Relay

Abstract

The present invention relates to the technical field of electronic control devices, and specifically to a relay. The relay comprises a movable contact assembly, a stationary contact assembly, a first elastic member and a second elastic member. The movable contact assembly is able to reciprocate in a first direction to come into contact with or separate from the stationary contact assembly. The movable contact assembly comprises a first movable contact piece and a second movable contact piece, and the first movable contact piece and the second movable contact piece are arranged in the first direction. The first elastic member is connected to the first movable contact piece, and the second elastic member is connected to the second movable contact piece. The first movable contact piece is able to move in the first direction relative to the stationary contact assembly, so as to drive the second movable contact piece to move in the first direction relative to the stationary contact assembly. Both the first elastic member and the second elastic member can be elastically deformed when the movable contact assembly is in contact with the stationary contact assembly, so as to apply pressure toward the stationary contact assembly to the first movable contact piece and the second movable contact piece, thereby independently controlling the contact pressure between each movable contact piece and the stationary contact assembly.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202510124978.7, filed on January 26, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of electronic control device technology, and more specifically, to a relay. Background Technology

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

[0004] High-voltage DC electrical appliances are a type of relay, comprising a stationary contact assembly and a moving contact assembly. When the moving contact assembly contacts the stationary contact assembly, the relay conducts. However, in existing technologies, the moving contact assembly exhibits high contact resistance when in contact with the stationary contact assembly, affecting the reliability of the relay. Summary of the Invention

[0005] This invention provides a relay to reduce contact resistance.

[0006] The relay provided in this embodiment of the invention includes a moving contact assembly, a stationary contact assembly, a first elastic element, and a second elastic element. The moving contact assembly is capable of reciprocating along a first direction to contact or separate from the stationary contact assembly. The moving contact assembly includes a first moving contact piece and a second moving contact piece, which are arranged along the first direction. The first elastic element is connected to the first moving contact piece, and the second elastic element is connected to the second moving contact piece. The first moving contact piece is capable of moving relative to the stationary contact assembly along the first direction to drive the second moving contact piece to move relative to the stationary contact assembly along the first direction. Both the first elastic element and the second elastic element are capable of elastic deformation when the moving contact assembly contacts the stationary contact assembly to apply pressure toward the stationary contact assembly to the first moving contact piece and the second moving contact piece.

[0007] According to some embodiments of the present invention, the relay further includes a push rod assembly, the push rod assembly including a push rod capable of reciprocating along the first direction to drive the moving contact assembly to move relative to the stationary contact assembly along the first direction; the second moving contact is located on the side of the first moving contact away from the push rod.

[0008] According to some embodiments of the present invention, the first elastic member can restrict the first movable contact piece from rotating about the axis of the push rod, and / or the second elastic member can restrict the second movable contact piece from rotating about the axis of the push rod.

[0009] According to some embodiments of the present invention, the first elastic element is a helical spring, or the first elastic element is a limiting leaf spring, the limiting leaf spring including a base and a branch, the base being connected to the branch, the branch being capable of elastic deformation to apply pressure toward the stationary contact assembly to the first moving contact piece.

[0010] According to some embodiments of the present invention, when the first elastic element is a limiting leaf spring, the branch portion includes two sub-parts, which are respectively located on both sides of the base portion along its length. Each sub-part includes a connecting portion and a deformable portion. One end of the deformable portion is connected to the base portion, and the other end of the deformable portion is connected to the connecting portion. The base portion is connected to the push rod assembly via a first anti-rotation structure. The connecting portion is connected to the first movable contact piece via a second anti-rotation structure. The deformable portion is capable of elastic deformation to apply pressure toward the static contact assembly to the first movable contact piece.

[0011] According to some embodiments of the present invention, the number of the moving contact components is at least two, and the first elastic member is used to enable each of the moving contact components to move relative to the stationary contact component;

[0012] Each of the moving contact components has a first moving contact piece connected to the first elastic element, or the number of the first elastic elements is the same as the number of the moving contact components, and they are connected one-to-one with the first moving contact pieces in each of the moving contact components.

[0013] Each of the moving contact components has a second moving contact piece connected to the second elastic element, or the number of the second elastic elements is the same as the number of the moving contact components, and they are connected one-to-one with the second moving contact pieces in each of the moving contact components.

[0014] According to some embodiments of the present invention, the push rod assembly further includes a contact bracket connected to the push rod to form an installation space, and the moving contact assembly is installed in the installation space via the first elastic member.

[0015] According to some embodiments of the present invention, the second elastic element is a helical spring or a leaf spring.

[0016] According to some embodiments of the present invention, the static contact assembly includes a pair of static contacts, wherein the first movable contact piece and the second movable contact piece are respectively used at their ends along a second direction to contact or separate from the pair of static contacts; wherein the second direction is the arrangement direction of the pair of static contacts.

[0017] According to some embodiments of the present invention, the first movable contact includes a non-parallel first wall and a second wall, the first wall extending along the second direction, the second wall being connected to the first wall, the second wall being used to contact or separate from a pair of stationary contacts, and the second movable contact being disposed on the side of the first wall facing the second wall.

[0018] According to some embodiments of the present invention, the second movable contact piece has a first station and a second station. At the first station, the movable contact assembly is separated from the stationary contact assembly, and the minimum distance between the second movable contact piece and the stationary contact assembly is less than the minimum distance between the first movable contact piece and the stationary contact assembly. At the second station, the movable contact assembly contacts the stationary contact assembly, and both the first elastic member and the second elastic member undergo elastic deformation to apply pressure toward the stationary contact assembly to the first movable contact piece and the second movable contact piece, respectively.

[0019] According to some embodiments of the present invention, the second elastic element is located between the first movable contact piece and the second movable contact piece, and the second elastic element is compressed when the second movable contact piece switches from the first station to the second station.

[0020] According to some embodiments of the present invention, the second elastic member includes a first spring sheet, the first spring sheet including a base portion extending along the second direction, the base portion including a first contact segment, an elastic bending segment and a second contact segment, the first contact segment and the second contact segment respectively connected to both ends of the elastic bending segment, the first contact segment and the second contact segment abutting against the first wall, the elastic bending segment protruding in a direction away from the first wall, and the second movable contact sheet abutting against the elastic bending segment.

[0021] According to some embodiments of the present invention, the second elastic member further includes a claw portion, the claw portion including a first claw and a second claw, the first claw and the second claw being respectively connected to both sides of the base plate portion along a third direction, the first claw and the second claw abutting against two sides of the second movable contact piece; wherein, the first direction and the second direction are perpendicular to the third direction.

[0022] According to some embodiments of the present invention, along the first direction, the first wall is provided with first contact points at both ends of the surface of the first wall facing the stationary contact, and the second movable contact is provided with second contact points at both ends of the surface of the second movable contact facing the stationary contact.

[0023] According to some embodiments of the present invention, the first movable contact further includes a third wall, the third wall being connected to the first wall and disposed opposite to the second wall, and third contact points being provided at both ends of the third wall facing the stationary contact, and the second movable contact being located between the second wall and the third wall.

[0024] According to some embodiments of the present invention, the first wall includes a first sub-wall and a second sub-wall, one end of the first sub-wall is connected to the second wall, and the other end of the first sub-wall extends toward the third wall; one end of the second sub-wall is connected to the third wall, and the other end of the second sub-wall extends toward the second wall, and there is a gap between the first sub-wall and the second sub-wall.

[0025] According to some embodiments of the present invention, the second wall is disposed at one end of the first wall along a third direction; the first movable contact piece further includes a limiting wall, which is disposed at the end of the first wall along the second direction.

[0026] According to some embodiments of the present invention, the first wall and the second wall are perpendicular.

