Relay

Abstract

The present disclosure relates to a relay, comprising an insulating cover, a pair of stationary contacts, a movement assembly, and an anti-rotation structure. The pair of stationary contacts are connected to the insulating cover. The movement assembly comprises a push rod member and a movable contact assembly. The push rod member is used for driving the movable contact assembly to move so as to be in contact with or separated from the pair of stationary contacts. The anti-rotation structure is used for restricting rotation of the push rod member about an axis of the push rod member and for restricting rotation of the movable contact assembly about the axis of the push rod member.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202410695683.0, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure 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] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include a pair of stationary contacts, an insulating cover, a moving assembly, and a magnetic circuit. The moving assembly includes a moving contact, a push rod assembly, and a spring assembly. The moving contact is mounted on the push rod assembly via the spring assembly. The magnetic circuit includes a stationary iron core, a moving iron core, and a coil. The stationary iron core is fixedly disposed within the relay, and the moving iron core is connected to the push rod assembly. When the coil is energized, the stationary iron core generates a magnetic force that attracts the moving iron core, thereby causing the push rod assembly and the moving contact to move together, thus closing the contacts.

[0005] In related technologies, in order to limit the range of rotation of the moving component around the axis of the push rod member, a rib is usually provided on the inner wall of the insulating cover so that the side of the moving component and the rib are fitted with a small clearance.

[0006] However, after the relay has been opened and closed multiple times, the side of the moving component can easily come into contact with the raised rib and rub against it. On the one hand, as the number of frictions increases, the wear of the moving component intensifies, which in turn leads to a larger gap between the moving component and the raised rib. This causes the moving component to rotate around the axis of the push rod component to rotate more, affecting the contact position between the moving contact and the stationary contact, resulting in unstable contact resistance. On the other hand, the friction between the moving component and the raised rib can easily generate metal particles. When these metal particles fall onto the contact surface, they can easily cause the contact resistance to increase or even prevent the relay from conducting. Summary of the Invention

[0007] This disclosure provides a relay to improve the problem of unstable contact resistance or even failure to conduct in relays in the related art.

[0008] The relay of this disclosure embodiment includes:

[0009] Insulating cover;

[0010] A pair of stationary contacts are connected to the insulating cover;

[0011] A moving assembly, including a push rod member and a movable contact assembly, the push rod member being used to move the movable contact assembly to contact or separate from a pair of stationary contacts; and

[0012] An anti-rotation structure is provided to limit the rotation of the push rod member about its axis and to limit the rotation of the movable contact assembly about its axis.

[0013] According to some embodiments of this disclosure, the anti-rotation structure includes:

[0014] A first anti-rotation component is used to generate a first anti-rotation force to limit the rotation of the push rod member about the axis of the push rod member;

[0015] The second anti-rotation component generates a second anti-rotation force to limit the rotation of the movable contact component about the axis of the push rod member.

[0016] According to some embodiments of this disclosure, the first anti-rotation force is a first anti-rotation elastic force or a first anti-rotation magnetic force, and the second anti-rotation force is a second anti-rotation elastic force or a second anti-rotation magnetic force.

[0017] According to some embodiments of this disclosure, the first anti-rotation component is connected to or in contact with the push rod member;

[0018] The second anti-rotation component is connected to or in contact with the movable contact component.

[0019] According to some embodiments of this disclosure, the insulating cover has cylindrical sidewalls;

[0020] The first anti-rotation component is disposed between the cylindrical sidewall and the push rod component.

[0021] According to some embodiments of this disclosure, the push rod component includes a contact bracket, and the first anti-rotation component and the contact bracket are separate structures.

[0022] According to some embodiments of this disclosure, the stiffness of the first anti-rotation component is less than the stiffness of the contact support.

[0023] According to some embodiments of this disclosure, during overtravel, the first anti-rotation component contacts the cylindrical sidewall.

[0024] According to some embodiments of this disclosure, the first anti-rotation component is an elastic element;

[0025] When the first anti-rotation component comes into contact with the cylindrical sidewall, the first anti-rotation component is deformed by the compression of the cylindrical sidewall.

[0026] According to some embodiments of this disclosure, the push rod component includes a contact support, the contact support includes two side plates, the two side plates are arranged at intervals along a third direction, and the movable contact component is located between the two side plates; wherein, a pair of stationary contacts are arranged along a first direction, the movement direction of the movable component is defined as a second direction, and the first direction, the second direction, and the third direction are perpendicular to each other;

[0027] The cylindrical sidewall includes two second sidewalls arranged opposite each other along the third direction, and the two side plates respectively correspond to the two second sidewalls;

[0028] The first anti-rotation component includes at least two first anti-rotation elements, and at least one first anti-rotation element is provided between the corresponding second sidewall and the side plate.

[0029] According to some embodiments of this disclosure, the first anti-rotation member is connected to the side plate and is used to deform under pressure from the second side wall.

[0030] According to some embodiments of this disclosure, the number of the first anti-rotation component is two, which are respectively attached to the side surface of the two side plates facing away from the movable contact component;

[0031] The first anti-rotation component is made of a first elastic material.

[0032] According to some embodiments of this disclosure, the second anti-rotation component includes two second anti-rotation members, which are respectively attached to the side surface of the two side plates facing the movable contact component, and are used to deform under the pressure of the movable contact component;

[0033] The second anti-rotation component is made of a second elastic material.

[0034] According to some embodiments of this disclosure, the first anti-rotation component includes a first connecting portion and a first spring sheet portion. The first connecting portion is connected to the side plate, and the first spring sheet portion is connected to the first connecting portion and is deformed by being squeezed by the cylindrical side wall.

[0035] According to some embodiments of this disclosure, the contact support further includes a fixing plate, the fixing plate having protrusions at both ends along the third direction, each side plate having a mounting hole, and the two protrusions being respectively confined within the two mounting holes; the movable contact assembly is located within the space enclosed by the two side plates and the fixing plate;

[0036] Each of the first connecting portions has a first hook, and at least one of the first hooks is attached to the lower edge of the mounting hole and pressed against by the protrusion.

[0037] According to some embodiments of this disclosure, each of the side plates is connected to at least two of the first anti-rotation members, and at least two of the first hooks of the at least two first anti-rotation members are simultaneously suspended from the lower edge of the same mounting hole and simultaneously pressed against by one of the protrusions of the fixing plate.

[0038] According to some embodiments of this disclosure, the second anti-rotation component includes two second anti-rotation elements.

[0039] Two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly; the second anti-rotation member includes a second connecting part and a second spring part, the second connecting part is connected to the side plate, the second spring part is connected to the second connecting part and is deformed by the movable contact assembly; each second connecting part has a second hook, the lower edge of the mounting hole is provided with the second hook and is pressed by the protrusion; the second hook is stacked with the first hook and is pressed by the protrusion.

[0040] According to some embodiments of this disclosure, the first connecting portion is riveted or welded to the side plate.

[0041] According to some embodiments of this disclosure, the contact support further includes a fixing plate, the fixing plate having protrusions at both ends along the third direction, each side plate having a mounting hole, and the two protrusions being respectively confined within the two mounting holes; the movable contact assembly is located within the space enclosed by the two side plates and the fixing plate;

[0042] The second anti-rotation assembly includes two second anti-rotation elements, each of which contacts the movable contact assembly;

[0043] Two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly; the second anti-rotation member includes a second connecting part and a second spring part, the second connecting part is connected to the side plate, the second spring part is connected to the second connecting part and is deformed by the movable contact assembly; each second connecting part has a second hook, the lower edge of the mounting hole is provided with the second hook and is pressed by the protrusion.

[0044] According to some embodiments of this disclosure, the second sidewall has a sidewall body and a rib, the rib protruding from the inner surface of the sidewall body and extending along the second direction for contacting the first anti-rotation member.

[0045] According to some embodiments of this disclosure, the rib has an abutting surface and a guide slope. The abutting surface is used to abut against the first anti-rotation member, and the guide slope is connected to the abutting surface and extends obliquely from the abutting surface toward the sidewall body and away from the stationary contact, for guiding the first anti-rotation member to move to the abutting surface.

[0046] According to some embodiments of this disclosure, when the coil of the relay is de-energized, the first anti-rotation member does not contact the protruding rib.

[0047] According to some embodiments of this disclosure, the second anti-rotation assembly includes two second anti-rotation members, each of which contacts the movable contact assembly; two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly;

[0048] The first anti-rotation member and the second anti-rotation member located on both sides of the thickness direction of each side plate are connected by a bridging part, which is suspended from the upper edge of the side plate.

[0049] According to some embodiments of this disclosure, the first anti-rotation component, the bridging portion, and the second anti-rotation component are an integral structure.

[0050] According to some embodiments of this disclosure, the first anti-rotation member and the second anti-rotation member are connected by two bridging portions, the two bridging portions are arranged at intervals along the first direction and form a first notch;

[0051] The side plate has an insertion part that passes through the first notch.

[0052] According to some embodiments of this disclosure, the contact support further includes a fixing plate, the fixing plate having protrusions at both ends along the third direction, each side plate having a mounting hole, and the two protrusions being respectively confined within the two mounting holes; the movable contact assembly is located within the space enclosed by the two side plates and the fixing plate;

[0053] The fixing plate is also provided with two pressing parts at both ends along the third direction. The two pressing parts are arranged at intervals along the first direction and form a second notch. The protrusion is located in the second notch and the insertion part passes through the second notch.

[0054] The fixing plate presses against the two bridging portions between the first anti-rotation member and the second anti-rotation member at one end of the third direction.

[0055] According to some embodiments of this disclosure, the second anti-rotation component further includes an intermediate portion connected between the two second anti-rotation members.

[0056] According to some embodiments of this disclosure, the push rod component further includes a mounting base, the contact bracket is connected to the mounting base, and the intermediate portion is connected to the mounting base.

[0057] According to some embodiments of this disclosure, the intermediate portion and the two second anti-rotation components are an integral structure.

[0058] According to some embodiments of this disclosure, the first anti-rotation member is connected to the second sidewall.

