A relay and an electric meter

Abstract

The present application discloses a relay and an electric meter. The relay includes a fixed part and a moving contact part, and the moving contact part moves relative to the fixed part along the X-axis direction to close or disconnect the moving contact with the static contact along the X-axis direction; one of the fixed part and the moving contact part is provided with a slide groove, and the other of the two is provided with a guide part; the slide groove extends along the X-axis direction, and the guide part extends into the slide groove along the Y-axis direction and slides with the slide groove along the X-axis direction; at least one guide part is a first guide part, and both sides of the first guide part along the Z-axis direction are provided with a contact part suitable for contacting the side groove wall of the slide groove along the Z-axis direction, and both sides of the contact part along the X-axis direction are adjacent to the correction part, and the correction part forms a first projection on the first projection plane perpendicular to the Y-axis direction, and the outer edge of the first projection is a convex curve and its curvature radius is greater than half of the size of the first guide part along the Z-axis direction. The electric meter includes the above relay. The above technical solution is adopted, and the guiding effect is better.

Description

Technical Field

[0001] The present application relates to the field of relays, and in particular to a relay and an electric meter. Background Art

[0002] The relay in the prior art includes a fixed part, a moving contact part and a magnetic circuit part. The fixed part includes a container and a static contact group. In an optional configuration, the static contact group includes two static contacts, which are fixed to the container and are used to connect the power supply and load of the external circuit respectively. Each static contact is provided with a static contact, and the static contacts of the two static contacts are arranged along the Z-axis direction. In this configuration, the moving contact part includes a moving contact group, a pusher, an elastic bracket group and a limiter. The pusher is generally made of plastic injection molding to electrically isolate the magnetic circuit part and the moving contact group from each other. The moving contact group generally includes at least one moving contact, and the moving contact is provided with a current bridge and two moving contacts. The current bridge extends along the Z-axis direction. The two moving contacts are arranged along the Z-axis direction and fixed to the current bridge. The two moving contacts are against the static contacts on the corresponding static contacts in the closing direction and away from the static contacts on the corresponding static contacts in the disconnecting direction. The closing direction and the disconnecting direction are both in the X-axis direction and deviate from each other. The pusher moves along the X-axis direction to drive the moving contact to close or disconnect with the static contact along the X-axis direction. The elastic bracket group is installed between the pusher and the moving contact group along the X-axis direction, which stores energy when the moving contact and the static contact are closed, and releases energy when the moving contact is disconnected from the static contact. The limiter is fixed relative to the pusher, and abuts the moving contact along the disconnection direction when the moving contact is disconnected from the static contact to limit the distance between the moving contact and the static contact. The magnetic circuit part is used to drive the pusher to move along the X-axis direction. In order to reduce energy consumption, the magnetic circuit part in the prior art generally has a magnetic holding function. In the prior art, the magnetic circuit part with a magnetic holding function includes two types: a swinging type and a direct-acting type. The swinging magnetic circuit part includes a coil assembly fixed relative to the accommodation part and an armature assembly swinging relative to the accommodation part. The coil assembly generally includes a coil winding, an iron core and two yokes. The iron core is placed in the coil winding, and two yokes are fixed to the two ends of the iron core. The two yokes are formed at one end away from the iron core to form two magnetic drive ends, and the two magnetic drive ends are arranged along the first direction. The armature assembly includes a permanent magnet and two armatures, and the permanent magnet and the two armatures are arranged in an I-shaped layout. The two armatures are parallel to each other and the permanent magnet is clamped therein. The coil winding is excited by a pulse electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, so that the two magnetic drive ends attract different parts of the armature assembly along the X-axis direction and drive the armature assembly to swing relative to the accommodating member around a rotation axis perpendicular to the first direction. The armature assembly drives the pusher to move along the X-axis direction through a swing arm. The direct-acting magnetic circuit part includes a coil winding, a static iron core, a yoke plate, a yoke tube, a permanent magnet and an armature. The coil winding, the static iron core, the yoke plate, the yoke tube and the permanent magnet are fixed to the accommodating member, and the armature moves linearly relative to the shell between the yoke plate and the static iron core. The armature is generally fixedly connected to the pusher to drive the pusher to move along the X-axis direction.

[0003] Generally, the surface of the part where the moving contact and the static contact collide with each other is roughly a part of a sphere or a part of a spherical surface. If the moving contact and the static contact are misaligned with each other along the Z-axis direction and / or the Y-axis direction, the part where the moving contact and the static contact collide may not be at the top of the moving contact and the static contact, which will increase the contact resistance between the moving contact and the static contact, and will also make the moving contact not fast enough when disconnecting from the static contact and make the arcing position of the moving contact and the static contact uncertain, and the arcing time is longer, which is not good for the life of the moving contact and the static contact. In order to solve this problem, the relay generally has two guide rods on both sides of the moving contact part along the Z-axis direction. The guide rods extend along the X-axis direction. One of the moving contact part and the accommodating part is fixedly connected to the guide rod, and the other of the two slides with the guide rod along the X-axis direction. In practice, the guiding effect of the above-mentioned guiding structure is still not ideal. Utility Model Content

[0004] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology and to provide a relay whose guiding effect is better than that of the prior art.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] The first technical scheme relates to a relay, which includes a fixed part and a moving contact part, the fixed part is provided with a static contact, the moving contact part is provided with a moving contact, the moving contact part closes or disconnects the moving contact with the static contact along the X-axis direction by moving relative to the fixed part along the X-axis direction; one of the fixed part and the moving contact part is provided with a slide groove, and the other of the two is provided with a guide part; the slide groove extends along the X-axis direction, the guide part extends into the slide groove along the Y-axis direction and slides with the slide groove along the X-axis direction; at least one guide part is a first guide part, and both sides of the first guide part along the Z-axis direction are provided with a resistance part suitable for resisting the side groove wall of the slide groove along the Z-axis direction, and both sides of the resistance part along the X-axis direction are adjacent to the correction part, and the correction part forms a first projection on a first projection plane perpendicular to the Y-axis direction, and the outer edge of the first projection is a convex curve and its curvature radius is greater than half of the size of the first guide part along the Z-axis direction.

[0007] The second technical solution is based on the first technical solution, wherein at least one first guide portion forms a second projection on the first projection plane, and the second projection is an ellipse whose major axis extends along the X-axis direction.

[0008] The third technical solution is based on the second technical solution, wherein the first guide portion is ellipsoidal.

[0009] The fourth technical solution is based on the second technical solution, wherein the first guide portion is in the shape of an elliptical cylinder.

[0010] The fifth technical solution is based on the first technical solution, wherein the interference portion is a plane perpendicular to the Z-axis direction.

[0011] The sixth technical solution is based on the first technical solution, wherein the guide portion has only a second guide portion in addition to the first guide portion, the second guide portion forms a third projection on the first projection surface, and the third projection is circular.

[0012] The seventh technical solution is based on the first technical solution, wherein at least one slide groove is a first slide groove, and a protrusion is provided at the bottom of the first slide groove, which protrudes from the bottom of the groove along the Y-axis direction and extends along the X-axis direction.

[0013] The eighth technical solution is based on the seventh technical solution, wherein recesses are provided between the protrusion of the first sliding groove and the side groove walls on both sides.

[0014] The ninth technical solution is based on the seventh technical solution, wherein the number of the first sliding grooves is at least two, and the openings of at least two first sliding grooves are facing or away from each other along the Y-axis direction.

[0015] The tenth technical solution is based on the ninth technical solution, wherein at least two first slide grooves having openings facing or away from each other along the Y-axis direction are arranged along the Y-axis direction.

[0016] The eleventh technical scheme is based on any one of the first to tenth technical schemes, wherein the fixed part includes a receiving member and a static contact member group fixed to each other, the static contact member group includes two static contacts, the static contacts are formed on the static contacts, and the static contacts of the two static contacts are arranged along the Z-axis direction; the moving contact part includes a moving contact member group, a pushing member, an elastic bracket group and a limiting member; the moving contact member group includes a moving contact member, and the moving contact member is provided with two moving contacts along the Z-axis direction, and the two moving contacts are suitable for closing or disconnecting with the static contacts of the corresponding static contacts along the X-axis direction; the pushing member moves along the X-axis direction to drive the moving contact to close or disconnect with the static contact along the X-axis direction; the elastic bracket group is installed between the pushing member and the moving contact member group along the X-axis direction; the limiting member is fixed relative to the pushing member, and abuts against the moving contact along the disconnection direction when the moving contact is disconnected from the static contact; at least one guide portion is provided on the limiting member, and the guide portion provided on the limiting member is called a proximal guide portion.

[0017] The twelfth technical solution is based on the eleventh technical solution, wherein the proximal guide portion is the first guide portion.

[0018] The thirteenth technical solution is based on the eleventh or twelfth technical solution, wherein at least two proximal guide portions are arranged along the Z-axis direction.

[0019] The fourteenth technical solution is based on the eleventh or twelfth technical solution, wherein at least two proximal guide portions are arranged along the Y-axis direction and extend into corresponding sliding grooves away from each other along the Y-axis direction.

[0020] The fifteenth technical solution is based on the fourteenth technical solution, wherein the number of the proximal guide parts is two, and the two proximal guide parts are centered between the two moving contacts along the Z-axis direction.

[0021] The sixteenth technical solution is based on the eleventh technical solution, wherein the moving contact part also includes a connecting piece, which is integrally formed with the pushing piece by injection molding; the connecting piece extends along the Y-axis direction, and its two ends respectively extend out of the pushing piece to form two connecting ends; the limiting piece is also provided with a limiting body fixedly connected to the first guide portion, and the limiting body is provided with a limiting portion and two connecting portions which are connected to each other as a whole, and the limiting portion is suitable for abutting the moving contact piece along the disconnecting direction, and the two connecting portions respectively extend from the two ends of the limiting portion along the Y-axis direction along the disconnecting direction and are fixedly connected to the corresponding connecting ends, and the proximal guide portion extends from the connecting portion along the Y-axis direction.

[0022] The seventeenth technical solution is based on the sixteenth technical solution, wherein the material of the limiting member is metal, and the proximal guide portion is stamped on the connecting portion.

[0023] The eighteenth technical solution is based on the sixteenth technical solution, wherein the material of the limiting body is metal, the material of the proximal guide part and the accommodating part are both plastic, and the proximal guide part and the limiting body insert are integrally injection molded or bonded or screwed.

[0024] The nineteenth technical solution is based on the eleventh technical solution, wherein at least one guide portion is arranged on the pushing member, and the guide portion arranged on the pushing member is called a distal guide portion.

[0025] The twentieth technical solution is based on the nineteenth technical solution, wherein the distal guide portion is the first guide portion.

[0026] The twenty-first technical solution is based on the nineteenth technical solution, wherein at least one proximal guide portion and one distal guide portion extend into corresponding sliding grooves away from each other along the Y-axis direction.

[0027] The twenty-second technical solution is based on the nineteenth to twenty-first technical solutions, wherein at least two distal guide portions are arranged along the Z-axis direction.

[0028] The twenty-third technical solution is based on the nineteenth to twenty-first technical solutions, wherein at least two distal guide portions are arranged along the Y-axis direction and extend into corresponding sliding grooves away from each other along the Y-axis direction.

[0029] The twenty-fourth technical solution is based on the twenty-third technical solution, wherein the number of distal guide parts is two, and the two distal guide parts are centered between the two moving contacts along the Z-axis direction.

[0030] The twenty-fifth technical solution is based on the eleventh technical solution, wherein the guide portion includes two precision-fitting guide portions, which are arranged along the Y-axis direction and extend into the corresponding slide grooves away from each other along the Y-axis direction, and the fitting clearance formed by the precision-fitting guide portion and the corresponding slide groove along the Z-axis direction is smaller than the fitting clearance formed by the non-precision-fitting guide portion and the corresponding slide groove along the Z-axis direction.

[0031] The twenty-sixth technical solution is based on the twenty-fifth technical solution, wherein the precise matching guide portion is the first guide portion.

[0032] The twenty-seventh technical solution is based on the twenty-sixth technical solution, wherein the precision matching guide portion is a proximal guide portion.

[0033] The twenty-eighth technical solution is based on the twenty-seventh technical solution, wherein the precision matching guide portion is centered between the two moving contacts along the Z-axis direction.

[0034] The twenty-ninth technical solution is based on any one of the twenty-fifth to twenty-eighth technical solutions, wherein two non-precision fitting guide portions are arranged along the Y-axis direction and extend into the corresponding slide grooves away from each other along the Y-axis direction; the fitting clearance along the Y-axis direction between the two non-precision fitting guide portions arranged along the Y-axis direction and the corresponding slide grooves is smaller than the fitting clearance along the Y-axis direction between the two precision fitting guide portions and the corresponding slide grooves.

[0035] The thirtieth technical solution is based on the eleventh technical solution, and it also includes a magnetic circuit part, which includes: an armature assembly, which is fixed to the pushing member and includes a permanent magnet and two armatures, the two armatures are respectively fixed to the two magnetic poles of the permanent magnet, and the projections of the two armatures on the first projection plane intersect with each other; and a coil assembly, which is provided with two magnetic drive ends, and the two magnetic drive ends are arranged along the Z-axis direction. The coil assembly is excited by a pulse electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, so as to switch and attract different positions of the two armatures in the X-axis direction and drive the armature assembly to move along the X-axis direction.

[0036] The thirty-first technical solution is based on the thirtieth technical solution, wherein the armature assembly and the pusher insert are integrally formed by injection molding.

[0037] The thirty-second technical solution is based on the thirtieth technical solution, wherein each armature is provided with two suction parts, the two suction parts are arranged corresponding to the two magnetic drive ends, and the suction parts are suitable for suctioning the corresponding magnetic drive ends along the X-axis direction.

[0038] The thirty-third technical solution is based on the thirty-second technical solution, wherein the two armatures are respectively the first armature and the second armature, the two suction parts of the first armature are respectively the first suction part and the second suction part, and the two suction parts of the second armature are respectively the third suction part and the fourth suction part; the armature assembly moves between the first position and the second position along the X-axis direction; in the first position, the first suction part and the third suction part respectively suction the two magnetic drive ends to disconnect the moving contact group from the static contact group; in the second position, the fourth suction part and the second suction part respectively suction the two magnetic drive ends to close the moving contact group from the static contact group.

[0039] The thirty-fourth technical solution relates to an electric meter, which includes a relay as described in any one of the first to thirty-third technical solutions.

[0040] Compared with the prior art, the above solution has the following beneficial effects:

[0041] In the prior art, the guide rod is slidably matched with one of the moving contact part or the fixed part. Since the guide rod extends along the X-axis direction and the moving contact part moves along the X-axis direction, the portion of the guide rod suitable for sliding fit is longer along the X-axis direction, and the length of the guide rod extending from the moving contact part is also longer, which is easy to bend and deform, resulting in an unsatisfactory guiding effect. In the first technical solution, the guide part extends into the slide groove along the Y-axis direction and is slidably matched with the slide groove along the X-axis direction. Since the direction in which the guide part extends into the slide groove is perpendicular to the movement direction of the moving contact part, the portion of the guide part suitable for sliding fit is much shorter than that in the prior art, and is not easy to bend and deform, and its guiding effect is better than that in the prior art.

[0042] In the first technical solution, since the guide portion extends into the slide groove along the Y-axis direction, the size of the fitting surface between the guide portion and the slide groove can be set smaller than that of the prior art. Compared with the prior art, the friction between the slide groove and the guide portion can be reduced, and the required driving force of the magnetic circuit portion can be made smaller, thereby reducing the volume of the magnetic circuit portion, which is conducive to the miniaturization of the relay.

[0043] In the first technical solution, the outer edge of the first projection of the correction part of the first guide part on the first projection plane is a convex curve. Compared with other technical solutions, even if the first guide part is slightly deflected on the plane perpendicular to the Y-axis direction, the sliding cooperation with the slide groove is not prone to jamming, which is beneficial to avoid the need to increase the driving force of the magnetic circuit part due to jamming, which is beneficial to reduce the useless work of the magnetic circuit part, and thus is beneficial to reduce the power consumption of the coil assembly.

[0044] In the first technical scheme, the radius of curvature of the convex curve formed by the outer edge of the first projection is greater than half of the dimension of the guide portion along the Z-axis direction, which is not only conducive to avoiding jamming of the sliding fit between the first guide portion and the slide groove, but also compared with the comparative technical scheme in which the radius of curvature is less than or equal to half of the dimension of the guide portion along the Z-axis direction, it can have a better guiding effect on the movement of the moving contact part along the X-axis direction, which is conducive to the correct closure of the moving contact with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time for pulling the arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay. Specifically, taking the first guide portion being arranged on the moving contact portion as an example, when the first guide portion is slightly deflected relative to the fixed portion on a plane perpendicular to the Y-axis direction, compared with the comparative technical solution, the correction portion can contact the side groove walls on both sides of the slide groove up and down along the Z-axis direction at a smaller deflection angle, so that the side groove walls on both sides of the slide groove exert a reaction force on the correction portion, and the reaction force is conducive to the reverse deflection of the moving contact portion, thereby achieving a correction effect. This correction effect can better guide the movement of the moving contact portion along the X-axis direction. Accordingly, in the case where the slide groove is arranged on the moving contact portion, when the slide groove is slightly deflected on a plane perpendicular to the Y-axis direction, compared with the comparative technical solution, the side groove walls on both sides of the slide groove can contact the correction portion up and down along the Z-axis direction at a smaller deflection angle, so that the correction portion exerts a reaction force on the side groove walls on both sides of the slide groove, and the reaction force is conducive to the reverse deflection of the moving contact portion, thereby achieving a correction effect.

[0045] In the first technical solution, since the first guide part has a deviation correction function on a plane perpendicular to the Y-axis direction, the moving contact part is allowed to cooperate with the slide groove using only the first guide part. If other guide parts are used to prevent excessive deflection in other directions, by providing the first guide part, other guide parts are allowed not to precisely cooperate with the corresponding slide groove along the Z-axis direction, that is, other guide parts and corresponding slide grooves are allowed to have a relatively large matching clearance, thereby avoiding over-positioning and ensuring that the moving contact part and the fixed part will not be unable to be assembled in place due to manufacturing errors.

[0046] The second technical solution is one of the specific implementations of the first technical solution. The second projection is an ellipse whose major axis extends in the X-axis direction, so the abutment of the first guide portion is a point or a line segment extending in the Y-axis direction, the contact area between the abutment portion and the side groove wall of the slide groove is smaller, the friction between the first guide portion and the slide groove is smaller, and the required driving force of the magnetic circuit portion is smaller, thereby reducing the volume of the magnetic circuit portion, which is conducive to miniaturization of the relay.

[0047] The third technical solution is one of the specific implementations of the second technical solution. When the first guide portion is ellipsoidal, the abutment portion of the first guide portion is a point. Compared with the technical solution in which the first guide portion is ellipsoidal, the contact area between the abutment portion and the side groove wall of the slide groove is smaller, and the friction between the first guide portion and the slide groove is smaller, so that the required driving force of the magnetic circuit portion is smaller, thereby reducing the volume of the magnetic circuit portion, which is conducive to miniaturization of the relay.

