Relay

Abstract

A relay, comprising a support (100), a contact part, a push-pull rod (320) and a magnetic circuit part, wherein the contact part comprises at least one pair of stationary conductive members (220), at least one movable contact bridge (232) and at least one elastic member (231); a stationary contact is provided on the side surface of each stationary conductive member (220) in a first direction (X); two ends of the elastic member (231) in a second direction (Y) are respectively a contact end (2311) and an assembly end (2312), the second direction (Y) being perpendicular to the first direction (X); the elastic member (231) is mounted on the support (100) via the assembly end (2312), and the movable contact bridge (232) is arranged on the side of the contact end (2311) facing the stationary conductive members (220); the push-pull rod (320) extends in the first direction (X), with one end thereof being connected to the magnetic circuit part, and the other end thereof being in push-pull fit with the contact end (2311); and the magnetic circuit part can drive the push-pull rod (320) to push and pull the elastic member (231) or the movable contact bridge (232) to move in the first direction (X), and the elastic member (231) is deformed when being pushed and pulled by the push-pull rod (320), and drives the movable contact bridge (232) to reset when the contact part switches from an on-state to an off-state.

Description

Relay

[0001] The present disclosure claims priority to Chinese patent applications No. 202422264648.1 and 202411295321.9, filed on September 14, 2024, the entire contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to a relay. BACKGROUND

[0003] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit), commonly used in automatic control circuits. It is actually a "automatic switch" that uses a small current to control a larger current. Therefore, it plays a role in automatic regulation, safety protection, and circuit conversion in circuits. With the continuous expansion of the application range of relays, relays are also developing in the direction of high load and miniaturization. The demand for high load requires relays to meet higher voltage requirements, specifically requiring relays to have larger contact gaps.

[0004] The contact part of an existing relay includes a moving spring sheet, a moving spring lead-out sheet, and a static spring lead-out sheet. The moving spring sheet is provided with a moving contact, one end of the moving spring sheet is fixedly connected with the moving spring lead-out sheet, and the moving spring sheet and the moving spring lead-out sheet are arranged at an included angle, and the other end of the moving spring sheet is drivingly connected with a magnetic circuit part. However, the rotating angle of the moving spring sheet of this design is small. In order to achieve a large contact gap, the moving spring sheet needs to form a large included angle with the moving spring lead-out sheet. At this time, a horn mouth is prone to occur in the contact closed state, which cannot guarantee the central arc, affects the service life of the relay, and at the same time, due to the need to consider the current carrying capacity and elasticity of the moving spring sheet, the moving spring sheet needs to use a material with high cost. SUMMARY

[0005] One main purpose of the present disclosure is to overcome at least one of the defects of the prior art, and to provide a relay with long service life and low material cost.

[0006] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0007] According to one aspect of the present disclosure, a relay is provided, wherein: the relay comprises a support, a contact part, a push-pull rod and a magnetic circuit part; the contact part comprises at least one pair of static conductive pieces, at least one dynamic contact bridge and at least one elastic piece; the static conductive pieces are provided with static contact points on their side faces in a first direction; the elastic piece is provided with a contact end and an assembly end at its two ends in a second direction, the second direction being perpendicular to the first direction, the assembly end of the elastic piece is assembled to the support, and the dynamic contact bridge is arranged on the side of the contact end facing the static conductive pieces; the push-pull rod extends in the first direction, one end of the push-pull rod is connected to the magnetic circuit part, and the other end of the push-pull rod is in push-pull cooperation with the contact end; wherein the magnetic circuit part can drive the push-pull rod to move in the first direction, so that the push-pull rod pushes and pulls the elastic piece or the dynamic contact bridge to move in the first direction, the elastic piece deforms when the push-pull rod pushes and pulls, and drives the dynamic contact bridge to reset when the contact part changes from a conducting state to an open state.

[0008] According to one embodiment of the present disclosure, the two static conductive pieces of the same pair are arranged in a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction.

[0009] According to one embodiment of the present disclosure, the contact part further comprises a reed, one end of the reed is connected to the elastic piece, and the other end of the reed is bent and extended away from the static conductive pieces; wherein the push-pull rod is provided with two push-pull blocks spaced apart in the first direction, the two push-pull blocks are respectively located on the side of the elastic piece away from the static contact points and the side of the dynamic contact bridge facing the static conductive pieces, and one of the push-pull blocks is used to push the other end of the reed away from the static conductive pieces.

[0010] According to one embodiment of the present disclosure, the contact end of the elastic piece is provided with a first through hole, the dynamic contact bridge is provided with a second through hole, the first through hole and the second through hole are in communication to form a through channel; and the push-pull rod passes through the through channel.

[0011] According to one embodiment of the present disclosure, one end of the reed is integrally connected to the hole wall of the first through hole.

[0012] According to one embodiment of the present disclosure, the side of the dynamic contact bridge facing the static conductive pieces is provided with two dynamic contact points, the two dynamic contact points are arranged in the third direction, and the two dynamic contact points are respectively used to contact and cooperate with the static contact points of the two static conductive pieces of the same pair; wherein the second through hole is located between the two dynamic contact points.

[0013] According to one of the embodiments of the present disclosure, two limiting protrusions are arranged on the side of the reed away from the static conductive part, and the two limiting protrusions are arranged along the third direction to limit the two sides of the push-pull block in the third direction when the push-pull block pushes against the reed.

[0014] According to one of the embodiments of the present disclosure, the support includes a base plate, the base plate is provided with a first slot, and the elastic member is connected with a first insertion piece at the assembly end, and the first insertion piece is inserted into the first slot.

[0015] According to one of the embodiments of the present disclosure, the material of the elastic member is stainless steel.

[0016] According to one of the embodiments of the present disclosure, the magnetic circuit part includes an armature assembly, the armature assembly is arranged on one side of the contact part in the first direction, and is rotatably arranged on the support via a rotating shaft extending along the third direction, the third direction is perpendicular to the first direction and perpendicular to the second direction, and the armature assembly has a driving end at one end in the second direction; one end of the push-pull rod is connected to the driving end, and the other end is in push-pull cooperation with the contact end of the elastic member; wherein the magnetic circuit part can drive the armature assembly to rotate so that the armature assembly drives the push-pull rod to move along the first direction.

[0017] According to one of the embodiments of the present disclosure, the support includes a base plate, the relay further includes an armature cover plate, and the base plate and the armature cover plate are both perpendicular to the third direction; the base plate is provided with two supports extending along the third direction, and the two supports are arranged along the second direction, the two supports and the base plate jointly form an accommodating space for accommodating a coil assembly and a yoke assembly of the magnetic circuit part; the armature cover plate is connected to the side of the support away from the base plate, the base plate and the armature cover plate are respectively provided with shaft holes corresponding in position, and the armature assembly is respectively provided with coaxial rotating shafts on the two sides in the third direction, and the two rotating shafts are rotatably arranged in the two shaft holes.

[0018] According to one of the embodiments of the present disclosure, the contact part comprises two pairs of the static conductive pieces, two dynamic contact bridges and two elastic pieces; the two pairs of the static conductive pieces are arranged in the second direction; one of the dynamic contact bridges is arranged on one side of one pair of the static conductive pieces in the first direction, and the other dynamic contact bridge is arranged on the other side of the other pair of the static conductive pieces in the first direction; the relay comprises two push-pull rods corresponding to the two dynamic contact bridges respectively; the magnetic circuit part can drive the two push-pull rods to move reversely synchronously in the first direction, so that the two dynamic contact bridges move reversely synchronously in the first direction, so that the two dynamic contact bridges are turned on or turned off at the same time.

[0019] According to one of the embodiments of the present disclosure, the two static conductive pieces in the same pair are arranged in the third direction, which is perpendicular to the first direction and perpendicular to the second direction; two static conductive pieces belonging to different pairs and located on the same side in the third direction are connected to form a static contact bridge.

[0020] According to one of the embodiments of the present disclosure, the static contact bridge has a first end portion and a second end portion arranged in the second direction; one of the static contact points is arranged on the side of the first end portion facing the magnetic circuit part, and the other static contact point is arranged on the side of the second end portion facing away from the magnetic circuit part; in the first direction, the second end portion is closer to the magnetic circuit part than the first end portion.

[0021] According to one of the embodiments of the present disclosure, the support comprises a base plate provided with an assembly table extending in the third direction, and the assembly table is provided with a second slot; the static contact bridge is provided with a second insertion piece in the middle portion in the second direction, and the second insertion piece is inserted into the second slot.

[0022] According to one of the embodiments of the present disclosure, in the on state of the relay, the current flows from one of the static conductive pieces to the dynamic contact bridge connected thereto, through the dynamic contact bridge to the static contact point of the static contact bridge, from one end portion of the static contact bridge to the other end portion in the second direction, through the static contact point of the static contact bridge to the other dynamic contact bridge connected thereto, and from the other dynamic contact bridge to the other static conductive piece connected thereto.

[0023] According to one of the embodiments of the present disclosure, the magnetic circuit part comprises an armature assembly; the armature assembly is located on one side of the contact part in the first direction and is rotatably arranged on the support via a rotating shaft extending in parallel to a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction, the armature assembly having a driving end at each end in the second direction; one end of each of the two push-pull rods is connected to the two driving ends respectively, and the other end of each of the two push-pull rods is in push-pull cooperation with the contact end of the two elastic members respectively; wherein the magnetic circuit part can drive the armature assembly to rotate so that the armature assembly drives the two push-pull rods to move synchronously and reversely along the first direction.

[0024] According to one of the embodiments of the present disclosure, the elastic member is provided with a third through hole at the assembly end; wherein, along the first direction, the elastic member closer to the armature assembly is a first elastic member, the other elastic member is a second elastic member, the push-pull rod in push-pull cooperation with the first elastic member is a first push-pull rod, and the other push-pull rod is a second push-pull rod, the second push-pull rod passing through the third through hole of the first elastic member.

[0025] According to one of the embodiments of the present disclosure, the third through hole is trapezoidal or triangular, and the large end of the trapezoid or triangle faces the contact end.

[0026] According to one of the embodiments of the present disclosure, the two elastic members are two components that are completely identical in structure and symmetrically arranged in space, and the symmetry axis is parallel to a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction.

[0027] According to one of the embodiments of the present disclosure, the two ends of the moving contact bridge in a third direction correspond to the static contact points of a pair of static conductive members located on the same side in the second direction respectively, the third direction being perpendicular to the first direction and perpendicular to the second direction.

[0028] From the above technical solutions, the relay proposed by the present disclosure has the following advantages and positive effects:

[0029] The contact part of the relay provided by the present disclosure comprises at least one pair of static conductive pieces, at least one dynamic contact bridge, and at least one elastic piece. The static conductive piece is provided with a static contact point on the side in the first direction. The elastic piece is provided with a contact end and an assembly end at both ends in the second direction, and the second direction is perpendicular to the first direction. The elastic piece is assembled to the support with the assembly end. The dynamic contact bridge is arranged on the side of the contact end facing the static conductive piece. The push-pull rod extends in the first direction, and one end of the push-pull rod is connected to the magnetic circuit part, and the other end of the push-pull rod is in push-pull cooperation with the contact end. The magnetic circuit part can drive the push-pull rod to push and pull the elastic piece or the dynamic contact bridge to move in the first direction. The elastic piece deforms when the push-pull rod pushes and pulls, and drives the dynamic contact bridge to reset when the contact part changes from the on state to the off state. Through the above structure design, the present disclosure can realize the reset off of the dynamic contact bridge after the closure by using the elastic piece. Since the dynamic contact bridge and the elastic piece are combined, the dynamic contact bridge is the current-carrying piece, and the elastic piece does not carry current. Accordingly, while increasing the contact gap by adjusting the position of the elastic piece, the trumpet mouth in the off state of the contact can be avoided, the central arc can be ensured, and the service life of the relay can be prolonged. In addition, since the elastic piece does not carry current and only needs to provide elastic force, the elastic piece can be made of low-cost material without considering its conductivity.

