Relay and internet of things meter

Abstract

The present disclosure provides a relay and an Internet of Things meter. The relay comprises a housing, a push member capable of moving relative to the housing in a first direction, and a contact portion and a magnetic circuit portion; the contact portion comprises at least one movable contact assembly and at least one stationary contact assembly, the movable contact assembly comprises a movable contact member, the movable contact member is entirely mounted and moves along with the push member, the movable contact member extends in a second direction perpendicular to the first direction, and the two ends of the movable contact member in the second direction are respectively provided with movable contacts; each stationary contact assembly comprises two electrical connection terminals for forming an electrical connection with the outside, each electrical connection terminal is provided with at least one stationary contact, and the stationary contacts of each stationary contact assembly are respectively arranged corresponding to the movable contacts of one movable contact assembly; the magnetic circuit portion is arranged on the housing and comprises a coil assembly and a magnetic rotating member; the magnetic rotating member is rotatably arranged on the housing, and the magnetic rotating member is configured to swing within a preset swing range under the magnetic action of the coil assembly when a forward pulse voltage and a reverse pulse voltage are applied to the coil assembly, and to push the push member to move so as to drive the movable contacts of the movable contact member and the stationary contacts of the stationary contact assembly to be connected or disconnected.

Description

Relays and IoT meters

[0001] This disclosure claims priority to Chinese patent application No. 202410161498.3 filed on February 4, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a relay and an IoT meter. Background Art

[0003] A relay is an electronic control device with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0004] As the application scope of relays continues to expand, relays are also developing towards high load and miniaturization. The demand for high load requires that relays should have a large contact gap.

[0005] There is a design scheme for existing relays, that is, the contact part adopts a bridge-type dynamic contact structure and the magnetic circuit part adopts a direct-push structure. Although this design scheme can achieve a large contact gap to a certain extent, in order to meet the requirements of large-stroke driving contact components, the magnetic circuit part needs to be made very large, resulting in a large overall size of the relay, which is difficult to meet the design requirements of miniaturization.

[0006] There is another design scheme for existing relays, that is, the contact part includes a moving spring, a moving spring lead-out end and a static spring, and a moving contact is provided on the moving spring. One end of the moving spring is fixedly connected to the moving spring lead-out end, and the other end is driven by the magnetic circuit part to only rotate a small angle relative to the moving spring lead-out end to contact or separate with the static contact on the static spring. The magnetic circuit portion of this design is small in size and can meet the requirements of miniaturized design. However, in the contact portion, in order to meet the large contact gap, the movable spring needs to form a large angle with the movable spring lead-out end. Since the movable spring needs to pass a large current, its thickness needs to be set larger. Therefore, the reaction force of the movable spring itself is large, and there are the following disadvantages when used: 1. The deformation angle of the movable spring is large, and the reaction force generated is large. The magnetic rotating part cannot overcome the reaction force and cannot move. Conversely, in order to make the magnetic rotating part overcome the reaction force and move, a large functional magnetic circuit structure needs to be provided, resulting in a large magnetic circuit structure and being unable to meet the requirements of miniaturized design; 2. The deformation angle of the movable spring is large, and its own stress is large, which is easy to reach a yield state and form permanent deformation; 3. After deformation, the contact surface of the moving contact and the static contact will form an angle similar to a trumpet mouth, resulting in uncontrolled arc overflow and not in the center of the contact, affecting the life.

[0007] It can be seen that the existing relay designs are difficult to meet the requirements of high load, large contact gap and miniaturization. Summary of the Invention

[0008] A main purpose of the present disclosure is to overcome at least one defect of the above-mentioned prior art and provide a relay and an IoT meter that can meet the design requirements of a large contact gap between the dynamic contact component and the static contact component and is conducive to miniaturized design.

[0009] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0010] According to one aspect of the present disclosure, a relay includes a housing, a pusher, a contact portion, and a magnetic circuit portion, wherein the pusher is capable of moving relative to the housing in a first direction; the contact portion includes at least one moving contact assembly and at least one static contact assembly, the moving contact assembly including a moving contact assembly, the moving contact assembly being integrally mounted and moving with the pusher, extending in a second direction perpendicular to the first direction, and having moving contacts provided at both ends thereof in the second direction; each of the static contact assemblies includes two electrical connection terminals for forming an electrical connection with the outside, each of the electrical connection terminals being provided with at least one static contact, the static contacts of each static contact assembly being provided corresponding to the moving contacts of each moving contact assembly; the magnetic circuit portion is provided in the housing and includes a coil assembly and a magnetic rotating member; the magnetic rotating member is rotatably provided in the housing and is configured to swing within a preset swing range under the action of the magnetic force of the coil assembly when a forward pulse voltage and a reverse pulse voltage are applied to the coil assembly, and to push the pusher to move so as to drive the moving contact on the moving contact assemblies to close or open with the static contacts of the static contact assembly.

[0011] According to one embodiment of the present disclosure, it further includes at least one supporting member, each of which is fixedly connected to one of the dynamic contact components or to the pushing member, and is supported on the housing along a third direction; the third direction is perpendicular to both the first direction and the second direction; the magnetic rotating member is supported on the housing along the third direction, and is also used to support the pushing member in the third direction; the pushing member is supported by the magnetic rotating member and the at least one supporting member and suspended in the housing.

[0012] According to one embodiment of the present disclosure, a first limiting structure is provided in the housing, and the first limiting structure cooperates with the support member to limit the position in the third direction to limit the degree of freedom of the support member in the third direction.

[0013] According to one embodiment of the present disclosure, the housing is further provided with a second limiting structure; the second limiting structure cooperates with the support member to limit the position in the second direction to limit the degree of freedom of the support member in the second direction.

[0014] According to one embodiment of the present disclosure, the shell includes a base and a cover plate fixed to each other; a bottom plate is provided on the side of the base away from the cover plate; the first limiting structure includes a supporting wall and a first limiting column, the supporting wall is arranged on the bottom plate, the first limiting column is arranged on the cover plate of the shell, and at least a portion of the support member is respectively in contact with the supporting wall and the first limiting column on both sides along the third direction.

[0015] According to one embodiment of the present disclosure, the second limiting structure includes two retaining walls; the two retaining walls are both arranged on the base plate and are respectively located on both sides of the support member along the second direction, so as to respectively provide abutment for the two sides of the support member and limit the freedom of the support member along the second direction.

[0016] According to one embodiment of the present disclosure, each of the support members has two support arms; the two support arms respectively extend from the two ends of the dynamic contact member along the second direction, and the two support arms are elastic; corresponding to the end of each support arm, a second limit column and a third limit column are provided in the housing, the second limit column is located on the side of the support arm facing the corresponding static contact component, and the third limit column is located on the side of the support arm facing away from the corresponding static contact component; the second limit column and the third limit column are used to limit the displacement of the support arm in the first direction.

[0017] According to one embodiment of the present disclosure, when the moving contact and the static contact are closed, the support arm abuts against the second limiting column and stores energy to apply a force to the moving contact piece that can move away from the corresponding static contact component; when the moving contact and the static contact are disconnected, the support arm abuts against the third limiting column and stores energy to apply a force to the moving contact piece that can move toward the corresponding static contact component.

[0018] According to one embodiment of the present disclosure, the support member is fixedly connected to the dynamic contact assembly; the support arm is arranged at an angle relative to the second direction; in the first direction, one end of the support arm connected to the dynamic contact assembly is closer to the corresponding static contact assembly than the end thereof; wherein, along the second direction, a reverse bending portion is provided at the end of the support arm, and the reverse bending portion is arranged around the outer periphery of the second limiting column portion.

[0019] According to one embodiment of the present disclosure, it also includes an elastic member; the pushing member is provided with a through slot extending along the second direction; the dynamic contact member is inserted into the through slot, and it has freedom of movement only in the first direction relative to the pushing member, and its side facing the static contact component is in contact with one side slot wall of the through slot in the first direction; the two ends of the elastic member along the first direction respectively abut against the side of the dynamic contact member facing away from the static contact component and the other side slot wall of the through slot in the first direction.

[0020] According to one embodiment of the present disclosure, the two sides of the dynamic contact component in the third direction respectively contact the two side groove walls of the through groove in the third direction, so that the dynamic contact component and the pushing member are relatively positioned in the third direction; the dynamic contact component is provided with positioning protrusions arranged in pairs, each pair of the positioning protrusions are arranged at intervals along the second direction, and the two positioning protrusions in the same pair respectively abut against the two sides of the pushing member in the second direction, so that the dynamic contact member and the pushing member are relatively positioned in the second direction.

[0021] According to one embodiment of the present disclosure, each of the dynamic contact components includes at least two dynamic contact pieces arranged along the third direction, and each of the static contact components includes at least two pairs of static contacts arranged along the third direction, and each pair of static contacts corresponds to two dynamic contacts on one of the dynamic contact pieces.

[0022] According to one embodiment of the present disclosure, the elastic member includes a fixed portion and a deformable portion; the fixed portion is fixedly connected to the side of the dynamic contact member facing away from the static contact assembly; the fixed end of the deformable portion is fixedly connected to the fixed portion, and its free end abuts against the wall of the through groove; each of the dynamic contact members is connected to one elastic member; two adjacent elastic members in the third direction are connected by a connecting portion, and two adjacent dynamic contact members in the third direction can produce relative displacement along the first direction based on the elastic deformation ability of the connecting portions of the corresponding two elastic members.

[0023] According to an embodiment of the present disclosure, the support member is fixedly connected to each of the movable contact members, and the support member allows two adjacent movable contact members to generate relative displacement along the first direction.

[0024] According to one embodiment of the present disclosure:

[0025] Two ends of the coil assembly are arranged along the first direction and are respectively connected to a yoke, an end of the yoke away from the coil assembly is a first contact end, and the two first contact ends respectively extend to one side of the coil assembly in the second direction;

[0026] The magnetic rotating member is located on one side of the coil assembly in the second direction, and includes two contact arms spaced apart along the second direction; both ends of the contact arms in the first direction are second contact ends, the two second contact ends of each contact arm correspond to the two first contact ends, and the two contact arms are respectively located on both sides of the yoke in the second direction;

[0027] Wherein, the relay is configured to: control the power-on excitation of the coil assembly so that a magnetic force is generated between the first contact end and the second contact end to drive the magnetic rotating part to rotate, thereby driving the pushing part to move, thereby closing and opening the moving contact and the static contact.