[0048] The fourth technical solution is another specific implementation of the second technical solution. When the first guide portion is in the shape of an elliptical cylinder, the interference portion of the first guide portion is a line segment extending along the Y-axis direction. Compared with the technical solution in which the first guide portion is in the shape of an ellipsoid, the moving contact part is less likely to deflect on a plane perpendicular to the X-axis direction, thereby providing a better guiding effect on the movement of the moving contact part along the X-axis direction, which is beneficial for the moving contact to correctly close with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time it takes to pull an arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay.

[0049] The fifth technical solution is another specific implementation of the first technical solution. The resistance portion is a plane perpendicular to the Z-axis direction, and the plane must have dimensions in the X-axis direction and the Y-axis direction. Therefore, compared with the second to fourth technical solutions, the moving contact part is less likely to deflect on the plane perpendicular to the Y-axis direction and the plane perpendicular to the X-axis direction, thereby being able to provide a better guiding effect on the movement of the moving contact part along the X-axis direction, which is beneficial for the moving contact to correctly close with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time it takes to pull an arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay.

[0050] In the sixth technical solution, the guide part has only the second guide part in addition to the first guide part, and the third projection of the second guide part is circular. Under the premise that the first guide part already exists to improve the guiding effect, the second guide part is arranged to facilitate the cooperation with the first guide part to avoid jamming in the sliding cooperation with the slide groove, thereby reducing the power consumption of the coil assembly. At the same time, compared with the guide part with a non-circular third projection in addition to the first guide part, all guide parts are easier to extend into the corresponding slide groove along the Z-axis direction, so it is easier for the moving contact part and the fixed part to establish a sliding cooperation relationship along the X-axis direction.

[0051] In the seventh technical solution, a protrusion is provided at the bottom of the first chute, and the protrusion protrudes from the bottom of the chute along the Y-axis direction and extends along the X-axis direction. Therefore, the top of the guide portion along the Y-axis direction is suitable for sliding cooperation with the protrusion, and compared with the direct sliding cooperation between the top of the guide portion along the Y-axis direction and the bottom of the chute, the sliding cooperation area is smaller, which can reduce the friction between the chute and the guide portion, and make the required driving force of the magnetic circuit part smaller, thereby reducing the volume of the magnetic circuit part, which is conducive to miniaturization of the relay.

[0052] In the eighth technical solution, recesses are provided between the protrusion of the first slide groove and the side groove walls on both sides. The protrusion of the first slide groove abuts against the top of the guide portion along the Y-axis direction, and the debris generated by the friction between the two will fall into the recesses on both sides without affecting the sliding fit between the guide portion and the protrusion, thereby avoiding jamming or increased friction due to residual debris on the sliding fit surface.

[0053] In the ninth technical scheme, at least two openings of the first slide grooves are facing or away from each other along the Y-axis direction, and the protrusions of the two first slide grooves are facing or away from each other along the Y-axis direction to abut the top ends of the corresponding guide parts along the Y-axis direction, which is beneficial to make the matching clearance between the guide part and the first slide groove along the Y-axis direction smaller. When the moving contact part moves along the X-axis direction, it is less likely to deflect on the plane perpendicular to the Z-axis direction, and the guiding effect is better, which is beneficial to the correct closure of the moving contact with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time for pulling the arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay. This is because, as is well known, when no protrusion is provided at the bottom of the slide groove, due to the shrinkage effect during the cooling process during injection molding, it is difficult to ensure the tolerance of the size of the bottom of the slide groove along the Y-axis direction. However, by providing a protrusion protruding along the Y-axis direction at the bottom of the groove, it is easier to ensure the size of the protrusion along the Y-axis direction and the straightness of the top of the protrusion along the X-axis direction, so that the gap with the guide portion along the Y-axis direction can be smaller.

[0054] Based on the ninth technical solution, the tenth technical solution further limits the first slide groove whose two openings are facing or away from each other to be arranged along the Y-axis direction. Compared with the technical solution in which the first slide groove whose two openings are facing or away from each other is not arranged along the Y-axis direction, it is beneficial to avoid the deflection of the guide part on the plane perpendicular to the Z-axis direction. Therefore, the guiding effect is better, which is beneficial to the correct closure of the moving contact with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time for pulling the arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay.

[0055] In the eleventh technical scheme, the two moving contacts are arranged along the Z-axis direction, and the guide part extends into the slide groove along the Y-axis direction. Therefore, the arrangement direction of the two moving contacts is perpendicular to the direction in which the guide part extends into the slide groove. Compared with the scheme in which the arrangement direction of the moving contacts is the same as the direction in which the guide part extends into the slide groove, it more reasonably utilizes the space in three directions of the relay and can reduce the size of the relay along the Z-axis direction.

[0056] In the eleventh technical solution, the two moving contacts are suitable for closing or opening with the corresponding static contacts along the X-axis direction. Under this structure, the safety distance between the moving contact and the static contact is twice the actual distance between the moving contact and the corresponding static contact along the X-axis direction. Therefore, the relay has higher safety and stronger load capacity, and is more conducive to improving the safety distance between the moving contact and the static contact.

[0057] In the eleventh technical solution, the proximal guide portion is arranged on the limiter, which means that the slide groove is arranged on the accommodating member. Since the static contact member group is fixedly connected to the accommodating member, the slide groove is arranged on the accommodating member to ensure that the extension direction of the slide groove is perpendicular to the arrangement direction of the static contact points of the two static contacts, so that the slide groove guides the guide portion along the X-axis direction more accurately.

[0058] In the eleventh technical solution, since the limiter has been in contact with the moving contact before the pusher moves in the closing direction and enters the overtravel, and the moving contact has already contacted the corresponding static contact when entering the overtravel, a near guide portion is provided on the limiter, which can better guide the moving contact to move in the X-axis direction, so that the moving contact can correctly close with the static contact in the X-axis direction, reduce the contact resistance between the moving contact and the static contact, and also shorten the arc pulling time when the moving contact and the static contact are disconnected, which is beneficial to increase the life of the moving contact and the static contact. This is because the guide portion and the slide groove slide in the X-axis direction, and a matching gap is inevitably formed between the two. If the guide portion and the moving contact are far apart in the X-axis direction, the matching gap will be magnified in the movement of the moving contact, making it more difficult for the moving contact to correctly contact the static contact in the X-axis direction.

[0059] In the eleventh technical solution, the elastic bracket group is arranged between the pusher and the moving contact group, and can provide elastic force to the moving contact group in the closing direction after the pusher experiences an overtravel, so that the moving contact can be closed with the static contact more reliably, and when the relay is subjected to a large fault current, the moving contact group is less likely to be separated from the static contact group, thereby avoiding destructive arcing and causing damage to the relay. The elastic bracket group can also generate additional repulsive force when the moving contact group is disconnected from the static contact group, helping the moving contact to disconnect from the static contact group.

[0060] In the eleventh technical solution, a limit member fixedly connected to the pushing member is provided, and the limit member abuts against the moving contact along the disconnection direction when the moving contact and the static contact are disconnected, thereby ensuring that the distance between the moving contact and the static contact meets the design requirements when the moving contact and the static contact are disconnected.

[0061] The twelfth technical scheme combines the technical effects of the first technical scheme and the eleventh technical scheme. The near guide portion is the first guide portion, which can better guide the movement of the moving contact part along the X-axis direction at a position closer to the moving contact piece along the X-axis direction, so that the moving contact can be more easily and correctly closed with the static contact along the X-axis direction.

[0062] In the thirteenth technical solution, at least two proximal guide portions are arranged along the Z-axis direction, making it less likely for the moving touch portion to deflect on a plane perpendicular to the Y-axis direction, thereby better guiding the movement of the moving touch portion along the X-axis direction.

[0063] In the fourteenth technical solution, the two proximal guides are arranged along the Y-axis direction and extend into the corresponding slide grooves away from each other along the Y-axis direction. Therefore, when the Z-axis direction is the gravity direction, the two slide grooves can support the two proximal guides along the Z-axis direction, thereby supporting the limiter. In this case, it is more conducive to preventing the moving contact part from deflecting on the plane perpendicular to the X-axis, so that the movement of the moving contact part along the X-axis direction can be better guided.

[0064] In the fifteenth technical solution, there are two near guide parts, and the two near guide parts are centered between the two moving contacts along the Z-axis direction. Therefore, the near guide part is centered along the Z-axis direction, which can save the space of the relay along the Z-axis direction and avoid the increase of the size of the relay along the Z-axis direction compared to the technical solution in which the near guide part is arranged along the Z-axis direction. At the same time, compared with the technical solution in which the near guide part is arranged along the Z-axis direction, it is less likely to cause the movement of the near guide part along the X-axis direction to get stuck due to the two slide grooves arranged along the Z-axis direction being not parallel to each other, so that the magnetic driving force of the magnetic circuit part is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly.

[0065] In the sixteenth technical solution, the connecting member and the pushing member are insert-molded as one piece, so that the limiting member is easier to fix relative to the pushing member, and the limiting member has stronger rigidity, better limiting effect on the moving contact group, and can also save the size of the relay along the Y-axis direction; the two ends of the connecting member along the Z-axis direction respectively extend out of the pushing member to form a connecting end fixedly connected to the limiting member, which can save the size of the relay along the Z-axis direction and create more favorable conditions for increasing the safety distance between the moving contact and the static contact in a limited space.

[0066] In the sixteenth technical solution, the proximal guide portion extends from the connecting portion along the Y-axis direction. When the proximal guide portion is the first guide portion, it is more conducive to realizing the first technical solution.

[0067] In the seventeenth technical solution, the proximal guide portion is stamped, which has fewer manufacturing steps, is simpler to manufacture, has lower cost, and the outer edge size and position of the proximal guide portion are easier to ensure, which is beneficial to better guide the movement of the moving contact part along the X-axis direction.

[0068] In the eighteenth technical solution, the materials of the near guide part and the receiving part are both plastic, which is conducive to avoiding scraping of the receiving part when the near guide part is made of metal material, and thus helps to prevent the scraping from falling on the moving contact and the static contact, affecting the contact resistance between the moving contact and the static contact. The material of the limit body is metal, so it has stronger rigidity and better limiting effect on the moving contact group. The near guide part and the limit body insert are integrally injection molded or bonded or screwed, and the combination of the two is better, and the position of the near guide part along the Z-axis direction is more accurate, which is conducive to better sliding cooperation with the slide groove along the X-axis direction.

[0069] In the nineteenth technical solution, a distal guide portion is provided on the pusher, a proximal guide portion is provided on the limiter, and the limiter is fixedly connected to the pusher, so the distal guide portion and the proximal guide portion cooperate with each other, which is beneficial to avoid the deflection of the whole formed by the pusher and the limiter fixedly connected to each other on a plane perpendicular to the Y-axis direction, and is beneficial to better guide the movement of the moving contact part along the X-axis direction. Therefore, it is beneficial to ensure that the moving contact is correctly closed with the static contact along the X-axis direction.

[0070] The twentieth technical scheme combines the technical effects of the first technical scheme and the nineteenth technical scheme. The distal guide portion is the first guide portion, which is not only conducive to avoiding jamming of the moving contact part when it moves along the X-axis direction, but also can have a better guiding effect on the movement of the moving contact part along the X-axis direction, especially for the movement of the moving contact part along the disconnection direction.

[0071] In the twenty-first technical solution, at least one proximal guide portion and one distal guide portion extend into the corresponding slide groove away from each other along the Y-axis direction, so when the Z-axis direction is the gravity direction, the two slide grooves can support at least one proximal guide portion and at least one distal guide portion along the Z-axis direction, thereby supporting the moving contact portion. In this case, it is more conducive to preventing the moving contact portion from deflecting on a plane perpendicular to the X-axis, so that the movement of the moving contact portion along the X-axis direction can be better guided.

[0072] In the twenty-second technical solution, at least two distal guide portions are arranged along the Z-axis direction, making it less likely that the moving touch part will deflect on a plane perpendicular to the Y-axis direction, thereby better guiding the movement of the moving touch part along the X-axis direction.

[0073] In the twenty-third technical solution, at least two distal guides are arranged along the Y-axis direction and extend into corresponding slide grooves away from each other along the Y-axis direction. Therefore, when the Z-axis direction is the gravity direction, the two slide grooves can support the two distal guides along the Z-axis direction, thereby supporting the pusher and the moving contact part. In this case, it is more conducive to preventing the moving contact part from deflecting on a plane perpendicular to the X-axis direction, so that the movement of the moving contact part along the X-axis direction can be better guided.

[0074] In the twenty-fourth technical solution, there are two distal guides, and the two distal guides are centered between the two moving contacts along the Z-axis direction. Therefore, the distal guide is centered along the Z-axis direction, which can save the space of the relay along the Z-axis direction and avoid the increase of the size of the relay along the Z-axis direction compared to the technical solution in which the distal guide is arranged along the Z-axis direction, and it is less likely to cause the distal guide to get stuck in the X-axis direction due to the two slide grooves arranged along the Z-axis direction being not parallel to each other, so that the magnetic driving force of the magnetic circuit part is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly.

[0075] In the twenty-fifth technical solution, the matching clearance formed by the precise matching guide part and the slide groove along the Z-axis direction is smaller than the matching clearance formed by the non-precise matching guide part and the slide groove along the Z-axis direction, which is conducive to reducing the difficulty of establishing sliding matching between all guide parts and the slide groove, reducing the manufacturing accuracy requirements of the moving contact part and the fixed part, and at the same time, it is also conducive to correctly guiding the movement of the moving contact part along the X-axis direction. This is because, if the matching clearance between all guide parts and the slide groove is small, the manufacturing accuracy requirements of the pusher and the limiter fixed to each other are high, and the matching accuracy requirements of the shell and the cover are also high, otherwise the guide part may not be inserted into the slide groove due to position or size deviation, so that the guide part cannot establish a sliding matching relationship with the slide groove; if the matching clearance between all guide parts and the slide groove is large, the sliding matching between the accommodating part and the moving contact part cannot correctly guide the movement of the moving contact part along the X-axis direction, and the moving contact part may deflect on the plane perpendicular to the Y-axis direction. Therefore, by providing a precise fitting guide portion and making the fitting clearance between the precise fitting guide portion and the slide groove smaller than the fitting clearance between the non-precise fitting guide portion and the slide groove, it is possible to reduce the manufacturing accuracy requirements of the moving contact part and the fixed part due to the relatively larger fitting clearance, and to correctly guide the movement of the moving contact part along the X-axis direction due to the relatively smaller fitting clearance.

[0076] In the twenty-sixth technical solution, the precision matching guide portion is the first guide portion. Therefore, as long as the precision matching guide portion is slightly deflected on the plane perpendicular to the Y axis, the side groove wall of the slide groove can be corrected by acting on the deviation correction portion because it is the first guide portion, thereby better exerting the unique guiding and anti-jamming effects of the first guide portion.

[0077] In the twenty-seventh technical scheme, the precision fitting guide portion is a near guide portion, and therefore the precision fitting guide portion is closer to the moving contact along the X-axis direction, which is more conducive to the correct closure of the moving contact with the static contact along the X-axis direction, thereby reducing the contact resistance between the moving contact and the static contact, shortening the length of time for pulling the arc when the moving contact is disconnected from the static contact, and increasing the life of the moving contact, the static contact and the entire relay.

[0078] In the twenty-eighth technical solution, the precise matching guide portion is placed in the middle of the near guide portion and the first guide portion along the Z-axis direction. Compared with the guide rods arranged on both sides along the Z-axis direction, it can save the space of the relay along the Z-axis direction and avoid the increase of the size of the relay along the Z-axis direction. At the same time, compared with the technical solution in which the near guide portion is arranged along the Z-axis direction, it is less likely to cause the movement of the near guide portion along the X-axis direction to become stuck due to the two slide grooves arranged along the Z-axis direction being not parallel to each other, so that the magnetic driving force of the magnetic circuit part is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly.

[0079] In the twenty-ninth technical solution, the matching clearance between the two non-precision matching guide parts arranged along the Y-axis direction and the corresponding slide grooves along the Y-axis direction is smaller than the matching clearance between the two precision matching guide parts and the corresponding slide grooves along the Y-axis direction, which is more conducive to improving the matching accuracy between the moving contact part and the accommodating part in the Y-axis direction. At the same time, it is also conducive to assembling the moving contact part to the accommodating part along the Y-axis direction so that each guide part and the slide groove establish a sliding matching relationship, so that the non-precision matching guide part can be inserted into the slide groove along the Y-axis direction before the precision matching guide part for pre-guiding, and then the precision matching guide part can be inserted into the slide groove along the Y-axis direction, making assembly easier.

[0080] The thirtieth technical solution is compared with the swing-type magnetic latching relay in the prior art. On the basis of retaining the coil assembly of the swing-type magnetic latching relay, the two armatures fixed to the permanent magnet in the armature assembly are improved from parallel arrangement to cross each other, so that the armature assembly can be converted from swinging relative to the coil assembly to linear motion relative to the coil assembly. Since the armature assembly moves linearly relative to the coil assembly, there is no loss of the radial component of the swing stroke of the swing-type magnetic latching relay. Therefore, the space utilization rate of the relay can be higher, and more favorable conditions can be created for increasing the safe distance between the moving contact group and the static contact group in a limited space.

[0081] Compared with the direct-acting magnetic holding relay in the prior art, the thirtieth technical solution has two magnetic drive ends arranged along the Z-axis direction, and the linear movement direction of the armature assembly is the X-axis direction perpendicular to the Z-axis direction. Such a layout is conducive to making room for the movement of the armature assembly and the moving contact group along the Z-axis. Moreover, at this time, the size of the accommodation member along the Z-axis direction is mainly determined by the length of the coil assembly along the Z-axis direction. Therefore, the thirtieth technical solution will not require a long length for the relay in one direction (whether in the X-axis direction or the Z-axis direction), which can make the relay more easily adapt to limited space and create more favorable conditions for increasing the safety distance between the moving contact group and the static contact group in a limited space.

[0082] Compared with the direct-acting magnetic latching relay in the prior art, the 30th technical solution does not need to be inserted with a push rod and a moving iron core in its coil winding, so the support shaft diameter of the coil frame is smaller and the inner diameter of the coil winding is smaller. Therefore, compared with the direct-acting magnetic latching relay in the prior art, the 30th technical solution has a stronger magnetic driving force generated by the coil winding when the space occupied by the coil assembly is the same, and the driving force on the armature assembly is greater, which can create more favorable conditions for increasing the safety distance between the moving contact group and the static contact group in a limited space.

[0083] In the thirty-first technical solution, the pusher and the armature assembly insert are integrally formed by injection molding, which avoids errors that may occur during the assembly process of the armature assembly and the pusher, and also makes the pusher and the armature assembly more integrated, with fewer parts, which is conducive to making full use of limited space.