[0030] In an embodiment of the present disclosure, the contact part comprises a reed, one end of the reed is connected to the elastic piece, and the other end of the reed is bent and extended away from the static conductive piece. The push-pull rod is provided with two push-pull blocks spaced apart in the first direction, and the two push-pull blocks are respectively located on the side of the elastic piece away from the static contact point and the side of the dynamic contact bridge facing the static conductive piece. One of the two push-pull blocks is used to push the other end of the reed away from the static conductive piece. Through the above structure design, the present disclosure can utilize the deformation pressure of the flexible closure of the reed, and the pressure can be adjusted by adjusting the slotting depth and width size of the reed.

[0031] In an embodiment of the present disclosure, the contact end of the elastic piece is provided with a first through hole, the dynamic contact bridge is provided with a second through hole, and the first through hole and the second through hole are communicated to form a through channel. The push-pull rod passes through the through channel, and the push-pull rod is provided with two push-pull blocks spaced apart in the first direction. The two push-pull blocks are respectively located on the side of the elastic piece away from the second static contact point and the side of the dynamic contact bridge facing the static contact bridge. The push-pull rod can push and pull the elastic piece or the dynamic contact bridge through the push-pull blocks to realize the push and pull of the contact end. Through the above structure design, the present disclosure utilizes the through holes respectively arranged in the corresponding positions of the elastic piece and the dynamic contact bridge to form the through channel for the push-pull rod to pass through, which avoids arranging the push-pull rod on the outside of the elastic piece and the dynamic contact bridge, and is beneficial to reducing the space occupation. BRIEF DESCRIPTION OF DRAWINGS

[0032] The various objects, features and advantages of the present disclosure will become more apparent from the following detailed description and accompanying drawings. The drawings are only for the purpose of illustrating preferred embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. In the drawings:

[0033] FIGS. 1 and 2 are perspective structural schematic views of a part of a structure of a relay, respectively, according to an exemplary embodiment;

[0034] FIG. 3 is a side view of FIG. 1;

[0035] FIGS. 4 and 5 are sectional views taken along a straight line A-A in FIG. 3, respectively, in two different states;

[0036] FIG. 6 is a sectional schematic view taken along a straight line B-B in FIG. 4;

[0037] FIG. 7 is a perspective exploded schematic view of FIG. 1;

[0038] FIGS. 8 and 9 are perspective enlarged schematic views of a contact part of a relay, respectively, in two different states;

[0039] FIGS. 10 and 11 are perspective structural schematic views of the part of structure shown in FIG. 8, respectively, in two different views;

[0040] FIG. 12 is a plan schematic view of FIG. 11;

[0041] FIGS. 13 and 14 are perspective enlarged schematic views of a movable contact bridge, respectively, in two different views;

[0042] FIG. 15 is a perspective enlarged schematic view of a fixed contact bridge;

[0043] FIG. 16 is a perspective enlarged schematic view of a magnetic circuit part of a relay.

[0044] FIG. 17 is a perspective structural schematic view of a support;

[0045] FIG. 18 is a perspective structural schematic view of a contact part of a relay according to another exemplary embodiment;

[0046] FIG. 19 is a perspective structural schematic view of a contact part of a relay according to still another exemplary embodiment.

[0047] In the drawings: 100, support; 110, base plate; 111, support; 112, shaft hole; 113, first slot; 114, assembly platform; 115, second slot; 120, armature cover plate; 121, shaft hole; 210, static contact bridge; 211, second static contact point; 212, first end; 213, second end; 214, second insertion piece; 220, static conductive piece; 221, first static contact point; 231, elastic piece; 2311, contact end; 23111, first through hole; 2312, assembly end; 23121, third through hole; 2313, spring piece; 23131, limiting protrusion; 2314, first insertion piece; 232, moving contact bridge; 2321, second through hole; 2322, moving contact point; 310, armature assembly; 311, rotating shaft; 320, push-pull rod; 321, push-pull block; 330, coil assembly; 340, yoke assembly; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0048] Typical embodiments embodying the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can be varied in a wide range of embodiments, none of which depart from the scope of the present disclosure, and that the description and drawings are to be considered illustrative in nature, and not restrictive.

[0049] In the following description of various example embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the present disclosure can be implemented. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps can be utilized and structural and functional modifications can be made without departing from the scope of the present disclosure. Also, while the terms "over," "between," "inside," "on," and the like can be used in the following description to describe relative positioning of various example features and elements, these terms are used in this specification to merely facilitate description of the examples, and do not limit the scope of the present disclosure to relative positioning in the examples described herein.

[0050] Referring to FIG. 1 and FIG. 2, which respectively representatively show a perspective structural schematic diagram of a part of structure of a relay proposed by the present disclosure in two different visual angles. In this example embodiment, the relay proposed by the present disclosure is explained by taking the application in the charging and energy storage scene as an example. It is easy for those skilled in the art to understand that various modifications, additions, substitutions, deletions or other changes can be made to the following detailed description in order to apply the relevant design of the present disclosure to other types of relays, which are still within the scope of the principle of the relay proposed by the present disclosure.

[0051] As shown in FIG. 1 and FIG. 2, in an embodiment of the present disclosure, the relay proposed by the present disclosure comprises a support 100, a contact portion and a magnetic circuit portion, both of which are arranged on the support 100, and a push-pull rod 320. For reference, FIG. 3 shows a side view of FIG. 1; FIG. 4 and FIG. 5 respectively show cross-sectional views along the straight line A-A in FIG. 3 in two different states; FIG. 6 shows a cross-sectional view along the straight line B-B in FIG. 4; FIG. 7 shows an exploded view of FIG. 1; FIG. 8 and FIG. 9 respectively show enlarged views of the contact portion in two different states; FIG. 10 and FIG. 11 respectively show the structure of the combination of the two movable contact bridges 232 and the two push-pull rods 320 in two different perspectives; FIG. 12 shows a plan view of FIG. 11; FIG. 13 and FIG. 14 respectively show enlarged views of the movable contact bridge 232 in two different perspectives; FIG. 15 shows an enlarged view of the stationary contact bridge 210; FIG. 16 shows an enlarged view of the magnetic circuit portion; and FIG. 17 shows an enlarged view of the support 100. For the two different states in the above-mentioned figures, they are respectively the contact opening state and the contact closing state of the relay, for example, FIG. 4 and FIG. 8 are both in the contact opening state, and FIG. 5 and FIG. 9 are both in the contact closing state. The structure, connection mode and functional relationship of each main component of the relay proposed by the present disclosure will be described in detail below in combination with the above-mentioned figures.

[0052] As shown in FIGS. 1-9 and 16, in an embodiment of the present disclosure, the contact portion includes a static contact bridge 210, two static conductive pieces 220, two dynamic contact bridges 232, and two elastic members 231. The contact portion can be understood as including two pairs of static conductive pieces 220 (and then the dynamic contact bridge 232 and the elastic member 231 can each be two), and two static conductive pieces 220 located on the same side in the third direction Z and belonging to different pairs respectively can be connected as one to form the static contact bridge 210, the static contact bridge 210 is provided with two second static contact points 211, which can be, for example, integrally formed with the static contact bridge 210, and the two second static contact points 211 are respectively located on both sides of the static contact bridge 210 in the first direction X and are arranged at intervals along the second direction Y perpendicular to the first direction X. In this embodiment, only one second static contact point 211 is included on each side of the static contact bridge 210, and in some embodiments, the second static contact point 211 on each side of the static contact bridge 210 can further include at least two sub-contact points. The two static conductive pieces 220 are arranged at intervals along the third direction Z, which is perpendicular to the first direction X and perpendicular to the second direction Y, and in the second direction Y, the two static conductive pieces 220 are arranged correspondingly with the two second static contact points 211. One side of the static conductive piece 220 in the first direction X can also be provided with a static contact point (hereinafter referred to as a first static contact point 221), which can be, for example, integrally formed with the static conductive piece 220, and the first static contact point 221 of the static conductive piece 220 and the corresponding second static contact point 211 (for example, located on the same side in the second direction Y) are located on the same side in the first direction X, that is, they jointly face one dynamic contact bridge 232. One dynamic contact bridge 232 is arranged on one side of the first end 212 of the static contact bridge 210 and one static conductive piece 220 (i.e., one pair of static conductive pieces) in the first direction X, and the other dynamic contact bridge 232 is arranged on the other side of the second end 213 of the static contact bridge 210 and the other static conductive piece 220 (i.e., the other pair of static conductive pieces) in the first direction X. The elastic member 231 has two end portions in the second direction Y, which are respectively a contact end portion 2311 and an assembly end portion 2312, and the elastic member 231 is assembled to the support 100 with the assembly end portion 2312, and the dynamic contact bridge 232 is arranged on the side of the contact end portion 2311 facing the static contact bridge 210 and the static conductive piece 220. On this basis, the elastic member 231 deforms when the dynamic contact bridge 232 is driven to move in the magnetic circuit portion, and the elastic member 231 accumulates elastic potential energy due to its own deformation during this process, and when the contact portion changes from the on state to the off state, the elastic member 231 releases the elastic potential energy to drive the dynamic contact bridge 232 to reset. In this embodiment, the push-pull rod 320 can be two, and the push-pull rod 320 extends along the first direction X, and one end of each of the two push-pull rods 320 is connected to the two driving end portions, and the other end of each of the two push-pull rods 320 is in push-pull cooperation with the contact end portion 2311 of the two elastic members 231, respectively.Accordingly, the magnetic circuit portion can drive the armature assembly 310 to rotate, so that the armature assembly 310 drives the two push-pull rods 320 to synchronously move in the first direction X in the reverse direction. It should be noted that in some embodiments, when the relay of the present disclosure adopts the two groups of bridge contacts described above, the two groups of bridge contacts can also adopt a design in which one group is opened while the other group is closed, for example, the magnetic circuit portion can respectively drive the two push-pull rods 320 to synchronously move in the first direction X in the same direction, and the present embodiment is not limited thereto. The magnetic circuit portion can drive the push-pull rod 320 to move in the first direction X, so that the push-pull rod 320 pushes and pulls the elastic member 231 or the movable contact bridge 232 to move the movable contact bridge 232 in the first direction X. The elastic member 231 is deformed when the push-pull rod 320 is pushed and pulled, so as to realize contact closing, and drives the movable contact bridge 232 to reset when the pushing and pulling of the push-pull rod 320 is weakened or disappears, so as to realize contact opening.

[0053] Through the above structural design, the present disclosure can realize the reset opening of the movable contact bridge 232 after closing by using the elastic member 231. Moreover, the combination design of the movable contact bridge 232 and the elastic member 231 is adopted, in which only the movable contact bridge 232 is used as a current-carrying member, that is, the elastic member 231 does not provide current-carrying, so as to realize the increase of the contact gap by adjusting the position of the elastic member 231 while avoiding the occurrence of the horn mouth (for example, the conversion ratio of the stroke of the armature assembly 310 to the contact gap is 1:1) in the contact opening state, ensuring the central arc, and prolonging the service life of the relay. Moreover, since the present disclosure can realize the increase of the contact gap compared with the prior art, that is, the action stroke of the movable contact bridge 232 is shorter, so that the present disclosure can reduce the deformation amplitude of the elastic member 231 when the elastic member 231 is applied, reduce metal fatigue, and be beneficial to prolong the service life of the elastic member. In addition, since the elastic member 231 does not carry current but only needs to provide elastic force, the elastic member 231 can adopt a low-cost material such as stainless steel, without considering the conductivity, and the elastic member 231 only needs to ensure the force value, which can further reduce the occupied space of the elastic member 231. Moreover, since the elastic member 231 does not carry current, the present disclosure does not need to make the elastic member 231 larger and thicker in order to match the current, that is, the counterforce of the elastic member 231 can be set smaller, and the magnetic circuit portion does not need to match a larger driving force, thereby reducing the volume of the magnetic circuit portion. On the other hand, since the elastic member 231 does not carry current, only the cross sections of the movable contact bridge 232, the static contact bridge 210 and the static conductor 220 need to be adjusted for different load currents, and the elastic member 231 and the magnetic circuit portion do not need to be adjusted synchronously, so as to enhance the versatility of the relay (it is more advantageous for the subsequent series of current improvement to be carried out in parallel without changing the magnetic circuit portion). In addition, the present disclosure utilizes the combination design of the elastic member 231 and the movable contact bridge 232, which is equivalent to setting a rigid gasket for the contact end 2311 of the elastic member 231, so as to increase the stiffness of the contact head, which is beneficial to realize the purpose of fast breaking of the contact.