[0059] According to some embodiments of this disclosure, the second anti-rotation component includes at least two pairs of first magnets, one of the first magnets in each pair is connected to the movable contact component, and the other first magnet is fixedly disposed relative to the insulating cover or fixedly connected to the push rod component; a first magnetic force is formed between the two pairs of first magnets, and the first magnetic force is used to limit the movable contact component from rotating about the axis of the push rod component;

[0060] The first anti-rotation component includes at least two pairs of second magnets, one of which in each pair is connected to the push rod member, and the other is fixed relative to the insulating cover. A second magnetic force is formed between the two pairs of second magnets, which is used to limit the push rod member from rotating about the axis of the push rod member.

[0061] According to some embodiments of this disclosure, the first magnetic force is a repulsive force or an attractive force.

[0062] According to some embodiments of this disclosure, when the first magnetic force is a repulsive force, the other first magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

[0063] According to some embodiments of this disclosure, when the first magnetic force is an attractive force, the other first magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

[0064] According to some embodiments of this disclosure, the second magnetic force is a repulsive force or an attractive force.

[0065] According to some embodiments of this disclosure, when the second magnetic force is a repulsive force, the other second magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

[0066] According to some embodiments of this disclosure, when the second magnetic force is an attractive force, the other second magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

[0067] According to some embodiments of this disclosure, the orthographic projections of the two first magnets in a pair on a target plane overlap with each other, and the orthographic projections of the two second magnets in a pair on the target plane overlap with each other.

[0068] Wherein, the arrangement direction of a pair of stationary contacts is defined as the first direction, the movement direction of the moving component is defined as the second direction, and a third direction is defined, wherein the first direction, the second direction, and the third direction are mutually perpendicular;

[0069] The target plane is perpendicular to the third direction.

[0070] According to some embodiments of this disclosure, when the coil of the relay is de-energized or energized, the orthographic projections of the two first magnets in a pair on the target plane overlap with each other, and the orthographic projections of the two second magnets in a pair on the target plane overlap with each other.

[0071] According to some embodiments of this disclosure, the second anti-rotation component includes at least two pairs of the first magnets arranged symmetrically about the axis of the push rod member; and / or, the first anti-rotation component includes at least two pairs of the second magnets arranged symmetrically about the axis of the push rod member.

[0072] According to some embodiments of this disclosure, the push rod component includes a contact support, the contact support includes two side plates, the two side plates are arranged at a distance, the movable contact assembly is located between the two side plates, and the movable contact assembly has side surfaces facing the two side plates respectively.

[0073] At least one pair of first magnets are provided between the corresponding side plate and the side surface, and the two first magnets in the pair are respectively connected to the side surface of the side plate facing the movable contact assembly and the side surface.

[0074] According to some embodiments of this disclosure, the movable contact assembly includes a movable contact piece and a lower magnetic conductor, the movable contact piece being used to contact or separate from a pair of stationary contacts, and the lower magnetic conductor being fixedly connected to the side of the movable contact piece facing away from the stationary contacts;

[0075] The relay also includes an upper magnetic conductor located on the side of the moving contact facing the stationary contact, and the upper magnetic conductor and the lower magnetic conductor are used to form a magnetic circuit;

[0076] The two outer sides of the lower magnetic conductor are the two side surfaces, and both are connected to the first magnet.

[0077] According to some embodiments of this disclosure, the insulating cover includes two spaced-apart second sidewalls, the arrangement direction of the two second sidewalls is the same as the arrangement direction of the two side plates, and the two side plates are located between the two second sidewalls.

[0078] At least one pair of second magnets are provided between the corresponding second sidewall and the side plate, and the two pairs of second magnets are respectively connected to the inner wall surface of the corresponding second sidewall and the outer surface surface of the side plate.

[0079] According to some embodiments of this disclosure, the second anti-rotation component includes six pairs of first magnets, with a pair of first magnets provided between the corresponding side plate and the side surface, and two pairs of first magnets provided between the corresponding second sidewall and the side surface. One of the first magnets in each pair of the two pairs of first magnets is connected to the end of the movable contact component that extends out of the contact bracket, and the other first magnet in each pair is connected to the inner wall surface of the second sidewall.

[0080] The two first magnets located on the same side surface are arranged symmetrically with respect to the second magnet on the side plate corresponding to the side surface.

[0081] According to some embodiments of this disclosure, both the first magnet and the second magnet are permanent magnets.

[0082] According to some embodiments of this disclosure, the insulating cover includes:

[0083] The top wall is connected to a pair of the aforementioned stationary contacts; and

[0084] A cylindrical sidewall is connected to the outer periphery of the top wall, and the anti-rotation structure is located within the space enclosed by the cylindrical sidewall.

[0085] According to some embodiments of this disclosure, the cylindrical sidewall further includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged at intervals along a first direction, and the two second sidewalls are arranged at intervals along a third direction. The two first sidewalls and the two second sidewalls are connected end to end to form a ring structure. The first direction is the arrangement direction of a pair of stationary contacts, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0086] According to some embodiments of this disclosure, the push rod component includes a push rod, a mounting base, and a contact bracket. The mounting base is connected to one axial end of the push rod, the contact bracket is connected to the mounting base, and the movable contact assembly passes through the space enclosed by the contact bracket.

[0087] The moving component further includes a first elastic element located between the mounting base and the movable contact component, for providing an elastic force to the movable contact component to move toward the stationary contact.

[0088] An embodiment of the above application has at least the following advantages or beneficial effects:

[0089] The relay of this disclosure includes an anti-rotation structure. This structure restricts the rotation of the push rod member relative to the insulating cover around the axis of the push rod member, and also restricts the rotation of the movable contact assembly relative to the push rod member around the axis of the push rod member. On the one hand, it reduces or even avoids the problem of metal particles and / or ceramic powder being generated and falling onto the contact surface due to frictional contact between the push rod member and / or the movable contact assembly and the insulating cover, leading to increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation. On the other hand, it prevents the rotation of the movable contact assembly from affecting the contact position with the stationary contact, ensuring the consistency of the contact position between the movable contact assembly and the stationary contact, and improving the stability of the contact resistance.

[0090] Furthermore, the push rod component includes a contact support. A first anti-rotation component is correspondingly disposed between the side wall of the insulating cover and the side plate of the contact support, which can restrict the contact support from rotating relative to the insulating cover about the axis of the push rod component. A second anti-rotation component is correspondingly disposed between the side plate of the contact support and the movable contact component, which can restrict the movable contact component from rotating relative to the contact support about the axis of the push rod component. By reducing the rotation amplitude of the contact support and / or the movable contact component, the contact friction between the contact support and the side wall of the insulating cover and / or the movable contact component is reduced, as is the noise generated by friction between the contact support and the side wall of the insulating cover and / or the movable contact component.

[0091] Furthermore, the first anti-rotation component is connected to the mounting hole of the side plate via the first hook. The mounting hole is used to limit the protrusion of the fixing plate. On the one hand, the first anti-rotation component can be firmly connected to the side plate and is not easy to fall off accidentally. On the other hand, the first anti-rotation component and the side plate can be connected without the need to add other connecting structures or connectors, which is convenient for assembly and saves costs.

[0092] Furthermore, the first hook of the first anti-rotation component and the second hook of the second anti-rotation component are connected to the same mounting hole on the side plate, and the first hook and the second hook are stacked. On the one hand, this improves the compactness of the structure after the side plate, the first anti-rotation component and the second anti-rotation component are assembled; on the other hand, it makes full use of the existing mounting holes on the side plate without the need to add an additional connection structure, which is both convenient for assembly and saves costs. Attached Figure Description

[0093] Figure 1 shows an exploded view of a relay according to an embodiment of the present disclosure.

[0094] Figure 2 shows a top view of a relay according to an embodiment of the present disclosure, in which the housing, coil frame, coil, U-shaped yoke, and arc extinguishing part are omitted.

[0095] Figure 3 shows a cross-sectional view along section line AA in Figure 2.

[0096] Figure 4 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the first embodiment of this disclosure.

[0097] Figure 5 shows a side view of the anti-rotation structure and moving component after assembly according to the first embodiment of this disclosure.

[0098] Figure 6 shows an exploded view of the anti-rotation structure and moving component according to the first embodiment of this disclosure.

[0099] Figure 7 shows a three-dimensional schematic diagram of the anti-rotation structure and moving components after assembly according to the second embodiment of this disclosure.

[0100] Figure 8 shows an exploded view of the anti-rotation structure and moving component according to the second embodiment of this disclosure.

[0101] Figure 9 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the third embodiment of this disclosure.

[0102] Figure 10 shows an exploded view of the anti-rotation structure and moving component according to the third embodiment of this disclosure.

[0103] Figure 11 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the fourth embodiment of this disclosure.

[0104] Figure 12 shows an exploded view of the anti-rotation structure and moving component according to the fourth embodiment of this disclosure.

[0105] Figure 13 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the fifth embodiment of this disclosure.

[0106] Figure 14 shows an exploded view of the anti-rotation structure and moving component according to the fifth embodiment of this disclosure.

[0107] Figure 15 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the sixth embodiment of this disclosure.

[0108] Figure 16 shows an exploded view of the anti-rotation structure and moving component according to the sixth embodiment of this disclosure.

[0109] Figure 17 shows a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the seventh embodiment of this disclosure.

[0110] Figure 18 shows an exploded view of the anti-rotation structure and moving component according to the seventh embodiment of this disclosure.

[0111] Figure 19 shows an exploded view of the anti-rotation structure and moving component according to the eighth embodiment of this disclosure.

[0112] Figure 20 shows a schematic diagram of the anti-rotation structure and moving component after assembly according to the ninth embodiment of this disclosure.

[0113] Figure 21 shows a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the anti-rotation structure, moving component and insulating cover of the tenth embodiment of the present disclosure, wherein the first anti-rotation member is not in contact with the rib.

[0114] Figure 22 shows a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the anti-rotation structure, moving component and insulating cover of the tenth embodiment of the present disclosure, wherein the first anti-rotation member is in contact with the rib.

[0115] Figure 23 shows a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the anti-rotation structure, moving component and insulating cover of the eleventh embodiment of the present disclosure.

