Relay

Abstract

The utility model provides a relay which comprises a shell, a magnetic circuit assembly and a contact assembly. The magnetic circuit assembly is arranged on the shell; the contact assembly comprises a movable contact piece and two static contact pieces, the movable contact piece comprises a movable contact bridge, the movable contact bridge extends in the first direction, movable contacts are arranged at the two ends of the movable contact bridge in the first direction respectively, the two static contact pieces are each provided with a static contact and a load connecting part, and the two load connecting parts are located on the same side of the movable contact bridge in the first direction. The static contacts of the two static contact pieces are respectively arranged corresponding to the two movable contacts arranged on the movable contact bridge; wherein one of the two static contact elements, which corresponds to the movable contact, which is far away from the load connecting part along the first direction, is a first static contact element, and the first static contact element is provided with a first over-current part; when the two movable contacts and the corresponding static contacts are closed, at least part of the first overcurrent part is located on the side, away from the static contacts, of the movable contact bridge, and the overcurrent direction of the first overcurrent part is opposite to the overcurrent direction of the movable contact bridge.

Description

Technical Field

[0001] The present disclosure relates to a relay. Background Art

[0002] In the existing design scheme of the relay, when the moving contact adopts a bridge structure, moving contacts are respectively provided at both ends of the moving contact bridge. When a large current is carried by the load or there is a fault current, there is a repulsive effect between the two sets of moving and static contacts of the contact assembly of this scheme. Compared with the scheme in which the contact assembly has only a single set of moving and static contacts, higher requirements are placed on the short-circuit resistance performance of the relay. Utility Model Content

[0003] A main purpose of the present disclosure is to overcome at least one defect of the above-mentioned prior art and provide a relay with strong short-circuit resistance. Furthermore, the relay can also facilitate external connection and save copper consumption.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0005] According to one aspect of the present disclosure, a relay is provided, which includes a housing, a magnetic circuit component, and a contact component; the magnetic circuit component is arranged on the housing; the contact component includes a moving contact and two static contacts, the moving contact includes a moving contact bridge, the moving contact bridge extends along a first direction, and the two ends of the moving contact bridge in the first direction are respectively provided with moving contacts, the two static contacts are both provided with static contacts and load connecting parts, the two load connecting parts are both located on the same side of the moving contact bridge in the first direction, and the static contacts of the two static contacts are arranged corresponding to the two moving contacts of the moving contact bridge; wherein, among the two static contacts, the one corresponding to the moving contact away from the load connecting part along the first direction is a first static contact, and the first static contact is provided with a first current-passing part; when the two moving contacts are closed with the corresponding static contacts, the first current-passing part is at least partially located on the side of the moving contact bridge away from the static contact, and the current-passing direction of the first current-passing part is opposite to the current-passing direction of the moving contact bridge.

[0006] According to one of the embodiments of the present disclosure, along the first direction, the first current passing portion is at least partially located between the moving contacts at both ends of the moving contact bridge.

[0007] According to one embodiment of the present disclosure, the arrangement direction of the moving contact and the corresponding static contact is a second direction, which is perpendicular to the first direction; the first current passing portion is located between the inner wall of the shell and the moving contact along a third direction, which is perpendicular to the first direction and perpendicular to the second direction.

[0008] According to one embodiment of the present disclosure, the first flow portion is arranged parallel to a first plane, and the first plane is perpendicular to the third direction.

[0009] According to one embodiment of the present disclosure, the shell has a bottom plate and a top cover, and the bottom plate and the top cover are arranged at intervals along the third direction; wherein, the first static contact also has a first fixed portion, a first bent portion and a first load connecting portion, the first fixed portion is arranged on the shell, the first fixed portion is used to set the static contact, one end of the first current flowing portion is connected to the first fixed portion, in the third direction, the first current flowing portion is located in the area between the top cover and the moving contact, one end of the first load connecting portion is connected to the other end of the first current flowing portion via the first bent portion, and along the third direction perpendicular to the first direction and perpendicular to the second direction, the first load connecting portion is closer to the bottom plate than the first current flowing portion.

[0010] According to one embodiment of the present disclosure, the first load connecting portion is arranged parallel to the first plane, the first bending portion is arranged parallel to a second plane, and the second plane is perpendicular to the first direction.

[0011] According to one of the embodiments of the present disclosure, wherein: the outer shell has a side wall perpendicular to the bottom plate, the side wall includes a first side wall, the first bent portion is arranged parallel to the first side wall and is located on the outer side of the first side wall; and / or, an accommodating groove is provided on the outer surface of the first side wall, and the accommodating groove is suitable for accommodating the first bent portion.

[0012] According to one of the embodiments of the present disclosure, wherein: the magnetic circuit assembly cooperates with a push rod to drive the push rod to reciprocate along the second direction, and in the first direction, the push rod is located in the middle of the moving contact bridge; wherein the first current passing part is arranged across the push rod along the first direction; and / or a mutual inductor is arranged on the first load connecting part.

[0013] According to one embodiment of the present disclosure, of the two static contacts, the one corresponding to the moving contact close to the load connecting part along the first direction is a second static contact, the second static contact has a second fixed portion, a second current flowing portion, a second bending portion and a second load connecting portion, the second fixed portion is arranged on the housing and is located on the side of the moving contact bridge away from the first current flowing portion along the second direction, the second fixed portion is used to set the static contact, one end of the second current flowing portion is connected to the second fixed portion, and the second load connecting portion is connected to the other end of the second current flowing portion via the second bending portion.

[0014] According to one of the embodiments of the present disclosure, wherein: the second load connecting portion is arranged parallel to the first plane, at least a portion of the second current flowing portion is arranged parallel to a third plane, and the third plane is perpendicular to the second direction; the second bending portion is arranged parallel to the second plane; and / or, along the third direction, the first load connecting portion and the second load connecting portion are arranged at the same height.

[0015] According to one embodiment of the present disclosure, the arrangement direction of the moving contact and the corresponding static contact is a second direction, and the second direction is perpendicular to the first direction; wherein the moving contact piece includes at least two moving contact bridges, and the contact assembly includes at least two pairs of static contacts, at least two moving contact bridges are arranged along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction, at least two pairs of static contacts are arranged along the third direction, and are arranged one-to-one with at least two moving contact bridges, and the two static contacts of the same pair are respectively arranged on the two static contacts.