[0027] According to some embodiments of the present invention, the height of the second movable contact is greater than the width of the second movable contact, and / or the height of the second wall is greater than the width of the second wall.

[0028] According to some embodiments of the present invention, the height of the third wall is greater than the width of the third wall.

[0029] According to some embodiments of the present invention, the second movable contact includes a bottom wall, a first side wall and a second side wall. Along a third direction, the first side wall and the second side wall are respectively connected to both sides of the bottom wall. The first side wall and the second side wall are provided with second contact points at both ends along a first direction, wherein the first direction and the second direction are perpendicular to the third direction.

[0030] Alternatively, the second moving contact includes a bottom wall, a third side wall, and a fourth side wall. Along the second direction, the third side wall and the fourth side wall are respectively connected to the two ends of the bottom wall, and the surfaces of the third side wall and the fourth side wall facing the stationary contact are provided with second contact points.

[0031] According to some embodiments of the present invention, the second elastic element is a compression spring, one end of which passes through the first wall and is connected to the second movable contact piece, and the other end of which is connected to the push rod assembly of the relay.

[0032] According to some embodiments of the present invention, the second elastic element is a second spring sheet, both ends of the second spring sheet are connected to the second movable contact piece, and the portion between the two ends of the second spring sheet passes through the first wall and is connected to the first elastic element.

[0033] According to some embodiments of the present invention, the first movable contact includes a fourth wall, a fifth wall and a sixth wall, the fourth wall is connected to the first elastic member, and the fifth wall and the sixth wall are respectively connected to the two ends of the fourth wall along the second direction;

[0034] The second movable contact includes a bottom wall, a fifth side wall, and a sixth side wall. The bottom wall is connected to the second elastic member, and the fifth and sixth side walls are respectively connected to the two ends of the bottom wall along the first direction.

[0035] According to some embodiments of the present invention, the second elastic element is a compression spring, one end of which passes through the fourth wall and is connected to the bottom wall, and the other end of which is connected to the push rod assembly of the relay.

[0036] According to some embodiments of the present invention, the second elastic element is a third elastic piece, both ends of which are connected to the bottom wall, and the portion between the two ends of the third elastic piece passes through the fourth wall and is connected to the first elastic element.

[0037] One embodiment of the above invention has at least the following advantages or beneficial effects:

[0038] (1) In the relay provided by the embodiments of the present invention, the first moving contact and the second moving contact form a reliable parallel circuit after contacting the stationary contact assembly, achieving the effect of current shunting and thus reducing contact resistance. When the moving contact assembly contacts the stationary contact assembly, the moving contact assembly is stopped by the stationary contact assembly. During the overtravel process, both the first elastic element and the second elastic element undergo elastic deformation to apply pressure toward the stationary contact assembly to the first moving contact and the second moving contact respectively, thereby enabling independent control of the contact pressure between each moving contact and the stationary contact assembly, ensuring that all moving contacts can reliably contact the stationary contact assembly.

[0039] (2) In the relay provided in the embodiments of the present invention, the first elastic element can restrict the first moving contact to rotate around the axis of the push rod, and the second elastic element can restrict the second moving contact to rotate around the axis of the push rod, thereby ensuring the consistency of the contact position between the moving contact assembly and the stationary contact assembly and improving the reliability of the relay.

[0040] (3) The first moving contact includes a non-parallel first wall and a second wall. The first wall extends along a second direction, and the second wall is connected to the first wall. The second wall is used to contact or separate from a pair of stationary contacts. The second moving contact is located on the side of the first wall facing the second wall. When the second wall and the second moving contact contact contact the pair of stationary contacts, they can be connected in parallel, thereby reducing the contact resistance of the relay and achieving low contact resistance in the relay. At the same time, by supporting the second wall and the second moving contact with the first wall, the support area is increased, which is beneficial to improving the connection stability of the moving contact assembly.

[0041] (4) When the second moving contact is in the first position, the moving contact assembly is separated from the stationary contact assembly. Since the minimum distance between the second moving contact and the stationary contact assembly is less than the minimum distance between the first moving contact and the stationary contact assembly, during the relay conduction process, the second moving contact first contacts the stationary contact assembly, and the first moving contact then contacts the stationary contact assembly. During the relay de-energization process, the first moving contact first separates from the stationary contact assembly, and the second moving contact then separates from the stationary contact assembly, thus realizing that the first moving contact only carries current and does not disconnect under load, ensuring the stability of the contact resistance. When the moving contact assembly contacts the stationary contact assembly, pressure is applied to the first and second moving contacts towards the stationary contact assembly respectively to independently control the contact pressure between each moving contact and the stationary contact assembly. Attached Figure Description

[0042] Figure 1 shows a schematic diagram of the structure of the relay provided in an embodiment of the present invention;

[0043] Figure 2 shows a cross-sectional view along line AA of Figure 1;

[0044] Figure 3 shows a cross-sectional view along line BB of Figure 1;

[0045] Figure 4 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0046] Figure 5 shows an exploded view of Figure 4;

[0047] Figure 6 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0048] Figure 7 shows an exploded view of Figure 6;

[0049] Figure 8 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0050] Figure 9 shows an exploded view of Figure 8;

[0051] Figure 10 shows a schematic diagram of the second moving contact piece in the moving contact assembly of the present invention in the first working position in an embodiment of the present invention;

[0052] Figure 11 shows a schematic diagram of the second moving contact piece in the moving contact assembly of the present invention in the second working position;

[0053] Figure 12 shows a schematic diagram of the structure of the first moving contact piece in the moving contact assembly of the present invention;

[0054] Figure 13 shows another structural schematic diagram of the first moving contact piece in the moving contact assembly in an embodiment of the present invention;

[0055] Figure 14 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0056] Figure 15 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0057] Figure 16 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0058] Figure 17 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0059] Figure 18 shows a schematic diagram of the structure of the first moving contact in the relay provided in an embodiment of the present invention;

[0060] Figure 19 shows a schematic diagram of the structure of the second elastic element in the relay provided in an embodiment of the present invention;

[0061] Figure 20 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention;

[0062] Figure 21 shows a partial structural schematic diagram of the relay provided in an embodiment of the present invention.

[0063] The reference numerals in the attached drawings are explained as follows: 10, moving contact assembly; 11, first moving contact piece; 111, first wall; 1110, limiting wall; 1111, first sub-wall; 1112, second sub-wall; 112, second wall; 1120, first contact point; 113, third wall; 1130, third contact point; 114, fourth wall; 115, fifth wall; 116, sixth wall; 12, second moving contact piece; 1200, second contact point; 120, bottom wall; 121, first side wall; 122, second side wall; 123, third side wall; 124, fourth side wall; 125, fifth side wall; 126, sixth side wall; 20, stationary contact assembly; 21, stationary contact; 30, first elastic element; 31, base; 32, branch; 321, sub-part; 3210, slit; 3211, connecting part. 3212, Deformation part; 40, Second elastic element; 41a, First spring piece; 4111, First contact section; 4112, Elastic bending section; 4113, Second contact section; 42a, Claw part; 4221, First claw; 4222, Second claw; 50, Push rod assembly; 51, Push rod; 511, Base; 5111, Insert piece; 512, Rod part; 52, Contact bracket; 521, Top plate; 522, Side plate; 5221, Card hole; 60, Anti-short circuit structure; 61, First magnetic conductive part; 62, Second magnetic conductive part; 70, Insulating cover; 81, Moving iron core; 82, Stationary iron core; 83, Coil frame; 84, Coil; 85, Return spring; 90, Yoke plate; 101, First limiting hole; 102, First limiting protrusion. Detailed Implementation

[0064] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0065] Referring to Figures 1 to 21, this embodiment provides a relay. In Figure 1, arrow D1 represents a first direction, arrow D2 represents a second direction, and arrow D3 represents a third direction. For example, the first, second, and third directions are perpendicular to each other. The relay includes a moving contact assembly 10, a stationary contact assembly 20, a first elastic element 30, and a second elastic element 40. The moving contact assembly 10 is capable of reciprocating along the first direction to contact or separate from the stationary contact assembly 20. The moving contact assembly 10 includes a first moving contact piece 11 and a second moving contact piece 12. A movable contact 11 and a second movable contact 12 are arranged along a first direction; a first elastic member 30 is connected to the first movable contact 11, and a second elastic member 40 is connected to the second movable contact 12; the first movable contact 11 can move relative to the stationary contact assembly 20 along the first direction to drive the second movable contact 12 to move relative to the stationary contact assembly 20 along the first direction; both the first elastic member 30 and the second elastic member 40 can undergo elastic deformation when the movable contact assembly 10 contacts the stationary contact assembly 20 to apply pressure toward the stationary contact assembly 20 to the first movable contact 11 and the second movable contact 12.

