; 113b. Arc section; 113c. Inward section; 114. Coil terminal hole; 115. First stop block; 116. Second stop block; 117. First interval; 118. First clamping block; 120. Second seat; 121. Load terminal hole; 122. Inserting block; 123. First load terminal hole; 124. Second load terminal hole; 125. Third load terminal hole; 126. Second clamping block; 130. Third seat; 140. Fourth seat; 150. Fifth seat body; 160, sixth seat body; 170, seventh seat body; 20, magnetic circuit part; 21, magnetic circuit unit; 21a, first magnetic circuit unit; 21b, second magnetic circuit unit; 210, coil assembly; 211, coil frame; 212, coil winding; 213, coil terminal; 214, iron core; 215, yoke; 216, magnetic drive end; 217, protrusion; 220, armature assembly; 221, permanent magnet; 222, armature; 223, main body; 224, convex shaft; 225, swinging part; 226, suction part; 227, first plane; 228, first straight line; 229, first intersection; 230, support member; 231, connecting hole; 232, shaft hole; 30, contact portion; 31, movable spring group; 32, static contact group; 33, load terminal; 34, switch; 31a, first movable spring group; 31b, second movable spring group; 310, movable spring; 311, movable contact; 312, movable spring body; 313, elastic member; 314, movable contact group; 31c, first movable contact group; 31d, second movable contact group; 315, fixed end; 316, moving end; 32a, first static contact group; 32b, second static contact group; 320, static contact; 33a, first load terminal; 33b, second load terminal; 33c, third load terminal; 330, common terminal; 331, connecting portion ; 332, first arm; 333, second arm; 34a, first switch; 34b, second switch; 40, pushing portion; 41, pushing member; 41a, first pushing member; 41b, second pushing member; 410, base; 411, sliding fitting portion; 411a, recessed portion; 412, first fitting hole; 413, second fitting hole; 414, first abutting portion; 415, second abutting portion; 51, first assembly; 52, second assembly; 53, third assembly; 54, fourth assembly; 55, fifth assembly; 56, sixth assembly; 57, seventh assembly; 58, eighth assembly; P, winding axis; Q, rotation axis. DETAILED DESCRIPTION

[0135] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0136] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0137] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0138] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0139] In the claims and the specification, unless otherwise defined, the term "movable spring" includes a movable spring body, a movable contact and an elastic member when an elastic member is provided between a movable spring body to which a movable contact is fixed and a pusher, and includes a movable spring body and a movable contact when there is no elastic member.

[0140] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0141] In the claims and the specification, unless otherwise specified, the term "extending downward" means that the coil terminals and the load terminals extend downward along the Z-axis direction from the relay body composed of the housing, each coil assembly, each armature assembly, each switch and each pusher. When the magnetic circuit unit includes a support, each support is also part of the relay body.

[0142] In the claims and the specification, unless otherwise defined, the term "group" is a collective concept, that is, a "movable spring group" is a specific set of movable springs formed by at least one movable spring, a "stationary contact group" is a specific set of stationary contacts formed by at least one stationary contact, and a "movable contact group" is a specific set of movable contacts formed by at least one movable contact.

[0143] In the claims and the specification, unless otherwise defined, the term "correspondingly arranged" means that the two are the same in number and correspond one to one.

[0144] In the claims and the specification, unless otherwise defined, the term "extension direction of the armature" refers to the arrangement direction of the two suction parts of the armature.

[0145] In the claims and the specification, unless otherwise defined, the term "a symmetric plane of two armatures" refers to a plane parallel to the extension direction of the armatures and located between the two armatures.

[0146] In the claims and the specification, unless otherwise defined, the term "the first card block and the second card block are engaged along the X-axis direction" means that during the engaging process, the first card block and / or the second card block elastically deforms perpendicular to the X-axis direction until the first card block and the second card block are inserted into place and then recover their deformation, so that the first card block and the second card block abut against each other along the X-axis direction, and the first assembly and the second assembly cannot be separated from each other along the X-axis direction.

[0147] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0148] Embodiment 1

[0149] See also Figure 1 , Figure 1 1 shows the relay 1 in the first embodiment. Figure 1 As shown, the relay 1 in this embodiment includes a housing 10 , a magnetic circuit portion 20 , a contact portion 30 and a pushing portion 40 .

[0150] like Figure 1 As shown, the housing 10 includes a base 11 and a cover (not shown in the figure), and the base 11 includes a first base body 110 and a second base body 120 which are detachably fixed to each other.

[0151] like Figure 1As shown, the magnetic circuit part 20 includes at least two magnetic circuit units 21. In this embodiment, the number of magnetic circuit units 21 is two, namely, a first magnetic circuit unit 21a and a second magnetic circuit unit 21b. In this embodiment, the two magnetic circuit units 21 have the same shape and structure. The contact part 30 includes a movable spring group 31, a static contact group 32 and a load terminal 33. In this embodiment, "group" is a collection concept. For example, the "movable spring group 31" is a specific collection of movable springs formed by at least one movable spring, and the "static contact group 32" is a specific collection of static contacts formed by at least one static contact. The number of the movable spring group 31 and the static contact group 32 is the same as the number of the magnetic circuit units 21, both of which are two, and are arranged corresponding to the magnetic circuit units 21; specifically, the two movable spring groups 31 include a first movable spring group 31a corresponding to the first magnetic circuit unit 21a and a second movable spring group 31b corresponding to the second magnetic circuit unit 21b. In this embodiment, the two movable spring groups 31 have the same shape and structure. The two static contact groups 32 include a first static contact group 32a corresponding to the first magnetic circuit unit 21a and a second static contact group 32b corresponding to the second magnetic circuit unit 21b. In this embodiment, the shapes and structures of the two static contact groups 32 are the same. There are three load terminals 33, namely a first load terminal 33a, a second load terminal 33b and a third load terminal 33c.

[0152] like Figure 1 As shown, the pushing portion 40 includes a pushing member 41. The number of the pushing members 41 is the same as the number of the magnetic circuit units 21, both being two, and are arranged corresponding to the magnetic circuit units 21. Specifically, the two pushing members 41 include a first pushing member 41a corresponding to the first magnetic circuit unit 21a and a second pushing member 41b corresponding to the second magnetic circuit unit 21b. In this embodiment, the two pushing members 41 have the same shape and structure.

[0153] See also Figure 2 , Figure 3 and Figure 4 , Figure 2 , Figure 3 and Figure 4 FIG. 1 shows the first seat body 110 in this embodiment. The first seat body 110 is made of plastic material. Figure 2 As shown, the first seat body 110 is provided with a coil frame installation groove 111, two slots 112 and two slide grooves 113 corresponding to each magnetic circuit unit 21. The coil frame installation groove 111, two slots 112 and two slide grooves 113 are arranged in sequence along the X-axis direction and extend along the Z-axis direction. The coil frame installation groove 111 and the two slots 112 are used to attach the corresponding magnetic circuit unit 21. The two slide grooves 113 are used to attach the corresponding pusher 41. Figure 3 and Figure 4As shown, two slide grooves 113 are provided with openings opposite to each other along the Y-axis direction. The wall surface of each slide groove 113 is provided with a straight section 113a, an arc section 113b and an inward section 113c in sequence. Among them, the straight section 113 of each slide groove 113 is closer to the coil frame installation groove 111 than the arc section 113b and the inward section 113c along the X-axis direction. The straight section 113 is plane and perpendicular to the X-axis direction away from the coil frame installation groove 111. One end of the arc section 113b is connected to the straight section 113a, and the other end is connected to the inward section 113c. The arc section 113b is in the shape of an arc surface, and the bottom of the wall surface of the slide groove 113 along the Y-axis direction is formed at the arc section 113b. On the projection surface perpendicular to the Z-axis direction, at least one straight line passing through the projection center of the arc section 113b intersects with the projection of the arc section 113b at two points. The retracted section 113c is connected to the arc section 113b and retracts inward along the X-axis direction toward the straight section 113a. The distance between the top of the retracted section 113c and the straight section 113a along the X-axis direction is smaller than the diameter of the projection of the arc section 113b on the projection plane perpendicular to the Z-axis direction. Figure 2 As shown, at least two coil terminal holes 114 are provided in the coil frame mounting groove 111. In this embodiment, the number of coil terminal holes 114 is three, and each coil terminal hole 114 is arranged along the Y-axis direction, and all pass through the first seat body 110 along the Z-axis direction. A first limit block 115 and a second limit block 116 are provided at one end of the first seat body 110 away from the coil frame mounting groove 111 along the X-axis direction, and the first limit block 115 is located above the second limit block 116 along the Z-axis direction. The number of the first limit block 115 is one, which is located in the middle of the first seat body 110 along the Y-axis direction, and extends away from the coil frame mounting groove 111 along the X-axis direction. In this embodiment, the second limit block 116 is divided into two groups corresponding to the magnetic circuit unit 21. The two groups of second limit blocks 116 are arranged along the Y-axis direction. Each group of second limit blocks 116 includes two second limit blocks 116 arranged along the Y-axis direction, a first gap 117 is formed between the two second limit blocks 116, and the two second limit blocks are each provided with a first clamping block 118 on one side adjacent to each other along the Y-axis direction. In this embodiment, the length of the first limit block 115 extending along the X-axis direction is greater than the length of each second limit block 116 extending along the X-axis direction.

[0154] See also Figure 5 , Figure 5 The second base body 120 of this embodiment is shown, and the second base body 120 is made of plastic material. Figure 5As shown, the second seat 110 is provided with a load terminal hole 121 and an insert block 122. The number of the load terminal holes 121 is the same as the number of the load terminals 33, both are three, and are arranged corresponding to the load terminals 33. Specifically, the three load terminal holes 121 include a first load terminal hole 123 corresponding to the first load terminal 33a, a second load terminal hole 124 corresponding to the second load terminal 33b, and a third load terminal hole 125 corresponding to the third load terminal 33c. Each load terminal hole 121 penetrates the second seat 120 along the Z-axis direction. Among them, the first load terminal hole 123 and the second load terminal hole 124 are arranged along the Y-axis direction. The third load terminal hole 125 is located in the middle of the second seat 120 along the Y-axis direction. The insert block 122 is located at one end away from each load terminal hole 121 along the X-axis direction. The number of the insert blocks 122 is the same as the number of the first interval 117, both are two, and are arranged corresponding to the first interval 117. The two insert blocks 122 are arranged along the Y-axis direction. Each inserting block 122 is suitable for extending into the corresponding first space 117 along the X-axis direction. Each inserting block 122 is provided with a second clamping block 126 corresponding to the first clamping block 118 on both sides along the Y-axis direction.