[0016] According to one embodiment of the present disclosure, the relay also includes an anti-short circuit structure; the anti-short circuit structure includes a first magnetic conductor and a second magnetic conductor, the first magnetic conductor is fixed relative to the housing, the second magnetic conductor is fixed corresponding to the moving contact bridge, and the first magnetic conductor and the second magnetic conductor are respectively located on both sides of the moving contact bridge in a second direction, the second direction is the arrangement direction of the moving contact and the corresponding static contact, the second direction is perpendicular to the first direction, and the anti-short circuit structure is suitable for resisting the electric repulsion generated between the moving contact and the static contact due to the flow of large fault current.

[0017] According to one of the embodiments of the present disclosure, wherein: the relay is a single-phase relay, and the single-phase relay includes a group of the contact components; or, the relay is a multi-phase relay, and the multi-phase relay includes at least two groups of the contact components, and each group of the contact components is arranged at intervals along a second direction, and the second direction is the arrangement direction of the moving contacts and the corresponding static contacts, and the second direction is perpendicular to the first direction.

[0018] According to one embodiment of the present disclosure, the relay is a three-phase relay, and the three groups of contact components are respectively a first group, a second group and a third group arranged sequentially along the second direction; along the second direction, the distance between the moving contact of the first group and the moving contact of the second group is greater than the distance between the moving contact of the second group and the moving contact of the third group; wherein, the relay includes a magnetic circuit component, the magnetic circuit component cooperates with a push rod to drive the push rod to reciprocate along the second direction, and the magnetic circuit component is located between the first group and the second group.

[0019] According to one of the embodiments of the present disclosure, wherein: along the second direction, three first load connection parts are arranged at equal intervals, and the intervals between each first load connection part and the adjacent second load connection part are equal; and / or, the arrangement direction of the moving contact and the corresponding static contact is the second direction, and the second direction is perpendicular to the first direction; wherein the housing has two second side walls spaced apart along the second direction and both perpendicular to the second direction; wherein, along the second direction, of the two load connection parts located at both ends, at least one does not extend beyond the second side wall adjacent to it.

[0020] It can be seen from the above technical solution that the advantages and positive effects of the relay proposed in the present disclosure are:

[0021] 1. The relay proposed in the present invention includes a housing, a magnetic circuit component, and a contact component; the magnetic circuit component is arranged on the housing; the contact component includes a moving contact and two static contacts, the moving contact includes a moving contact bridge, the moving contact bridge extends along a first direction, and the two ends of the moving contact bridge in the first direction are respectively provided with moving contacts, the two static contacts are both provided with static contacts and load connecting parts, the two load connecting parts are both located on the same side of the moving contact bridge in the first direction, and the static contacts of the two static contacts are respectively arranged corresponding to the two moving contacts of the moving contact bridge; wherein, among the two static contacts, the one corresponding to the moving contact away from the load connecting part in the first direction is the first static contact, and the first static contact is provided with a first current-passing part; when the two moving contacts are closed with the corresponding static contacts, the first current-passing part is at least partially located on the side of the moving contact bridge away from the static contact, and the current-passing direction of the first current-passing part is opposite to the current-passing direction of the moving contact bridge. Through the above design, the present invention can place the first current-passing portion provided by the first static contact at least partially behind the closed position of the moving contact, so as to provide an anti-short-circuit structural effect. Specifically, when a large fault current is passed through the contact assembly, the current-passing direction of the first current-passing portion is opposite to that of the moving contact bridge. The magnetic field generated by the current passing through the first current-passing portion can generate a repulsive force on the moving contact bridge toward the static contact point, thereby strengthening the contact pressure and preventing it from being disconnected when it is impacted by a large fault current.

[0022] In addition, since the load connection parts of the two static contacts are extended to the same side of the moving contact bridge along the first direction, they can be connected to the external load more conveniently. Moreover, the present disclosure also utilizes the characteristic that one of the static contacts must extend along the first direction toward the side where the other static contact is located to set the first current passing part and improve the short-circuit resistance of the contact assembly. The structure is reasonably utilized, avoiding the need to set up another structure for short-circuit resistance, saving materials and avoiding structural complexity.

[0023] 2. In one embodiment of the present disclosure, at least part of the first overcurrent portion is arranged to be located between the two moving contacts of the moving contact bridge along the first direction, so as to ensure that the part of the first static contact member used to provide anti-short circuit (the first overcurrent portion) is located between the two moving contacts at least in the first direction, so that the part of the moving contact bridge between the two moving contacts where the current flows can obtain the electromagnetic repulsion from the first overcurrent portion, thereby further ensuring the anti-short circuit performance.

[0024] 3. Since the magnetic circuit assembly usually requires a pushing structure to drive the moving contact to move, the pushing structure generally corresponds to the moving contact in the third direction. In one embodiment of the present disclosure, by setting the first current-passing portion to be located between the inner wall of the shell and the moving contact along the third direction, the first current-passing portion and the pushing structure do not need to avoid each other, thereby ensuring that the structural strength of the pushing structure is not affected, while ensuring that the current-carrying cross-sectional area of ​​the first current-passing portion is not affected and can better provide the ability to resist electromagnetic repulsion.

[0025] 4. In one embodiment of the present disclosure, the first current passing portion is arranged parallel to the first plane, thereby preventing the first current passing portion from occupying too much space of the housing in the third direction, which is beneficial to the miniaturized design of the relay.

[0026] 5. In one embodiment of the present disclosure, the first static contact has a first fixed portion, a first current passing portion, a first bending portion and a first load connecting portion, the first fixed portion is arranged on the housing, the first fixed portion is used to set the static contact, one end of the first current passing portion is connected to the first fixed portion, the first current passing portion is located in the area between the top cover of the housing and the moving contact in the third direction, one end of the first load connecting portion is connected to the other end of the first current passing portion via the first bending portion, and along the third direction perpendicular to the first direction and perpendicular to the second direction, the first load connecting portion is closer to the bottom plate of the housing than the first current passing portion. Through the above design, the present invention can utilize the first bending portion to position the first load connecting portion close to the bottom plate in the third direction, thereby avoiding the lead-out portion of the first static contact being too close to the top cover of the shell, and is further suitable for arranging the lead-out portion of the first static contact in the middle area of ​​the shell along the third direction, thereby optimizing the connection effect of the relay; in addition, arranging the first current-carrying portion between the top cover and the moving contact along the third direction can avoid interference with other structures installed on the bottom plate, and can also reduce the bending path for docking with the first bending portion and the first load connecting portion located outside the shell, thereby saving materials.