[0054] Furthermore, when the contact part comprises the static contact bridge 210, the two static conductive pieces 220 and the two dynamic contact bridges 232, the present disclosure can provide a contact part with a bridge structure, by which the contact gap is extended while the arc voltage is increased, by which the arc static volt-ampere characteristic is improved, which is conducive to fast arc extinction and reduces contact ablation. Moreover, the present disclosure can reduce the gap of a single set of contacts while extending the contact gap, thereby reducing the occupied space of the contact part and shortening the movement stroke of the dynamic contact bridge 232, reducing the driving force required to be provided by the magnetic circuit part, thereby reducing the volume of the magnetic circuit part, so that the relay meets the design requirements of miniaturization. On this basis, the present disclosure sets the two dynamic contact bridges 232 on the two sides of the static contact bridge 210 and the two static conductive pieces 220, respectively, thereby effectively isolating the arcs generated by the two dynamic contact bridges 232 on both sides, avoiding the mutual influence caused by the arc generated by the bridge contact.

[0055] Specifically, in the on state of the relay, the current flows from one static conductive piece 220 to the dynamic contact bridge 232 connected thereto, through the dynamic contact bridge 232 to the second static contact 211 connected thereto, from one end of the static contact bridge 210 in the second direction Y to the other end, through the second static contact 211 of the other end to the other dynamic contact bridge 232 connected thereto, and from the other dynamic contact bridge 232 to the other static conductive piece 220 connected thereto. Through the above structural design, the present disclosure can realize that the contact gap of the relay is four times that of a single set of contacts. For example, if the single contact gap is 2 mm, the contact gap of the relay can satisfy 8 mm, and the specific value of the above gap can be adjusted by stroke control. At the same time, when the contacts are separated, the four contacts become four breaks, and arcs are generated at the four breaks, respectively. Therefore, by increasing the number of breaks, the present disclosure realizes that the four breaks are simultaneously disconnected, forming four arcs. Compared with the existing scheme with a double-break structure, the present disclosure can double the number of arc segments. Among the four arcs, each segment has a cathode and anode voltage drop, i.e., a total of eight side voltage drops, so that the present disclosure can double the side voltage drop. In addition, under the condition that the contact opening distance is constant, the increase in the number of arc segments increases the sum of the lengths of the arcs by one, i.e., the total length of the arc column region increases, the arc column region voltage drop increases by one, and the arc voltage increases significantly, thereby improving the arc static volt-ampere characteristic, which is conducive to fast arc extinction and reduces contact ablation, thereby improving the life and pressure and current resistance of the contactor.

[0056] It should be noted that the contact portion in the embodiments shown in FIGS. 1-17 includes the stationary contact bridge 210, the two stationary conductive members 220, and the two movable contact bridges 232. It should be understood that in other exemplary embodiments consistent with the principles of the present disclosure, based on the basic concept of the "combination design of the elastic member 231 and the movable contact bridge 232" adopted in the present disclosure, the contact portion can also have other structural forms, for example, the contact portion is not limited to necessarily including the stationary contact bridge 210, or is not limited to including two movable contact bridges 232, and the like, which will be described in detail in other exemplary embodiments described below in connection with FIGS. 18 and 19.

[0057] In an embodiment of the present disclosure, the movable contact bridge 232 can be fixed to the contact end portion 2311 of the elastic member 231 in a riveting manner. In some embodiments, the movable contact bridge 232 and the elastic member 231 can also be assembled and connected in other manners, and are not limited to the present embodiment.

[0058] As shown in FIGS. 7-14, in an embodiment of the present disclosure, the contact portion can further include a spring leaf 2313, one end of the spring leaf 2313 being connected to the elastic member 231, and the other end of the spring leaf 2313 being bent and extended away from the stationary conductive member 220 (or the stationary contact bridge 210). On this basis, the push-pull rod 320 can be provided with two push-pull blocks 321 spaced apart along the first direction X, the two push-pull blocks 321 being respectively located on the side of the elastic member 231 away from the stationary contact point and the side of the movable contact bridge 232 facing the stationary conductive member 220, and one of the push-pull blocks 321 being used to push against the side of the other end of the spring leaf 2313 away from the stationary conductive member 220. Through the above structural design, the present disclosure can utilize the deformation of the flexible closed spring leaf 2313 to generate pressure, and the pressure can be adjusted by adjusting the slot depth and width dimensions of the spring leaf 2313, and the elastic member 231 provides the contact pressure in the closed state and the reset force in the open state through the deformation of the spring leaf 2313, matches the suction force in the open state and the closed state, and does not need to design additional parts to provide the reset force.

[0059] As shown in FIGS. 7 and 8, based on the design that the contact portion comprises the spring leaf 2313, in an embodiment of the present disclosure, the contact end 2311 of the elastic member 231 can be provided with a first through hole 23111, the movable contact bridge 232 can be provided with a second through hole 2321, the first through hole 23111 and the second through hole 2321 are in communication to form a through channel. Accordingly, the push-pull rod 320 can pass through the through channel, and the push-pull rod 320 is provided with two push-pull blocks 321 spaced apart along the first direction X, the two push-pull blocks 321 are respectively located on the side of the elastic member 231 away from the second stationary contact 211 and the side of the movable contact bridge 232 facing the stationary contact bridge 210, and the push-pull rod 320 can push the elastic member 231 or the movable contact bridge 232 via the push-pull blocks 321 to realize the pushing and pulling of the contact end 2311. Through the above structural design, the present disclosure utilizes the through holes respectively formed in the corresponding positions of the elastic member 231 and the movable contact bridge 232 to form a through channel, thereby realizing the arrangement of the push-pull rod 320, avoiding the arrangement of the push-pull rod 320 on the outside (for example, on the side in the second direction Y or the third direction Z) of the elastic member 231 and the movable contact bridge 232, and facilitating the reduction of space occupation. In some embodiments, the push-pull rod 320 can also be arranged on the outside of the elastic member 231 and the movable contact bridge 232, and the elastic member 231 and the movable contact bridge 232 do not need to be provided with the above-mentioned through holes. At this time, the push-pull rod 320 can still be provided with the above-mentioned push-pull blocks 321, and the structure and position of the push-pull blocks 321 can be adjusted to realize specific pushing and pulling actions, which are not limited to the embodiment.

[0060] As shown in FIGS. 7 to 14, based on the design that the elastic member 231 is provided with the first through hole 23111, in an embodiment of the present disclosure, one end of the spring leaf 2313 can be integrally connected to the hole wall of the first through hole 23111, and the other end of the spring leaf 2313 is bent and extended away from the stationary contact bridge 210. Accordingly, one push-pull block 321 of the push-pull rod 320 is used to push the side of the other end of the spring leaf 2313 away from the stationary contact bridge 210. In some embodiments, the spring leaf 2313 can also be integrally connected to other positions of the elastic member 231, or the spring leaf 2313 and the elastic member 231 are not limited to an integral structure, for example, the spring leaf 2313 and the elastic member 231 can be two connected members, which are not limited to the embodiment.

[0061] As shown in FIGS. 8, 12 and 13, based on the design that the elastic member 231 comprises the spring leaf 2313, in an embodiment of the present disclosure, the side of the spring leaf 2313 away from the stationary contact bridge 210 can be provided with two limiting protrusions 23131, the two limiting protrusions 23131 are arranged spaced apart along the third direction Z, and the two limiting protrusions 23131 can limit the two sides of the push-pull block 321 in the third direction Z when the push-pull block 321 pushes the spring leaf 2313. Through the above design, the present disclosure can further improve the stability and accuracy of the pushing and pulling action of the push-pull rod 320.

[0062] As shown in FIGS. 7-14, based on the design that the movable contact bridge 232 is provided with the second through hole 2321, in an embodiment of the present disclosure, the side of the movable contact bridge 232 facing the stationary contact bridge 210 is provided with two movable contact points 2322, which are arranged at intervals along the third direction Z, that is, one of the movable contact points 2322 is in contact with one of the second stationary contact points 211 of the stationary contact bridge 210, and the other movable contact point 2322 is in contact with one of the stationary conductive members 220. On this basis, the second through hole 2321 can be located between the two movable contact points 2322. Through the above structural design, the present disclosure can make the pressure more uniform when the push-pull rod 320 pushes and pulls the movable contact bridge 232, further improving the stability of the push-pull action. In some embodiments, the second through hole 2321 can also be arranged at other positions of the movable contact bridge 232, for example, it can be located on one side of the two movable contact points 2322 in the second direction Y, or it can be located on the side of one of the movable contact points 2322 away from the other movable contact point 2322 in the third direction Z, which is not limited by the above embodiment.

[0063] As shown in FIGS. 7, 11, 13 and 14, based on the design that the contact part includes the stationary contact bridge 210, the two stationary conductive members 220 and the two movable contact bridges 232, and based on the design that the push-pull rod 320 passes through the through channel, in an embodiment of the present disclosure, the elastic member 231 can be provided with a third through hole 23121 at the assembly end 2312. Among them, along the first direction X, the elastic member 231 relatively close to the armature assembly 310 is defined as the first elastic member 231, and the other elastic member 231 is defined as the second elastic member 231, and the push-pull rod 320 in push-pull cooperation with the first elastic member 231 is defined as the first push-pull rod 320, and the other push-pull rod 320 is defined as the second push-pull rod 320, on this basis, the second push-pull rod 320 can pass through the third through hole 23121 of the first elastic member 231. Through the above structural design, the present disclosure can use the third through hole 23121 for the push-pull rod 320 to pass through, avoiding the structural interference between the push-pull rod 320 and the other elastic member 231 when the present disclosure adopts the design that the push-pull rod 320 is cooperated with the through channel. At the same time, the present disclosure can adjust the pressure generated by the deformation of the flexible closure of the spring sheet 2313 by adjusting the shape and length-width size of the third through hole 23121.

[0064] As shown in FIGS. 7, 11, 13 and 14, based on the design that the elastic member 231 is provided with the third through hole 23121, in an embodiment of the present disclosure, the third through hole 23121 can be trapezoidal or triangular, and the large end of the trapezoidal or triangular shape faces the contact end 2311.

[0065] As shown in FIGS. 1-9 and 16, based on the design that the contact part includes the stationary contact bridge 210, the two stationary conductive pieces 220, and the two movable contact bridges 232, in an embodiment of the present disclosure, the magnetic circuit part can include an armature assembly 310. The armature assembly 310 is located on one side of the contact part in the first direction X, and is rotatably arranged on the support 100 via a rotating shaft 311 extending in parallel to the third direction Z. The two ends of the armature assembly 310 in the second direction Y respectively have a driving end. Through the above structural design, the present disclosure can realize that the magnetic circuit part drives the two push-pull rods 320 simultaneously through the armature assembly 310, so as to realize the synchronous closing and opening of the two groups of contacts, and can ensure that the contact action has better synchronism, and the structure is simple and occupies less space.

