Relay

Abstract

The utility model 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

[0002] In the prior art, a relay is used to control the on-off of an external circuit. Generally, one relay is equivalent to one controlled switch in a circuit. With the further development of electronic and electrical applications, two or more switches are often arranged in a relatively small area, which requires the use of two or more relays. However, due to the packaging of relays and other factors, two or more independent relays need to be set up to realize the function of two or more switches, which requires a large space. CONTENT OF THE UTILITY MODEL

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

[0004] To achieve the above-mentioned purpose, the following technical solutions are adopted:

[0005] The first technical solution relates to a relay, which comprises a housing, a magnetic circuit part attached to the housing and comprising at least two magnetic circuit units, and a contact part attached to the housing and comprising a moving contact group, a stationary contact group and a load terminal; the moving contact group and the stationary contact group are correspondingly arranged with the magnetic circuit units, each moving contact group is provided with a corresponding stationary contact group; each moving contact group and the corresponding stationary contact group form a switch; the moving contact group and the stationary contact group in each switch are connected to different load terminals, at least one load terminal is shared by at least two switches and forms a common terminal; the moving contact group is driven by the corresponding magnetic circuit unit to make the moving contact group and the corresponding stationary contact group close or open.

[0006] The second technical solution is based on the first technical solution, and further comprises a pushing part, the pushing part comprises a pushing member accommodated in the housing, the pushing member is correspondingly arranged with the magnetic circuit units, and the pushing member is driven by the corresponding magnetic circuit part to drive the corresponding moving contact group.

[0007] The third technical solution is based on the first or second technical solution, wherein at least one load terminal is connected to at least two stationary contact groups or at least two moving contact groups and forms the common terminal; or at least one load terminal is connected to the moving contact group in at least one switch and the stationary contact group in a switch whose moving contact group is not connected to the load terminal, and forms 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 comprises a coil assembly and an armature assembly, the coil assembly is fixed relative to the shell and comprises 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 about 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 the corresponding stationary contact group along the movement direction of the pusher.

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

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

[0011] The seventh technical solution is based on the fifth technical solution, wherein the moving spring further comprises a moving spring body and an elastic member, the moving 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 moving spring body, the moving contact is fixed to the moving spring body and close to the moving end, one end of the elastic member is connected to the moving spring body, and the other end is adapted to be pushed by the pusher; the pusher drives the moving end to move by pushing the elastic member to make the moving contact close to the corresponding stationary contact, and drives the moving contact to open the corresponding stationary 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 moving spring body at the position of the moving contact, and the other end of the elastic member forms a gap along the movement direction of the pusher.

[0013] The ninth technical solution is based on the fourth technical solution, wherein the magnetic circuit unit further comprises a support fixed relative to the coil assembly and located in the shell, the coil assembly further comprises a coil frame, a core and a yoke, the coil winding is wound on the coil frame, the coil terminal is fixed to the coil frame, the core extends along the Z-axis direction and is inserted into the coil frame, the number of the yoke 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 core, and the other end forms a magnetic driving end, the two magnetic driving ends drive the armature assembly to rotate by converting the magnetic polarity, the number of the support in each magnetic circuit unit is two, and the two supports are located on the two sides of the coil assembly along the Y-axis direction and are used to support the armature assembly.

[0014] The tenth technical solution is based on the ninth technical solution, wherein each magnetic driving end is provided with a protrusion on the two sides along the Y-axis direction, and each support is provided with two connecting holes along the Z-axis direction, which are adapted to be inserted and matched with the two protrusions located on the same side along the Y-axis direction; each armature assembly comprises an armature, a main body, a protruding shaft and an oscillating part which are fixed to each other; the number of the armature in each armature assembly is two, the extension directions of the two armatures are parallel to each other, each armature is partially located in the main body, and the two ends of each armature extend out of the main body and form an attraction part adapted to be attracted to the corresponding magnetic driving end; the number of the protruding shaft in each armature assembly is two and extends out of the main body from the two sides along the Y-axis direction away from each other, and the oscillating part extends out of the main body perpendicular to the Y-axis direction to cooperate with the pushing piece; each support is provided with a shaft hole in rotation cooperation with the corresponding protruding shaft, and the shaft 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 further comprises a permanent magnet located in the main body, and the two armatures are connected to the two magnetic poles of the permanent magnet; the main body, the protruding shaft and the oscillating part are all made of plastic material, and the main body, the protruding shaft, the oscillating part, the armature and the permanent magnet are integrally formed by insert injection molding.

[0016] The twelfth technical solution is based on the tenth technical solution, wherein the pushing piece moves along the Z-axis direction, the extension direction of the oscillating part is perpendicular to the extension direction of the armature, and the moving spring group extends along the X-axis direction.

[0017] The thirteenth technical solution is based on the twelfth technical solution, wherein the pushing piece is arranged with a first matching hole and a second matching hole along the Z-axis direction, the second matching hole is used for the moving spring group to extend into along the X-axis direction towards the winding axis, and the first matching hole is used for the oscillating part to extend into in a direction opposite to the direction in which the moving spring group extends into the second matching hole; the pushing piece is provided with a sliding cooperation part on the two sides along the Y-axis direction, and the shell is provided with two sliding grooves in sliding cooperation with the corresponding sliding cooperation 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 stationary contact group in the downward direction along the Z-axis direction; the projection of the sliding fitting part at least partially overlaps the projection of at least one load terminal on the first projection plane remaining in the Z-axis direction; along the Z-axis direction, the first intersection point is above the rotation axis, the first intersection point being the intersection point of the first plane and the first straight line, the first plane being a plane extending through the rotation axis and parallel to the extension direction of the armature, and the first straight line being a straight line perpendicular to the first plane and passing through the contact point between the swing part and the pushing piece when the moving contact group is closed with the corresponding stationary contact group.

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

[0020] The sixteenth technical solution is based on the fifteenth technical solution, wherein the first fitting hole is provided with a first abutting part adapted to be upwardly abutted by the swing part and a second abutting part adapted to be downwardly abutted by the swing part on two sides along the Z-axis direction; the first abutting part and the second abutting part are outwardly folded along the X-axis direction from the hole wall of the first fitting hole; the surfaces of the first abutting part and the second abutting part adapted to be contacted by the swing part are both smooth curved surfaces.

[0021] The seventeenth technical solution is based on the sixteenth technical solution, wherein the part of the pushing piece between the first abutting part and the second abutting part is bent in the upward direction to a direction closer to the rotation axis, the outward folding directions of the first abutting part and the second abutting part are away from each other, and the first abutting part is outwardly folded away from the rotation axis.

[0022] The eighteenth technical solution is based on the tenth technical solution, wherein the pushing piece moves along the X-axis direction, the extension direction of the swing part is parallel to the extension direction of the armature, and the moving spring group extends along the Z-axis direction.

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

[0024] The twentieth technical solution is based on the thirteenth technical solution, wherein the housing comprises a base and a cover, the magnetic circuit part, the contact part and the pushing part are attached to the base, each coil terminal and each load terminal penetrates the base downward along the Z-axis direction, the cover is downwardly provided on the base along the Z-axis direction and is fixedly connected with the base; the sliding groove is arranged on the base, the base is provided with a insertion slot corresponding to the supporting piece, and the supporting piece is inserted into the corresponding insertion slot along the Z-axis direction.

[0025] The twenty-first technical solution is based on the twentieth technical solution, wherein the base comprises a first seat body and a second seat body, the coil assembly is fixed to the first seat body along the Z-axis direction, each coil terminal penetrates the first seat body along the Z-axis direction, the sliding slot and the insertion slot are arranged on the first seat body, and each load terminal penetrates the second seat body along the Z-axis direction; the first seat body, the magnetic circuit part and the pushing part jointly form a first combined body, the second seat body and the contact part jointly form a second combined body, the first combined body and the second combined body are inserted along the X-axis direction, after being inserted into position, the moving spring group extends into the second matching hole along the X-axis direction, the first seat body and the second seat body are clamped and matched along the X-axis direction, and the first combined body and the second combined body are limited and matched with 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 limiting block, a second limiting block and a first clamping block along the X-axis direction towards the second seat body, the second seat body is provided with a second clamping block along the X-axis direction towards the first seat body, the first limiting block is located above the second limiting block along the Z-axis direction, after the first combined body and the second combined body are inserted along the X-axis direction into position, the first clamping block and the second clamping block are clamped and matched along the X-axis direction, at least one load terminal is inserted between the first limiting block and the second limiting block along the X-axis direction, and is limited and matched with the first limiting block and the second limiting 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 limiting block and the second limiting block along the Z-axis direction, the length of the second limiting block matched with the load terminal along the X-axis direction is less than the length of the first limiting block matched with the load terminal along the X-axis direction, so that one end of the second combined body away from the first combined body is allowed to deflect downward relative to the first combined body when the first combined body or the second combined body is subjected to a force downward along the Z-axis direction until the second clamping block and the first clamping block are disengaged 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 limiting blocks is at least two, each second limiting block is arranged along the Y-axis direction, and at least two adjacent second limiting blocks form a first interval along the Y-axis direction, the second seat body is provided with an insertion block adapted to extend into the first interval along the X-axis direction, after the second combined body and the first combined body are inserted along the X-axis direction into position, the insertion block is limited and matched with the corresponding two second limiting blocks along the Y-axis direction; the two second limiting blocks forming the first interval are each provided with the first clamping block on one side adjacent to each other, and the insertion block is provided with the second clamping block corresponding to the first clamping block on both sides along the Y-axis direction.

[0029] The twenty-fifth technical solution is based on the twentieth technical solution, wherein the base, the contact portion and the pushing portion jointly form a third assembly, each magnetic circuit unit is inserted and matched with the base along the X-axis direction, after the magnetic circuit unit is inserted in place, the swing portion extends into the first matching hole away from the rotation axis, and the cover body is arranged around the coil holder along the X-axis direction to prevent the magnetic circuit unit from being separated from the third assembly along the X-axis direction.

[0030] The twenty-sixth technical solution is based on the twentieth technical solution, wherein the base comprises 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 penetrates the third seat body along the Z-axis direction, the insertion slot is arranged on the third seat body, the sliding slot is arranged on the fourth seat body, and each load terminal penetrates the fourth seat body along the Z-axis direction; the third seat body and the magnetic circuit portion jointly form a fourth assembly, the fourth seat body and the pushing portion and the contact portion jointly form a fifth assembly, the fourth assembly and the fifth assembly are inserted along the X-axis direction, after being inserted in place, the swing portion extends into the first matching hole along the X-axis direction, the third seat body and the fourth seat body are clamped and matched along the X-axis direction, and the fourth assembly and the fifth assembly are limited and matched with each other along the Y-axis direction and the Z-axis direction.

[0031] The twenty-seventh technical solution is based on the twentieth technical solution, wherein the base comprises 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 penetrates the fifth seat body along the Z-axis direction, the insertion slot is arranged on the fifth seat body, the sliding slot is arranged on the sixth seat body, and each load terminal penetrates the seventh seat body along the Z-axis direction; the fifth seat body and the magnetic circuit portion jointly form a sixth assembly; the sixth seat body and the pushing portion jointly form a seventh assembly; the seventh seat body and the magnetic circuit portion jointly form an eighth assembly; the sixth assembly, the seventh assembly and the eighth assembly are inserted along the X-axis direction, after being inserted in place, the moving spring group extends into the second matching hole along the X-axis direction, the swing portion extends into the first matching hole along the X-axis direction, the fifth seat body and the sixth seat body are clamped and matched, and the sixth assembly and the seventh assembly are limited and matched with each other along the Y-axis direction and the Z-axis direction, the sixth seat body and the seventh seat body are clamped and matched, and the seventh assembly and the eighth assembly are limited and matched 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 part of the pushing member adapted to contact the moving spring group 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 part or an aluminum alloy casting part.

[0035] The thirty-first technical solution is based on the twenty-eighth technical solution, wherein the pushing component includes a base and a sliding engagement portion. The portion of the pushing component that contacts the moving spring assembly and the portion that contacts the armature assembly are both formed in the base. The base is made of metal. The sliding engagement portion is fixed to both sides of the base along the Y-axis direction. The sliding engagement portion and the housing slide in engagement along the movement direction of the pushing component. The sliding engagement portion is made of plastic. The sliding engagement portion and the base insert are integrally injection molded.

[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 part, and the dimension of the sliding mating part along the X-axis is greater than the thickness of the substrate along the X-axis.

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

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

[0039] The thirty-fifth technical solution is based on the thirty-fourth technical solution, wherein 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 moving spring assembly extends along the X-axis direction; each load terminal is provided with a connecting part perpendicular to the Z-axis direction, the connecting part being used to connect the stationary contact assembly and / or the moving spring assembly; the connecting part of the common terminal is located above or below the connecting parts of the two load terminals other than the common terminal along the Z-axis direction, and the connecting parts of the two load terminals other than the common terminal are located on the same plane 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, the first arm and the second arm extending away from each other along the X-axis direction and respectively 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, and both the first arm and the second arm are connected to a stationary contact group or both are connected to a moving spring group, and the position of the first arm and the second arm along the X-axis is closer to the magnetic circuit part than the connection part of the two load terminals other than the common terminal; or, the first arm and the second arm are respectively connected to a stationary contact group and a moving contact group; the first arm connected to the stationary contact group is closer to the magnetic circuit part along the X-axis.