[0028] According to one embodiment of the present disclosure, the magnetic rotating member is provided with a driving arm on one side along the second direction; the pushing member is provided with a mating groove, and the driving arm has a driving end; the driving end is located in the mating groove; wherein, the relay is configured to: drive the driving arm to swing when the magnetic rotating member rotates, so that the driving end pushes against the two side groove walls of the mating groove in the first direction, thereby driving the pushing member to move along the first direction.

[0029] According to one embodiment of the present disclosure, the driving end portion abuts against both side walls of the matching groove in the third direction on both sides in the third direction, so that the driving arm and the pushing member are relatively positioned in the third direction.

[0030] According to one embodiment of the present disclosure, when the driving end portion swings to any position relative to the pushing member, its width along the first direction is smaller than the width of the mating groove along the first direction, so that the driving arm has an idle stroke during the process of switching to abut against the two side groove walls of the mating groove along the first direction.

[0031] According to one embodiment of the present disclosure, when the driving end portion swings at any position relative to the pushing member, the width of the driving end portion along the first direction accounts for 0.5 to 0.9 of the width of the matching groove along the first direction.

[0032] According to one embodiment of the present disclosure, when the driving end portion swings at any position relative to the pushing member, the contact between the driving end portion and the groove wall is line contact or point contact.

[0033] According to one embodiment of the present disclosure, the relay also includes a fixing frame; the fixing frame is fixedly installed on the housing and is used for the magnetic rotating part to be rotatably connected, and has a first part, a second part and a connecting part connected in sequence along the second direction; the first part is for the magnetic rotating part to be rotatably connected; the second part covers the coil assembly along the third direction; the connecting part is connected to the middle part of the first part and the second part along the first direction and its width in the first direction is smaller than the width of the first part and the second part in the first direction; the pushing member is provided with an avoidance groove for avoiding the connecting part.

[0034] According to one embodiment of the present disclosure, it also includes a rotating arm; the rotating arm is rotatably connected to the housing through a second rotating shaft parallel to the first rotating shaft of the magnetic rotating member; one end of the rotating arm is rotatably connected to the driving arm, and the other end of the rotating arm constitutes the driving end and is located in the mating groove of the pushing member.

[0035] According to one embodiment of the present disclosure, a distance from the driving end of the rotating arm to the second rotating shaft is greater than a distance from the other end of the rotating arm to the second rotating shaft.

[0036] According to one embodiment of the present disclosure, the magnetic rotating part is provided with a limiting slot; one end of the rotating arm is placed in the limiting slot; the limiting slot has a long slot wall and a short slot wall arranged relatively to each other, and along the depth direction of the limiting slot, the length of the long slot wall is greater than the length of the short slot wall, and the long slot wall and the short slot wall are used to limit the swing angle of the rotating arm.

[0037] According to an embodiment of the present disclosure, along the second direction, the lengths of the two portions of the dynamic contact member extending from both sides of the pushing member are equal.

[0038] According to an embodiment of the present disclosure, the relay is a single-phase relay, and the contact portion includes one moving contact assembly and one static contact assembly.

[0039] According to one embodiment of the present disclosure, the relay is a multi-phase relay, the contact portion includes at least two moving contact assemblies and at least two static contact assemblies, each moving contact assembly is arranged at intervals along the first direction, and each moving contact assembly is installed on the pushing member.

[0040] According to one embodiment of the present disclosure, only one of the dynamic contact components is fixedly connected to the support member; or each of the dynamic contact components is fixedly connected to the support member, and only one of the support members participates in supporting the pushing member in the housing.

[0041] According to one embodiment of the present disclosure, each of the dynamic contact components is fixedly connected to the support member, and only one of the support members participates in supporting the pushing member in the housing; wherein, along the first direction, the support member fixed to the dynamic contact member farthest from the magnetic circuit part participates in supporting the pushing member in the housing.

[0042] According to an embodiment of the present disclosure, the magnetic circuit portion is located between two of the contact portions along the first direction.

[0043] According to an embodiment of the present disclosure, when the dynamic contact assembly is disconnected from the static contact assembly, the sum of the gaps between the two dynamic contacts at both ends of the dynamic contact and their respective corresponding static contacts is greater than or equal to 5.5 mm.

[0044] According to another aspect of the present disclosure, a IoT meter includes the relay described in the present disclosure.

[0045] As can be seen from the above technical solutions, the advantages and positive effects of the relay proposed in this disclosure are:

[0046] 1. The relay proposed in the present disclosure includes a housing, a pusher, a contact part and a magnetic circuit part.

[0047] Among them, in the contact part, the dynamic contact assembly includes a dynamic contact piece, which is a bridge-type dynamic contact piece extending along the second direction and having dynamic contacts at both ends. The dynamic contact piece is installed as a whole and moves with the pushing piece. When the pushing piece drives the dynamic contact piece to move, the dynamic contact piece itself does not deform. Therefore, even if a large contact gap is set between the dynamic contact assembly and the static contact assembly, the cooperation between the dynamic contact and the static contact will not form a V-shaped opening, which is convenient for rapid arc disconnection.

[0048] At the same time, in this contact part, the total contact gap is equal to the sum of the gaps between the two moving contacts at both ends of the moving contact and their corresponding static contacts when the moving contact assembly and the static contact assembly are disconnected. The gap between a single moving contact and the corresponding static contact is half of the total contact gap, and the movement stroke of the moving contact relative to the static contact assembly is also half of the total contact gap, thereby achieving the requirement of a large contact gap with a small movement stroke, which is conducive to reducing the volume of the contact part and reducing the required driving force of the magnetic circuit part, reducing the number of turns of the coil assembly of the magnetic circuit part, reducing the volume of the coil assembly, and realizing the miniaturization design of the relay.

[0049] In addition, in conventional application scenarios, the dynamic contact is generally equipped with a compression spring to provide contact pressure for its contact with the static contact component. In the present disclosure, since the compression spring used to apply contact pressure to the dynamic contact when the pusher forms an overstroke does not pass current, and current only flows through the dynamic contact, the compression spring only needs to ensure that it can provide elastic force, and there is no need to increase the thickness to pass large current. The compression spring is thin and its own stress is small. Therefore, the magnetic circuit part only needs to use a smaller magnetic driving force to drive the pusher to push the compression spring against deformation and form contact pressure, which is beneficial to reducing the volume of the magnetic circuit part. Based on this, the dynamic contact no longer has any deformation requirements, so it can be set to a specific thickness according to the size of the load current that needs to be connected.

[0050] The magnetic circuit part adopts the form of a combination of a coil assembly and a magnetic rotor, that is, a traditional swinging armature assembly structure. In this magnetic rotor, since the magnet and the armature fit closely, the magnetic resistance between the two is small. Therefore, the overall magnetic efficiency of the magnetic circuit part is high, which is further conducive to reducing the volume of the magnetic circuit part and meeting the miniaturization design requirements of the relay.

[0051] Based on the above design, the relay proposed in the present disclosure can simultaneously meet the requirements of high load, large contact gap and miniaturization.

[0052] 2. Furthermore, in one embodiment of the present disclosure, the support member is supported on the housing along the third direction; the magnetic rotating member is supported on the housing along the third direction, and the magnetic rotating member also supports the pushing member in the third direction, and the pushing member is supported by the magnetic rotating member and the support member and suspended in the housing. Accordingly, the present disclosure utilizes the support member to support the housing along the third direction, so that the moving contact member and the pushing member are both suspended in the housing without abutting against the inner wall of the housing, thereby avoiding friction between the moving contact member and the pushing member and the housing during movement, thereby reducing the required magnetic driving force, so that the magnetic circuit part can be reduced in size, which is conducive to the miniaturization design of the relay.

[0053] 3. Furthermore, in the case where the movement stability of the pushing member is affected by the conversion of the rotational motion of the magnetic rotating member into the linear motion of the pushing member, in one embodiment of the present disclosure, the design of limiting the support member along the first direction and the second direction respectively is utilized, and the present disclosure can limit the degree of freedom of the support member in the third direction, so that the pushing member will not rotate due to unbalanced force when bearing a heavy dynamic contact component, thereby further improving the stability of the pushing member. In addition, the present disclosure can limit the degree of freedom of the support member in the second direction, so that the pushing member will not swing with the magnetic rotating member, and can stably move along the first direction, so that the two moving contacts of the dynamic contact member can reliably contact and separate with the corresponding static contact component.

[0054] 4. Furthermore, in the case where the conversion of the rotational motion of the magnetic rotating member into the linear motion of the pushing member affects the movement stability of the pushing member, in one embodiment of the present disclosure, a design is also used in which the driving arm forms an idle stroke in the process of switching to abut the groove walls on both sides of the mating groove. The present disclosure can reduce the movement component and friction force of the driving end relative to the pushing member in the second direction, thereby reducing the deflection amount of the pushing member movement, thereby further improving the stability of the pushing member movement in the first direction, so that the moving contacts at both ends of the moving contact member can reliably contact and separate with the corresponding static contact components.

[0055] 5. Furthermore, in one embodiment of the present disclosure, a design is used in which the support member is limited in the first direction by the second limiting post and the third limiting post. Through the above design, the present disclosure can utilize the second limiting post and the third limiting post to cooperate with and limit the displacement of the support arm in the first direction. That is, in actual application, the spacing between the second limiting post and the third limiting post can be controlled to minimize the displacement of the support arm in the first direction, thereby reducing the amount of scraping and friction between the support arm and the housing. At the same time, the present disclosure can utilize the second limiting post and the third limiting post to abut the support arm, so that the support arm undergoes elastic deformation in both the closed and disconnected states of the dynamic contact assembly. This can provide driving force to the dynamic contact assembly and the pusher, improve the response speed of the dynamic contact assembly when closed and disconnected, and enable the magnetic circuit portion to use a smaller magnetic force to achieve drive, thereby facilitating reduction in the volume of the magnetic circuit portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The various objects, features, and advantages of the present disclosure will become more apparent upon consideration of the following detailed description of preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely illustrative illustrations of the present disclosure and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout.