[0116] Figure 24 shows a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the anti-rotation structure, moving component and insulating cover of the twelfth embodiment of this disclosure.

[0117] Figure 25 shows an exploded view of the anti-rotation structure, moving component, and insulating cover of the twelfth embodiment of this disclosure.

[0118] Figure 26 shows a three-dimensional schematic diagram of the anti-rotation structure and moving components after assembly according to the thirteenth embodiment of this disclosure.

[0119] Figure 27 shows an exploded view of the anti-rotation structure, moving component, and insulating cover according to the thirteenth embodiment of this disclosure. Detailed Implementation

[0120] 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 this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments 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.

[0121] It is understood that the terms "comprising" and "having," and any variations thereof, used in the embodiments of this disclosure, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or apparatus.

[0122] As shown in Figures 1 to 3, the relay of this embodiment includes a housing 10, an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing portion 26, a moving assembly 30, and a magnetic circuit portion 40. The insulating cover 21, the yoke plate 25, the pair of stationary contacts 22, the arc-extinguishing portion 26, the moving assembly 30, and the magnetic circuit portion 40 are disposed within the housing 10.

[0123] The outer casing 10 includes an upper casing 11 and a bottom casing 12, which are connected to form a chamber for accommodating an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing part 26, a moving assembly 30, and a magnetic circuit part 40.

[0124] As shown in Figure 3, the insulating cover 21 has an inner cavity 212. A pair of stationary contacts 22 are mounted on the top of the insulating cover 21. At least a portion of each stationary contact 22 extends into the inner cavity 212 of the insulating cover 21, and each stationary contact 22 also has a stationary contact point at its bottom. The stationary contact point can be integrally or separately disposed at the bottom of the stationary contact 22. One stationary contact 22 serves as the terminal for current inflow, and the other stationary contact 22 serves as the terminal for current outflow.

[0125] In this embodiment of the present disclosure, the top of the insulating cover 21 has two openings 211, each opening 211 communicating with the inner cavity 212. A pair of stationary contacts 22 are respectively disposed in the two openings 211. Furthermore, each stationary contact 22 can be connected to the insulating cover 21 by welding, but is not limited thereto.

[0126] It is understood that the insulating cover 21 can be made of ceramic material, that is, the insulating cover 21 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 21 can also be made of plastic material.

[0127] In this embodiment, the insulating cover 21 is made of ceramic and is connected to the yoke plate 25 via a frame 24. The frame 24 can be a ring-shaped metal part, such as an iron-nickel alloy. One end of the frame 24 is connected to the edge of the opening of the insulating cover 21, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame 24 is connected to the yoke plate 25, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame 24 is provided between the insulating cover 21 and the yoke plate 25 to facilitate their connection.

[0128] The insulating cover 21 includes a top wall 213 and a cylindrical side wall 214. One axial end of the cylindrical side wall 214 is connected to the outer periphery of the top wall 213, and the other axial end of the cylindrical side wall 214 is connected to the frame piece 24. The top wall 213 and the cylindrical side wall 214 together form an inner cavity 212.

[0129] The top wall 213 has two openings 211, and a pair of stationary contacts 22 are respectively inserted into the two openings 211. Each stationary contact 22 can be connected to the top wall 213 by welding, but is not limited to this.

[0130] Please refer to Figure 3. The moving component 30 includes a movable contact component 30a, a first elastic element 32, and a push rod component 33. The movable contact component 30a is movable between a first position in contact with a pair of stationary contacts 22 and a second position away from the pair of stationary contacts 22. The push rod component 33 is used to move the movable contact component 30a.

[0131] For ease of explanation, the arrangement direction of a pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the moving component 30 is defined as the second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The direction perpendicular to both the first direction D1 and the second direction D2 is defined as the third direction D3.

[0132] The movable contact assembly 30a is disposed inside the insulating cover 21 and includes a movable contact piece 31. The two ends of the movable contact piece 31 along the first direction D1 are respectively used to contact or separate from the bottom of a pair of stationary contacts 22.

[0133] The push rod member 33 is movably inserted through the first through hole 251 of the yoke plate 25, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 facing the stationary contact 22, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 away from the stationary contact 22.

[0134] The movable contact 31 is movably mounted on the portion of the push rod member 33 that extends from the side surface of the yoke plate 25 toward the stationary contact 22. The first elastic member 32 is connected to the push rod member 33 and the movable contact 31 and is used to apply an elastic force to the movable contact 31 toward the stationary contact 22 to provide contact pressure.

[0135] As an example, the first elastic element 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic elements 32 can be one or more. When the number of the first elastic elements 32 is multiple, all of the multiple first elastic elements 32 can be springs, or all of them can be leaf springs, or they can be a combination of leaf springs and springs. This disclosure does not particularly limit this.

[0136] A metal cover 27 is also provided on the side of the yoke plate 25 facing away from the stationary contact 22, and the metal cover 27 covers the first through hole 251 of the yoke plate 25. The portion of the push rod member 33 extending out of the side of the yoke plate 25 facing away from the stationary contact 22 is inserted into the metal cover 27.

[0137] Please refer to Figures 1 and 3. The magnetic circuit section 40 includes a moving iron core 41, a stationary iron core 42, a coil frame 43, and a coil 44. The coil frame 43 is a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke plate 25 facing away from the stationary contact 22 and surrounds the outer periphery of the metal cover 27. The coil 44 is wound around the outer periphery of the coil frame 43.

[0138] The stationary iron core 42 is fixedly disposed within the metal cover 27, with a portion of the stationary iron core 42 inserted into the first through hole 251. The stationary iron core 42 has a second through hole 421, which corresponds in position to the first through hole 251, allowing the push rod member 33 to be movably inserted into both the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed within the metal cover 27 and is positioned opposite the stationary iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33 and is attracted by the stationary iron core 42 when the coil 44 is energized. The moving iron core 41 and the push rod member 33 can be connected by screwing, riveting, welding, or other methods.

[0139] As shown in Figure 3, the magnetic circuit part 40 also includes a second elastic element 46, which is located inside the metal cover 27 and is disposed between the stationary iron core 42 and the moving iron core 41. It is used to reset the moving iron core 41 when the coil 44 is de-energized.

[0140] In one embodiment, the second elastic element 46 is a spring and is sleeved on the outer periphery of the push rod member 33, but is not limited thereto.

[0141] It should be noted that when the coil 44 is energized, the stationary iron core 42 attracts the moving iron core 41 to move upward, and the moving iron core 41 can drive the push rod component 33 to move upward. When the moving contact 31 contacts the stationary contact 22, the moving contact 31 is stopped by the stationary contact 22, while the push rod component 33 will continue to move upward until it has completed its overtravel.

[0142] During the overtravel process, the first elastic element 32, after being squeezed by the push rod member 33, can provide elastic force to the moving contact piece 31 to provide contact pressure.

[0143] As shown in Figures 1 and 3, the magnetic circuit section 40 also includes a U-shaped yoke 47. The U-shaped yoke 47 includes a bottom yoke plate 471 and two side yoke plates 472. The two side yoke plates 472 are respectively connected to both ends of the bottom yoke plate 471 along the first direction D1, and the two side yoke plates 472 are arranged opposite to each other along the first direction D1. The bottom yoke plate 471 is located on the side of the coil frame 43 facing away from the stationary contact 22, and the ends of the two side yoke plates 472 away from the bottom yoke plate 471 are respectively connected to both ends of the yoke plate 25 along the first direction D1. The coil 44, coil frame 43, metal cover 27, and moving iron core 41 are accommodated within the space enclosed by the yoke plate 25, the bottom yoke plate 471, and the two side yoke plates 472 of the U-shaped yoke 47.

[0144] As shown in Figure 1, the arc-extinguishing part 26 includes a permanent magnet 262, which is disposed on the outer surface of the insulating cover 21. By setting the permanent magnet 262 on the outer periphery of the insulating cover 21, a magnetic field can be formed around the stationary contact 22 and the moving contact 31. Therefore, under the action of the magnetic field, the electric arc generated between the stationary contacts 22 will be elongated in a direction away from each other, thus extinguishing the arc.

[0145] The arc-extinguishing section 26 also includes a yoke clamp 261, with a permanent magnet 262 disposed between the side surface of the yoke clamp 261 facing the insulating cover 21 and the outer peripheral surface of the insulating cover 21. The design of the yoke clamp 261 surrounding the permanent magnet 262 prevents the magnetic field generated by the permanent magnet 262 from spreading outwards and affecting the arc-extinguishing effect.

[0146] In one embodiment, the yoke clip 261 is made of a soft magnetic material, which may include, but is not limited to, iron, cobalt, nickel, and their alloys.

[0147] It is understood that the number of yoke clips 261 can be one or two. When there is one yoke clip 261, the yoke clip 261 forms a ring structure and surrounds the outer periphery of the insulating cover 21. When there are two yoke clips 261, each yoke clip 261 can be U-shaped and arranged opposite each other along the first direction D1, with the two yoke clips 261 respectively surrounding the two ends of the insulating cover 21 along the first direction D1.

[0148] Please refer back to Figure 2. The cylindrical sidewall 214 includes two first sidewalls 2141 and two second sidewalls 2142. The two first sidewalls 2141 are arranged opposite each other along a first direction D1, and the two second sidewalls 2142 are arranged opposite each other along a third direction D3. The two first sidewalls 2141 and the two second sidewalls 2142 are connected end to end to form a ring structure. The two second sidewalls 2142 are located around the first position and the second position.

[0149] It is understood that the present disclosure does not impose any particular limitation on the shape of the cylindrical sidewall 214. For example, the annular structure formed by the cylindrical sidewall 214 can be rectangular, circular, elliptical, etc.

[0150] As shown in Figures 4 to 6, the push rod component 33 includes a push rod 333, a mounting base 332, and a contact bracket 331. The mounting base 332 is connected to one axial end of the push rod 333, and the contact bracket 331 is connected to the mounting base 332. The push rod 333 is movably inserted through the first through hole 251 along the second direction D2. At least a portion of the movable contact assembly 30a is disposed within the space enclosed by the contact bracket 331, and a first elastic member 32 is disposed between the movable contact assembly 30a and the mounting base 332.