[0155] In this embodiment, the cover is disposed downwardly on the base 11 along the Z-axis direction and is fixedly connected to the base 11 .

[0156] See also Figure 1 , Figure 6 and Figure 7 . Figure 1 , Figure 6 and Figure 7 FIG. 2 shows the magnetic circuit unit 21 in this embodiment. The magnetic circuit unit 21 is attached to the first seat body 110. Figure 1 , Figure 6 and Figure 7 As shown, each magnetic circuit unit 21 includes a coil assembly 210 , an armature assembly 220 and two supports 230 .

[0157] like Figure 1 As shown, the coil assembly 210 is fixed relative to the first base 110 and is accommodated in the housing 10. Figure 6 and Figure 7As shown, the coil assembly 210 includes a coil frame 211, a coil winding 212, a coil terminal 213, an iron core 214 and two yokes 215. The coil frame 211 is suitable for being placed in the corresponding coil frame mounting groove 111 along the Z-axis direction and fixedly connected to the first seat body 110. The coil frame 211 includes two retaining walls arranged along the Z-axis direction and an axis body located between the two retaining walls, and the axis body extends along the Z-axis direction. The coil winding 212 is wound on the axis body of the coil frame 211. The winding axis P of the coil winding 212 extends along the Z-axis direction. The number of coil terminals 213 is the same as the number of coil terminal holes 114, both of which are three, and are arranged corresponding to the coil terminal holes 114. Each coil terminal 213 is fixedly connected to the coil frame 211 and passes through the retaining wall of the coil frame 211 located below along the Z-axis direction along the Z-axis direction. When the coil frame 211 is fixed to the first seat body 110, each coil terminal 213 also passes through the corresponding coil terminal hole 114 along the Z-axis direction and extends downward along the Z-axis direction. In this embodiment, "extending downward" means that each coil terminal 213 and each load terminal 33 extend downward along the Z-axis direction. The relay body composed of the housing 10, each coil frame 211, each coil winding 212, each iron core 214, each yoke 215, each armature assembly 220, each support 230, each moving spring group 31, each static contact group 32 and each pusher 41. The iron core 214 extends along the Z-axis direction and is inserted into the shaft body of the coil frame 210. Two yokes 215 are arranged along the Z-axis direction, one end of each yoke 215 is fixed to the iron core 214, and the other end forms a magnetic drive end 216. The two magnetic drive ends 216 drive the armature assembly 220 to rotate relative to the coil assembly 210 by switching the magnetic polarity. In this embodiment, protrusions 217 are respectively provided on two sides of each magnetic driving end 216 along the Y-axis direction.

[0158] like Figure 6 and Figure 7As shown, the armature assembly 220 rotates relative to the coil assembly 210 around the rotation axis Q extending along the Y-axis direction and is accommodated in the housing 10. The armature assembly 220 includes a permanent magnet 221 fixed to each other, two armatures 222, a main body 223, two convex shafts 224 and a swinging portion 225. The permanent magnet 221 is placed in the main body 223 and is provided with two magnetic pole faces. The two armatures 222 are respectively fixed to the two magnetic pole faces of the permanent magnet 221. The extension directions of the two armatures 222 are parallel to each other. Each armature 222 is partially located in the main body 223, and each armature 222 extends out of the main body 223 at both ends along its extension direction and forms an attraction portion 226 suitable for being attracted with the corresponding magnetic drive end 216. In this embodiment, the "extension direction of the armature 222" refers to the layout direction of the two attraction portions 226 of the armature 222. The two convex shafts 224 extend away from each other along the Y-axis direction from both sides of the main body 223 along the Y-axis direction. The two protruding shafts 224 are used to establish a rotational connection relationship with the two supporting members 230. The swinging portion 225 extends out of the main body 223 perpendicularly to the Y-axis direction to cooperate with the pushing member 41. In this embodiment, the extension direction of the swinging portion 225 is perpendicular to the extension direction of the armature 222. Specifically, in this embodiment, the intersection of the first plane 227 and the first straight line 228 is the first intersection 229, and along the Z-axis direction, the first intersection 229 is located above the rotation axis Q. Among them, the first plane 227 is a plane passing through the rotation axis Q and parallel to the extension direction of the armature 222. The first straight line 228 is a straight line perpendicular to the first plane 227 made through the contact point between the swinging portion 225 and the pushing member 41 when the movable spring group 31 and the static contact group 32 are closed. In this embodiment, the main body 223, the two protruding shafts 224 and the swinging portion 225 are all made of plastic and connected as a whole. The two armatures 222 are both made of metal. The main body 223, two convex shafts 224, swinging part 225, permanent magnet 221 and two armatures 222 are integrally formed by insert injection molding to form the armature assembly 220 in this embodiment. From the configuration of the armature assembly 220 in this embodiment, it can be known that the relay 1 in this embodiment is a magnetic latching relay. Of course, in other embodiments, it may not have a magnetic latching function.

[0159] See also Figure 6 and Figure 8 , Figure 6 and Figure 8 Two supports 230 are shown in this embodiment. Figure 6 and Figure 8As shown, two support members 230 are fixed relative to the coil assembly 210 and are located in the housing 10. The two support members 230 are used to support the armature assembly 220. Specifically, each support member 230 is located on both sides of the coil assembly 210 along the Y-axis direction, and is arranged corresponding to the slot 112. The two support members 230 are suitable for being inserted into the corresponding slot 112 downward along the Z-axis direction. Each support member 230 extends along the Z-axis direction. Each support member 230 is provided with two connecting holes 231 along the Z-axis direction. The two connecting holes 231 are suitable for corresponding plug-in matching with two protrusions 217 located on the same side along the Y-axis direction. Each support member 230 is provided with an axial hole 231 that is rotatably matched with the corresponding convex shaft 224, and the axial hole 232 is located between the two connecting holes 231 along the Z-axis direction.

[0160] See also Figure 1 , Fig. 9 and Fig.10 , Figure 1 , Fig. 9 and Fig.10 FIG. 3 shows the contact portion 30 in this embodiment. Figure 1 As shown, the contact portion 30 is mounted on the second base 120. The contact portion 30 and the magnetic circuit portion 20 are arranged along the X-axis direction.

[0161] like Fig. 9As shown, each movable spring group 31 is arranged along the Y-axis direction. Each movable spring group 31 extends along the X-axis direction. Each movable spring group 31 includes at least one movable spring 310, and more preferably, each movable spring group 31 includes at least two movable springs 310. In the present embodiment, each movable spring group 31 includes three movable springs 310. In the same movable spring group 31, each movable spring 310 is arranged along the Y-axis direction. Each movable spring 310 includes at least one movable contact 311, a movable spring body 312 and an elastic member 313. In the present embodiment, each movable spring 310 is provided with one movable contact 311. All movable contacts 311 in the same movable spring group 31 form a movable contact group 314. In the present embodiment, the number of movable contact groups 314 is the same as the number of movable spring groups 31, both of which are two. The two movable contact groups 314 include a first movable contact group 31c belonging to the first movable spring group 31a and a second movable contact group 31d belonging to the second movable spring group 31b. The movable spring body 312 is provided with a fixed end 315 and a moving end 316. The fixed end 315 is connected to the load terminal 33. The moving end 316 is away from the fixed end 315 along the extension direction of the movable spring body 312. In this embodiment, the fixed end 315 and the moving end 316 are arranged along the X-axis direction. The moving contact 311 is fixedly connected to the movable spring body 312 and is close to the moving end 316. One end of the elastic member 313 is connected to the movable spring body 312, and the other end is suitable for being pushed by the pushing member 41. In this embodiment, the elastic member 313 is a compression spring. One end of the elastic member 313 is connected to the movable spring body 312 at the position where the moving contact 311 is located. The other end of the elastic member 313 is suitable for being pushed by the pushing member 41, and forms a gap with the moving end 316 along the movement direction of the pushing member 41.

[0162] like Fig. 9 As shown, each static contact group 32 is provided with a static contact 320 corresponding to all the dynamic contacts 311 in the corresponding dynamic spring group 31. In this embodiment, the dynamic contact 311 is closed with the static contact 320 downward along the Z-axis direction, and is disconnected from the static contact 320 upward along the Z-axis direction. Correspondingly, the dynamic contact group 314 is closed with the corresponding static contact group 32 downward along the Z-axis direction, and is disconnected from the corresponding static contact group 32 upward along the Z-axis direction. Specifically, the dynamic contact group 31c is closed or disconnected with the static contact group 32a along the Z-axis direction, and the dynamic contact group 31d is closed or disconnected with the static contact group 32b along the Z-axis direction. In this embodiment, the dynamic spring group 31 and the corresponding static contact group 32 constitute a switch 34. Specifically, the first dynamic spring group 31a and the first static contact group 32a constitute a first switch 34a, and the second dynamic spring group 31b and the second static contact group 32b constitute a second switch 34b.

[0163] like Figure 1 , Fig. 9 and Fig.10As shown, each load terminal 33 is arranged corresponding to each load terminal hole 121. Specifically, the first load terminal 33a corresponds to the first load terminal hole 123, the second load terminal 33b corresponds to the second load terminal hole 124, and the third load terminal 33c corresponds to the third load terminal hole 125. Each load terminal 33 is fixedly connected to the second seat body 120 and passes through the corresponding load terminal hole 121 along the Z-axis direction, and extends downward from the aforementioned relay body. Specifically, the first load terminal 33a and the second load terminal 33b are arranged along the Y-axis direction, and the portion of the third load terminal 33c extending downward from the base 11 is located in the middle of the base 11 along the Y-axis direction. The dynamic spring group 31 and the static contact group 32 in each switch 34 are respectively connected to different load terminals 33. At least one load terminal 33 is simultaneously connected to at least two static contact groups 32 and forms a common terminal 330. In this embodiment, the first load terminal 33a is fixedly connected and electrically connected to the first dynamic spring group 31a. The second load terminal 33b is fixedly connected and electrically connected to the second dynamic spring group 31b. The third load terminal 33c is fixedly connected and electrically connected to the first static contact group 32a and the second static contact group 32b to form a common terminal 330. In the present embodiment, each load terminal 33 is provided with a connecting portion 331 perpendicular to the Z-axis direction, and the connecting portion 331 is used to connect the static contact group 32 and / or the moving spring group 31. In the present embodiment, the connecting portion 331 of the common terminal 330 is located below the connecting portions 331 of the other two load terminals 33 along the Z-axis direction, and the connecting portions 331 of the other two load terminals 33 are located in the same plane along the Z-axis direction. Specifically, the connecting portion 331 of the third load terminal 33c is located below the connecting portion 331 of the first load terminal 33a and the connecting portion 331 of the second load terminal 33b along the Z-axis direction, and the connecting portion 331 of the first load terminal 33a and the connecting portion 331 of the second load terminal 33b are located in the same plane along the Z-axis direction. As Fig.10 As shown, in this embodiment, the connection portion 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333, and the first arm 332 and the second arm 333 extend away from each other along the X-axis direction and are respectively arranged corresponding to the two magnetic circuit units 20. In this embodiment, the first arm 332 and the second arm 333 are both connected to the stationary contact group 32, and the positions of the first arm 332 and the second arm 333 along the X-axis direction are closer to the magnetic circuit portion 20 than the connection portions 331 of the two other load terminals 33. Specifically, the first arm 332 is connected to the first stationary contact group 32a, and the second arm 333 is connected to the second stationary contact group 32b, and the positions of the first arm 332 and the second arm 333 along the X-axis direction are closer to the magnetic circuit portion than the connection portion 331 of the first load terminal 33a and the connection portion 332 of the second load terminal 33b.