[0027] 6. In one embodiment of the present disclosure, the contact assembly includes at least two moving contact bridges and at least two pairs of static contacts, at least two moving contact bridges are arranged along a third direction, the third direction is perpendicular to the first direction and perpendicular to the second direction, at least two pairs of static contacts are arranged along the third direction, and are arranged one-to-one with at least two moving contact bridges, and two static contacts of the same pair are respectively arranged on two static contact pieces. Through the above design, the present disclosure can realize the design of multiple moving contact pieces for the moving contact piece, while ensuring the realization of a large contact gap, so that the contact resistance can be reduced by using a plurality of moving contact bridges in parallel to meet the performance requirements, and at the same time, when the four groups of contacts are subjected to high current and voltage loads, they play the role of voltage division in the series structure and current diversion in the parallel structure, reducing the load of the contacts and improving the performance reliability.

[0028] 7. In one embodiment of the present disclosure, the moving contact also includes an anti-short circuit structure; the anti-short circuit structure includes a first magnetic conductor and a second magnetic conductor, the first magnetic conductor is connected to the housing, the second magnetic conductor is connected to the moving contact bridge, and the first magnetic conductor and the second magnetic conductor are respectively located on both sides of the moving contact bridge in the second direction, the second direction is the arrangement direction of the moving contact and the corresponding static contact, the second direction is perpendicular to the first direction, and the anti-short circuit structure is suitable for resisting the electric repulsion between the moving contact and the static contact due to the flow of the short circuit current. Through the above design, when a large fault current passes through the moving contact bridge, a closed magnetic circuit is formed between the first magnetic conductor and the second magnetic conductor and an electromagnetic attraction is generated, and the electromagnetic attraction can resist the electric repulsion between the moving contact and the static contact due to the flow of the large fault current, ensuring that the moving contact and the static contact do not bounce open. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various objects, features and advantages of the present disclosure will become more apparent by considering the following detailed description of preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:

[0030] Figure 1 is a schematic diagram of a three-dimensional structure of a relay according to an exemplary embodiment;

[0031] Figure 2 yes Figure 1 A three-dimensional exploded schematic diagram of a relay is shown;

[0032] Figure 3 yes Figure 1 A three-dimensional schematic diagram of a partial structure of a relay is shown;

[0033] Figure 4 yes Figure 3 A top view of

[0034] Figure 5 yes Figure 4An enlarged schematic diagram of part A in FIG.

[0035] Figure 6 yes Figure 3 A schematic diagram of the three-dimensional structure of three groups of lead-out plates is shown;

[0036] Figure 7 yes Figure 6 A top view of

[0037] Figure 8 yes Figure 1 A top view of a partial structure of a relay is shown;

[0038] Fig. 9 yes Figure 8 An enlarged schematic diagram of part B in FIG.

[0039] Fig.10 and Fig.11 They are schematic diagrams of the three-dimensional structure of the moving contact at two different viewing angles;

[0040] Fig.12 yes Figure 1 A schematic diagram of the three-dimensional structure of the contact assembly of the relay shown;

[0041] Fig.13 yes Fig.12 A top view of

[0042] Fig.14 is along Fig.13 The cross-sectional view made by the straight line CC in;

[0043] Fig.15 is a schematic plan view of a relay according to another exemplary embodiment.

[0044] The following are the descriptions of the reference numerals:

[0045] 100. Shell;

[0046] 110. First side wall;

[0047] 120. Bottom plate;

[0048] 130. Top cover;

[0049] 140. Second side wall;

[0050] 300. Push rod;

[0051] 410. Moving contact;

[0052] 411. Moving contact;

[0053] 412. Dynamic touch bridge;

[0054] 413. Anti-short circuit structure;

[0055] 4131. The first magnetic conductor;

[0056] 4132. Second magnetic conductor;

[0057] 420.Static contact;

[0058] 430. Second static contact;

[0059] 431. The second flow portion;

[0060] 432. Second load connection portion;

[0061] 433. Second bending portion;

[0062] 440. A first static contact;

[0063] 441. The first flow portion;

[0064] 442. First bending portion;

[0065] 443. A first load connection portion;

[0066] 451. First fixing part;

[0067] 452. Second fixing part;

[0068] 460. Mutual inductor;

[0069] X. Second direction;

[0070] Y. First direction;

[0071] Z. Third direction. DETAILED DESCRIPTION

[0072] Typical embodiments that embody the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various changes in different embodiments without departing from the scope of the present disclosure, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present disclosure.

[0073] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part of the present disclosure and in which different exemplary structures, systems and steps that can implement multiple aspects of the present disclosure are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present disclosure. Moreover, although the terms "above", "between", "within", etc. may be used in this specification to describe different exemplary features and elements of the present disclosure, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present disclosure.

[0074] See also Figure 1 , which is a representative diagram of the three-dimensional structure of the relay proposed in the present disclosure. In this exemplary embodiment, the relay proposed in the present disclosure is described by taking a three-phase relay as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design of the present disclosure to other types of relays, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the relay proposed in the present disclosure.

[0075] Related References Figures 2 to 11 , Figure 2 A three-dimensional exploded schematic diagram of a relay is representatively shown in FIG. Figure 3 , which is a representative three-dimensional structural diagram of a partial structure of a relay, wherein the top cover 130 is hidden; Figure 4 Representatively shown in Figure 3 A top view of Figure 5 A representative example is shown in Figure 4 An enlarged schematic diagram of part A in FIG. Figure 6 A three-dimensional structural schematic diagram of three groups of lead-out plates is representatively shown in FIG. Figure 7 Representatively shown in Figure 6 A top view of Figure 8 , a top view of a partial structure of the relay is representatively shown, wherein a partial structure of the fixing frame 600 and the first static contact 440 is further hidden; Fig. 9 Representatively shown in Figure 8 An enlarged schematic diagram of part B in FIG. Figure 8 Figure 7 Fig. 9 Figure 6 Fig.10 and Fig.11 Schematic diagrams of the three-dimensional structure of the moving contact 410 at two different viewing angles are representatively shown; Fig.12 A three-dimensional structural schematic diagram of a contact assembly is representatively shown in FIG.