[0057] FIG1 is a schematic perspective structural diagram of a relay according to an exemplary embodiment;

[0058] FIG2 is a perspective exploded schematic diagram of the relay shown in FIG1 ;

[0059] FIG3 is a schematic perspective view of a partial structure of the relay shown in FIG1 ;

[0060] FIG4 is a schematic perspective view of a partial structure of the structure shown in FIG3 ;

[0061] FIG5 is a top view of FIG4;

[0062] FIG6 is an enlarged schematic diagram of portion A in FIG5 ;

[0063] FIG7 is a sectional view taken along line CC in FIG6;

[0064] FIG8 is a sectional view taken along line BB in FIG5;

[0065] Figures 9 and 10 are schematic diagrams of the three-dimensional structure of the dynamic contact assembly at two different viewing angles;

[0066] FIG11 is a perspective exploded schematic diagram of a moving contact assembly;

[0067] FIG12 is a schematic diagram of the three-dimensional structure of the cover plate;

[0068] FIG13 is a plan view of the combined structure of the coil assembly and the magnetic rotating member;

[0069] FIG14 is a perspective schematic diagram of the combined structure of the pusher, the dynamic contact assembly and the magnetic rotating member;

[0070] FIG15 is a front view of FIG14;

[0071] FIG16 is a top view of FIG14;

[0072] FIG17 is a schematic plan view of a relay according to another exemplary embodiment;

[0073] FIG18 is a schematic plan view of a relay according to yet another exemplary embodiment;

[0074] 19 and 20 are schematic plan views of a portion of the structure shown in FIG. 18 in different states.

[0075] The accompanying drawings are described as follows: 100. Base; 4121. Positioning protrusion; 525. Rib plate; 110. Support wall; 413. Support member; 530. Housing; 120. Retaining wall; 4131. Support arm; 540. Rotating arm; 130. Second limiting column; 41311. Reverse bending portion; 600. Fixing frame; 140. Third limiting column; 414. Elastic member; 610. First portion; 210. Coil assembly; 4141. Elastic arm; 620. Second portion; 220. Yoke; 421. Static contact assembly; 630. Connecting portion; 221. First contact terminal; 422. Lead-out piece; 700. Cover plate; 300. Pushing member; 423. Electrical connection terminal; 710. First limiting column; 310. Matching groove; 500. Magnetic rotating element; D1. Outer diameter; 311. Slot wall; 510. Contact arm; D2. Width; 3111. Avoidance chamfer; 511. Second contact end; D3. Width; 320. Avoidance groove; 520. Drive arm; G. Gap; 330. Through slot; 521. Drive end; R1. First rotating shaft; 410. Moving contact assembly; 522. Limiting slot; R2. Second rotating shaft; 411. Moving contact; 5221. Long slot wall; X. First direction; 412. Moving contact; 5222. Short slot wall; Y. Second direction; 524. Drive arm body; Z. Third direction. DETAILED DESCRIPTION

[0076] Various changes can be made 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.

[0077] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part of this disclosure and in which are shown by way of example different exemplary structures, systems and steps that may implement aspects of the present disclosure. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps may be used, and structural and functional modifications may 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 for convenience only, for example, according to the directions of the examples depicted in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of a structure to fall within the scope of the present disclosure.

[0078] Referring to Figure 1, a representative perspective view of the relay disclosed herein is shown. In this exemplary embodiment, the relay disclosed herein is described using a three-phase relay as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other variations may be made to the following specific embodiments to apply the relevant designs of this disclosure to other types of relays, and such variations remain within the scope of the principles of the relay disclosed herein.

[0079] 2 to 16 , FIG2 is a representative exploded perspective view of a relay; FIG3 is a representative perspective view of a partial structure of the relay, wherein the cover 700 is omitted; FIG4 is a representative perspective view of a partial structure of FIG3 , wherein the fixing frame 600 and part of the lead-out plate are further omitted; FIG5 is a representative top view of FIG4 ; FIG6 is a representative enlarged perspective view of portion A in FIG5 ; FIG7 is a cross-sectional view taken along line CC in FIG6 ; FIG8 is a cross-sectional view taken along line BB in FIG5 ; FIG9 and FIG10 are schematic diagrams of the relay. 0 respectively shows a schematic diagram of the three-dimensional structure of the dynamic contact assembly 410 from two different perspectives; FIG11 shows a schematic diagram of the three-dimensional exploded view of the dynamic contact assembly 410; FIG12 is a schematic diagram of the three-dimensional structure of the cover plate; FIG13 shows a schematic plan view of the combined structure of the coil assembly 210 and the magnetic rotating member 500; FIG14 shows a schematic diagram of the three-dimensional structure of the combined structure of the pusher 300, the dynamic contact assembly 410, and the magnetic rotating member 500; FIG15 shows a representative front view of FIG14; and FIG16 shows a representative top view of FIG14. The following, in conjunction with the above-mentioned figures, describes in detail the structure, connection method, and functional relationship of the main components of the relay proposed in this disclosure.

[0080] As shown in Figures 1 to 16, in one embodiment of the present disclosure, the relay provided by the present disclosure includes a housing, a pusher 300, a contact portion, and a magnetic circuit portion. The pusher 300 can move relative to the housing in a first direction X, which can be, for example, a direction parallel to the bottom plate of the housing.

[0081] The contact portion includes at least one dynamic contact assembly 410 and at least one static contact assembly. The dynamic contact assembly 410 includes a dynamic contact member 412, which is integrally mounted and moves with the pusher 300. The dynamic contact member 412 extends along a second direction Y. The second direction Y can be, for example, perpendicular to the first direction X and parallel to the bottom plate of the housing. The dynamic contact member 412 is provided with at least one dynamic contact point 411 at each end in the second direction Y. In the example provided in this embodiment, a dynamic contact point 411 is provided at each end of the dynamic contact member 412.

[0082] The static contact assembly includes two electrical connection terminals 423 for establishing an electrical connection with the outside world. Each electrical connection terminal 423 is provided with at least one static contact 421. The static contacts 421 of each static contact assembly are respectively arranged to correspond to the dynamic contacts 411 of the dynamic contact assembly 410. The two ends of the dynamic contact 412 in the second direction Y are respectively located on either side of the pusher 300 in the second direction Y. In addition, the static contact assembly is mounted on the housing and connected to a lead-out tab 422. The lead-out tab 422 is connected to the electrical connection terminals 423. The end of the lead-out tab 422 away from the static contact assembly extends out of the housing and may be provided with a mutual inductor (not shown in the drawings).

[0083] The magnetic circuit portion is arranged in the outer shell and includes a coil assembly 210 and a magnetic rotating member 500. The magnetic rotating member 500 is rotatably arranged in the outer shell. The magnetic rotating member 500 can accept the magnetic force of the coil assembly 210 when the coil assembly 210 is subjected to a positive pulse voltage and a reverse pulse voltage and can swing within a preset swing range, and push the pushing member 300 to move to drive the moving contact 411 on the moving contact member 412 to close or disconnect with the static contact 421 of the static contact assembly.

[0084] Through the above design, the dynamic contact 412 is a bridge-type dynamic contact extending along the second direction Y and having dynamic contacts 411 at both ends. It is installed as a whole and moves with the pushing member 300. When the pushing member 300 drives the dynamic contact 412 to move, the dynamic contact 412 itself does not deform. Therefore, even if a large contact gap is set between the dynamic contact component 412 and the static contact component, the cooperation between the dynamic contact 412 and the static contact 421 will not form a V-shaped opening, which facilitates rapid arc disconnection.

[0085] Furthermore, on the basis of miniaturized design, by designing that the two ends of the dynamic contact 412 are respectively located on both sides of the pusher 300, the present disclosure can realize the application of a bridge-type dynamic contact, thereby realizing a larger contact gap design between the dynamic contact 411 and the static contact assembly, for example, it can meet the requirements of the new standard of the State Grid smart IoT meter (for example, 5.5mm).

[0086] In this embodiment, when the dynamic contact piece 412 adopts a bridge structure, the total gap of the contact part is equal to the sum of the gaps between the two dynamic contacts 411 at both ends of the dynamic contact piece 412 and their corresponding static contact components. Based on this, a large gap design can be achieved, and at the same time, the movement stroke of the dynamic contact piece 412 can be relatively reduced.

[0087] Specifically, in this contact part, the total contact gap is equal to the sum of the gaps between the two moving contacts 411 of the moving contact 412 and their corresponding static contacts 421 when the moving contact assembly 410 and the static contact assembly are disconnected. The gap between a single moving contact 411 and the corresponding static contact 421 is half of the required total contact gap, and the movement stroke of the moving contact 412 relative to the static contact assembly is also half of the total contact gap, thereby achieving a large contact gap requirement with a small movement stroke, which is conducive to reducing the volume occupied by the contact part and reducing the required driving force of the magnetic circuit part, reducing the number of turns of the coil assembly 210 of the magnetic circuit part, reducing the volume of the coil assembly 210, and realizing a miniaturized design of the relay.

[0088] In addition, in conventional application scenarios, the dynamic contact 412 is generally equipped with a compression spring (the elastic member 414 shown in Figures 10 and 11) to provide contact pressure for its contact with the static contact component. In this embodiment, the compression spring used to apply contact pressure to the dynamic contact 412 when the pusher 300 forms an overstroke does not pass current, but only passes current through the dynamic contact 412. Therefore, the compression spring only needs to ensure that it can provide elastic force, and there is no need to increase the thickness of the compression spring in order to pass a large current. The compression spring is thin and its own stress is small. Therefore, the magnetic circuit part only needs to use a smaller magnetic driving force to drive the pusher 300 to push the compression spring to deformation and form contact pressure, which is beneficial to reducing the volume of the magnetic circuit part. Based on this, the dynamic contact 412 no longer has a deformation requirement, so it can be set to a specific thickness according to the size of the load current that needs to be connected.

[0089] It should be noted that Figures 1 to 5 show some lead-out pieces 422 of the relay. For example, in the second direction Y, the lead-out pieces 422 connected to the electrical connection ends 423 located on the same side of the pusher 500 can refer to the structure shown in the accompanying drawings, while the lead-out pieces connected to the electrical connection ends 423 located on the other side of the pusher 500 are not shown, and it can be understood that various existing lead-out piece structures can be adopted.