[0066] The relay provided in this embodiment forms a reliable parallel circuit after the first moving contact 11 and the second moving contact 12 contact the stationary contact assembly 20, achieving a current shunting effect and thus reducing contact resistance. When the moving contact assembly 10 contacts the stationary contact assembly 20, the moving contact assembly 10 is stopped by the stationary contact assembly 20, and both the first elastic member 30 and the second elastic member 40 undergo elastic deformation to apply pressure toward the stationary contact assembly 20 to the first moving contact 11 and the second moving contact 12. This allows for independent control of the contact pressure between each moving contact and the stationary contact assembly, ensuring that all moving contacts can reliably contact the stationary contact assembly to form a reliable parallel circuit.

[0067] The first elastic element 30 and the second elastic element 40 can take various forms. For example, the first elastic element 30 can be, but is not limited to, a coil spring or a leaf spring, and the second elastic element 40 can be, but is not limited to, a coil spring or a leaf spring. Specifically, the first elastic element 30 and the second elastic element 40 can both be leaf springs, or both can both be coil springs, or one of the first elastic element 30 and the second elastic element 40 can be a leaf spring and the other a coil spring.

[0068] It should be understood that the moving contact assembly 10 is not limited to a combination of two moving contacts (first moving contact 11 and second moving contact 12), but may also include more moving contacts, such as a third moving contact.

[0069] In one embodiment, the relay further includes an insulating cover 70, and the stationary contact assembly 20 is fixedly mounted on the insulating cover 70. The stationary contact assembly 20 includes a pair of stationary contacts 21, and the two ends of the first moving contact piece 11 and the second moving contact piece 12 along a second direction are respectively used to contact or separate from the pair of stationary contacts 21; wherein, the second direction is the arrangement direction of the pair of stationary contacts 21.

[0070] Specifically, the insulating cover 70 has an inner cavity, and at least a portion of each stationary contact 21 extends into the inner cavity of the insulating cover 70. Exemplarily, the top of the insulating cover 70 has two mounting holes, both of which communicate with the inner cavity. A pair of stationary contacts 21 are respectively disposed within the two mounting holes. Each stationary contact 21 can be connected to the insulating cover 70 by welding, but is not limited thereto.

[0071] Each stationary contact 21 has a stationary contact at its bottom, which can be integrally or separately disposed at the bottom of the stationary contact 21. One stationary contact 21 serves as the terminal for current inflow, and the other stationary contact 21 serves as the terminal for current outflow.

[0072] The moving contact assembly 10 has moving contacts at both ends, and each moving contact at both ends of the moving contact assembly 10 corresponds to a pair of stationary contacts 21. When the moving contact contacts the stationary contact, the relay is turned on.

[0073] In this embodiment, the insulating cover 70 is made of ceramic, that is, the insulating cover 70 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 70 can also be made of plastic.

[0074] The relay also includes a yoke plate 90, and an insulating cover 70 is connected to the yoke plate 90 via a frame. The frame can be a ring-shaped metal component, such as an iron-nickel alloy. One end of the frame is connected to the opening edge of the insulating cover 70, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame is connected to the yoke plate 90, also by laser welding, brazing, resistance welding, or adhesive bonding. A frame is provided between the insulating cover 70 and the yoke plate 90 to facilitate their connection.

[0075] In some embodiments, the relay further includes a short-circuit protection structure 60, which includes a first magnetically conductive portion 61 and a second magnetically conductive portion 62. The first magnetically conductive portion 61 is connected to the moving contact assembly 10, and the second magnetically conductive portion 62 is disposed on the side of the moving contact assembly 10 facing the stationary contact assembly 20. The short-circuit protection structure 60 is used to generate an attractive force in the contact closing direction on the plurality of moving contact assemblies 10 when a fault current exists in the moving contact assembly 10.

[0076] The relay also includes a drive assembly connected to the moving contact assembly 10. The drive assembly drives the moving contact assembly 10 to move in response to a control signal. The stationary contact assembly 20 is used to contact or separate from the moving contact assembly 10. The drive assembly may include a push rod assembly 50 and a magnetic circuit portion. The moving contact assembly 10 is mounted on the push rod assembly 50, and the magnetic circuit portion can drive the push rod assembly 50 to reciprocate along a first direction.

[0077] Referring to Figure 2, the magnetic circuit includes a moving iron core 81, a stationary iron core 82, a coil frame 83, and a coil 84. The coil frame 83 is a hollow cylindrical shape and is made of insulating material. The coil frame 83 is located on the side of the yoke plate 90 facing away from the stationary contact assembly 20, and the coil 84 is wound around the outer periphery of the coil frame 83.

[0078] Referring to Figure 3, the push rod assembly 50 includes a push rod 51, and a second movable contact 12 is located on the side of the first movable contact 11 away from the push rod 51.

[0079] The stationary iron core 82 has a through hole, and the push rod 51 is movably inserted into the through hole. The moving iron core 81 is arranged opposite to the stationary iron core 82 and is connected to the push rod 51. When the coil 84 is energized, it is attracted by the stationary iron core 82, thereby driving the push rod 51 to move in a first direction, which in turn drives the moving contact assembly 10 to move relative to the stationary contact assembly 20 in the first direction. The moving iron core 81 and the push rod 51 can be connected by screwing, riveting, welding or other methods.

[0080] The magnetic circuit also includes a reset spring 85, which is located between the stationary iron core 82 and the moving iron core 81. When the coil 84 is de-energized, the reset spring 85 resets the moving iron core 81.

[0081] It should be noted that when coil 84 is energized, stationary iron core 82 attracts moving iron core 81 to move upward, and moving iron core 81 can drive push rod 51 to move upward. When moving contact assembly 10 contacts stationary contact 21, moving contact assembly 10 is stopped by stationary contact assembly 20, while push rod 51 will continue to move upward until the overtravel is completed. During the overtravel process, the first elastic element 30 and the second elastic element 40, after being compressed, can provide elastic force to moving contact assembly 10 to provide contact pressure.

[0082] The push rod 51 extends along a first direction, and the moving contact assembly 10 is mounted on the push rod assembly 50. When the push rod 51 reciprocates along the first direction, it can drive the moving contact assembly 10 to reciprocate along the first direction, so that the moving contact assembly 10 contacts or separates from the stationary contact assembly 20. Since the second moving contact piece 12 is located on the side of the first moving contact piece 11 away from the push rod 51, when the push rod 51 moves along the first direction, the first moving contact piece 11 can move relative to the stationary contact assembly 20 along the first direction, so as to drive the second moving contact piece 12 to move relative to the stationary contact assembly 20 along the first direction.

[0083] In one embodiment, the push rod assembly 50 further includes a contact bracket 52 connected to the push rod 51 to form an installation space, and the moving contact assembly 10 is installed in the installation space via a first elastic member 30.