[0066] As shown in FIGS. 10-12, in an embodiment of the present disclosure, the two elastic members 231 can be two components which are completely identical in structure and symmetrically arranged in space, and the symmetry axis of the two elastic members 231 extends in parallel to the third direction Z. In particular, when the elastic member 231 is provided with the third through hole 23121, the third through hole 23121 of one elastic member 231 (for example, the first elastic member 231 described above) can be used for passing through the other push-pull rod 320 (for example, the second push-pull rod 320 described above), and the third through hole 23121 of the other elastic member 231 (for example, the second elastic member 231 described above) is not used for passing through the push-pull rod 320 (for example, the first push-pull rod 320 does not need to pass through the third through hole 23121 of the second elastic member 231). At this time, when the two elastic members 231 still adopt the completely identical design (that is, both are provided with the third through hole 23121), the present disclosure does not need to distinguish the elastic member 231 with the third through hole 23121 and the elastic member 231 without the third through hole 23121 when assembling the two elastic members 231, so as to further reduce the assembly difficulty and improve the efficiency.

[0067] In an embodiment of the present disclosure, the material of the elastic member 231 can be stainless steel. Through the above design, since the elastic member 231 proposed by the present disclosure does not need to consider current carrying, stainless steel can be used, so as to reduce the material cost.

[0068] As shown in FIG. 1, FIG. 4, FIG. 5 and FIG. 17, based on the design that the magnetic circuit part comprises the armature assembly 310, in an embodiment of the present disclosure, the support 100 can comprise a base plate 110, and the relay proposed by the present disclosure can further comprise an armature cover plate 120, both the base plate 110 and the armature cover plate 120 being perpendicular to the third direction Z. Specifically, the base plate 110 is provided with two brackets 111 extending along the third direction Z, and the two brackets 111 are arranged at intervals along the second direction Y, and the two brackets 111 and the base plate 110 jointly form an accommodation space for accommodating the coil assembly 330 and the yoke assembly 340 of the magnetic circuit part. The armature cover plate 120 is connected to the side of the bracket 111 away from the base plate 110, and the base plate 110 and the armature cover plate 120 are respectively provided with shaft holes 112, 121 corresponding in position, and the two sides of the armature assembly 310 in the third direction Z are respectively provided with coaxial rotating shafts 311, and the two rotating shafts 311 are respectively rotatably arranged in the two shaft holes 112, 121.

[0069] As shown in FIG. 13, FIG. 14 and FIG. 17, in an embodiment of the present disclosure, the support 100 comprises the base plate 110, and the base plate 110 can be provided with a first slot 113, and correspondingly, the elastic member 231 can be connected with a first insertion piece 2314 at the assembly end 2312, and the first insertion piece 2314 is inserted into the first slot 113. Through the above structural design, the present disclosure can realize the insertion assembly of the elastic member 231 on the base plate 110 by using the first insertion piece 2314 and the first slot 113, which is convenient to operate and has high efficiency. In other embodiments, the elastic member 231 can also be assembled with the support 100 in other ways, which is not limited to the present embodiment.

[0070] As shown in FIG. 3 and FIG. 8, based on the design that the contact part comprises the static contact bridge 210, the two static conductive members 220 and the two dynamic contact bridges 232, in an embodiment of the present disclosure, the two ends (for example, the two dynamic contact points 2322 of the same dynamic contact bridge 232) of the dynamic contact bridge 232 in the third direction Z can correspond to the second static contact point 211 (i.e. the end of the static contact bridge 210) and the static conductive member 220 located on the same side in the second direction Y respectively, avoiding the situation that one side is closed first, and without increasing the space occupation in the second direction Y. Accordingly, the two dynamic contact bridges 232 can realize the arrangement form of being arranged at intervals in the second direction Y, which can reduce the structural complexity and assembly difficulty. In some embodiments, the two ends (for example, the two dynamic contact points 2322 of the same dynamic contact bridge 232) of the dynamic contact bridge 232 can also correspond to the second static contact point 211 (i.e. the end of the static contact bridge 210) and the static conductive member 220 located on different sides in the second direction Y respectively, which is not limited to the present embodiment.

[0071] As shown in FIG. 4, FIG. 5, FIG. 8 and FIG. 9, based on the design that the contact portion comprises the static contact bridge 210, the two static conductive pieces 220 and the two movable contact bridges 232, in an embodiment of the present disclosure, the static contact bridge 210 has a first end portion 212 and a second end portion 213 which are spaced apart in the second direction Y, one second static contact point 211 of the static contact bridge 210 is arranged on the side of the first end portion 212 facing the magnetic circuit portion, and another second static contact point 211 of the static contact bridge 210 is arranged on the side of the second end portion 213 facing away from the magnetic circuit portion. On this basis, along the first direction X, the second end portion 213 can be closer to the magnetic circuit portion than the first end portion 212. Through the above structural design, the present disclosure can stagger the arrangement of the two second static contact points 211 on the two sides of the static contact bridge 210 in the first direction X, and accordingly, the two second static contact points 211 are respectively close to the respective movable contact bridges 232 they cooperate with, which is conducive to further reducing the interval of the two groups of movable contact bridges 232 in the first direction X, thereby reducing the space occupation of the contact portion in the first direction X.

[0072] As shown in FIG. 15 and FIG. 17, based on the design that the contact portion comprises the static contact bridge 210, the two static conductive pieces 220 and the two movable contact bridges 232, in an embodiment of the present disclosure, the relay further comprises a support 100, the support 100 can comprise a base plate 110 provided with an assembly table 114 extending along the third direction Z, the assembly table 114 is provided with a second slot 115, and correspondingly, the middle portion of the static contact bridge 210 in the second direction Y can be provided with a second insertion piece 214 which is inserted into the second slot 115. Through the above structural design, the present disclosure can realize the insertion assembly of the static contact bridge 210 on the base plate 110 by using the second insertion piece 214 and the second slot 115, which is convenient to operate and has high efficiency. In other embodiments, the static contact bridge 210 can also be assembled with the support 100 in other ways, which is not limited to the present embodiment.

[0073] Referring to FIG. 18, FIG. 18 schematically shows a perspective structural schematic view of a contact portion of a relay capable of embodying the principles of the present disclosure in another exemplary embodiment.

[0074] As shown in FIG. 18, in another embodiment of the present disclosure, the contact portion can include four static conductive pieces 220, two movable contact bridges 232 and two elastic pieces 231. Specifically, the four static conductive pieces 220 are arranged in two pairs, the two pairs are arranged in the second direction Y with an interval, and the two static conductive pieces 220 in the same pair are arranged in the third direction Z with an interval. On this basis, one movable contact bridge 232 is arranged corresponding to one pair of static conductive pieces 220, and the first static contact points 221 of the static conductive pieces 220 in the same pair are located on the side facing the movable contact bridge 232. Another movable contact bridge 232 is arranged corresponding to another pair of static conductive pieces 220, and the first static contact points 221 of the static conductive pieces 220 in the same pair are located on the side facing the movable contact bridge 232. In other words, the relay proposed in the present disclosure can include two pairs of static conductive pieces 220, based on the design concept, when the two static conductive pieces 220 located on the same side in the third direction Z and belonging to different pairs are designed to be connected as a whole, the whole structure is the static contact bridge 210 described above, that is, the embodiments shown in FIGS. 1 to 17 can be covered within the scope of the design concept represented by the embodiment shown in FIG. 18.

[0075] Referring to FIG. 19, FIG. 19 represents a perspective structural schematic view of a contact portion of a relay capable of embodying the principles of the present disclosure in yet another exemplary embodiment.

[0076] As shown in FIG. 19, in yet another embodiment of the present disclosure, the contact portion can include only one pair of static conductive pieces 220, one movable contact bridge 232 and one elastic piece 231. Specifically, the two static conductive pieces 220 are arranged in a pair with an interval in the third direction Z, the movable contact bridge 232 is arranged corresponding to the pair of static conductive pieces 220, and the first static contact points 221 of the static conductive pieces 220 in the same pair are located on the side facing the movable contact bridge 232. In other words, the relay proposed in the present disclosure can include only one pair of static conductive pieces 220, that is, the embodiment shown in FIG. 18 can be covered within the scope of the design concept represented by the embodiment shown in FIG. 19. Furthermore, the pair of static conductive pieces 220 included in the contact portion is not limited to one pair or two pairs, but can also be three pairs or more.

[0077] Based on the structural design that the contact portion includes only one pair of static conductive pieces 220 and one movable contact bridge 232 (i.e. one push-pull rod 320), the magnetic circuit portion can also include an armature assembly 310. The armature assembly 310 is located on one side of the contact portion in the first direction X, the armature assembly 310 is rotatably arranged on the support 100 via a rotating shaft 311 extending in parallel to the third direction Z, and the armature assembly 310 has a driving end on one end in the second direction Y. Through the above structural design, the present disclosure can realize that the magnetic circuit portion drives the push-pull rod 320 through the armature assembly 310, so as to realize the closing and opening of a group of contacts, which is simple in structure and occupies less space.

[0078] As mentioned above, in various possible embodiments consistent with the design concept of the present disclosure, the contact part of the relay proposed by the present disclosure comprises at least one pair of static conductive pieces 220, at least one dynamic contact bridge 232 and at least one elastic piece 231. The static conductive piece 220 is provided with a static contact point (for example, the first static contact point 221 or the second static contact point 211) on the side thereof in the first direction X. The two static conductive pieces 220 of the same pair are arranged at intervals in the third direction Z. The elastic piece 231 has two end portions in the second direction Y, which are respectively the contact end portion 2311 and the assembly end portion 2312. The elastic piece 231 is assembled to the support 100 with the assembly end portion 2312, and the dynamic contact bridge 232 is arranged on the side of the contact end portion 2311 facing the static conductive piece 220. The push-pull rod 320 extends in the first direction X, one end portion of which is connected to the magnetic circuit part, and the other end portion of which is in push-pull cooperation with the contact end portion 2311. The magnetic circuit part can drive the push-pull rod 320 to move in the first direction X, so as to push-pull the elastic piece 231 or the dynamic contact bridge 232 and make the dynamic contact bridge 232 move in the first direction X. The elastic piece 231 deforms when the push-pull rod 320 pushes-pulls, and drives the dynamic contact bridge 232 to reset when the push-pull of the push-pull rod 320 weakens or disappears.

[0079] Further, based on the above design concept, the contact part can comprise two pairs of static conductive pieces 220. At this time, the dynamic contact bridge 232 and the elastic piece 231 can both be two. Further, when the contact part comprises two pairs of static conductive pieces 220, the two static conductive pieces 220 located on the same side in the third direction Z and belonging to different pairs respectively can be connected as a whole to form the static contact bridge 210.

[0080] It should be noted that the relay shown in the drawings and described in the specification is only a few examples of many kinds of relays that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the relay shown in the drawings or described in the specification.

[0081] In summary, the contact part of the relay provided by the present disclosure comprises at least one pair of static conductive pieces 220, at least one dynamic contact bridge 232, and at least one elastic piece 231. The static conductive pieces 220 are provided with static contact points on the side surface in the first direction X. The elastic piece 231 has a contact end 2311 and an assembly end 2312 at both ends in the second direction Y, which is perpendicular to the first direction X. The elastic piece 231 is assembled to the support 100 with the assembly end 2312, and the dynamic contact bridge 232 is arranged on the side of the contact end 2311 facing the static conductive pieces 220. The push-pull rod 320 extends in the first direction X, with one end connected to the magnetic circuit part and the other end in push-pull cooperation with the contact end 2311. The magnetic circuit part can drive the push-pull rod 320 to push and pull the elastic piece 231 or the dynamic contact bridge 232 to move in the first direction X. The elastic piece 231 deforms when the push-pull rod 320 pushes and pulls, and drives the dynamic contact bridge 232 to reset when the contact part changes from the on state to the off state. Through the above structural design, the present disclosure can realize the reset and disconnection of the dynamic contact bridge 232 after closing by using the elastic piece 231. Since the dynamic contact bridge 232 and the elastic piece 231 are combined, the dynamic contact bridge 232 serves as a current-carrying piece, and the elastic piece 231 does not provide current-carrying. Accordingly, while increasing the contact gap by adjusting the position of the elastic piece 231, the present disclosure can avoid the trumpet mouth in the off state of the contact, ensure the central arc, and prolong the service life of the relay. In addition, since the elastic piece 231 does not carry current and only needs to provide elastic force, the elastic piece 231 can be made of low-cost materials without considering its conductivity.