[0090] As shown in Figures 6 to 11, in one embodiment of the present disclosure, the relay proposed in the present disclosure further includes at least one support member 413, which is fixedly connected to the movable contact assembly 410 or the pusher 300. In this embodiment, the support member 413 is specifically fixedly connected to each movable contact member 412 in the movable contact assembly 410 by a method not limited to riveting, and the support member 413 is supported by the housing along a third direction Z. The third direction Z can be, for example, perpendicular to both the first direction X and the second direction Y, that is, it can be, for example, perpendicular to the bottom plate of the housing. On this basis, the magnetic rotating member 500 is supported by the housing along the third direction Z, and preferably can be fixed relative to the housing in the third direction Z. The magnetic rotating member 500 also supports the pusher 300 in the third direction Z. As a result, the pusher 300 is supported by the magnetic rotating member 500 and the support member 413 and suspended within the housing.

[0091] Through the above design, the present disclosure utilizes the support member 413 to support the outer shell along the third direction Z, so that the dynamic contact member 412 and the pushing member 300 are both suspended in the outer shell without abutting against the inner wall of the outer shell, thereby avoiding friction between the dynamic contact member 412 and the pushing member 300 and the outer shell during movement, thereby reducing the required magnetic driving force, allowing the magnetic circuit part to be reduced in volume, and facilitating miniaturization.

[0092] As shown in Figures 6 to 11, based on the design of the relay including a support member 413, in one embodiment of the present disclosure, a first limiting structure is provided in the housing. The first limiting structure cooperates with the support member 413 to limit the degree of freedom of the support member 413 in the third direction Z. Due to the large weight of the dynamic contact member 412, the portions of the pusher 300 located on both sides of the magnetic rotating member 500 along the first direction X may rotate due to unbalanced forces. To overcome this problem, in this embodiment, the support member 413 is limited to the housing along the third direction Z by the first limiting structure. That is, the degree of freedom of the support member 413 in the third direction Z is limited, so that the pusher 300 will not rotate due to unbalanced forces, further improving the stability of the pusher 300.

[0093] As shown in Figures 6 to 11 , based on the design of the relay including a support member 413, in one embodiment of the present disclosure, a second limiting structure is provided in the housing. The second limiting structure cooperates with the support member 413 to limit the support member 413 in the second direction Y, thereby limiting the support member 413's degree of freedom in the second direction Y. Because the magnetic rotating member 500 employed in the present disclosure exhibits a fan-shaped motion, the pusher 300 is susceptible to deflection with the magnetic rotating member 500 when the magnetic rotating member 500 rotates. To overcome this problem, in this embodiment, the support member 413 is limited to the housing in the second direction Y by the second limiting structure. This means that the support member 413's degree of freedom in the second direction Y is limited. Therefore, when the magnetic rotating member 500 drives the pusher 300 to move in the first direction X, the pusher 300 does not deflect with the magnetic rotating member 500 and can move stably in the first direction X, allowing the two movable contacts 411 of the movable contact member 412 to reliably contact and separate with the corresponding static contact assemblies.

[0094] In some embodiments, in order to achieve the limiting cooperation between the dynamic contact member 412 and the pushing member 300 and the housing, two types of support members 413 can also be set. These two types of support members 413 are respectively limited and cooperated with the housing to achieve the limitation of the freedom of the support member 413 in the second direction Y and the third direction Z respectively, which is not limited to this embodiment.

[0095] As shown in Figures 6 and 7 , based on the design of a first limiting structure provided on the housing, in one embodiment of the present disclosure, the housing includes a base 100 and a cover plate 700 that are fixed to each other, with a bottom plate provided on the side of the base 100 away from the cover plate 700. The first limiting structure may include a support wall 110 and a first limiting post 710. The support wall 110 is provided on the bottom plate of the housing, and the first limiting post 710 is provided on the cover plate 700 of the housing. Accordingly, at least a portion of the support member 413 abuts against the support wall 110 and the first limiting post 710 on both sides along the third direction Z, thereby limiting the degree of freedom of the support member 413 in the third direction Z.

[0096] As shown in Figure 6, based on the design that the shell is provided with a second limiting structure, in one embodiment of the present disclosure, the second limiting structure may include two retaining walls 120, both of which are arranged on the bottom plate of the shell, and the two retaining walls 120 are respectively located on both sides of the support member 413 along the second direction Y, so as to respectively provide the two sides of the support member 413 with abutment and limit the freedom of the support member 413 along the second direction Y.

[0097] As shown in Figures 6 and 10, in one embodiment of the present disclosure, each support member 413 may have two support arms 4131, each extending from the ends of the movable contact member 412 in the second direction Y. Both support arms 4131 may be elastic. A second limiting post 130 and a third limiting post 140 may be provided in the housing at the ends of each support arm 4131. The second limiting post 130 is located on the side of the support arm 4131 facing the corresponding static contact assembly, and the third limiting post 140 is located on the side of the support arm 4131 facing away from the corresponding static contact assembly.

[0098] Through the above design, the present disclosure can utilize the second limiting column 130 and the third limiting column 140 to cooperate with each other to limit the displacement of the support arm 4131 in the first direction X. That is, in actual application, the spacing between the second limiting column 130 and the third limiting column 140 can be controlled to minimize the displacement of the support arm 4131 in the first direction X, thereby reducing the amount of scraping and friction between the support arm 4131 and the housing. At the same time, the present disclosure can utilize the second limiting column 130 and the third limiting column 140 to abut the support arm 4131, so that the support arm 4131 undergoes elastic deformation in both the closed and open states of the dynamic contact assembly 410. This can provide driving force to the dynamic contact assembly 410 and the pusher 300, improve the response speed of the dynamic contact assembly 410 when closed and opened, and enable the magnetic circuit portion to use a smaller magnetic force to achieve drive, thereby facilitating a reduction in the volume of the magnetic circuit portion.

[0099] In addition, when the magnetic rotating member 500 drives the pushing member 300 and the dynamic contact member 412 to move to the closed state, the support arm 413 forms an elastic force under the abutment of the second limiting column 130, reducing the impact force when the dynamic contact 411 and the static contact 421 contact, thereby improving the service life of the dynamic contact 411 and the static contact assembly; when the magnetic rotating member 500 drives the pushing member 300 and the dynamic contact member 412 to move to the disconnected state, the elastic force formed by the support arm 4131 under the abutment of the third limiting column 140 can reduce the influence of inertia on the pushing member 300, so that the pushing member 300 will not over-travel due to the existence of idle travel, thereby further improving the smoothness of the movement of the pushing member 300.

[0100] In one embodiment of the present disclosure, when the movable contact 411 and the stationary contact 421 are closed, the support arm 4131 abuts the second limiting post 130 and stores energy, thereby applying a force to the movable contact 412 that enables it to move away from the corresponding stationary contact assembly. When the movable contact 411 and the stationary contact 421 are disconnected, the support arm 4131 abuts the third limiting post 140 and stores energy, thereby applying a force to the movable contact 412 that enables it to move toward the corresponding stationary contact assembly.

[0101] As shown in FIG6 , based on the design of the housing being provided with a second limiting post 130 and a third limiting post 140 , in one embodiment of the present disclosure, the support member 413 is fixedly connected to the dynamic contact assembly 410 ; the support arm 4131 can be arranged at an angle relative to the second direction Y. In the first direction X, the end of the support arm 4131 connected to the dynamic contact assembly 410 is closer to the corresponding static contact assembly than the end thereof. Based on this, along the second direction Y, the second limiting post 130 is arranged farther away from the dynamic contact member 412 than the third limiting post 130 . The end of the support arm 4131 is provided with a reverse bend 41311 . The reverse bend 41311 bends in a direction opposite to the tilt direction of the support arm 4131 and is arranged around a portion of the outer circumference of the second limiting post 130 .

[0102] Through the above design, the present disclosure utilizes the reverse bend portion 41311 to prevent the support arm 4131 from being disengaged from between the second positioning post 130 and the third limiting post 140 when deformation occurs. The reverse bend portion 41311 can further prevent scraping between the support arm 4131 and the retaining wall 120. In a preferred embodiment, the end of the reverse bend portion 41311 can be further bent, further reducing the risk of scraping between the support arm 4131 and the retaining wall 120.

[0103] As shown in Figures 9 to 11 and 14, in one embodiment of the present disclosure, the relay proposed in the present disclosure may further include an elastic member 414. The pusher 300 defines a through slot 330 that extends through the pusher 300 along the second direction Y. The movable contact 412 is inserted into the through slot 330, and the movable contact 412 has freedom of movement relative to the pusher 300 only in the first direction X. The side of the movable contact 412 facing the static contact assembly contacts the wall of the through slot 330 on one side in the first direction X. The two ends of the elastic member 414 along the first direction X respectively abut the side of the movable contact 412 facing away from the static contact assembly and the wall of the through slot 330 on the other side in the first direction X.

[0104] Accordingly, by utilizing the elastic member 414, the present disclosure can achieve relative limitation of the dynamic contact member 412 and the pushing member 300 in the first direction X, and when the dynamic contact point 411 contacts the static contact assembly and the pushing member 300 continues to move toward the side of the static contact assembly, the elastic arm 4141 (refer to Figure 10) of the elastic member 414 is compressed and deformed, thereby providing elastic buffering and contact pressure to the dynamic contact member 412, and at the same time, applying an elastic restoring force to the pushing member 300 along the first direction X back to the static contact assembly.

[0105] As shown in Figure 14, in one embodiment of the present disclosure, the pushing member 300 is provided with a through slot 330 passing through along the second direction Y, and the dynamic contact member 412 is inserted into the through slot 330. Along the third direction Z, the width of the dynamic contact component 410 is equal to the width of the through slot 330, so that the two sides of the dynamic contact component 410 in the third direction Z respectively abut against the groove walls on both sides of the through slot 330 in the third direction Z, so that the dynamic contact component 410 and the pushing member 300 are relatively positioned in the third direction Z.

[0106] As shown in Figures 9 and 14, in one embodiment of the present disclosure, the dynamic contact member 412 may include positioning protrusions 4121 arranged in pairs, and each pair of positioning protrusions 4121 are arranged at intervals along the second direction Y, and the two positioning protrusions 4121 in the same pair respectively abut against the two sides of the pushing member 300 in the second direction Y, so that the dynamic contact member 412 and the pushing member 300 are relatively positioned in the second direction Y.