[0084] For example, the contact support 52 includes a top plate 521 and two side plates 522, which are integrally connected to the two sides of the top plate 521 along the third direction D3, forming an inverted U-shaped support. The moving contact assembly 10 is mounted in the installation space via a first elastic member 30. The upper end of the push rod 51 is connected to the bottom ends of the two side plates 522 of the contact support 52.

[0085] Referring to Figure 5, each side plate 522 of the contact support 52 has a locking hole 5221 at its bottom end. The push rod 51 includes a base 511 and a rod portion 512, with the base 511 connected to one axial end of the rod portion 512. Inserts 5111 are provided on both sides of the base 511, and the two inserts 5111 respectively engage with the two locking holes 5221 of the contact support 52, thus achieving a fixed connection between the base 511 and the contact support 52. A first elastic element 30 is disposed between the first movable contact piece 11 and the base 511, and is used to apply an elastic force to the first movable contact piece 11 to move towards the top plate 521.

[0086] Of course, in other embodiments, the contact support 52 can also be other structures, which will not be listed here.

[0087] In one embodiment, the first elastic element 30 can restrict the first moving contact 11 from rotating about the axis of the push rod 51, and the second elastic element 40 can restrict the second moving contact 12 from rotating about the axis of the push rod 51, thereby ensuring the consistency of the contact position between the moving contact assembly 10 and the stationary contact assembly 20 and improving the reliability of the relay.

[0088] In this embodiment, the first elastic element 30 and the first movable contact piece 11 can be connected through the second anti-rotation structure, and the first elastic element 30 and the base 511 can be connected through the first anti-rotation structure. The first elastic element 30 can not only provide contact pressure, but also restrict the rotation of the first movable contact piece 11 around the axis of the push rod 51.

[0089] In other embodiments, the first elastic element 30 may restrict the first movable contact 11 from rotating about the axis of the push rod 51, and the second elastic element 40 may restrict the second movable contact 12 from rotating about the axis of the push rod 51.

[0090] In some embodiments, as shown in FIG5, the first elastic element 30 is a limiting leaf spring, which includes a base 31 and a branch 32. The base 31 is connected to the branch 32, and the branch 32 is capable of elastic deformation to apply pressure toward the stationary contact assembly 20 to the first moving contact 11.

[0091] The base 31 is connected to the base 511 via a first anti-rotation structure. The branch 32 can be integrally formed with the base 31. The branch 32 is connected to the first movable contact 11 via a second anti-rotation structure. For example, the first anti-rotation structure includes a first limiting hole 101 and a first limiting protrusion 102. One of the first limiting hole 101 and the first limiting protrusion 102 is disposed on the first elastic member 30, and the other is disposed on the push rod assembly 50. The second anti-rotation structure includes a second limiting hole and a second limiting protrusion. One of the second limiting hole and the second limiting protrusion is disposed on the first elastic member 30, and the other is disposed on the first movable contact 11.

[0092] It is understandable that the first anti-rotation structure and the second anti-rotation structure can be the same or different. For example, the number of the first limiting hole 101 and the second limiting hole can both be one. In this case, both the first limiting hole 101 and the second limiting hole can be non-circular holes, such as rectangular holes, elliptical holes, or oblong holes. Correspondingly, the first limiting protrusion 102 and the second limiting protrusion are adapted to the shapes of the first limiting hole 101 and the second limiting hole, respectively. Of course, the number of the first limiting hole 101 can also be multiple, and the number of the second limiting hole can also be multiple.

[0093] For example, referring to Figure 5, the branch 32 includes two sub-parts 321, which are located on both sides of the base 31 in the width direction. The sub-parts 321 include a connecting part 3211 and a deformable part 3212. One end of the deformable part 3212 is connected to the base 31, and the other end of the deformable part 3212 is connected to the connecting part 3211. The base 31 is connected to the push rod assembly 50 through a first anti-rotation structure. The connecting part 3211 is connected to the first moving contact piece 11 through a second anti-rotation structure. The deformable part 3212 is capable of elastic deformation to apply pressure toward the static contact assembly 20 to the first moving contact piece 11.

[0094] Referring to Figure 5, the base 31 can be a sheet-like structure. The length direction of the base 31 is consistent with the second direction. That is, along the second direction, two sub-parts 321 are located on both sides of the base 31. The sub-parts 321 include a connecting part 3211 and a deformable part 3212. The connecting part 3211 and the deformable part are integrally formed.

[0095] In some embodiments, referring to FIG5, both sub-parts 321 are provided with buffer spaces. For example, the buffer space can be a slit 3210, which extends from the free end of the sub-part 321 to the base 31. The two slits 3210 are not connected to ensure the integrity of the limiting leaf spring. It should be understood that the limiting leaf spring shown in FIG5 is connected to the same first moving contact 11.

[0096] In some other embodiments, subsection 321 may not have a buffer space.

[0097] For example, there are two first limiting holes 101 and two first limiting protrusions 102. The shape of the first limiting hole 101 can be circular, and both first limiting holes 101 are located on the base 31. The first limiting holes 101 can penetrate both sides of the base 31 in the thickness direction, and the first limiting protrusions 102 protrude from the surface of the base 511 facing the first movable contact piece 11. The two first limiting protrusions 102 are arranged side-by-side along a third direction. The two first limiting protrusions 102 are respectively inserted into the two first limiting holes 101.

[0098] It is understood that in other embodiments, the first anti-rotation structure may also include a riveting structure, a welding structure, an adhesive structure, etc. When the first anti-rotation structure is a riveting structure, the base 31 is riveted to the push rod 51 assembly; when the first anti-rotation structure is a welding structure, the base 31 is welded to the push rod 51 assembly; when the first anti-rotation structure is an adhesive structure, the base 31 is bonded to the push rod 51 assembly.

[0099] In some embodiments, as shown in FIG7, the first elastic element 30 may also be a helical spring. The helical spring may be a compression spring or a tension spring. For example, the first elastic element 30 is a compression spring, and the number of compression springs is at least two. One end of the compression spring is connected to the push rod 51 through a first anti-rotation structure, and the other end of the compression spring is connected to the first moving contact 11 through a second anti-rotation structure.

[0100] Accordingly, the second elastic element 40 can be a leaf spring or a coil spring. For example, referring to Figures 4 and 5, when the second elastic element 40 is a leaf spring, in order to limit the rotation of the second movable contact 12 around the axis of the push rod 51, the second elastic element 40 can adopt a structure basically the same as that of the limiting leaf spring. Referring to Figure 5, the second elastic element 40 is a leaf spring, with both ends connected to the second movable contact 12. The first movable contact 11 is provided with a through hole, and the portion between the two ends of the second elastic element 40 passes through the through hole and connects to the first elastic element 30. For example, the portion between the two ends of the second elastic element 40 is also provided with two limiting holes, which respectively cooperate with two first limiting protrusions 102 on the push rod assembly 50 to achieve the anti-rotation function.

[0101] When the second elastic element 40 is a helical spring, the number of helical springs is at least two, in order to restrict the rotation of the second moving contact 12 around the axis of the push rod 51. Of course, the number of helical springs can also be one.

[0102] In one embodiment, the number of movable contact components 10 is at least two, and the first elastic member 30 is used to enable each movable contact component 10 to move relative to the stationary contact component 20; the first movable contact piece 11 in each movable contact component 10 is connected to the first elastic member 30, or the number of first elastic members 30 is the same as the number of movable contact components 10, and they are connected one-to-one with the first movable contact piece 11 in each movable contact component 10; the second movable contact piece 12 in each movable contact component 10 is connected to the second elastic member 40, or the number of second elastic members 40 is the same as the number of movable contact components 10, and they are connected one-to-one with the second movable contact piece 12 in each movable contact component 10.