[0082] In addition, with the continuous expansion of the application range of relays, relays also develop in the direction of high load and miniaturization. The demand for high load requires relays to meet higher voltage requirements, and specifically requires relays to have larger contact gaps.

[0083] To achieve a large contact gap, one of the existing relays adopts a bridge-type dynamic contact structure, and the magnetic circuit part adopts a straight push structure. However, this scheme can achieve a large contact gap to a certain extent, but to meet the demand for driving the contact part with a large stroke, the volume of the magnetic circuit part is designed to be large, resulting in a large overall volume of the relay, which is difficult to meet the design requirement of miniaturization.

[0084] The present disclosure also provides a relay that can achieve a larger contact gap and meet the design requirement of miniaturization.

[0085] To achieve the above-mentioned purpose, the present disclosure adopts the following technical scheme:

[0086] According to one aspect of the present disclosure, a relay is provided, wherein: the relay comprises a contact portion and a magnetic circuit portion; the contact portion comprises a static contact bridge, two static conductive pieces and two dynamic contact bridges; the static contact bridge is provided with two static contact points, and the two static contact points are respectively located on two sides of the static contact bridge in a first direction; the two dynamic contact bridges are respectively arranged on opposite sides of the static contact bridge and the static conductive pieces in the first direction; and the magnetic circuit portion is capable of driving the two dynamic contact bridges to synchronously and reversely move in the first direction, so that the two dynamic contact bridges are simultaneously turned on or turned off with the corresponding static contact points and the static conductive pieces.

[0087] According to one embodiment of the present disclosure, the two static contact points are arranged in a second direction perpendicular to the first direction; and the two static conductive pieces and the static contact bridge are arranged in a third direction perpendicular to the first direction and perpendicular to the second direction, and in the second direction, the two static conductive pieces are respectively arranged corresponding to the two static contact points.

[0088] According to one embodiment of the present disclosure, the relay further comprises a support, and the contact portion and the magnetic circuit portion are arranged on the support; the contact portion further comprises a resilient piece, and two end portions of the resilient piece in the second direction are respectively a contact end portion and an assembly end portion, the resilient piece is assembled to the support by the assembly end portion, and the dynamic contact bridge is arranged on a side of the contact end portion facing the static contact bridge and the static conductive pieces; wherein the resilient piece is deformed when the magnetic circuit portion drives the dynamic contact bridge to move, and drives the dynamic contact bridge to reset when the contact portion is changed from a turned-on state to a turned-off state.

[0089] According to one embodiment of the present disclosure, the magnetic circuit portion comprises an armature assembly; the armature assembly is located on one side of the contact portion in the first direction, and is rotatably arranged on the support via a rotating shaft extending in parallel to the third direction, and two end portions of the armature assembly in the second direction respectively have driving end portions; the relay further comprises two push-pull rods, and the push-pull rods extend in the first direction, one end of each of the two push-pull rods is connected to one of the two driving end portions, and the other end of each of the two push-pull rods is in push-pull cooperation with the contact end portion of one of the two resilient pieces; wherein the magnetic circuit portion is capable of driving the armature assembly to rotate, so that the armature assembly drives the two push-pull rods to synchronously and reversely move in the first direction.

[0090] According to one of the embodiments of the present disclosure, the contact end of the elastic member is provided with a first through hole, the movable contact bridge is provided with a second through hole, the first through hole and the second through hole are communicated to form a through channel, the push-pull rod passes through the through channel, the push-pull rod is provided with two push-pull blocks spaced apart along the first direction, the two push-pull blocks are respectively located on the side of the elastic member away from the static contact and the side of the movable contact bridge facing the static contact, and the push-pull rod can push the elastic member or the movable contact bridge through the push-pull blocks to realize the push-pull of the contact end.

[0091] According to one of the embodiments of the present disclosure, the elastic member further comprises a reed, one end of the reed is integrally connected to the hole wall of the first through hole, and the other end of the reed is bent and extended away from the static contact; wherein one of the push-pull blocks of the push-pull rod is used to push the side of the other end of the reed away from the static contact.

[0092] According to one of the embodiments of the present disclosure, the side of the reed away from the static contact is provided with two limiting protrusions, the two limiting protrusions are arranged in a third direction, and the two limiting protrusions are used to limit the two sides of the push-pull block in the third direction when the push-pull block pushes the reed.

[0093] According to one of the embodiments of the present disclosure, the side of the movable contact bridge facing the static contact is provided with two movable contacts, the two movable contacts are arranged in the third direction, and the two movable contacts are respectively used to contact and cooperate with the static contact of the static contact bridge and the static conductive member; wherein the second through hole is located between the two movable contacts.

[0094] According to one of the embodiments of the present disclosure, the elastic member is provided with a third through hole at the assembly end; wherein along the first direction, the elastic member relatively close to the armature assembly is a first elastic member, another elastic member is a second elastic member, the push-pull rod cooperating with the first elastic member is a first push-pull rod, and another push-pull rod is a second push-pull rod, and the second push-pull rod passes through the third through hole of the first elastic member.

[0095] According to one of the embodiments of the present disclosure, the third through hole is trapezoidal or triangular, and the large end of the trapezoidal or triangular shape faces the contact end.

[0096] According to one of the embodiments of the present disclosure, the support includes a base plate, and the relay further includes an armature cover plate, both of which are perpendicular to the third direction; the base plate is provided with two brackets extending along the third direction, and the two brackets are arranged in a spaced manner along the second direction, and the two brackets and the base plate jointly form an accommodation space for accommodating the coil assembly and the yoke assembly of the magnetic circuit part; the armature cover plate is connected to the side of the bracket away from the base plate, and the base plate and the armature cover plate are respectively provided with shaft holes corresponding in position, and the armature assembly is respectively provided with coaxial rotating shafts on both sides in the third direction, and the two rotating shafts are respectively rotatably arranged in the two shaft holes.

[0097] According to one of the embodiments of the present disclosure, the support includes a base plate, and the base plate is provided with a first slot, and the elastic member is connected with a first insertion piece at the assembly end, and the first insertion piece is inserted into the first slot.

[0098] According to one of the embodiments of the present disclosure, the two elastic members are two components which are completely identical in structure and arranged in an axial symmetry in space, and the symmetry axis is parallel to the third direction.

[0099] According to one of the embodiments of the present disclosure, the material of the elastic member is stainless steel.

[0100] According to one of the embodiments of the present disclosure, the static contact bridge has a first end portion and a second end portion which are spaced in the second direction, one of the static contact points is arranged on the side of the first end portion facing the magnetic circuit part, and the other static contact point is arranged on the side of the second end portion away from the magnetic circuit part; wherein, along the first direction, the second end portion is closer to the magnetic circuit part than the first end portion.

[0101] According to one of the embodiments of the present disclosure, the relay further includes a support, and the support includes a base plate provided with an assembly table extending along the third direction, and the assembly table is provided with a second slot, and the static contact bridge is provided with a second insertion piece at the middle portion in the second direction, and the second insertion piece is inserted into the second slot.

[0102] According to one of the embodiments of the present disclosure, in the on state of the relay, the flow direction of the current is: from one of the static conductive members to the movable contact bridge in conduction therewith, via the movable contact bridge to the static contact point in conduction therewith, from one end portion of the static contact bridge in the second direction to the other end portion, via the static contact point of the other end portion to the other movable contact bridge in conduction therewith, and from the other movable contact bridge to the other static conductive member in conduction therewith.

[0103] From the above technical solutions, the relay provided by the present disclosure has the advantages and positive effects that:

[0104] The contact part of the relay provided by the present disclosure comprises a static contact bridge, two static conductive pieces and two dynamic contact bridges. The static contact bridge is provided with two static contact points, and the two static contact points are respectively located on the two sides of the static contact bridge in a first direction and are arranged at intervals in a second direction perpendicular to the first direction. The two static conductive pieces are arranged at intervals with the static contact bridge in a third direction perpendicular to the first direction and perpendicular to the second direction, and in the second direction, the two static conductive pieces are arranged correspondingly with the two static contact points. The two dynamic contact bridges are respectively arranged on the opposite sides of the static contact bridge and the static conductive piece in the first direction. The magnetic circuit part can drive the two dynamic contact bridges to move synchronously and reversely in the first direction, so as to make the two dynamic contact bridges and the corresponding static contact points and static conductive pieces conduct or disconnect at the same time. Through the above design, the present disclosure provides a contact part adopting a bridge structure, which can prolong the contact gap, increase the arc voltage, improve the arc static volt-ampere characteristic, facilitate fast arc extinction and reduce contact ablation. Moreover, the present disclosure can reduce the gap of a single group of contact points while prolonging the contact gap, thereby reducing the occupied space of the contact part, shortening the movement stroke of the dynamic contact bridge, reducing the driving force required by the magnetic circuit part, thereby reducing the volume of the magnetic circuit part, so that the relay meets the design requirement of miniaturization. On this basis, the present disclosure arranges the two dynamic contact bridges on the two sides of the static contact bridge and the two static conductive pieces, thereby realizing effective isolation of the arcs generated by the two dynamic contact bridges, and avoiding mutual influence caused by the generation of arcs by the bridge contact.

[0105] In an embodiment of the present disclosure, the relay further comprises a support, and the contact part and the magnetic circuit part are arranged on the support; the contact part further comprises a resilient member, two ends of the resilient member in the second direction are respectively a contact end and an assembly end, the resilient member is arranged on the support by the assembly end, and the moving contact bridge is arranged on the side of the contact end facing the stationary contact bridge and the stationary conductive member; the resilient member is deformed when the magnetic circuit part drives the moving contact bridge to move, and drives the moving contact bridge to reset when the contact part changes from the on state to the off state. Through the above design, the present disclosure can realize the reset off of the moving contact bridge after the moving contact bridge is closed by using the resilient member. Moreover, the combination of the moving contact bridge and the resilient member is adopted, wherein only the moving contact bridge is used as a current-carrying member, and the resilient member carries current, so that the contact gap can be increased by adjusting the position of the resilient member while avoiding the trumpet mouth in the off state of the contact, ensuring the central arc, and improving the service life reliability of the relay. In addition, since the resilient member does not carry current and only needs to provide elastic force, the resilient member can be made of low-cost materials such as stainless steel, without considering the conductivity, and the resilient member only needs to ensure the force value, which can further reduce the occupied space of the resilient member. In addition, since the resilient member does not carry current, the resilient member does not need to be made large and thick to match the current, that is, the counterforce of the resilient member can be set smaller, and the magnetic circuit part does not need to match a larger driving force, thereby reducing the volume of the magnetic circuit part. On the other hand, since the resilient member does not carry current, only the cross sections of the moving contact bridge, the stationary contact bridge and the stationary conductive member need to be adjusted for different load currents, and the resilient member and the magnetic circuit part do not need to be adjusted synchronously, so that the versatility of the relay can be enhanced. In addition, the combination of the resilient member and the moving contact bridge in the present disclosure is equivalent to setting a rigid gasket on the contact end of the resilient member, so that the stiffness of the contact head can be increased.