[0107] Based on the design that the movable contact piece 412 is provided with a positioning protrusion 4121, in one embodiment of the present disclosure, when the movable contact assembly 410 includes at least two movable contact pieces 412 arranged along the third direction Z, only two movable contact pieces 412 may be provided with the positioning protrusion 4121. These two movable contact pieces 412 may be two movable contact pieces 412 located at both ends of the movable contact assembly 410 in the third direction Z. For example, the positioning protrusion 4121 may be provided on the surface of the movable contact piece 412 facing away from the other movable contact pieces 412.

[0108] As shown in FIG16 , in one embodiment of the present disclosure, the lengths of the two portions of the movable contact member 412 extending from the two sides of the pusher 300 can be equal along the second direction Y. Through this design, the present disclosure can further ensure that the movable component, formed by the movable contact assembly 410 and the pusher 300, is subjected to balanced forces in the second direction Y, thereby ensuring the stability and reliability of the movement of the pusher 300.

[0109] As shown in Figures 9 to 11, in one embodiment of the present disclosure, the dynamic contact assembly 410 may include at least two dynamic contact members 412 arranged along the third direction Z, such as but not limited to the two dynamic contact members 412 shown in the drawings. Correspondingly, the electrical connection end 423 of the static contact assembly may include at least two static contacts 421 arranged along the third direction Z, such as but not limited to the two static contacts 421 shown in the drawings, and each static contact 421 of each electrical connection end 423 corresponds to each dynamic contact 411 located at the same end of each dynamic contact member 412.

[0110] Accordingly, taking the dynamic contact assembly 410 including two dynamic contact pieces 412 as an example, the dynamic contact assembly 410 disclosed in the present invention has a design of double dynamic contact pieces 412, which can ensure a large contact gap and a small disconnection reaction force, and enables the use of multiple dynamic contact pieces 412 in parallel to reduce the contact resistance to meet performance requirements. In addition, when the four groups of contacts are subjected to high current and voltage loads, they play the role of series structure voltage division and parallel structure shunting, reducing the load on the contacts and improving performance reliability.

[0111] In one embodiment of the present disclosure, the elastic member 414 includes a fixed portion and a deformable portion. The fixed portion is fixedly connected to the side of the dynamic contact member 412 facing away from the static contact assembly. The fixed end of the deformable portion is fixedly connected to the fixed portion, and the free end of the deformable portion abuts against the groove wall of the through groove 330. Each dynamic contact member 412 in the dynamic contact assembly 410 is connected to an elastic member 414. Two elastic members 414 adjacent in the third direction Z are connected by a connecting portion 4142. Based on the elastic deformation ability of the connecting portions 4142 of the corresponding two elastic members 414, the two dynamic contact members 412 adjacent in the third direction Z can produce relative displacement along the first direction X.

[0112] In one embodiment of the present disclosure, the support member 413 is fixedly connected to each movable contact member 412, and the support member 413 allows two adjacent movable contact members 412 to be relatively displaced along the first direction X, so that when there is a difference in the contact gap between different groups of movable contacts 411 and static contacts 421 due to manufacturing errors or installation errors of each contact (including static contacts and movable contacts), the contact pressure between each movable contact member 412 and different static contact components can be adaptively adjusted based on the elastic member 414.

[0113] As shown in Figures 10 and 11, based on the design that the dynamic contact assembly 410 includes at least two dynamic contact members 412, in one embodiment of the present disclosure, a support member 413 is provided on the side of the dynamic contact assembly 410 facing away from the static contact assembly. The support member 413 is simultaneously connected to the at least two dynamic contact members 412. The support member 413 has two support arms 4131, and the two support arms 4131 extend from both sides of the push member 300 in the second direction Y. On this basis, a first limiting structure and a second limiting structure are provided in the housing. The first limiting structure cooperates with the support arm 413 for upper positioning in the third direction Z, and the second limiting structure cooperates with the support arm 413 for upper positioning in the second direction Y. In some embodiments, when the dynamic contact assembly 410 includes at least two dynamic contact members 412, a support member 413 may be connected to each dynamic contact member 412, and the present embodiment is not limited thereto.

[0114] As shown in Figures 2 to 5 and Figures 13 to 16, in one embodiment of the present disclosure, the two ends of the coil assembly 210 are arranged along the first direction X and are respectively connected to the yoke 220, that is, the two ends of the coil assembly 210 along the first direction X are respectively connected to the yoke 220, and the end of the yoke 220 away from the coil assembly 210 is the first contact end 221, and the two first contact ends 221 respectively extend to one side of the coil assembly 210 in the second direction Y.

[0115] The magnetic rotor 500 is located on one side of the coil assembly 210 in the second direction Y. The magnetic rotor 500 includes two contact arms 510 spaced apart along the second direction Y. The contact arms 510 each have a second contact end 511 at either end in the first direction X. The two second contact ends 511 of each contact arm 510 correspond to the two first contact ends 221, respectively. The two contact arms 510 are located on either side of the yoke 220 in the second direction Y. As mentioned above, the basic operating principle of the relay proposed in this disclosure includes: by controlling the energization and excitation of the coil assembly 210, a magnetic force is generated between the first contact end 221 and the second contact end 511, thereby driving the magnetic rotor 500 to rotate, thereby driving the pusher 300 to move, thereby closing and opening the movable contact 411 and the stationary contact 421.

[0116] Through the above design, the present disclosure adopts a design in which the coil assembly 210 and the magnetic rotating member 500 are matched for the magnetic circuit part, that is, a traditional swinging armature assembly structure is adopted. The magnetic rotating member 500 includes a magnet and two armatures. The two armatures are respectively fixed to the two pole faces of the magnet and respectively constitute two contact arms 510. Since the magnet and the armature are closely matched, the magnetic resistance between the two is small. Therefore, the overall magnetic efficiency of the magnetic circuit part is high, which is further beneficial to reducing the volume of the magnetic circuit part and meets the miniaturization design requirements of the relay.

[0117] As shown in Figures 2 and 13 to 17, in one embodiment of the present disclosure, a driving arm 520 is provided on one side of the magnetic rotating member 500 along the second direction Y. The pushing member 300 is provided with a mating slot 310. The end of the driving arm 520, which is away from the magnetic rotating member 500, is a driving end 521, which is located in the mating slot 310. Accordingly, when the magnetic rotating member 500 rotates, the driving arm 520 is driven to swing, causing the driving end 521 to push against the slot walls 311 on both sides of the mating slot 310 in the first direction X, thereby driving the pushing member 300 to move along the first direction X.

[0118] As shown in Figure 15, in one embodiment of the present disclosure, the driving end 521 contacts the groove walls on both sides of the matching groove 310 in the third direction on both sides in the third direction Z, thereby achieving relative positioning of the driving arm 520 and the pushing member 300 in the third direction Z.

[0119] As shown in Figures 16 and 17, based on the design that the pushing member 300 is provided with a mating groove 310 and the magnetic rotating member 500 is connected to the driving arm 520, in one embodiment of the present disclosure, when the driving end 521 swings to any position relative to the pushing member 300, the width of the driving end 521 along the first direction X (for example, the outer diameter D1 of the driving end 521) can be smaller than the width D2 of the mating groove 310 along the first direction X, so that the driving arm 520 has an idle stroke in the process of switching to abut the groove walls 311 on both sides of the mating groove 310 along the first direction X. For example, in this idle stroke, the driving end 521 has a gap G with the groove wall 311.

[0120] Through the above design, during the swinging process of the magnetic rotating member 500, when the driving end 521 switches from abutting the groove wall 311 on one side of the mating groove 310 to abutting the groove wall 311 on the other side, the driving end 521 has an idle stroke that does not abut against the groove wall 311 of the mating groove 310. The existence of this idle stroke reduces the movement component and friction force of the driving end 521 relative to the pushing member 300 along the second direction Y, thereby reducing the deflection amount of the pushing member 300, thereby further improving the stability of the pushing member 300 moving along the first direction X, so that the two moving contacts 411 of the moving contact member 412 can reliably contact and separate with the corresponding static contact components.

[0121] As shown in Figure 16, in one embodiment of the present disclosure, a relief chamfer 3111 can be provided at the notch of the mating slot 310 facing the magnetic rotor 500. This design allows the present disclosure to utilize the relief chamfer 3111 to widen the notch of the mating slot 310, facilitating the insertion of the driving end 521 into the mating slot 310. Furthermore, when the driving arm 520 is connected to a rib 525, the relief chamfer 3111 can further facilitate the rib 525's clearance, preventing structural interference.

[0122] As shown in FIG16 , in one embodiment of the present disclosure, when the driving end portion 521 of the driving arm 520 swings to any position relative to the pusher 300, the contact between the driving end portion 521 and the groove wall 311 may be line contact or point contact. For example, the driving end portion 521 may be generally cylindrical, with the axis of the cylinder perpendicular to the bottom plate of the housing, i.e., the axis of the cylinder extends along the third direction Z, and the outer diameter D1 of the corresponding circle of the cylinder may be smaller than the width D2 of the mating groove 310 along the first direction X.

[0123] Through the above design, the present disclosure can reduce the contact area between the driving end 521 and the groove wall 311, thereby reducing scraping and the friction between the driving end 521 and the pusher 300, thereby reducing the possibility of the pusher 300 swinging with the driving end 521.

[0124] In some embodiments, the driving end 521 may also be in other shapes, such as a polygonal column, an elliptical column, a sphere, an ellipsoid, etc., and is not limited to this embodiment.

[0125] As shown in Figure 16, based on the design that the driving end 521 and the groove wall 311 have an idle stroke, in one embodiment of the present disclosure, the width of the driving end 521 (for example, the outer diameter D1 of the corresponding circle of the above-mentioned cylinder) can account for 0.5 to 0.9 of the width D2 of the mating groove 310 along the first direction X, for example, 0.5, 0.6, 0.7, 0.8, 0.9, etc.

[0126] Through the above design, the present disclosure can avoid the width of the driving end 521 being too small. The smaller the width of the driving end 521 is compared to the width D2 of the matching groove 310, the greater the idle stroke of the driving end 521 during the swinging process, resulting in the magnetic rotating part 500 needing to swing at a larger angle to make the driving end 521 contact with the groove wall 311.