[0164] See also Figures 11 to 17 , Figures 11 to 17The pushers 41 in this embodiment are shown. Each pusher 41 is attached to the first seat 110 and is located in the housing 10. In this embodiment, the pusher 41 moves relative to the housing 10 along the Z-axis direction. Fig.11 , Fig.16 and Fig.17 As shown, in this embodiment, the pusher 41 includes a base 410 and two sliding mating parts 411. The base 410 is provided with a first mating hole 412 and a second mating hole 413 from top to bottom along the Z-axis direction. The first mating hole 412 is for the swinging part 225 to extend away from the coil assembly 210. The second mating hole 413 is for the moving spring group 31 to extend toward the winding axis P along the X-axis direction. Therefore, in this embodiment, the mating direction of the swinging part 225 and the pusher 41 is substantially opposite to the mating direction of the moving spring group 31 and the pusher 41. The first mating hole 412 is provided with a first abutting part 414 and a second abutting part 415 suitable for abutting against the swinging part 225 from top to bottom on both sides along the Z-axis direction. Since in this embodiment, the movable contact group 314 is closed with the corresponding static contact group 32 downward along the Z-axis direction, and is disconnected with the corresponding static contact group 32 upward along the Z-axis direction, the swing portion 225 is downwardly abutted with the second abutting portion 415 in the closing stroke, and is upwardly abutted with the first abutting portion 414 in the disconnecting stroke. In this embodiment, the first abutting portion 414 and the second abutting portion 415 are both turned outward from the hole wall of the first matching hole 412 along the X-axis direction. The first abutting portion 414 and the second abutting portion 415 are suitable for forming a smooth curved surface on the surface abutting with the swing portion 225, which is an arc surface in this embodiment. In this embodiment, the portion of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent in an upward direction toward a direction closer to the rotation axis Q, and the first abutting portion 414 and the second abutting portion 415 are turned outward in directions away from each other. Specifically, the first abutting portion 414 is turned outward toward the load terminal 33 along the X-axis direction, and the second abutting portion 415 is turned outward toward the rotation axis Q along the X-axis direction. Fig.12 and Fig.13 As shown, two sliding fitting parts 411 are respectively arranged on both sides of the base 410 along the Y-axis direction. The part of the sliding fitting part 411 suitable for extending into the slide groove 113 is generally arc-shaped on the projection surface perpendicular to the Z-axis direction, and at least one inner concave part 411 is formed on the outer edge of the arc-shaped part, and the inner concave part 411 extends along the Z-axis direction. In this embodiment, the number of the inner concave parts 41 is two. Fig.14 and Fig.15As shown, the two sliding fitting parts 411 and the two slide grooves 113 of the housing 10 slide along the moving direction of the pusher 41, and in this embodiment, slide along the Z-axis direction. Due to the presence of the inward section 113c of the two slide grooves 113, the slide grooves 113 generally wrap the corresponding sliding fitting parts 411 extending into the slide grooves 113, and the two slide grooves 113 also limit the pusher 41 along the Y-axis direction. Each slide groove 113 is limited to the corresponding sliding fitting part 411 along the X-axis direction. In this embodiment, the base 410 is made of metal, specifically stainless steel, and is a sheet metal part. In other embodiments, it can also be a casting, and the metal material can also be selected from aluminum or aluminum alloy. The sliding fitting part 411 is made of plastic. The base 410 and the two sliding fitting parts 411 are molded as a whole by insert injection molding. The size of the sliding fitting part 411 along the X-axis direction is larger than the thickness of the base 410 along the X-axis direction. In other embodiments, only the portion of the base 410 suitable for contacting the movable spring assembly 31 is made of metal, that is, the two edges of the second matching hole 413 along the Z-axis direction are made of metal. In other embodiments, only the upper edge of the second matching hole 413 along the Z-axis direction is made of metal, and the upper edge is used to contact and push the movable spring assembly 31 to close the movable contact assembly 314 and the static contact assembly 32. In this embodiment, the upper edge is used to contact and push the elastic member 313 elastically deformed relative to the movable spring body 312 to close the movable contact assembly 314 and the static contact assembly 32. In other embodiments, the movable spring 310 only has the movable spring body 312, and the upper edge contacts and pushes the moving end 316 of the movable spring body 312 to close the movable contact assembly 314 and the static contact assembly 32.

[0165] See also Figures 16 to 20 , Figures 16 to 20 Schematic diagram of the internal structure and electrical structure of the relay 1 in this embodiment is shown. Fig.16 and Fig.17As shown, the first magnetic circuit unit 21a and the second magnetic circuit unit 21b are attached to the base 11 along the Z-axis direction. The two sliding fitting parts 411 of the first pusher 41a are respectively slidably matched with the corresponding slide grooves 113 along the Z-axis direction. The two sliding fitting parts 411 of the second pusher 41b are respectively slidably matched with the corresponding slide grooves 113 along the Z-axis direction. The first load terminal 33a, the second load terminal 33b and the third load terminal 33c are respectively fixed to the base 11. The first movable spring group 31a is fixed to the first load terminal 33a, and the second movable spring group 31b is fixed to the second load terminal 33b. The first static contact group 32a and the second static contact group 32b are respectively fixed to the third load terminal 33c. The swinging part 225 of the first magnetic circuit unit 21a extends into the first matching hole 412 of the first pusher 41a. The swinging part 225 of the second magnetic circuit unit 21b extends into the first matching hole 412 of the second pusher 41b. The moving ends 316 and elastic members 313 of each movable spring 310 of the first movable spring group 31a extend into the second matching hole 413 of the first push member 41a, and the moving ends 316 and elastic members 313 of each movable spring 310 of the second movable spring group 31b extend into the second matching hole 413 of the second push member 41b.

[0166] like Fig.18 As shown, after the relay 1 in this embodiment is connected, the first magnetic circuit unit 21a controls the first switch 34a to be closed or disconnected through the first pusher 41a, and the two ends of the first switch 34a are respectively connected to the first load terminal 33a and the third load terminal 33c, and the first switch 34a independently controls the connection and disconnection between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b to be closed or disconnected through the second pusher 41b, and the two ends of the second switch 34b are respectively connected to the second load terminal 33b and the third load terminal 33c, and the second switch 34b independently controls the connection and disconnection between the second load terminal 33b and the third load terminal 33c. The first switch 34a and the second switch 34b must be closed at the same time, and the first load terminal 33a and the second load terminal 33b are conductive.

[0167] like Fig.19 and Fig. 20 As shown, in this embodiment, no matter what the situation, the position where the pusher 41 abuts against the swinging portion 225 is closer to the rotation axis Q than the second matching hole 413 along the X-axis direction. In this embodiment, on the first projection plane perpendicular to the Z-axis direction, the projection of the sliding matching portion 411 overlaps at least partially with the projection of at least one load terminal 33. Specifically, the projection of the sliding matching portion 411 overlaps at least partially with the projection of the third load terminal 33c. Since the swinging portion 225 in this embodiment is configured so that the first intersection 229 is located above the rotation axis Q along the Z-axis direction, the sliding matching portion 411 and the third load terminal 33c will not collide along the Z-axis direction.

[0168] like Fig.19 As shown, when the switch 34 is in the off state, the moving contact 311 is disconnected from the static contact 320, the swing portion 225 abuts the first abutting portion 414 upward, and the lower edge of the second matching hole 413 abuts the moving end 316 upward. When the switch 34 needs to be closed, the swing portion 225 moves downward and abuts the second abutting portion 415, and the moving contact 311 contacts the static contact 320. After the moving contact 311 contacts the static contact 320, the swing portion 225 continues to move downward into the overtravel, and the push member 41 continues to move downward until the moving contact 311 contacts the static contact 320. Fig. 20 As shown, the swing part 225 moves downward to the limit. The elastic member 313 is deformed to the limit, and the moving contact 311 and the static contact 320 are completely closed. When the switch 34 needs to be disconnected, the swing part 225 abuts the first abutting part 414 upward, driving the push member 41 to move upward, and the lower edge of the second matching hole 413 of the push member 41 moves upward until it abuts the moving end 316 upward, and continues to drive the moving end 316 to move upward. At this time, the elastic member 311 recovers its deformation, and finally reaches the state shown in FIG. Fig.19 The switch 34 is shown in an open state.

[0169] In this embodiment, the assembly process of the relay 1 includes:

[0170] Step 1: Assemble the magnetic circuit part 20 and the pushing part 40 to the first seat body 110 to form a Fig.21 The first assembly 51 shown in FIG. 1 is assembled with the contact portion 30 to the second base 120 to form a Fig. 22 In step 1, the process of assembling the magnetic circuit part 20 and the pushing part 40 to the first seat body 110 to form the first assembly 51 includes the following steps:

[0171] Step 1.1: Assemble the armature assembly 220 and the support member 230 to the coil assembly 210 to form a magnetic circuit unit 21;

[0172] Step 1.2: Each magnetic circuit unit 21 and the corresponding pusher 41 are respectively mounted on the first base 110. During the process of mounting each magnetic circuit unit 21 and the corresponding pusher 41, the swinging portion 225 is extended into the first matching hole 412, and then the sliding matching portion 411 is inserted downwardly into the corresponding slide groove 113 along the Z-axis direction, and the supporting member 230 is inserted downwardly into the slot 112 along the Z-axis direction, and each coil terminal 213 is passed through the first base 110 downwardly along the Z-axis direction;

[0173] Step 2: Insert the first assembly 51 and the second assembly 52 into place along the X-axis direction, and extend the dynamic spring assembly 31 into the second matching hole 413 along the X-axis direction; and

[0174] Step 3: Cover the cover body onto the base 11 and fix it to the base 11 .