[0106] In an embodiment of the present disclosure, the magnetic circuit part comprises an armature assembly; the armature assembly is located on one side of the contact part in the first direction and is rotatably arranged on the support through a rotating shaft extending in parallel to the third direction, and two ends of the armature assembly in the second direction respectively have a driving end; the relay further comprises two push-pull rods, the push-pull rods extend along the first direction, and one end of each of the two push-pull rods is connected to the two driving ends respectively, and the other end of each of the two push-pull rods is in push-pull cooperation with the contact end of the two resilient members respectively; wherein the magnetic circuit part can drive the armature assembly to rotate so that the armature assembly drives the two push-pull rods to move in the first direction synchronously and reversely. Through the above design, the present disclosure can realize that the magnetic circuit part drives the two push-pull rods simultaneously through the armature assembly, so as to realize the synchronous closing and opening of the two groups of contacts, which can ensure that the contact action has better synchronism, and the structure is simple and the occupied space is small.

[0107] In an embodiment of the present disclosure, the contact end of the elastic member is provided with a first through hole, the movable contact bridge is provided with a second through hole, the first through hole and the second through hole are communicated to form a through channel, and the push-pull rod passes through the through channel. The push-pull rod is provided with two push-pull blocks spaced apart in the first direction, and the two push-pull blocks are respectively located on the side of the elastic member away from the static contact and the side of the movable contact bridge facing the static contact. The push-pull rod can push the elastic member or the movable contact bridge through the push-pull blocks to realize the pushing and pulling of the contact end. Through the above design, the through channel is formed by opening the through holes in the corresponding positions of the elastic member and the movable contact bridge, and the push-pull rod is arranged in the through channel. This avoids arranging the push-pull rod outside the elastic member and the movable contact bridge, which is beneficial to reducing the space occupation. In some embodiments, the push-pull rod can also be arranged outside the elastic member and the movable contact bridge. In this case, the elastic member and the movable contact bridge do not need to be provided with the above-mentioned through holes. At this time, the push-pull rod can still be provided with the above-mentioned push-pull blocks, and the structure and position of the push-pull blocks can be adjusted to realize the specific pushing and pulling action. This is not limited to the embodiment.

[0108] In an embodiment of the present disclosure, the elastic member can further include a reed. One end of the reed can be integrally connected to the hole wall of the first through hole, and the other end of the reed can be bent and extended away from the static contact bridge. In this way, one of the push-pull blocks of the push-pull rod is used to push the other end of the reed away from the side of the static contact. Through the above design, the present disclosure can utilize the pressure generated by the flexible deformation of the reed. The pressure can be adjusted by adjusting the slot depth and width size of the reed. The elastic member provides the contact pressure in the closed state and the reset reaction force in the open state through the deformation of the reed, matches the suction reaction force in the open state and the closed state, and does not need to design additional parts to provide the reaction force. In some embodiments, the reed can also be integrally connected to other positions of the elastic member. Alternatively, the reed and the elastic member are not limited to an integral structure. For example, the reed and the elastic member can be two connected components. This is not limited to the embodiment.

[0109] Referring to FIGS. 1 and 2, which respectively represent the schematic three-dimensional structure of the part of the relay proposed by the present disclosure in two different perspectives. In this exemplary embodiment, the relay proposed by the present disclosure is applied to the charging and energy storage scene. Those skilled in the art can easily understand that various modifications, additions, substitutions, deletions or other changes can be made to the specific embodiments described below in order to apply the relevant design of the present disclosure to other types of relays, which are still within the scope of the principles of the relay proposed by the present disclosure.

[0110] As shown in FIG. 1 and FIG. 2, in an embodiment of the present disclosure, the relay proposed by the present disclosure comprises a contact portion and a magnetic circuit portion. Referring to FIG. 3 to FIG. 17, FIG. 3 represents a side view of FIG. 1; FIG. 4 and FIG. 5 respectively represent cross-sectional views along the straight line A-A in FIG. 3 in two different states; FIG. 6 represents a cross-sectional view along the straight line B-B in FIG. 4; FIG. 7 represents an exploded view of FIG. 1; FIG. 8 and FIG. 9 respectively represent enlarged views of the contact portion in two different states; FIG. 10 and FIG. 11 respectively represent three-dimensional structural views of the portion shown in FIG. 8 from two different perspectives, wherein the combination structure of the two movable contact bridges 232 and the two push-pull rods 320 is specifically shown; FIG. 12 represents a plan view of FIG. 11; FIG. 13 and FIG. 14 respectively represent enlarged views of the movable contact bridge 232 from two different perspectives; FIG. 15 represents an enlarged view of the stationary contact bridge 210; FIG. 16 represents an enlarged view of the magnetic circuit portion; and FIG. 17 represents a three-dimensional structural view of the support 100. For the two different states in the above-mentioned figures, they are respectively the contact opening state and the contact closing state of the relay, for example, FIG. 4 and FIG. 8 are both in the contact opening state, and FIG. 5 and FIG. 9 are both in the contact closing state. The structure, connection mode and functional relationship of each main component of the relay proposed by the present disclosure will be described in detail below in combination with the above-mentioned figures.

[0111] As shown in FIGS. 1-5, in an embodiment of the present disclosure, the contact portion includes a static contact bridge 210, two static conductive pieces 220, and two dynamic contact bridges 232. The static contact bridge 210 is provided with two static contact points (hereinafter referred to as second static contact points 211), which can be integrally formed with the static contact bridge 210, for example, and the two second static contact points 211 are respectively located on both sides of the static contact bridge 210 in the first direction X. In the embodiment, only one second static contact point 211 is included on each side of the static contact bridge 210, and in some embodiments, the second static contact point 211 on each side of the static contact bridge 210 can further include at least two sub-contact points. The two dynamic contact bridges 232 are respectively arranged on opposite sides of the static contact bridge 210 and the static conductive piece 220 in the first direction X. The magnetic circuit portion can drive the two dynamic contact bridges 232 to move synchronously and reversely in the first direction X, so that the two dynamic contact bridges 232 are simultaneously turned on or turned off with the corresponding second static contact points 211 and static conductive pieces 220. Through the above design, the present disclosure provides a contact portion with a bridge structure, which can prolong the contact gap, increase the arc voltage, improve the arc static volt-ampere characteristic, facilitate fast arc extinction, and reduce contact ablation. Moreover, the present disclosure can reduce the gap of a single group of contacts while prolonging the contact gap, thereby reducing the occupied space of the contact portion, shortening the movement stroke of the dynamic contact bridge 232, reducing the driving force required by the magnetic circuit portion, thereby reducing the volume of the magnetic circuit portion, so that the relay meets the design requirements of miniaturization. On this basis, the present disclosure arranges the two dynamic contact bridges 232 on both sides of the static contact bridge 210 and the two static conductive pieces 220, respectively, so as to effectively isolate the arcs generated by the two dynamic contact bridges 232 on both sides, and avoid mutual influence when the bridge contact generates an arc.

[0112] As shown in FIGS. 1-9, in an embodiment of the present disclosure, the two second static contact points 211 are arranged at intervals in the second direction Y perpendicular to the first direction X. The two static conductive pieces 220 and the static contact bridge 210 are arranged at intervals in the third direction Z perpendicular to the first direction X and perpendicular to the second direction Y. In the second direction Y, the two static conductive pieces 220 are respectively arranged corresponding to the two second static contact points 211. Among them, one side of the static conductive piece 220 in the first direction X can also be provided with a first static contact point 221, which can be integrally formed with the static conductive piece 220, and the first static contact point 221 of the static conductive piece 220 and the corresponding (e.g., on the same side in the second direction Y) second static contact point 211 are located on the same side in the first direction X, i.e., they face one dynamic contact bridge 232.

[0113] As shown in FIGS. 1-9, in an embodiment of the present disclosure, the relay proposed by the present disclosure further comprises a support 100, and the contact part and the magnetic circuit part are both arranged on the support 100. Moreover, the contact part can further comprise a resilient member 231, both ends of the resilient member 231 in the second direction Y are respectively a contact end 2311 and an assembly end 2312, the resilient member 231 is assembled on the support 100 with the assembly end 2312, and the movable contact bridge 232 is arranged on the side of the contact end 2311 facing the static contact bridge 210 and the static conductive member 220. On this basis, the resilient member 231 is deformed when driving the movable contact bridge 232 to move in the magnetic circuit part, and the resilient member 231 accumulates elastic potential energy due to its own deformation in this process. When the contact part changes from the on state to the off state, the resilient member 231 releases the elastic potential energy to drive the movable contact bridge 232 to reset. Through the above design, the present disclosure can realize the reset off of the movable contact bridge 232 after closing by using the resilient member 231. Moreover, the combination design of the movable contact bridge 232 and the resilient member 231 is adopted, wherein only the movable contact bridge 232 is used as the current-carrying member, that is, the resilient member 231 does not provide current-carrying, so that the contact gap can be increased by adjusting the position of the resilient member 231 while avoiding the occurrence of the horn mouth (for example, the conversion ratio of the travel of the armature assembly 310 to the contact gap is 1:1) in the contact off state, ensuring the central arc, and improving the service life reliability of the relay. Moreover, since the present disclosure can realize the increase of the contact gap compared with the prior art, that is, the action travel of the movable contact bridge 232 is shorter, so that the present disclosure can reduce the deformation amplitude of the resilient member 231 when the resilient member 231 is applied, reduce metal fatigue, and be beneficial to prolong the service life of the above-mentioned resilient member. In addition, since the resilient member 231 does not carry current but only needs to provide elastic force, the resilient member 231 can adopt low-cost materials such as stainless steel, without considering its conductivity, and the resilient member 231 only needs to ensure the force value, which can further reduce the occupied space of the resilient member 231. Moreover, since the resilient member 231 does not carry current, the resilient member 231 does not need to be made large and thick to match the current, that is, the counterforce of the resilient member 231 can be set smaller, and the magnetic circuit part does not need to match larger driving force, thereby reducing the volume of the magnetic circuit part. On the other hand, since the resilient member 231 does not carry current, only the cross sections of the movable contact bridge 232, the static contact bridge 210 and the static conductive member 220 need to be adjusted for different load currents, and the resilient member 231 and the magnetic circuit part do not need to be adjusted synchronously, so that the versatility of the relay can be enhanced (it is more advantageous for the subsequent series of current improvement of the product to be developed in parallel without changing the magnetic circuit part). This, the present disclosure utilizes the combination design of the resilient member 231 and the movable contact bridge 232, which is equivalent to setting a rigid gasket for the contact end 2311 of the resilient member 231, so that the contact head rigidity can be increased, which is beneficial to realize the purpose of fast breaking of the contact.

[0114] Based on the design that the contact portion comprises the elastic member 231, in an embodiment of the present disclosure, the movable contact bridge 232 can be fixed to the contact end 2311 of the elastic member 231 in a riveting manner. In some embodiments, the movable contact bridge 232 and the elastic member 231 can also be assembled and connected in other manners, and are not limited to the present embodiment.

[0115] As shown in FIGS. 1-9 and 16, based on the design that the contact portion comprises the elastic member 231, in an embodiment of the present disclosure, the magnetic circuit portion can comprise an armature assembly 310. The armature assembly 310 is located on one side of the contact portion in the first direction X, and the armature assembly 310 is rotatably arranged on the support 100 via a rotating shaft 311 extending parallel to the third direction Z, and the two ends of the armature assembly 310 in the second direction Y respectively have driving end portions. On this basis, the relay proposed in the present disclosure further comprises two push-pull rods 320 extending along the first direction X, and one end of each of the two push-pull rods 320 is respectively connected to the two driving end portions, and the other end of each of the two push-pull rods 320 is respectively in push-pull cooperation with the contact end 2311 of each of the two elastic members 231. Accordingly, the magnetic circuit portion can drive the armature assembly 310 to rotate so that the armature assembly 310 drives the two push-pull rods 320 to move synchronously and reversely along the first direction X. Through the above design, the present disclosure can realize that the magnetic circuit portion drives the two push-pull rods 320 simultaneously through the armature assembly 310, so as to realize the synchronous closing and opening of the two groups of contacts, can ensure that the contact action has better synchronism, and has simple structure and smaller space occupation.