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

[0044] In the first technical scheme, the magnetic circuit part and the contact part are both attached to the shell, and the magnetic circuit part includes at least two magnetic circuit units, the moving spring group, the static contact and the pusher are all arranged correspondingly with the magnetic circuit units. Therefore, at least two switches capable of being independently controlled are packaged in one relay shell. Compared with the prior art, the material of the shell is saved, and the packaging volume of the relay is reduced. When realizing the function of more than two switches, the occupied space is smaller than that of the prior art.

[0045] In the first technical scheme, the at least one load terminal is shared by the at least two switches to form a common terminal. Through the common terminal, the number of load terminals is reduced, the integration of the load terminals is improved, and the space occupation is further reduced, thereby reducing the cost. The load terminal can be flexibly connected between each moving spring group and static contact group, and can be applied to most scenes.

[0046] In the first technical scheme, the common terminal is a load terminal, which can be selected to be electrically connected to an external circuit or not to be electrically connected to an external circuit. When the external circuit is connected, at least two external circuits can be controlled through the common terminal, or a parallel relationship is established, or a total circuit and a branch circuit are controlled. When the external circuit is not electrically connected, the common terminal becomes a component bridging two or more switches, so that two or more switches form a series relationship. Therefore, it can be flexibly applied to various scenes by different wiring methods. Since each switch is controlled respectively, such series or parallel relationship makes two switches form an "and" or "or" logical relationship, which can not only be applied to simple logical calculation, but also be applied to scenes with higher safety and reliability requirements to avoid uncontrolled switches due to failure of a single functional part formed by a magnetic circuit unit, a pusher, a moving spring group and a static contact group.

[0047] The third technical scheme respectively discloses three basic electrical connection relationships inside the relay. The customer demand, especially the loading mode of the external circuit, can be selected to make the relay have greater versatility.

[0048] In the fourth technical scheme, each coil terminal and each load terminal extends downward along the Z-axis direction, which is convenient for electrical connection with the circuit board.

[0049] In the fifth technical scheme, 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, the magnetic circuit units are arranged along the Y-axis direction, the moving spring groups are arranged along the Y-axis direction, the pushers are arranged along the Y-axis direction, and the magnetic circuit parts and the contact parts 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, and each functional part does not need to be staggered in space with each other, thereby reducing the structural complexity and assembly difficulty.

[0051] In the sixth technical solution, the moving spring group includes at least two moving springs, so that the total contact resistance between the moving contact and the static contact can be reduced, the heat generation can be reduced, and the power consumption can be reduced.

[0052] In the sixth technical solution, each moving spring is provided with one moving contact, which can avoid that some moving contacts cannot be effectively closed with the static contact when the moving spring moves, or can avoid that some moving contacts increase the contact resistance when being closed due to uneven force.

[0053] In the seventh technical solution, the elastic member is arranged between the moving spring body and the pusher, so that the pusher can realize overstroke, and the moving contact can be more reliably closed with the static contact.

[0054] In the seventh technical solution, the pusher directly pushes the moving end of the moving spring body to drive the moving contact to be disconnected with the static contact, so that the disconnection time is shorter, the arc drawing time is shorter, and the relay has a longer service life.

[0055] In the eighth technical solution, the elastic member is a compression spring connected to the moving spring body, which has stronger impact resistance than other forms of elastic members or other ways of connecting the elastic member to the moving spring body, and can avoid that the elastic member is offset relative to the moving spring body due to impact.

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

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

[0058] In the tenth technical solution, the connecting hole on the supporting member and the protruding part on the magnetic driving end are inserted and matched along the Y-axis direction, so that the supporting member can be more accurately positioned relative to the yoke. Since the supporting member is the movement reference of the armature assembly, when the armature assembly rotates relative to the coil assembly, the suction part can be more accurately sucked to the magnetic driving end.

[0059] In the eleventh technical solution, the armature assembly further comprises a permanent magnet, and the two armatures are connected with two magnetic pole surfaces of the permanent magnet, so that the relay has a magnetic retention function, and only needs to be controlled by a pulse electric signal to change and maintain the open or closed state, thereby saving electric energy.

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

[0061] In the twelfth technical solution, the moving spring group extends along the X-axis direction, so that the height of the contact part along the Z-axis direction can be reduced, 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 and improving the voltage resistance of the relay.

[0062] In the thirteenth technical solution, the shell is provided with a sliding groove in sliding cooperation with the sliding cooperation part of the pushing piece, so that the determinacy of the movement direction of the pushing piece can be improved, and the degree of freedom of the pushing piece in other directions is constrained, so that the pushing piece is less likely to displace or deform when subjected to impact in an uncertain direction, thereby improving the reliability of the relay.

[0063] In the fourteenth technical solution, the load terminal part is located below the sliding cooperation part, which is conducive to increasing the flow area of the load terminal and realizing greater carrying capacity, and is also conducive to reducing the heat generation. The first intersection point is located above the rotation axis, that is, the swing part is upwardly biased relative to the main body, so that the sliding cooperation part is less likely to interfere with the load terminal located below the sliding cooperation part, the movement stroke of the pushing piece is more easily ensured, the distance between the moving contact and the static contact can be increased, and the voltage resistance can be enhanced.

[0064] In the fifteenth technical solution, all positions at which the pushing piece contacts the swing part are closer to the rotation axis along the X-axis direction than the second cooperation hole (i.e., the position at which the pushing piece contacts the moving spring group), which is conducive to reducing the movement stroke of the pushing piece along the Z-axis direction while ensuring the distance between the moving contact and the static contact, and is particularly conducive to reducing the highest point of the movement stroke of the pushing piece, so as to prevent the highest point from exceeding the highest point of the coil assembly, thereby saving the height of the relay along the Z-axis direction.

[0065] In the sixteenth technical solution, the two sides of the first cooperation hole along the Z-axis direction are respectively provided with a first abutting part adapted to be upwardly abutted by the swing part and a second abutting part adapted to be downwardly abutted by the swing part, and the first abutting part and the second abutting part are both outwardly turned from the hole wall of the first cooperation hole along the X-axis direction, so that the contact point of the swing part and the pushing piece can move along the outward turning direction, which is conducive to reducing the scraping between the swing part and the pushing piece or the base body made of metal.

[0066] In the sixteenth technical solution, the first abutting part and the second abutting part are outwardly turned along the X-axis direction, which is beneficial to make the pushing piece thinner, and can ensure that the pushing piece always abuts against the swing part correctly, and is beneficial to realize the miniaturization of the relay and to ensure that the swing part can always abut against the second abutting part at the lowest point, so that when the moving contact and the stationary contact are in contact and the pushing piece enters the overstroke through the elastic piece, the overstroke distance along the movement direction of the pushing piece is ensured, and the moving contact can always reliably abut against the stationary contact.

[0067] In the sixteenth technical solution, the surfaces of the first abutting part and the second abutting part adapted to contact the swing part are both smooth curved surfaces, the friction coefficient between the pushing piece and the swing part is smaller, and the service life of the swing part is higher.

[0068] In the seventeenth technical solution, the part of the pushing piece between the first abutting part and the second abutting part is bent, which can reduce the size of the pushing piece along the Z-axis direction, and is more beneficial to realize the above functions in the case of small space along the Z-axis direction. In particular, when the swing part is upwardly biased relative to the main body, the distance along the X-axis direction between the highest point of the upward swing of the swing part and the lowest point of the downward swing of the swing part will be larger, and the part of the pushing piece between the first abutting part and the second abutting part is bent, which is beneficial to ensure that the swing part can correctly abut against the first abutting part and the second abutting part when the swing part swings upward to the highest point and swings downward to the lowest point, and the moving contact can correctly close or open the stationary contact.

[0069] In the eighteenth technical solution, when the part of the pushing piece between the first abutting part and the second abutting part is bent, the outward turning directions of the first abutting part and the second abutting part are away from each other, which is beneficial to make the contact points of the swing part and the first abutting part and the second abutting part closer along the X-axis direction, and to avoid that the swing part drives the pushing piece to move and generates a larger reciprocating force along the X-axis direction on the pushing piece.

[0070] In the eighteenth technical solution, the movement of the pushing piece along the X-axis direction makes the moving spring group extend along the Z-axis direction, which can reduce the board area (the projection area along the Z-axis direction) of the entire relay, and in the case that the height direction of the relay is not strictly limited, the electrical density of the circuit board can be higher.

[0071] In the nineteenth technical solution, the swing part and the moving spring group respectively extend into the first matching hole and the second matching hole along the Z-axis direction, and 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 attached to the base, and the movement relationship among them is more accurate with the base as the reference. The packaging is realized by covering the base along the Z-axis direction by the cover, and the assembly is simpler.

[0073] In the twentieth technical solution, the supporting member is not only inserted and matched with the protruding part of the magnetic driving end along the Y-axis direction, but also inserted and matched with the slot of the shell along the Z-axis direction, the freedom of the supporting member is completely limited, which is more conducive to supporting the armature assembly, so that the rotating axis of the armature assembly cannot move along the X-axis direction, and when the relay is impacted, the armature assembly with large mass can transmit the impact force to the supporting member through the protruding shaft, and the supporting member can transmit the force to the shell, so that the relative displacement between the components is not easy to occur.

[0074] In the twenty-first technical solution, the base is divided into a first seat body and a second seat body, the first seat body forms a first combined body with the magnetic circuit part and the pushing part, the second seat body forms a second combined body with the contact part, and the first combined body and the second combined body are inserted and matched along the X-axis direction, so that the dynamic spring group is inserted into the second matching hole along the X-axis direction during the insertion and matching process, which can make the relay of the present application more easily assembled, and can avoid the swing part and the dynamic spring group being inserted into the pushing member along the opposite directions at the same time.

[0075] In the twenty-first technical solution, the first combined body and the second combined body are prevented from being separated from each other along the X-axis direction before being fixed with the cover body through the clamping cooperation.

[0076] In the twenty-second technical solution, the first combined body and the second combined body are fixed relative to each other along the Z-axis direction through the load terminal and the first limiting block and the second limiting block along the Z-axis direction limiting cooperation. The load terminal is inserted between the first limiting block and the second limiting block along the X-axis direction, which can increase the flow area of the load terminal and improve the load capacity.

[0077] In the twenty-third technical solution, the load terminal is gap cooperated with the first limiting block and the second limiting block along the Z-axis direction, and the length of the cooperation between the second limiting block and the load terminal along the X-axis direction is less than the length of the cooperation between the first limiting block and the load terminal along the X-axis direction, which is conducive to the end of the second combined body away from the first combined body along the X-axis direction to deflect downward relative to the first combined body, so that the second clamping block and the first clamping block are separated from each other, thereby the first combined body and the second combined body can be quickly disassembled. At the same time, since the length of the cooperation between the first limiting block and the load terminal along the X-axis direction is large, the positions of the second combined body and the first combined body inserted with each other are less likely to sink due to the impact force along the Z-axis direction, thereby avoiding the positions of the insertion with each other to become weak points after the relay is assembled.

[0078] In the twenty-fourth technical solution, the insertion block is limiting cooperated with the corresponding two second limiting blocks along the Y-axis direction, so that the first combined body and the second combined body are fixed 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 limiting block, and the second clamping block is arranged on the side of the insertion block, so that the connection strength of the first clamping block and the second clamping block is greater, and the first clamping block and the second clamping block are less likely to be separated.

[0080] The twenty-fifth technical solution is a second assembly mode of the relay in the same configuration. The magnetic circuit unit and the base are inserted and matched in the X-axis direction, so that the swing part extends 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 fixed to the base, the cover body is arranged outside the coil frame in the X-axis direction, which can prevent the coil frame from being separated from the third combination in the X-axis direction.

[0081] In the twenty-fifth technical solution, the supporting member is in interference fit with the protruding part, which avoids the assembly of the supporting member to the base in the Z-axis direction, so that the magnetic circuit unit can be smoothly assembled to the third combination in the X-axis direction.

[0082] The twenty-sixth technical solution and the twenty-seventh technical solution are a third and a fourth assembly mode of the relay in the same configuration.

[0083] In the twenty-eighth technical solution, the part of the pushing member adapted to contact the moving spring group is made of metal material. Therefore, when the external current load is large, causing the moving spring group to generate a large amount of heat, compared with the technical solution in which the part adapted to contact the moving spring group is made of plastic material, the pushing member can avoid softening or even melting due to the heat generated by the moving spring group, so that the closing stroke of the moving spring group does not match the design, thereby improving the load capacity and reliability of the relay.

[0084] In the twenty-ninth technical solution, the pushing member is made of metal material as a whole, which has higher strength and is less likely to be affected by the heat generated by the moving spring group.