[0076] Fig.13 Representatively shown in Fig.12 A top view of Fig.14 The representative diagram shows the Fig.13 The following will describe in detail the structure, connection mode and functional relationship of the main components of the relay proposed in the present disclosure in combination with the above-mentioned drawings.

[0077] like Figures 1 to 14 As shown, in one embodiment of the present disclosure, the relay proposed in the present disclosure includes a housing 100, a magnetic circuit assembly and a contact assembly. The contact assembly includes a moving contact 410 and two static contacts. The moving contact 410 includes a moving contact bridge 412. The moving contact bridge 412 extends along the first direction X. The two ends of the moving contact bridge 412 in the first direction X are respectively provided with moving contacts 411. Both static contacts are provided with a static contact 420 and a load connection portion. The two load connection portions are used to electrically connect to an external load. They are both located on the same side of the moving contact bridge 412 in the first direction X. The static contacts 420 of the two static contacts are arranged corresponding to the two moving contacts 411 of the moving contact bridge 412. Among them, one of the two static contacts corresponding to the moving contact away from the load connection portion in the first direction X is a first static contact, and the first static contact is provided with a first current passing portion 441. When the two moving contacts 411 are closed with the corresponding static contacts 420, the first current-passing portion 441 is at least partially located on the side of the moving contact bridge 412 away from the static contact 420, and the current-passing direction of the first current-passing portion 441 is opposite to the current-passing direction of the moving contact bridge 412 (see Fig.13 Through the above design, the present disclosure can place the first current-passing portion 441 provided on the first static contact at least partially behind the closed position of the moving contact 410, so as to provide an anti-short circuit structure effect. Specifically, when a large fault current flows into the contact assembly, the current-passing direction of the first current-passing portion 441 is opposite to that of the moving contact bridge 412, and the magnetic field generated by the current flowing through the first current-passing portion 441 can generate a repulsive force on the moving contact bridge 412 toward the static contact 420 (see Fig.13 The force direction indicated by the dotted arrow in the figure) is used to strengthen the contact pressure and prevent it from being disconnected when it is impacted by a large fault current. In addition, in one embodiment of the present disclosure, since the load connection parts of the two static contacts extend to the same side of the moving contact bridge 412 along the first direction X, it is more convenient to connect to the external load. In addition, the present disclosure also utilizes the characteristic that one of the static contacts must extend along the first direction toward the side where the other static contact is located to set the first current passing part 441 and improve the short-circuit resistance of the contact assembly. The structure is reasonably utilized, avoiding the need to set up an additional structure for short-circuit resistance, saving materials and avoiding structural complexity.

[0078] like Figure 4 As shown, in one embodiment of the present disclosure, the first direction X may be parallel to the bottom plate 120 of the housing 100 . On this basis, the second direction Y described below may be parallel to the bottom plate 120 , and the third direction Z described below may be perpendicular to the bottom plate 120 .

[0079] like Figure 5 , Fig.12 and Fig.13 As shown, in one embodiment of the present disclosure, along the first direction X, the first current-passing portion 441 is at least partially located between the moving contacts 411 at both ends of the moving contact bridge 412. Through the above design, the present disclosure can ensure that the portion of the first static contact 440 used to provide short-circuit resistance (such as the first current-passing portion 441) is at least located between the two moving contacts 411 in the first direction X, so that the current-flowing portion of the moving contact bridge 412 located between the two moving contacts 411 can obtain the electromagnetic repulsion force from the first current-passing portion 441, thereby further ensuring the short-circuit resistance performance.

[0080] like Figure 2 and Figure 3 As shown, in one embodiment of the present disclosure, the arrangement direction of the moving contact 411 and the corresponding static contact 420 is the second direction Y, and the second direction Y is perpendicular to the first direction X. On this basis, the first flow portion 441 is located between the inner wall of the housing 100 and the moving contact 410 along the third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y. Through the above design, since the magnetic circuit assembly usually needs to drive the moving contact 410 to move through a pushing structure (such as a pushing rod 300), the pushing structure generally corresponds to the moving contact 410 in the third direction Z. In one embodiment of the present disclosure, by setting the first flow portion 441 to be located between the inner wall of the housing 100 and the moving contact 410 along the third direction Z, the first flow portion 441 and the pushing structure do not need to avoid each other, thereby ensuring that the structural strength of the pushing structure is not affected, while ensuring that the current-carrying cross-sectional area of ​​the first flow portion 441 is not affected and can better provide the ability to resist electromagnetic repulsion.

[0081] like Figure 6 , Figure 7 , Fig.12 and Fig.13 As shown, in one embodiment of the present disclosure, the first current passing portion 441 is arranged parallel to the first plane, and the first plane is perpendicular to the third direction Z. Through the above design, the present disclosure can avoid the first current passing portion 441 from occupying too much space of the housing 100 in the third direction Z, which is conducive to the miniaturization design of the relay.

[0082] like Figures 3 to 6As shown, in one embodiment of the present disclosure, the housing 100 has a bottom plate 120 and a top cover 130, and the bottom plate 120 and the top cover 130 are arranged at intervals along the third direction Z. On this basis, the first static contact 440 may further have a first fixed portion 451, a first bent portion 442, and a first load connecting portion 443. The first flow portion 441, the first fixed portion 451, the first bent portion 442, and the first load connecting portion 443 are all in the shape of a flat plate. The first fixed portion 451 is disposed in the housing 100, and the first fixed portion 451 is used to set the static contact 420. The first flow portion 441 is disposed in the housing 100, and one end of the first flow portion 441 along the first direction X is connected to the first fixing portion 451. In the third direction Z, the first flow portion 441 is located in the area between the top cover 130 and the moving contact 410. The first load connecting portion 443 extends along the first direction X, and one end thereof is connected to the other end of the first flow portion 441 along the first direction X via the first bending portion 442; along the third direction Z perpendicular to the first direction X and perpendicular to the second direction Y, the first load connecting portion 443 is closer to the bottom plate 120 of the housing 100 than the first flow portion 441. Through the above design, since the first current-passing portion 441 is located in the area between the top cover 130 and the moving contact 410, the first current-passing portion 441 is closer to the top cover 130 than the moving contact 410. The present disclosure can utilize the first bending portion 442 to move the position of the first load connecting portion 443 away from the top cover 130 and closer to the bottom plate 120 in the third direction Z, thereby avoiding the lead-out portion of the first static contact 440 (such as the first load connecting portion 443) from being too close to the top cover 130, and is further suitable for arranging the lead-out portion of the first static contact 440 in the middle area of ​​the housing 100 along the third direction Z, thereby optimizing the connection effect of the relay.