[0084] In the thirty-second technical solution, since the two armatures in the armature assembly are improved to cross each other on the basis of the coil assembly of the swing-type magnetic latching relay, the first part of the magnetic circuit without any air gap can be formed between the two suction parts of the armature assembly through the permanent magnet and the two armatures, and the second part of the magnetic circuit running through the entire coil assembly can also be formed between the two magnetic drive ends of the coil assembly. In the magnetic holding state, the suction part attracts the corresponding magnetic drive end along the X-axis direction, so that the first part and the second part can form a complete magnetic circuit without an air gap, so the magnetic loss is small and the magnetic efficiency is higher. Without increasing the power consumption of the coil assembly, it is beneficial to increase the movement stroke of the moving contact group; and when the magnetic driving force is equivalent, it can reduce the power consumption required for the coil assembly to achieve magnetic drive, which is beneficial to make the size of the coil assembly smaller. Therefore, it can create more favorable conditions for increasing the safe distance between the moving contact group and the static contact group in a limited space.

[0085] The direct-acting magnetic latching relay in the prior art often forms two magnetic circuits that resist each other in the magnetic latching state, one of which passes through the yoke iron plate and the other passes through the static iron core. The magnetic forces of the two magnetic circuits on the moving iron core are in opposite directions. The second part of the magnetic circuit in the thirty-second technical scheme passes through the entire coil assembly, and the above problem does not exist. Therefore, compared with the direct-acting magnetic latching relay in the prior art, the magnetic force during magnetic latching is greater, especially when the relay is impacted by a large fault current, the armature assembly is less likely to break away from the magnetic latching state and move, which is beneficial to avoid the moving contact group from breaking away from the static contact group due to the large fault current, resulting in destructive arcing.

[0086] In the thirty-third technical solution, when the armature assembly is in a magnetic holding state at the first position, when the coil assembly is stimulated by a pulse electric signal to reverse the polarity temporarily formed by the two magnetic drive ends, not only do the two magnetic drive ends generate magnetic repulsion on the first suction part and the third suction part, but also the first part of the pushing magnetic circuit without an air gap is formed between the fourth suction part and the second suction part through the armature assembly, and the two magnetic drive ends form the second part of the pushing magnetic circuit that runs through the entire coil assembly through the coil assembly. The first part and the second part of the pushing magnetic circuit constitute a complete pushing magnetic circuit, in which there is only a necessary stroke air gap, and no other air gaps, so the magnetic efficiency is higher, and the two magnetic drive ends exert a stronger magnetic drive force on the armature assembly under the same power consumption, which is more conducive to increasing the safety distance between the moving contact group and the static contact group. Similarly, when the armature assembly is in a magnetic holding state at the second position, when the coil assembly is stimulated by a pulse electric signal to reverse the polarity temporarily formed by the two magnetic drive ends, it also has the same technical effect.

[0087] The electric meter in the thirty-fourth technical solution has the technical effect corresponding to the technical solution it quotes. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0089] Figure 1 Schematic diagram of the internal structure of the relay in Example 1;

[0090] Figure 2 is a three-dimensional diagram of the relay in the first embodiment;

[0091] Figure 3 It is a front view of the housing in the first embodiment;

[0092] Figure 4 is a three-dimensional diagram of the cover body in the first embodiment;

[0093] Figure 5 is a three-dimensional diagram of the static contact assembly in the first embodiment;

[0094] Figure 6 It is a three-dimensional diagram of the static conductive magnet in the first embodiment;

[0095] Figure 7 It is a front view of the static conductive magnet in the first embodiment;

[0096] Figure 8 It is a bottom view of the magnetic circuit part in the first embodiment;

[0097] Fig. 9 It is a front view of the magnetic circuit part in the first embodiment;

[0098] Fig.10It is a front view of the armature assembly in the first embodiment;

[0099] Fig.11 It is a left side view of the armature assembly in the first embodiment;

[0100] Fig.12 is a three-dimensional diagram of the shielding cover in the first embodiment;

[0101] Fig.13 It is a schematic diagram of the state of the magnetic circuit part when the middle armature assembly in the first embodiment is in the magnetic holding state at the first position;

[0102] Fig.14 It is a schematic diagram of the state of the magnetic circuit part when the coil winding receives the first pulse electrical signal in the first embodiment;

[0103] Fig.15 It is a schematic diagram of the state of the magnetic circuit part when the armature assembly moves to the second position in the first embodiment;

[0104] Fig.16 It is a schematic diagram of the state of the magnetic circuit part when the armature assembly is in the magnetic holding state at the second position in the first embodiment;

[0105] Fig.17 It is a schematic diagram of the state of the magnetic circuit part when the coil winding receives the second pulse electrical signal in the first embodiment;

[0106] Fig.18 It is a schematic diagram of the state of the magnetic circuit part when the armature assembly moves to the first position in the first embodiment;

[0107] Fig.19 It is a front view of the moving contact part in the first embodiment;

[0108] Fig. 20 It is a bottom view of the pushing member and the connecting member in the first embodiment;

[0109] Fig.21 It is a three-dimensional exploded view of some components in Example 1;

[0110] Fig. 22 is a three-dimensional diagram of the limiting member in the first embodiment;

[0111] Fig.23 is a schematic diagram of the internal structure of the relay in the first embodiment when it is in the off state;

[0112] Fig.24 It is a schematic diagram of the internal structure of the relay in the first embodiment when it is in the on state;

[0113] Fig.25 It is a front view of the relay in the first embodiment;

[0114] Fig.26 for Fig.25AA section view;

[0115] Fig. 27 for Fig.25 BB section view;

[0116] Fig.28 Schematic diagram of the internal structure of the relay in the second embodiment;

[0117] Fig.29 Schematic diagram of the internal structure of the relay in Embodiment 3;

[0118] Fig.30 Schematic diagram of the internal structure of the relay in the fourth embodiment;

[0119] Fig.31 Schematic diagram of the internal structure of the relay in Embodiment 5;

[0120] Fig.32 Schematic diagram of the internal structure of the relay in Embodiment 6;

[0121] Fig.33 Schematic diagram of the internal structure of the relay in Embodiment 7;

[0122] Fig.34 Schematic diagram of the internal structure of the relay in Embodiment 8;

[0123] Fig.35 Schematic diagram of the internal structure of the relay in Embodiment 9;

[0124] Fig.36 Schematic diagram of the internal structure of the relay in the tenth embodiment;

[0125] Fig.37 Schematic diagram of the internal structure of the relay in the eleventh embodiment;

[0126] Fig.38 Schematic diagram of the internal structure of the relay in the twelfth embodiment;

[0127] Fig.39 Schematic diagram of the internal structure of the relay in the thirteenth embodiment;

[0128] Fig.40 Schematic diagram of the internal structure of the relay in Example 14.

[0129] Description of main reference numerals:

[0130] 1. Relay; 2. Fixed part; 3. Magnetic circuit part; 4. Moving contact part; 5. Micro switch; 6. Accommodating part; 7. Static contact group; 8. Static magnet; 9. Barrier; 10. Shell; 11. Cover; 12. Receptacle; 13. Slide; 14. Left slide; 15. Right slide; 13a. Protrusion; 13b. Concave part; 16. Static magnet groove; 17. Barrier groove; 18. Abutment surface; 19. Static contact; 20. Static contact point; 21. Connecting terminal; 22. First static contact; 23. Second static contact; 24. First flow part; 25. First static contact; 26. Second flow part; 27. Third flow part; 28. Fourth flow part; 29. ​​Fifth flow part; 30. Sixth flow part ; 27a, measuring terminal; 31, first connecting terminal; 32, seventh current flow part; 33, second static contact; 34, eighth current flow part; 35, ninth current flow part; 36, second connecting terminal; 37, coil assembly; 38, armature assembly; 39, shielding cover; 40, coil frame; 41, coil winding; 42, signal input terminal; 43, iron core; 44, yoke; 45, magnetic drive end; 46, first yoke; 47, second yoke; 48, first magnetic drive end; 49, second magnetic drive end; 50, permanent magnet; 51, armature; 52, first permanent magnet; 53, second permanent magnet; 54, magnetic pole; 55, first magnetic pole; 56, second magnetic pole; 57, first armature; 58, second armature ; 59, the part that crosses each other; 60, the suction part; 61, the first suction part; 62, the second suction part; 63, the third suction part; 64, the fourth suction part; 65, the first shielding member; 66, the second shielding member; 67, the shielding wall; 68, the connecting wall; 69, the groove; 70, the pushing member; 71, the connecting member; 72, the moving contact member group; 73, the moving magnet group; 74, the elastic bracket group; 75, the elastic member; 76, the limit member; 77, the pushing body; 78, the far guide part; 79, the accommodating part; 80, the first insert part; 81, the second insert part; 82, the connecting column; 83, the moving spring; 84, the connecting end; 85, the moving contact member; 86, the overcurrent bridge; 87, the moving contact point; 88, the first moving contact; 8 9. second moving contact; 90. moving magnetizer; 91. magnetizer body; 92. extension part; 93. elastic bracket; 94. frame; 95. first elastic part; 96. first connecting hole; 97. first elastic arm; 98. main body; 99. second elastic part; 100. second connecting hole; 101. second elastic arm; 102. limiting body; 103. near guide part; 104. limiting part; 105. connecting part; 106. avoidance hole; 107. assembly hole; 109. guide part; 110. static contact terminal; F1. first magnetic force; M1. anti-short circuit magnetic circuit; M2. reverse current magnetic field; S1. first surface; S2. second surface; W. interval; X1. closing direction; X2. opening direction. DETAILED DESCRIPTION

[0131] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and it is not required that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Z-axis direction and the Y-axis direction. Among them, the X-axis direction can be divided into left and right, and the X-axis direction can also be divided into a closing direction and an opening direction. The closing direction refers to the direction of movement of the moving contact group when it moves to a closed state with the static contact group, that is, from right to left; the opening direction refers to the direction of movement of the moving contact group when it moves to a disconnected state with the static contact group, that is, from left to right. The Y-axis direction can be divided into front and back; the Z-axis direction can be divided into top and bottom.

[0132] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0133] In the claims and the specification, unless otherwise defined, the terms "fixed connection" or "fixed connection" or "relatively fixed" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0134] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0135] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0136] In the claims and the specification, unless otherwise defined, the term “arranged along a direction” means that two or more features are distributed along the direction and are at the same position in two other directions perpendicular to the direction.

[0137] In the claims and the specification, unless otherwise specified, the term "group" means a collection, and unless otherwise specified, it may include one element or multiple elements. For example, a "movable contact group" may include one movable contact or more than two movable contacts.

[0138] In the claims and the specification, unless otherwise defined, the term "temporarily formed" means that the polarity of the magnetic driving end formed by the pulse electric signal disappears as the pulse electric signal disappears.

[0139] In the claims and the specification, unless otherwise specified, the term "reversal" means that when the current direction of the pulse electrical signal received by the coil winding this time is different from the current direction of the pulse electrical signal received last time, the polarity of the magnetic drive end temporarily formed this time is opposite to the polarity of the magnetic drive end temporarily formed last time. Of course, those skilled in the art should understand that for a magnetic latching relay, if the current direction of the pulse electrical signal received by the coil assembly this time is the same as the current direction of the pulse electrical signal received last time, the pulse electrical signal received this time has no control significance, and the state of the relay will not change.

[0140] In the claims and the specification, unless otherwise defined, the term "back side" refers to the side facing away from the stationary contact assembly.

[0141] In the claims and the specification, unless otherwise defined, the term "mounted" means connected directly or indirectly to each other.

[0142] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0143] Embodiment 1

[0144] Relay 1 is used to receive an electrical signal to control the on and off of an external circuit. Specifically, the relay 1 in this embodiment is a magnetic latching relay, which is used to receive a pulse electrical signal to control the on and off of an external circuit. In this embodiment, the pulse electrical signal can be divided into a first pulse electrical signal and a second pulse electrical signal. The first pulse electrical signal is correspondingly used to control the conduction of the external circuit, and the second pulse electrical signal is correspondingly used to control the off of the external circuit. After receiving the first pulse electrical signal, the relay 1 switches from the off state to the on state, and after the first pulse electrical signal disappears, the relay 1 remains in the on state until the second pulse electrical signal is received; after receiving the second pulse electrical signal, the relay 1 switches from the on state to the off state, and after the second pulse electrical signal disappears, the relay 1 remains in the off state until the first pulse electrical signal is received. In this embodiment, the external circuit is a single-phase AC circuit. Relay 1 needs to control the on and off of the single-phase AC circuit. In other embodiments, the relay 1 can also be constructed as a multi-phase and used to control the on and off of a multi-phase AC circuit.

[0145] See also Figure 1 , Figure 1 Schematic diagram showing the structure of the relay 1 in this embodiment. Figure 1As shown, the relay 1 includes a fixed part 2, a magnetic circuit part 3, a moving contact part 4 and a micro switch 5. The parts of the fixed part 2 are fixed relative to each other and can serve as a movement reference for the moving contact part 4. The magnetic circuit part 3 is used to receive a pulse electrical signal and drive the moving contact part 4 to move based on the pulse electrical signal. The moving contact part 4 is driven by the magnetic circuit part 3 to move relative to the fixed part 2 along the X-axis direction to control the on and off of the external circuit. The micro switch 5 is used to send a relay state signal to an external relay state sensing circuit.

[0146] like Figure 1 As shown, the fixed part 2 includes a receiving part 6 , a static contact member group 7 , a static conductive magnet 8 and a blocking member 9 .

[0147] See also Figure 2 , Figure 2 FIG. 6 shows the receiving member 6 in this embodiment. Figure 2 As shown, the accommodating component 6 is made of plastic, and includes a shell 10 and a cover 11 .

[0148] See also Figure 3 and Fig. 27 , Figure 3 and Fig. 27 The housing 10 in this embodiment is shown. Figure 3 As shown, the shell 10 is provided with a cavity 12, which opens forward along the Y-axis direction and is used to accommodate the static contact group 7, the static conductive magnet 8, the barrier 9, the magnetic circuit part 3, the moving contact part 4 and the micro switch 5. A slide groove 13 is provided in the middle of the rear wall of the shell 10 along the Z-axis direction. The slide groove 13 extends along the X-axis direction and is divided into a left slide groove 14 and a right slide groove 15. The left slide groove 14 is located on the left side of the right slide groove 15. In this embodiment, the left slide groove 14 and the right slide groove 15 of the shell 10 are separated from each other along the X-axis direction. In other embodiments, the left slide groove 14 and the right slide groove 15 of the shell 10 can be arranged to be connected to each other along the X-axis direction. As shown in FIG. Figure 3 and Fig. 27 As shown, in this embodiment, the slide groove 13 of the housing 10 is a first slide groove, and a protrusion 13a is provided at the bottom of the first slide groove, which protrudes from the bottom of the groove along the Y-axis direction and extends along the X-axis direction. A recess 13b is provided between the protrusion 13a of the first slide groove and the side groove walls on both sides. In this embodiment, the left slide groove 14 and the right slide groove 15 on the housing 10 are both first slide grooves. A static magnet groove 16 is provided on the left side of the left slide groove 14. Blocking member grooves 17 are respectively provided above and below the left slide groove 14 along the Z-axis direction. Abutment surfaces 18 are respectively provided on the right sides of the two barrier member grooves 17, and the abutment surfaces 18 are arranged to the left.

[0149] See also Figure 4 and Fig. 27 , Figure 4 and Fig. 27 FIG. 1 shows the cover body 11 in this embodiment. Figure 4As shown, the cover body 11 is fixedly connected to the shell 10 and is used to shield the cavity 12. The cover body 11 is also provided with a slide groove 13, which extends along the X-axis direction and is divided into a left slide groove 14 and a right slide groove 15. The left slide groove 14 of the cover body 11 is corresponding to the left slide groove 14 of the shell 10 along the Y-axis direction, and the openings of the two are facing each other along the Y-axis direction. The right slide groove 15 of the cover body 11 is corresponding to the right slide groove 15 of the shell 10 along the Y-axis direction, and the openings of the two are the same as each other in the Y-axis direction. In this embodiment, the left slide groove 14 and the rear slide mechanism 15 of the cover body 11 are separated from each other along the X-axis direction. In other embodiments, the left slide groove 14 and the right slide groove 15 of the cover body 11 can be arranged to be connected to each other along the X-axis direction. As shown in FIG. Figure 4 and Fig. 27 As shown, in this embodiment, the slide groove 13 on the cover body 11 is a first slide groove, and a protrusion 13a is provided at the bottom of the first slide groove, which protrudes from the bottom of the groove along the Y-axis direction and extends along the X-axis direction. A recess 13b is provided between the protrusion 13a of the first slide groove and the side groove walls on both sides. In this embodiment, the left slide groove 14 and the right slide groove 15 on the cover body 11 are both first slide grooves.

[0150] See also Figure 5 , Fig.23 and Fig.26 , Figure 5 , Fig.23 and Fig.26 The static contact group 7 in this embodiment is shown. The static contact group 7 is used to electrically connect to an external circuit. The static contact group 7 includes two static contacts 19. Each static contact 19 is provided with a static contact 20 and a connecting terminal 21. The connecting terminal 21 is used to connect to an external circuit. One of the two connecting terminals 21 is used to connect a power source, and the other is used to connect a load. When the two static contacts 19 are turned on, the power source and the load are turned on; when the two static contacts 19 are turned off, the power source and the load are turned off. Specifically, in this embodiment, the two static contacts 19 are respectively a first static contact 22 and a second static contact 23. The first static contact 22 is provided with a first flow portion 24, a first static contact 25, a second flow portion 26, a third flow portion 27, a fourth flow portion 28, a fifth flow portion 29 and a sixth flow portion 30. The first flow portion 24 is perpendicular to the X-axis direction and extends along the Z-axis direction. The first flow portion 24 is provided with a first surface S1 facing right along the X-axis direction. The first static contact 25 is the static contact 20 of the first static contact 22. There are two first static contacts 25, and the two first static contacts 25 are arranged along the Y-axis direction. The two first static contacts 25 extend rightward along the X-axis direction from the first surface S1 of the first flow portion 24. The second flow portion 26 extends leftward along the X-axis direction from the lower end of the first flow portion 24 along the Z-axis direction. The third flow portion 27 extends downward along the Z-axis direction from the left end of the second flow portion 26 along the X-axis direction. Fig.23 As shown, the third flow portion 27 passes through the accommodating member 6 downward along the Z-axis direction. Figure 5As shown, the rear portion of the third current-carrying portion 27 along the Y-axis direction is provided with a measuring terminal 27a extending backward along the Y-axis direction, as shown in FIG. Fig.26 As shown, the measuring terminal 27a extends downwardly from the accommodation member 6 along the Y-axis direction. Figure 5 As shown, the fourth flow portion 28 extends to the right along the X-axis direction from the lower end of the third flow portion 27 along the Z-axis direction. The fifth flow portion 29 extends downward along the Z-axis direction from the right end of the fourth flow portion along the X-axis. The sixth flow portion 30 extends to the right along the X-axis direction from the lower end of the fifth flow portion 29 along the Z-axis direction and the rear end along the Y-axis direction. In this embodiment, the portion of the third flow portion 27 extending out of the accommodating member 6, the fourth flow portion 28, the fifth flow portion 29 and the sixth flow portion 30 constitute a first connecting terminal 31. The first connecting terminal 31 is the connecting terminal 21 of the first static contact 22. The second static contact 23 is provided with a seventh flow portion 32, a second static contact 33, an eighth flow portion 34 and a ninth flow portion 35. The seventh flow portion 32 is provided with a first surface S1 facing right along the X-axis direction. The first surface S1 of the seventh flow portion 32 and the first surface S1 of the first flow portion 24 are located on the same plane perpendicular to the X-axis. The second static contact 33 is the static contact 20 of the second static contact 23. There are two second static contacts 33, and the two second static contacts 33 are arranged along the Y-axis direction. The two second static contacts 33 extend to the right from the first surface S1 of the seventh flow portion 32 along the X-axis direction. The eighth flow portion 34 extends to the right from the lower end of the seventh flow portion 32 along the Z-axis direction along the X-axis direction. The ninth flow portion 35 extends downward from the right end of the eighth flow portion along the X-axis direction and the rear end along the Y-axis direction along the Z-axis direction. Fig.23 As shown, the ninth current-passing portion 35 extends downwardly from the accommodating member 6 along the Z-axis direction. In this embodiment, the ninth current-passing portion 35 constitutes a second connecting terminal 36. The second connecting terminal 36 is the connecting terminal 21 of the second static contact 23. The second connecting terminal 36 can be used to install a mutual inductor. In this embodiment, the two connecting terminals 21 are arranged along the X-axis direction and both extend out of the accommodating member 6 along the Z-axis direction.