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

[0086] In the thirty-first technical solution, the part of the pushing member adapted to contact the moving spring and the part adapted to contact the armature assembly are both formed on the base, and the base is made of metal material, which can also avoid softening or even melting of the pushing member due to the heat generated by the moving spring group. The sliding fit part is in sliding fit with the shell, which can improve the certainty of the movement direction of the pushing member, constrain the freedom of the pushing member in other directions, so that the pushing member is less likely to displace or deform when subjected to impact 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 plastic material and is not easy to produce scratches to cause jamming or deflection. The sliding fitting part is integrally formed with the base insert by injection molding, which has higher dimensional accuracy and smaller dimensional tolerance.

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

[0089] In the thirty-second technical solution, the size 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 sliding fitting part and the sliding groove having the same gap, so that the pushing piece is less likely to deflect along the X-axis direction to cause jamming and change the contact point with the moving spring to avoid the travel of the moving contact point deviating from the design purpose, ensuring the distance between the moving contact point and the stationary contact point, thereby ensuring the voltage resistance of the relay.

[0090] The thirty-third technical solution is the simplest structure embodiment of the third technical solution.

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

[0092] In the thirty-fifth technical solution, the part 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 moving spring groups, and has higher space utilization.

[0093] In the thirty-sixth technical solution, each load terminal is provided with a connection part perpendicular to the Z-axis direction, so that the load terminal can be laid flat along the X-axis and Y-axis, which not only reduces the height of the relay along the Z-axis direction, but also increases the current carrying area of the load terminal and improves 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 providing the common terminal, the structure of the relay is more compact and occupies less space when realizing the requirement of multi-way control function 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, and 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 point and the stationary contact point along the Z-axis direction, thereby improving the voltage resistance of the relay.

[0094] In the thirty-sixth technical solution, the connection parts of the three load terminals are arranged in two layers along the Z-axis direction, so that all the switches are located between the two layers of connection parts, which is conducive to reducing the height of the relay along the Z-axis direction and fully utilizing the space along the X-axis direction and the Y-axis direction.

[0095] In the thirty-seventh technical solution, the connecting part 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 corresponding to the magnetic circuit units respectively, 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 embodiments of the thirty-seventh technical solution, cooperating with the arrangement of the pushers along the Y-axis direction, so that the relay can fully utilize the two-layer space in the plane perpendicular to the Z-axis direction to realize a larger load capacity. Among them, the first arm and the second arm are connected to the static contact group or the moving spring group, which is a better embodiment, because the connecting part of the two load terminals except the common terminal is farther away from the magnetic circuit part along the X-axis direction than the first arm and the second arm, so that the three load terminals are more economical in material and lower in cost, and the structure is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0097] In order to more clearly illustrate the technical solutions of the embodiments, the following briefly introduces the drawings needed to be used:

[0098] Figure 1 is a perspective view of the relay in embodiment one except the cover body;

[0099] Figure 2 is a perspective view of the first seat body in embodiment one;

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

[0101] Figure 4 is a perspective view of the second seat body in embodiment one; Figure 3

[0102] Figure 5 is a perspective view of the magnetic circuit unit in embodiment one;

[0103] Figure 6 is a perspective view of the magnetic circuit unit in embodiment one;

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

[0105] Figure 8 is a perspective view of the support member in embodiment one;

[0106] Figure 9 is a perspective view of the contact part in embodiment one;

[0107] Figure 10 is a perspective view of the third load terminal and each static contact group in embodiment one;

[0108] Figure 11 is a perspective view of the pusher in embodiment one; ​

[0109] Figure 12 This is a top view of the pusher component in Embodiment 1;

[0110] Figure 13 for Figure 12 A magnified view of part B;

[0111] Figure 14 This is a schematic diagram showing the cooperation relationship between the pusher and the first seat in Embodiment 1;

[0112] Figure 15 for Figure 14 Enlarged view of part C;

[0113] Figure 16 This is a perspective view of the relay in Embodiment 1, excluding the cover.

[0114] Figure 17 for Figure 16 Enlarged view of part D;

[0115] Figure 18 This is a schematic diagram of the relay electrical structure in Example 1;

[0116] Figure 19 This is a schematic diagram of the relay structure in Example 1 when both switches are in the open state;

[0117] Figure 20 This is a schematic diagram of the relay structure in Example 1 when both switches are in the closed state;

[0118] Figure 21 This is a perspective view of the first assembly in Embodiment 1;

[0119] Figure 22 This is a perspective view of the second assembly in Example 1;

[0120] Figure 23 This is a bottom view of the relay in Embodiment 1;

[0121] Figure 24 for Figure 23 EE-directed sectional view;

[0122] Figure 25 This is a perspective view of the pusher component in Embodiment 2;

[0123] Figure 26 This is a front view of the relay excluding the cover in Embodiment 3;

[0124] Figure 27 This is a right view of the relay excluding the cover in Embodiment 3;

[0125] Figure 28 This is a schematic diagram of the structure of the relay excluding the cover in Example 4;

[0126] Figure 29 Schematic view of the relay of example five, excluding the cover;

[0127] Figure 30 Schematic view of the relay of example six, excluding the cover;

[0128] Figure 31 Schematic view of the relay of example six, excluding the cover;

[0129] Figure 32 Schematic view of the relay of example seven, excluding the cover;

[0130] Figure 33 Schematic view of the relay of example seven, excluding the cover;

[0131] Figure 34 Schematic view of the relay of example eight, excluding the cover;

[0132] Figure 35 Schematic view of the relay of example eight, excluding the cover.

[0133] Explanation of the main reference signs:

[0134] 1、relay; 10, housing; 11, base; 110, first seat; 111, coil holder mounting slot; 112, slot; 113, sliding slot; 113a, straight section; 113b, circular arc section; 113c, inwardly retracted section; 114, coil terminal hole; 115, first limiting block; 116, second limiting block; 117, first interval; 118, first clamping block; 120, second seat; 121, load terminal hole; 122, insertion 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; 160, sixth seat; 170, seventh seat; 20, magnetic circuit portion; 21, magnetic circuit unit; 21a, first magnetic circuit unit; 21b, second magnetic circuit unit; 210, coil assembly; 211, coil holder; 212, coil winding; 213, coil terminal; 214, core; 215, yoke; 216, magnetic drive end; 217, protruding portion; 220, armature assembly; 221, permanent magnet; 222, armature; 223, main body; 224, protruding shaft; 225, oscillating portion; 226, attraction portion; 227, first plane; 228, first straight line; 229, first intersection point; 230, support member; 231, connecting hole; 232, shaft hole; 30, contact portion; 31, moving spring group; 32, stationary contact group; 33, load terminal; 34, switch; 31a, first moving spring group; 31b, second moving spring group; 310, moving spring; 311, moving contact; 312, moving spring body; 313, elastic member; 314, moving contact group; 31c, first moving contact group; 31d, second moving contact group; 315, fixed end; 316, moving end; 32a, first stationary contact group; 32b, second stationary contact group; 320, stationary 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 body; 411, sliding fit portion; 411a, recessed portion; 412, first fit hole; 413, second fit hole; 414, first abutment portion; 415, second abutment portion; 51, first combination; 52, second combination; 53, third combination; 54, fourth combination; 55, fifth combination; 56, sixth combination; 57, seventh combination; 58, eighth combination; P, winding axis; Q, rotation axis. DETAILED DESCRIPTION

[0135] In the claims and specification, the terms "first", "second", or "third" and the like, unless otherwise specified, are used for distinguishing between similar objects, not for describing a particular sequential order.

[0136] In the claims and specification, unless otherwise stated, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicate directions or positions based on the directions and positions shown in the drawings and are used for convenience in simplifying the description only and are not intended in any way as indicating special orientations of the device or element or as constraining the associated devices or elements to a particular spatial arrangement and / or use.

[0137] In the claims and specification, unless otherwise stated, the term "fixedly connected" or "fixed connection" should be interpreted broadly as any connection manner between two objects without displacement relationship and relative rotation relationship, that is, it includes irremovable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0138] In the claims and specification, unless otherwise stated, the terms "comprising", "having" and their variants mean "including but not limited to".

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

[0140] In the claims and specification, unless otherwise stated, the term "provided with" means that the technical feature located after it is part of the technical feature located before it.

[0141] In the claims and specification, unless otherwise stated, the term "extend downward" means that the coil terminal and the load terminal extend downward along the Z-axis direction to the relay body which is collectively constituted by the housing, the coil assemblies, the armature assemblies, the switches and the pushers. When the magnetic circuit unit includes the support members, the support members are also part of the relay body.

[0142] In the claims and specification, unless otherwise stated, the term "group" is a collective concept, that is, the "moving spring group" is a specific collection of moving springs formed by at least one moving spring, the "static contact group" is a specific collection of static contacts formed by at least one static contact, and the "moving contact group" is a specific collection of moving contacts formed by at least one moving contact.

[0143] In the claims and specification, unless otherwise stated, the term "correspondingly provided" means that the number of the two is the same and one-to-one correspondence.

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

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

[0146] In the claims and specification, unless otherwise defined, the term "the first clamping block and the second clamping block are clamped along the X-axis direction" refers to that, in the clamping process, the first clamping block and / or the second clamping block elastically deforms perpendicularly to the X-axis direction until the first clamping block and the second clamping block are inserted into place and the deformation is restored, so that the first clamping block and the second clamping 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 with reference to the drawings.

[0148] Embodiment One

[0149] Referring to Figure 1 , Figure 1 The relay 1 in the embodiment one is shown. As Figure 1 shown, the relay 1 in the embodiment includes a housing 10, a magnetic circuit part 20, a contact part 30 and a pushing part 40.

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

[0151] As Figure 1As shown, the magnetic circuit part 20 includes at least two magnetic circuit units 21, in this embodiment, the number of the magnetic circuit units 21 is two, which are a first magnetic circuit unit 21a and a second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two magnetic circuit units 21 are the same. The contact part 30 includes a moving spring group 31, a stationary contact group 32, and a load terminal 33. In this embodiment, "group" is a collective concept, for example, "the moving spring group 31" is a specific collection of moving springs formed by at least one moving spring, and "the stationary contact group 32" is a specific collection of stationary contacts formed by at least one stationary contact. The number of the moving spring group 31 and the stationary contact group 32 is the same as the number of the magnetic circuit units 21, which is two, and they are correspondingly arranged with the magnetic circuit units 21; specifically, the two moving spring groups 31 include a first moving spring group 31a corresponding to the first magnetic circuit unit 21a and a second moving spring group 31b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two moving spring groups 31 are the same. The two stationary contact groups 32 include a first stationary contact group 32a corresponding to the first magnetic circuit unit 21a and a second stationary contact group 32b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two stationary contact groups 32 are the same. The number of the load terminal 33 is three, which are a first load terminal 33a, a second load terminal 33b, and a third load terminal 33c.

[0152] As shown, Figure 1 The pushing part 40 includes a pushing piece 41. The number of the pushing piece 41 is the same as the number of the magnetic circuit units 21, which is two, and they are correspondingly arranged with the magnetic circuit units 21. Specifically, the two pushing pieces 41 include a first pushing piece 41a corresponding to the first magnetic circuit unit 21a and a second pushing piece 41b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two pushing pieces 41 are the same.

[0153] As shown, Figure 2 , Figure 3 and Figure 4 , Figure 2 , Figure 3 and Figure 4 The first seat body 110 in this embodiment is shown. The first seat body 110 is made of plastic material as a whole. As shown, Figure 2 The first seat body 110 is provided with a coil holder mounting slot 111, two insertion slots 112, and two sliding slots 113 corresponding to each magnetic circuit unit 21. The coil holder mounting slot 111, the two insertion slots 112, and the two sliding slots 113 are sequentially arranged along the X-axis direction and all extend along the Z-axis direction. The coil holder mounting slot 111 and the two insertion slots 112 are used to connect the corresponding magnetic circuit units 21. The two sliding slots 113 are used to connect the corresponding pushing pieces 41. As shown, Figure 3 and Figure 4As shown, the two sliding grooves 113 are provided with openings opposite to each other along the Y-axis direction. The wall surface of each sliding groove 113 is sequentially provided with a flat section 113a, a circular arc section 113b and a converging section 113c. Among them, the flat section 113 of each sliding groove 113 is closer to the coil holder mounting groove 111 along the X-axis direction than the circular arc section 113b and the converging section 113c. The flat section 113 is a plane and is perpendicular to the X-axis direction and away from the coil holder mounting groove 111. The circular arc section 113b is connected to the flat section 113a at one end and connected to the converging section 113c at the other end. The circular arc section 113b is a circular arc surface type, the bottom of the wall surface of the sliding groove 113 along the Y-axis direction is formed on the circular arc section 113b, and in the projection plane perpendicular to the Z-axis direction, at least one straight line passing through the projection center of the circular arc section 113b intersects the projection of the circular arc section 113b at two points. The converging section 113c connects the circular arc section 113b and converges in the direction close to the flat section 113a along the X-axis direction, and the distance between the top end of the converging section 113c along the X-axis direction and the flat section 113a is less than the diameter of the projection of the circular arc section 113b in the projection plane perpendicular to the Z-axis direction. As shown in Figure 2 As shown, at least two coil terminal holes 114 are arranged in the coil holder mounting groove 111, and the number of coil terminal holes 114 in this embodiment is three. Each coil terminal hole 114 is arranged along the Y-axis direction and penetrates the first seat body 110 along the Z-axis direction. The first seat body 110 is provided with a first limiting block 115 and a second limiting block 116 at one end away from the coil holder mounting groove 111 along the X-axis direction, and the first limiting block 115 is located above the second limiting block 116 along the Z-axis direction. The number of first limiting blocks 115 is one, which is located in the middle of the first seat body 110 along the Y-axis direction and extends out of the coil holder mounting groove 111 along the X-axis direction. In this embodiment, the second limiting block 116 is divided into two groups corresponding to the magnetic circuit unit 21. The two groups of second limiting blocks 116 are arranged along the Y-axis direction. Each group of second limiting blocks 116 includes two second limiting blocks 116 arranged along the Y-axis direction, and a first interval 117 is formed between the two second limiting blocks 116. The two second limiting blocks are provided with a first clamping block 118 on the side adjacent to each other along the Y-axis direction. In this embodiment, the length of the first limiting block 115 extending along the X-axis direction is greater than the length of each second limiting block 116 extending along the X-axis direction.