[0127] Furthermore, the present disclosure can avoid the width of the driving end 521 being too large, thereby avoiding the idle stroke of the driving end 521 being too small during the swinging process. If the idle stroke is too small, a large relative movement along the second direction is likely to occur between the driving end 521 and the groove wall 311, resulting in an increase in the friction force in the second direction, and easily causing the pushing member 300 to swing along with the driving end 521.

[0128] In some embodiments, the ratio of the width of the driving end 521 to the width D2 of the matching slot 310 may be less than 0.5, or greater than 0.9, such as 0.49, 0.91, etc., and is not limited to this embodiment.

[0129] As shown in Figures 13 and 16 , in one embodiment of the present disclosure, the driving arm 520 can be fixedly connected to the magnetic rotor 500. For example, the driving arm 520 can be integrally formed with the magnetic rotor 500, or can be connected to the magnetic rotor 500 by welding or other methods. Accordingly, when the magnetic rotor 500 rotates relative to the housing about the first rotation axis R1, the driving arm 520 also rotates (or swings) about the first rotation axis R1.

[0130] It should be noted that the so-called first rotation axis R1 refers to the shaft structure that enables the rotational connection between the magnetic rotating element 500 and the housing. It is not limited to the specific component on which it is disposed, nor is it limited to whether it comprises a single shaft structure or a multi-segment shaft structure. For example, when the magnetic rotating element 500 includes a housing 530, the first rotation axis R1 may comprise two shaft structures, one disposed in the housing 530, with the two shaft structures connected to opposite sides in the third direction Z.

[0131] As shown in Figure 13 , based on the design in which the drive arm 520 is fixedly connected to the magnetic rotor 500, in one embodiment of the present disclosure, the magnetic rotor 500 may further include a housing 530 rotatably mounted to the outer housing. For example, the housing 530 is rotatably connected to the outer housing via a first rotation axis R1. Furthermore, the contact arm 510 of the magnetic rotor 500 may be partially disposed within the housing 530, with the second contact end 511 of the contact arm 510 extending from the housing 530. The drive arm 520 and housing 530 may be integrally injection-molded.

[0132] As shown in FIG16 , in one embodiment of the present disclosure, the driving arm 520 may include a driving arm body 524 connected to the driving end portion 521 and the magnetic rotating member 500. The width D3 of the driving arm body 524 may be smaller than the width of the driving end portion 521 (e.g., the outer diameter D1 of the driving end portion 521). When the width D3 of the driving arm body 524 is too large, during the swinging process of the driving arm 520, the driving arm body 524 may contact the slot wall 311 of the mating slot 310 before the driving end portion 521. For example, the driving arm body 524 may first contact the notch on the side of the mating slot 310 facing the magnetic rotating member 500, thereby preventing the driving end portion 521 from properly contacting the slot wall 311.

[0133] Through the above design, the present disclosure can further ensure that the driving arm body 524 does not contact the pusher 300 during the swinging process, ensuring that the driving end 521 contacts the groove wall 311, and further optimize the pushing effect of the driving arm 520 on the pusher 300. In addition, when the relay is a single-phase relay, the above design can also be selectively adopted.

[0134] As shown in Figures 13 and 16 , in one embodiment of the present disclosure, a rib 525 can be connected between the drive arm body 524 and the magnetic rotor 500. Rib 525 is tilted, and the tilt direction can be aligned with the avoidance chamfer 3111. This design enhances the structural strength of the drive arm 520 and ensures the structural stability of the relay. Furthermore, this design can also be selectively employed when the relay is a single-phase relay.

[0135] As shown in Figures 2 and 3, in one embodiment of the present disclosure, the relay proposed in this disclosure may further include a mounting bracket 600, which is fixedly mounted to the housing and is used to rotatably connect the magnetic rotating member 500. For example, the mounting bracket 600 is spaced apart from the bottom plate of the housing along a third direction Z, and the mounting bracket 600 is located on the side of the magnetic circuit portion and the magnetic rotating member 500 facing away from the bottom plate. In this manner, the magnetic rotating member 500 is rotatably connected to the bottom plate of the housing via a first rotating shaft R1, and the end of the first rotating shaft R1 away from the bottom plate of the housing is rotatably connected to the mounting bracket 600.

[0136] Through the above design, the present disclosure can use the fixing frame 600 to provide insulation function for the magnetic circuit part, and can also use the fixing frame 600 to provide protection for components such as the coil assembly 210 and the magnetic rotating member 500, thereby improving the structural stability of the relay.

[0137] Based on the design of the relay including the fixing frame 600, in one embodiment of the present disclosure, the fixing frame 600 and the housing can be plug-fitted, and the housing can limit the movement of the fixing frame 600 in the first direction X and the second direction Y. At the same time, the cover 700 and the housing can also cooperate to limit the movement of the fixing frame 600 in the third direction Z.

[0138] As shown in Figures 3 and 14 , based on the design of the relay including a fixed frame 600, in one embodiment of the present disclosure, the fixed frame 600 may include a first portion 610, a connecting portion 630, and a second portion 620, which are sequentially connected along the second direction Y. The first portion 610 is rotatably connected to the magnetic rotating member 500, the second portion 620 covers the coil assembly 210 along the third direction Z, and the connecting portion 630 is connected to the middle of the first portion 610 and the second portion 620 along the first direction X. The width of the connecting portion 630 in the first direction X is smaller than the width of the first portion 610 and the second portion 620 in the first direction X. On this basis, the pusher 300 is provided with an avoidance groove 320 to avoid the connecting portion 630.

[0139] Through the above-described design, the present disclosure utilizes the connecting portion 630 to integrate the two fixing frames corresponding to the magnetic rotor 500 and the coil assembly 210 into a single integral component. This reduces the number of parts, lowers the cost and difficulty of processing and assembly, and helps ensure the structural strength of the pusher 300. Furthermore, the present disclosure utilizes the design of the avoidance groove 320 to avoid the increase in dimensions in the third direction Z caused by the provision of the connecting portion 630, further facilitating a compact design.

[0140] As shown in Figures 2, 5, 6, and 9, in one embodiment of the present disclosure, the relay proposed in the present disclosure is a multi-phase relay. The contact portion includes at least two moving contact assemblies 410 and at least two static contact assemblies, with the at least two static contact assemblies spaced apart along a first direction X. Specifically, the housing is provided with at least two static contact assemblies (i.e., each static contact assembly includes two electrical connection terminals 423). The pusher 300 is connected to at least two moving contact assemblies 410, with each moving contact assembly 410 spaced apart along the first direction X. On this basis, the moving contact 411 of each moving contact assembly 410 faces the same side of the first direction X. In other words, when the pusher 300 moves, the moving contact 411 of each moving contact assembly 410 moves synchronously toward or away from the corresponding static contact assembly, i.e., the moving contact 411 and the static contact 421 of each contact portion are closed or opened synchronously.

[0141] In one embodiment of the present disclosure, when the relay is a multi-phase relay, taking a three-phase relay as an example, the three movable contact assemblies 410 can be fixedly connected to a support member 413. As shown in Figures 10 and 11, the two movable contacts 412 in each movable contact assembly 410 are fixedly connected to the corresponding support member 413. On this basis, only the support member 413 fixed to one of the movable contact assemblies 410 can be used to support the pusher 300 within the housing. For example, when the housing is provided with a first limiting structure (e.g., a supporting wall 110 and a first limiting column 710), the two enlarged areas of Figure 8 respectively show the support members 413 connected to the movable contacts 412 of the two movable contact assemblies 410. As shown in Figure 8, only the support arm 4131 of the left support member 413 is supported on the supporting wall 110; the support arm 4131 of the right support member 413 is not supported on the supporting wall 110, but has a gap with the supporting wall 110 in the third direction Z.

[0142] Through the above-described design, when applied to a three-phase relay, the present disclosure can achieve position limiting between a single moving contact assembly 410 and the housing in the third direction Z, while simultaneously coordinating the position limiting cooperation between the driving arm 520 and the pusher 300 in the third direction Z. This allows the movable components of the relay (including the pusher 300, each moving contact assembly 410, and each elastic member 414) to be suspended within the housing, thereby minimizing the frictional resistance generated between the movable components and the housing during movement, further reducing the driving force required to pass through the magnetic circuit, and further facilitating a reduction in the volume of the magnetic circuit. In some embodiments, when the relay is a multi-phase relay, only one moving contact 412 may be fixedly connected to the support member 413, and this is not limited to this embodiment.

[0143] As shown in FIG8 , in one embodiment of the present disclosure, when each movable contact assembly 410 is fixedly connected to a support member 413 and only one support member 413 participates in supporting the pusher 300 within the housing, the support member 413 to which the movable contact assembly 412 farthest from the magnetic circuit portion is fixed can be selected to participate in supporting the pusher 300 within the housing along the first direction X. Through the above design, the present disclosure can further optimize the force and enhance the motion stability and reliability of the movable component.

[0144] As shown in Figures 5 and 14 to 16 , in one embodiment of the present disclosure, the magnetic circuit portion may be located between two contact portions along the first direction X. Specifically, taking the example of a pusher 300 provided with a through slot for arranging the movable contact assembly 410 , along the first direction X, the mating slot 310 is located between the two through slots.

[0145] In one embodiment of the present disclosure, for each contact portion, when the moving contact 411 is disconnected from the static contact 421 , the sum of the gaps between the two moving contacts 411 of the moving contact 412 and their corresponding static contacts may be greater than or equal to 5.5 mm.

[0146] As shown in Figures 1 and 2, in one embodiment of the present disclosure, the relay further comprises a cover plate 700, which is disposed on the housing and serves to seal the opening of the housing. The cover plate 700 and the housing can be fastened together using a snap-fit ​​mechanism or assembled using connectors such as bolts. Furthermore, the cover plate 700 and the housing can be opened and closed along a third direction Z, along a first direction X, or along a second direction Y (e.g., a push-pull mechanism), or can be opened and closed using a flip mechanism with one side as the axis, without being limited to this embodiment.

[0147] 17 , FIG17 representatively shows a plan view of another exemplary embodiment of a relay that can embody the principles of the present disclosure, wherein a cover plate 700 is specifically omitted.