[0103] In some embodiments, the first movable contact piece 11 in each movable contact assembly 10 is connected to the first elastic member 30, and the number of second elastic members 40 is the same as the number of movable contact assemblies 10, and they are connected one-to-one with the second movable contact piece 12 in each movable contact assembly 10.

[0104] Referring to Figures 8 and 9, the first elastic element 30 is a limiting leaf spring, which includes a base 31 and branches 32. The number of branches 32 is the same as the number of first movable contact pieces 11. All branches 32 are integrally formed with the base 31 to form a single limiting leaf spring. The branches 32 are capable of elastic deformation to apply pressure toward the stationary contact assembly 20 to the first movable contact piece 11 connected to them. A limiting leaf spring can achieve the function of limiting rotation.

[0105] The branch 32 includes two sub-branches 321, each sub-branches 321 including a connecting part 3211 and a deformation part 3212. There is a gap between the deformation parts 3212 of two adjacent sub-branches 321, so that the deformation parts 3212 connected to each moving contact assembly 10 can move independently when subjected to pressure, thereby adapting to different moving contact components and avoiding the problem of poor contact between some moving contact assemblies 10 and static contact assemblies 20 in multiple moving contact assemblies 10 due to processing errors.

[0106] The second elastic element 40 can be a first spring piece 41a. The number of first spring pieces 41a is the same as the number of moving contact components 10. Each first spring piece 41a is connected to a second moving contact piece 12 in the corresponding moving contact component 10 to apply pressure toward the stationary contact component 20 to the corresponding second moving contact piece 12.

[0107] Of course, the second elastic element 40 can also be a coil spring.

[0108] In some embodiments, when the first movable contact piece 11 in each movable contact assembly 10 is connected to the first elastic member 30, the second movable contact piece 12 in each movable contact assembly 10 may also be connected to the second elastic member 40. In this case, the second elastic member 40 may have a structure similar to that of the first elastic member 30.

[0109] In some embodiments, the number of first elastic members 30 is the same as the number of moving contact components 10, and they are connected one-to-one with the first moving contact piece 11 in each moving contact component 10. The number of second elastic members 40 is the same as the number of moving contact components 10, and they are connected one-to-one with the second moving contact piece 12 in each moving contact component 10.

[0110] For example, both the first elastic element 30 and the second elastic element 40 may include helical springs, such as compression springs. To limit the rotation of the first elastic element 30 and the second elastic element 40 about the axis of the push rod 51, both the first elastic element 30 and the second elastic element 40 may include at least two helical springs.

[0111] In some embodiments, the number of first elastic elements 30 is the same as the number of moving contact components 10, and they are connected one-to-one with the first moving contact piece 11 in each moving contact component 10. The second moving contact piece 12 in each moving contact component 10 is connected to the second elastic element 40.

[0112] Multiple moving contact components 10 form a reliable parallel circuit by contacting a pair of stationary contacts 21 at both ends along the second direction. The large number of contact points formed by the multiple moving contact components 10 and the stationary contacts 21 achieves a current shunting effect. Furthermore, based on the principle that the magnitude of the electro-repulsive force is proportional to the square of the current, the magnitude of the electro-repulsive force at each contact point is significantly reduced, which is beneficial for improving short-circuit withstand capability and enhancing the reliability of the relay.

[0113] When the relay includes multiple moving contact components 10, the first magnetic conductive part 61 can be provided in some of the moving contact components 10, or the first magnetic conductive part 61 can be provided in all of the moving contact components 10. The thickness of the first magnetic conductive part 61 in the multiple moving contact components 10 can be the same or different. Among them, the gap between the moving contact component 10 without the first magnetic conductive part 61 or with the stationary contact 21 is less than or equal to the contact gap between the remaining moving contact components 10 and the stationary contact 21.

[0114] By providing a first magnetic part 61 on a portion of the moving contact components 10, multiple moving contact components 10 move asynchronously when the relay is turned off. This not only facilitates the ultimate breaking between contacts but also enables delayed contact opening during short circuits, ensuring the reliability of the relay operation and extending the product's service life.

[0115] When a first magnetic conductive part 61 is provided in a portion of the moving contact assembly 10, the space occupied in the third direction can be reduced.

[0116] It should be noted that, due to the anti-rotation limiting function of the first elastic element 30, it is possible to configure the first magnetic conductor only for a portion of the moving contact pieces in the moving contact assembly 10. For example, only the first moving contact piece 11 can be configured with the first magnetic conductor, without configuring the second moving contact piece 12 with the first magnetic conductor. This reduces the space occupied in the first and third directions. At the same time, multiple moving contact assemblies 10 can be anti-rotated using only one first elastic element 30 and one contact bracket 52, thus eliminating the need to configure a contact bracket 52 for each moving contact assembly 10, reducing space occupied, making the parts easier to form and facilitating assembly.

[0117] In some embodiments, among the plurality of moving contact components 10, at least one moving contact component 10 has a length greater than the length of the other moving contact components 10. The length of the moving contact component 10 is the dimension of the moving contact component 10 in the second direction, and the two ends of the longer moving contact component 10 extend beyond the other moving contact components 10 along the length direction. That is, along the second direction, the ends of the other moving contact components 10 are located between the two ends of the longer moving contact component 10.

[0118] There are multiple moving contact components 10, and the multiple moving contact components 10 are of different lengths, so that the distance between two adjacent moving contact components 10 can be increased, so that the adjacent moving contact components 10 are not affected, and the distance between two adjacent short-circuit protection structures 60 can also be increased, so that the magnetic field between adjacent short-circuit protection structures 60 will not interfere.

[0119] For example, referring to Figures 8 and 9, there are three moving contact components 10, with the middle moving contact component 10 having a longer moving contact piece than the other two. Along a third direction, the three moving contact components 10 are named the first moving contact component, the second moving contact component, and the third moving contact component, respectively. The length of the second moving contact component is greater than the length of both the first and third moving contact components. The lengths of the first and third moving contact components can be the same or different.

[0120] The length of the second moving contact component is greater than the lengths of the first and third moving contact components, which causes the arc initiation points formed by the stationary contact component and multiple moving contact components to be staggered, thereby increasing the distance between the arc initiation points and preventing the arcs formed by multiple arc initiation points from gathering and affecting each other, which is beneficial to improving arc extinguishing performance.

[0121] For example, when the relay includes a first moving contact assembly, a second moving contact assembly, and a third moving contact assembly, a first magnetic conductive part 61 may be provided on the first moving contact assembly and the third moving contact assembly, while the first magnetic conductive part 61 may not be provided on the second moving contact assembly.

[0122] It should be noted that the number of moving contact components 10 can also be one, as shown in Figure 6. In a feasible embodiment, the relay includes a moving contact component 10, which has multiple contacts and can form a parallel circuit with the stationary contacts during use, thereby achieving a current shunting effect.

[0123] In one embodiment, the first moving contact 11 includes a non-parallel first wall 111 and a second wall 112. The first wall 111 extends along a second direction, and the second wall 112 is connected to the first wall 111. The second wall 112 is used to contact or separate from a pair of stationary contacts 21, and the second moving contact 12 is disposed on the side of the first wall 111 facing the second wall 112. When the second wall 112 and the second moving contact 12 contact the pair of stationary contacts 21, they can be connected in parallel, thereby reducing the contact resistance of the relay and achieving low contact resistance in the relay. At the same time, by supporting the second wall 112 and the second moving contact 12 with the first wall 111, the support area is increased, which is beneficial to improving the connection stability of the moving contact assembly 10.