[0154] Referring to Figure 5 , Figure 5 The second seat body 120 in this embodiment is shown. The second seat body 120 is made of plastic material as a whole. Figure 5As shown, the second seat body 110 is provided with load terminal holes 121 and insertion blocks 122. The number of the load terminal holes 121 is the same as that of the load terminals 33, which is three, and the load terminal holes 121 are arranged correspondingly 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 of the load terminal holes 121 penetrates the second seat body 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 arranged at the middle of the second seat body 120 along the Y-axis direction. The insertion blocks 122 are arranged at one end of the second seat body 120 away from the load terminal holes 121 along the X-axis direction. The number of the insertion blocks 122 is the same as that of the first intervals 117, which is two, and the insertion blocks 122 are arranged correspondingly to the first intervals 117. The two insertion blocks 122 are arranged along the Y-axis direction. Each of the insertion blocks 122 is adapted to extend into the corresponding first interval 117 along the X-axis direction. Each of the insertion blocks 122 is provided with a second clamping block 126 corresponding to the first clamping block 118 at both sides of the insertion block 122 along the Y-axis direction.

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

[0156] Referring to Figure 1 , Figure 6 and Figure 7 . Figure 1 , Figure 6 and Figure 7 show the magnetic circuit unit 21 in this embodiment. The magnetic circuit unit 21 is attached to the first seat body 110. As shown in Figure 1 , Figure 6 and Figure 7 , each of the magnetic circuit units 21 includes a coil assembly 210, an armature assembly 220, and two supporting members 230.

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

[0158] As Figure 6 and Figure 7As shown, the armature assembly 220 rotates relative to the coil assembly 210 about a 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, two armatures 222, a main body 223, two protruding shafts 224, and a swing portion 225, which are fixed to each other. The permanent magnet 221 is disposed in the main body 223 and is provided with two magnetic pole surfaces. The two armatures 222 are fixed to the two magnetic pole surfaces of the permanent magnet 221, respectively. The two armatures 222 extend in parallel to each other. Each armature 222 is partially located in the main body 223, and both ends of each armature 222 along the extension direction thereof extend out of the main body 223 and form an attraction portion 226 adapted to be attracted to a corresponding magnetic driving end 216. In this embodiment, the “extension direction of the armature 222” refers to the arrangement direction of the two attraction portions 226 of the armature 222. The two protruding shafts 224 extend out of the main body 223 from both sides of the main body 223 along the Y-axis direction and away from each other along the Y-axis direction. The two protruding shafts 224 are used to establish a rotation connection relationship with the two supporting members 230. The swing portion 225 extends out of the main body 223 perpendicularly to the Y-axis direction to cooperate with the push member 41. In this embodiment, the extension direction of the swing 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 point 229, which is located above the rotation axis Q along the Z-axis direction. 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 passing through the contact point between the swing portion 225 and the push member 41 when the moving spring set 31 and the stationary contact point set 32 are closed. In this embodiment, the main body 223, the two protruding shafts 224, and the swing portion 225 are made of plastic material and are integrated. The two armatures 222 are made of metal material. The main body 223, the two protruding shafts 224, the swing portion 225, the permanent magnet 221, and the two armatures 222 are integrally formed by insert injection molding to form the armature assembly 220 in this embodiment. As can be seen from the configuration of the armature assembly 220 in this embodiment, the relay 1 in this embodiment is a magnetic latching relay. Of course, in other embodiments, it can not have a magnetic latching function.

[0159] Referring to Figure 6 and Figure 8 , Figure 6 and Figure 8 The two supporting members 230 in this embodiment are shown. As Figure 6 and Figure 8As shown, the two supports 230 are fixed relative to the coil assembly 210 and located within the housing 10. The two supports 230 are used to support the armature assembly 220. Specifically, each support 230 is located along the Y-axis direction on the two sides of the coil assembly 210 respectively, and is arranged in correspondence with the slot 112. The two supports 230 are adapted to be inserted into the corresponding slot 112 along the Z-axis direction downward. Each support 230 extends along the Z-axis direction. Each support 230 is provided with two connecting holes 231 along the Z-axis direction. The two connecting holes 231 are adapted to be inserted into the two protruding portions 217 on the same side along the Y-axis direction correspondingly. Each support 230 is provided with an axle hole 232 which is rotatably matched with the corresponding protruding axle 224, and the axle hole 232 is located between the two connecting holes 231 along the Z-axis direction.

[0160] Referring to Figure 1 , Figure 9 and Figure 10 , Figure 1 , Figure 9 and Figure 10 The contact portion 30 in the present embodiment is shown. As shown in Figure 1 , the contact portion 30 is arranged on the second seat body 120. The contact portion 30 is arranged along the X-axis direction with the magnetic circuit portion 20.

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

[0162] like Figure 9 As shown, each stationary contact group 32 has a stationary contact 320 corresponding to all moving contacts 311 in the corresponding moving spring group 31. In this embodiment, the moving contact 311 closes with the stationary contact 320 downward along the Z-axis and opens with the stationary contact 320 upward along the Z-axis. Correspondingly, the moving contact group 314 closes with the corresponding stationary contact group 32 downward along the Z-axis and opens with the corresponding stationary contact group 32 upward along the Z-axis. Specifically, the moving contact group 31c closes or opens with the stationary contact group 32a along the Z-axis, and the moving contact group 31d closes or opens with the stationary contact group 32b along the Z-axis. In this embodiment, the moving spring group 31 and the corresponding stationary contact group 32 constitute a switch 34. Specifically, the first moving spring group 31a and the first stationary contact group 32a constitute a first switch 34a, and the second moving spring group 31b and the second stationary contact group 32b constitute a second switch 34b.

[0163] like Figure 1 , Figure 9 and Figure 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 fixed to the second seat body 120 and penetrates the corresponding load terminal hole 121 along the Z-axis direction, and extends downward to 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 third load terminal 33c extends downward to the middle part of the base 11 along the Y-axis direction. The moving contact group 31 and the stationary contact group 32 in each switch 34 are respectively connected to different load terminals 33. At least one load terminal 33 is connected to at least two stationary 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 moving contact group 31a. The second load terminal 33b is fixedly connected and electrically connected to the second moving contact group 31b. The third load terminal 33c is fixedly connected and electrically connected to the first stationary contact group 32a and the second stationary contact group 32b to form the common terminal 330. In this embodiment, each load terminal 33 is provided with a connecting part 331 perpendicular to the Z-axis direction, and the connecting part 331 is used to connect the stationary contact group 32 and / or the moving contact group 31. In this embodiment, the connecting part 331 of the common terminal 330 is located below the connecting parts 331 of the other two load terminals 33 along the Z-axis direction, and the connecting parts 331 of the other two load terminals 33 are located in the same plane along the Z-axis direction. Specifically, the connecting part 331 of the third load terminal 33c is located below the connecting parts 331 of the first load terminal 33a and the second load terminal 33b along the Z-axis direction, and the connecting parts 331 of the first load terminal 33a and the second load terminal 33b are located in the same plane along the Z-axis direction. As shown in FIG. 1, the connecting part 331 of the common terminal 330 is arranged corresponding to the connecting part 331 of the first load terminal 33a and the connecting part 331 of the second load terminal 33b along the Y-axis direction. In this embodiment, the connecting part 331 of the common terminal 330 is arranged corresponding to the connecting part 331 of the first load terminal 33a and the connecting part 331 of the second load terminal 33b along the Y-axis direction. In this embodiment, the connecting part 331 of the common terminal 330 is arranged corresponding to the connecting part 331 of the first load terminal 33a and the connecting part 331 of the second load terminal 33b along the Y-axis direction. Figure 10 As shown, in this embodiment, the connecting part 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 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 part 20 than the connecting parts 331 of the other two 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. The positions of the first arm 332 and the second arm 333 along the X-axis direction are closer to the magnetic circuit part than the connecting parts 331 of the first load terminal 33a and the second load terminal 33b.

[0164] Referring to Figures 11 to 17 , Figures 11 to 17The pusher 41 in the present embodiment is shown. Each pusher 41 is attached to the first seat body 110 and located in the housing 10. In the present embodiment, the pusher 41 moves along the Z-axis direction relative to the housing 10. As shown in Figure 11 , Figure 16 and Figure 17 , in the present embodiment, the pusher 41 includes a base body 410 and two sliding fitting portions 411. The base body 410 is provided with a first fitting hole 412 and a second fitting hole 413 from top to bottom along the Z-axis direction. The first fitting hole 412 is for the swing portion 225 to extend into from the coil assembly 210. The second fitting hole 413 is for the moving spring set 31 to extend into along the X-axis direction towards the winding axis P. Therefore, in the present embodiment, the fitting direction of the swing portion 225 and the fitting direction of the moving spring set 31 relative to the pusher 41 are substantially opposite. The two sides of the first fitting hole 412 along the Z-axis direction are respectively provided with a first abutting portion 414 and a second abutting portion 415 from top to bottom, which are adapted to abut against the swing portion 225. Since in the present embodiment, the moving contact set 314 is closed with the corresponding stationary contact set 32 along the Z-axis direction downwards and is disconnected with the corresponding stationary contact set 32 along the Z-axis direction upwards, the swing portion 225 abuts against the second abutting portion 415 downwards in the closing stroke and abuts against the first abutting portion 414 upwards in the disconnecting stroke. In the present embodiment, the first abutting portion 414 and the second abutting portion 415 are both outwardly flanged along the X-axis direction from the hole wall of the first fitting hole 412. The surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to abut against the swing portion 225 form smooth curved surfaces, which are arc surfaces in the present embodiment. In the present embodiment, the portion of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent along the upward direction towards the direction closer to the rotation axis Q, and the flanging directions of the first abutting portion 414 and the second abutting portion 415 are opposite to each other, specifically, the flanging direction of the first abutting portion 414 is towards the load terminal 33 along the X-axis direction, and the flanging direction of the second abutting portion 415 is towards the rotation axis Q along the X-axis direction. As shown in Figure 12 and Figure 13 , the two sliding fitting portions 411 are respectively provided on the two sides of the base body 410 along the Y-axis direction. The portion of the sliding fitting portion 411 adapted to extend into the sliding groove 113 is substantially circular arc-shaped in the projection plane perpendicular to the Z-axis direction, and at least one concave portion 411 is formed on the outer edge of the circular arc, which extends along the Z-axis direction. In the present embodiment, the number of the concave portions 41 is two. As shown in Figure 14 and Figure 15As shown, the two sliding fit portions 411 slide fit with the two sliding grooves 113 of the housing 10 along the movement direction of the pusher 41, which is the Z-axis direction in this embodiment. The two sliding grooves 113 generally wrap the part of the corresponding sliding fit portion 411 extending into the sliding groove 113 due to the existence of the inwardly-retracted section 113c, and the two sliding grooves 113 limit the movement of the pusher 41 along the Y-axis direction. Each sliding groove 113 limits the movement of the corresponding sliding fit portion 411 along the X-axis direction. In this embodiment, the base body 410 is made of metal, specifically stainless steel, and is a sheet metal part, and in other embodiments, it can be a cast part, and the metal material can also be aluminum or aluminum alloy. The sliding fit portion 411 is made of plastic. The base body 410 and the two sliding fit portions 411 are integrally formed by insert injection molding. The size of the sliding fit portion 411 along the X-axis direction is greater than the thickness of the base body 410 along the X-axis direction. In other embodiments, only the part of the base body 410 suitable for contacting the moving spring set 31 is made of metal, i.e., the two edges of the second fitting hole 413 along the Z-axis direction are made of metal, and in other embodiments, only the upper edge of the second fitting hole 413 along the Z-axis direction is made of metal, which is used to contact and push the moving spring set 31 to close the moving contact set 314 and the stationary contact set 32. In this embodiment, the upper edge is used to contact and push the elastic member 313 elastically deformed relative to the moving spring body 312 to close the moving contact set 314 and the stationary contact set 32. In other embodiments, the moving spring 310 only has the moving spring body 312, and the upper edge contacts and pushes the moving end 316 of the moving spring body 312 to close the moving contact set 314 and the stationary contact set 32.