[0151] As shown in Figure 4, the contact support 331 includes two side plates 3311. One end of each side plate 3311 along the second direction D2 is connected to the mounting base 332, and the two side plates 3311 are spaced apart along the third direction D3. The movable contact piece 31 and the first elastic member 32 are located between the two side plates 3311. Each side plate 3311 has an inner side surface 3311a and an outer side surface 3311b arranged opposite to each other along the third direction D3. The inner side surface 3311a of each side plate 3311 faces the movable contact assembly 30a, and the outer side surface 3311b is arranged opposite to the inner side surface 3311a in the thickness direction (third direction D3) of the side plate 3311. The two inner side surfaces 3311a are arranged face-to-face along the third direction D3, and the two outer side surfaces 3311b are arranged opposite to each other along the third direction D3. In the third direction D3, the two side plates 3311 are located between two second side walls 2142 and are arranged face-to-face with the two second side walls 2142 respectively.

[0152] The mounting base 332 can be made of plastic material, and the two side plates 3311, push rod 333 and mounting base 332 can be integrally molded by injection molding, but are not limited thereto.

[0153] Optionally, a connecting plate 3314 (Figure 21) may also be connected between the two side plates 3311. The two ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of the two side plates 3311 along the second direction D2, and the mounting base 332 covers the outer periphery of the connecting plate 3314 and the connection position between the connecting plate 3314 and the side plates 3311. In this embodiment of the present disclosure, the two side plates 3311 and the connecting plate 3314 form a U-shape.

[0154] Please refer to Figure 4. The contact bracket 331 also includes a fixing plate 3312. The two ends of the fixing plate 3312 along the third direction D3 are respectively connected to the ends of the two side plates 3311 away from the connecting plate 3314. The movable contact assembly 30a and the first elastic member 32 are located in the space enclosed by the fixing plate 3312, the two side plates 3311 and the mounting base 332.

[0155] In one embodiment, the fixing plate 3312 has protrusions 3312a at both ends along the third direction D3, and each side plate 3311 has mounting holes 3313 that penetrate the inner side surface 3311a and the outer side surface 3311b, with the two protrusions 3312a respectively confined within the two mounting holes 3313.

[0156] Of course, in other embodiments, the connecting plate 3314 and the two side plates 3311 of the contact bracket 331 can also form an inverted U-shape. For example, the two ends of the connecting plate 3314 along the third direction D3 are integrally connected to the ends of the two side plates 3311 away from the mounting base 332, and the two side plates 3311 and the connecting plate 3314 form an inverted U-shape. The fixing plate 3312 is connected to the mounting base 332. For example, the push rod 333, the fixing plate 3312 and the mounting base 332 are integrally formed by injection molding. The two ends of the fixing plate 3312 along the third direction D3 extend from the outer surface of the mounting base 332, so that the two ends of the fixing plate 3312 are respectively connected to the ends of the two side plates 3311 away from the connecting plate 3314.

[0157] Please continue to refer to Figures 4 to 6. The moving component 30 also includes an upper magnet 34a (shown in Figure 5), which is fixedly connected to the side surface of the fixing plate 3312 facing the mounting base 332, for example by riveting, but not limited thereto.

[0158] The movable contact assembly 30a also includes a lower magnetic conductor 35a, which is fixedly connected to the side of the movable contact 31 facing away from the stationary contact 22. When both ends of the movable contact 31 contact the pair of stationary contacts 22, the lower magnetic conductor 35a, which moves together with the movable contact 31, approaches or contacts the upper magnetic conductor 34a, thereby forming a magnetic circuit around the movable contact 31 between the upper magnetic conductor 34a and the lower magnetic conductor 35a. When a short-circuit current passes through the movable contact 31, an attractive force is generated between the upper magnetic conductor 34a and the lower magnetic conductor 35a along the contact pressure direction. This attractive force can resist the electrodynamic repulsive force generated between the movable contact 31 and the stationary contact 22 due to the short-circuit current, ensuring that the movable contact 31 and the stationary contact 22 do not spring apart, thus providing short-circuit protection.

[0159] The upper magnetic conductor 34a may include one or more first magnetic conductors 34, and the lower magnetic conductor 35a may include one or more second magnetic conductors 35. The number of first magnetic conductors 34 and second magnetic conductors 35 may be the same or different.

[0160] For example, in one embodiment of this disclosure, there are two first magnetic conductors 34 and two second magnetic conductors 35; in another embodiment, there may be one first magnetic conductor 34 and multiple second magnetic conductors 35, and each second magnetic conductor 35 can form a magnetic circuit with the first magnetic conductor 34.

[0161] It is understandable that the first magnetic conductor 34 and the second magnetic conductor 35 can both be in the shape of a line, a U, an L, or an E. The first magnetic conductor 34 and the second magnetic conductor 35 can be made of magnetic materials such as iron, cobalt, nickel, and their alloys.

[0162] In another embodiment, the first magnetic conductor 34 can also be fixedly disposed relative to the insulating cover 21, for example, the first magnetic conductor 34 is connected to the insulating cover 21, or connected to the yoke plate 25 via a fixed bracket. In this way, the short-circuit resistance force is transferred to the stationary component, thus eliminating the need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short-circuit resistance.

[0163] In another embodiment, the distance between the first magnetic conductor 34 and the second magnetic conductor 35 can be designed to be variable. Specifically, the distance between the first magnetic conductor 34 and the second magnetic conductor 35 can be adjusted according to the magnitude of the current, thereby changing the magnitude of the attraction force generated between the first magnetic conductor 34 and the second magnetic conductor 35, which can meet the requirements of short circuit resistance and overload interruption.

[0164] As shown in Figures 4 to 6, the relay of this embodiment further includes an anti-rotation structure 60, with a cylindrical sidewall 214 surrounding the anti-rotation structure 60. The anti-rotation structure 60 is used to restrict the push rod member 33 from rotating about the axis of the push rod member 33, and to restrict the movable contact assembly 30a from rotating about the axis of the push rod member 33.

[0165] The relay of this embodiment includes an anti-rotation structure 60. The anti-rotation structure 60 can restrict the rotation of the push rod member 33 relative to the insulating cover 21 about the axis of the push rod member 33, and can also restrict the rotation of the movable contact assembly 30a relative to the push rod member 33 about the axis of the push rod member 33. On the one hand, it can reduce or even avoid the problem of metal particles and / or ceramic powder being generated and falling on the contact surface due to frictional contact between the push rod member 33 and / or the movable contact assembly 30a and the insulating cover 21, which leads to increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation. On the other hand, it avoids the contact position with the stationary contact 22 being affected by the rotation of the movable contact assembly 30a, ensuring the consistency of the contact position between the movable contact assembly 30a and the stationary contact 22, and improving the stability of the contact resistance.

[0166] As shown in Figures 4 to 6, the anti-rotation structure 60 includes a first anti-rotation component 610 and a second anti-rotation component 620. The first anti-rotation component 610 generates a first anti-rotation force to restrict the push rod member 33 from rotating about its axis. The second anti-rotation component 620 generates a second anti-rotation force to restrict the movable contact component 30a from rotating about its axis.

[0167] In one embodiment, the first anti-rotation force is a first anti-rotation elastic force or a first anti-rotation magnetic force, and the second anti-rotation force is a second anti-rotation elastic force or a second anti-rotation magnetic force. Of course, in other embodiments, the first anti-rotation force and the second anti-rotation force can also be other forces capable of preventing rotation besides elastic force and magnetic force.

[0168] The first anti-rotation component 610 is connected to the push rod member 33 and contacts the inner wall surface of the insulating cover 21, generating a first anti-rotation elastic force to restrict the push rod member 33 from rotating about its axis. The second anti-rotation component 620 is connected to the push rod member 33 and contacts the movable contact component 30a, generating a second anti-rotation elastic force to restrict the movable contact component 30a from rotating about its axis. It can be understood that the first anti-rotation elastic force refers to the rebound force of the first anti-rotation component 610 after deformation under pressure; the second anti-rotation elastic force refers to the rebound force of the second anti-rotation component 620 after deformation under pressure.

[0169] The first anti-rotation assembly 610 includes at least two first anti-rotation elements 611, each of which is in contact with the inner wall surface of the second sidewall 2142 of the insulating cover 21, and at least one first anti-rotation element 611 is connected to the side where the outer side surface 3311b of each side plate 3311 is located.

[0170] In this embodiment of the present disclosure, the first anti-rotation component 610 includes two first anti-rotation members 611, which are respectively connected to two side plates 3311 and are located on the side where the outer surface 3311b of the two side plates 3311 is located.

[0171] As an example, a first anti-rotation member 611 is disposed between the corresponding side plate 3311 and the second side wall 2142. The first anti-rotation member 611 is connected to the side plate 3311, and during overtravel, the first anti-rotation member 611 contacts the second side wall 2142. It can be understood that after the first anti-rotation member 611 contacts the second side wall 2142, the first anti-rotation member 611 can effectively limit the rotation of the contact bracket 331.

[0172] Furthermore, the side plate 3311 of the contact support 331 is located slightly above the center of the moving assembly 30. Connecting the first anti-rotation member 611 to the side plate 3311 further ensures the balance of the contact support 331 along the third direction D3. At the same time, the connection of the first anti-rotation member 611 to the side plate 3311 allows the side plate 3311 to absorb the vibration transmitted by the first anti-rotation member 611, reducing the impact on the stability of the moving contact 31.

[0173] It should be noted that during the overtravel process, the "contact" in the contact between the first anti-rotation component 611 and the second sidewall 2142 should be understood as active contact. That is, when the moving component 30 has not deflected and is in a normal motion state, the first anti-rotation component 611 is in contact with the second sidewall 2142, rather than the first anti-rotation component 611 only contacting the second sidewall 2142 after the moving component 30 has deflected. The active contact design between the first anti-rotation component 611 and the second sidewall 2142 of this disclosure can effectively suppress the deflection of the moving component 30 and reduce the magnitude of the deflection.