[0116] As shown in FIGS. 7 and 8, based on the design that the relay includes the push-pull rod 320, in an embodiment of the present disclosure, the contact end 2311 of the elastic piece 231 can be provided with a first through hole 23111, the movable contact bridge 232 can be provided with a second through hole 2321, the first through hole 23111 and the second through hole 2321 are in communication to form a through channel. Accordingly, the push-pull rod 320 can pass through the through channel, and the push-pull rod 320 is provided with two push-pull blocks 321 spaced apart along the first direction X, the two push-pull blocks 321 are respectively located on the side of the elastic piece 231 away from the second static contact 211 and the side of the movable contact bridge 232 facing the second static contact 211, and the push-pull rod 320 can push the elastic piece 231 or the movable contact bridge 232 via the push-pull blocks 321 to realize the pushing and pulling of the contact end 2311. Through the above design, the present disclosure forms a through channel by opening a through hole at the corresponding position of the elastic piece 231 and the movable contact bridge 232, thereby realizing the arrangement of the push-pull rod 320, avoiding the arrangement of the push-pull rod 320 on the outside (for example, on the side in the second direction Y or the third direction Z) of the elastic piece 231 and the movable contact bridge 232, and facilitating the reduction of space occupation. In some embodiments, the push-pull rod 320 can also be arranged on the outside of the elastic piece 231 and the movable contact bridge 232, and the elastic piece 231 and the movable contact bridge 232 do not need to be opened with the above-mentioned through hole. At this time, the push-pull rod 320 can still be provided with the above-mentioned push-pull blocks 321, and the structure and position of the push-pull blocks 321 can be adjusted to realize specific pushing and pulling actions, which are not limited to the embodiment.

[0117] As shown in FIGS. 7 to 14, based on the design that the elastic piece 231 is provided with the first through hole 23111, in an embodiment of the present disclosure, the elastic piece 231 can further include a spring leaf 2313, one end of the spring leaf 2313 can be integrally connected to the hole wall of the first through hole 23111, and the other end of the spring leaf 2313 can be bent and extended away from the second static contact 211. Accordingly, one push-pull block 321 of the push-pull rod 320 is used to push the side of the other end of the spring leaf 2313 away from the second static contact 211. Through the above design, the present disclosure can utilize the pressure generated by the flexible closing deformation of the spring leaf 2313, and the pressure can be adjusted by adjusting the slot depth and width size of the spring leaf 2313. The elastic piece 231 provides the contact pressure in the closed state and the reset reaction force in the open state through the deformation of the spring leaf 2313, matches the suction reaction force in the open state and the closed state, and does not need to design additional parts to provide the reaction force. In some embodiments, the spring leaf 2313 can also be integrally connected to other positions of the elastic piece 231, or the spring leaf 2313 and the elastic piece 231 are not limited to an integral structure, for example, the spring leaf 2313 and the elastic piece 231 can be two connected members, which are not limited to the embodiment.

[0118] As shown in FIGS. 8, 12 and 13, based on the design that the elastic member 231 comprises the spring leaf 2313, in an embodiment of the present disclosure, the side of the spring leaf 2313 facing away from the second stationary contact 211 can be provided with two limiting protrusions 23131, which are arranged at intervals along the third direction Z, and the two limiting protrusions 23131 can limit the two sides of the push-pull block 321 in the third direction Z when the push-pull block 321 pushes against the spring leaf 2313. Through the above design, the present disclosure can further improve the stability and accuracy of the push-pull action of the push-pull rod 320.

[0119] As shown in FIGS. 7 to 14, based on the design that the movable contact bridge 232 is provided with the second through hole 2321, in an embodiment of the present disclosure, the side of the movable contact bridge 232 facing the second stationary contact 211 is provided with two movable contacts 2322, which are arranged at intervals along the third direction Z, i.e., one of the two movable contacts 2322 is in contact with one of the second stationary contacts 211 of the stationary contact bridge 210, and the other movable contact 2322 is in contact with one stationary conductive member 220. On this basis, the second through hole 2321 can be located between the two movable contacts 2322. Through the above design, the present disclosure can make the pressure more uniform when the push-pull rod 320 pushes and pulls the movable contact bridge 232, further improving the stability of the push-pull action. In some embodiments, the second through hole 2321 can also be arranged at other positions of the movable contact bridge 232, for example, it can be located on one side of the two movable contacts 2322 in the second direction Y, or it can be located on the side of one movable contact 2322 in the third direction Z away from the other movable contact 2322, which are not limited by the above embodiments.

[0120] As shown in FIGS. 7, 11, 13 and 14, based on the design that the push-pull rod 320 passes through the through channel, in an embodiment of the present disclosure, the elastic member 231 can be provided with a third through hole 23121 at the assembly end 2312. Among them, along the first direction X, the elastic member 231 relatively close to the armature assembly 310 is defined as the first elastic member 231, and the other elastic member 231 is defined as the second elastic member 231, and the push-pull rod 320 in push-pull cooperation with the first elastic member 231 is defined as the first push-pull rod 320, and the other push-pull rod 320 is defined as the second push-pull rod 320, on this basis, the second push-pull rod 320 can pass through the third through hole 23121 of the first elastic member 231. Through the above design, the present disclosure can use the third through hole 23121 for the push-pull rod 320 to pass through, avoiding the structure interference between the push-pull rod 320 and the other elastic member 231 when the present disclosure adopts the design that the push-pull rod 320 is in cooperation with the through channel. At the same time, the present disclosure can adjust the shape and length-width size of the third through hole 23121 to adjust the pressure generated by the flexible closing deformation of the spring leaf 2313.

[0121] As shown in FIG. 7, FIG. 11, FIG. 13 and FIG. 14, based on the design that the elastic member 231 is provided with the third through hole 23121, in an embodiment of the present disclosure, the third through hole 23121 can be trapezoidal or triangular, and the large end of the trapezoidal or triangular shape faces the contact end 2311.

[0122] As shown in FIG. 1, FIG. 4, FIG. 5 and FIG. 17, based on the design that the magnetic circuit part includes the armature assembly 310, in an embodiment of the present disclosure, the support 100 can include a base plate 110, and the relay proposed in the present disclosure can further include an armature cover plate 120, and the base plate 110 and the armature cover plate 120 are both perpendicular to the third direction Z. Specifically, the base plate 110 is provided with two supports 111 extending along the third direction Z, and the two supports 111 are arranged at intervals along the second direction Y, and the two supports 111 and the base plate 110 together form an accommodation space for accommodating the coil assembly 330 and the yoke assembly 340 of the magnetic circuit part. The armature cover plate 120 is connected to the side of the support 111 away from the base plate 110, and the base plate 110 and the armature cover plate 120 are respectively provided with axis holes 112, 121 corresponding in position, and the armature assembly 310 is provided with coaxial rotating shafts 311 on both sides in the third direction Z, and the two rotating shafts 311 are respectively rotatably arranged in the two axis holes 112, 121.

[0123] As shown in FIG. 13, FIG. 14 and FIG. 17, based on the design that the relay includes the support 100 and the contact part includes the elastic member 231, in an embodiment of the present disclosure, the support 100 includes the base plate 110, and the base plate 110 can be provided with a first slot 113, and correspondingly, the elastic member 231 can be connected with a first insertion piece 2314 at the assembly end 2312, and the first insertion piece 2314 is inserted into the first slot 113. Through the above design, the present disclosure can realize the insertion assembly of the elastic member 231 on the base plate 110 by using the first insertion piece 2314 and the first slot 113, which is convenient to operate and has high efficiency. In other embodiments, the elastic member 231 can also be assembled with the support 100 in other ways, which is not limited to the present embodiment.

[0124] As shown in FIGS. 10-12, based on the design that the contact portion comprises the elastic member 231, in an embodiment of the disclosure, the two elastic members 231 can be two components that are structurally identical and arranged in axial symmetry in space, and the symmetry axis of the two elastic members 231 extends parallel to the third direction Z. In particular, when the elastic member 231 is provided with the third through hole 23121, the third through hole 23121 of one of the elastic members 231 (for example, the first elastic member 231 described above) can be passed through by the other push-pull rod 320 (for example, the second push-pull rod 320 described above), and the third through hole 23121 of the other elastic member 231 (for example, the second elastic member 231 described above) is not passed through by the push-pull rod 320 (for example, the first push-pull rod 320 described above does not need to pass through the third through hole 23121 of the second elastic member 231). At this time, when the two elastic members 231 still adopt the design that is structurally identical (i.e., both are provided with the third through hole 23121), the disclosure does not need to distinguish between the elastic member 231 with the third through hole 23121 and the elastic member 231 without the third through hole 23121 when assembling the two elastic members 231, thereby further reducing the assembly difficulty and improving the efficiency.

[0125] Based on the design that the contact portion comprises the elastic member 231, in an embodiment of the disclosure, the material of the elastic member 231 can be stainless steel. Through the above design, since the elastic member 231 proposed by the disclosure does not need to consider current carrying, stainless steel can be used, thereby reducing the material cost.

[0126] As shown in FIGS. 3 and 8, in an embodiment of the disclosure, the two ends of the movable contact bridge 232 (for example, the two movable contact points 2322 of the same movable contact bridge 232) in the third direction Z can correspond to the second stationary contact point 211 (i.e., the end of the stationary contact bridge 210) and the stationary conductive member 220 on the same side in the second direction Y, respectively, avoiding the situation that one side is closed first, and not increasing the space occupation in the second direction Y. Accordingly, the two movable contact bridges 232 can be arranged in a spaced arrangement in the second direction Y, thereby reducing the structural complexity and assembly difficulty. In some embodiments, the two ends of the movable contact bridge 232 (for example, the two movable contact points 2322 of the same movable contact bridge 232) can also correspond to the second stationary contact point 211 (i.e., the end of the stationary contact bridge 210) and the stationary conductive member 220 on different sides in the second direction Y, respectively, and the disclosure is not limited thereto.

[0127] As shown in FIG. 4, FIG. 5, FIG. 8 and FIG. 9, in an embodiment of the present disclosure, the static contact bridge 210 has a first end portion 212 and a second end portion 213 spaced apart in the second direction Y, one second static contact point 211 of the static contact bridge 210 is arranged on a side of the first end portion 212 facing the magnetic circuit portion, and another second static contact point 211 of the static contact bridge 210 is arranged on a side of the second end portion 213 facing away from the magnetic circuit portion. On this basis, in the first direction X, the second end portion 213 can be closer to the magnetic circuit portion than the first end portion 212. Through the above design, the present disclosure can stagger the second static contact points 211 on both sides of the static contact bridge 210 in the first direction X, and accordingly, the second static contact points 211 are respectively close to the respective cooperating movable contact bridges 232, which is conducive to further reducing the spacing of the two groups of movable contact bridges 232 in the first direction X, thereby reducing the space occupation of the contact portion in the first direction X.

[0128] As shown in FIG. 15 and FIG. 17, in an embodiment of the present disclosure, the relay further comprises a support 100, which can include a base plate 110 provided with an assembly table 114 extending in the third direction Z, and the assembly table 114 is provided with a second slot 115, and correspondingly, the middle portion of the static contact bridge 210 in the second direction Y can be provided with a second insertion piece 214 inserted into the second slot 115. Through the above design, the present disclosure can realize the insertion assembly of the static contact bridge 210 on the base plate 110 by using the second insertion piece 214 and the second slot 115, which is convenient to operate and has high efficiency. In other embodiments, the static contact bridge 210 can also be assembled with the support 100 in other ways, which is not limited to the present embodiment.