[0165] Referring to Figures 16 to 20 , Figures 16 to 20 The internal structure and electrical structure of the relay 1 in this embodiment are shown in the schematic diagram. As shown in Figure 16 and Figure 17As shown, the first magnetic circuit unit 21a and the second magnetic circuit unit 21b are mounted on the base 11 along the Z-axis. The two sliding engagement portions 411 of the first pusher 41a are respectively slidably engaged with the corresponding slide grooves 113 along the Z-axis. The two sliding engagement portions 411 of the second pusher 41b are respectively slidably engaged with the corresponding slide grooves 113 along the Z-axis. The first load terminal 33a, the second load terminal 33b, and the third load terminal 33c are respectively fixedly connected to the base 11. The first moving spring assembly 31a is fixedly connected to the first load terminal 33a, and the second moving spring assembly 31b is fixedly connected to the second load terminal 33b. The first stationary contact assembly 32a and the second stationary contact assembly 32b are respectively fixedly connected to the third load terminal 33c. The swinging portion 225 of the first magnetic circuit unit 21a extends into the first mating hole 412 of the first pusher 41a. The swinging portion 225 of the second magnetic circuit unit 21b extends into the first mating hole 412 of the second pusher 41b. The moving ends 316 of each moving spring 310 in the first moving spring group 31a and each elastic element 313 extend into the second mating hole 413 of the first pusher 41a, and the moving ends 316 of each moving spring 310 in the second moving spring group 31b and each elastic element 313 extend into the second mating hole 413 of the second pusher 41b.

[0166] like Figure 18 As shown, after the relay 1 in this embodiment is connected, the first magnetic circuit unit 21a controls the first switch 34a to close or open via the first pusher 41a. 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 between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b to close or open via the second pusher 41b. 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 between the second load terminal 33b and the third load terminal 33c. The first switch 34a and the second switch 34b must be closed simultaneously for the first load terminal 33a and the second load terminal 33b to conduct.

[0167] like Figure 19 and Figure 20 As shown, in this embodiment, regardless of the situation, the position where the pushing member 41 abuts against the swing portion 225 is closer to the rotation axis Q than the second mating 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 mating portion 411 at least partially overlaps with the projection of at least one load terminal 33. Specifically, the projection of the sliding mating portion 411 at least partially overlaps with the projection of the third load terminal 33c. Since the swing portion 225 is configured such that the first intersection point 229 is located above the rotation axis Q along the Z-axis direction in this embodiment, the sliding mating portion 411 and the third load terminal 33c will not abut against each other along the Z-axis direction.

[0168] As shown in Figure 19 Fig. 6, when the switch 34 is in the open state, the movable contact 311 is disconnected from the fixed contact 320, the swing portion 225 abuts against the first abutting portion 414 upwardly, and the lower edge of the second engaging hole 413 abuts against the moving end 316 upwardly. When the switch 34 needs to be closed, the swing portion 225 moves downwardly and abuts against the second abutting portion 415, and the movable contact 311 contacts the fixed contact 320. After the movable contact 311 contacts the fixed contact 320, the swing portion 225 continues to move downwardly into the overstroke, and the pusher 41 continues to move downwardly until, as shown in Figure 20 Fig. 7, the swing portion 225 moves downwardly to the limit. The elastic member 313 deforms to the limit, and the movable contact 311 is completely closed with the fixed contact 320. When the switch 34 needs to be opened, the swing portion 225 abuts against the first abutting portion 414 upwardly, and drives the pusher 41 to move upwardly. The lower edge of the second engaging hole 413 of the pusher 41 moves upwardly until it abuts against the moving end 316 upwardly, and continues to drive the moving end 316 to move upwardly. At this time, the elastic member 311 restores the deformation, and finally reaches the open state of the switch 34 as shown in Figure 19 Fig. 8.

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

[0170] Step 1, the magnetic circuit portion 20 and the push portion 40 are assembled to the first seat body 110 to form a first combination 51 as shown in Figure 21 Fig. 9, and the contact portion 30 is assembled to the second seat body 120 to form a second combination 52 as shown in Figure 22 Fig. 10. In Step 1, the process of assembling the magnetic circuit portion 20 and the push portion 40 to the first seat body 110 to form the first combination 51 includes the following steps:

[0171] Step 1.1, the armature assembly 220 and the support member 230 are assembled to the coil assembly 210 to form the magnetic circuit unit 21;

[0172] Step 1.2, each magnetic circuit unit 21 and the corresponding pusher 41 are respectively arranged to the first seat body 110. In the process of arranging each magnetic circuit unit 21 and the corresponding pusher 41, the swing portion 225 is inserted into the first engaging hole 412, and then the sliding fitting portion 411 is inserted into the corresponding sliding slot 113 along the Z-axis direction, and the support member 230 is inserted into the insertion slot 112 along the Z-axis direction, and each coil terminal 213 is inserted into the first seat body 110 along the Z-axis direction;

[0173] Step 2, the first combination 51 and the second combination 52 are inserted into place along the X-axis direction, and the movable spring group 31 is inserted into the second engaging hole 413 along the X-axis direction; and

[0174] Step 3: Cover the cover to the base 11, and fixed with the base 11.

[0175] Referring to Figure 23 and Figure 24 , Figure 23 and Figure 24 It is shown that the first combination 51 and the second combination 52 are inserted into the position, and the relative fixation between the first combination 51 and the second combination 52 is fixed. As Figure 23 and Figure 24 It is shown that the first seat body 110 and the second seat body 120 are inserted into the position, and the first seat body 110 and the second seat body 120 are inserted into the position. The first block 118 and / or the second block 126 are elastically deformed. After being inserted into the position, the first block 118 and the second block 126 are restored to each other by deforming and hooking, and are connected and matched along the X-axis direction. After being inserted into the position, the plug 122 is limited and matched along the Y-axis direction with the corresponding two second limiting blocks 116. After being inserted into the position, the third load terminal 33c extends into the interval between the first limiting block 115 and the second limiting block 116 along the X-axis direction, and the third load terminal 33c is limited and matched along the Z-axis direction with the first limiting block 115 and the second limiting block 116. In the embodiment, the third load terminal 33c is gap matched along the Z-axis direction with the first limiting block 115 and the second limiting block 116, and the length of the second limiting block 116 matched along the X-axis direction with the third load terminal 33c is less than the length of the first limiting block 115 matched along the X-axis direction with the third load terminal 33c, so that the end of the second combination 52 away from the first combination 51 is allowed to deflect downward relative to the first combination 51 when the first combination 51 or the second combination 52 is subjected to the downward force along the Z-axis direction.

[0176] In the embodiment, when the cover is fixed with the base 11, the first combination 51 and the second combination 52 can be prevented from being separated along the X-axis direction.

[0177] In the embodiment, the magnetic circuit part 20, the contact part 30 and the pushing part 40 are all attached to the shell, and the magnetic circuit part 20 includes at least two magnetic circuit units 21, the moving spring group 210, the static contact group 32 and the pushing member 41 are all arranged correspondingly with the magnetic circuit unit 20. Therefore, at least two switches capable of being independently controlled are packaged in the shell 10 of one relay. Compared with the prior art, the material of the shell 10 is saved, and the packaging volume of the relay 1 is reduced. When more than two switches are realized, the occupied space is smaller than that of the prior art.

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

[0179] In the embodiment, the common terminal 330 is a load terminal 33, which can be electrically connected to an external circuit or not. When connected to an external circuit, 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 a branch circuit control can be established. When not electrically connected to an external circuit, the common terminal 330 becomes a component bridging two or more switches 34, thereby forming a series relationship between the two or more switches 34. Therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch 34 is controlled separately, such series or parallel relationship makes two switches form an "and" or "or" logical relationship, which can not only be applied to simple logic calculation, but also be applied to scenarios with higher safety and reliability requirements to avoid uncontrolled switches due to failure of a single functional part formed by the magnetic circuit unit 21, the driving member 41, the moving spring group 31 and the static contact group 32.

[0180] In the embodiment, the internal electrical connection relationship of the relay 1 can be selected according to customer needs, especially the loading mode of the external circuit, so that the relay has greater versatility.

[0181] In the embodiment, each coil terminal 213 and each load terminal 33 extends downward along the Z-axis direction, which is convenient for electrical connection with the circuit board.

[0182] In the 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 of the relay 1.

[0183] In the embodiment, each magnetic circuit unit 21 is arranged along the Y-axis direction, each moving spring group 31 is arranged along the Y-axis direction, each driving member 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, without the need for staggered layout in space between each functional part, thereby reducing the structural complexity and assembly difficulty.

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

[0185] In this embodiment, each moving spring 310 is provided with one moving contact 311, compared with the scheme that the same moving spring 310 is provided with multiple moving contacts, it can avoid that some moving contacts 311 cannot be effectively closed with the static contact 320 when the moving spring 311 moves, or it can avoid that some moving contacts 310 increase the contact resistance when closing due to the inability to withstand uniform force.

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

[0187] In this embodiment, the pushing member 41 directly pushes the moving end 316 of the moving spring body 312 to drive the moving contact 311 to be disconnected with the static contact 320, the breaking time is shorter, so the arc drawing time is shorter, and the relay 1 has a longer service life.

[0188] In this embodiment, the elastic member 313 is a compression spring connected to the moving spring body 312, compared with other ways of connecting the elastic member 313 to the moving spring body 312 or other forms of elastic member 313, the elastic member 313 has stronger impact resistance, which can avoid the elastic member 313 from being offset relative to the moving spring body 312 due to impact.

[0189] In this embodiment, the elastic member 313 and the moving spring body 312 are connected at the position of the moving contact 311, so that the force of the elastic member 313 when deformed 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 supporting members 230 are fixed relative to the coil assembly 210 and are located on both sides of the coil assembly 210 along the Y-axis direction, which 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 connecting hole 231 on the supporting member 230 and the protruding part 217 on the magnetic driving end 216 are inserted and matched along the Y-axis direction, which can more accurately position the supporting member 230 relative to the yoke 215. Since the supporting member 230 is the movement reference of the armature assembly 220, when the armature assembly 220 rotates relative to the coil assembly 210, the attracting part 226 can be more accurately attracted to the magnetic driving end 216.

[0192] In this embodiment, the armature assembly 220 further includes a permanent magnet 221, and the two armatures 222 are connected to two poles of the permanent magnet 221, so that the relay 1 has a magnetic retention function, and only needs to be controlled by a pulse electrical signal to change and maintain the open or closed state, thereby saving electrical energy.

[0193] In the embodiment, the main body 223, the two convex shafts 224, the swing part 225, the two armatures 222 and the permanent magnet 221 are integrally formed by insert injection molding, so that the armature assembly 220 is lower in manufacturing difficulty and less likely to cause loss of movement stroke due to tolerance accumulation.

[0194] In the embodiment, the moving spring group 31 extends along the X-axis direction, which can reduce the height of the contact part 30 along the Z-axis direction, is more conducive to saving the 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 stationary contact 320 along the Z-axis direction and improving the withstand voltage capacity of the relay 1.

[0195] In the embodiment, the two sliding grooves 113 are respectively in sliding cooperation with the pushing member 41 along the Z-axis direction, and the groove walls of the two sliding grooves 113 are in limiting cooperation with the pushing member along the Y-axis direction and the X-axis direction. The determinacy of the movement direction of the pushing member 41 can be improved, and the freedom of the pushing member 41 in other directions is constrained, so that the pushing member 41 is less likely to displace or deform along the X-axis direction and the Y-axis direction when subjected to uncertain impact, and the reliability of the relay 1 is improved.

[0196] In the embodiment, the farthest part of the groove wall surface of the sliding groove 113 from the bottom of the other sliding groove 113 is located at the circular arc segment 113b along the Y-axis direction, 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 housing 10, and the circular arc segment 113b can automatically correct the posture of the pushing member 41 when the pushing member 41 is subjected to impact force in an uncertain direction.

[0197] In the embodiment, the straight segment 113a is arranged, which is more conducive to guiding the pushing member 41 when the pushing member 41 is inserted into the sliding groove 113 along the Z-axis direction. The distance between the vertex of the inwardly converging segment 113c and the straight segment 113a is less than the diameter of the circular arc segment 113b, and the sector angle of the circular arc segment 113b is greater than 180 degrees, so that the stability of the circular arc segment 113b can be maintained, and the circular arc segment 113b is less likely to deform.

[0198] In the embodiment, the housing 10 is provided with the sliding groove 113 in sliding cooperation with the sliding cooperation part 411 of the pushing member 41, the two sliding grooves 113 are respectively in sliding cooperation with the sliding cooperation part 41 along the Z-axis direction, the groove wall surfaces of the two sliding grooves 113 are in limiting cooperation with the two sliding cooperation parts 41 along the Y-axis direction and the X-axis direction, and the groove wall surface of the sliding groove 113 is provided with the inwardly converging segment 113c, so that when the pushing member 41 is deflected on the plane formed by the X-axis and the Y-axis, the deflection amount is effectively limited, the determinacy of the movement direction of the pushing member 41 can be improved, and the freedom of the pushing member 41 in other directions is constrained, so that the pushing member is less likely to displace or deform when subjected to impact in an uncertain direction, and the reliability of the relay 1 is improved.