[0175] See also Fig.23 and Fig.24 , Fig.23 and Fig.24 It is shown that after the first assembly 51 and the second assembly 52 are plugged into place, the first assembly 51 and the second assembly 52 are relatively fixed. Fig.23 and Fig.24 As shown, during the plugging process of the first seat body 110 and the second seat body 120, the plug block 122 is inserted into the first gap 117 along the X-axis direction, and the first clamping block 118 and / or the second clamping block 126 are elastically deformed. After being plugged in place, the first clamping block 118 and the second clamping block 126 recover their deformation and hook each other, and are engaged along the X-axis direction. After being plugged in place, the plug block 122 is engaged with the corresponding two second limit blocks 116 in a limited position along the Y-axis direction. After being plugged in place, the third load terminal 33c extends into the gap between the first limit block 115 and the second limit block 116 along the X-axis direction, and the third load terminal 33c is engaged with the first limit block 115 and the second limit block 116 in a limited position along the Z-axis direction. In this embodiment, the third load terminal 33c is clearance-matched with the first limit block 115 and the second limit block 116 along the Z-axis direction, and the length of the second limit block 116 and the third load terminal 33c along the X-axis direction is less than the length of the first limit block 115 and the third load terminal 33c along the X-axis direction, so that when the first assembly 51 or the second assembly 52 is subjected to a downward force in the Z-axis direction, the end of the second assembly 52 away from the first assembly 51 along the X-axis direction is allowed to deflect downward relative to the first assembly 51 until the second clamping block 126 is disengaged from the first clamping block 118 along the X-axis direction.

[0176] In this embodiment, when the cover is fixedly connected to the base 11 , the first assembly 51 and the second assembly 52 can be prevented from being separated along the X-axis direction.

[0177] In this embodiment, the magnetic circuit part 20, the contact part 30 and the push part 40 are all attached to the housing, and the magnetic circuit part 20 includes at least two magnetic circuit units 21, and the movable spring group 210, the static contact group 32 and the pusher 41 are all arranged corresponding to the magnetic circuit unit 20. Therefore, at least two switches that can be independently controlled are encapsulated in the housing 10 of a relay. Compared with the prior art, the material of the housing 10 is saved, the packaging volume of the relay 1 is reduced, and when more than two switch functions are realized, the space occupied is smaller than that of the prior art.

[0178] In this embodiment, at least one load terminal 33 is shared by at least two switches 34 to form a common terminal 330. The common terminal 330 reduces the number of load terminals 33, improves the integration of the load terminals 33, and can further reduce space occupation and reduce costs. It can also be applied to most scenarios through the flexible connection between the load terminal 33 and each movable spring group 31 and the static contact group 32.

[0179] In this embodiment, the common terminal 330 is a load terminal 33, which can be electrically connected to an external circuit or not electrically connected to an external circuit. When the external circuit is connected, at least two external circuits can be controlled through the common terminal 330, or a parallel relationship can be established, or a total circuit and branch control can be established; when the external circuit is not electrically connected, the common terminal 330 becomes a component that bridges more than two switches 34, so that more than two switches 34 form a series relationship; therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch 34 is controlled separately, this series relationship or parallel relationship enables the two switches to form a logical relationship of "and" or "or", which can not only be applied to simple logical calculations, but also to scenarios with higher requirements for safety and reliability, avoiding uncontrolled switches due to failure of a single functional part formed by the magnetic circuit unit 21, the pusher 41, the dynamic spring group 31 and the static contact group 32.

[0180] The electrical connection relationship inside the relay 1 in this embodiment can be selected according to customer needs, especially the loading method of the external circuit, so that the relay has greater versatility.

[0181] In this embodiment, each coil terminal 213 and each load terminal 33 extends downward along the Z-axis direction to facilitate electrical connection with the circuit board.

[0182] In this embodiment, the winding axis P of the coil winding 212 extends along the Z-axis direction, which is consistent with the extension direction of each coil terminal 213 and each load terminal 33 , thereby reducing the board area occupied by the relay 1 .

[0183] In this embodiment, each magnetic circuit unit 21 is arranged along the Y-axis direction, each movable spring group 31 is arranged along the Y-axis direction, each pusher 41 is arranged along the Y-axis direction, and the magnetic circuit part 20 and the contact part are arranged along the X-axis direction, so that each functional part is arranged perpendicular to the Y-axis direction, and each functional part is arranged along the Y-axis direction. The functional parts do not need to be staggered in space with each other, which reduces the structural complexity and reduces the difficulty of assembly.

[0184] In this embodiment, the dynamic spring assembly 31 includes at least two dynamic springs 310, which can reduce the total contact resistance between the dynamic contact 311 and the static contact 320, reduce heat generation, and reduce power consumption.

[0185] In this embodiment, each movable spring 310 is provided with a movable contact 311. Compared with the solution in which the same movable spring 310 is provided with multiple movable contacts, it can avoid that some movable contacts 311 cannot be effectively closed with the static contact 320 when the movable spring 311 moves, or it can avoid that some movable contacts 310 cannot be subjected to uniform force when closing, thereby increasing the contact resistance.

[0186] In this embodiment, by disposing an elastic member 313 between the movable spring body 312 and the pushing member 41 , the pushing member 41 can achieve an overtravel, and the movable contact 311 can be more reliably closed with the static contact 320 .

[0187] In this embodiment, the pusher 41 directly pushes the moving end 316 of the moving spring body 312 to drive the moving contact 311 to disconnect from the static contact 320, and the breaking time is shorter, so the arcing time is shorter and the life of the relay 1 is longer.

[0188] In this embodiment, the elastic member 313 is a compression spring connected to the dynamic spring body 312. Compared with the elastic member 313 connected to the dynamic spring body 312 in other ways or other forms of elastic members 313, the elastic member 313 has stronger impact resistance and can prevent the elastic member 313 from being offset relative to the dynamic spring body 312 due to impact.

[0189] In this embodiment, the elastic member 313 and the dynamic spring body 312 are connected to the position of the moving contact 311, so that the force of the elastic member 313 during deformation can be more effectively transmitted to the moving contact 311, the moving contact 311 can be more reliably closed with the static contact 320, and the load capacity of the relay 1 is higher.

[0190] In this embodiment, the two support members 230 are fixed relative to the coil assembly 210 and are respectively located on both sides of the coil assembly 210 along the Y-axis direction, and can effectively support the armature assembly 220 so that the armature assembly 220 can rotate relative to the coil assembly 210 .

[0191] In this embodiment, the connection hole 231 on the support member 230 and the protrusion 217 on the magnetic drive end 216 are plugged and matched along the Y-axis direction, so that the support member 230 can be more accurately positioned relative to the yoke 215. Since the support member 230 is the movement reference of the armature assembly 220, when the armature assembly 220 rotates relative to the coil assembly 210, the suction portion 226 can be more accurately suctioned with the magnetic drive end 216.

[0192] In this embodiment, the armature assembly 220 also includes a permanent magnet 221, and the two armatures 222 are respectively connected to the two magnetic poles of the permanent magnet 221, so that the relay 1 has a magnetic holding function. The relay 1 can be controlled to change and maintain the open or closed state only through a pulse electrical signal, saving electric energy.

[0193] In this embodiment, the main body 223, two convex shafts 224, the swinging part 225, two armatures 222 and the permanent magnet 221 are integrally formed by insert injection molding. The armature assembly 220 is easier to manufacture and is less likely to cause loss of motion stroke due to tolerance accumulation.

[0194] In this embodiment, the movable spring group 31 extends along the X-axis direction, which can reduce the height of the contact part 30 along the Z-axis direction, which is more conducive to saving space of the relay 1 along the Z-axis direction, and is also conducive to increasing the contact gap between the moving contact 311 and the static contact 320 along the Z-axis direction, thereby improving the voltage resistance of the relay 1.

[0195] In this embodiment, the two slide grooves 113 are respectively slidably matched with the pusher 41 along the Z-axis direction, and the groove walls of the two slide grooves 113 are limitedly matched with the pusher along the Y-axis direction and the X-axis direction. It can improve the certainty of the movement direction of the pusher 41, restrict the freedom of the pusher 41 in other directions, and make it less likely for the pusher 41 to move or deform along the X-axis direction and the Y-axis direction when subjected to uncertain impact, thereby improving the reliability of the relay 1.

[0196] In this embodiment, the groove wall surface of the slide groove 113 is farthest from the bottom of the other slide groove 113 along the Y-axis direction and is located at the arc segment 113b, which is more conducive to resisting the impact force of the pushing member 41 along the Y-axis direction, so that the impact force is dispersed to the shell 10, and the arc segment 113b can automatically correct the posture of the pushing member 41 when the pushing member 41 is subjected to an impact force of uncertain direction.

[0197] In this embodiment, the straight section 113a is provided to facilitate the guiding of the pusher 41 when it is inserted into the slide groove 113 along the Z-axis direction. The distance between the vertex of the retracted section 113c and the straight section 113a is smaller than the diameter of the arc section 113b, and the sector angle of the arc section 113b is greater than 180 degrees, which can maintain the stability of the arc section 113b and make the arc section 113b not easily deformed.

[0198] In this embodiment, the housing 10 is provided with a slide groove 113 that slides with the sliding fitting part 411 of the pushing member 41. The two slide grooves 113 slide with the sliding fitting part 41 along the Z-axis direction respectively. The groove wall surfaces of the two slide grooves 113 are limitedly fitted with the two sliding fitting parts 41 along the Y-axis direction and the X-axis direction. In addition, the groove wall surfaces of the slide grooves 113 are provided with an inward portion 113c, so that when the pushing member 41 deflects on the plane formed by the X-axis and the Y-axis, the deflection amount is effectively limited, which can improve the certainty of the movement direction of the pushing member 41, constrain the freedom of the pushing member 41 in other directions, and make the pushing member less likely to displace or deform when it is impacted in an uncertain direction, thereby improving the reliability of the relay 1.

[0199] In this embodiment, the dimension of the sliding fitting portion 411 along the X-axis direction is larger than the thickness of the base 410 along the X-axis direction, which is more conducive to the sliding fitting portion 411 and the slide groove 113 having the same fitting clearance, so that the push member 41 is less likely to deflect along the X-axis direction to cause jamming and change the contact point with the movable spring 310 to avoid the travel of the movable contact 311 deviating from the design purpose, ensuring the spacing between the movable contact 311 and the static contact 320, thereby ensuring the voltage resistance of the relay 1.