[0124] Referring to Figure 12, the first movable contact 11 includes a non-parallel first wall 111 and a second wall 112. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The first wall 111 and the second wall 112 are plate-like structures. The first wall 111 and the second wall 112 are not parallel, meaning that there is a preset angle between the first wall 111 and the second wall 112, which is greater than 0 degrees and less than 180 degrees. For example, the first wall 111 and the second wall 112 are perpendicular.

[0125] The first wall 111 and the second wall 112 of the first movable contact piece 11 can be an integrally formed structure, for example, the first wall 111 and the second wall 112 can be formed by bending a sheet metal. Alternatively, the first wall 111 and the second wall 112 can also be two independent structures, for example, the first wall 111 and the second wall 112 can be two independent sheets welded together.

[0126] The bottom surface of the first wall 111 is a planar or near-planar structure, and the bottom surface of the first wall 111 serves as the mounting surface during installation. The second wall 112 has a first contact 1120 at the end away from the first wall 111, and the first contact 1120 is used to contact the static contact assembly 20.

[0127] Referring to Figure 12, the first wall 111 and the second wall 112 are arranged vertically, and the first wall 111 and the second wall 112 are connected to form an "L"-shaped first movable contact piece 11. In the L-shaped structure of the first movable contact piece 11, the bottom surface of the first wall 111 serves as the mounting surface during installation. The structure is simple, taking into account both installation stability and space utilization. Under the condition of limited space in the second direction, it is convenient to install the movable contact assembly 10.

[0128] In one embodiment, along the first direction, the first wall 111 has first contacts 1120 at both ends of the surface facing the stationary contact 21, and the second moving contact 12 has second contacts 1200 at both ends of the surface facing the stationary contact 21. This allows the moving contact assembly 10 to have multiple contacts that can be connected in parallel, thereby reducing the contact resistance of the relay.

[0129] Referring to Figure 10, the first moving contact 11 also includes a third wall 113, which is connected to the first wall 111. The third wall 113 is disposed opposite to the second wall 112. Both ends of the third wall 113 facing the stationary contact 21 are provided with third contact points 1130. The second moving contact 12 is located between the second wall 112 and the third wall 113.

[0130] The third wall 113 and the second wall 112 are located on the same side of the first wall 111, and the third wall 113 and the second wall 112 can be symmetrically arranged, with a gap between them. The second wall 112 is perpendicular to the first wall 111, and the third wall 113 is perpendicular to the first wall 111. A third contact 1130 is provided at the end of the third wall 113 facing away from the first wall 111, which increases the number of relay contacts and thus reduces the contact resistance.

[0131] The third wall 113 and the first wall 111 can be a single-piece structure, for example, the third wall 113 and the first wall 111 can be formed by bending a sheet of material. Of course, the third wall 113 and the first wall 111 can also be two independent structures, for example, the first wall 111 and the third wall 113 can be two independent sheets welded together.

[0132] In some embodiments, the first wall 111 extends from the second wall 112 to the third wall 113. That is, the first wall 111 is a continuous structure, and the first wall 111, the second wall 112, and the third wall 113 form a U-shaped or approximately U-shaped first movable contact piece 11. The U-shaped first movable contact piece 11 is easy to position during installation, which helps to improve manufacturing efficiency. Of course, in practical applications, the first movable contact piece 11 can also be other structures, such as an E-shaped or approximately E-shaped structure (at least three walls are arranged sequentially at intervals on the first wall), and the embodiments disclosed herein are not limited thereto.

[0133] In some other embodiments, the first wall 111 includes a first sub-wall 1111 and a second sub-wall 1112, one end of the first sub-wall 1111 is connected to the second wall 112, and the other end of the first sub-wall 1111 extends toward the third wall 113; one end of the second sub-wall 1112 is connected to the third wall 113, and the other end of the second sub-wall 1112 extends toward the second wall 112, and there is a gap between the first sub-wall 1111 and the second sub-wall 1112.

[0134] Referring to Figure 13, the first wall 111 has a discontinuous structure. For example, the first wall 111 includes a first sub-wall 1111 and a second sub-wall 1112. One end of the first sub-wall 1111 is connected to the second wall 112, and the other end of the first sub-wall 1111 extends toward the third wall 113. One end of the second sub-wall 1112 is connected to the third wall 113, and the other end of the second sub-wall 1112 extends toward the second wall 112. There is a gap between the first sub-wall 1111 and the second sub-wall 1112.

[0135] The first sub-wall 1111 and the second wall 112 form an L-shaped structure, and the second sub-wall 1112 and the third wall 113 form an L-shaped structure. That is, the first moving contact 11 is formed by two L-shaped components arranged face to face. The double L-shaped structure can reduce the processing difficulty of the first moving contact 11.

[0136] The second wall 112 is located at one end of the first wall 111 along a third direction. Referring to Figure 18, the first movable contact 11 may further include a limiting wall 1110, located at the end of the first wall 111 along a second direction. The limiting wall 1110 is used to limit the second movable contact 12 in the second direction, preventing the second movable contact 12 from moving in the first direction and detaching from the first movable contact 11. It also ensures the position of the second movable contact 12 relative to the first movable contact 11 in the first direction, preventing contact point shift, improving contact reliability, and ensuring consistent arc initiation points, reducing fluctuations in arc extinguishing time, and facilitating arc extinguishing.

[0137] The second movable contact 12 is disposed on the side of the first wall 111 facing the second wall 112, and the end of the second movable contact 12 away from the first wall 111 is provided with a second contact 1200. The second contact 1200, the first contact 1120 and the third contact 1130 together form a movable contact group for contacting the stationary contact.

[0138] In one embodiment, the second movable contact 12 has a first station and a second station. At the first station, the movable contact assembly 10 is separated from the stationary contact assembly 20, and the minimum distance between the second movable contact 12 and the stationary contact assembly 20 is less than the minimum distance between the first movable contact 11 and the stationary contact assembly 20. At the second station, the movable contact assembly 10 contacts the stationary contact assembly 20, and the first elastic member 30 and the second elastic member 40 both undergo elastic deformation to apply pressure toward the stationary contact assembly 20 to the first movable contact 11 and the second movable contact 12, respectively.

[0139] The first station is the initial state, where the moving contact assembly 10 and the stationary contact assembly 20 are separated, meaning the relay is in a non-conductive state. The second station is the working state, where the moving contact assembly 10 and the stationary contact assembly 20 are in contact, meaning the relay is in a conductive state. Referring to Figure 10, when the second moving contact 12 is in the first station, the top surface of the second contact 1200 on the second moving contact 12 is higher than the top surface of the first contact 1120 on the first moving contact 11, and there is a preset height difference H between the first contact 1120 on the first moving contact 11 and the second contact 1200 on the second moving contact 12. During relay conduction, the second moving contact 12 contacts the stationary contact assembly 20 first, followed by the first moving contact 11. During relay deactivation, the first moving contact 11 disconnects first, followed by the second moving contact 12, achieving current-carrying but not load-bearing disconnection by the first moving contact 11, ensuring the stability of the contact resistance.

[0140] In one embodiment, the second elastic element 40 is located between the first movable contact 11 and the second movable contact 12. When the second movable contact 12 switches from the first station to the second station, the second elastic element 40 is compressed. At the first station, the second movable contact 12, the first elastic element 30, and the first movable contact 11 are in a balanced state. At the second station, the stationary contact assembly 20 and the second movable contact 12 are in contact. The first elastic element 30 has a self-correcting function. The first elastic element 30 makes the first movable contact 11 and the second movable contact 12 relatively independent. In the contact direction, self-correction can be achieved by the first elastic element 30 to cooperate with the stationary contact assembly 20.