[0174] The contact between the first anti-rotation component 611 and the second sidewall 2142 can include two situations: the first is that the first anti-rotation component 611 is always in contact with the second sidewall 2142 during the entire movement of the moving component 30; the second is that when the relay coil is de-energized, the first anti-rotation component 611 is not in contact with the second sidewall 2142, and when the relay coil is energized, the first anti-rotation component 611 only contacts the second sidewall 2142 after the moving component 30 has moved a certain distance, and maintains this contact until the moving iron core 41 contacts the stationary iron core 42.

[0175] The first anti-rotation member 611 is an elastic member. When the first anti-rotation member 611 comes into contact with the second sidewall 2142, the first anti-rotation member 611 is deformed by the pressure of the second sidewall 2142. After the first anti-rotation member 611 deforms, it can generate a rebound force to further limit the deflection of the contact support 331.

[0176] As an example, the stiffness of the first anti-rotation component 611 is less than that of the contact support 331. The first anti-rotation component 611 and the contact support 331 are separate structures, facilitating differentiating their stiffness. This separate structure allows for different designs of their stiffnesses; for example, the first anti-rotation component 611 can have lower stiffness, while the contact support 331 has higher stiffness. This higher stiffness of the contact support 331 prevents deformation, ensuring that the position of the moving contact 31 is not shifted by the deformation of the contact support 331. This, in turn, ensures the consistency and stability of the contact between the moving contact 31 and the stationary contact 22, without affecting the effective operation of the relay. The lower stiffness of the first anti-rotation component 611 provides better resilience, preventing scratching of the inner wall surface of the cylindrical sidewall 214 while providing anti-rotation force.

[0177] For example, the contact support 331 is made of a metal material, and the first anti-rotation member 611 is made of a non-metallic elastic material. In one embodiment, the first anti-rotation member 611 can be made of rubber or plastic, wherein the plastic can be a wear-resistant flexible plastic. The first anti-rotation member 611, being made of an elastic material, reduces contact friction between the first anti-rotation member 611 and the second sidewall 2142 during the reciprocating motion of the moving assembly 30, and also reduces noise generated by friction between the first anti-rotation member 611 and the inner wall surface of the second sidewall 2142.

[0178] It is understandable that the stiffness of the first anti-rotation component 611 is less than that of the contact support 331, so that the contact support 331 can be used for stable support, and the first anti-rotation component 611 can be deformed under pressure to provide a rebound force.

[0179] It should be noted that designing the stiffness of the first anti-rotation component 611 to be less than the stiffness of the contact support 331 is not limited to setting different materials for the first anti-rotation component 611 and the contact support 331. For example, in other embodiments, it can also be designed such that, under the premise of the same material, the thickness of the first anti-rotation component 611 is less than the thickness of the side plate 3311 of the contact support 331, or the shape of the first anti-rotation component 611 is different from that of the contact support 331.

[0180] The first anti-rotation component 611 includes a first connecting portion 6111 and a first spring piece portion 6112. The first connecting portion 6111 is connected to the side plate 3311, and the first spring piece portion 6112 is connected to the first connecting portion 6111 and is deformed by being pressed against the inner wall surface of the insulating cover 21. The first spring piece portion 6112 is used to provide elastic force. Each first connecting portion 6111 has a first hook 6113. At least one first hook 6113 is hung on the lower edge of the mounting hole 3313 and is pressed against by the protrusion 3312a.

[0181] In this embodiment of the present disclosure, the first anti-rotation component 611 is connected to the mounting hole 3313 of the side plate 3311 via the first hook 6113. The mounting hole 3313 is used to limit the protrusion 3312a of the fixing plate 3312. On the one hand, the first anti-rotation component 611 can be firmly connected to the side plate 3311 and is not prone to accidental detachment. On the other hand, the first anti-rotation component 611 and the side plate 3311 can be connected without the need for additional connecting structures or connectors, which is convenient for assembly and saves costs.

[0182] In one embodiment, a plurality of first spring pieces 6112 are connected to one side of the first connecting portion 6111 along the second direction D2, and the plurality of first spring pieces 6112 of the first anti-rotation member 611 are arranged at intervals along the first direction D1.

[0183] Of course, in other embodiments, the first anti-rotation member 611 may also have a first spring section 6112.

[0184] As an example, the first spring portion 6112 has an arcuate surface that contacts the second sidewall 2142. The arcuate surface design allows for line contact between the first spring portion 6112 and the second sidewall 2142, which serves to prevent rotation and reduce the frictional resistance between the first spring portion 6112 and the second sidewall 2142 when the moving assembly 30 reciprocates along the second direction D2.

[0185] Referring again to Figures 4 to 6, the second anti-rotation assembly 620 includes two second anti-rotation elements 621, each of which is in contact with the movable contact assembly 30a. Two second anti-rotation elements 621 are respectively connected to the inner surface 3311a of the two side plates 3311.

[0186] Each second anti-rotation component 621 includes a second connecting portion 6211 and a second spring portion 6212. The second connecting portion 6211 is connected to the side plate 3311, and the second spring portion 6212 is connected to the second connecting portion 6211 and is deformed by being pressed by the movable contact assembly 30a. The second spring portion 6212 is used to provide elastic force. Each second connecting portion 6211 has a second hook 6213. The lower edge of the mounting hole 3313 is provided with the second hook 6213 and is pressed against by the protrusion 3312a. The second hook 6213 overlaps with the first hook 6113.

[0187] In other words, the first hook 6113 of the first anti-rotation component 611 and the second hook 6213 of the second anti-rotation component 621 are connected to the same mounting hole 3313 on the side plate 3311, and the first hook 6113 and the second hook 6213 are stacked. On the one hand, this improves the compactness of the structure after the side plate 3311, the first anti-rotation component 611 and the second anti-rotation component 621 are assembled; on the other hand, it makes full use of the existing mounting hole 3313 on the side plate 3311 without the need to add an additional connection structure, which is both convenient for assembly and saves costs.

[0188] The second spring portion 6212 has an arc-shaped surface that contacts the movable contact assembly 30a. The arc-shaped surface design allows for line contact between the second spring portion 6212 and the movable contact assembly 30a, which serves to prevent rotation and reduce the frictional resistance between the second spring portion 6212 and the movable contact assembly 30a when the movable assembly 30 reciprocates along the second direction D2.

[0189] The second anti-rotation component 620 also includes a middle portion 622, which is connected to the mounting base 332 and between the two second anti-rotation members 621. By providing the middle portion 622, the strength of the connection between the two second anti-rotation members 621 can be improved. The middle portion 622 has a central hole 6221, and the first elastic member 32 passes through the central hole 6221.

[0190] In one embodiment, the middle part 622 and the two second anti-rotation members 621 are an integral structure.

[0191] Of course, in other embodiments, the second anti-rotation component 621 and the side plate 3311 can also be connected by riveting, welding or other means.

[0192] As shown in Figures 7 and 8, the similarities between the second embodiment and the first embodiment will not be repeated here. The difference is that the first connecting part 6111 is riveted to the side plate 3311.

[0193] In detail, the first connecting part 6111 and the side plate 3311 are provided with a riveting post on one and a riveting hole on the other, and the riveting post is riveted into the riveting hole.

[0194] For example, the outer side 3311b of the side plate 3311 is provided with a plurality of rivet posts, and the first connecting part 6111 has a plurality of rivet holes. The number of rivet posts is the same as the number of rivet holes, and the plurality of rivet posts are riveted into the plurality of rivet holes respectively.

[0195] Of course, in another embodiment, the rivet post may protrude from the side surface of the first connecting part 6111 facing the side plate 3311, and the rivet hole is provided on the side plate 3311.

[0196] Understandably, the second anti-rotation component 621 and the side plate 3311 can also be connected by riveting.

[0197] As shown in Figures 9 and 10, the similarities between the third embodiment and the first embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0198] The first connecting part 6111 is welded to the side plate 3311.

[0199] Understandably, the second anti-rotation component 621 and the side plate 3311 can also be connected by welding.

[0200] As shown in Figures 11 and 12, the similarities between the fourth embodiment and the first embodiment of this disclosure will not be repeated here. The differences are as follows:

[0201] Each side plate 3311 is connected to at least two first anti-rotation members 611, and at least two first hooks 6113 of the at least two first anti-rotation members 611 and the second hooks 6213 of the second anti-rotation members 621 are simultaneously suspended at the lower edge of the same mounting hole 3313 and are simultaneously pressed by a protrusion 3312a of the fixing plate 3312.

[0202] As an example, each side plate 3311 is connected to two first anti-rotation members 611, and the two first hooks 6113 of the two first anti-rotation members 611 are located in the same mounting hole 3313, and the two first hooks 6113 are arranged along the first direction D1. The second hook 6213 of the second anti-rotation member 621 is also located in the mounting hole 3313, and simultaneously covers the two first hooks 6113.

[0203] Of course, in other embodiments, the two first hooks 6113 may also cover the second hook 6213 simultaneously.

[0204] As shown in Figures 13 and 14, the similarities between the fifth embodiment and the fourth embodiment of this disclosure will not be repeated here. The difference is that the first connecting part 6111 of the first anti-rotation member 611 is riveted to the side plate 3311.

[0205] In detail, the first connecting part 6111 and the side plate 3311 are provided with a riveting post on one and a riveting hole on the other, and the riveting post is riveted into the riveting hole.

[0206] For example, the outer side 3311b of the side plate 3311 is provided with a plurality of rivet posts, and the first connecting part 6111 has a plurality of rivet holes. The number of rivet posts is the same as the number of rivet holes, and the plurality of rivet posts are riveted into the plurality of rivet holes respectively.

[0207] As shown in Figures 15 and 16, the similarities between the sixth embodiment and the fourth embodiment of this disclosure will not be repeated here. The differences are as follows:

[0208] The first connecting part 6111 is welded to the side plate 3311.

[0209] As shown in Figures 17 and 18, the similarities between the seventh embodiment and the first embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0210] The first anti-rotation member 611 located on the outer side 3311b of each side plate 3311 is connected to the second anti-rotation member 621 located on the inner side 3311a of each side plate 3311 by a bridging part 612, which is suspended from the upper edge of the side plate 3311.