[0151] See also Figure 6 and Figure 7 , Figure 6 and Figure 7 FIG. 8 shows the static conductive magnet 8 in this embodiment. Figure 5 As shown, the static conductive magnet 8 extends along the Y-axis direction. Figure 6 As shown in FIG. 1 , the surface of the static conductive magnet 8 facing leftward along the X-axis direction forms a second surface S2 . The second surface S2 is perpendicular to the X-axis direction.

[0152] See also Figure 1 , Figure 1The barrier 9 in this embodiment is shown. In this embodiment, the number of the barrier 9 is two. Each barrier 9 is in the shape of a sheet and extends along the X-axis direction, and has a size along the Y-axis direction. Therefore, the two barrier 9 are perpendicular to the Z-axis direction. The barrier 9 is made of high temperature resistant insulating material. In this embodiment, ceramic material is used.

[0153] See also Figure 8 , Figure 8 FIG. 3 shows the magnetic circuit portion 3 in this embodiment. Figure 8 As shown, the magnetic circuit portion 3 includes a coil assembly 37 , an armature assembly 38 and a shielding cover 39 .

[0154] See also Figure 8 and Fig. 9 , Figure 8 and Fig. 9 The coil assembly 37 in this embodiment is shown. Figure 8 and Fig. 9As shown, the coil assembly 37 includes a coil frame 40, a coil winding 41, a signal input terminal 42, an iron core 43 and a yoke 44. The coil frame 40 is fixedly connected to the housing 10. The coil frame 40 extends along the Z-axis direction and is provided with a central hole extending along the Z-axis direction. The coil frame 40 is provided with retaining walls at both ends along the Z-axis direction. The coil winding 41 is wound on the coil frame 40 and is located between the two retaining walls. The axis of the coil winding 41 extends along the Z-axis direction. The two terminals of the coil winding 41 are connected to three signal input terminals 42, and the signal input terminals 42 are used to receive pulse electrical signals. The iron core 43 is placed in the central hole of the coil frame 40 and extends along the Z-axis direction. The number of yokes 44 is two. The two yokes 44 are respectively fixedly connected to the two ends of the iron core 43 along the Z-axis direction, and the ends of the two yokes 44 away from the iron core 43 form magnetic drive ends 45 respectively. The two magnetic drive ends 45 are arranged along the Z-axis direction and extend close to each other along the Z-axis direction. The two yokes 44 are respectively a first yoke 46 and a second yoke 47. The two magnetic drive ends 45 are respectively a first magnetic drive end 48 and a second magnetic drive end 49. The first magnetic drive end 48 is formed on the first yoke 46, and the second magnetic drive end 49 is formed on the second yoke 47. The coil winding 41 is stimulated by a pulse electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends 45 to switch different parts of the two armatures 51 of the armature assembly 38 and drive the armature assembly 38 to move along the X-axis direction. In this embodiment, for the convenience of introduction, it is assumed that when the signal input terminal 42 receives the first pulse electrical signal, the coil winding 41 generates a first magnetic field, and makes the first magnetic drive end 48 temporarily have an N-pole polarity, and makes the second magnetic drive end 49 temporarily have an S-pole polarity. After the first pulse electrical signal disappears, the first magnetic field of the coil winding 41 disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated based on the first magnetic field; when the signal input terminal 42 receives a second pulse electrical signal whose current direction is opposite to that of the first pulse electrical signal, the coil winding 41 generates a second magnetic field, which reverses the polarity of the first magnetic drive end 48 and has an S-pole polarity, and reverses the polarity of the second magnetic drive end 49 and has an N-pole polarity. After the second pulse electrical signal disappears, the second magnetic field of the coil winding 41 disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated based on the second magnetic field. "Temporarily formed" in this embodiment means that the polarity of the magnetic drive end 45 formed by the pulse electrical signal disappears with the disappearance of the pulse electrical signal. "Reversal" in this embodiment means that when the current direction of the pulse electrical signal received by the coil winding 41 this time is different from that of the pulse electrical signal received last time, the polarity of the magnetic drive end 45 temporarily formed this time is opposite to the polarity of the magnetic drive end 45 temporarily formed last time.

[0155] See also Fig.10 and Fig.11 , Fig.10 and Fig.11The armature assembly 38 in this embodiment is shown. The armature assembly 38 is driven by the coil assembly 37 to move between the first position and the second position along the X-axis direction. When the armature assembly 38 moves to the first position, the relay 1 is in the off state and the external circuit is turned off. When the armature assembly 38 moves to the second position, the relay 1 is in the on state and the external circuit is turned on. The first position is further to the right than the second position along the X-axis direction. Fig.10 and Fig.11As shown, in this embodiment, the armature assembly 38 includes two permanent magnets 50 and two armatures 51. The two permanent magnets 50 are formed by magnetized magnetic steel. In other embodiments, the two permanent magnets 50 can also be made of other permanent magnetic materials, such as neodymium iron boron permanent magnets. In this embodiment, the two permanent magnets 50 are respectively a first permanent magnet 52 and a second permanent magnet 53. Each permanent magnet 50 is provided with two magnetic poles 54 with fixed polarity, and the two magnetic poles 54 are respectively a first magnetic pole 55 and a second magnetic pole 56. The first magnetic pole 55 and the second magnetic pole 56 have opposite polarities. For the convenience of introduction, it is assumed that the polarity of the first magnetic pole 55 is an N pole and the polarity of the second magnetic pole 56 is an S pole. In this embodiment, the two magnetic poles 54 of each permanent magnet 50 are arranged along the X-axis direction. In this embodiment, the two permanent magnets 50 are arranged along the Z-axis direction. Among them, the first permanent magnet 52 is at the top along the Z-axis direction, and the second permanent magnet 53 is at the bottom along the Z-axis direction. The first magnetic pole 55 of the first permanent magnet 52 is on the left along the X-axis direction, and the second magnetic pole 56 is on the right along the X-axis direction. The first magnetic pole 55 of the second permanent magnet 53 is on the right along the X-axis direction, and the second magnetic pole 56 is on the left along the X-axis direction. The two armatures 51 are respectively a first armature 57 and a second armature 58. The first armature 57 is fixedly connected to the first magnetic poles 55 of the two permanent magnets 50. The second armature 58 is fixedly connected to the second magnetic poles 56 of the two permanent magnets 50. The projections of the two armatures 51 on the first projection plane perpendicular to the Y-axis direction intersect with each other. The parts 59 where the two armatures 51 intersect with each other form a gap W along the Y-axis direction. Each armature 51 is provided with two suction parts 60 on both sides along the Z-axis direction. Among them, the first armature 57 is provided with a first suction part 61 and a second suction part 62 on both sides along the Z-axis direction, the first suction part 61 is on the top along the Z-axis direction and on the left along the X-axis direction; the second suction part 62 is on the bottom along the Z-axis direction and on the right along the X-axis direction. The second armature 58 is provided with a third suction part 63 and a fourth suction part 64 on both sides along the Z-axis direction, respectively. The third suction part 63 is at the bottom along the Z-axis direction and at the left along the X-axis direction; the fourth suction part 64 is at the top along the Z-axis direction and at the right along the X-axis direction. Therefore, in this embodiment, the first suction part 61 and the third suction part 63 are arranged along the Z-axis direction, the fourth suction part 64 and the second suction part 62 are arranged along the Z-axis direction, the first suction part 61 and the fourth suction part 64 are arranged along the X-axis direction, and the third suction part 63 and the second suction part 62 are arranged along the X-axis direction. In this embodiment, the projection of the armature assembly 38 on the first projection plane perpendicular to the Y-axis direction is mirror-symmetrical relative to the symmetry plane perpendicular to the Z-axis direction.

[0156] See also Figure 8 and Fig.12 , Figure 8 and Fig.12 FIG. 3 shows a shielding cover 39 in this embodiment. Fig.12As shown, the shielding cover 39 includes a first shielding member 65 and a second shielding member 66. The first shielding member 65 and the second shielding member 66 are plugged together to form the shielding cover 39. The shielding cover 39 is provided with two shielding walls 67 and a connecting wall 68. Each shielding wall 67 is provided with a groove 69 at the left end along the X-axis direction. The groove 69 extends along the X-axis direction and is located in the middle of the shielding wall 67 along the Z-axis direction. Figure 8 As shown, the two shielding walls 67 are arranged perpendicular to the Z-axis direction. The two shielding walls 67 are arranged in front and behind the coil assembly 37 along the Y-axis direction. The connecting wall 68 is perpendicular to the X-axis direction and is used to connect the two shielding walls 67. The connecting wall 68 is arranged on the right side of the coil assembly 37 along the X-axis direction.

[0157] See also Figures 13 to 18 , Figures 13 to 18 The operating principle of the magnetic circuit portion 3 in this embodiment is shown.

[0158] like Fig.13 As shown, in this embodiment, the armature assembly 38 is located between the arms of the two yokes 44 extending along the Z axis along the Z axis. The first magnetic drive end 48 is located between the first suction part 61 and the fourth suction part 64 along the X axis; the second magnetic drive end 49 is located between the third suction part 63 and the second suction part 62 along the X axis.

[0159] Fig.13 FIG. 2 shows the state of the magnetic circuit portion 3 when the armature assembly 38 in this embodiment is in the magnetic holding state at the first position. Fig.13As shown, when the armature assembly 38 is in the magnetic holding state at the first position, the first suction portion 61 suctions the first magnetic drive end 48, and the third suction portion 63 suctions the second magnetic drive end 49. At this time, the magnetic circuit portion 3 forms two closed magnetic circuits, namely the first closed magnetic circuit and the second closed magnetic circuit. The first closed magnetic circuit runs from the first magnetic pole 55 of the first permanent magnet 52, through the first suction portion 61, the first magnetic drive end 48, the first yoke 46, the iron core 43, the second yoke 47, the second magnetic drive end 49, the third suction portion 63, the part 59 that the second armature 58 crosses each other, and the second magnetic pole 56 of the first permanent magnet 52, back to the first magnetic pole 55 of the first permanent magnet 52, without any air gap in between, and passes through the entire coil assembly 37. The second closed magnetic circuit runs from the first magnetic pole 55 of the second permanent magnet 53, through the intersecting portion 59 of the first armature 57, the first suction portion 61, the first magnetic drive end 48, the first yoke 46, the iron core 43, the second yoke 47, the second magnetic drive end 49, the third suction portion 63, the second magnetic pole 56 of the second permanent magnet 53, and back to the first magnetic pole 55 of the second permanent magnet 53, without any air gap in between, and passes through the entire coil assembly 37. Therefore, when the armature assembly 38 is in the magnetic holding state at the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction force is generated between the first suction portion 61 and the first magnetic drive end 48 and between the third suction portion 63 and the second magnetic drive end 49, and the armature assembly 38 is maintained at the first position relative to the coil assembly 37.

[0160] Fig.14 FIG. 3 shows the state of the magnetic circuit portion 3 when the coil assembly 37 in this embodiment just receives the first pulse electrical signal. Fig.14As shown, at this time, the coil winding 41 is excited by the first pulse electrical signal to generate a first magnetic field, so that the first magnetic drive end 48 temporarily has an N-pole polarity, and the second magnetic drive end 49 temporarily has an S-pole polarity. Since the first magnetic drive end 48 and the first suction part 61 have the same polarity, both are N-pole, the first magnetic drive end 48 generates a magnetic repulsion force on the first suction part 61; since the second magnetic drive end 49 and the third suction part 63 have the same polarity, both are S-pole, the second magnetic drive end 49 generates a magnetic repulsion force on the third suction part 63. In addition, the magnetic circuit part 3 also forms two push magnetic circuits at this time, namely the first push magnetic circuit and the second push magnetic circuit. The first push magnetic circuit returns from the first magnetic drive end 48 through the travel air gap, the fourth suction part 64, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the cross-section 59 of the first armature 57, the second suction part 62, the travel air gap, the second magnetic drive end 49, the second yoke 47, the core 43, the first yoke 46, and then returns to the first magnetic drive end 48, with only two travel air gaps in between, and passes through the entire coil assembly 37. The second push magnetic circuit returns from the first magnetic drive end 48 through the travel air gap, the fourth suction part 64, the cross-section 59 of the second armature 58, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the second suction part 62, the travel air gap, the second magnetic drive end 49, the second yoke 47, the core 43, the first yoke 46, and then returns to the first magnetic drive end 48, with only two travel air gaps in between, and passes through the entire coil assembly 37. Therefore, when the coil assembly 37 just receives the first pulse electrical signal, not only does the first magnetic drive end 48 exert a magnetic repulsion force on the first suction part 61, and the second magnetic drive end 49 exerts a magnetic repulsion force on the third suction part 63, but also due to the existence of the first pushing magnetic circuit and the second pushing magnetic circuit, and the superposition effect between the two, the first magnetic drive end 48 generates a magnetic attraction force on the fourth suction part 64, and the second magnetic drive end 49 generates a magnetic attraction force on the second suction part 62, so that the coil assembly 37 can form a stronger driving force on the armature assembly 38, pushing the armature assembly 38 to move from the first position along the closing direction X1 to the second position.

[0161] Fig.15 FIG. 2 shows the state of the magnetic circuit portion 3 when the armature assembly 38 is driven by the coil assembly 37 to move to the second position along the closing direction X1 in this embodiment. Fig.15As shown, when the armature assembly 38 just moves to the second position, the first pulse electric signal and the first magnetic field have not disappeared, the first magnetic drive end 48 still temporarily has the N-pole polarity, and the second magnetic drive end 49 still temporarily has the S-pole polarity. At this time, the magnetic circuit part 3 forms two closed magnetic loops, namely the third closed magnetic loop and the fourth closed magnetic loop. The third closed magnetic loop starts from the first magnetic drive end 48, passes through the fourth suction part 64, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the part 59 where the first armature 57 intersects with each other, the second suction part 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, the first yoke 46 and returns to the first magnetic drive end 48, without any air gap in between, and passes through the entire coil assembly 37. The fourth closed magnetic circuit goes from the first magnetic drive end 48, through the fourth suction part 64, the cross-section 59 of the second armature 58, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the second suction part 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, the first yoke 46, and returns to the first magnetic drive end 48 without any air gap in between, and passes through the entire coil assembly 37. Therefore, when the armature assembly 38 just moves to the second position, due to the existence of the third closed magnetic circuit and the fourth closed magnetic circuit and the superposition effect between the two, a greater magnetic attraction is generated between the first magnetic drive end 48 and the fourth suction part 64 and between the second magnetic drive end 49 and the second suction part 62.

[0162] Fig.16 FIG. 2 shows the state of the magnetic circuit portion 3 when the armature assembly 38 in this embodiment is in the magnetic holding state at the second position. Fig.16 As shown in FIG. 1 , when the first pulse electrical signal disappears, the first magnetic field disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated by the first magnetic field. At this time, the third closed magnetic circuit and the fourth closed magnetic circuit still exist, wherein the third closed magnetic circuit can be regarded as starting from the first magnetic pole 55 of the first permanent magnet 52, and its path is the same as Fig.14 The path of the third closed magnetic circuit shown in FIG. 1 is the same as that of the third closed magnetic circuit shown in FIG. 1 ; the fourth closed magnetic circuit can be regarded as starting from the first magnetic pole 55 of the second permanent magnet 53, and its path is the same as that of the third closed magnetic circuit shown in FIG. Fig.14 The path of the fourth closed magnetic circuit shown is the same. The third closed magnetic circuit and the fourth closed magnetic circuit are superimposed on each other, so that a greater magnetic attraction force is generated between the fourth suction portion 64 and the first magnetic drive end 48 and between the second suction portion 62 and the second magnetic drive end 49, and the armature assembly 38 is maintained in the second position relative to the coil assembly 37.

[0163] Fig.17 FIG. 3 shows the state of the magnetic circuit portion 3 when the coil assembly 37 in this embodiment just receives the second pulse electrical signal. Fig.17As shown, at this time, the coil winding 41 is excited by the second pulse electrical signal to generate a second magnetic field, so that the first magnetic drive end 48 temporarily has an S-pole polarity, and the second magnetic drive end 49 temporarily has an N-pole polarity. Since the first magnetic drive end 48 and the fourth suction part 64 have the same polarity, both are S-pole, the first magnetic drive end 48 generates a magnetic repulsion force on the fourth suction part 64; since the second magnetic drive end 49 and the second suction part 62 have the same polarity, both are N-pole, the second magnetic drive end 49 generates a magnetic repulsion force on the second suction part 62. In addition, the magnetic circuit part 3 also forms two push magnetic circuits at this time, namely the third push magnetic circuit and the fourth push magnetic circuit. The third push magnetic circuit returns to the second magnetic drive end 49 from the second magnetic drive end 49 through the travel air gap, the third suction part 63, the part 59 where the second armature 58 intersects with each other, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the first suction part 61, the travel air gap, the first magnetic drive end 48, the first yoke 46, the iron core 43, the second yoke 47, and there are only two travel air gaps in the middle, and it passes through the entire coil assembly 37. The fourth push magnetic circuit returns to the second magnetic drive end 49 from the second magnetic drive end 49 through the travel air gap, the third suction part 63, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the part 59 where the first armature 57 intersects with each other, the first suction part 61, the travel air gap, the first magnetic drive end 48, the first yoke 46, the iron core 43, the second yoke 47, and there are only two travel air gaps in the middle, and it passes through the entire coil assembly 37. Therefore, when the coil assembly 37 just receives the second pulse electrical signal, not only does the first magnetic drive end 48 exert a magnetic repulsion force on the fourth suction part 64, and the second magnetic drive end 49 exerts a magnetic repulsion force on the second suction part 62, but also due to the existence of the third pushing magnetic circuit and the fourth pushing circuit, and the existence of a superposition effect between the two, the first magnetic drive end 48 generates a magnetic attraction force on the first suction part 61, and the second magnetic drive end 49 generates a magnetic attraction force on the third suction part 63, so that the coil assembly 37 can form a stronger driving force on the armature assembly 38, pushing the armature assembly 38 to move from the second position along the disconnection direction X2 to the first position.