[0148] Different from the design of a three-phase relay in the embodiments shown in Figures 1 to 16, as shown in Figure 17, in one embodiment of the present disclosure, the relay proposed in the present disclosure can be a single-phase relay, and the contact part of the single-phase relay only includes a moving contact component 410 and a static contact component, that is, the housing is only provided with two electrical connection terminals 423, and the push member 300 is only connected to one moving contact component 410.

[0149] Referring to Figures 18 to 20, Figure 18 representatively shows a planar schematic diagram of a relay in another exemplary embodiment that can embody the principles of the present disclosure, in which the cover 700 is specifically omitted; Figure 19 representatively shows a planar schematic diagram of the relay in one state (the moving contact 411 is in contact with the static contact 421), in which the cover 700 and the fixing frame 600 are specifically omitted; Figure 20 representatively shows a planar schematic diagram of the relay in another state (the moving contact 411 is separated from the static contact 421), in which the cover 700 and the fixing frame 600 are specifically omitted.

[0150] Different from the design in which the driving arm 520 is fixedly connected to the magnetic rotating member 500 in the embodiments shown in Figures 13 and 17, as shown in Figures 18 to 20, in one embodiment of the present disclosure, the relay proposed in the present disclosure may also include a rotating arm 540, and the magnetic rotating member 500 can drive the pushing member 300 through the rotating arm 540.

[0151] The rotating arm 540 is rotatably connected to the housing via a second rotating axis R2 parallel to the first rotating axis R1 of the magnetic rotating member 500. The rotating arm 540 serves as the driving arm 520, with one end of the rotating arm 540 positioned in the mating groove 310 of the pusher 300, serving as the aforementioned driving end 521. Based on this, the relay proposed in the present disclosure can utilize the magnetic rotating member 500 to drive the rotating arm 540, allowing the rotating arm 540 to swing about the second rotating axis R2. During the swinging process of the rotating arm 540, the rotating arm 540 and the magnetic rotating member 500 also rotate relative to each other, and the rotating arm 540 and the magnetic rotating member 500 rotate in opposite directions.

[0152] Through the above design, the present disclosure can further reduce the rotation amplitude of the magnetic rotating member 500 by utilizing the design that the rotating arm 540 is rotatably connected to the magnetic rotating member 500 and rotates in opposite directions relative to each other.

[0153] As shown in Figures 19 and 20, in one embodiment of the present disclosure, the distance from the driving end 521 of the rotating arm 540 to the second rotating axis R2 is greater than the distance from the other end of the rotating arm 540 to the second rotating axis R2. Through this design, the present disclosure can achieve a relatively small angle by which the magnetic rotating member 500 drives the input end of the rotating arm 540, thereby achieving a relatively large swing of the output end of the rotating arm 540. This allows the dynamic contact assembly to generate a large stroke within a limited space. Furthermore, it can also reduce the driving force used by the magnetic circuit to drive the pusher 300, thereby further miniaturizing the magnetic circuit.

[0154] As shown in Figures 19 and 20, in one embodiment of the present disclosure, the magnetic rotating member 500 can be provided with a limiting slot 522, with one end of the rotating arm 540 positioned within the limiting slot 522. The limiting slot 522 includes a long slot wall 5221 and a short slot wall 5222 arranged opposite each other along a first direction X. Along the depth direction of the limiting slot 522, the long slot wall 5221 is longer than the short slot wall 5222. Through this design, the present disclosure can utilize the long slot wall 5221 and the short slot wall 5222 of the limiting slot 522 to limit the swing angle of the rotating arm 540, thereby preventing the rotating arm 540 from excessive rotation.

[0155] As shown in Figure 18, in one embodiment of the present disclosure, the relay proposed in the present disclosure may further include a fixed frame 600. The fixed frame 600 is spaced apart from the bottom plate of the housing and is located on the side of the magnetic circuit portion and the magnetic rotating member 500 facing away from the bottom plate. In this regard, the magnetic rotating member 500 is rotatably connected to the housing and the fixed frame 600 via a first rotating shaft R1. The end of the first rotating shaft R1 away from the housing bottom plate is rotatably connected to the fixed frame 600. The end of the second rotating shaft R2 away from the housing is rotatably connected to the fixed frame 600. The other end of the second rotating shaft R2 is rotatably connected to the housing bottom plate.

[0156] Through the above design, the present disclosure can use the fixing frame 600 to provide insulation function for the magnetic circuit part, and can also use the fixing frame 600 to provide protection for components such as the coil assembly 210 and the magnetic rotating member 500, thereby improving the structural stability of the relay.

[0157] Based on the design of the relay including the fixing frame 600, in one embodiment of the present disclosure, the fixing frame 600 and the housing can be plug-fitted, and the housing can limit the movement of the fixing frame 600 in the first direction X and the second direction Y. At the same time, the cover 700 and the housing can also cooperate to limit the movement of the fixing frame 600 in the third direction Z.

[0158] As shown in Figures 13, 17, or 18, in some embodiments of the present disclosure, the magnetic rotating member 500 is rotatably connected to the housing via a first rotating shaft R1, which can be located between the two contact arms 510. Based on this, the axis of the first rotating shaft R1 can be located on a line connecting the midpoints of the two contact arms 510. Accordingly, the two contact arms 510 have the same movement stroke when swinging forward to contact the yoke 220 and the same movement stroke when swinging backward to contact the yoke 220. This allows the two contact arms 510 to be symmetrically arranged on either side of the first rotating shaft R1, reducing structural complexity and production difficulties.

[0159] 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 employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are in no way limited to any details of the relays shown in the drawings or described in this specification or any components of the relays.

[0160] In summary, the relay proposed in the present disclosure includes a housing, a pusher 300 , a contact portion, and a magnetic circuit portion.

[0161] Among them, in the contact part, the dynamic contact component 410 includes a dynamic contact piece 412, which is a bridge-type dynamic contact piece extending along the second direction Y and having dynamic contacts 411 at both ends. It is installed as a whole and moves with the pushing member 300. When the pushing member drives the dynamic contact piece 412 to move, the dynamic contact piece 412 itself is not easy to deform. Therefore, even if a large contact gap is set between the dynamic contact component 410 and the static contact component 412, the cooperation between the dynamic contact piece 412 and the static contact 421 will not form a V-shaped opening, which is convenient for rapid arc disconnection.

[0162] At the same time, in this contact part, the total contact gap is equal to the sum of the gaps between the two moving contacts 411 of the moving contact piece 412 and their corresponding static contacts 421. The gap between a single moving contact 411 and the corresponding static contact 421 is half of the required total contact gap, and the movement stroke of the moving contact piece 412 relative to the static contact assembly is also half of the total contact gap, thereby achieving the requirement of a large contact gap with a small movement stroke, which is conducive to reducing the volume occupied by the contact part and reducing the required driving force of the magnetic circuit part, reducing the number of turns of the coil assembly 210 of the magnetic circuit part, reducing the volume of the coil assembly 210, and realizing the miniaturization design of the relay.

[0163] Since the dynamic contact 412 is a rigid structure, its structural stability is good and it is not easy to deform under normal conditions. It can also stably close with the static contact assembly in its movement direction. In the closed state, no trumpet-like angle is formed between the dynamic contacts 411 of the dynamic contact 412 and the corresponding static contacts 421 of the static contact assembly, ensuring that the arc is not easy to overflow and the service life of the product is guaranteed.

[0164] In addition, in actual use, since the current flows through the dynamic contact piece 412 rather than through the compression spring used to apply contact pressure to the dynamic contact piece 412 when the push piece 300 forms an overstroke, it is only necessary to ensure that the compression spring can provide elastic force, and there is no need to increase the thickness of the compression spring in order to pass a large current. The compression spring is thin and its own stress is small. Therefore, the magnetic circuit part only needs to use a smaller magnetic driving force to drive the push piece 300 to push the compression spring to deformation and form contact pressure, which is beneficial to reducing the volume of the magnetic circuit part. Based on this, the dynamic contact piece 412 no longer has a deformation requirement, so it can be set to a specific thickness according to the size of the load current that needs to be connected.

[0165] The magnetic circuit part adopts a combination of a coil assembly 210 and a magnetic rotor 500, that is, a traditional swinging armature assembly structure is adopted. The magnetic rotor includes a magnet and two armatures. The two armatures are respectively fixed to the two pole faces of the magnet and respectively constitute two contact arms 510. Since the magnet and the armature fit closely, the magnetic resistance between the two is small. Therefore, the overall magnetic efficiency of the magnetic circuit part is high, which is further conducive to reducing the volume of the magnetic circuit part and meets the miniaturization design requirements of the relay.

[0166] Based on the above design, the relay proposed in the present disclosure can simultaneously meet the requirements of high load, large contact gap and miniaturization.

[0167] For example, using the various exemplary embodiments described in this specification as examples, the relays proposed in this disclosure can at least meet the design requirements for a large contact gap between the moving and static contact assemblies and miniaturization. They can even meet the new State Grid standard for smart IoT meters, which requires a gap of at least 5.5mm between the moving and static contacts. Furthermore, through miniaturization, the relays proposed in this disclosure can increase the load capacity of a 100A relay by 1.5 times, to 150A, while maintaining the original size.

[0168] The present disclosure also provides an Internet of Things meter, which includes the relay described above in the present disclosure.

[0169] 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 the other components and / or steps described herein. Each component and / or each step of one 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", "an", and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including", and "having" are used to express open-ended inclusion and mean that in addition to the listed elements / components / etc., additional elements / components / etc. may be present. In addition, the terms "first" and "second", etc. in the claims and the specification are used only as labels and are not numerical limitations on their objects.

[0170] While the relays presented in this disclosure have 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 pushing member capable of moving relative to the housing along a first direction; The contact portion includes at least one dynamic contact component and at least one static contact component corresponding to the dynamic contact component, wherein the dynamic contact component includes a dynamic contact piece, which is integrally mounted and moves with the pusher, and extends in a second direction perpendicular to the first direction, and has dynamic contacts at both ends thereof in the second direction; each of the static contact components includes two electrical connection terminals for forming an electrical connection with the outside, each electrical connection terminal is provided with at least one static contact, and the static contact of each static contact component corresponds to the dynamic contact of one dynamic contact component; and The magnetic circuit part is arranged in the housing and includes a coil assembly and a magnetic rotating member; the magnetic rotating member is rotatably arranged in the housing, and is configured to accept the magnetic force of the coil assembly and swing within a preset swing range when the coil assembly is subjected to a forward pulse voltage and a reverse pulse voltage, and push the pushing member to move to drive the moving contact on the moving contact member and the static contact of the static contact assembly to close or open.