[0083] like Figure 3 and Figure 4 As shown, in one embodiment of the present disclosure, the first load connection portion 443 can be arranged parallel to the first plane. And, the first bend portion 442 can be arranged parallel to the second plane, and the second plane is perpendicular to the first direction X. Accordingly, the first flow portion 441 is connected to the side edge of the first bend portion 442 extending along the second direction Y, and the first load connection portion 443 is connected to the other side edge of the first bend portion 442 extending along the second direction Y. Through the above design, the present disclosure can realize the horizontal arrangement of the first flow portion 441 (i.e., arranged parallel to the bottom plate 120), thereby avoiding excessive occupation of the space of the housing 100 in the third direction Z, which is conducive to the miniaturized design of the relay.

[0084] In one embodiment of the present disclosure, the housing 100 has a side wall perpendicular to the bottom plate 120, such as Figure 4 and Figure 6As shown, the side wall includes a first side wall 110 , and the first bending portion 442 may be arranged parallel to the first side wall 110 , and the first bending portion 442 is located on the outer side of the first side wall 110 .

[0085] In one embodiment of the present disclosure, a receiving groove may be provided on the outer surface of the first side wall 110, and the receiving groove is suitable for receiving at least part of the first bent portion 442. It should be noted that in this embodiment, a three-phase relay is used as an example, that is, the relay includes three groups of contact components and further includes three first bent portions 442, wherein only a part of the first bent portions 442 may be respectively received in the receiving grooves, for example Figure 4 The two first bent portions 442 shown on the left are partially accommodated in the accommodating grooves. Of course, at least one or all of the first bent portions 442 may be accommodated in the accommodating grooves. Figure 3 ), the present disclosure enables the mutual inductor 460 to be arranged closer to the first side wall 110 of the housing 100, thereby further ensuring the saving of copper loss.

[0086] like Figure 4 As shown, in one embodiment of the present disclosure, the magnetic circuit assembly is disposed in the housing 100, and the magnetic circuit assembly cooperates with a push rod 300 to drive the push rod 300 to reciprocate along the second direction Y. In the first direction X, the push rod 300 is located in the middle of the moving contact bridge 412. On this basis, the first flow portion 441 is arranged across the push rod 300 along the first direction X. For example, the first flow portion 441 and the push rod 300 can be arranged at intervals in the third direction Z. For another example, the edge of the push rod 300 in the third direction Z can be provided with an avoidance groove, and the avoidance groove penetrates the push rod 300 along the first direction X, so as to allow the first flow portion 441 to pass through. The width of the avoidance groove in the second direction Y can be greater than the width of the first flow portion 441, so as to meet the requirement that the push rod 300 will not cause structural interference with the first flow portion 441 when reciprocating along the second direction Y. For another example, the push rod 300 may be provided with an avoidance window, which penetrates the push rod 300 along the first direction X so as to allow the first flow portion 441 to pass through. The width of the avoidance window in the second direction Y may be greater than the width of the first flow portion 441, so as to ensure that the push rod 300 does not generate structural interference with the first flow portion 441 when reciprocating along the second direction Y. In addition, the first flow portion 441 may also partially extend from the housing 100, for example, partially extend from the housing 100 along the third direction Z, and is not limited to the above-mentioned embodiment.

[0087] like Figures 1 to 3As shown, in one embodiment of the present disclosure, a mutual inductor 460 may be provided on the first load connection portion 443 of the first static contact 440, so as to convert a large current into a small current for measurement, protect power equipment, control the power system and monitor power quality. Based on this, in this embodiment, the first current-passing portion 441 is provided on the side of the moving contact bridge 412 away from the static contact 420, which is conducive to creating conditions for the first load connection portion 443 and another load connection portion to be arranged at intervals along the second direction Y, and enables the first load connection portion 443 to have a suitable space in the second direction Y for the installation of the mutual inductor 460. The second direction Y is the movement direction of the moving contact 410 and the push rod 300. The space in this direction is more abundant than the space in other directions. Therefore, the mutual inductor 460 is arranged along this direction, and the space utilization is more reasonable, and it will not cause too much space to be occupied in other directions, which is conducive to the miniaturization design of the relay.

[0088] like Figures 3 to 7 As shown, in one embodiment of the present disclosure, of the two static contacts, one corresponding to the moving contact 411 close to the load connection portion along the first direction X is a second static contact, and the second static contact 430 may have a second fixed portion 452, a second flow portion 431, a second bending portion 433 and a second load connection portion 432, all of which are flat. The second fixed portion 452 is arranged on the housing 100 and is located on the side of the moving contact bridge 412 away from the first flow portion 441 along the second direction Y. The second fixed portion 452 is used to set the static contact 420. One end of the second flow portion 431 is connected to the second fixed portion 452, and the second load connection portion 432 is connected to the other end of the second flow portion 431 via the second bending portion 433. On this basis, the second load connection portion 432 can be arranged parallel to the first plane, and at least a portion of the second current-passing portion 431 can be arranged parallel to a third plane, the third plane being perpendicular to the second direction Y, and the second bending portion 433 can be arranged parallel to the second plane, thereby leaving more space in the second direction Y for the first load connection portion 443 to be used for the installation of the mutual inductor. It should be noted that the present embodiment is described by taking a three-phase relay as an example, that is, the relay includes three groups of contact components and further includes three second current-passing portions 431, for example Figure 4 The two second flow-through portions 431 shown on the left are all arranged parallel to the first plane, and one second flow-through portion 431 on the right is partially arranged parallel to the first plane, while the other part is not arranged parallel to the first plane. Accordingly, the second flow-through portion 431 is connected to the edge of the second bending portion 433 extending along the third direction Z, and the second load connection portion 432 is connected to the edge of the second bending portion 433 extending along the second direction Y. Through the above design, the present disclosure can use the second bending portion 433 to realize the bending and leading out of the second static contact 430, meeting the connection requirements of the second static contact 430 after extending out of the housing 100.