[0199] In the embodiment, the sliding fitting part 411 has a larger dimension along the X-axis direction than the thickness of the base 410 along the X-axis direction, which is more conducive to the sliding fitting part 411 to have the same gap with the sliding groove 113, so that the pusher 41 is less likely to be inclined along the X-axis direction to cause jamming and change the contact point with the moving spring 310 to avoid the stroke of the moving contact 311 deviating from the design purpose, ensure the distance between the moving contact 311 and the static contact 320, and thus ensure the withstand voltage capability of the relay 1.

[0200] In the embodiment, the inner recess 411a is arranged on the circular arc surface of the part of the sliding fitting part 411 extending into the sliding groove 113, so that the sliding fitting part 411 has a smaller contact surface with the groove wall surface of the sliding groove 113, is less likely to be rubbed or jammed, and slides more smoothly.

[0201] In the embodiment, the third load terminal 33c is partially located below the sliding fitting part 411, which is conducive to increasing the overcurrent area of the third load terminal 33c as the common terminal 330 to achieve greater carrying capacity, and at the same time, is conducive to reducing the heat generation. The first intersection 229 is located above the rotation axis Q, that is, the swing part 225 is upwardly biased relative to the main body 223, so that the sliding fitting part 411 is less likely to interfere with the load terminal 33 located therebelow, the movement stroke of the pusher 41 is more easily ensured, the distance between the moving contact 311 and the static contact 320 can be increased, and the withstand voltage capability can be enhanced.

[0202] In the embodiment, all positions where the pusher 41 contacts the swing part 225 are closer to the rotation axis Q along the X-axis direction than the second fitting hole 413 (i.e., the position where the pusher 41 contacts the moving spring set 31), which is conducive to reducing the movement stroke of the pusher 41 along the Z-axis direction while ensuring the distance between the moving contact 311 and the static contact 320, and in particular, is conducive to reducing the highest point of the movement stroke of the pusher 41, and is conducive to making the highest point not exceed the highest point of the coil assembly 210, and thus is conducive to saving the height of the relay 1 in the Z-axis direction.

[0203] In the embodiment, the two sides of the first fitting hole 412 along the Z-axis direction are respectively provided with the first abutting part 414 and the second abutting part 415 adapted to abut against the swing part 225 from top to bottom, and the first abutting part 414 and the second abutting part 415 are both outwardly turned along the X-axis direction from the hole wall of the first fitting hole 412, so that the contact point of the swing part 225 with the pusher 41 can be moved along the outward turning method, and this is conducive to reducing the scraping between the swing part 225 and the pusher 41 or the base 410 of the pusher 41 made of metal material.

[0204] In the embodiment, the first abutting portion 414 and the second abutting portion 415 are outwardly turned along the X-axis direction, which is beneficial to make the pusher 41 thinner, and can ensure that the pusher 41 always abuts against the swing portion 225 correctly, which is beneficial to realize the miniaturization of the relay 1 and to ensure that the swing portion 225 always abuts against the second abutting portion 415 at the lowest point, so that when the dynamic contact 311 contacts the static contact 320 and the pusher 41 enters the overstroke through the elastic member 313, the overstroke distance along the movement direction of the pusher 41 can make the dynamic contact reliably abut against the static contact. The surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to contact the swing portion 225 are smooth curved surfaces, the friction coefficient between the pusher 41 and the swing portion 225 is smaller, and the service life of the swing portion 225 is higher.

[0205] In the embodiment, the surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to contact the swing portion 225 are smooth curved surfaces, the friction coefficient between the pusher 41 and the swing portion 225 is smaller, and the service life of the swing portion 225 is higher.

[0206] In the embodiment, the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, which can reduce the size of the pusher 41 along the Z-axis direction, and is more beneficial to realize the above functions in the case of small space along the Z-axis direction. In particular, when the swing portion 225 is biased upward relative to the main body 223, the distance along the X-axis direction between the highest point of the upward swing of the swing portion 225 and the lowest point of the downward swing of the swing portion 225 will be larger, and the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, which is beneficial to ensure that the swing portion 225 can correctly abut against the first abutting portion 414 and the second abutting portion 415 when the swing portion 225 swings upward to the highest point and downward to the lowest point, so that the dynamic contact 311 can correctly close or open the static contact 320.

[0207] In the embodiment, when the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, the outward turning directions of the first abutting portion 414 and the second abutting portion 415 are away from each other, which is beneficial to make the contact points between the swing portion 225 and the first abutting portion 414 and the second abutting portion 415 closer along the X-axis direction, and to avoid that the swing portion 225 drives the pusher 41 to move and generates a larger reciprocating force along the X-axis direction on the pusher 41.

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

[0209] In the embodiment, the support 230 is not only inserted and matched with the convex part 217 of the magnetic driving end 216 along the Y-axis direction, but also inserted and matched with the slot 113 of the shell 10 along the Z direction, the freedom of the support 230 is completely limited, which is more conducive to supporting the armature assembly 220, so that the rotation axis Q of the armature assembly 220 cannot move along the X-axis direction, and when the relay 1 is impacted, the armature assembly 220 with large mass can transmit the impact force to the support 230 through the convex shaft 224, and the support 230 can transmit the force to the shell 10, so that the relative displacement between the components is not easy to occur.

[0210] In the embodiment, since the swing part 225 and the moving spring group 31 are respectively inserted and matched with the first matching hole 413 and the second matching hole 413 on the pushing part 41 in the directions opposite to each other, the base 11 is divided into the first seat body 110 and the second seat body 120, the first seat body 110 forms the first combined body 51 with the magnetic circuit part 20 and the pushing part 40, the second seat body 120 forms the second combined body 51 with the contact part 30, and the first combined body 51 and the second combined body 52 are inserted and matched along the X-axis direction, so that the moving spring group 31 is inserted into the second matching hole 413 along the X-axis direction during the insertion and matching process, the relay 1 in the configuration of the application can be more easily assembled, and the swing part 225 and the moving spring group 31 can be prevented from being inserted and matched with the pushing part 41 in the directions opposite to each other at the same time.

[0211] In the embodiment, the first combined body 51 and the second combined body 52 are prevented from being separated from each other along the X-axis direction before being fixed with the cover body through the first clamping block 118 and the second clamping block 126.

[0212] In the embodiment, the first combined body 51 and the second combined body 52 are fixed relative to each other along the Z-axis direction through the load terminal 33 and the first limiting block 115 and the second limiting block 116 along the Z-axis direction. The load terminal 33 is inserted into the first limiting block 115 and the second limiting block 116 along the X-axis direction, which can increase the flow area of the load terminal 33, and is conducive to improving the load capacity.

[0213] In the embodiment, the load terminal 33 is in clearance fit with the first limiting block 115 and the second limiting block 116 along the Z-axis direction, and the length of the fit between the second limiting block 116 and the load terminal 33 along the X-axis direction is smaller than the length of the fit between the first limiting block 115 and the load terminal 33 along the X-axis direction, which is beneficial for the second assembly 52 to be deflected downward relative to the first assembly 51 to make the second clamping block 126 disengage from the first clamping block 118, so that the first assembly 51 and the second assembly 52 can be quickly disassembled. At the same time, since the length of the fit between the first limiting block 115 and the load terminal along the X-axis direction is larger, the positions where the second assembly 52 and the first assembly 51 are inserted into each other are less likely to sink due to the impact force in the Z-axis direction downward, avoiding the positions where the first assembly 51 and the second assembly 52 are inserted into each other from becoming weak points after the relay 1 is assembled.

[0214] In the embodiment, the insertion block 122 is in limiting fit with the corresponding two second limiting blocks 116 along the Y-axis direction, so that the first assembly 51 and the second assembly 52 are fixed relative to each other along the Y-axis direction.

[0215] In the embodiment, the first clamping block 118 is arranged on the side of the second limiting block 116, and the second clamping block 126 is arranged on the side of the insertion block 122, so that the first clamping block 118 and the second clamping block 126 have greater connection strength and are less likely to disengage.

[0216] In the embodiment, the part of the pushing member 41 adapted to contact the moving spring set 31 is made of metal material, and in other embodiments, the part of the pushing member 41 adapted to contact and push the moving contact 311 and the static contact 320 of the moving spring 310 to close is made of metal material. Therefore, when the external current load is large, causing the moving spring set 31 to generate a large amount of heat, compared with the technical solution in which the part contacting the moving spring set 31 is made of plastic material, the pushing member 41 can avoid softening or even melting due to the heat of the moving spring set 31, so that the closing stroke of the moving spring set 31 does not match the design, causing the load capacity of the relay 1 to decrease, thereby improving the load capacity and reliability of the relay 1.

[0217] In the embodiment, the part of the pushing member 41 adapted to contact the moving spring set 31 and the part adapted to contact the armature assembly 220 are both formed on the base body 410, and the base body 410 is made of metal material, which can also avoid the pushing member 41 from softening or even melting due to the heat of the moving spring set 31.

[0218] In the embodiment, the sliding fit part 411 is in sliding fit with the housing 10, which can improve the certainty of the movement direction of the pushing member 41, and constrain the freedom of the pushing member 41 in other directions, so that the pushing member is less likely to displace or deform when subjected to impact 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 shell 10 also made of plastic material, and is not easy to produce scratches to cause jamming or deviation. The sliding fitting part 411 is integrally formed with the base 410 by insert injection molding, which has higher dimensional accuracy and smaller dimensional tolerance.

[0220] In this embodiment, when the base 41 is a stainless steel sheet metal part, it is easier to process and form, has a simpler structure, higher strength, and is more conducive to miniaturization design. When the base 41 is an aluminum casting or an aluminum alloy casting, it is easier to process and form, has 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 moving spring set 31, and is easier to connect with the moving spring set 31.

[0222] In this embodiment, the part of the common terminal 330 extending downward is located in the middle of the base 11 along the Y-axis direction, which has higher space utilization.

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

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

[0225] In this embodiment, the connecting part 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 corresponding to the magnetic circuit unit, 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 connecting parts 331 of the other two load terminals 33 are farther away from the magnetic circuit part along the X-axis direction than the first arm and the second arm, so that the three load terminals 33 use less material, have lower cost, and have a more compact structure.

[0227] In this embodiment, the assembly method of the relay 1 can avoid that the swing part 225 and the moving spring set 31 are inserted with the pushing piece 41 at the same time along directions opposite to each other.

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

[0229] Embodiment Two

[0230] Referring to Figure 25 , Figure 25 The pusher 41 in embodiment two is shown. As Figure 25 shown, in this embodiment, the pusher 41 also has a base body 410 and two sliding fit parts 411, but the pusher 41 is entirely made of metal material, and specifically can be made of stainless steel sheet metal part or aluminum casting part or aluminum alloy casting part. In this embodiment, the casting aluminum process is adopted. Since the sliding fit part 411 is made of metal material, correspondingly, the inner wall of the sliding groove 113 in contact with the sliding fit part 411 can be made of metal material to avoid scratching. The other parts of this embodiment are the same as those of embodiment one.

[0231] In this embodiment, the pusher 41 is entirely made of metal material, has higher strength, and is less likely to be affected by the heating of the moving spring group.

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

[0233] The other parts of this embodiment are the same as those of embodiment one, and will not be described again.

[0234] Embodiment Three

[0235] Referring to Figure 26 and Figure 27 , Figure 26 and Figure 27 The internal structure of the relay 1 in embodiment three is shown. As Figure 26 and Figure 27As shown, the difference between the present embodiment and embodiment one is mainly that the base 11 in the present embodiment is no longer divided into the first seat body 110 and the second seat body 120, but is integrated, the base 11 is provided with an insertion slot extending along the X-axis direction at the end away from each load terminal 33, and the base 11 is no longer provided with the insertion slot 112. When assembled, the base 11, the contact part 30 and the pushing part 40 jointly form the third assembly 53. In each magnetic circuit unit 21, the connecting hole 231 of the supporting part 230 is in interference fit with the corresponding protruding part 217. When each magnetic circuit unit 21 is assembled to the third assembly 53, the coil holder 211 of each magnetic circuit unit 21 is in insertion fit with the insertion slot on the base 11 along the X-axis direction, and after each magnetic circuit unit 21 is inserted in place, the swing part 225 extends into the first matching hole 412 away from the rotation axis Q. After insertion in place, the third assembly 53 is in limiting fit with each magnetic circuit unit 21 along the Z-axis direction and the Y-axis direction. Then, the cover is arranged on the base 11 and each magnetic circuit unit 21, and the cover is arranged around each coil holder 211 along the X-axis direction, so that the magnetic circuit unit 21 can be prevented from being separated from the third assembly 53 along the X-axis direction by the base 11 and the cover.