2. The relay according to claim 1, wherein: It also includes at least one supporting member, each of which is fixedly connected to one of the dynamic contact components or to the pushing member, and is supported on the housing along a third direction; the third direction is perpendicular to both the first direction and the second direction; the magnetic rotating member is supported on the housing along the third direction, and is also used to support the pushing member in the third direction; the pushing member is supported by the magnetic rotating member and the at least one supporting member and is suspended in the housing.

3. The relay according to claim 2, characterized in that The housing is provided with a first limiting structure, and the first limiting structure cooperates with the support member in limiting the position in the third direction to limit the degree of freedom of the support member in the third direction.

4. The relay according to claim 3, characterized in that The housing is further provided with a second limiting structure; the second limiting structure cooperates with the support member to limit the position in the second direction to limit the degree of freedom of the support member in the second direction.

5. The relay according to claim 4, characterized in that The shell includes a base and a cover plate fixed to each other; a bottom plate is provided on the side of the base away from the cover plate; the first limiting structure includes a supporting wall and a first limiting column, the supporting wall is arranged on the bottom plate, and the first limiting column is arranged on the cover plate of the shell, and at least a portion of the support member is respectively in contact with the supporting wall and the first limiting column on both sides along the third direction.

6. The relay according to claim 5, characterized in that The second limiting structure includes two retaining walls; the two retaining walls are both arranged on the bottom plate and are respectively located on both sides of the support member along the second direction, so as to respectively provide abutment for both sides of the support member and limit the freedom of the support member along the second direction.

7. The relay according to claim 4, characterized in that Each of the support members has two support arms; the two support arms extend out from both ends of the dynamic contact member along the second direction respectively, and the two support arms are elastic; corresponding to the end of each support arm, a second limit column and a third limit column are provided in the housing, the second limit column is located on the side of the support arm facing the corresponding static contact component, and the third limit column is located on the side of the support arm facing away from the corresponding static contact component; the second limit column and the third limit column are used to limit the displacement of the support arm in the first direction.

8. The relay according to claim 7, characterized in that When the moving contact is closed with the static contact, the support arm abuts against the second limiting column and stores energy to apply a force to the moving contact piece that enables it to move away from the corresponding static contact component; when the moving contact is disconnected with the static contact, the support arm abuts against the third limiting column and stores energy to apply a force to the moving contact piece that enables it to move toward the corresponding static contact component.

9. The relay according to claim 8, characterized in that The support member is fixedly connected to the dynamic contact assembly; the support arm is arranged obliquely relative to the second direction; in the first direction, one end of the support arm connected to the dynamic contact assembly is closer to the corresponding static contact assembly than the end thereof; wherein, along the second direction, a reverse bending portion is provided at the end of the support arm, and the reverse bending portion is arranged around the outer periphery of the second limiting column portion.

10. The relay according to claim 2, wherein: The movable contact member further comprises at least one elastic member corresponding to the movable contact assembly; the pushing member is provided with a through slot extending along the second direction; the movable contact member is inserted into the through slot and has a degree of freedom of movement relative to the pushing member only in the first direction, and a side of the movable contact member facing the static contact assembly contacts a side wall of the through slot in the first direction; Two ends of the elastic member along the first direction respectively abut against one side of the dynamic contact member facing away from the static contact assembly and the other side wall of the through slot in the first direction.

11. The relay according to claim 10, characterized in that The two sides of the movable contact component in the third direction respectively contact the two side groove walls of the through groove in the third direction, so that the movable contact component and the pushing member are relatively positioned in the third direction; the movable contact component is provided with positioning protrusions arranged in pairs, each pair of positioning protrusions is arranged at intervals along the second direction, and the two positioning protrusions in the same pair respectively abut against the two sides of the pushing member in the second direction, so that the movable contact member and the pushing member are relatively positioned in the second direction.

12. The relay according to claim 10, characterized in that Each of the dynamic contact components includes at least two dynamic contact pieces arranged along the third direction, and the electrical connection end of each of the static contact components includes at least two static contacts arranged along the third direction, and the at least two static contacts of each electrical connection end respectively correspond to the dynamic contacts of each dynamic contact piece located at the same end.

13. The relay according to claim 12, wherein: The elastic member includes a fixed portion and a deformable portion; the fixed portion is fixedly connected to the side of the dynamic contact member facing away from the static contact assembly; the fixed end of the deformable portion is fixedly connected to the fixed portion, and its free end abuts against the wall of the through groove; each of the dynamic contacts is connected to an elastic member; two adjacent elastic members in the third direction are connected by a connecting portion, and two adjacent dynamic contacts in the third direction can produce relative displacement along the first direction based on the elastic deformation ability of the connecting portions of the corresponding two elastic members.

14. The relay according to claim 13, characterized in that The support member is fixedly connected to each of the movable contact members, and the support member allows two adjacent movable contact members to generate relative displacement along the first direction.

15. The relay according to claim 1, wherein: Two ends of the coil assembly are arranged along the first direction and are respectively connected to a yoke, an end of the yoke away from the coil assembly is a first contact end, and the two first contact ends respectively extend to one side of the coil assembly in the second direction; The magnetic rotating member is located on one side of the coil assembly in the second direction, and includes two contact arms spaced apart along the second direction; both ends of the contact arms in the first direction are second contact ends, the two second contact ends of each contact arm correspond to the two first contact ends, and the two contact arms are respectively located on both sides of the yoke in the second direction; Wherein, the relay is configured to: control the power-on excitation of the coil assembly so that a magnetic force is generated between the first contact end and the second contact end to drive the magnetic rotating part to rotate, thereby driving the pushing part to move, thereby closing and opening the moving contact and the static contact.

16. The relay according to claim 15, characterized in that The magnetic rotating member is provided with a driving arm on one side along the second direction; the pushing member is provided with a matching groove, and the driving arm has a driving end; the driving end is located in the matching groove; wherein, the relay is configured to: drive the driving arm to swing when the magnetic rotating member rotates, so that the driving end pushes against the two side groove walls of the matching groove in the first direction, thereby driving the pushing member to move along the first direction.

17. The relay according to claim 16, characterized in that The driving end portion is respectively in contact with the two side walls of the matching groove in the third direction on both sides in the third direction, so that the driving arm and the pushing member are positioned relative to each other in the third direction.

18. The relay according to claim 16, wherein: When the driving end portion swings to any position relative to the pushing member, its width along the first direction is smaller than the width of the matching groove along the first direction, so that the driving arm has an idle stroke during the process of switching to abut against the two side groove walls of the matching groove along the first direction.

19. The relay according to claim 18, wherein: When the driving end portion swings at any position relative to the pushing member, the width of the driving end portion along the first direction accounts for 0.5 to 0.9 of the width of the matching groove along the first direction.

20. The relay according to claim 16, wherein When the driving end portion swings at any position relative to the pushing member, the contact between the driving end portion and the groove wall is line contact or point contact.

21. The relay according to claim 16, wherein: The relay also includes a fixing frame; the fixing frame is fixedly installed on the housing and is used for the magnetic rotating part to be rotatably connected, and has a first part, a second part and a connecting part that are sequentially connected along the second direction; the first part is for the magnetic rotating part to be rotatably connected; the second part covers the coil assembly along the third direction; the connecting part is connected to the middle part of the first part and the second part along the first direction and its width in the first direction is smaller than the width of the first part and the second part in the first direction; the pushing member is provided with an avoidance groove for avoiding the connecting part.

22. The relay according to claim 16, wherein: It also includes a rotating arm; the rotating arm is rotatably connected to the housing through a second rotating shaft parallel to the first rotating shaft of the magnetic rotating member; the rotating arm serves as the driving arm, and one end of the rotating arm constitutes the driving end and is located in the matching groove of the pushing member.

23. The relay according to claim 22, characterized in that A distance from the driving end of the rotating arm to the second rotating shaft is greater than a distance from the other end of the rotating arm to the second rotating shaft.

24. The relay according to claim 22, wherein: The magnetic rotating part is provided with a limiting groove; one end of the rotating arm is placed in the limiting groove; the limiting groove has a long groove wall and a short groove wall spaced apart along a first direction, and along the depth direction of the limiting groove, the length of the long groove wall is greater than the length of the short groove wall, and the long groove wall and the short groove wall are used to limit the swing angle of the rotating arm.

25. The relay according to claim 1, wherein Along the second direction, the lengths of the two parts of the movable contact member extending from both sides of the pushing member are equal.

26. The relay according to any one of claims 1 to 25, characterized in that: The relay is a single-phase relay, and the contact part includes a moving contact component and a static contact component.

27. The relay according to any one of claims 2 to 25, characterized in that: The relay is a multi-phase relay, the contact portion includes at least two dynamic contact components and at least two static contact components, the dynamic contact components are arranged at intervals along the first direction, and the dynamic contact components are installed on the pushing member.

28. The relay according to claim 27, characterized in that: Only one of the dynamic contact components is fixedly connected to the support member; or Each of the dynamic contact components is fixedly connected to the support member, and only one of the support members participates in supporting the pushing member in the housing.

29. The relay according to claim 28, characterized in that Each of the dynamic contact components is fixedly connected to the support member, and only one of the support members participates in supporting the pushing member in the housing; wherein, along the first direction, the support member fixed to the dynamic contact member farthest from the magnetic circuit part participates in supporting the pushing member in the housing.

30. The relay according to claim 27, wherein The magnetic circuit portion is located between two of the contact portions along the first direction.

31. The relay according to any one of claims 1 to 25, characterized in that: When the dynamic contact assembly is disconnected from the static contact assembly, the sum of the gaps between the two dynamic contacts at both ends of the dynamic contact and their corresponding static contacts is greater than or equal to 5.5 mm.

32. A table of things, characterized in that: Comprising the relay according to any one of claims 1 to 31.

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