[0089] like Figure 3 As shown, in one embodiment of the present disclosure, along the third direction Z, the second load connection portion 432 and the first load connection portion 443 can be arranged at the same height. Through the above structural design, the present disclosure can ensure that the arrangement heights of the load connection portions are the same, so that it can be more convenient to connect with the external load, and the connection effect is better.

[0090] like Figure 2 and Fig.10 As shown, in one embodiment of the present disclosure, the moving contact 410 may include at least two moving contact bridges 412 arranged along the third direction Z, such as but not limited to the two moving contact bridges 412 shown in the figure, and correspondingly, the contact assembly may include at least two pairs of static contacts 420 arranged along the third direction Z, such as but not limited to the two pairs of static contacts 420 shown in the figure, at least two pairs of static contacts 420 are arranged one-to-one with at least two moving contact bridges 412, and the two static contacts 420 of the same pair are respectively arranged on two static contacts (for example, respectively arranged on the first fixing portion 451 and the second fixing portion 452). Accordingly, taking the moving contact 410 including two moving contact bridges 412 as an example, the present disclosure enables the moving contact 410 to realize the design of a double moving contact, while ensuring the realization of a large contact gap, so that the contact resistance can be reduced by connecting multiple moving contact bridges 412 in parallel to meet the performance requirements, and at the same time, when the four groups of contacts are subjected to high current and voltage loads, they play the role of voltage division in the series structure and current shunting in the parallel structure, thereby reducing the load of the contacts and improving the performance reliability.

[0091] like Figure 2 and Figure 8As shown, in one embodiment of the present disclosure, the relay proposed in the present disclosure is a three-phase relay. Among them, the three-phase relay includes three groups of contact components, and the three groups of contact components are arranged at intervals along the second direction Y, that is, the housing 100 is provided with three pairs of static contacts 420, and the push rod 300 is connected with three moving contacts 410, and the three groups of moving contacts 410 are arranged at intervals along the second direction Y. The second direction Y is the arrangement direction of the moving contacts 411 and the corresponding static contacts 420, and the second direction Y is perpendicular to the first direction X. On this basis, the moving contacts 411 of the three groups of moving contacts 410 face the same side of the second direction Y. In other words, when the push rod 300 moves, the moving contacts 411 of the three groups of moving contacts 410 move synchronously toward or away from the corresponding static contacts 420, that is, the moving contacts 411 and the static contacts 420 of the three groups of contact components are synchronously closed or synchronously disconnected. In some embodiments, the relay proposed in the present disclosure may also be a two-phase relay, a four-phase relay or other multi-phase relays. In other words, in various possible embodiments consistent with the design concept of the present disclosure, the relay proposed in the present disclosure may be a multi-phase relay, and the multi-phase relay includes at least two groups of contact components 410, and each group of moving contacts 410 is arranged at intervals along the second direction Y. Furthermore, the relay proposed in the present disclosure may also be a single-phase relay, and the single-phase relay includes a group of contact components 410.

[0092] In one embodiment of the present disclosure, for ease of understanding and description, taking the relay as a three-phase relay as an example, three groups of contact components are defined as the first group, the second group and the third group, which are arranged sequentially along the second direction Y. On this basis, along the second direction Y, the distance between the moving contact 410 of the first group and the moving contact 410 of the second group is greater than the distance between the moving contact 410 of the second group and the moving contact 410 of the third group. The relay includes a magnetic circuit assembly, which cooperates with a push rod 300 to drive the push rod 300 to reciprocate along the second direction Y. The magnetic circuit assembly can be located between the first group and the second group. It should be noted that Figure 4 For example, the three groups of contact components are the first group, the second group and the third group from right to left along the second direction Y in the figure. In some embodiments, the first group, the second group and the third group can also be understood as Figure 4 The order of being arranged from left to right along the second direction is not limited to this implementation manner.

[0093] It should be noted that, since the spacing between the moving contact 410 of the first group and the moving contact 410 of the second group is larger, that is, the spacing between the static contact 420 of the first group and the static contact 420 of the second group is larger than the spacing between the static contact 420 of the second group and the static contact 420 of the third group. On this basis, in order to achieve the equal spacing arrangement of the lead-out parts of the three groups of contact components, in this embodiment, the partial structures of the two static contacts of the first group are bent and extended along the first direction toward the second group for a section, for example, the first bending portion 442 of the third group is extended along the first direction X toward the second group, thereby making the first flow-through portion 441 and the first load connecting portion 443 of the third group connected to different positions of the first bending portion 442 in the first direction X, respectively, and at the same time, the second flow-through portion 431 of the third group is partially extended along the first direction X toward the second group, thereby making the second fixing portion 452 of the third group staggered with the second load connecting portion 432 along the first direction X.

[0094] Based on the design that the magnetic circuit components are arranged between the first group and the second group with a larger spacing, in one embodiment of the present disclosure, along the second direction Y, the three first load connection parts 443 can be arranged at equal spacing, and the spacing between each first load connection part 443 and the adjacent second load connection part 432 is equal. At this time, in order to compensate for the spacing difference between the three groups of contact components, the specific structure of the first static contact 440 and the second static contact 430 can be adaptively adjusted. For example, the first static contact 440 (i.e. Figure 4 The first bending portion 442 of the first group of the second static contact member 430 and the second current-passing portion 431 of the first group of the second static contact member 430 extend in the second direction, thereby ensuring the above-mentioned equal spacing arrangement and ensuring that the first load connecting portion 443 of the first group can be connected to the adjacent housing side wall (such as Figure 4 A certain distance is set between the side wall 140 located on the right side of the housing, so that after the mutual inductor is installed in place on the first load connecting portion 443, it will not protrude from the right side wall of the housing or protrude as little as possible, so as to help reduce the size of the relay in the second direction Y.