[0236] The assembly mode in the present embodiment is another assembly mode of the relay 1 in the present configuration, the swing part 225 extends into the first matching hole away from the rotation axis Q by the insertion fit of the magnetic circuit unit 21 and the base 11 along the X-axis direction, and the swing part 225 and the moving spring group 31 can be simultaneously inserted into the pushing part 41 along the directions opposite to each other. In this case, the coil terminal 211 no longer penetrates through the base 11, but only penetrates through the coil holder 211. When the cover is fixedly connected with the base 11, the cover is arranged around the coil holder 211 along the X-axis direction, and the coil holder 211 can be prevented from being separated from the third assembly 53 along the X-axis direction.

[0237] The present embodiment avoids the assembly of the supporting part 230 to the base 11 along the Z-axis direction by the interference fit of the supporting part 230 and the protruding part 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 the present embodiment are the same as those of embodiment one, and will not be described herein.

[0239] Embodiment Four

[0240] Referring to Figure 28 , Figure 28 The relay 1 in embodiment four is shown. As shown in the figure, the difference between the present embodiment and embodiment three is mainly that the base 11 in the present embodiment is no longer provided with the insertion slot 112, but is provided with a protruding part 217 extending along the X-axis direction at the end away from each load terminal 33. When assembled, the base 11, the contact part 30 and the pushing part 40 jointly form the third assembly 53. In each magnetic circuit unit 21, the connecting hole 231 of the supporting part 230 is in interference fit with the corresponding protruding part 217. When each magnetic circuit unit 21 is assembled to the third assembly 53, the coil holder 211 of each magnetic circuit unit 21 is in insertion fit with the protruding part 217 on the base 11 along the X-axis direction, and after each magnetic circuit unit 21 is inserted in place, the swing part 225 extends into the first matching hole 412 away from the rotation axis Q. After insertion in place, the third assembly 53 is in limiting fit with each magnetic circuit unit 21 along the Z-axis direction and the Y-axis direction. Then, the cover is arranged on the base 11 and each magnetic circuit unit 21, and the cover is arranged around each coil holder 211 along the X-axis direction, so that the magnetic circuit unit 21 can be prevented from being separated from the third assembly 53 along the X-axis direction by the base 11 and the cover. Figure 28As shown, the difference between the present embodiment and Embodiment One is that the base 11 comprises a third seat body 130 and a fourth seat body 140, the coil assembly 210 is fixed to the third seat body 130 along the Z-axis direction, each coil terminal 213 penetrates the third seat body 130 along the Z-axis direction, and the slot 112 is arranged on the third seat body 130. The sliding slot 113 is arranged on the fourth seat body 140, and each load terminal 33 penetrates the fourth seat body 140 along the Z-axis direction. The third seat body 130 and the magnetic circuit part 20 jointly form a fourth assembly 54, the fourth seat body 140 and the pushing part 40 and the contact part 30 jointly form a fifth assembly 55, the fourth assembly 54 and the fifth assembly 55 are inserted along the X-axis direction, after being inserted in place, the swing part 225 extends into the first matching hole 412 along the X-axis direction, the third seat body 130 and the fourth seat body 140 are clamped and matched along the X-axis direction, and the fourth assembly 54 and the fifth assembly 55 are limited and matched with each other along the Y-axis direction and the Z-axis direction. The specific clamping and matching mode and the limiting and matching mode can be the same as those of Embodiment One.

[0241] The present embodiment is based on the same configuration of the relay structure as that of Embodiment One, and provides another assembly mode, which can also avoid the swing part 225 and the moving spring group 31 being inserted with the pushing piece 41 along the directions opposite to each other at the same time.

[0242] The other parts of the present embodiment are the same as those of Embodiment One, and will not be described herein again.

[0243] Embodiment Five

[0244] Referring to Figure 29 , Figure 29 The relay 1 in Embodiment Five is shown. As shown in FIG. 5, the relay 1 comprises a base 11, a pushing part 40, a contact part 30, a magnetic circuit part 20, and a coil assembly 210. Figure 29As shown, the difference between this embodiment and embodiment one is that the base 11 comprises a fifth seat body 150, a sixth seat body 160 and a seventh seat body 170, the coil assembly 210 is fixed to the fifth seat body 150 along the Z-axis direction, each coil terminal 213 penetrates the fifth seat body 150 along the Z-axis direction, and the slot 112 is arranged on the fifth seat body 150. The sliding slot 113 is arranged on the sixth seat body 160. Each load terminal 33 penetrates the seventh seat body 170 along the Z-axis direction. The fifth seat body 150 and the magnetic circuit part 20 jointly form a sixth assembly 56; the sixth seat body 160 and the pushing part 40 jointly form a seventh assembly 57, and the seventh seat body 170 and the magnetic circuit part 30 jointly form an eighth assembly 58. The sixth assembly 56, the seventh assembly 57 and the eighth assembly 58 are inserted along the X-axis direction, after being inserted in place, the moving spring set 31 extends into the second matching hole 415 along the X-axis direction, the swing part 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 clamped and matched, and the sixth assembly 56 and the seventh assembly 57 are limited and matched with each other along the Y-axis direction and the Z-axis direction, the sixth seat body 160 and the seventh seat body 170 are clamped and matched, and the seventh assembly 57 and the eighth assembly 58 are limited and matched with each other along the Y-axis direction and the Z-axis direction. In this embodiment, the insertion and matching 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 clamping and matching mode can be the same as that of embodiment one.

[0245] This embodiment is based on the same structure of the relay as that of embodiment one, and provides another assembly mode, which can also avoid the swing part 225 and the moving spring set 31 being inserted with the pushing part 41 along the opposite directions at the same time.

[0246] The other parts of this embodiment are the same as those of embodiment one, and will not be described here.

[0247] Embodiment six

[0248] Referring to Figure 30 and Figure 31 , Figure 30 shows the contact part 30 of the relay 1 in embodiment six, Figure 31 shows a schematic diagram of the electrical structure of the relay 1 in embodiment seven. As Figure 30As shown, in this embodiment, the first load terminal 33a is still connected to the first moving contact group 31a, the second load terminal 33b is connected to the second stationary contact group 32b, the first arm 322 of the third load terminal 33c is connected to the first stationary contact group 32a, and the second arm 333 of the third load terminal 33c is connected to the second moving contact group 31b, so that the third load terminal 33c forms the common terminal 330. The connecting part 331 of the third load terminal 33c as the common terminal 330 is located below the connecting parts 331 of the other two load terminals 33 along the Z-axis direction, and the connecting parts 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 stationary contact group 32a is closer to the magnetic circuit part 20 along the X-axis direction than the second arm 333 connected to the second moving contact group 31b. In this embodiment, the moving contact group 31c of the first moving contact group 31a is closed to the first stationary contact group 32a downward along the Z-axis direction and is disconnected from the first stationary contact group 32a upward along the Z-axis direction. The moving contact group 31d of the second moving contact group 31b is closed to the second stationary contact group 32b upward along the Z-axis direction and is disconnected from the second stationary contact group 32b downward along the Z-axis direction.

[0249] In this embodiment, at least one load terminal 33 simultaneously connects the moving contact group 31 in at least one switch 34 and the stationary contact group 32 in at least one other switch 34 and forms a common terminal 330. Specifically, as shown, Figure 23 The first magnetic circuit unit 21a controls the first switch 34a through the first pusher 41a, the first moving contact group 31a in the first switch 34a is connected to the first load terminal 33a, and the first stationary 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 pusher 41b, the second moving contact group 31b in the second switch 34b is connected to the third load terminal 33c, and the second stationary 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 Embodiment One, which will not be described here.

[0251] Embodiment Seven

[0252] Referring to Figure 32 and Figure 33 , Figure 32 the internal structure of the relay 1 in Embodiment Seven is shown, Figure 33 the electrical structure diagram of the relay 1 in Embodiment Seven is shown.

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

[0254] As shown in Figure 32 the embodiment, the pushing part 225 extends from the main body 223 in parallel to the extension direction of the armature 222. In the embodiment, at least one load terminal 33 simultaneously connects at least two moving spring groups 31 and forms a common terminal 330. Specifically, the first load terminal 33a connects the first static contact group 32a, the second load terminal 33b connects the second static contact group 32b, and the third load terminal 33c connects the first moving spring group 31a and the second moving spring group 31b and forms a common terminal.

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

[0256] As shown in Figure 32 the embodiment, the pushing member 41 moves along the X-axis direction. Specifically, the pushing part 225 is inserted into the first assembly hole 412 along the Z-axis direction, and each moving spring group 31 is inserted into the second assembly hole 413 along the Z-axis direction.

[0257] As shown in Figure 32 , the swinging part 225 swings away from the rotation axis Q along the X-axis direction, drives the pushing member 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 part 225 swings towards the rotation axis Q along the X-axis direction, drives the pushing member 41 to move towards the rotation axis Q along the X-axis direction, and drives the moving contact group 314 in the moving spring group 31 to open with the corresponding static contact group 32.

[0258] As shown in Figure 33 , 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, and the moving spring set 31 extends along the Z-axis direction, so that the area of the relay 1 (the projection area along the Z-axis direction) can be reduced, and the density of the circuit board can be higher when the height of the relay 1 is not strictly limited. Meanwhile, since the moving spring set 31 and the swing part 225 are both matched with the pusher 41 along the Z-axis direction, the relay 1 in this embodiment is easier to assemble. The guide of the pusher 41 can be solved by the hooking structure on the swing part 225 and the moving spring set 31, or by adding a pressing block on the cover.

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

[0261] Eighth Embodiment

[0262] Referring to Figure 34 and Figure 35 . Figure 34 Fig. 8 shows the internal structure of the relay 1 in the eighth embodiment, Figure 35 Fig. 7 shows the electrical structure diagram of the relay 1 in the seventh embodiment.

[0263] The same parts in this embodiment as those in the seventh embodiment will not be described here. The different parts between the eighth embodiment and the seventh embodiment will be described below.

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

[0265] As shown in Figure 35 , the first magnetic circuit unit 21a controls the first switch 34a through the first pusher 41a, the first moving spring set 31a in the first switch 34a is connected with the first load terminal 33a, and the first static contact set 32a in the first switch 34a is connected with the third load terminal 33c, so that the first switch 34a can independently control the on-off of 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 pusher 41b, the second moving spring set 31b in the second switch 34b is connected with the third load terminal 33c, and the second static contact set 32b in the second switch 34b is connected with the second load terminal 33b, so that the second switch 34b can independently control the on-off of the third load terminal 33c and the second load terminal 33b.

[0266] The above description and examples are intended to explain the scope of the present application, but not to limit the scope of the present application.

Claims

1. A relay characterized in that it The relay comprises: a housing; a magnetic circuit part attached to the housing and comprising at least two magnetic circuit units; and a contact part attached to the housing and comprising a plurality of moving spring groups, a plurality of stationary contact groups and a plurality of load terminals; each of the moving spring groups and stationary contact groups is arranged in correspondence with a magnetic circuit unit, each moving spring group is provided with a moving contact group corresponding to a stationary contact group; each moving spring group and stationary contact group in each switch are connected to different load terminals, at least one load terminal is shared by at least two switches and forms a common terminal; the moving spring groups are driven by the corresponding magnetic circuit units to make the moving contact groups close or open with the corresponding stationary contact groups.

2. A relay according to claim 1, characterised in that The relay further comprises a pushing part, the pushing part comprises a plurality of pushers accommodated in the housing, the pushers are arranged in correspondence with the magnetic circuit units, the pushers are driven by the corresponding magnetic circuit parts to drive the corresponding moving spring groups.

3. A relay according to claim 1 or 2, characterised in that At least one load terminal is connected to at least two stationary contact groups or at least two moving spring groups and forms the common terminal; or, at least one load terminal is connected to the moving spring group in at least one switch and the stationary contact group in at least one switch whose moving spring group is not connected to a load terminal and forms the common terminal.

4. The relay according to claim 2, wherein: each magnetic circuit unit is arranged along a Y-axis direction, each magnetic circuit unit comprises a coil assembly and an armature assembly, the coil assembly is fixed relative to the housing and comprises a coil winding and a coil terminal electrically connected to the coil winding, an axis of winding of the coil winding extends along a Z-axis direction, the armature assembly rotates relative to the coil assembly about a rotation axis extending along the Y-axis direction; each coil winding and each armature assembly are accommodated in the housing, the coil terminal extends downward along the Z-axis direction; the contact part and the magnetic circuit part are arranged along an X-axis direction; each switch is accommodated in the housing, each load terminal extends downward along the Z-axis direction; each pusher is arranged along the Y-axis direction, 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 stationary contact group along the movement direction of the pusher.

5. A relay according to claim 1 or 2 or 4, characterised in that Each moving spring group comprises 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, the stationary contact group corresponding to the moving contact group is provided with stationary contacts corresponding to all moving contacts in the moving contact group.

6. A relay according to claim 5, wherein the relay is a latching relay. The moving spring group comprises at least two moving springs, each moving spring is provided with one moving contact, each moving spring in the same moving spring group is arranged along the Y-axis direction, each moving contact in the same moving spring group is arranged along the Y-axis direction.

7. A relay according to claim 5, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The moving spring further comprises a moving spring body and an elastic member, the moving 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 moving spring body, the moving contact is fixed to the moving spring body and close to the moving end, one end of the elastic member is connected to the moving spring body, the other end is adapted to be pushed by the pusher; the pusher drives the moving end to move by pushing the elastic member to make the moving contact close with the corresponding stationary contact, and drives the moving contact to open with the corresponding stationary contact by pushing the moving end.