[0200] In this embodiment, an inner concave portion 411a is provided on the arc surface of the sliding fitting portion 411 that is suitable for extending into the slide groove 113, so that the contact area between the sliding fitting portion 411 and the groove wall surface of the slide groove 113 is smaller, less prone to friction or jamming, and smoother sliding.

[0201] In this embodiment, the third load terminal 33c is partially located below the sliding fitting portion 411, which is beneficial to increase the flow area of ​​the third load terminal 33c as the common terminal 330, achieve greater load-bearing capacity, and reduce heat generation. The first intersection 229 is located above the rotation axis Q, that is, the swing portion 225 is biased upward relative to the main body 223, so that the sliding fitting portion 411 is not easy to interfere with the load terminal 33 located below it, and the movement stroke of the pusher 41 is easier to ensure, which can increase the distance between the moving contact 311 and the static contact 320 and enhance the pressure resistance.

[0202] In the present embodiment, all positions where the push member 41 contacts the swinging portion 225 are closer to the rotation axis Q along the X-axis direction than the second matching hole 413 (i.e., the position where the push member 41 contacts the moving spring assembly 31), which is beneficial for reducing the movement stroke of the push member 41 along the Z-axis direction while ensuring the spacing between the moving contact 311 and the static contact 320, and is particularly beneficial for lowering the highest point of the movement stroke of the push member 41, which is beneficial for ensuring that the highest point does not exceed the highest point of the coil assembly 210, and thus is beneficial for saving the height of the relay 1 in the Z-axis direction.

[0203] In this embodiment, the first matching hole 412 has a first abutting portion 414 and a second abutting portion 415 respectively on both sides along the Z-axis direction from top to bottom, which are suitable for abutting against the swinging portion 225, and the first abutting portion 414 and the second abutting portion 415 are both turned outward from the hole wall of the first matching hole 412 along the X-axis direction, so that the contact point between the swinging portion 225 and the pushing member 41 can move along the turning method, which is beneficial to reduce the scraping between the swinging portion 225 and the pushing member 41 made of metal or the base 410 of the pushing member 41.

[0204] In this embodiment, by providing the first abutting portion 414 and the second abutting portion 415 turned outward along the X-axis direction, it is advantageous to make the pusher 41 thinner, and it can also ensure that it always correctly abuts against the swinging portion 25, which is advantageous to realize the miniaturization of the relay 1 and is also advantageous for the swinging portion 225 to always abut against the second abutting portion 415 at the lowest point, thereby ensuring that when the pusher 41 enters the overtravel through the elastic member 313 after the moving contact 311 contacts the static contact 320, the overtravel is along the travel direction of the pusher 41, so that the moving contact always reliably presses against the static contact. The surfaces of the first abutting portion 414 and the second abutting portion 415 suitable for contacting with the swinging portion 225 are both smooth curved surfaces, the friction coefficient between the pusher 41 and the swinging portion 225 is smaller, and the life of the swinging portion 225 is longer.

[0205] In this embodiment, the surfaces of the first abutting portion 414 and the second abutting portion 415 suitable for contacting the swinging portion 225 are both smooth curved surfaces, the friction coefficient between the pushing member 41 and the swinging portion 225 is smaller, and the life of the swinging portion 225 is longer.

[0206] In this embodiment, the pusher 41 is partially bent between the first abutment portion 414 and the second abutment portion 415, which can reduce the size of the pusher 41 along the Z-axis direction, and is more conducive to realizing the above-mentioned function when the space in the Z-axis direction is small. In particular, when the swing portion 225 is biased upward relative to the main body 223, since the distance along the X-axis direction when the swing portion 225 swings upward to the highest point and swings downward to the lowest point will become larger, the pusher 41 is partially bent between the first abutment portion 414 and the second abutment portion 415, so that when the swing portion 225 swings upward to the highest point and swings downward to the lowest point, it can properly abut with the first abutment portion 414 and the second abutment portion 415, so that the moving contact 311 can be correctly closed or disconnected with the static contact 320.

[0207] In this embodiment, when the pushing member 41 is partially bent between the first abutment portion 414 and the second abutment portion 415, the outward directions of the first abutment portion 414 and the second abutment portion 415 diverge from each other, which is beneficial for making the contact point between the swing portion 225 and the first abutment portion 414 and the second abutment portion 415 closer along the X-axis direction, thereby avoiding a large reciprocating force on the pushing member 41 along the X-axis direction when the swing portion 225 drives the pushing member 41 to move.

[0208] In this embodiment, the magnetic circuit part 20, the contact part 30 and the push part 40 are all attached to the base 11, and the movement relationship between them is more accurate with the base 11 as the reference. The packaging is realized by covering the base 11 along the Z-axis direction, and the assembly is simpler.

[0209] In this embodiment, the support member 230 is not only plugged and matched with the protrusion 217 of the magnetic drive end 216 along the Y-axis direction, but also plugged and matched with the slot 113 of the housing 10 along the Z-direction. The degree of freedom of the support member 230 is completely restricted, which is more conducive to supporting the armature assembly 220, so that the rotation axis Q of the armature assembly 220 will not move along the X-axis direction, and when the relay 1 is impacted, the armature assembly 220 with a larger mass can transmit the impact force to the support member 230 through the convex shaft 224, and the support member 230 then transmits the force to the housing 10, so that the components are not easily displaced relative to each other.

[0210] In the present embodiment, since the swing portion 225 and the movable spring assembly 31 are respectively plugged into the first matching hole 413 and the second matching hole 413 on the pushing member 41 in directions substantially opposite to each other, the base 11 is divided into a first base body 110 and a second base body 120. The first base body 110 forms a first assembly 51 with the magnetic circuit portion 20 and the pushing portion 40, and the second base body 120 forms a second assembly 51 with the contact portion 30. The first assembly 51 and the second assembly 52 are plugged in and matched along the X-axis direction, so that the movable spring assembly 31 is inserted into the second matching hole 413 along the X-axis direction during the plug-in and matching process. This can make the relay 1 under the configuration of the present application easier to assemble, and can prevent the swing portion 225 and the movable spring assembly 31 from being simultaneously plugged in and matched with the pushing member 41 in directions substantially opposite to each other.

[0211] In this embodiment, the first clamping block 118 and the second clamping block 126 are engaged with each other, so that the first assembly 51 and the second assembly 52 will not be separated from each other along the X-axis direction before being fixed to the cover.

[0212] In this embodiment, the load terminal 33 is limited along the Z-axis direction with the first limit block 115 and the second limit block 116, so that the first assembly 51 and the second assembly 52 are fixed relative to each other along the Z-axis direction. The load terminal 33 is inserted between the first limit block 115 and the second limit block 116 along the X-axis direction, which can increase the flow area of ​​the load terminal 33 and help improve the load capacity.

[0213] In this embodiment, the load terminal 33 is matched with the first limit block 115 and the second limit block 116 in the Z-axis direction, and the length of the second limit block 116 and the load terminal 33 in the X-axis direction is less than the length of the first limit block 115 and the load terminal 33 in the X-axis direction, which is conducive to the end of the second assembly 52 away from the first assembly 51 in the X-axis direction by deflecting downward relative to the first assembly 51, so that the second clamping block 126 and the first clamping block 118 are disengaged, so that the first assembly 51 and the second assembly 52 can be quickly disassembled. At the same time, since the length of the first limit block 115 and the load terminal in the X-axis direction is relatively large, the part where the second assembly 52 and the first assembly 51 are plugged into each other is less likely to sink due to the downward impact force in the Z-axis direction, avoiding the plugged-in part from becoming a weak point after the relay 1 is assembled.

[0214] In this embodiment, the insert block 122 cooperates with the corresponding two second limiting blocks 116 along the Y-axis direction to limit the first assembly 51 and the second assembly 52 relative to each other along the Y-axis direction.

[0215] In this embodiment, the first clamping block 118 is disposed on the side of the second limiting block 116, and the second clamping block 126 is disposed on the side of the inserting block 122, so that the connection strength between the first clamping block 118 and the second clamping block 126 is greater and less likely to be disengaged.

[0216] In this embodiment, the portion of the pusher 41 suitable for contacting the dynamic spring group 31 is made of metal. In other embodiments, the portion of the pusher 41 suitable for contacting and pushing the moving contact 311 of the dynamic spring 310 and the static contact 320 to close is made of metal. Therefore, when the external current load is large and causes the dynamic spring group 31 to generate a large amount of heat, compared with the technical solution of using plastic material for the portion in contact with the dynamic spring group 31, it can avoid the pusher 41 from softening or even melting due to the heat of the dynamic spring group 31, causing the closing stroke of the dynamic spring group 31 to be inconsistent with the design, resulting in a decrease in the load capacity of the relay 1, thereby improving the load capacity and reliability of the relay 1.

[0217] In this embodiment, the portion of the pusher 41 that contacts the movable spring assembly 31 and the portion that contacts the armature assembly 220 are both formed on the base 410 . The base 410 is made of metal, which can also prevent the pusher 41 from softening or even melting due to the heat generated by the movable spring assembly 31 .

[0218] In this embodiment, the sliding fit portion 411 slides with the housing 10, which can improve the certainty of the movement direction of the push member 41, constrain the freedom of the push member 41 in other directions, and make the push member less likely to displace or deform when impacted in an uncertain direction, thereby improving the reliability of the relay 1.

[0219] In this embodiment, the sliding fitting part 411 is made of plastic material, which is easier to slide with the housing 10 made of the same plastic material, and is not easy to produce scraps to cause jamming or deflection. The sliding fitting part 411 and the base 410 are integrally molded by insert injection molding, with higher dimensional accuracy and smaller dimensional tolerance.

[0220] In this embodiment, when the substrate 41 is a stainless steel sheet metal part, it is easier to process and shape, has a simpler structure, higher strength, and is more conducive to miniaturized design; when the substrate 41 is an aluminum casting or an aluminum alloy casting, it is easier to process and shape, has a lower density, higher strength, and lower cost.

[0221] In this embodiment, the other two load terminals 33 except the common terminal 330 are arranged along the Y-axis direction, which is consistent with the arrangement direction of each dynamic spring group 31 and is easier to connect with the dynamic spring group 31.

[0222] In this embodiment, the portion of the common terminal 330 that extends downward is located in the middle of the base 11 along the Y-axis direction, so that the space utilization rate is higher.

[0223] In this embodiment, each load terminal 33 is provided with a connection portion 331 perpendicular to the Z-axis direction, so that the load terminal 33 can be laid flat along the X-axis and the Y-axis, which can not only reduce the height of the relay 1 along the Z-axis direction, but also increase the current-carrying area of ​​the load terminal 33, improve the load capacity of the relay 1, and is particularly suitable for use in a large current environment, such as a large current environment with a load current of 80A. At this time, by providing a common terminal 330, the structure of the relay 1 can be made more compact and occupy less space when the multi-channel control function is realized in a large current environment.