[0164] Fig.18 FIG. 2 shows the state of the magnetic circuit portion 3 when the armature assembly 38 is driven by the coil assembly 37 to move to the first position along the disconnection direction X2 in this embodiment. Fig.18 As shown, when the armature assembly 38 just moves to the first position, the second pulse electric signal and the second magnetic field have not disappeared, the first magnetic drive end 48 still has the S pole polarity temporarily, and the second magnetic drive end 49 still has the S pole polarity temporarily. At this time, the magnetic circuit part 3 still exists Fig.12 The first closed magnetic circuit and the second closed magnetic circuit are shown, wherein the first closed magnetic circuit can be regarded as starting from the second magnetic drive end 49, and its path is Fig.12The path of the first closed magnetic circuit shown is the same; the second closed magnetic circuit can be regarded as starting from the second magnetic drive end 49, and its path is the same as Fig.12 Therefore, when the armature assembly 38 just moves to the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction force is generated between the first magnetic drive end 48 and the first suction part 61 and between the second magnetic drive end 49 and the third suction part 63.

[0165] When the second pulse electrical signal disappears, the second magnetic field disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated by the second magnetic field. Fig.12 It is shown in the magnetic holding state in the first position.

[0166] See also Fig.19 , Fig.19 FIG. 4 shows the moving contact part 4 in this embodiment. Fig.19 As shown, the moving contact part 4 includes a pushing member 70 , a connecting member 71 , a moving contact member group 72 , a moving magnet group 73 , an elastic bracket group 74 , an elastic member 75 and a limiting member 76 .

[0167] See also Fig. 20 , Fig. 20 FIG. 7 shows a pusher 70 and a connector 71 in this embodiment. Fig. 20 As shown, in this embodiment, the armature assembly 38, the connecting member 71 and the movable spring 83 are fixedly connected to the push member 70. Specifically, the armature assembly 38, the connecting member 71 and the movable spring 83 are integrally formed with the push member 70 by insert injection molding. The push member 70 is made of plastic. The push member 70 is provided with a push body 77 and two distal guide portions 78. The push body 77 is provided with a receiving portion 79, a first insert portion 80 and a second insert portion 81. The receiving portion 79 is used to receive the armature assembly 38. The first insert portion 80 is used to receive the connecting member 71 and is located on the left side of the receiving portion 77 along the X-axis direction. Two connecting columns 82 are provided on the left surface of the first insert portion 78. The two connecting columns 82 are arranged along the Z-axis direction. Each connecting column 82 extends to the left from the left surface of the first insert portion 80 along the X-axis direction. The second insert portion 81 is used to receive the movable spring 83 and is located on the right side of the receiving portion 79 along the X-axis direction. The movable spring 83 is a part of the micro switch 5, which will be described in detail later. The two distal guide portions 78 extend away from each other along the Z-axis direction from the push body 77. In this embodiment, the two distal guide portions 78 extend away from each other along the Y-axis direction from the front surface and the rear surface of the accommodating portion 79 along the Y-axis direction, respectively, and the distal guide portions 78 are arranged in the middle of the accommodating portion 79 along the Y-axis direction and the middle of the X-axis direction. The distal guide portion 78 is a second guide portion, and the second guide portion forms a third projection on the first projection surface perpendicular to the Y-axis direction, and the third projection is circular.

[0168] like Fig. 20 As shown, the connecting member 71 extends along the Y-axis direction, and its two ends along the Y-axis direction extend out of the first insert portion 80 to form two connecting ends 84 .

[0169] See also Fig.21 , Fig.21 The moving contact assembly 72, the moving magnet assembly 73, the elastic bracket assembly 74, the elastic member 75 and the stopper 76 in this embodiment are shown. The moving contact assembly 72 is driven by the armature assembly 38 and the pusher 70 which is molded integrally with the armature assembly 38 by insert injection molding to close or open with the stationary contact assembly 7 along the X-axis direction, so as to correspondingly conduct or cut off the electrical connection between the two stationary contacts 19. Fig. 20 As shown, the moving contact group 72 includes two moving contacts 85. The two moving contacts 85 are arranged along the Y-axis direction. Each moving contact 85 is provided with a current bridge 86 and two moving contacts 87. The current bridge 86 extends along the Y-axis direction. The two moving contacts 87 are arranged along the Z-axis direction and fixed to the current bridge 86, and each moving contact 87 faces left along the X-axis direction and is arranged opposite to the corresponding static contact 20. Specifically, the moving contact 87 opposite to the first static contact 25 along the X-axis direction is the first moving contact 88; the moving contact 87 opposite to the second static contact 33 along the X-axis direction is the second moving contact 89. When the moving contact group 72 is closed with the static contact group 7, each first moving contact 88 is closed with the corresponding first static contact 25 along the X-axis direction, and each second moving contact 89 is closed with the corresponding second static contact 33 along the X-axis direction, and the first static contact 22 and the second static contact 23 are connected through the two moving contacts 85. When the moving contact group 72 is disconnected from the stationary contact group 7, each first moving contact 88 is disconnected from the corresponding first stationary contact 25 along the X-axis direction, each second moving contact 89 is disconnected from the corresponding second stationary contact 33 along the X-axis direction, and the first stationary contact 22 and the second stationary contact 23 are turned off.

[0170] The moving magnet group 73 is fixed relative to the moving contact group 72 and is arranged relative to the static magnet 8 along the X-axis direction. Fig.21 As shown, the moving magnet group 73 includes a moving magnet 90, and the moving magnet 90 is arranged corresponding to the moving contact 85. In this embodiment, the number of the moving magnets 90 is two, and the two moving magnets 90 are arranged along the Y-axis direction. Each moving magnet 90 is provided with a magnetic body 91 and two extensions 92. The magnetic body 91 extends along the Z-axis direction and is fixed to the back of the overcurrent bridge 86, where the "back" refers to the surface away from the static contact group 7. The extension 92 extends to the left along the X-axis direction from both ends of the magnetic body 91 along the Y-axis direction.

[0171] The elastic support assembly 74 is mounted on the push member 70 and is located between the push member 70 and the movable contact assembly 72 along the X-axis direction. Fig.21As shown, the elastic bracket group 74 includes an elastic bracket 93. In this embodiment, the number of the elastic brackets 93 is two and they are arranged along the Y-axis direction. The elastic bracket 93 is provided with a frame 94 and a first elastic portion 95. The frame 94 is fixed relative to the pusher 70. Specifically, the frame 94 is provided with two first connecting holes 96 corresponding to the connecting column 82. The connecting column 82 passes through the first connecting holes 96 so that the frame 94 is positioned relative to the pusher 70 in any direction perpendicular to the X-axis direction. The first elastic portion 95 is suitable for elastic deformation along the X-axis direction. The first elastic portion 95 is arranged corresponding to the moving contact 85, and the moving contact 85 is fixed to the corresponding first elastic portion 95. In this embodiment, each first elastic portion 95 includes two first elastic arms 97, one end of the first elastic arm 97 is connected to the frame 94 as a whole, and the other end is fixed to the overcurrent bridge 86. The position where the first elastic arm 97 is fixed to the overcurrent bridge 86 is located on the back of the corresponding moving contact 87.

[0172] The elastic member 75 is adapted to abut against the accommodating member 6. The elastic member 75 deforms to store energy when the push member 70 moves along the opening direction X2, and recovers to release energy when the push member 70 moves along the closing direction X1. Fig.21 As shown, the elastic member 75 is provided with a main body 98 and a second elastic portion 99. The main body 98 is in the shape of a sheet perpendicular to the X-axis direction and is fixed relative to the pushing member 70. Specifically, the main body 98 is provided with two second connecting holes 100 corresponding to the connecting column 82, and the connecting column 82 passes through the second connecting holes 100 so that the main body 98 can be positioned relative to the pushing member 70 along any direction perpendicular to the X-axis direction. The main body 98 is located between the frame 94 and the first insert portion 78 along the X-axis direction. The second elastic portion 99 is suitable for elastic deformation along the X-axis direction. The second elastic portion 99 is arranged corresponding to the moving contact 85 in the moving contact member group 72. The second elastic portion 99 includes two second elastic arms 101, one end of the two second elastic arms 101 is respectively connected to the main body 98 as a whole, and the other end extends to both sides of the Z-axis direction and is suitable for abutting the corresponding abutting surface 18.

[0173] See also Fig. 22 , Fig. 22 The limiting member 76 in this embodiment is shown. The limiting member 76 is fixed relative to the pushing member 70, and when the moving contact member group 72 is disconnected from the stationary contact member group 7, it abuts against the moving contact member group 72 backwards to limit the distance between the moving contact member group 72 and the stationary contact member group 7. Fig. 22As shown, the limiting member 76 is provided with a limiting body 102 and two proximal guide portions 103. The limiting body 102 is made of metal. The limiting body 102 is provided with a limiting portion 104 and two connecting portions 105. The limiting portion 104 is suitable for abutting against each moving contact 85 in the moving contact group 72. The limiting portion 104 extends along the Y-axis direction and is provided with three avoidance holes 106, and the avoidance holes 106 are used for allowing the extension portion 92 of each moving magnet 90 to extend to the left along the X-axis direction. The two connecting portions 105 extend backwards from both ends of the limiting portion 104 along the Y-axis direction, respectively, and the connecting portion 105 is provided with an assembly hole 107 that cooperates with and is fixed to the connecting end 84. The two proximal guide portions 103 are arranged along the Y-axis direction and extend away from each other from the corresponding connecting portions 105 along the Y-axis direction. In this embodiment, the material of the near guide portion 103 is metal, and is formed by stamping from the connecting portion 105. Therefore, in this embodiment, the near guide portion 103 is connected to the limiting body 102 as a whole. In other embodiments, the material of the near guide portion 103 can also be plastic, and it is inserted and injection molded or bonded or screwed with the limiting body 102. In this embodiment, the near guide portion 103 is located in the middle of the connecting portion 105 along the X-axis direction, and is located in the middle of the limiting member 76 along the Z-axis direction. In this embodiment, the near guide portion 103 is a first guide portion, and both sides of the first guide portion along the Z-axis direction are provided with a contact portion suitable for contacting the side groove wall of the slide groove 13 along the Z-axis direction. Both sides of the contact portion along the X-axis direction are adjacent to the correction portion, and the correction portion forms a first projection on the first projection surface perpendicular to the Y-axis direction. The outer edge of the first projection is a convex curve and its radius of curvature is greater than half of the size of the first guide portion along the Z-axis direction. In this embodiment, the first guide portion forms a second projection on the first projection surface, and the second projection is an ellipse whose major axis extends along the X-axis direction. In this embodiment, the first guide portion is in the shape of an elliptical cylinder. In other embodiments, the first guide portion may also be in the shape of an ellipsoid. In this embodiment, the near guide portion 103 and the far guide portion 78 are both guide portions 109. The types of guide portions 109 are only the first guide portion and the second guide portion. The guide portion 109 is used to extend into the slide groove 13 along the Y-axis direction and slide with the slide groove 13 along the X-axis direction to guide the movement of the moving contact portion 4 along the X-axis direction.

[0174] See also Figure 1 , Figure 1 FIG. 5 shows a micro switch 5 in this embodiment. Figure 1As shown, in this embodiment, the micro switch 5 includes a dynamic spring 83 and two static contact terminals 110. The static contact terminal 110 extends along the Y-axis direction and extends out of the accommodating member 6. The two static contact terminals 110 are arranged along the Z-axis direction and are located between the dynamic spring 83 and the coil winding 41 along the X-axis direction. The two static contact terminals 110 are used to be electrically connected to the relay state sensing circuit. The dynamic spring 83 is fixedly connected to the push member 70. In this embodiment, the dynamic spring 83 and the push member 70 are insert-molded as a whole and are located in the second insert part 81. The dynamic spring 83 is provided with two abutment arms extending away from each other along the Z-axis direction. The dynamic spring 83 is driven by the push member 70 to move along the X-axis direction so that the abutment arms abut or move away from the two static contact terminals 110. In other embodiments, when the dynamic spring 83 is not fixedly connected to the push member 70, the dynamic spring 83 can also move away from the two static contact terminals based on its own elastic restoring force.

[0175] See also Fig.23 , Fig.26 and Fig. 27 , Fig.23 , Fig.26 and Fig. 27 The internal structure of the relay 1 in this embodiment is shown.

[0176] like Fig.23As shown, in this embodiment, the magnetic circuit part 3 and the moving contact part 4 are installed in the cavity 12. The two static contacts 19 of the static contact group 7 are fixed to the accommodating part 6, so that the static contacts 20 of the two static contacts 19 are arranged along the Z-axis direction, and the connecting terminals 21 of the two static contacts 19 are arranged along the X-axis direction and extend out of the accommodating part 6 along the Z-axis direction. The second connecting terminal 35 of the second static contact 23 is located between each static contact 20 and the coil winding 41 along the X-axis direction. The eighth current flow portion 34 is located on the outside of the moving contact group 72 along the Z-axis direction, and is also located on the outside of the lower barrier 9. The static conductive magnet 8 is inserted into the static conductive magnet slot 16 and fixed to the accommodating part 6. The first static contact 25 and the second static contact 33 are respectively located on both sides of the static conductive magnet 8 along the Z-axis direction. The projections of the parts of all the static contacts 20 suitable for contacting the moving contact group 72 on the second projection plane perpendicular to the Z-axis direction are all located within the projection of the static magnet 8 on the second projection plane, and the surface of the static magnet 8 facing the moving magnet group 73 is closer to the moving magnet group 73 than all the static contacts 20 along the X-axis direction. The second surface S2 is closer to the moving magnet group 73 than the first surface S1. The static magnet 8 and the moving magnet group 73 are arranged opposite to each other along the X-axis direction. The static magnet 8 is located between the third flow-through portion 27 and the moving magnet group 73 along the X-axis direction. In other embodiments, the static magnet 8 can also be fixed relative to the limit member 76, which can play the same role. The two blocking members 9 are respectively inserted into the corresponding blocking member grooves 17 and fixed to the accommodating member 6, so that the two blocking members 9 are located on both sides of the static contact group 7 along the Z-axis direction. The first magnetic drive end 48 is located between the first suction portion 61 and the fourth suction portion 64 along the X-axis direction. The second magnetic drive end 49 is located between the third suction portion 63 and the second suction portion 62 along the X-axis direction. Each first moving contact 88 is arranged opposite to the corresponding first static contact 25 along the X-axis direction, and each second moving contact 89 is arranged opposite to the corresponding second static contact 33 along the X-axis direction. The limit member 76 is fixedly connected to the connecting member 71 to be relatively fixed to the pushing member 70. The limit member 76 is suitable for abutting the moving contact group 72 along the disconnection direction X2. The elastic member 75 is suitable for abutting the abutting surface 18 of the accommodating member 6. The first guide portion 103 and the second guide portion 78 are both centered between the first moving contact 88 and the second moving contact 89 along the Z-axis direction.

[0177] like Fig.26As shown, the housing 10 and the cover 11 are fixedly connected to form the accommodating member 6. The shielding cover 39 is placed in the accommodating member 6. The near guide portion 103 located at the front along the Y-axis direction extends into the left slide groove 14 of the slide groove 13 of the cover 11 along the Y-axis direction. The far guide portion 78 located at the front along the Y-axis direction extends into the right slide groove 15 of the slide groove 13 of the cover 11 along the Y-axis direction. The near guide portion 103 located at the rear along the Y-axis direction extends into the left slide groove 14 of the slide groove 13 of the housing 10 along the Y-axis direction. The far guide portion 78 located at the rear along the Z-axis direction extends into the right slide groove 15 of the slide groove 13 of the housing 10 along the Y-axis direction. As a result, each guide portion 109 extends into the corresponding slide groove 13 along the Y-axis direction and slides with the slide groove 13 along the X-axis direction. In this embodiment, the two proximal portions 103 are precision-matching guide portions, and the matching clearance between the precision-matching guide portions and the slide groove 13 along the Z-axis direction is smaller than the matching clearance between the distal guide portion 78 as a non-precision-matching guide portion and the slide groove 13 along the Z-axis direction. In this embodiment, the matching clearance between the two distal guide portions 78 as non-precision-matching guide portions and the two right slide grooves 15 along the Y-axis direction is smaller than the matching clearance between the two proximal portions 103 as precision-matching guide portions and the two left slide grooves 14 along the Y-axis direction. In this embodiment, the guide portion 109 is provided on the moving contact portion 4, and the slide groove 13 is provided on the accommodating member 13. In other embodiments, the guide portion 109 may be provided on the accommodating member 6, and the slide groove 13 may be provided on the moving contact portion 4.

[0178] like Fig. 27 As shown, in this embodiment, two guide portions 109 arranged along the Y-axis direction form a guide portion group. In this embodiment, there are two guide portion groups, and the guide portion group formed by two distal guide portions 78 is shown in the figure. The two guide portions 109 in the guide portion group extend away from each other along the Y-axis direction, and the two ends of the guide portion group along the Y-axis direction are slidably matched with the two protrusions 13a along the Y-axis direction. The two protrusions 13a limit the guide portion group and the moving contact portion 4 in the Y-axis direction. In this embodiment, the Z-axis direction is the gravity direction, so the lower side groove wall of the slide groove 13 supports the corresponding guide portion 109 upward.

[0179] See also Fig.23 , Fig.23 2 shows the state of the relay 1 when the armature assembly 38 is in the first position. Fig.23As shown, when the armature assembly 38 is in the first position, the moving contact group 72 is disconnected from the static contact group 7 along the disconnection direction X2, the relay 1 is in the off state, and the external circuit is turned off. At this time, the elastic member 75 abuts against the abutting surface 18 along the disconnection direction X2, causing the elastic member 75 to deform and store energy. The limit member 76 abuts against the moving contact group 72 along the disconnection direction X2, and each moving contact 85 presses against the elastic bracket group 74, and fixes the frame 94 of the elastic bracket 93 and the main body 98 of the elastic member 75 relative to the push member 70 along the X-axis direction, so that the frame 94 and the elastic member 75 are fixed relative to the push member 70. The moving spring 83 abuts against the two static contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in the off state.