[0211] As an example, there are two bridging portions 612 connecting the first anti-rotation member 611 and the second anti-rotation member 621. The two bridging portions 612 are arranged at intervals along the first direction D1 and form a first notch 6121. The side plate 3311 has an insertion portion 3311c, which is inserted into the first notch 6121.

[0212] The fixing plate 3312 is provided with two pressing parts 3312b at both ends along the third direction D3. The two pressing parts 3312b are arranged at intervals along the first direction D1 and form a second notch 3312c. The protruding part 3312a is located in the second notch 3312c and the insertion part 3311c passes through the second notch 3312c. The two pressing parts 3312b at one end of the fixing plate 3312 along the third direction D3 press against the two bridging parts 612 between the first anti-rotation member 611 and the second anti-rotation member 621 respectively.

[0213] In this embodiment of the present disclosure, the insertion part 3311c passes through the first notch 6121 and the second notch 3312c, and the pressing part 3312b presses against the bridging part 612, thereby improving the firmness of the connection between the anti-rotation structure 60 and the side plate 3311 and the fixing plate 3312.

[0214] In one embodiment, the first anti-rotation member 611, the bridging portion 612, and the second anti-rotation member 621 are an integral structure.

[0215] In this embodiment of the present disclosure, there is no intermediate portion 622 between the two second anti-rotation components 621.

[0216] As shown in Figure 19, the similarities between the eighth embodiment and the seventh embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0217] An intermediate portion 622 is provided between the two second anti-rotation components 621, and the intermediate portion 622 is connected to the mounting base 332. By providing the intermediate portion 622, the connection between the two second anti-rotation components 621 can be strengthened. The intermediate portion 622 has a central hole 6221, and the first elastic member 32 passes through the central hole 6221.

[0218] In one embodiment, the intermediate portion 622, the first anti-rotation member 611, the second anti-rotation member 621, and the bridging portion 612 are an integral structure.

[0219] As shown in Figure 20, the similarities between the ninth embodiment of this disclosure and the above embodiments will not be repeated, but the differences are as follows:

[0220] Each side panel 3311 has at least one first anti-rotation component 611 on one side of its outer surface 3311b, and at least one second anti-rotation component 621 on its inner surface 3311a. As shown in Figure 20, there are two first anti-rotation components 611 and two second anti-rotation components 621, and both are flat. The two first anti-rotation components 611 are respectively attached to the two outer surfaces 3311b, and the two second anti-rotation components 621 are respectively attached to the two inner surfaces 3311a. The first anti-rotation components 611 and the second anti-rotation components 621 can be bonded to the side panel 3311, snap-fitted, or integrally injection molded, but this is not a limitation.

[0221] Of course, the first anti-rotation component 611 and the second anti-rotation component 621 are not limited to flat plate shape. For example, in other embodiments, the first anti-rotation component 611 and the second anti-rotation component 621 can also be block-shaped, hemispherical, etc.

[0222] In one embodiment, the first anti-rotation member 611 is made of a first elastic material, and the second anti-rotation member 621 is made of a second elastic material. The first and second elastic materials can be rubber or plastic, wherein the plastic can be a wear-resistant flexible plastic. During the reciprocating motion of the moving assembly 30, this reduces contact friction between the first anti-rotation member 611 and the second sidewall 2142, and between the second anti-rotation member 621 and the movable contact assembly 30a, and also reduces noise generated by friction.

[0223] The first elastic material and the second elastic material can be the same or different.

[0224] Of course, in other embodiments, the first anti-rotation member 611 is connected to the inner wall surface of the second side wall 2142 and contacts the outer side surface 3311b of the side plate 3311; the second anti-rotation member 621 is connected to the movable contact assembly 30a and contacts the inner side surface 3311a of the side plate 3311.

[0225] Alternatively, the first anti-rotation component 611 is connected to the inner wall surface of the second side wall 2142, and the second anti-rotation component 621 is connected to the inner side surface 3311a of the side plate 3311.

[0226] Alternatively, the first anti-rotation component 611 is connected to the outer side 3311b of the side plate 3311, and the second anti-rotation component 621 is connected to the movable contact assembly 30a.

[0227] As shown in Figures 21 and 22, the tenth embodiment of this disclosure is similar to the above embodiments and will not be repeated. The difference is that:

[0228] The second sidewall 2142 has a sidewall body 21421 and a rib 21422. The rib 21422 protrudes from the inner surface of the sidewall body 21421 and extends along the second direction D2 for contacting the first anti-rotation member 611. The inner surface of the sidewall body 21421 refers to the side surface of the sidewall body 21421 facing the contact support 331.

[0229] In this embodiment of the present disclosure, the first anti-rotation member 611 is connected to the side plate 3311 and can contact the protruding rib 21422 instead of the side wall body 21421. On the one hand, the setting of the protruding rib 21422 can improve the structural strength of the insulating cover 21 and reduce the deformation of the insulating cover 21; on the other hand, the processing accuracy of the protruding rib 21422 is easier to control, thereby improving the dimensional accuracy of the contact between the protruding rib 21422 and the first anti-rotation member 611.

[0230] It is understood that the first anti-rotation member 611 and the second anti-rotation member 621 of the tenth embodiment can adopt the structure of any of the above embodiments, and will not be described again here. In addition, this disclosure does not particularly limit the shape of the rib 21422. For example, the rib 21422 can be a long strip protrusion, a hemispherical protrusion, a block protrusion, etc., and the surface of the rib 21422 that contacts the first anti-rotation member 611 can be a plane or an arc-shaped surface.

[0231] Referring again to Figures 21 and 22, the raised rib 21422 has an abutment surface 21422a and a guide slope 21422b. The abutment surface 21422a is used to abut against the first anti-rotation member 611. The guide slope 21422b is connected to the abutment surface 21422a and extends obliquely from the abutment surface 21422a toward the side wall body 21421 and away from the stationary contact 22, to guide the first anti-rotation member 611 to move to the abutment surface 21422a. When the relay coil is de-energized, the first anti-rotation member 611 does not contact the raised rib 21422.

[0232] In detail, when the relay coil is de-energized, the first anti-rotation member 611 does not contact the protruding rib 21422. When the relay coil is energized, the moving assembly 30 begins to move. In the initial stage of the moving assembly 30's movement, the first anti-rotation member 611 still does not contact the protruding rib 21422 to prevent the normal movement of the moving assembly 30 from being affected by contact friction between the first anti-rotation member 611 and the protruding rib 21422. As the moving assembly 30 continues to move, the guide slope 21422b first contacts the first anti-rotation member 611 to guide the first anti-rotation member 611 to move towards the abutment surface 21422a. As the moving assembly 30 moves further, the first anti-rotation member 611 moves from the guide slope 21422b to the abutment surface 21422a. Under the pressure of the abutment surface 21422a, the first anti-rotation member 611 deforms, generating a rebound force, thereby preventing the contact support 331 from deflecting.

[0233] It is worth mentioning that when the moving component 30 drives the first anti-rotation component 611 to start moving, and before the first anti-rotation component 611 contacts the protruding rib 21422, if the contact support 331 deflects, the contact support 331 can be straightened by the action of the guide inclined surface 21422b and the abutment surface 21422a.

[0234] As can be seen, the protruding rib 21422 is designed with a contact surface 21422a and a guide slope 21422b. On the one hand, the slope of the guide slope 21422b can play a corrective role during the assembly of the moving component 30 and the insulating cover 21. On the other hand, under the synergistic effect of the contact surface 21422a and the guide slope 21422b, the contact support 331 can be straightened and play an anti-deflection role.

[0235] As shown in Figure 23, the similarities between the eleventh embodiment of this disclosure and the above embodiments will not be repeated, but the differences are as follows:

[0236] The first anti-rotation component 611 is connected to the inner wall surface of the second side wall 2142 and is in contact with the side plate 3311.

[0237] For example, the connection between the first anti-rotation component 611 and the second sidewall 2142 can be achieved by welding, bonding, etc., which will not be listed in this disclosure.

[0238] As shown in Figures 24 and 25, the similarities between the eleventh embodiment of this disclosure and the above embodiments will not be repeated. The difference lies in that: the first anti-rotation component 610 is used to generate a first anti-rotation magnetic force, and the second anti-rotation component 620 is used to generate a second anti-rotation magnetic force. Specifically:

[0239] The second anti-rotation component 620 includes at least two pairs of first magnets 631. One first magnet 631 in each pair is connected to the movable contact component 30a, and the other first magnet 631 can be fixed relative to the insulating cover 21 or fixedly connected to the side plate 3311. A first magnetic force is formed between the two pairs of first magnets 631, and the at least two first magnetic forces form a second anti-rotation magnetic force to limit the rotation of the movable contact component 30a about the axis of the push rod component.

[0240] The first anti-rotation component 610 includes at least two second magnets 641, one of which is connected to the push rod member 33, and the other is fixed relative to the insulating cover 21. A second magnetic force is formed between the pairs of second magnets 641, and the at least two second magnetic forces form a first anti-rotation magnetic force to limit the push rod member 33 from rotating about the axis of the push rod member.

[0241] It should be noted that the fixed installation of the other first magnet 631 in each pair relative to the insulating cover 21 includes various embodiments. For example, the first magnet 631 is fixedly connected to the inner wall surface of one of the second sidewalls 2142; or, the first magnet 631 is fixedly connected to the outer wall surface of the second sidewall 2142; or, the first magnet 631 is fixedly connected to a bracket, which can be fixedly connected to the insulating cover 21 or to the yoke plate 25. The bracket can be located inside or outside the insulating cover 21.

[0242] Similarly, the second magnet 641 in each pair is fixed relative to the insulating cover 21 in various embodiments. For example, the second magnet 641 is fixedly connected to the inner wall surface of the second side wall 2142; or, the second magnet 641 is fixedly connected to the outer wall surface of the second side wall 2142; or, the second magnet 641 is fixedly connected to a bracket, which can be fixedly connected to the insulating cover 21 or to the yoke plate 25. The bracket can be located inside or outside the insulating cover 21.

[0243] When the first magnet 631 and the second magnet 641 are connected to the bracket, the first magnet 631 and the second magnet 641 can be connected to the same bracket or to two different brackets respectively.