[0095] like Figure 4 As shown, in one embodiment of the present disclosure, the housing has two second side walls 140 spaced apart along the second direction Y and perpendicular to the second direction Y. On this basis, along the second direction Y, at least one of the two load connection parts located at both ends does not exceed the second side wall 140 adjacent to it. Through the above design, the present disclosure can make the arrangement of the lead-out parts of each contact assembly more compact and reduce the space occupied.

[0096] like Figure 3As shown, in one embodiment of the present disclosure, still taking the relay as a three-phase relay as an example, the lead-out piece has a lead-out portion located outside the housing 100, such as the second load connection portion 432 of the second static contact 430 and the first load connection portion 443 of the first static contact 440. Among them, along the third direction Z, the arrangement heights of the second load connection portions 432 and the first load connection portions 443 corresponding to the three groups of contact assemblies can be the same. Through the above structural design, the present disclosure can ensure that the arrangement heights of the load connection portions are the same, so that it can be more convenient to connect with the external load, and the connection effect is better.

[0097] like Fig.11 and Fig.15 As shown, in one embodiment of the present disclosure, the relay proposed in the present disclosure may also be provided with an anti-short circuit structure 413, and the anti-short circuit structure 413 is used to resist the electric repulsion generated by the large current (such as short circuit current) flowing between the moving contact 411 and the static contact. Specifically, the anti-short circuit structure 413 includes a first magnet 4131 and a second magnet 4132, the first magnet 4131 is fixed relative to the housing 100, and the second magnet 4132 is fixed relative to the moving contact bridge 412, and the first magnet 4131 and the second magnet 4132 are respectively located on both sides of the moving contact bridge 412 in the second direction Y. In the example provided in this embodiment, the first magnet 4131 and the second magnet 4132 are fixedly connected to the housing 100 and the moving contact bridge 412, respectively. Fig.11 and Fig.15 Taking the embodiment shown as an example, when the moving contact 410 includes two moving contact bridges 412, the anti-short circuit structure 413 may specifically include a first magnetic conductor 4131 and two second magnetic conductors 4132, and the two second magnetic conductors 4132 are arranged corresponding to the two moving contact bridges 412. When a large fault current (such as a short-circuit current) passes through the moving contact bridge 412, a closed magnetic circuit is formed between the first magnetic conductor 4131 and the second magnetic conductor 4132 (see Fig.14 The electromagnetic attraction can resist the electromotive repulsion between the moving contact 411 and the stationary contact caused by the large fault current, thereby ensuring that the moving contact 411 and the stationary contact do not bounce apart.

[0098] See also Fig.15 , Fig.15 2 representatively shows a schematic plan view of a relay in another exemplary embodiment that can embody the principles of the present disclosure, wherein the top cover 130 is specifically omitted.

[0099] Different from Figures 1 to 10 The embodiment shown adopts the design of three-phase relay, such as Fig.15As shown, in one embodiment of the present disclosure, the relay proposed in the present disclosure can be a single-phase relay, which only includes one set of contact components, that is, the relay is only provided with two static contacts and one moving contact 410, and the relay is only provided with one second static contact 430 and one first static contact 440.

[0100] It should be noted that the relays shown in the drawings and described in this specification are only a few examples of the many types of relays that can adopt the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details of the relays shown in the drawings or described in this specification or any components of the relays.

[0101] In summary, the relay proposed in the present disclosure includes a housing 100, a magnetic circuit assembly and a contact assembly. The contact assembly includes a moving contact 410 and two static contacts. The moving contact 410 includes a moving contact bridge 412. The moving contact bridge 412 extends along a first direction X. The two ends of the moving contact bridge 412 in the first direction X are respectively provided with moving contacts 411. Both static contacts are provided with a static contact 420 and a load connection portion. Both load connection portions are located on the same side of the moving contact bridge 412 in the first direction X. The static contacts 420 of the two static contacts are arranged corresponding to the two moving contacts 411 of the moving contact bridge 412. Among them, one of the two static contacts corresponding to the moving contact away from the load connection portion along the first direction X is a first static contact, and the first static contact is provided with a first current passing portion 441. When the two moving contacts 411 are closed with the corresponding static contacts 420, the first current-passing portion 441 is at least partially located on the side of the moving contact bridge 412 away from the static contact 420, and the current-passing direction of the first current-passing portion 441 is opposite to the current-passing direction of the moving contact bridge 412. Through the above design, the present disclosure can place the first current-passing portion 441 provided by the first static contact at least partially behind the closed position of the moving contact 410, thereby providing an anti-short circuit structural effect. Specifically, when a large fault current is passed through the contact assembly, the current-passing direction of the first current-passing portion 441 is opposite to that of the moving contact bridge 412, and the magnetic field generated by the current passing through the first current-passing portion 441 can generate a repulsive force on the moving contact bridge 412 toward the static contact 420, thereby strengthening the contact pressure and preventing it from being disconnected when it is impacted by a large fault current. In addition, in one embodiment of the present disclosure, since the load connection portions of the two static contacts are both extended to the same side of the moving contact bridge 412 along the first direction X, it can be more convenient to connect to an external load. Furthermore, the present disclosure also utilizes the characteristic that one of the static contacts must extend along the first direction toward the side where the other static contact is located to set the first current passing portion 441 and enhance the short-circuit resistance of the contact assembly. The structure is reasonably utilized, avoiding the need to set up an additional structure for short-circuit resistance, saving materials and avoiding structural complexity.

[0102] The exemplary embodiments of the relay proposed by the present disclosure are described and / or illustrated in detail above. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described herein. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "one" and "above" are used to indicate that there are one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate the meaning of open-ended inclusion and mean that there may be other elements / components / etc. in addition to the listed elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0103] Although the relay presented in the present disclosure has been described in terms of various specific embodiments, those skilled in the art will recognize that the disclosure can be practiced with modification within the spirit and scope of the claims.