[0180] When the coil winding 41 receives the first pulse electrical signal, the coil assembly 37 drives the armature assembly 38 to move along the closing direction X1, and the armature assembly 38 drives the moving contact part 4 to move along the closing direction X1. During this process, each guide part 109 slides in the sliding groove 13 along the closing direction X1 and guides the moving contact part 4. The elastic member 75 restores the deformation to release energy. When the moving contact 87 contacts the corresponding static contact 20, the pusher 70 enters the overtravel. At this time, the elastic bracket group 74 deforms to store energy until the armature assembly 38 reaches the second position, and the moving contact group 72 is closed with the static contact group 7.

[0181] See also Fig.24 and Fig.26 , Fig.24 and Fig.26 2 shows the state of the relay 1 when the armature assembly 38 is in the second position. Fig.24 As shown, when the armature assembly 38 is in the second position, the moving contact group 72 and the static contact group 7 are closed along the closing direction X1, the relay 1 is in the on state, and the external circuit is turned on. The third current-passing portion 27 of the first static contact 22 forms a reverse flow portion, and the current-passing direction of the reverse flow portion is opposite to the current-passing direction of the overcurrent bridge 86. The eighth current-passing portion 34 of the second static contact 23 forms a cross-flow portion, and the current-passing direction of the cross-flow portion is the disconnection direction X2 when the current-passing direction of the overcurrent bridge 86 is downward along the Z-axis direction and the cross-flow portion is located below the overcurrent bridge 86. The magnetic field formed by the current passing through the cross-flow portion acts on the overcurrent bridge 86 through which the current passes, so that the overcurrent bridge 86 is subjected to the first magnetic force F1 toward the static contact group 7. The elastic bracket group 74 deforms and stores energy along the X-axis direction. The elastic member 75 moves away from the abutment surface 18 along the X-axis direction. The moving spring 83 moves away from the two static contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in the on state.

[0182] like Fig.26As shown, the current passing through the overcurrent bridge 86 forms an anti-short circuit magnetic circuit M1 between the dynamic magnet 90 and the static magnet 8. In this embodiment, the number of the anti-short circuit magnetic circuits M1 is two. At the same time, the reverse flow magnetic field M2 formed by the current passing through the reverse flow portion formed by the third overcurrent portion 27 forms the same direction of magnetic flux lines formed on one side of the static magnet 8 as the magnetic flux lines formed on one side of the static magnet 8 by the anti-short circuit magnetic circuit M1.

[0183] When the coil winding 41 receives the second pulse electrical signal, the coil assembly 37 drives the armature assembly 38 to move along the disconnection direction X2, and the armature assembly 38 drives the moving contact part 4 to move along the disconnection direction X2. During this process, each guide part 109 slides in the slide groove 13 along the disconnection direction X2 and guides the moving contact part 4. The elastic bracket group 74 recovers the deformation and releases energy. The elastic member 75 deforms and stores energy after contacting the contact surface 18. Until it returns to Fig.23 The armature assembly 38 is shown in a first position.

[0184] The electric meter in this embodiment includes the relay 1 in this embodiment.

[0185] Embodiment 2

[0186] See also Fig.28 , Fig.28 The relay 1 in the second embodiment is shown. Fig.28 As shown, the only difference between this embodiment and the first embodiment is the shape of the proximal guide portion 103. In this embodiment, the proximal guide portion 103 is still the first guide portion, and the abutment portion of the first guide portion in this embodiment is a plane perpendicular to the Z-axis direction.

[0187] Embodiment 3

[0188] See also Fig.29 , Fig.29 The relay 1 in the third embodiment is shown. Fig.29 As shown, the only difference between this embodiment and the first embodiment is the different shapes of the near guide portion 103 and the far guide portion 78. In this embodiment, the near guide portion 103 and the far guide portion 78 are both first guide portions, and the near guide portion 103 and the far guide portion 78 serve as the first guide portion, and their abutment portions are planes perpendicular to the Z-axis direction.

[0189] Embodiment 4

[0190] See also Fig.30 , Fig.30 The relay 1 in the fourth embodiment is shown. Fig.30As shown, the only difference between this embodiment and the first embodiment is that the number and arrangement of the near guide parts 103 are different, and the slide groove 13 must also be adapted accordingly. In this embodiment, the number of the near guide parts 103 is four, of which two are located at the front of the limiting body 102 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the limiting body 102 along the Y-axis direction and extend backward along the Y-axis direction. The two near guide parts 103 located at the front are arranged along the Z-axis direction, the two near guide parts 103 located at the rear are arranged along the Z-axis direction, and the two near guide parts 103 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two near guide parts 103 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two left slide grooves 14 arranged along the Z-axis direction.

[0191] Embodiment 5

[0192] See also Fig.31 , Fig.31 The relay 1 in the fifth embodiment is shown. Fig.31 As shown, the difference between this embodiment and the first embodiment is that the shape of the near guide portion 103 is different, the shape, number and arrangement of the far guide portion 78 are different, and the slide groove 13 also needs to be adapted accordingly. In this embodiment, the near guide portion 103 is no longer the first guide portion, but the second guide portion, and its third projection on the first projection plane perpendicular to the Y axis is circular. In this embodiment, the far guide portion 78 is no longer the second guide portion, but the first guide portion, and its second projection on the first projection plane perpendicular to the Y axis direction is elliptical. In this embodiment, the number of far guide portions 78 is four, two of which are located at the front of the push body 77 along the Y axis direction and extend forward along the Y axis direction, and the other two are located at the rear of the push body 77 along the Y axis direction and extend backward along the Y axis direction. The two far guide portions 78 located at the front are arranged along the Z axis direction, the two far guide portions 78 located at the rear are arranged along the Z axis direction, and the two far guide portions 78 located at the upper part along the Z axis direction are arranged along the Y axis direction, and the two far guide portions 78 located at the lower part along the Z axis direction are arranged along the Y axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover 11 are provided with two right sliding grooves 15 arranged along the Z-axis direction.

[0193] Embodiment 6

[0194] See also Fig.32 , Fig.32 The relay 1 in the sixth embodiment is shown. Fig.32As shown, the difference between this embodiment and the first embodiment is that the shapes of the near guide portion 103 and the far guide portion 78 are different. In this embodiment, the near guide portion 103 is a second guide portion, and its third projection on the first projection plane perpendicular to the Y-axis direction is circular. In this embodiment, the far guide portion 78 is a first guide portion and a precision fit guide portion, and its second projection on the first projection plane perpendicular to the Y-axis direction is elliptical.

[0195] Embodiment 7

[0196] See also Fig.33 , Fig.33 The relay 1 in the seventh embodiment is shown. Fig.33 As shown, the difference between this embodiment and the first embodiment is that the distal guide portion 78 is no longer provided in this embodiment.

[0197] Embodiment 8

[0198] See also Fig.34 , Fig.34 The relay 1 in the eighth embodiment is shown. Fig.34 As shown, the difference between the sixth embodiment and the sixth embodiment is that the near guide portion 103 is no longer provided in this embodiment.

[0199] Embodiment 9

[0200] See also Fig.35 , Fig.35 The relay 1 in the ninth embodiment is shown. Fig.35 As shown, the difference between this embodiment and the eighth embodiment is that the number and arrangement of the far guide parts 78 are different, and the slide groove 13 also needs to be adapted accordingly. In this embodiment, the number of the far guide parts 78 is four, two of which are located at the front of the push body 77 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the push body 77 along the Y-axis direction and extend backward along the Y-axis direction. The two far guide parts 78 located at the front are arranged along the Z-axis direction, the two far guide parts 78 located at the rear are arranged along the Z-axis direction, and the two far guide parts 78 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two far guide parts 78 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two right slide grooves 15 arranged along the Z-axis direction.

[0201] Embodiment 10

[0202] See also Fig.36 , Fig.36 The relay 1 in the tenth embodiment is shown. Fig.36As shown, the difference between this embodiment and embodiment seven is that the number and arrangement of the near guide parts 103 are different, and the slide groove 13 must also be adapted accordingly. In this embodiment, the number of the near guide parts 103 is four, of which two are located at the front of the limiting body 102 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the limiting body 102 along the Y-axis direction and extend backward along the Y-axis direction. The two near guide parts 103 located at the front are arranged along the Z-axis direction, the two near guide parts 103 located at the rear are arranged along the Z-axis direction, and the two near guide parts 103 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two near guide parts 103 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two left slide grooves 14 arranged along the Z-axis direction.

[0203] Embodiment 11

[0204] See also Fig.37 , Fig.37 The relay 1 in the eleventh embodiment is shown. Fig.37 As shown, the difference between this embodiment and the first embodiment is that the number and arrangement of the far guide parts 78 are different, and the slide groove 13 also needs to be adapted accordingly. In this embodiment, the number of the far guide parts 78 is four, two of which are located at the front of the push body 77 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the push body 77 along the Y-axis direction and extend backward along the Y-axis direction. The two far guide parts 78 located at the front are arranged along the Z-axis direction, the two far guide parts 78 located at the rear are arranged along the Z-axis direction, and the two far guide parts 78 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two far guide parts 78 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two right slide grooves 15 arranged along the Z-axis direction.

[0205] Embodiment 12

[0206] See also Fig.38 , Fig.38 The relay 1 in the twelfth embodiment is shown. Fig.38As shown, the difference between this embodiment and the sixth embodiment is that the number and arrangement of the near guide parts 103 are different, and the slide groove 13 must also be adapted accordingly. In this embodiment, the number of the near guide parts 103 is four, two of which are located at the front of the limiting body 102 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the limiting body 102 along the Y-axis direction and extend backward along the Y-axis direction. The two near guide parts 103 located at the front are arranged along the Z-axis direction, the two near guide parts 103 located at the rear are arranged along the Z-axis direction, and the two near guide parts 103 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two near guide parts 103 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two left slide grooves 14 arranged along the Z-axis direction. In this embodiment, the far guide part 78 is a precision matching guide part.

[0207] Embodiment 13

[0208] See also Fig.39 , Fig.39 The relay 1 in the thirteenth embodiment is shown. Fig.39 As shown, the difference between this embodiment and the eleventh embodiment is that the number and arrangement of the near guide parts 103 are different, and the slide groove 13 must also be adapted accordingly. In this embodiment, the number of the near guide parts 103 is four, two of which are located at the front of the limiting body 102 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the limiting body 102 along the Y-axis direction and extend backward along the Y-axis direction. The two near guide parts 103 located at the front are arranged along the Z-axis direction, the two near guide parts 103 located at the rear are arranged along the Z-axis direction, and the two near guide parts 103 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two near guide parts 103 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two left slide grooves 14 arranged along the Z-axis direction.

[0209] Embodiment 14

[0210] See also Fig.40 , Fig.40 The relay 1 in the fourteenth embodiment is shown. Fig.40As shown, the difference between this embodiment and the twelve embodiment is that the number and arrangement of the far guide parts 78 are different, and the slide groove 13 also needs to be adapted accordingly. In this embodiment, the number of the far guide parts 78 is four, two of which are located at the front of the push body 77 along the Y-axis direction and extend forward along the Y-axis direction, and the other two are located at the rear of the push body 77 along the Y-axis direction and extend backward along the Y-axis direction. The two far guide parts 78 located at the front are arranged along the Z-axis direction, the two far guide parts 78 located at the rear are arranged along the Z-axis direction, and the two far guide parts 78 located at the upper part along the Z-axis direction are arranged along the Y-axis direction, and the two far guide parts 78 located at the lower part along the Z-axis direction are arranged along the Y-axis direction. Correspondingly, in this embodiment, both the housing 10 and the cover body 11 are provided with two right slide grooves 15 arranged along the Z-axis direction.

[0211] In each embodiment, the guide portion 109 extends into the slide slot 13 along the Y-axis direction and slides with the slide slot 13 along the X-axis direction. Since the direction in which the guide portion 109 extends into the slide slot 13 is perpendicular to the movement direction of the moving contact portion 4, the portion of the guide portion 109 suitable for sliding cooperation is much shorter than that of the prior art, and is not easily flexed and deformed, and its guiding effect is better than that of the prior art.

[0212] In each embodiment, since the guide portion 109 extends into the slide groove 13 along the Y-axis direction, the size of the fitting surface of the guide portion 109 and the slide groove 13 can be set to be smaller than that of the prior art. Compared with the prior art, the friction between the slide groove 13 and the guide portion 109 can be reduced, and the required driving force of the magnetic circuit portion 3 can be made smaller, thereby reducing the volume of the magnetic circuit portion 3, which is conducive to the miniaturization of the relay 1.

[0213] In each embodiment, the outer edge of the first projection of the correction portion of the first guide portion on the first projection plane is a convex curve. Therefore, even if the first guide portion is slightly deflected on the plane perpendicular to the Y-axis direction, the sliding fit with the slide groove 13 is not prone to jamming, which is beneficial to avoiding the need to increase the driving force of the magnetic circuit part 3 due to jamming, which is beneficial to reducing the useless work of the magnetic circuit part 3, and thus helps to reduce the power consumption of the coil assembly 37.

[0214] In each embodiment, the radius of curvature of the convex curve formed by the outer edge of the first projection of the first guide portion is greater than half of the dimension of the guide portion 109 along the Z-axis direction, which is not only conducive to avoiding jamming of the sliding fit between the first guide portion and the slide groove 13, but also compared with the comparative technical scheme in which the radius of curvature is less than or equal to half of the dimension of the guide portion 109 along the Z-axis direction, it can have a better guiding effect on the movement of the moving contact part 4 along the X-axis direction, which is conducive to the correct closure of the moving contact 87 with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87 and the static contact 20 as well as the entire relay 1.

[0215] In each embodiment, the two moving contacts 87 are arranged along the Z-axis direction, and the guide portion 109 extends into the slide groove 13 along the Y-axis direction. Therefore, the arrangement direction of the two moving contacts 87 is perpendicular to the direction in which the guide portion 109 extends into the slide groove 13, which can more reasonably utilize the space in three directions of the relay 1 and reduce the size of the relay 1 along the Z-axis direction.

[0216] In other embodiments except for Embodiment 2 and Embodiment 3, the second projection is an ellipse whose major axis extends in the X-axis direction. Therefore, the interference portion of the first guide portion is a point or a line segment extending in the Y-axis direction. The contact area between the interference portion and the side groove wall of the slide groove 13 is smaller, and the friction between the first guide portion and the slide groove 13 is smaller, so that the required driving force of the magnetic circuit portion 3 is smaller, thereby reducing the volume of the magnetic circuit portion 3, which is conducive to the miniaturization of the relay.

[0217] In some embodiments, when the first guide portion is ellipsoidal, the interference portion of the first guide portion is a point. Compared with the technical solution in which the first guide portion is ellipsoidal, the contact area between the interference portion and the side groove wall of the slide groove 13 is smaller, and the friction between the first guide portion and the slide groove 13 is smaller, so that the required driving force of the magnetic circuit portion 3 is smaller, thereby reducing the volume of the magnetic circuit portion 3, which is conducive to the miniaturization of the relay.

[0218] In other embodiments except for Embodiment 2 and Embodiment 3, when the first guide portion is in the shape of an elliptical cylinder, the interference portion of the first guide portion is a line segment extending along the Y-axis direction. Compared with the technical solution in which the first guide portion is in the shape of an ellipsoid, the moving contact portion is less likely to deflect on a plane perpendicular to the X-axis direction, thereby being able to provide a better guiding effect on the movement of the moving contact portion 4 along the X-axis direction, which is beneficial for the moving contact 87 to correctly close with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87, the static contact 20 and the entire relay 1.

[0219] In Embodiment 2 and Embodiment 3, the abutment portion is a plane perpendicular to the Z-axis direction, and the plane must have dimensions in the X-axis direction and the Y-axis direction. Therefore, compared with the second to fourth technical solutions, the moving contact portion 4 is less likely to deflect on the plane perpendicular to the Y-axis direction and the plane perpendicular to the X-axis direction, thereby being able to provide a better guiding effect on the movement of the moving contact portion 4 along the X-axis direction, which is beneficial for the moving contact 87 to correctly close with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87, the static contact 20 and the entire relay 1.

[0220] In other embodiments except embodiments seven to ten, the guide portion 109 has only a second guide portion in addition to the first guide portion, and the third projection of the second guide portion is circular. Under the premise that the first guide portion already exists to improve the guiding effect, the second guide portion is provided to facilitate cooperation with the first guide portion to avoid jamming of the sliding cooperation with the slide groove 13, thereby reducing the power consumption of the coil assembly 37. At the same time, compared with providing a guide portion 109 with a non-circular third projection in addition to the first guide portion, all guide portions 109 are easier to extend into the corresponding slide groove along the Z-axis direction, so that the moving contact portion 4 and the accommodating member 6 are easier to establish a sliding cooperation relationship along the X-axis direction.

[0221] In each embodiment, a protrusion 13a is provided at the bottom of the first chute, and the protrusion 13a protrudes from the bottom of the chute along the Y-axis direction and extends along the X-axis direction. Therefore, the top of the guide portion 109 along the Y-axis direction is suitable for sliding cooperation with the protrusion 13a, and compared with the top of the guide portion 109 along the Y-axis direction directly sliding cooperation with the bottom of the chute, the sliding cooperation area is smaller, which can reduce the friction between the chute 13 and the guide portion 109, and make the required driving force of the magnetic circuit portion 3 smaller, thereby reducing the volume of the magnetic circuit portion 3, which is conducive to miniaturization of the relay 1.

[0222] In each embodiment, recesses 13b are provided between the protrusion 13a of the first slide groove and the side groove walls on both sides. The protrusion 13a of the first slide groove abuts against the top of the guide portion 109 along the Y-axis direction, and the debris generated by the friction between the two will fall into the recesses 13b on both sides without affecting the sliding fit between the guide portion 109 and the protrusion 13, thereby avoiding jamming or increased friction due to residual debris on the sliding fit surface.

[0223] In each embodiment, at least two openings of the first slide grooves are facing or away from each other along the Y-axis direction, and the protrusions 13a of the two first slide grooves abut against the top of the corresponding guide portion 109 along the Y-axis direction in a manner facing or away from each other along the Y-axis direction, which is beneficial to making the matching clearance between the guide portion 109 and the first slide groove along the Y-axis direction smaller. When the moving contact part 4 moves along the X-axis direction, it is less likely to deflect on the plane perpendicular to the Z-axis direction, and the guiding effect is better, which is beneficial to the correct closure of the moving contact 87 with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87, the static contact 20 and the entire relay 1.

[0224] In each embodiment, the two first slide grooves with openings facing or away from each other are arranged along the Y-axis direction, which is beneficial to avoid the guide portion 109 from deflecting on a plane perpendicular to the Z-axis direction. Therefore, the guiding effect is better, which is beneficial to the correct closing of the moving contact 87 with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87, the static contact 20 and the entire relay 1.

[0225] In other embodiments except for the eighth and ninth embodiments, the proximal guide portion 103 is disposed on the stopper 76, which means that the slide groove 13 is disposed on the accommodating member 6. Since the stationary contact assembly 7 is fixedly connected to the accommodating member 6, the slide groove 13 is disposed on the accommodating member 6 to ensure that the extension direction of the slide groove 13 is perpendicular to the arrangement direction of the stationary contacts 20 of the two stationary contacts 19, so that the slide groove 13 guides the guide portion 109 more accurately along the X-axis direction.