[0224] In this embodiment, by arranging the connection parts 331 of the three load terminals 33 in two layers along the Z-axis direction, all switches 34 are located between the two layers of connection parts 331, which is beneficial to reducing the height of the relay 1 along the Z-axis direction and fully utilizing the space in the X-axis direction and the Y-axis direction.

[0225] In this embodiment, the connecting portion 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333 extending away from each other along the X-axis direction and respectively corresponding to the magnetic circuit units, so that the common terminal 330 has a larger current-carrying area when occupying one of the two layers along the Z-axis direction.

[0226] In this embodiment, the connection parts 331 of the two other load terminals 33 are farther away from the magnetic circuit part than the first arm and the second arm along the X-axis direction. Therefore, the three load terminals 33 use less materials, have lower costs, and have a more compact structure.

[0227] In this embodiment, the assembly method of the relay 1 can prevent the swing portion 225 and the movable spring assembly 31 from being plugged into the pusher 41 in directions opposite to each other at the same time.

[0228] In this embodiment, the magnetic circuit unit 21 is assembled first, and then the magnetic circuit unit 21 and the corresponding pushing member 41 are mounted to the first seat body 110 along the Z-axis direction, so that when the magnetic circuit part 20 and the pushing part 40 are assembled to the first seat body 110, it is mainly carried out along the Z-axis direction, and the assembly process is simpler.

[0229] Embodiment 2

[0230] See also Fig.25 , Fig.25 FIG. 4 shows the pusher 41 in the second embodiment. Fig.25 As shown, in this embodiment, the pusher 41 also has a base 410 and two sliding fitting parts 411, but the pusher 41 is made of metal as a whole, and can be made of stainless steel sheet metal, aluminum casting or aluminum alloy casting. In this embodiment, a casting aluminum process is used. Since the sliding fitting part 411 is made of metal, the inner wall of the slide groove 113 in contact with the sliding fitting part 411 can be made of metal to avoid scraping. The other parts of this embodiment are the same as those of the first embodiment.

[0231] In this embodiment, the pushing member 41 is made entirely of metal, which has higher strength and is less susceptible to being affected by the heat generated by the dynamic spring assembly.

[0232] In this embodiment, when the pusher 41 is a stainless steel sheet metal part, it is easier to process and shape, has a simpler structure, higher strength, and is more conducive to miniaturized design; when the pusher is an aluminum casting or an aluminum alloy casting, it is easier to process and shape, has a lower density, higher strength, and lower cost.

[0233] The other parts of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0234] Embodiment 3

[0235] See also Fig.26 and Fig. 27 , Fig.26 and Fig. 27 FIG. 2 shows the internal structure of the relay 1 in the third embodiment. Fig.26 and Fig. 27As shown, the difference between this embodiment and the first embodiment is that the base 11 in this embodiment is no longer divided into a first base body 110 and a second base body 120, but is connected as a whole. The end of the base 11 away from each load terminal 33 along the X-axis direction is provided with a plug-in slot extending along the X-axis direction, and the base 11 is no longer provided with a slot 112. During assembly, the base 11, the contact portion 30 and the push portion 40 together form a third assembly 53. In each magnetic circuit unit 21, the connection hole 231 of the support member 230 is interference-fitted with the corresponding protrusion 217. When each magnetic circuit unit 21 is assembled to the third assembly 53, the coil frame 211 of each magnetic circuit unit 21 is plugged and matched with the plug-in slot on the base 11 along the X-axis direction. After each magnetic circuit unit 21 is plugged in place, the swing portion 225 extends into the first matching hole 412 away from the rotation axis Q. After being plugged in place, the third assembly 53 is limitedly matched with each magnetic circuit unit 21 along the Z-axis direction and the Y-axis direction. Afterwards, the cover body is placed on the base 11 and each magnetic circuit unit 21 so that the cover body is arranged outside each coil frame 211 along the X-axis direction. The base 11 and the cover body can prevent the magnetic circuit unit 21 from detaching from the third assembly 53 along the X-axis direction.

[0236] The assembly method in this embodiment is another assembly method of the relay 1 under this configuration. The magnetic circuit unit 21 is plugged and matched with the base 11 along the X-axis direction, so that the swing part 225 can be away from the rotation axis Q and extend into the first matching hole. It can also avoid that the swing part 225 and the movable spring group 31 are plugged with the pusher 41 in directions opposite to each other at the same time. In this case, the coil terminal 211 no longer penetrates the base 11, but only penetrates the coil frame 211. When the cover body is fixedly connected to the base 11, the cover body is arranged outside the coil frame 211 along the X-axis direction, which can prevent the coil frame 211 from detaching from the third assembly 53 along the X-axis direction.

[0237] In this embodiment, the support member 230 is prevented from being assembled to the base 11 along the Z-axis direction by interference fit between the support member 230 and the protrusion 217, so that the entire magnetic circuit unit 21 can be smoothly assembled to the third assembly 53 along the X-axis direction.

[0238] The other parts of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0239] Embodiment 4

[0240] See also Fig.28 , Fig.28 The relay 1 in the fourth embodiment is shown. Fig.28As shown, the present embodiment is different from the first embodiment in that the base 11 includes a third base body 130 and a fourth base body 140, the coil assembly 210 is fixed to the third base body 130 along the Z-axis direction, each coil terminal 213 passes through the third base body 130 along the Z-axis direction, and the slot 112 is provided in the third base body 130. The slide slot 113 is provided in the fourth base body 140, and each load terminal 33 passes through the fourth base body 140 along the Z-axis direction. The third base body 130 and the magnetic circuit part 20 together form a fourth assembly 54, and the fourth base body 140 and the pushing part 40 and the contact part 30 together form a fifth assembly 55. The fourth assembly 54 and the fifth assembly 55 are plugged in the X-axis direction. After being plugged in place, the swinging part 225 extends into the first matching hole 412 along the X-axis direction, and the third base body 130 and the fourth base body 140 are snap-fitted in the X-axis direction, and the fourth assembly 54 and the fifth assembly 55 are limitedly matched with each other in the Y-axis direction and the Z-axis direction. The specific snap-fitting and limiting fitting methods may be the same as those in the first embodiment.

[0241] This embodiment provides another assembly method based on the relay structure of the same configuration as that of the first embodiment, which can also prevent the swing portion 225 and the movable spring assembly 31 from being plugged into the pusher 41 in directions opposite to each other at the same time.

[0242] The other parts of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0243] Embodiment 5

[0244] See also Fig.29 , Fig.29 The relay 1 in the fifth embodiment is shown. Fig.29As shown, the present embodiment is different from the first embodiment in that the base 11 includes a fifth base body 150, a sixth base body 160 and a seventh base body 170, the coil assembly 210 is fixedly connected to the fifth base body 150 along the Z-axis direction, each coil terminal 213 passes through the fifth base body 150 along the Z-axis direction, and the slot 112 is arranged on the fifth base body 150. The slide groove 113 is arranged on the sixth base body 160. Each load terminal 33 passes through the seventh base body 170 along the Z-axis direction. The fifth base body 150 and the magnetic circuit part 20 together form a sixth assembly 56; the sixth base body 160 and the pushing part 40 together form a seventh assembly 57, and the seventh base body 170 and the magnetic circuit part 30 together form an eighth assembly 58. The sixth assembly 56, the seventh assembly 57 and the eighth assembly 58 are plugged in along the X-axis direction. After being plugged in place, the movable spring assembly 31 extends into the second matching hole 415 along the X-axis direction, the swinging portion 225 extends into the first matching hole 414 along the X-axis direction, the fifth seat body 150 and the sixth seat body 160 are snap-fitted, and the sixth assembly 56 and the seventh assembly 57 are position-limited to each other along the Y-axis direction and the Z-axis direction, the sixth seat body 160 and the seventh seat body 170 are snap-fitted, and the seventh assembly 57 and the eighth assembly 58 are position-limited to each other along the Y-axis direction and the Z-axis direction. In this embodiment, the plug-in fit can be concentrated between the fifth seat body 150 and the sixth seat body 160, and between the sixth seat body 160 and the seventh seat body 170. The snap-fitting method can be the same as that of the first embodiment.

[0245] This embodiment provides another assembly method based on the relay structure of the same configuration as that of the first embodiment, which can also prevent the swing portion 225 and the movable spring assembly 31 from being plugged into the pusher 41 in directions opposite to each other at the same time.

[0246] The other parts of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0247] Embodiment 6

[0248] See also Fig.30 and Fig.31 , Fig.30 The contact portion 30 of the relay 1 in the sixth embodiment is shown. Fig.31 FIG. 1 shows a schematic diagram of the electrical structure of the relay 1 of the seventh embodiment. Fig.30As shown, in this embodiment, the first load terminal 33a is still connected to the first moving spring group 31a, the second load terminal 33b is connected to the second static contact group 32b, the first arm 322 of the third load terminal 33c is connected to the first static contact group 32a, and the second arm 333 of the third load terminal 33c is connected to the second moving spring group 31b, so that the third load terminal 33c forms a common terminal 330. The connection portion 331 of the third load terminal 33c as the common terminal 330 is located below the connection portions 331 of the other two load terminals 33 along the Z-axis direction, and the connection portions 331 of the other two load terminals 33 are located in the same plane along the Z-axis direction. The first arm 332 connected to the first static contact group 32a is closer to the magnetic circuit portion 20 than the second arm 333 connected to the second moving spring group 31b along the X-axis direction. In this embodiment, in this embodiment of the third load terminal 33c, the moving contact group 31c of the first moving spring group 31a is closed with the first static contact group 32a downward along the Z-axis direction, and is disconnected from the first static contact group 32a upward along the Z-axis direction. The moving contact group 31d of the second moving spring group 31b is closed with the second static contact group 32b upward along the Z-axis direction, and is disconnected from the second static contact group 32b downward along the Z-axis direction.

[0249] In this embodiment, at least one load terminal 33 is connected to the movable spring group 31 in at least one switch 34 and the static contact group 32 in at least one other switch 34 to form a common terminal 330. Specifically, Fig.23 As shown, the first magnetic circuit unit 21a controls the first switch 34a through the first pushing member 41a, the first moving spring group 31a in the first switch 34a is connected to the first load terminal 33a, and the first static contact group 32a in the first switch 34a is connected to the third load terminal 33c, so that the first switch 34a can independently control the on-off between the first load terminal 33a and the third load terminal 33c; the second magnetic circuit unit 21b controls the second switch 34b through the second pushing member 41b, the second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second static contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on-off between the third load terminal 33c and the second load terminal 33b.