[0244] It should also be noted that the first magnetic force is either repulsive or attractive, and the second magnetic force is either repulsive or attractive. When it is repulsive, the magnetic poles facing each other in a pair of magnets have the same polarity; when it is attractive, the magnetic poles facing each other in a pair of magnets have opposite polarities.

[0245] As an example, when the first magnetic force is repulsive, the other first magnet 631 in each pair is fixedly connected to the inner wall surface of the second sidewall 2142. In this way, under the action of the repulsive force, the first magnet 631 can fit more tightly with the corresponding inner wall surface of the second sidewall 2142.

[0246] When the first magnetic force is attractive, the other first magnet 631 in each pair is fixedly connected to the outer wall surface of the second sidewall 2142. In this way, under the action of the repulsive force, the first magnet 631 can fit more tightly with the corresponding outer wall surface of the second sidewall 2142.

[0247] When the second magnetic force is a repulsive force, the other second magnet 641 in each pair is connected to the inner wall surface of the second sidewall 2142. In this way, under the action of the repulsive force, the second magnet 641 can fit more tightly with the inner wall surface of the corresponding second sidewall 2142.

[0248] When the second magnetic force is attractive, the other second magnet 641 in each pair is connected to the outer wall surface of the second sidewall 2142. In this way, under the action of repulsive force, the second magnet 641 can fit more tightly with the outer wall surface of the corresponding second sidewall 2142.

[0249] The following explanation will be based on the example where the first magnet 631 in each pair is fixedly connected to the inner side surface 3311a of the side plate 3311, and the second magnet 641 in each pair is connected to the inner wall surface of the second side wall 2142, and both the first magnetic force and the second magnetic force are repulsive forces.

[0250] The second anti-rotation component 620 is connected to the push rod member 33 and the movable contact component 30a, and is used to generate a repulsive force between the push rod member 33 and the movable contact component 30a to limit the rotation of the movable contact component 30a around the axis of the push rod member 33; the first anti-rotation component 610 is connected to the inner wall surface of the push rod member 33 and the insulating cover 21, and is used to generate a repulsive force between the push rod member 33 and the insulating cover 21 to limit the rotation of the push rod member 33 around the axis of the push rod member 33.

[0251] In this embodiment of the present disclosure, under the action of repulsive force, the anti-rotation structure 60 can both suppress the rotation of the push rod member 33 relative to the insulating cover 21 and suppress the rotation of the movable contact assembly 30a relative to the push rod member 33.

[0252] The orthographic projections of the two pairs of first magnets 631 on a target plane overlap, and the orthographic projections of the two pairs of second magnets 641 on the target plane overlap, wherein the target plane is perpendicular to the third direction D3. When the relay coil is energized or de-energized, the orthographic projections of the two pairs of first magnets 631 on the target plane overlap, and the orthographic projections of the two pairs of second magnets 641 on the target plane overlap. That is to say, throughout the entire movement of the moving component 30, the orthographic projections of the two pairs of first magnets 631 on the target plane overlap, and the orthographic projections of the two pairs of second magnets 641 on the target plane overlap. Thus, the moving component 30 is subjected to magnetic force throughout its movement, thereby providing anti-rotation functionality throughout the entire movement of the moving component 30.

[0253] As an example, the two first magnets 631 in a pair have different orthographic projection areas on the target plane. For instance, the first magnet 631 connected to the side plate 3311 has a larger orthographic projection area, while the first magnet 631 connected to the movable contact assembly 30a has a smaller orthographic projection area. Furthermore, throughout the entire movement of the movable assembly 30, the orthographic projection of the first magnet 631 connected to the movable contact assembly 30a is always located within the orthographic projection of the first magnet 631 connected to the side plate 3311.

[0254] Similarly, the areas of the orthographic projections of the two paired second magnets 641 on the target plane are different. For example, the orthographic projection area of ​​the second magnet 641 connected to the insulating cover 21 is larger, while the orthographic projection area of ​​the second magnet 641 connected to the push rod member 33 is smaller. Furthermore, throughout the entire movement of the moving assembly 30, the orthographic projection of the second magnet 641 connected to the push rod member 33 is always located within the orthographic projection of the second magnet 641 connected to the insulating cover 21.

[0255] Of course, the sizes of the two pairs of first magnets 631 and the two pairs of second magnets 641 can also be reversed. That is, the projected area of ​​the first magnet 631 connected to the side plate 3311 is smaller, the projected area of ​​the first magnet 631 connected to the movable contact assembly 30a is larger, the projected area of ​​the second magnet 641 connected to the insulating cover 21 is smaller, and the projected area of ​​the second magnet 641 connected to the push rod assembly 33 is larger.

[0256] As shown in Figure 24, the first anti-rotation component 610 includes at least two pairs of second magnets 641 arranged symmetrically with respect to the axis of the push rod member 33; and / or, the second anti-rotation component 620 includes at least two pairs of first magnets 631 arranged symmetrically with respect to the axis of the push rod member 33.

[0257] As shown in Figures 24 and 25, the movable contact assembly 30a has side surfaces 30d facing the two side plates 3311 respectively. The movable contact 31 and / or the second magnetic conductor 35 have side surfaces 30d. For example, in one embodiment, the movable contact 31 has side surfaces 30d. Specifically, when there is one movable contact 31, the surfaces of the movable contact 31 facing away from each other along a third direction D3 are side surfaces 30d; when there are multiple movable contacts 31, the multiple movable contacts 31 are arranged side-by-side along a third direction D3, and the surfaces of the two outermost movable contacts 31 facing away from each other along a third direction D3 are side surfaces 30d. In another embodiment, the second magnetic conductor 35 has side surfaces 30d. Specifically, when there are multiple second magnetic conductors 35, the multiple second magnetic conductors 35 are arranged along a third direction D3, and the surfaces of the two outermost second magnetic conductors 35 facing away from each other along a third direction D3 are side surfaces 30d.

[0258] The second anti-rotation component 620 includes at least two pairs of first magnets 631, wherein the two first magnets 631 in each pair have the same polarity facing each other, and at least one pair of first magnets 631 is provided between the corresponding side plate 3311 and the side surface 30d. The two first magnets 631 in the pair are respectively connected to the inner side surface 3311a and the side surface 30d of the corresponding side plate 3311.

[0259] Therefore, along the third direction D3, both sides of the movable contact component 30a are subjected to repulsive forces, and the movable contact component 30a is essentially suspended between the two side plates 3311. When the movable contact component 30a deflects towards a certain side plate 3311, the distance between the two first magnets 631 decreases, thereby increasing the repulsive force. This repulsive force can prevent the movable contact component 30a from continuing to rotate towards that side plate 3311, thus suppressing the rotation of the movable contact component 30a.

[0260] In addition, since the side plate 3311 is a flat plate structure, the first magnet 631 can also be designed as a flat plate structure and attached to the surface of the side plate 3311, so that the surface area of ​​the magnet is larger, thereby increasing the repulsive force between the two pairs of first magnets 631 and improving the anti-deflection capability.

[0261] As an example, a pair of first magnets 631 are arranged face to face along the third direction D3 and spaced apart.

[0262] In this embodiment of the present disclosure, the two first magnets 631 in pairs are arranged at intervals, that is, there is a gap between the two first magnets 631 and they do not contact each other directly. In this way, the two first magnets 631 can both prevent rotation and avoid friction noise caused by direct contact between the two first magnets 631.

[0263] The first anti-rotation component 610 includes at least two pairs of second magnets 641. The two second magnets 641 in each pair have the same polarity facing each other. At least one pair of second magnets 641 is provided between the corresponding second sidewall 2142 and the side plate 3311. The two pairs of second magnets 641 are respectively connected to the inner wall surface of the corresponding second sidewall 2142 and the outer surface 3311b of the side plate 3311.

[0264] Of course, it is understandable that the second magnet 641 connected to the push rod component 33 may not be mounted on the side plate 3311 of the contact bracket 331. In other embodiments, the second magnet 641 may also be connected to both sides of the mounting base 332 along the third direction D3, or to both sides of the fixing plate 3312 along the third direction D3; or to both sides of the upper magnetic conductor 34a along the third direction D3. Wherein, when the second magnet 641 is connected to both sides of the upper magnetic conductor 34a along the third direction D3, if the upper magnetic conductor 34a has only one first magnetic conductor 34, then the second magnet 641 can be directly connected to both sides of the first magnetic conductor 34 along the third direction D3; if the upper magnetic conductor 34a includes multiple first magnetic conductors 34 arranged side by side along the third direction D3, then the second magnet 641 is connected to the outermost of the two outermost first magnetic conductors 34 among the multiple first magnetic conductors 34.

[0265] Furthermore, it is worth mentioning that the first magnet 631 connected to the movable contact assembly 30a can also be connected to the lower conductor magnet 35a.

[0266] For example, the two outer sides of the lower conductor magnet 35a along the third direction D3 are the two side surfaces 30d of the movable contact assembly 30a.

[0267] It should be noted that if the lower magnetic conductor 35a has only one second magnetic conductor 35, the first magnet 631 can be directly connected to both sides of the second magnetic conductor 35 along the third direction D3; if the lower magnetic conductor 35a includes multiple second magnetic conductors 35 arranged side by side along the third direction D3, the first magnet 631 is connected to the outermost of the two outermost second magnetic conductors 35 among the multiple second magnetic conductors 35.

[0268] As an example, both the first magnet 631 and the second magnet 641 are permanent magnets.

[0269] As shown in Figures 26 and 27, the similarities between the thirteenth and twelfth embodiments of this disclosure will not be repeated here, but the differences are as follows:

[0270] The second anti-rotation component 620 includes six pairs of first magnets 631, which are arranged between the corresponding side plate 3311 and the side surface 30d and between the corresponding side plate 3311 and the second side wall 2142 according to the twelfth embodiment. The remaining four pairs of first magnets 631 are arranged between the corresponding second side wall 2142 and the side surface 30d.

[0271] In this embodiment, for the movable contact component 30a, not only are paired first magnets 631 provided between the movable contact component 30a and the side plate 3311, but also between the movable contact component 30a and the second sidewall 2142. That is, a repulsive force can be generated between the movable contact component 30a and the side plate 3311, and also between the movable contact component 30a and the second sidewall 2142. This improves the ability of the anti-rotation structure 60 to suppress the deflection of the movable contact component 30a, ensures the consistency of the contact position between the movable contact component 30a and the stationary contact 22, and improves the stability of the contact resistance.