[0141] In one embodiment, referring to FIG19, the second elastic member 40 includes a first elastic piece 41a, the first elastic piece 41a includes a base portion extending along a second direction, the base portion includes a first contact segment 4111, an elastic bending segment 4112 and a second contact segment 4113, the first contact segment 4111 and the second contact segment 4113 are respectively connected to the two ends of the elastic bending segment 4112, the first contact segment 4111 and the second contact segment 4113 abut against the first wall 111, the elastic bending segment 4112 protrudes in a direction away from the first wall 111, and the second movable contact piece 12 abuts against the elastic bending segment 4112.

[0142] Referring to Figure 19, the second elastic member 40 also includes a claw portion 42a, which includes a first claw 4221 and a second claw 4222. The first claw 4221 and the second claw 4222 are respectively connected to the two sides of the base plate along the third direction. The first claw 4221 and the second claw 4222 abut against the two sides of the second movable contact piece 12. The first direction, the second direction and the third direction are perpendicular to each other.

[0143] The second moving contact 12 is positioned and its posture adjusted by the first claw 4221 and the second claw 4222, enabling the moving contact assembly 10 to achieve self-correction during movement. This avoids friction or collision between the second moving contact 12 and the first moving contact 11, reducing the risk of jamming / high resistance caused by friction and scraping. It also ensures the gap between the sidewalls of the second moving contact 12 and the first moving contact 11, guaranteeing that the second moving contact 12 is positioned at the center of the first moving contact 11 along the second direction. This prevents the contact point from shifting, improving contact reliability. Furthermore, it ensures consistent arc initiation points, reducing fluctuations in arc extinguishing time and facilitating arc extinguishing.

[0144] The first claw 4221 includes a first connecting section and a first locking section. The first connecting section has a bent structure. One end of the first connecting section is connected to the base plate portion, and the other end of the first connecting section is connected to the first locking section. The first locking section is in contact with the surface of the second movable contact 12, while the bent first connecting section is not in contact with the second movable contact 12. The second claw 4222 includes a second connecting section and a second locking section. The second connecting section has a bent structure. One end of the second connecting section is connected to the base plate portion, and the other end of the second connecting section is connected to the second locking section. The second locking section is in contact with the surface of the second movable contact 12, while the bent second connecting section is not in contact with the second movable contact 12.

[0145] In some embodiments, the height of the second movable contact 12 is greater than the width of the second movable contact 12, and / or the height of the second wall 112 is greater than the width of the second wall 112. The height of the second movable contact 12 is its dimension in the direction perpendicular to the first wall 111, and the width of the second movable contact 12 is its dimension in the third direction.

[0146] Based on this, the height of the second wall 112 is greater than the width of the second wall 112, and the height of the third wall 113 is greater than the width of the third wall 113. That is, the moving contact assembly 10 occupies more space in the height direction and less space in the width direction, which can save space in the width direction. It is suitable for relays with limited space in the width direction and effectively solves the contradiction between relay miniaturization and low contact resistance.

[0147] Referring to Figure 14, the second elastic element 40 is a second spring sheet, both ends of which are connected to the second movable contact piece 12. The portion between the two ends of the second spring sheet passes through the first wall 111 and is connected to the first elastic element 30. The sub-part 321 of the first elastic element 30 is provided with a slit 3210.

[0148] The structure of the second spring is basically the same as that of the second elastic element 40 shown in Figure 5.

[0149] Referring to Figure 14, the second moving contact 12 includes a bottom wall 120, a third side wall 123 and a fourth side wall 124. Along the second direction, the third side wall 123 and the fourth side wall 124 are respectively connected to the two ends of the bottom wall 120. The surfaces of the third side wall 123 and the fourth side wall 124 facing the stationary contact 21 are provided with second contact points 1200.

[0150] After the second moving contact 12 is combined with the first moving contact 11, each stationary contact 21 can contact three moving contacts, including the first contact 1120, the second contact 1200 and the third contact 1130.

[0151] Referring to Figure 15, there are two moving contact components 10. The structure of the moving contact components 10 is basically the same as that shown in Figure 14. The two moving contact components 10 are arranged along a third direction. There are two branches 32 of the first elastic member 30, and each branch 32 is connected to a first moving contact piece 11.

[0152] Referring to Figure 16, the second movable contact 12 includes a bottom wall 120, a first side wall 121 and a second side wall 122. Along the third direction, the first side wall 121 and the second side wall 122 are respectively connected to the two sides of the bottom wall 120. The first side wall 121 and the second side wall 122 are provided with second contacts 1200 at both ends along the first direction.

[0153] After the second moving contact 12 is combined with the first moving contact 11, each stationary contact 21 can contact four moving contacts, including a first contact 1120, a third contact 1130 and two second contacts 1200.

[0154] It should be noted that the structure of the second elastic element 40 shown in Figure 16 can also be basically the same as the structure of the second elastic element 40 shown in Figure 5, and will not be described again here.

[0155] Referring to Figure 17, there are two moving contact components 10. The structure of the moving contact components 10 is basically the same as that shown in Figure 16. The two moving contact components 10 are arranged along a third direction. There are two branches 32 of the first elastic member 30, and each branch 32 is connected to a first moving contact piece 11.

[0156] In other embodiments, the second elastic element 40 may also be a compression spring, with one end of the compression spring passing through the first wall 111 and connected to the second movable contact 12, and the other end of the compression spring connected to the push rod assembly 50 of the relay.

[0157] Referring to Figure 20, the first movable contact 11 includes a fourth wall 114, a fifth wall 115, and a sixth wall 116. The fourth wall 114 is connected to the first elastic member 30, and the fifth wall 115 and the sixth wall 116 are respectively connected to the two ends of the fourth wall 114 along the second direction. The second movable contact 12 includes a bottom wall 120, a fifth side wall 125, and a sixth side wall 126. The bottom wall 120 is connected to the second elastic member 40, and the fifth side wall 125 and the sixth side wall 126 are respectively connected to the two ends of the bottom wall 120 along the first direction.

[0158] For example, the fifth wall 115, the sixth wall 116, the fifth side wall 125 and the sixth side wall 126 can all be provided with moving contacts to form a moving contact group.

[0159] In some embodiments, the second elastic element 40 is a compression spring, one end of which passes through the fourth wall 114 and is connected to the bottom wall 120, and the other end of which is connected to the push rod assembly 50 of the relay.

[0160] In other embodiments, the second elastic element 40 is a third elastic piece, both ends of which are connected to the bottom wall 120, and the portion between the two ends of the third elastic piece passes through the fourth wall 114 and is connected to the first elastic element 30.

[0161] It should be noted that the structure of the third spring can be basically the same as that of the second elastic element 40 shown in Figure 5, and will not be described in detail here.

[0162] Referring to Figure 21, there are two moving contact components 10. The structure of the moving contact components 10 is basically the same as that shown in Figure 20. The two moving contact components 10 are arranged along a third direction. There are two branches 32 of the first elastic member 30, and each branch 32 is connected to a first moving contact piece 11.

[0163] Finally, it should be noted that the various embodiments / implementations provided by this invention can be combined with each other without creating contradictions, and will not be described in detail here.

[0164] In the embodiments of the invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the invention according to the specific circumstances.

[0165] In the description of the embodiments of the invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the invention.

[0166] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0167] The above are merely preferred embodiments of the invention and are not intended to limit the scope of the invention. Those skilled in the art will recognize that various modifications and variations can be made to the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A relay, characterized in that, include: Static contact components; A moving contact component is capable of reciprocating along a first direction to contact or separate from the stationary contact component; the moving contact component includes a first moving contact piece and a second moving contact piece, the first moving contact piece and the second moving contact piece are arranged along the first direction, the first moving contact piece is capable of moving relative to the stationary contact component along the first direction to drive the second moving contact piece to move relative to the stationary contact component along the first direction; The first elastic element is connected to the first movable contact piece; as well as The second elastic element is connected to the second movable contact piece. Both the first elastic element and the second elastic element are capable of elastic deformation when the moving contact assembly comes into contact with the stationary contact assembly, so as to apply pressure toward the stationary contact assembly to the first moving contact piece and the second moving contact piece.