[0250] The other parts of this embodiment are the same as those of the first embodiment and will not be described again.

[0251] Embodiment 7

[0252] See also Fig.32 and Fig.33 , Fig.32 The internal structure of the relay 1 in the seventh embodiment is shown. Fig.33 The electrical structure diagram of the relay 1 in the seventh embodiment is shown.

[0253] The base 11 (not shown in the figure) in this embodiment is no longer divided into a first base body 110 and a second base body 120, but is connected as a whole.

[0254] like Fig.32 As shown, in this embodiment, the push portion 225 extends from the main body 223 parallel to the extension direction of the armature 222. In this embodiment, at least one load terminal 33 is connected to at least two movable spring groups 31 at the same time to form a common terminal 330. Specifically, the first load terminal 33a is connected to the first static contact group 32a, the second load terminal 33b is connected to the second static contact group 32b, and the third load terminal 33c is connected to the first movable spring group 31a and the second movable spring group 31b to form a common terminal.

[0255] like Fig.32 As shown, in this embodiment, the first dynamic spring group 31a and the second dynamic spring group 31b both extend along the Z-axis direction and are opposite to the corresponding static contact group 32 along the X-axis direction.

[0256] like Fig.32 As shown, in this embodiment, the pusher 41 moves along the X-axis direction. Specifically, the pusher 225 is inserted into the first assembly hole 412 along the Z-axis direction, and each movable spring assembly 31 is inserted into the second assembly hole 413 along the Z-axis direction.

[0257] like Fig.32 As shown, the swinging portion 225 swings away from the rotation axis Q along the X-axis direction, drives the pusher 41 to move away from the rotation axis Q along the X-axis direction, and drives the moving contact group 314 in the moving spring group 31 to close with the corresponding static contact group 32. Correspondingly, the swinging portion 225 swings close to the rotation axis Q along the X-axis direction, drives the pusher 41 to move close to the rotation axis Q along the X-axis direction, and drives the moving contact group 314 in the moving spring group 31 to disconnect with the corresponding static contact group 32.

[0258] like Fig.33 As shown, the first magnetic circuit unit 21a controls the first switch 34a through the first pushing member 41a, the first moving spring group 31a in the first switch 34a is connected to the third load terminal 33c, and the first static contact group 32a in the first switch 34a is connected to the first load terminal 33a, so that the first switch 34a can independently control the on-off between the first load terminal 33a and the third load terminal 33c; the second magnetic circuit unit 21b controls the second switch 34b through the second pushing member 41b, the second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second static contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on-off between the third load terminal 33c and the second load terminal 33b.

[0259] In this embodiment, the pusher 41 moves along the X-axis direction, so that the dynamic spring group 31 extends along the Z-axis direction, which can reduce the board area occupied by the entire relay 1 (the projected area along the Z-axis direction). When the height direction of the relay 1 is not strictly restricted, the electrical density of the circuit board can be higher. At the same time, since the dynamic spring group 31 and the swing part 225 can cooperate with the pusher 41 along the Z-axis direction, the assembly of the relay 1 in this embodiment is simpler. The guidance of the pusher 41 can be solved by the hook structure on the swing part 225 and the dynamic spring group 31, or by adding a pressure block to the cover body.

[0260] The other parts of this embodiment are the same as those of the first embodiment and will not be described again.

[0261] Embodiment 8

[0262] See also Fig.34 and Fig.35 . Fig.34 The internal structure of the relay 1 in the eighth embodiment is shown. Fig.35 The electrical structure diagram of the relay 1 in the seventh embodiment is shown.

[0263] The same parts of this embodiment as those of the seventh embodiment will not be described in detail. The following describes the differences between the eighth embodiment and the seventh embodiment.

[0264] like Fig.34 As shown, in this embodiment, the first load terminal 33a is connected to the first moving spring group 31a, the second load terminal 33b is connected to the second static contact group 32b, and the third load terminal 33c is connected to the first static contact group 32a (not shown in the figure) and the second moving spring group 31b to form a common terminal 330. In this embodiment, the closing direction of the first moving spring group 31a and the first static contact group 32a (not shown in the figure) and the closing direction of the second moving spring group 31b and the second static contact group 32b are both in the X-axis direction, but opposite to each other.

[0265] like Fig.35 As shown, the first magnetic circuit unit 21a controls the first switch 34a through the first pushing member 41a, the first moving spring group 31a in the first switch 34a is connected to the first load terminal 33a, and the first static contact group 32a in the first switch 34a is connected to the third load terminal 33c, so that the first switch 34a can independently control the on-off between the first load terminal 33a and the third load terminal 33c; the second magnetic circuit unit 21b controls the second switch 34b through the second pushing member 41b, the second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second static contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on-off between the third load terminal 33c and the second load terminal 33b.

[0266] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. A relay, characterized in that include: case; A magnetic circuit portion, which is attached to the housing and includes at least two magnetic circuit units; and The contact part is attached to the housing and comprises a movable spring group, a stationary contact group and a load terminal; the movable spring group and the stationary contact group are both arranged corresponding to the magnetic circuit unit, and each movable spring group is provided with a movable contact group corresponding to the stationary contact group; each movable spring group and the corresponding stationary contact group jointly form a switch; the movable spring group and the stationary contact group in each switch are respectively connected to different load terminals, and at least one load terminal is shared by at least two switches and forms a common terminal; the movable spring group is driven by the corresponding magnetic circuit unit to close or open the movable contact group and the corresponding stationary contact group.

2. A relay as claimed in claim 1, characterized in that: It also includes a pushing part, which includes a pushing member accommodated in the shell, the pushing member is arranged corresponding to the magnetic circuit unit, and the pushing member is driven by the corresponding magnetic circuit part to drive the corresponding dynamic spring group.

3. A relay as claimed in claim 1 or 2, characterized in that: At least one load terminal is simultaneously connected to at least two static contact groups or at least two dynamic spring groups to form the common terminal; or, at least one load terminal is simultaneously connected to the dynamic spring group in at least one switch and the static contact group in at least one other switch to form the common terminal.

4. A relay as claimed in claim 2, characterized in that: Each magnetic circuit unit is arranged along the Y-axis direction, and each magnetic circuit unit includes a coil assembly and an armature assembly, the coil assembly is fixed relative to the housing and includes a coil winding and a coil terminal electrically connected to the coil winding, the winding axis of the coil winding extends along the Z-axis direction, and the armature assembly rotates relative to the coil assembly around a rotation axis extending along the Y-axis direction; each coil winding and each armature assembly are accommodated in the housing, and the coil terminal extends downward along the Z-axis direction; The contact part and the magnetic circuit part are arranged along the X-axis direction; each switch is accommodated in the housing, and each load terminal extends downward along the Z-axis direction; Each pusher is arranged along the Y-axis direction, and is driven by the corresponding armature assembly to move along the X-axis direction or the Z-axis direction to drive the corresponding moving contact group to close or open with the corresponding static contact group along the movement direction of the pusher.

5. A relay as claimed in claim 1, 2 or 4, characterized in that: Each moving spring group includes at least one moving spring, each moving spring is provided with at least one moving contact, all moving contacts in the same moving spring group form a moving contact group, and the static contact group corresponding to the moving contact group is provided with static contacts corresponding to all moving contacts in the moving contact group.

6. A relay as claimed in claim 5, characterized in that: The dynamic spring group includes at least two dynamic springs, each dynamic spring is provided with a dynamic contact point, the dynamic springs in the same dynamic spring group are arranged along the Y-axis direction, and the dynamic contacts in the same dynamic spring group are arranged along the Y-axis direction.

7. A relay as claimed in claim 5, characterized in that: The movable spring also includes a movable spring body and an elastic member, the movable spring body is provided with a fixed end and a moving end, the fixed end is connected to the load terminal, the moving end is away from the fixed end along the extension direction of the movable spring body, the movable contact is fixedly connected to the movable spring body and close to the moving end, one end of the elastic member is connected to the movable spring body, and the other end is suitable for being pushed by a pushing member; the pushing member drives the moving end to move by pushing the elastic member so that the moving contact is closed with the corresponding static contact, and drives the moving contact to disconnect with the corresponding static contact by pushing the moving end.

8. A relay as claimed in claim 7, characterized in that: The elastic member is a compression spring, one end of the elastic member is connected to the dynamic spring body at the location of the dynamic contact, and the other end of the elastic member forms a gap along the moving direction of the dynamic pusher.

9. A relay as claimed in claim 4, characterized in that: The magnetic circuit unit also includes a support member fixed relative to the coil assembly and located in the shell, the coil assembly also includes a coil frame, an iron core and a yoke, the coil winding is wound around the coil frame, the coil terminal is fixed to the coil frame, the iron core extends along the Z-axis direction and is inserted into the coil frame, the number of yokes in each magnetic circuit unit is two, the two yokes are arranged along the Z-axis direction, one end of each yoke is connected to the iron core, and the other end forms a magnetic drive end, the two magnetic drive ends drive the armature assembly to rotate by converting the magnetic polarity, the number of support members in each magnetic circuit unit is two, the two support members are respectively located on both sides of the coil assembly along the Y-axis direction and are used to support the armature assembly.

10. A relay as claimed in claim 9, characterized in that: Each magnetic drive end is provided with protrusions on both sides along the Y-axis direction, and each support member is provided with two connecting holes along the Z-axis direction suitable for corresponding plug-in matching with the two protrusions located on the same side along the Y-axis direction; each armature assembly includes an armature, a main body, a convex shaft and a swinging part fixed to each other; the number of armatures in each armature assembly is two, and the extension directions of the two armatures are parallel to each other, each armature part is located in the main body, and the two ends of each armature extend out of the main body respectively and form a suction part suitable for being attracted to the corresponding magnetic drive end, the number of convex shafts in each armature assembly is two and extend away from each other from both sides of the main body along the Y-axis direction, and the swinging part extends out of the main body perpendicular to the Y-axis direction to match with the pushing member; each support member is provided with an axial hole rotatably matched with the corresponding convex shaft, and the axial hole is located between the two connecting holes along the Z-axis direction.

11. A relay as claimed in claim 10, characterized in that: The armature assembly also includes a permanent magnet disposed in the main body, and two armatures are respectively connected to two magnetic pole surfaces of the permanent magnet; the main body, convex shaft and swinging part are all made of plastic material, and the main body, convex shaft, swinging part, armature and permanent magnet insert are integrally formed by injection molding.

12. A relay as claimed in claim 10, characterized in that: The pusher moves along the Z-axis direction, the extending direction of the swinging portion is perpendicular to the extending direction of the armature, and the movable spring assembly extends along the X-axis direction.