[0129] As shown in FIG. 9, in an embodiment of the present disclosure, the relay proposed by the present disclosure has the current flow as follows in the on state: from one static conducting piece 220 to the movable contact bridge 232 which is on with the static conducting piece 220, from the movable contact bridge 232 to the second static contact point 211 which is on with the movable contact bridge 232, from one end of the static contact bridge 210 in the second direction Y to the other end, from the second static contact point 211 of the other end to the other movable contact bridge 232 which is on with the second static contact point 211, and from the other movable contact bridge 232 to the other static conducting piece 220 which is on with the other movable contact bridge 232. Through the above design, the present disclosure can realize that the contact gap of the relay is four times of the single contact gap. For example, if the single contact gap is 2 mm, the contact gap of the relay can meet 8 mm, and the specific value of the above gap can be adjusted by the stroke control. At the same time, when the contacts are separated, the four contacts become four breaks, and the four breaks respectively generate arcs. Accordingly, the present disclosure increases the number of breaks to realize that the four breaks are simultaneously broken, forming four arcs. Compared with the existing scheme using a double-break structure, the present disclosure can double the number of arc segments. Among the four arcs, each arc has a cathode and anode voltage drop, i.e., eight side voltage drops are formed in total. Therefore, the present disclosure can double the side voltage drops. In addition, under the condition that the contact opening distance is constant, the increase in the number of arc segments doubles the sum of the lengths of the arcs, i.e., the total length of the arc column region increases, the arc column region voltage drop doubles, and the arc voltage greatly increases, thereby improving the arc static volt-ampere characteristic, which is beneficial to fast arc extinction, reduces the contact ablation, and improves the life and withstand voltage and current capacity of the contactor.

[0130] It should be noted that the relays shown in the drawings and described in the present specification are only a few examples of many relays that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the relays shown in the drawings or described in the present specification.

[0131] In summary, the contact part of the relay provided by the present disclosure includes a static contact bridge 210, two static conductive pieces 220, and two movable contact bridges 232. The static contact bridge 210 is provided with two second static contact points 211, which are respectively located on the two sides of the static contact bridge 210 in the first direction X and are arranged in the second direction Y perpendicular to the first direction X. The two static conductive pieces 220 are arranged in the third direction Z perpendicular to the first direction X and perpendicular to the second direction Y, and in the second direction Y, the two static conductive pieces 220 are arranged correspondingly to the two second static contact points 211. The two movable contact bridges 232 are arranged on the opposite sides of the static contact bridge 210 and the static conductive pieces 220 in the first direction X. The magnetic circuit part can drive the two movable contact bridges 232 to move synchronously and reversely in the first direction X, so that the two movable contact bridges 232 are turned on or turned off at the same time with the corresponding second static contact points 211 and static conductive pieces 220. Through the above design, the present disclosure provides a contact part with a bridge structure, which can prolong the contact gap, increase the arc voltage, improve the arc static volt-ampere characteristic, facilitate fast arc extinction, and reduce the contact ablation. Moreover, the present disclosure can reduce the gap of a single group of contacts while prolonging the contact gap, thereby reducing the occupied space of the contact part, shortening the movement stroke of the movable contact bridge 232, reducing the driving force required by the magnetic circuit part, and thus reducing the volume of the magnetic circuit part, so that the relay meets the design requirement of miniaturization. On this basis, the present disclosure arranges the two movable contact bridges 232 on the two sides of the static contact bridge 210 and the two static conductive pieces 220, so as to effectively isolate the arcs generated by the two movable contact bridges 232 on the two sides and avoid mutual influence when the bridge contact generates arcs.

[0132] The exemplary embodiments of the relay provided by the present disclosure are described and / or illustrated above in detail. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein, but rather, each of the individual 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 step of one embodiment can also be used in combination with other components and / or steps of other embodiments. The language used in the description herein should not be used to limit the scope of the present disclosure, and the words "one," "an," and "the" used herein do not denote a limitation of the quantity, but rather denote the presence of at least one of the referenced item. The terms "comprising," "including," and "having" are intended to be open-ended terms that do not limit the components or steps to the listed components or steps. Furthermore, the terms "first," "second," and the like used in the description herein are used to distinguish between similar elements, and are not necessarily used to indicate the order of the elements.

[0133] While the relay presented in the disclosure has been described in terms of different particular embodiments, those skilled in the art will recognize that modifications can be made to the embodiments of the disclosure without departing from the spirit and scope of the claims.

Claims

1. A relay characterized by The application relates to a contactor, which comprises a support, a contact part, a push-pull rod and a magnetic circuit part, wherein: The contact part comprises at least one pair of static conductive pieces, at least one dynamic contact bridge and at least one elastic piece; the static conductive pieces are provided with static contact points on the side in the first direction; the elastic piece is provided with a contact end and an assembly end at both ends in the second direction, the second direction is perpendicular to the first direction, the assembly end of the elastic piece is assembled to the support, and the dynamic contact bridge is arranged on the side of the contact end facing the static conductive pieces; The push-pull rod extends in the first direction, one end of the push-pull rod is connected to the magnetic circuit part, and the other end of the push-pull rod is in push-pull cooperation with the contact end; The magnetic circuit part can drive the push-pull rod to move in the first direction, so that the push-pull rod pushes and pulls the elastic piece or the dynamic contact bridge, the dynamic contact bridge moves in the first direction, the elastic piece deforms when the push-pull rod pushes and pulls, and the dynamic contact bridge is reset when the contact part changes from the on state to the off state.

2. The relay according to claim 1, characterized in that The two static conductive pieces in the same pair are arranged at intervals in the third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

3. The relay according to claim 2, characterized in that The contact part further comprises a reed, one end of the reed is connected to the elastic piece, and the other end of the reed is bent and extended away from the static conductive pieces; wherein the push-pull rod is provided with two push-pull blocks which are spaced apart in the first direction, and the two push-pull blocks are respectively located on the side of the elastic piece away from the static contact points and the side of the dynamic contact bridge facing the static conductive pieces, and one of the push-pull blocks is used for pushing the side of the other end of the reed away from the static conductive pieces.

4. The relay according to claim 3, characterized in that The contact end of the elastic piece is provided with a first through hole, the dynamic contact bridge is provided with a second through hole, the first through hole and the second through hole are communicated to form a through channel, and the push-pull rod passes through the through channel.

5. The relay of claim 4, wherein One end of the reed is integrally connected to the hole wall of the first through hole.

6. The relay of claim 4, wherein The side of the dynamic contact bridge facing the static conductive pieces is provided with two dynamic contact points, the two dynamic contact points are arranged at intervals in the third direction, and the two dynamic contact points are respectively used for contact cooperation with the static contact points of the two static conductive pieces in the same pair; wherein the second through hole is located between the two dynamic contact points.

7. The relay of claim 3, wherein The side of the reed away from the static conductive pieces is provided with two limiting protrusions, the two limiting protrusions are arranged at intervals in the third direction, so as to limit the two sides of the push-pull block in the third direction when the push-pull block pushes the reed.

8. The relay of claim 1, wherein The support comprises a base plate, the base plate is provided with a first insertion slot, the elastic piece is connected with a first insertion sheet at the assembly end, and the first insertion sheet is inserted into the first insertion slot.

9. The relay of claim 1, wherein The material of the elastic piece is stainless steel.

10. The relay according to any one of claims 1 to 7, characterized in that The magnetic circuit part comprises an armature assembly; the armature assembly is located on one side of the contact part in the first direction and is rotatably arranged on the support via a rotating shaft extending in parallel to a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction, and the armature assembly has a driving end on one end in the second direction; one end of the push-pull rod is connected to the driving end, and the other end is in push-pull cooperation with the contact end of the elastic member; wherein the magnetic circuit part can drive the armature assembly to rotate so that the armature assembly drives the push-pull rod to move along the first direction.

11. The relay of claim 10, wherein The support comprises a base plate, and the relay further comprises an armature cover plate, both of which are perpendicular to the third direction; the base plate is provided with two supports extending in the third direction, and the two supports are arranged in the second direction; the two supports and the base plate jointly form an accommodation space for accommodating the coil assembly and the yoke assembly of the magnetic circuit part; the armature cover plate is connected to the side of the support away from the base plate, and the base plate and the armature cover plate are respectively provided with axis holes corresponding in position; the armature assembly is provided with coaxial rotating shafts on both sides in the third direction, and the two rotating shafts are rotatably arranged in the two axis holes, respectively.

12. The relay according to any one of claims 1 to 7, characterized in that The contact part comprises two pairs of static conductive pieces, two dynamic contact bridges and two elastic members; the two pairs of static conductive pieces are arranged in the second direction; one dynamic contact bridge is arranged on one side of one pair of static conductive pieces in the first direction, and the other dynamic contact bridge is arranged on the other side of the other pair of static conductive pieces in the first direction; the relay comprises two push-pull rods, and the two push-pull rods are arranged corresponding to the two dynamic contact bridges, respectively; wherein the magnetic circuit part can drive the two push-pull rods to move synchronously and reversely along the first direction, so that the two dynamic contact bridges move synchronously and reversely along the first direction, so that the two dynamic contact bridges are simultaneously turned on or turned off with the corresponding static contact points.

13. The relay of claim 12, wherein, The two static conductive pieces in the same pair are arranged in the third direction, which is perpendicular to the first direction and perpendicular to the second direction; the two static conductive pieces belonging to different pairs and located on the same side in the third direction are connected to form a static contact bridge.

14. The relay of claim 13, wherein, The static contact bridge has a first end and a second end spaced apart in the second direction; one static contact point is arranged on the side of the first end facing the magnetic circuit part, and the other static contact point is arranged on the side of the second end away from the magnetic circuit part; wherein, along the first direction, the second end is closer to the magnetic circuit part than the first end.

15. The relay of claim 13, wherein, The support comprises a base plate, and the base plate is provided with an assembly table extending in the third direction, and the assembly table is provided with a second slot; the static contact bridge is provided with a second insertion piece in the middle in the second direction, and the second insertion piece is inserted into the second slot.

16. The relay of claim 13, wherein In the on state, the current flows from one of the static conductive members to the movable contact bridge connected thereto, through the movable contact bridge to the static contact points of the static contact bridge, from one end of the static contact bridge in the second direction to the other end, through the static contact points of the static contact bridge to the other movable contact bridge connected thereto, and from the other movable contact bridge to the other static conductive member connected thereto.

17. The relay of claim 12, wherein, The magnetic circuit portion comprises an armature assembly; the armature assembly is located on one side of the contact portion in the first direction and is rotatably arranged on the support via a rotating shaft extending in parallel to a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction, and the armature assembly has driving end portions at both ends thereof in the second direction; one end portion of each of the two push-pull rods is connected to one of the driving end portions, and the other end portion is in push-pull cooperation with the contact end portion of the other elastic member; wherein the magnetic circuit portion can drive the armature assembly to rotate so that the armature assembly drives the two push-pull rods to move synchronously and reversely along the first direction.

18. The relay of claim 17, wherein, The elastic member is provided with a third through hole at the assembly end portion; wherein, along the first direction, the elastic member closer to the armature assembly is a first elastic member, the other elastic member is a second elastic member, the push-pull rod in push-pull cooperation with the first elastic member is a first push-pull rod, and the other push-pull rod is a second push-pull rod, the second push-pull rod passing through the third through hole of the first elastic member.

19. The relay of claim 18, wherein, The third through hole is trapezoidal or triangular, and the large end of the trapezoid or triangle faces the contact end portion.

20. The relay of claim 12, wherein, The two elastic members are two components that are completely identical in structure and axially symmetric in space, and the symmetry axis of the two elastic members is parallel to a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction.

21. The relay of claim 12, wherein, The two ends of the movable contact bridge in the third direction correspond to the static contact points of a pair of static conductive members located on the same side in the second direction, respectively, the third direction being perpendicular to the first direction and perpendicular to the second direction.

Images