[0226] In other embodiments except for Embodiment 8 and Embodiment 9, since the limit member 76 has been abutting against the moving contact 85 before the pushing member 70 moves along the closing direction X1 into the overstroke, and when entering the overstroke, the moving contact 87 has already abutted against the corresponding static contact 20, a near guide portion 103 is provided on the limit member 76, which can better guide the moving contact 85 to move along the X-axis direction, so that the moving contact 87 can correctly close with the static contact 20 along the X-axis direction, reduce the contact resistance between the moving contact 87 and the static contact 20, and shorten the arc pulling time when the moving contact 87 and the static contact 20 are disconnected, which is beneficial to increase the service life of the moving contact 87 and the static contact 20.

[0227] In Examples 1 to 4, Example 7, Example 10, Example 11 and Example 13, the near guide portion 103 is a first guide portion, which can better guide the movement of the moving contact part 4 along the X-axis direction at a position closer to the moving contact 85 along the X-axis direction, so that the moving contact 87 can be more easily and correctly closed with the static contact 20 along the X-axis direction.

[0228] In Example 4, Example 10 and Examples 12 to 14, at least two proximal guide portions 103 are arranged along the Z-axis direction, making it less likely for the moving contact portion 4 to deflect on a plane perpendicular to the Y-axis direction, thereby better guiding the movement of the moving contact portion 4 along the X-axis direction.

[0229] In each embodiment, the two proximal guide portions 103 are arranged along the Y-axis direction and extend into the corresponding slide grooves 13 away from each other along the Y-axis direction. Therefore, when the Z-axis direction is the gravity direction, the two slide grooves 13 can support the two proximal guide portions 103 along the Z-axis direction, thereby supporting the stopper 76. In this case, it is more conducive to preventing the movable contact portion 4 from deflecting on a plane perpendicular to the X-axis, so that the movement of the movable contact portion 4 along the X-axis direction can be better guided.

[0230] In the first to third embodiments, the fifth to seventh embodiments and the eleventh embodiment, the number of the near guide parts 103 is two, and the two near guide parts 103 are centered between the two moving contacts 87 along the Z-axis direction. Therefore, the near guide part 103 is centered along the Z-axis direction, which can save the space of the relay 1 along the Z-axis direction and avoid the increase of the size of the relay 1 along the Z-axis direction. At the same time, it is less likely that the movement of the near guide part 103 along the X-axis direction will be stuck due to the two slide grooves 13 arranged along the Z-axis direction are not parallel to each other, so that the magnetic driving force of the magnetic circuit part 3 is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly 37.

[0231] In Examples 1 to 4, Example 7, Example 10, Example 11 and Example 13, when the proximal guide portion 103 extends from the connecting portion 105 along the Y-axis direction and the proximal guide portion 103 is the first guide portion, it is more conducive to technical implementation.

[0232] In the other embodiments except the eighth and ninth embodiments, the proximal guide portion 103 is stamped, which has fewer manufacturing steps, is simpler to manufacture, has lower cost, and the outer edge size and position of the proximal guide portion 103 are easier to ensure, which is beneficial to better guide the movement of the moving contact portion 4 along the X-axis direction.

[0233] In some embodiments, the proximal guide portion 103 and the receiving member 6 are both made of plastic, which helps prevent scraps from falling on the moving contact 87 and the static contact 20 and affecting the contact resistance between the moving contact 87 and the static contact 20 .

[0234] In each embodiment, the material of the limiting body 102 is metal, so it has stronger rigidity and better limiting effect on the movable contact assembly 4 .

[0235] In some embodiments, the proximal guide portion 103 and the limiting body 102 are integrally formed by insert injection molding or bonded or screwed, and the combination of the two is better. The position of the proximal guide portion 103 along the Z-axis direction is more precise, which is conducive to better sliding cooperation with the slide groove 13 along the X-axis direction.

[0236] In other embodiments except for the seventh and tenth embodiments, the pusher 70 is provided with a distal guide portion 78, the stopper 76 is provided with a proximal guide portion 103, and the stopper 76 is fixedly connected to the pusher 70, so the distal guide portion 78 and the proximal guide portion 103 cooperate with each other, which is conducive to preventing the pusher 70 and the stopper 76 fixedly connected to each other from deflecting the whole formed on the plane perpendicular to the Y-axis direction, and is conducive to better guiding the movement of the moving contact part 4 along the X-axis direction. Therefore, it is conducive to ensuring that the moving contact 87 is correctly closed with the static contact 20 along the X-axis direction.

[0237] In Example 3, Example 5, Example 6, Example 8, Example 9, Example 12 and Example 14, the distal guide portion 78 is the first guide portion, which is not only beneficial for avoiding jamming of the moving contact part 4 when it moves along the X-axis direction, but also can better guide the movement of the moving contact part 4 along the X-axis direction, especially the movement of the moving contact part 4 along the disconnection direction X2.

[0238] In other embodiments except for the seventh to the tenth embodiments, at least one proximal guide portion 103 and one distal guide portion 78 extend into the corresponding slide groove 13 away from each other along the Y-axis direction, so when the Z-axis direction is the gravity direction, the two slide grooves 13 can support at least one proximal guide portion 103 and at least one distal guide portion 78 along the Z-axis direction, thereby supporting the moving contact portion 4. In this case, it is more conducive to preventing the moving contact portion 4 from deflecting on a plane perpendicular to the X-axis, so that the movement of the moving contact portion 4 along the X-axis direction can be better guided.

[0239] In Example 5, Example 9, Example 11, Example 13 and Example 14, at least two distal guide portions 78 are arranged along the Z-axis direction, making it less likely for the moving contact part 4 to deflect on a plane perpendicular to the Y-axis direction, thereby being able to better guide the movement of the moving contact part 4 along the X-axis direction.

[0240] In other embodiments except for the seventh and tenth embodiments, at least two distal guide portions 78 are arranged along the Y-axis direction and extend into the corresponding slide grooves 13 away from each other along the Y-axis direction, so that when the Z-axis direction is the gravity direction, the two slide grooves 13 can support the two distal guide portions 78 along the Z-axis direction, thereby supporting the pusher 70 and the moving contact portion 4. In this case, it is more conducive to preventing the moving contact portion 4 from deflecting on a plane perpendicular to the X-axis, so that the movement of the moving contact portion 4 along the X-axis direction can be better guided.

[0241] In the first to fourth embodiments, the sixth embodiment, the eighth embodiment and the twelfth embodiment, the number of the distal guide parts 78 is two, and the two distal guide parts 78 are centered between the two moving contacts 87 along the Z-axis direction. Therefore, the distal guide part 78 is centered along the Z-axis direction, which can save the space of the relay 1 along the Z-axis direction and avoid the increase of the size of the relay 1 along the Z-axis direction. At the same time, it is less likely that the movement of the distal guide part 78 along the X-axis direction will be stuck due to the two slide grooves 13 arranged along the Z-axis direction being not parallel to each other, so that the magnetic driving force of the magnetic circuit part 3 is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly 37.

[0242] In Example 1, Example 6 and Example 12, the fitting clearance formed by the precise fitting guide portion and the slide groove 13 along the Z-axis direction is smaller than the fitting clearance formed by the non-precise fitting guide portion and the slide groove 13 along the Z-axis direction, which is beneficial to reduce the difficulty of establishing sliding fit between all guide portions 109 and the slide groove 13, reduce the manufacturing accuracy requirements of the moving contact part 4 and the fixed part 2, and is also beneficial to correctly guide the movement of the moving contact part 4 along the X-axis direction.

[0243] In the first, sixth and twelfth embodiments, the precise matching guide portion is the first guide portion. Therefore, as long as the precise matching guide portion is slightly deflected on the plane perpendicular to the Y axis, the side groove wall of the slide groove 13 can be corrected by acting on the deviation correction portion because it is the first guide portion, thereby better exerting the unique guiding and anti-jamming effects of the first guide portion.

[0244] In embodiment one, the precision fitting guide portion is a near guide portion, and therefore the precision fitting guide portion is closer to the moving contact 85 along the X-axis direction, which is more conducive to the correct closing of the moving contact 87 with the static contact 20 along the X-axis direction, thereby reducing the contact resistance between the moving contact 87 and the static contact 20, shortening the length of time for pulling the arc when the moving contact 87 is disconnected from the static contact 20, and increasing the life of the moving contact 87, the static contact 20 and the entire relay.

[0245] In the first embodiment, the precise matching guide portion is placed in the middle of the near guide portion 103 and the first guide portion along the Z-axis direction, which can save the space of the relay 1 along the Z-axis direction and avoid the increase of the size of the relay 1 along the Z-axis direction. At the same time, it is less likely that the movement of the near guide portion 103 along the X-axis direction will be stuck due to the two slide grooves 13 arranged along the Z-axis direction being not parallel to each other, so that the magnetic driving force of the magnetic circuit part 3 is not easily wasted on useless work, thereby reducing the energy consumption of the coil assembly 37.

[0246] In other embodiments except for the seventh to the tenth embodiment, the matching clearance between the two non-precision matching guides arranged along the Y-axis direction and the corresponding slide grooves 13 along the Y-axis direction is smaller than the matching clearance between the two precision matching guides and the corresponding slide grooves 13 along the Y-axis direction, which is more conducive to improving the matching accuracy between the moving contact part 4 and the accommodating member 6 in the Y-axis direction. At the same time, it is also conducive to assembling the moving contact part 4 to the accommodating member 6 along the Y-axis direction so that each guide 109 and the slide groove 13 establish a sliding matching relationship, so that the non-precision matching guide can be inserted into the slide groove 13 along the Y-axis direction before the precision matching guide for pre-guiding, and then the precision matching guide can be inserted into the slide groove along the Y-axis direction, making assembly easier.

[0247] In each embodiment, the static contacts 20 of the two static contacts 19 are arranged along the Z-axis direction, and the moving contact group 72 is closed or disconnected with the static contact group 7 along the X-axis direction to correspondingly conduct or disconnect the electrical connection between the two static contacts 19. Under this structure, the safety distance between the moving contact group 72 and the static contact group 7 is twice the actual distance between the moving contact 87 and the corresponding static contact 20 along the X-axis direction, so the relay 1 has higher safety and stronger load capacity, which is more conducive to improving the safety distance between the moving contact group 72 and the static contact group 7.

[0248] In each embodiment, the static contacts 20 of the two static contacts 19 are arranged along the Z-axis direction, and the connection terminals 21 of the two static contacts 19 are arranged along the X-axis direction and extend out of the accommodating member 6 along the Z-axis direction. Compared with the static contacts 19 extending out of the accommodating member 6 along the moving direction of the moving contact group 72, the size in the X-axis direction is shortened, and the space in the Z-axis direction is effectively utilized. Therefore, the size of the relay 1 along the X-axis direction and the size along the Z-axis direction achieve a good balance, which can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0249] In each embodiment, on the basis of retaining the coil assembly 37 of the swing-type magnetic latching relay, the two armatures 51 fixed to the permanent magnet 50 in the armature assembly 38 are improved from being arranged in parallel to being crossed with each other, so that the armature assembly 38 can be converted from swinging relative to the coil assembly 37 to linear motion relative to the coil assembly 37. Since the armature assembly 38 moves linearly relative to the coil assembly 37, there is no loss of the radial component of the swing stroke of the swing-type magnetic latching relay. Therefore, the space utilization rate of the relay 1 can be higher, and more favorable conditions can be created for increasing the safe distance between the moving contact assembly 72 and the static contact assembly 7 in a limited space.

[0250] In each embodiment, since the axis of the coil winding 41 extends along the Z-axis direction and the two magnetic drive ends 45 are arranged along the Z-axis direction, and the linear movement direction of the armature assembly 38 is the X-axis direction perpendicular to the Z-axis direction, such a layout is conducive to making room for the movement of the armature assembly 38 and the moving contact group 72 along the X-axis, and, at this time, the size of the accommodating member 6 along the Z-axis direction is mainly determined by the length of the coil assembly 37 along the Z-axis direction, so that the relay 1 will not require a long length in one direction (whether in the X-axis direction or the Z-axis direction), which can make it easier for the relay 1 to adapt to limited space and create more favorable conditions for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0251] In each embodiment, there is no need to insert a push rod and a moving iron core in the coil winding 41, so the support shaft diameter of the coil frame 40 is smaller, and the inner diameter of the coil winding 41 is smaller. Compared with the direct-acting magnetic holding relay in the prior art, when the space occupied by the coil assembly 37 is the same, the magnetic driving force generated by the coil winding 41 is stronger, and the driving force on the armature assembly 38 is greater, which can create more favorable conditions for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0252] In each embodiment, the two suction parts 60 of the armature assembly 38 can form a first part of a magnetic circuit without any air gap through the permanent magnet 50 and the two armatures 51, and the two magnetic drive ends 45 of the coil assembly 37 can also form a second part of a magnetic circuit that runs through the entire coil assembly 37. In the magnetic holding state, the suction part 60 attracts the corresponding magnetic drive end 45 along the X-axis direction, so that the first part and the second part can form a complete magnetic circuit without an air gap, so the magnetic loss is small and the magnetic efficiency is higher. Without increasing the power consumption of the coil assembly 37, it is beneficial to increase the movement stroke of the moving contact group 72; and when the magnetic driving force is equivalent, it can reduce the power consumption required for the coil assembly 37 to achieve magnetic drive, which is beneficial to make the size of the coil assembly 37 smaller. Therefore, it can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0253] In each embodiment, since the second part of the above-mentioned magnetic circuit passes through the entire coil assembly 37, the magnetic force during magnetic holding is greater than that of the direct-acting magnetic holding relay in the prior art. In particular, when the relay 1 is impacted by a large fault current, the armature assembly 38 is less likely to break away from the magnetic holding state and move, which is beneficial to avoid the moving contact group 72 from breaking away from the static contact group 7 due to the large fault current, resulting in destructive arcing.

[0254] In each embodiment, when the armature assembly 38 is in the magnetic holding state at the first position, when the coil assembly 37 is excited by the pulse electric signal to reverse the polarity temporarily formed by the two magnetic drive ends 45, not only the two magnetic drive ends 45 generate magnetic repulsion on the first suction part 61 and the third suction part 63, but also the fourth suction part 64 and the second suction part 62 form the first part of the push magnetic circuit without air gap through the armature assembly 38, and the two magnetic drive ends 45 form the second part of the push magnetic circuit running through the entire coil assembly 37 through the coil assembly 37, and the first part and the second part of the push magnetic circuit constitute a complete push magnetic circuit, in which there is only the necessary stroke air gap, and no other air gap, so the magnetic efficiency is higher, and the two magnetic drive ends 45 act on the armature assembly 38 under the same power consumption. The magnetic drive force is stronger, which is more conducive to increasing the safety distance between the moving contact member group 72 and the static contact member group 7. Similarly, when the armature assembly 38 is in the magnetic holding state at the second position, when the coil assembly 37 is excited by the pulse electric signal to reverse the polarity temporarily formed by the two magnetic drive ends 45, it also has the same technical effect.

[0255] In each embodiment, since the first suction part 61 and the fourth suction part 64 are arranged along the X-axis direction, the third suction part 63 and the second suction part 62 are arranged along the X-axis direction, the first suction part 61 and the third suction part 63 are arranged along the Z-axis direction, and the fourth suction part 64 and the second suction part 62 are arranged along the Z-axis direction, the four suction parts 60 of the armature assembly 38 are respectively located at the four vertices of the rectangle on the first projection plane, which is convenient for adjusting the dimensions of the armature assembly 38 along the X-axis direction and the Z-axis direction, creating more favorable conditions for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0256] In each embodiment, permanent magnets 50 are arranged on both sides of the intersecting portion 59 along the Z axis, and the two magnetic poles 54 of the permanent magnet 50 are arranged along the X axis direction. Without increasing the size of the armature assembly 38 along the X axis direction and the Z axis direction, the space occupied by the armature assembly 38 is fully utilized to increase the magnetic force between the magnetic drive end 45 and the armature assembly 38, which is more conducive to increasing the safety distance between the moving contact assembly 72 and the static contact assembly 7. Since each permanent magnet 50 is connected together by two armatures 51, the difference in strength of the magnetic field of each permanent magnet 50 is effectively weakened on the two armatures 51, and the magnetic driving force between the suction portion 60 on both sides and the magnetic drive end 45 can be more balanced along the X axis direction, so the relay 1 is less likely to get stuck and has a longer service life.

[0257] In each embodiment, the projection of the armature assembly 38 on the first projection plane is mirror-symmetrical along the symmetry plane perpendicular to the Z-axis, so that the magnetic field strength of the armature assembly 38 on both sides along the Z-axis direction is more consistent, and the center of gravity is easier to maintain on the symmetry plane. The linear motion of the armature assembly 38 is less likely to be skewed, the relay 1 is less likely to get stuck and has a longer life, the magnetic driving force is less likely to be wasted on useless work, and more favorable conditions can be created for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0258] In each embodiment, the two moving contacts 87 of the moving contact 85 are arranged along the Z-axis direction and fixedly connected to the overcurrent bridge 86 extending along the Z-axis direction, so that the current passing through the overcurrent bridge 86 can flow along the Z-axis direction, which is convenient for forming a magnetic circuit for anti-short circuit. The anti-short circuit magnetic circuit is used to enable the moving contact group 72 to be more reliably closed with the static contact group 7. When the relay 1 is subjected to a large fault current, it is beneficial to prevent the moving contact group 72 from detaching from the static contact group 7, thereby avoiding destructive arcing and causing damage to the relay 1.

[0259] In each embodiment, the number of the moving contacts 85 in the moving contact group 72 is more than two, and each moving contact 85 is arranged along the Y-axis direction. Therefore, when the moving contact group 72 and the stationary contact group 7 are closed, each moving contact 85 is connected in parallel with each other, which can increase the load capacity of the relay 1 and reduce the contact resistance between the moving contact 87 and the stationary contact 20. At the same time, combined with the technical means of extending the overcurrent bridge 86 along the Z-axis direction and the technical means of moving the moving contact 85 along the X-axis direction, the relay 1 can make fuller use of the space in all directions, and the structure is more compact, creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0260] In each embodiment, the connecting terminal 21 of at least one static contact 19 is located between the static contact 20 and the coil winding 41 along the X-axis direction, thereby increasing the distance between the two connecting terminals 21 along the X-axis direction, making it less likely for a short circuit to occur between the two static contacts 19, and being able to meet the requirements for installing an external transformer.

[0261] In each embodiment, the eighth current-passing portion 34 of the second static contact 23 forms a cross-current portion, which is located outside the moving contact group 72 along the Z-axis direction and connected to the connection terminal 21 along the disconnection direction. The magnetic field generated by the current in the cross-current portion acts on the overcurrent bridge 86 whose overcurrent direction is the Z-axis direction, and generates a magnetic force toward the static contact group 7 on the overcurrent bridge 86, which enables the moving contact group 72 to be more reliably closed with the static contact group 7. Since the magnetic force increases with the increase of current, when the relay 1 is subjected to a large fault current, it is helpful to prevent the moving contact group 72 from being separated from the static contact group 7, thereby avoiding destructive arcing and causing damage to the relay 1.