2. The relay according to claim 1, characterized in that, It also includes a push rod assembly, which includes a push rod capable of reciprocating along the first direction to drive the moving contact assembly to move relative to the stationary contact assembly along the first direction; the second moving contact piece is located on the side of the first moving contact piece away from the push rod.

3. The relay according to claim 2, characterized in that, The first elastic element can restrict the first movable contact piece from rotating about the axis of the push rod, and / or the second elastic element can restrict the second movable contact piece from rotating about the axis of the push rod.

4. The relay according to claim 3, characterized in that, The first elastic element is a helical spring, or the first elastic element is a limiting leaf spring, the limiting leaf spring including a base and a branch, the base being connected to the branch, the branch being capable of elastic deformation to apply pressure toward the stationary contact assembly to the first moving contact piece.

5. The relay according to claim 4, characterized in that, When the first elastic element is a limiting leaf spring, the branch includes two sub-parts, which are respectively located on both sides of the base in the length direction. Each sub-part includes a connecting part and a deformable part. One end of the deformable part is connected to the base, and the other end of the deformable part is connected to the connecting part. The base is connected to the push rod assembly through a first anti-rotation structure. The connecting portion is connected to the first moving contact piece via a second anti-rotation structure; wherein the deformable portion is capable of elastic deformation to apply pressure toward the stationary contact assembly to the first moving contact piece.

6. The relay according to claim 1, characterized in that, The number of the moving contact components is at least two, and the first elastic member is used to enable each of the moving contact components to move relative to the stationary contact component. Each of the moving contact components has a first moving contact piece connected to the first elastic element, or the number of the first elastic elements is the same as the number of the moving contact components, and they are connected one-to-one with the first moving contact pieces in each of the moving contact components. Each of the moving contact components has a second moving contact piece connected to the second elastic element, or the number of the second elastic elements is the same as the number of the moving contact components, and they are connected one-to-one with the second moving contact pieces in each of the moving contact components.

7. The relay according to claim 2, characterized in that, The push rod assembly further includes a contact bracket, which is connected to the push rod to form an installation space, and the moving contact assembly is installed in the installation space via the first elastic element.

8. The relay according to any one of claims 1 to 7, characterized in that, The second elastic element is a helical spring or a leaf spring.

9. The relay according to any one of claims 1 to 7, characterized in that, The static contact assembly includes a pair of static contacts, and the first movable contact piece and the second movable contact piece are respectively used to contact or separate from the pair of static contacts at their two ends along a second direction; wherein, the second direction is the arrangement direction of the pair of static contacts.

10. The relay according to claim 9, characterized in that, The first movable contact includes a non-parallel first wall and a second wall, the first wall extending along the second direction, the second wall connected to the first wall, the second wall for contacting or separating from a pair of stationary contacts, and the second movable contact being disposed on the side of the first wall facing the second wall.

11. The relay according to claim 10, characterized in that, The second movable contact has a first station and a second station. At the first station, the movable contact component is separated from the stationary contact component, and the minimum distance between the second movable contact and the stationary contact component is less than the minimum distance between the first movable contact and the stationary contact component. At the second station, the moving contact assembly contacts the stationary contact assembly, and both the first elastic member and the second elastic member undergo elastic deformation to apply pressure toward the stationary contact assembly to the first moving contact piece and the second moving contact piece, respectively.

12. The relay according to claim 11, characterized in that, The second elastic element is located between the first movable contact piece and the second movable contact piece. When the second movable contact piece switches from the first station to the second station, the second elastic element is compressed.

13. The relay according to claim 12, characterized in that, The second elastic element includes a first spring sheet, which includes a base portion extending along the second direction. The base portion includes a first contact segment, an elastic bending segment, and a second contact segment. The first contact segment and the second contact segment are respectively connected to the two ends of the elastic bending segment. The first contact segment and the second contact segment abut against the first wall. The elastic bending segment protrudes in a direction away from the first wall. The second movable contact piece abuts against the elastic bending segment.

14. The relay according to claim 13, characterized in that, The second elastic element further includes a claw portion, which includes a first claw and a second claw. The first claw and the second claw are respectively connected to both sides of the base plate along a third direction, and the first claw and the second claw abut against the two sides of the second movable contact piece; wherein, the first direction and the second direction are perpendicular to the third direction.

15. The relay according to claim 10, characterized in that, Along the first direction, the first wall has first contact points at both ends of its surface facing the stationary contact, and the second moving contact has second contact points at both ends of its surface facing the stationary contact.

16. The relay according to claim 15, characterized in that, The first movable contact also includes a third wall, which is connected to the first wall and is disposed opposite to the second wall. The third wall has third contact points at both ends facing the stationary contact, and the second movable contact is located between the second wall and the third wall.

17. The relay according to claim 16, characterized in that, The first wall includes a first sub-wall and a second sub-wall. One end of the first sub-wall is connected to the second wall, and the other end of the first sub-wall extends toward the third wall. One end of the second sub-wall is connected to the third wall, and the other end of the second sub-wall extends toward the second wall. There is a gap between the first sub-wall and the second sub-wall.

18. The relay according to claim 10, characterized in that, The second wall is disposed at one end of the first wall along the third direction; the first movable contact piece also includes a limiting wall, which is disposed at the end of the first wall along the second direction.

19. The relay according to claim 10, characterized in that, The first wall and the second wall are perpendicular.

20. The relay according to claim 10, characterized in that, The height of the second movable contact is greater than the width of the second movable contact, and / or the height of the second wall is greater than the width of the second wall.

21. The relay according to claim 16, characterized in that, The height of the third wall is greater than the width of the third wall.

22. The relay according to claim 10, characterized in that, The second movable contact includes a bottom wall, a first side wall, and a second side wall. Along a third direction, the first side wall and the second side wall are respectively connected to both sides of the bottom wall. The first side wall and the second side wall are provided with second contact points at both ends along a first direction. The first direction and the second direction are perpendicular to the third direction. Alternatively, the second moving contact includes a bottom wall, a third side wall, and a fourth side wall. Along the second direction, the third side wall and the fourth side wall are respectively connected to the two ends of the bottom wall, and the surfaces of the third side wall and the fourth side wall facing the stationary contact are provided with second contact points.

23. The relay according to claim 10, characterized in that, The second elastic element is a compression spring. One end of the compression spring passes through the first wall and is connected to the second movable contact piece. The other end of the compression spring is connected to the push rod assembly of the relay.

24. The relay according to claim 10, characterized in that, The second elastic element is a second spring sheet, both ends of which are connected to the second movable contact piece. The portion between the two ends of the second spring sheet passes through the first wall and is connected to the first elastic element.

25. The relay according to claim 9, characterized in that, The first movable contact includes a fourth wall, a fifth wall, and a sixth wall. The fourth wall is connected to the first elastic element, and the fifth wall and the sixth wall are respectively connected to the two ends of the fourth wall along the second direction. The second movable contact includes a bottom wall, a fifth side wall, and a sixth side wall. The bottom wall is connected to the second elastic member, and the fifth and sixth side walls are respectively connected to the two ends of the bottom wall along the first direction.

26. The relay according to claim 25, characterized in that, The second elastic element is a compression spring. One end of the compression spring passes through the fourth wall and is connected to the bottom wall, while the other end of the compression spring is connected to the push rod assembly of the relay.

27. The relay according to claim 25, characterized in that, The second elastic element is a third elastic piece, both ends of which are connected to the bottom wall. The portion between the two ends of the third elastic piece passes through the fourth wall and is connected to the first elastic element.

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