13. A relay as claimed in claim 12, characterized in that: The pushing member is provided with a first matching hole and a second matching hole along the Z-axis direction, the second matching hole is for the movable spring group to extend toward the winding axis along the X-axis direction, and the first matching hole is for the swinging part to extend in a direction opposite to the direction in which the movable spring group extends into the second matching hole; the pushing member is provided with sliding matching parts on both sides along the Y-axis direction, and the shell is provided with two sliding grooves that are respectively slidably matched with the corresponding sliding matching parts along the Z-axis direction.

14. A relay as claimed in claim 12, characterized in that: The moving contact group is closed with the corresponding static contact group downward along the Z-axis direction; on the first projection plane perpendicular to the Z-axis direction, the projection of the sliding fitting part at least partially overlaps with the projection of at least one load terminal; along the Z-axis direction, the first intersection is located above the rotation axis, the first intersection is the intersection of the first plane and the first straight line, the first plane is a plane passing through the rotation axis and parallel to the extension direction of the armature, and the first straight line is a straight line perpendicular to the first plane made through the contact point between the swinging part and the pushing member when the moving contact group is closed with the corresponding static contact group.

15. A relay as claimed in claim 13 or 14, characterized in that: All positions where the pusher contacts the swinging portion are closer to the rotation axis than the second matching hole along the X-axis direction.

16. A relay as claimed in claim 15, characterized in that: The first matching hole has a first abutting portion suitable for being abutted upward by the swinging portion and a second abutting portion suitable for being abutted downward by the swinging portion on both sides along the Z-axis direction; the first abutting portion and the second abutting portion are both turned outward from the hole wall of the first matching hole along the X-axis direction; the surfaces of the first abutting portion and the second abutting portion suitable for contacting with the swinging portion are both smooth curved surfaces.

17. A relay as claimed in claim 16, characterized in that: The portion of the pusher between the first abutment portion and the second abutment portion is bent in an upward direction toward a direction closer to the rotation axis, the first abutment portion and the second abutment portion are turned outward in directions away from the rotation axis.

18. A relay as claimed in claim 10, characterized in that: The pusher moves along the X-axis direction, the extending direction of the swinging portion is parallel to the extending direction of the armature, and the movable spring assembly extends along the Z-axis direction.

19. A relay as claimed in claim 18, characterized in that: The pusher is provided with a first matching hole for the swinging part to extend into along the Z-axis direction and a second matching hole for the moving spring assembly to extend into along the Z-axis direction along the X-axis direction.

20. A relay as claimed in claim 13, characterized in that: The shell includes a base and a cover body, the magnetic circuit part, the contact part and the pushing part are all mounted on the base, each coil terminal and each load terminal penetrates the base downward along the Z-axis direction, the cover body is downwardly covered on the base along the Z-axis direction and fixedly connected to the base; the slide groove is arranged on the base, and the base is provided with a slot corresponding to the supporting member, and the supporting member is inserted into the corresponding slot downward along the Z-axis direction.

21. A relay as claimed in claim 20, characterized in that: The base includes a first base body and a second base body, the coil assembly is fixedly connected to the first base body along the Z-axis direction, each coil terminal passes through the first base body along the Z-axis direction, the slide groove and the slot are arranged on the first base body, and each load terminal passes through the second base body along the Z-axis direction; the first base body, the magnetic circuit part and the pushing part together form a first assembly, the second base body and the contact part together form a second assembly, the first assembly and the second assembly are plugged in along the X-axis direction, after being plugged in place, the dynamic spring group extends into the second matching hole along the X-axis direction, the first base body and the second base body are snap-fitted along the X-axis direction, and the first assembly and the second assembly are limitedly matched with each other along the Y-axis direction and the Z-axis direction.

22. A relay as claimed in claim 21, characterized in that: The first seat body is provided with a first limit block, a second limit block and a first clamping block along the X-axis direction toward the second seat body, the second seat body is provided with a second clamping block along the X-axis direction toward the first seat body, the first limit block is located above the second limit block along the Z-axis direction, after the first assembly and the second assembly are plugged into place along the X-axis direction, the first clamping block and the second clamping block are clamped and matched along the X-axis direction, at least one of the load terminals is inserted between the first limit block and the second limit block along the X-axis direction, and is limitedly matched with the first limit block and the second limit block along the Z-axis direction.

23. A relay as claimed in claim 22, characterized in that: The load terminal is loosely matched with the first limit block and the second limit block along the Z-axis direction, and the length of the second limit block matching with the load terminal along the X-axis direction is less than the length of the first limit block matching with the load terminal along the X-axis direction, so that when the first assembly or the second assembly is subjected to a downward force along the Z-axis direction, the end of the second assembly away from the first assembly is allowed to deflect downward relative to the first assembly until the second clamping block is disengaged from the first clamping block along the X-axis direction.

24. A relay as claimed in claim 22, characterized in that: There are at least two second limit blocks, each of which is arranged along the Y-axis direction, and a first interval is formed between at least two adjacent second limit blocks along the Y-axis direction. The second seat body is provided with an insert block suitable for extending into the first interval along the X-axis direction. After the second assembly is plugged into place with the first assembly along the X-axis direction, the insert block cooperates with the corresponding two second limit blocks in a limited manner along the Y-axis direction; the two second limit blocks forming the first interval between each other are provided with the first clamping block on one side adjacent to each other, and the second clamping blocks corresponding to the first clamping block are provided on both sides of the insert block along the Y-axis direction.

25. A relay as claimed in claim 20, characterized in that: The base, the contact portion and the pushing portion together form a third combination, and each magnetic circuit unit is plugged into and matched with the base along the X-axis direction. After the magnetic circuit unit is plugged into place, the swing portion extends into the first matching hole away from the rotation axis, and the cover body is arranged outside the coil frame along the X-axis direction to prevent the magnetic circuit unit from detaching from the third combination along the X-axis direction; the support member is interference fit with the corresponding protrusion.

26. A relay as claimed in claim 20, characterized in that: The base includes a third base body and a fourth base body, the coil assembly is fixedly connected to the third base body along the Z-axis direction, each coil terminal passes through the third base body along the Z-axis direction, the slot is arranged on the third base body, the slide groove is arranged on the fourth base body, and each load terminal passes through the fourth base body along the Z-axis direction; the third base body and the magnetic circuit part together form a fourth assembly, the fourth base body and the pushing part and the contact part together form a fifth assembly, the fourth assembly and the fifth assembly are plugged in along the X-axis direction, after being plugged in place, the swing part extends into the first matching hole along the X-axis direction, the third base body and the fourth base body are snap-fitted along the X-axis direction, and the fourth assembly and the fifth assembly are limitedly fitted to each other along the Y-axis direction and the Z-axis direction.

27. A relay as claimed in claim 20, characterized in that: The base includes a fifth base body, a sixth base body and a seventh base body, the coil assembly is fixedly connected to the fifth base body along the Z-axis direction, each coil terminal passes through the fifth base body along the Z-axis direction, the slot is arranged on the fifth base body, the slide groove is arranged on the sixth base body, and each load terminal passes through the seventh base body along the Z-axis direction; the fifth base body and the magnetic circuit part together form a sixth assembly; the sixth base body and the pushing part together form a seventh assembly; the seventh base body and the magnetic circuit part together form an eighth assembly; the sixth assembly, the seventh assembly and the eighth assembly are plugged in along the X-axis direction, and after being plugged in place, the dynamic spring group extends into the second matching hole along the X-axis direction, and the swing part extends into the first matching hole along the X-axis direction, the fifth base body is snap-fitted with the sixth base body, and the sixth assembly and the seventh assembly are limitedly matched with each other along the Y-axis direction and the Z-axis direction, the sixth base body is snap-fitted with the seventh base body, and the seventh assembly and the eighth assembly are limitedly matched with each other along the Y-axis direction and the Z-axis direction.

28. A relay as claimed in claim 4, characterized in that: The portion of the pusher that is suitable for contacting the dynamic spring assembly is made of metal.

29. A relay as claimed in claim 28, characterized in that: The pushing member is made of metal.

30. A relay as claimed in claim 29, characterized in that: The pushing member is a stainless steel sheet metal member or an aluminum casting member or an aluminum alloy casting member.

31. A relay as claimed in claim 28, characterized in that: The pushing member includes a base and a sliding fitting portion, the portion of the pushing member in contact with the movable spring assembly and the portion in contact with the armature assembly are both formed on the base, the base is made of metal, the sliding fitting portion is fixedly connected to both sides of the base along the Y-axis direction, and the sliding fitting portion is slidingly fitted with the shell along the movement direction of the pushing member; the sliding fitting portion is made of plastic material, and the sliding fitting portion and the base insert are injection molded as one piece.

32. A relay as claimed in claim 31, characterized in that: The base is a stainless steel sheet metal part or an aluminum casting, and the dimension of the sliding fitting part along the X-axis direction is greater than the thickness of the base along the X-axis direction.

33. A relay as claimed in claim 4, characterized in that: The number of the magnetic circuit units is two, and the number of the load terminals is three.

34. A relay as claimed in claim 33, characterized in that: Among the load terminals, the other two load terminals except the common terminal are arranged along the Y-axis direction.

35. A relay as claimed in claim 34, characterized in that: The portion of the common terminal extending downward is located in the middle of the base along the Y-axis direction.

36. A relay as claimed in claim 34, characterized in that: The pusher moves along the Z-axis direction, and the dynamic spring group extends along the X-axis direction; each load terminal is provided with a connecting portion perpendicular to the Z-axis direction, and the connecting portion is used to connect the static contact group and / or the dynamic spring group; the connecting portion of the common terminal is located above or below the connecting portions of the other two load terminals along the Z-axis direction, and the connecting portions of the other two load terminals are located in the same plane along the Z-axis direction.

37. A relay as claimed in claim 36, characterized in that: The portion of the common terminal extending downward is located in the middle of the base along the Y-axis direction; the connecting portion of the common terminal is provided with a first arm and a second arm, which extend away from each other along the X-axis direction and are respectively arranged corresponding to two magnetic circuit units.

38. A relay as claimed in claim 37, characterized in that: The first arm and the second arm are located at the same position along the X-axis direction, the first arm and the second arm are both connected to the static contact group or are both connected to the dynamic spring group, and the positions of the first arm and the second arm along the X-axis direction are closer to the magnetic circuit part than the connection parts of the two other load terminals; or, the first arm and the second arm are respectively connected to the static contact group and the dynamic contact group; the first arm connected to the static contact group is closer to the magnetic circuit part along the X-axis direction.

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