[0262] In each embodiment, the moving magnet group 73 and the static magnet 8 form an anti-short circuit magnetic circuit M1 when the current flows through the overcurrent bridge 86 along the Z-axis direction, so that the moving magnet group 73 and the moving contact group 72 are subjected to magnetic force in the closing direction, so that the moving contact group 72 can be more reliably closed with the static contact group 7. Since the magnetic force increases with the increase of current, it is helpful to prevent the moving contact group 72 from being separated from the static contact group 7 when the relay 1 is subjected to a large fault current, thereby avoiding destructive arcing and causing damage to the relay 1.

[0263] In each embodiment, the moving magnetizer 90 is arranged corresponding to the moving contact 85, so that an anti-short-circuit magnetic circuit M1 can be formed around each moving contact 85, so that each moving contact 85 is not easy to separate from the static contact group 7. The magnetic body 91 is fixed to the back of the overcurrent bridge 86, so that most of the magnetic field generated by the current of the overcurrent bridge 86 can be confined in the anti-short-circuit magnetic circuit, thereby improving the magnetic efficiency. The extension 92 extends from the magnetic body 91 along the closing direction, so when the moving contact group 72 and the static contact group 7 are closed, the air gap between the moving magnetizer 90 and the static magnetizer 8 is smaller, the magnetic resistance of the anti-short-circuit magnetic circuit M1 is smaller, and the moving contact group 72 is less likely to separate from the static contact group 7. Therefore, the moving contact group 72 can be closed more reliably with the static contact group 7, which is conducive to preventing the moving contact group 72 from separating from the static contact group 7 when the relay 1 is subjected to a large fault current, thereby avoiding destructive arcing and causing damage to the relay 1.

[0264] In each embodiment, the static conductive magnet 8 is fixed to the receiving member 6, so that the static conductive magnet 8 is easier to install.

[0265] In each embodiment, the static contacts 20 of the two static contacts 19 are respectively located on both sides of the static magnet 8 along the Z-axis direction, so that the magnetic force formed by the anti-short-circuit magnetic circuit M1 formed by the static magnet 8 and the dynamic magnet group 73 on the dynamic contact group 72 can be more balanced along the Z-axis direction, and the two dynamic contacts 87 are not easy to disengage from the corresponding static contacts 20.

[0266] In each embodiment, the flow direction of the reverse flow portion is opposite to the flow direction of the overcurrent bridge 86, and the static conductive magnet 8 is located between the reverse flow portion and the dynamic conductive magnet group 73 along the X-axis direction. Therefore, the direction of the magnetic flux lines of the magnetic field generated by the overcurrent in the reverse flow portion on the side where the static conductive magnet 8 is located is the same as the direction of the magnetic flux lines formed by the anti-short-circuit magnetic circuit M1 on the side where the static conductive magnet 8 is located, thereby enhancing the magnetic field strength of the static conductive magnet 8 and making the magnetic force formed between the static conductive magnet 8 and the dynamic conductive magnet group 73 stronger. When the relay 1 is subjected to a large fault current, the dynamic contact group 72 is less likely to detach from the static contact group 7, thereby avoiding destructive arcing and causing damage to the relay 1.

[0267] In each embodiment, the second surface S2 is closer to the moving magnet group 73 than the first surface S1 along the X-axis direction, so the static magnet 8 is not embedded between the two static contacts 19 except the static contact 20 along the Z-axis direction, which increases the creepage distance between the static contact 19 and the static magnet 8, and improves the withstand voltage of the relay 1. At the same time, it is also beneficial to reduce the distance between the two static contacts 20 along the Z-axis direction, which is beneficial to reduce the size of the accommodating member 6 along the Z-axis direction, and can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0268] In each embodiment, the projections of the parts of all the static contacts 20 suitable for contacting the moving contact group 72 on the second projection plane perpendicular to the Z-axis direction are all located within the projection of the static conductive magnet 8 on the second projection plane, and the surface of the static conductive magnet 8 facing the moving conductive magnet group 73 is closer to the moving conductive magnet group 73 along the X-axis direction than all the static contacts 20. Therefore, when the moving contact group 72 separates the arc from the static contact group 7, the magnetic field generated by the arcs on both sides gathers on the static conductive magnet 8, making it difficult for the arc to propagate to both sides along the Z-axis direction, which can reduce the erosion of the surrounding accommodating member 6 by the arc escape between the moving contact 87 and the static contact 20, and ensure the service life of the relay 1. On this basis, the distance between the two static contacts 20 along the Z-axis direction can be designed to be closer, which is conducive to reducing the size of the accommodating member 6 along the Z-axis direction, and can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0269] In each embodiment, two blocking members 9 are fixed to the accommodating member 6 and are located outside the static contact group 7 along the Z-axis direction. Each blocking member 9 extends along the X-axis direction so that the projection of the portion of each static contact 20 suitable for contacting the moving contact 87 on the second projection plane perpendicular to the Z-axis direction is located within the projection of each blocking member 9 on the second projection plane. Therefore, when the moving contact group 72 separates the arc from the static contact group 7, the arc will not be transmitted to the two side walls of the accommodating member 6 along the Z-axis direction, ensuring the insulation performance of the accommodating member 6. The blocking member 9 is made of high-temperature resistant insulating material, which can prevent the heat of the arc from destroying the blocking member 9 when the load is large and the arc generates a lot of heat, avoiding damage to the blocking member 9, which is beneficial to improving the load capacity of the relay 1.

[0270] In each embodiment, the elastic bracket group 74 is disposed between the pusher 70 and the movable contact group 72, and can provide elastic force to the movable contact group 72 along the closing direction X1 after the pusher 70 experiences an overtravel, so that the movable contact group 72 can be more reliably closed with the stationary contact group 7, and when the relay 1 is subjected to a large fault current, the movable contact group 72 is less likely to be separated from the stationary contact group 7, thereby avoiding destructive arcing and causing damage to the relay 1. The elastic bracket group 74 can also generate additional repulsive force when the movable contact group 72 is disconnected from the stationary contact group 7, helping the movable contact 85 to disconnect from the stationary contact group 7.

[0271] In each embodiment, by providing the limiting member 76 , it can be ensured that when the moving contact member group 72 is disconnected from the stationary contact member group 7 , the distance between the moving contact member group 72 and the stationary contact member group 7 meets the design requirements.

[0272] In each embodiment, the armature assembly 38 and the pusher 70 are integrally formed by insert injection molding, which avoids errors that may occur during the assembly process of the armature assembly 38 and the pusher 70, and also makes the pusher 70 and the armature assembly 38 more integrated with fewer parts, which is conducive to making full use of limited space.

[0273] In each embodiment, the connecting member 71 and the pushing member 70 are insert-molded as one piece, so that the limiting member 76 is easier to be fixed relative to the pushing member 70, and the limiting member 76 is more rigid, which has a better limiting effect on the moving contact group 72 and can also save the size of the relay 1 along the Z-axis direction; the two ends of the connecting member 71 along the Y-axis direction respectively extend out of the pushing member 70 to form a connecting end 84 fixedly connected to the limiting member 76, which can save the size of the relay 1 along the Z-axis direction and create more favorable conditions for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0274] In each embodiment, the first elastic portion 95 is arranged corresponding to the moving contact 85, and each moving contact 85 is fixedly connected to the corresponding first elastic portion 95. Therefore, the posture of each moving contact 85 can be adjusted by the relatively independent first elastic portion 95, which is more conducive to the two moving contacts 87 of the moving contact 85 to reliably close with the corresponding static contact 20.

[0275] In each embodiment, the first elastic portion 95 includes two first elastic arms 97 fixedly connected to the overcurrent bridge 86, which is conducive to the free swinging of the movable contact 85 to adjust the posture. The positions where the two first elastic arms 97 are fixedly connected to the overcurrent bridge 86 are respectively located on the back of the corresponding movable contact 87, so that the elastic force of the two first elastic arms 97 can directly act on the two movable contacts 87, and can further ensure that the two movable contacts 87 are reliably closed with the corresponding static contacts 20.

[0276] In each embodiment, the elastic member 75 stores energy due to deformation when the pushing member 70 moves along the disconnecting direction X2 and releases energy due to restoring the deformation when the pushing member 70 moves along the closing direction X1, which can better help the moving contact group 72 to start from the disconnected position and approach the static contact group 7, which is beneficial to increase the movement stroke of the moving contact group 72, and thus also helps to increase the safety distance between the moving contact group 72 and the static contact group 7.

[0277] In each embodiment, the main body 98 of the elastic member 75 is sheet-shaped and fixed relative to the pushing member 70, and the second elastic arm 101 extends to both sides of the Z-axis direction and is suitable for abutting the accommodating member 6, which can make the elastic member 75 occupy a smaller space along the X-axis direction and have good elastic deformation ability, avoiding the compression length of the spring when using the spring as the elastic member 75 to increase the size of the moving contact part 4 along the X-axis direction, thereby helping to reduce the size of the relay 1 along the X-axis direction, and thus creating more favorable conditions for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

[0278] In each embodiment, by providing the micro switch 5 , the external relay state sensing circuit can be informed of the on / off state of the relay 1 , so that the management of the relay 1 is facilitated.

[0279] In each embodiment, the stationary contact terminal 110 is located between the movable spring 83 and the coil winding 41 along the X-axis direction, which can effectively utilize the space between the pusher 70 and the coil winding 41, and avoid increasing the size of the accommodating member 6 along the Z-axis direction when the stationary contact terminal 110 is arranged outside the coil assembly 37 along the Z-axis direction, creating more favorable conditions for increasing the safe distance between the movable contact member group 72 and the stationary contact member group 7 in a limited space. The movable spring 83 is fixedly connected to the pusher 70, so that the position and movement of the movable spring 83 are more certain.

[0280] In each embodiment, by providing a shielding cover 39, the magnetic field of the coil assembly 37 is compressed within the iron core 43 and the yoke 44, thereby increasing the magnetic field strength between the two magnetic drive ends 45, which is beneficial to improving the magnetic efficiency and the driving force of the magnetic circuit portion 3, and can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the static contact group 7 in a limited space, while also preventing the magnetic circuit portion 3 from being affected by the external magnetic field.

[0281] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. A relay, comprising a fixed part and a moving contact part, wherein the fixed part is provided with a static contact, and the moving contact part is provided with a moving contact, wherein the moving contact part moves relative to the fixed part along the X-axis direction so that the moving contact is closed or disconnected with the static contact along the X-axis direction; Its characteristics are: One of the fixed part and the movable part is provided with a slide groove, and the other of the two is provided with a guide portion; the slide groove extends along the X-axis direction, and the guide portion extends into the slide groove along the Y-axis direction and slides in cooperation with the slide groove along the X-axis direction; At least one guide portion is a first guide portion, and both sides of the first guide portion along the Z-axis direction are provided with interference portions suitable for abutting against the side groove wall of the slide groove along the Z-axis direction, and both sides of the interference portion along the X-axis direction are adjacent to the correcting portion, and the correcting portion forms a first projection on a first projection plane perpendicular to the Y-axis direction, and the outer edge of the first projection is a convex curve and its curvature radius is greater than half of the size of the first guide portion along the Z-axis direction.

2. A relay as claimed in claim 1, characterized in that: At least one first guide portion forms a second projection on the first projection plane, and the second projection is an ellipse whose major axis extends along the X-axis direction.

3. A relay as claimed in claim 2, characterized in that: The first guide portion is in an ellipsoidal shape.

4. A relay as claimed in claim 2, characterized in that: The first guide portion is in an elliptical cylinder shape.

5. A relay as claimed in claim 1, characterized in that: The abutting portion is a plane perpendicular to the Z-axis direction.

6. A relay as claimed in claim 1, characterized in that: The guiding part has only the second guiding part except the first guiding part. The second guiding part forms a third projection on the first projection plane, and the third projection is circular.

7. A relay as claimed in claim 1, characterized in that: At least one slide groove is a first slide groove, and a protrusion is provided at the bottom of the first slide groove. The protrusion protrudes from the bottom of the groove along the Y-axis direction and extends along the X-axis direction.

8. A relay as claimed in claim 7, characterized in that: Concave portions are arranged between the protrusion of the first sliding groove and the side groove walls on both sides.

9. A relay as claimed in claim 7, characterized in that: The number of the first sliding grooves is at least two, and the openings of at least two first sliding grooves are facing or away from each other along the Y-axis direction.

10. A relay as claimed in claim 9, characterized in that: At least two first sliding grooves with openings facing or away from each other along the Y-axis direction are arranged along the Y-axis direction.

11. A relay according to any one of claims 1 to 10, characterized in that: The fixed part includes a receiving member and a static contact member group fixed to each other, the static contact member group includes two static contacts, the static contacts are formed on the static contacts, and the static contacts of the two static contacts are arranged along the Z-axis direction; The moving contact part includes a moving contact member group, a pushing member, an elastic bracket group and a limiting member; the moving contact member group includes a moving contact member, and the moving contact member is provided with two moving contacts along the Z-axis direction, and the two moving contacts are suitable for closing or disconnecting with the static contacts of the corresponding static contact member along the X-axis direction; the pushing member moves along the X-axis direction to drive the moving contact to close or disconnect with the static contact along the X-axis direction; the elastic bracket group is installed between the pushing member and the moving contact member group along the X-axis direction; the limiting member is fixed relative to the pushing member, and abuts against the moving contact member along the disconnection direction when the moving contact is disconnected from the static contact; One of the accommodating member and the moving contact portion is provided with a slide groove, and the other one of the two is provided with a guide portion; at least one guide portion is arranged on the limiting member, and the guide portion arranged on the limiting member is called a proximal guide portion.

12. A relay as claimed in claim 11, characterized in that: The proximal guide portion is the first guide portion.

13. A relay as claimed in claim 11 or 12, characterized in that: At least two proximal guide portions are arranged along the Z-axis direction.

14. A relay as claimed in claim 11 or 12, characterized in that: At least two proximal guide portions are arranged along the Y-axis direction and extend into corresponding slide grooves away from each other along the Y-axis direction.

15. A relay as claimed in claim 14, characterized in that: There are two proximal guide parts, and the two proximal guide parts are centrally located between the two moving contacts along the Z-axis direction.

16. A relay as claimed in claim 11, characterized in that: The moving contact part also includes a connecting piece, which is integrally formed by injection molding with the pushing piece insert; the connecting piece extends along the Y-axis direction, and its two ends respectively extend out of the pushing piece to form two connecting ends; the limiting piece is also provided with a limiting body fixedly connected to the first guide portion, and the limiting body is provided with a limiting portion and two connecting portions which are connected to each other as a whole, and the limiting portion is suitable for abutting the moving contact piece along the disconnecting direction, and the two connecting portions respectively extend from the two ends of the limiting portion along the Y-axis direction along the disconnecting direction and are fixedly connected to the corresponding connecting ends, and the proximal guide portion extends from the connecting portion along the Y-axis direction.

17. A relay as claimed in claim 16, characterized in that: The material of the limiting part is metal, and the proximal guide part is stamped and formed at the connecting part.

18. A relay as claimed in claim 16, characterized in that: The material of the limiting body is metal, the material of the proximal guide part and the accommodating part are both plastic, and the proximal guide part and the limiting body insert are integrally formed by injection molding or bonded or screwed.

19. A relay as claimed in claim 11, characterized in that: At least one guide portion is disposed on the pushing member, and the guide portion disposed on the pushing member is called a distal guide portion.

20. A relay as claimed in claim 19, characterized in that: The distal guide portion is the first guide portion.

21. A relay as claimed in claim 19, characterized in that: At least one proximal guide portion and one distal guide portion extend into corresponding slide grooves away from each other along the Y-axis direction.

22. A relay according to any one of claims 19 to 21, characterized in that: At least two distal guides are arranged along the Z-axis direction.

23. A relay according to any one of claims 19 to 21, characterized in that: At least two distal guide portions are arranged along the Y-axis direction and extend into corresponding slide grooves away from each other along the Y-axis direction.

24. A relay as claimed in claim 23, characterized in that: There are two distal guide parts, and the two distal guide parts are centrally located between the two moving contacts along the Z-axis direction.

25. A relay as claimed in claim 11, characterized in that: The guide portion includes two precision-fitting guide portions, which are arranged along the Y-axis direction and extend into the corresponding slide grooves away from each other along the Y-axis direction. The fitting clearance formed by the precision-fitting guide portion and the corresponding slide groove along the Z-axis direction is smaller than the fitting clearance formed by the non-precision-fitting guide portion and the corresponding slide groove along the Z-axis direction.

26. A relay as claimed in claim 25, characterized in that: The precision-matching guide portion is the first guide portion.

27. A relay as claimed in claim 26, characterized in that: The precision fit guide is the proximal guide.

28. A relay as claimed in claim 27, characterized in that: The precision fit guide is centrally located between the two moving contacts along the Z-axis direction.

29. A relay according to any one of claims 25 to 28, characterized in that: The two non-precision matching guide parts are arranged along the Y-axis direction and extend into the corresponding slide grooves away from each other along the Y-axis direction; the matching clearance between the two non-precision matching guide parts arranged along the Y-axis direction and the corresponding slide grooves along the Y-axis direction is smaller than the matching clearance between the two precision matching guide parts and the corresponding slide grooves along the Y-axis direction.

30. A relay as claimed in claim 11, characterized in that: It also includes a magnetic circuit part, which includes: an armature assembly, which is fixedly connected to the pusher and includes a permanent magnet and two armatures, the two armatures are respectively fixedly connected to two magnetic poles of the permanent magnet, and the projections of the two armatures on the first projection plane intersect each other; and The coil assembly is provided with two magnetic drive ends, which are arranged along the Z-axis direction. The coil assembly is excited by the pulse electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, so as to switch and attract different positions of the two armatures in the X-axis direction and drive the armature assembly to move along the X-axis direction.

31. A relay as claimed in claim 30, characterized in that: The armature assembly and the pusher insert are integrally formed by injection molding.

32. A relay as claimed in claim 30, characterized in that: Each armature is provided with two suction parts, and the two suction parts are arranged corresponding to the two magnetic driving ends, and the suction parts are suitable for suctioning the corresponding magnetic driving ends along the X-axis direction.

33. A relay as claimed in claim 32, characterized in that: The two armatures are respectively a first armature and a second armature, the two suction parts of the first armature are respectively a first suction part and a second suction part, and the two suction parts of the second armature are respectively a third suction part and a fourth suction part; The armature assembly moves between a first position and a second position along the X-axis direction; in the first position, the first suction part and the third suction part respectively suction the two magnetic drive ends to disconnect the moving contact group from the static contact group; in the second position, the fourth suction part and the second suction part respectively suction the two magnetic drive ends to close the moving contact group from the static contact group.

34. An electric meter, characterized in that: It comprises a relay as claimed in any one of claims 1 to 33.

Images