8. A relay according to claim 7, wherein the relay is a latching relay. The elastic member is a compression spring, one end of the elastic member is connected to the moving spring body at the position of the moving contact, and the other end of the elastic member is spaced apart from the moving direction of the moving pusher.

9. A relay according to claim 4, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The magnetic circuit unit further comprises a support fixed relative to the coil assembly and located in the housing, the coil assembly further comprises a coil frame, a core and a yoke, the coil winding is wound on the coil frame, and the coil terminal is fixedly connected to the coil frame; the 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, and the two yokes are arranged along the Z-axis direction; one end of each yoke is connected to the core, and the other end forms a magnetic driving end; the two magnetic driving ends drive the armature assembly to rotate by converting the magnetic polarity; the number of supports in each magnetic circuit unit is two, and the two supports are located on the two sides of the coil assembly along the Y-axis direction and are used to support the armature assembly.

10. A relay according to claim 9, wherein the relay is a latching relay. Each magnetic driving end is provided with a protruding portion on both sides along the Y-axis direction, and each support is provided with two connecting holes along the Z-axis direction, which are adapted to be inserted and matched with the two protruding portions located on the same side along the Y-axis direction; each armature assembly comprises an armature, a main body, a protruding shaft and an oscillating portion which are fixedly connected 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 is partially located in the main body; both ends of each armature extend out of the main body and form an attraction portion adapted to be attracted to the corresponding magnetic driving end; the number of protruding shafts in each armature assembly is two and extends out of the main body from both sides along the Y-axis direction away from each other; the oscillating portion extends out of the main body perpendicular to the Y-axis direction to cooperate with the pusher; each support is provided with an axle hole in rotational cooperation with the corresponding protruding shaft, and the axle hole is located between the two connecting holes along the Z-axis direction.

11. A relay according to claim 10, wherein the relay is a latching relay. The armature assembly further comprises a permanent magnet located in the main body, and the two armatures are connected to two magnetic pole surfaces of the permanent magnet; the main body, the protruding shaft and the oscillating portion are all made of plastic material, and the main body, the protruding shaft, the oscillating portion, the armature and the permanent magnet are integrally formed by insert injection molding.

12. A relay according to claim 10, wherein the relay is a latching relay. The pusher moves along the Z-axis direction, the extension direction of the oscillating portion is perpendicular to the extension direction of the armature, and the moving spring group extends along the X-axis direction.

13. A relay according to claim 12, wherein the relay is a latching relay. The pusher is provided with a first matching hole and a second matching hole along the Z-axis direction, the second matching hole is used for the moving spring group to extend into along the X-axis direction towards the winding axis, and the first matching hole is used for the oscillating portion to extend into along a direction opposite to the direction in which the moving spring group extends into the second matching hole; the pusher is provided with a sliding cooperation portion on both sides along the Y-axis direction, and the housing is provided with two sliding grooves in sliding cooperation with the corresponding sliding cooperation portions along the Z-axis direction.

14. A relay according to claim 13, wherein the relay is a latching relay. The moving contact group is closed downward along the Z-axis direction with the corresponding static contact group; in a first projection plane perpendicular to the Z-axis direction, the projection of the sliding cooperation portion at least partially overlaps with the projection of at least one load terminal; along the Z-axis direction, a first intersection point is located above the rotation axis, the first intersection point is the intersection point of a first plane and a 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, the straight line being made by the contact point between the oscillating portion and the pusher when the moving contact group is closed with the corresponding static contact group.

15. A relay as described in claim 13 or 14, characterized in that, All positions where the pushing member contacts the swing part are closer to the rotation axis than the second matching hole in the X-axis direction.

16. A relay according to claim 15, wherein the relay is a latching relay. The first matching hole is provided with a first abutting part adapted to be abutted upward by the swing part and a second abutting part adapted to be abutted downward by the swing part on both sides in the Z-axis direction; the first abutting part and the second abutting part are both outwardly turned from the hole wall of the first matching hole in the X-axis direction; the surfaces of the first abutting part and the second abutting part adapted to contact the swing part are both smooth curved surfaces.

17. A relay according to claim 16, wherein the relay is a latching relay. The part of the pushing member between the first abutting part and the second abutting part is bent in the upward direction to be closer to the rotation axis, the outward turning directions of the first abutting part and the second abutting part are away from each other, and the first abutting part is outwardly turned away from the rotation axis.

18. A relay according to claim 10, wherein the relay is a miniature relay. The pushing member moves in the X-axis direction, the extension direction of the swing part is parallel to the extension direction of the armature, and the moving spring group extends in the Z-axis direction.

19. A relay according to claim 18, wherein the relay is a latching relay. The pushing member is provided with the first matching hole for the swing part to extend into in the Z-axis direction and the second matching hole for the moving spring group to extend into in the Z-axis direction in the X-axis direction.

20. A relay according to claim 13, wherein The shell comprises a base and a cover, the magnetic circuit part, the contact part and the pushing part are attached to the base, each coil terminal and each load terminal penetrates the base downward in the Z-axis direction, the cover is downwardly provided on the base in the Z-axis direction and is fixedly connected with the base; the sliding groove is provided on the base, the base is provided with the insertion slot corresponding to the supporting piece, and the supporting piece is inserted into the corresponding insertion slot downward in the Z-axis direction.

21. A relay according to claim 20, wherein the relay is a miniature relay. The base comprises a first seat body and a second seat body, the coil assembly is fixedly connected to the first seat body in the Z-axis direction, each coil terminal penetrates the first seat body in the Z-axis direction, the sliding groove and the insertion slot are provided on the first seat body, and each load terminal penetrates the second seat body in the Z-axis direction; the first seat body, the magnetic circuit part and the pushing part jointly form a first combined body, the second seat body and the contact part jointly form a second combined body, the first combined body and the second combined body are inserted in the X-axis direction, after being inserted in place, the moving spring group extends into the second matching hole in the X-axis direction, the first seat body and the second seat body are clamped and matched in the X-axis direction, and the first combined body and the second combined body are limited and matched with each other in the Y-axis direction and the Z-axis direction.

22. A relay according to claim 21, wherein the relay is a miniature relay. The first seat body is provided with a first limiting block, a second limiting block and a first clamping block in the X-axis direction towards the second seat body, the second seat body is provided with a second clamping block in the X-axis direction towards the first seat body, the first limiting block is located above the second limiting block in the Z-axis direction, after the first combined body and the second combined body are inserted in place in the X-axis direction, the first clamping block and the second clamping block are clamped and matched in the X-axis direction, at least one load terminal is inserted between the first limiting block and the second limiting block in the X-axis direction and is limited and matched with the first limiting block and the second limiting block in the Z-axis direction.

23. A relay according to claim 22, wherein the relay is a miniature relay. The load terminal is gap-fitted with the first limiting block and the second limiting block along the Z-axis direction, the length of the second limiting block fitted with the load terminal along the X-axis direction is less than the length of the first limiting block fitted with the load terminal along the X-axis direction, so that the second assembly is allowed to deflect downward relative to the first assembly when the first assembly or the second assembly is subjected to a force downward along the Z-axis direction, until the second clamping block is disengaged from the first clamping block along the X-axis direction.

24. A relay according to claim 22, wherein the relay is a miniature relay. The number of the second limiting blocks is at least two, each second limiting block is arranged along the Y-axis direction, and at least two adjacent second limiting blocks form a first interval along the Y-axis direction, the second seat body is provided with an insertion block adapted to extend into the first interval along the X-axis direction, and the insertion block is limited-fitted with the corresponding two second limiting blocks along the Y-axis direction after the second assembly is inserted into the first assembly along the X-axis direction; each of the two second limiting blocks forming the first interval is provided with the first clamping block on one side adjacent to the other second limiting block, and the insertion block is provided with the second clamping block corresponding to the first clamping block on both sides along the Y-axis direction.

25. A relay according to claim 20, wherein the relay is a miniature relay. The base, the contact portion and the pushing portion jointly form a third assembly, each magnetic circuit unit is inserted-fitted with the base along the X-axis direction, the swing portion extends into the first fitting hole away from the rotation axis after the magnetic circuit unit is inserted into place, and the cover body is arranged around the coil holder along the X-axis direction to prevent the magnetic circuit unit from being disengaged from the third assembly along the X-axis direction; the supporting member is interference-fitted with the corresponding protruding portion.

26. A relay according to claim 20, wherein the relay is a miniature relay. The base comprises 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 penetrates the third seat body along the Z-axis direction, the insertion slot is arranged on the third seat body, the sliding slot is arranged on the fourth seat body, and each load terminal penetrates the fourth seat body along the Z-axis direction; the third seat body and the magnetic circuit portion jointly form a fourth assembly, the fourth seat body and the pushing portion and the contact portion jointly form a fifth assembly, the fourth assembly and the fifth assembly are inserted along the X-axis direction, the swing portion extends into the first fitting hole along the X-axis direction after being inserted into place, the third seat body and the fourth seat body are clamped-fitted along the X-axis direction, and the fourth assembly and the fifth assembly are limited-fitted with each other along the Y-axis direction and the Z-axis direction.

27. A relay according to claim 20, wherein the relay is a miniature relay. The base comprises a fifth seat body, a sixth seat body and a seventh seat body, the coil assembly is fixed to the fifth seat body along the Z-axis direction, each coil terminal penetrates the fifth seat body along the Z-axis direction, the slot is arranged on the fifth seat body, the sliding slot is arranged on the sixth seat body, and each load terminal penetrates the seventh seat body along the Z-axis direction; the fifth seat body and the magnetic circuit part jointly form a sixth assembly; the sixth seat body and the pushing part jointly form a seventh assembly; the seventh seat body and the magnetic circuit part jointly form an eighth assembly; the sixth assembly, the seventh assembly and the eighth assembly are inserted along the X-axis direction, after being inserted in place, the moving spring group extends into the second matching hole along the X-axis direction, the swing part extends into the first matching hole along the X-axis direction, the fifth seat body is in clamping cooperation with the sixth seat body, and the sixth assembly and the seventh assembly are in limiting cooperation with each other along the Y-axis direction and the Z-axis direction, and the sixth seat body is in clamping cooperation with the seventh seat body, and the seventh assembly and the eighth assembly are in limiting cooperation with each other along the Y-axis direction and the Z-axis direction.

28. A relay according to claim 4, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The part of the pushing member adapted to contact the moving spring group is made of metal.

29. A relay according to claim 28, wherein the relay is a miniature relay. The pushing member is made of metal.

30. A relay according to claim 29, wherein the relay is a miniature relay. The pushing member is a stainless steel sheet metal part or an aluminum casting part or an aluminum alloy casting part.

31. A relay according to claim 28, wherein the relay is a miniature relay. The pushing member comprises a base body and a sliding cooperation part, the part of the pushing member adapted to contact the moving spring group and the part of the pushing member adapted to contact the armature assembly are both formed on the base body, the base body is made of metal, the sliding cooperation part is fixed to both sides of the base body along the Y-axis direction, and the sliding cooperation part is in sliding cooperation with the shell along the movement direction of the pushing member; the sliding cooperation part is made of plastic, and the sliding cooperation part and the base body are integrally formed by insert injection molding.

32. A relay according to claim 31, wherein the relay is a miniature relay. The base body is a stainless steel sheet metal part or an aluminum casting part, and the size of the sliding cooperation part along the X-axis direction is greater than the thickness of the base body along the X-axis direction.

33. A relay according to claim 4, wherein the movable contact is a reed. The number of the magnetic circuit units is two, the number of the load terminals is three, and the number of the common terminal is one.

34. A relay according to claim 33, wherein the relay is a miniature relay. The shell comprises a base, and the contact part is attached to the base, and each load terminal penetrates the base downward along the Z-axis direction; of the load terminals, two load terminals except the common terminal are arranged along the Y-axis direction.

35. A relay according to claim 34, wherein the relay is a miniature relay. The part of the common terminal extending downward is located in the middle of the base along the Y-axis direction.

36. A relay according to claim 34, wherein the relay is a miniature relay. The pushing member moves along the Z-axis direction, and the moving spring group extends along the X-axis direction; each load terminal is provided with a connection part perpendicular to the Z-axis direction, and the connection part is used for connecting the stationary contact group and / or the moving spring group; the connection part of the common terminal is located above or below the connection parts of the two load terminals except the common terminal along the Z-axis direction, and the connection parts of the two load terminals except the common terminal are located in the same plane along the Z-axis direction.

37. A relay according to claim 36, wherein the relay is a miniature relay. The part of the common terminal extending downward is located in the middle of the base along the Y-axis direction; the connection part 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 the two magnetic circuit units.

38. A relay according to claim 37, wherein the relay is a miniature relay. 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 connected with the static contact group or 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 load terminals except the common terminal; or, the first arm and the second arm are connected with the static contact group and the moving contact group respectively; the first arm connected with the static contact group is closer to the magnetic circuit part along the X-axis direction.

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