Claims

1. A relay, characterized in that: include: shell; A magnetic circuit component, disposed in the housing; as well as A contact assembly, comprising a moving contact and two static contacts, wherein the moving contact comprises a moving contact bridge, the moving contact bridge extends along a first direction, and moving contacts are respectively arranged at both ends of the moving contact bridge in the first direction, and both of the two static contacts are provided with static contacts and load connecting parts, and the two load connecting parts are both located on the same side of the moving contact bridge in the first direction, and the static contacts of the two static contacts are arranged corresponding to the two moving contacts of the moving contact bridge respectively; Among them, among the two static contacts, the one corresponding to the moving contact away from the load connecting part along the first direction is a first static contact, and the first static contact is provided with a first current passing part; when the two moving contacts are closed with the corresponding static contacts, the first current passing part is at least partially located on the side of the moving contact bridge away from the static contact, and the current passing direction of the first current passing part is opposite to the current passing direction of the moving contact bridge.

2. The relay according to claim 1, characterized in that: Along the first direction, the first current flowing portion is at least partially located between the moving contacts at both ends of the moving contact bridge.

3. The relay according to claim 1, characterized in that: The arrangement direction of the moving contact and the corresponding static contact is a second direction, which is perpendicular to the first direction; the first current-passing portion is located between the inner wall of the housing and the moving contact piece along a third direction, which is perpendicular to the first direction and the second direction.

4. The relay according to claim 3, characterized in that: The first flow portion is arranged parallel to a first plane, and the first plane is perpendicular to the third direction.

5. The relay according to claim 4, characterized in that: The shell has a bottom plate and a top cover, and the bottom plate and the top cover are arranged at intervals along the third direction; wherein, the first static contact also has a first fixed portion, a first bent portion and a first load connecting portion, the first fixed portion is arranged on the shell, the first fixed portion is used to set the static contact, one end of the first current-flowing portion is connected to the first fixed portion, in the third direction, the first current-flowing portion is located in the area between the top cover and the moving contact, one end of the first load connecting portion is connected to the other end of the first current-flowing portion via the first bent portion, and along the third direction perpendicular to the first direction and perpendicular to the second direction, the first load connecting portion is closer to the bottom plate than the first current-flowing portion.

6. The relay according to claim 5, characterized in that: The first load connecting portion is arranged parallel to the first plane, the first bending portion is arranged parallel to a second plane, and the second plane is perpendicular to the first direction.

7. The relay according to claim 6, characterized in that: The housing has a side wall perpendicular to the bottom plate, the side wall includes a first side wall, the first bent portion is arranged parallel to the first side wall and is located on the outer side of the first side wall; and / or An accommodating groove is formed on the outer surface of the first side wall, and the accommodating groove is suitable for accommodating the first bending portion.

8. The relay according to claim 3, characterized in that: The magnetic circuit assembly cooperates with a push rod to drive the push rod to reciprocate along the second direction, and in the first direction, the push rod is located in the middle of the moving contact bridge; wherein the first current-passing portion is arranged across the push rod along the first direction; and / or A mutual inductor is arranged on the load connecting portion of the first static contact.

9. The relay according to claim 6, characterized in that: Of the two static contacts, the one corresponding to the moving contact close to the load connecting part along the first direction is a second static contact, the second static contact having a second fixed portion, a second current flowing portion, a second bending portion and a second load connecting portion, the second fixed portion being arranged on the housing and located on the side of the moving contact bridge away from the first current flowing portion along the second direction, the second fixed portion being used to set the static contact, one end of the second current flowing portion being connected to the second fixed portion, and the second load connecting portion being connected to the other end of the second current flowing portion via the second bending portion.

10. The relay according to claim 9, characterized in that: The second load connecting portion is arranged parallel to the first plane, at least a portion of the second current-passing portion is arranged parallel to a third plane, and the third plane is perpendicular to the second direction; the second bending portion is arranged parallel to the second plane; and / or Along the third direction, the first load connecting portion and the second load connecting portion are arranged at the same height.

11. The relay according to claim 1, characterized in that: The arrangement direction of the moving contact and the corresponding static contact is a second direction, and the second direction is perpendicular to the first direction; wherein the moving contact piece includes at least two moving contact bridges, and the contact assembly includes at least two pairs of static contacts, at least two moving contact bridges are arranged along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction, at least two pairs of static contacts are arranged along the third direction, and are arranged one-to-one with at least two moving contact bridges, and the two static contacts of the same pair are respectively arranged on the two static contacts.

12. The relay according to any one of claims 1 to 11, characterized in that: The relay also includes an anti-short circuit structure; the anti-short circuit structure includes a first magnetic conductor and a second magnetic conductor, the first magnetic conductor is fixed relative to the housing, the second magnetic conductor is fixed relative to the moving contact bridge, and the first magnetic conductor and the second magnetic conductor are respectively located on both sides of the moving contact bridge in a second direction, the second direction is the arrangement direction of the moving contact and the corresponding static contact, the second direction is perpendicular to the first direction, and the anti-short circuit structure is suitable for resisting the electric repulsion generated between the moving contact and the static contact due to the flow of large fault current.

13. The relay according to any one of claims 1 to 11, characterized in that: The relay is a single-phase relay, and the single-phase relay includes a group of contact components; or The relay is a multi-phase relay, and the multi-phase relay includes at least two groups of contact components, and each group of contact components is arranged at intervals along a second direction. The second direction is the arrangement direction of the moving contacts and the corresponding static contacts, and the second direction is perpendicular to the first direction.

14. The relay according to claim 13, characterized in that: The relay is a three-phase relay, and the three groups of contact components are respectively the first group, the second group and the third group arranged in sequence along the second direction; along the second direction, the distance between the moving contact pieces of the first group and the moving contact pieces of the second group is greater than the distance between the moving contact pieces of the second group and the moving contact pieces of the third group; wherein, the relay includes a magnetic circuit component, the magnetic circuit component cooperates with a push rod to drive the push rod to reciprocate along the second direction, and the magnetic circuit component is located between the first group and the second group.

15. The relay according to claim 14, characterized in that: Along the second direction, the load connection parts of the first static contacts of the three contact assemblies are arranged at equal intervals, and the intervals between the two load connection parts of the three contact assemblies are equal; and / or The housing has two second side walls spaced apart along the second direction and perpendicular to the second direction; wherein, along the second direction, at least one of the two load connecting parts located at both ends does not extend beyond the second side wall adjacent thereto.

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