[0272] As shown in Figure 26, except for the two pairs of first magnets 631 located between the corresponding side plate 3311 and the side surface 30d, the other four pairs of first magnets 631 are located outside the contact support 331. One of the first magnets 631 in each pair is connected to the end of the movable contact assembly 30a that extends out of the contact support 331, and the other first magnet 631 is connected to the inner wall surface of the second side wall 2142; the two first magnets 631 located on the same side surface 30d are symmetrically arranged with the second magnet 641 on the side plate 3311 corresponding to the side surface 30d as the center.

[0273] In one embodiment, the first magnet 631 is connected to the movable contact 31. Specifically, two first magnets 631 are connected to each end of the movable contact 31 extending from the contact support 331, that is, four first magnets 631 are connected to the movable contact 31. The surface of the movable contact 31 along the third direction D3 is the side surface 30d.

[0274] Of course, in other embodiments, the first magnet 631 may also be connected to the second magnetic conductor 35 of the movable contact assembly 30a.

[0275] It is understandable that the first anti-rotation component 610 and the second anti-rotation component 620 may not both generate anti-rotation elastic force or anti-rotation magnetic force. For example, the first anti-rotation component 610 is designed to generate anti-rotation elastic force, while the second anti-rotation component 620 is designed to generate anti-rotation magnetic force; or, the first anti-rotation component 610 is designed to generate anti-rotation magnetic force, while the second anti-rotation component 620 is designed to generate anti-rotation elastic force.

[0276] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0277] The relay of this embodiment includes an anti-rotation structure 60. The anti-rotation structure 60 can restrict the rotation of the push rod member 33 relative to the insulating cover 21 about the axis of the push rod member 33, and can also restrict the rotation of the movable contact assembly 30a relative to the push rod member 33 about the axis of the push rod member 33. On the one hand, it can reduce or even avoid the problem of metal particles and / or ceramic powder being generated and falling on the contact surface due to frictional contact between the push rod member 33 and / or the movable contact assembly 30a and the insulating cover 21, which leads to increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation. On the other hand, it avoids the contact position with the stationary contact 22 being affected by the rotation of the movable contact assembly 30a, ensuring the consistency of the contact position between the movable contact assembly 30a and the stationary contact 22, and improving the stability of the contact resistance.

[0278] Furthermore, the push rod component 33 includes a contact support 331. A first anti-rotation component 610 is correspondingly disposed between the side wall of the insulating cover 21 and the side plate 3311 of the contact support 331, which can restrict the contact support 331 from rotating relative to the insulating cover 21 about the axis of the push rod component 33. A second anti-rotation component 620 is correspondingly disposed between the side plate 3311 of the contact support 331 and the movable contact component 30a, which can restrict the movable contact component 30a from rotating relative to the contact support 331 about the axis of the push rod component 33. By reducing the rotation amplitude of the contact support 331 and / or the movable contact component 30a, the contact friction between the contact support 331 and the side wall of the insulating cover 21 and / or the movable contact component 30a is reduced, as is the noise generated by friction between the contact support 331 and the side wall of the insulating cover 21 and / or the movable contact component 30a.

[0279] Furthermore, the first anti-rotation component 611 is connected to the mounting hole 3313 of the side plate 3311 via the first hook 6113. The mounting hole 3313 is used to limit the protrusion 3312a of the fixing plate 3312. On the one hand, the first anti-rotation component 611 can be firmly connected to the side plate 3311 and is not easy to fall off accidentally. On the other hand, the first anti-rotation component 611 and the side plate 3311 can be connected without the need to add other connecting structures or connectors, which is convenient for assembly and saves costs.

[0280] Furthermore, the first hook 6113 of the first anti-rotation component 611 and the second hook 6213 of the second anti-rotation component 621 are connected to the same mounting hole 3313 on the side plate 3311, and the first hook 6113 and the second hook 6213 are stacked. On the one hand, this improves the compactness of the structure after the side plate 3311, the first anti-rotation component 611 and the second anti-rotation component 621 are assembled; on the other hand, it makes full use of the existing mounting hole 3313 on the side plate 3311 without the need to add an additional connection structure, which is both convenient for assembly and saves costs.

[0281] It is understood that the various embodiments / implementations provided in this disclosure can be combined with each other without creating contradictions, and will not be described in detail here.

[0282] In the embodiments of this application, 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 expressly 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 this application based on the specific circumstances.

[0283] In the description of the embodiments of the application, 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 application 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 application.

[0284] 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 claims. 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.

[0285] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay characterized by comprising: include: Insulating cover; A pair of stationary contacts are connected to the insulating cover; The moving component includes a push rod member and a movable contact component, the push rod member being used to move the movable contact component to contact or separate from a pair of stationary contacts; as well as An anti-rotation structure is provided to limit the rotation of the push rod member about its axis and to limit the rotation of the movable contact assembly about its axis.

2. The relay according to claim 1, characterized in that The anti-rotation structure includes: A first anti-rotation component is used to generate a first anti-rotation force to limit the rotation of the push rod member about the axis of the push rod member; The second anti-rotation component generates a second anti-rotation force to limit the rotation of the movable contact component about the axis of the push rod member.

3. The relay according to claim 2, characterized in that The first anti-rotation force is a first anti-rotation elastic force or a first anti-rotation magnetic force, and the second anti-rotation force is a second anti-rotation elastic force or a second anti-rotation magnetic force.

4. The relay of claim 2, wherein The first anti-rotation component is connected to or in contact with the push rod component; The second anti-rotation component is connected to or in contact with the movable contact component.

5. The relay of claim 4, wherein The insulating cover has cylindrical sidewalls; The first anti-rotation component is disposed between the cylindrical sidewall and the push rod component.

6. The relay of claim 5, wherein The push rod component includes a contact bracket, and the first anti-rotation component and the contact bracket are separate structures.

7. The relay according to claim 6, characterized in that The stiffness of the first anti-rotation component is less than the stiffness of the contact bracket.

8. The relay of claim 5, wherein During the overtravel process, the first anti-rotation component comes into contact with the cylindrical sidewall.

9. The relay of claim 8, wherein The first anti-rotation component is an elastic element; When the first anti-rotation component comes into contact with the cylindrical sidewall, the first anti-rotation component is deformed by the compression of the cylindrical sidewall.

10. A relay according to any one of claims 5 to 9, characterised in that, The push rod component includes a contact bracket, the contact bracket includes two side plates, the two side plates are arranged at intervals along a third direction, and the movable contact component is located between the two side plates; wherein, a pair of stationary contacts are arranged along a first direction, the movement direction of the movable component is defined as a second direction, and the first direction, the second direction, and the third direction are perpendicular to each other; The cylindrical sidewall includes two second sidewalls arranged opposite each other along the third direction, and the two side plates respectively correspond to the two second sidewalls; The first anti-rotation component includes at least two first anti-rotation elements, and at least one first anti-rotation element is provided between the corresponding second sidewall and the side plate.

11. The relay according to claim 10, characterized in that, The first anti-rotation component is connected to the side plate and is used to deform under the pressure of the second side wall.

12. The relay according to claim 11, characterized in that, The first anti-rotation component is of two types, and is respectively attached to the side surface of the two side plates facing away from the movable contact assembly; The first anti-rotation component is made of a first elastic material.

13. The relay according to claim 12, characterized in that, The second anti-rotation component includes two second anti-rotation members, which are respectively attached to the side surface of the two side plates facing the movable contact component, and are used to deform under the pressure of the movable contact component; The second anti-rotation component is made of a second elastic material.

14. The relay according to claim 11, characterized in that, The first anti-rotation component includes a first connecting part and a first spring piece part. The first connecting part is connected to the side plate, and the first spring piece part is connected to the first connecting part and is deformed by being squeezed by the cylindrical side wall.

15. The relay according to claim 14, characterized in that, The contact support also includes a fixing plate, which has protrusions at both ends along the third direction. Each side plate has a mounting hole, and the two protrusions are respectively located within the two mounting holes. The movable contact assembly is located within the space enclosed by the two side plates and the fixing plate. Each of the first connecting portions has a first hook, and at least one of the first hooks is attached to the lower edge of the mounting hole and pressed against by the protrusion.

16. The relay according to claim 15, characterized in that, Each of the side plates is connected to at least two of the first anti-rotation members, and at least two of the first hooks of the at least two first anti-rotation members are simultaneously suspended from the lower edge of the same mounting hole and simultaneously pressed against by one of the protrusions of the fixing plate.

17. The relay according to claim 15 or 16, characterized in that, The second anti-rotation assembly includes two second anti-rotation components. Two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly; the second anti-rotation member includes a second connecting part and a second spring part, the second connecting part is connected to the side plate, the second spring part is connected to the second connecting part and is deformed by the movable contact assembly; each second connecting part has a second hook, the lower edge of the mounting hole is provided with the second hook and is pressed by the protrusion; the second hook is stacked with the first hook and is pressed by the protrusion.

18. The relay according to claim 14, characterized in that, The first connecting part is riveted or welded to the side plate.

19. The relay according to claim 18, characterized in that, The contact support also includes a fixing plate, which has protrusions at both ends along the third direction. Each side plate has a mounting hole, and the two protrusions are respectively located within the two mounting holes. The movable contact assembly is located within the space enclosed by the two side plates and the fixing plate. The second anti-rotation assembly includes two second anti-rotation elements, each of which contacts the movable contact assembly; Two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly; the second anti-rotation member includes a second connecting part and a second spring part, the second connecting part is connected to the side plate, the second spring part is connected to the second connecting part and is deformed by the movable contact assembly; each second connecting part has a second hook, the lower edge of the mounting hole is provided with the second hook and is pressed by the protrusion.

20. The relay according to claim 11, characterized in that, The second sidewall has a sidewall body and a rib. The rib protrudes from the inner surface of the sidewall body and extends along the second direction for contacting the first anti-rotation component.

21. The relay according to claim 20, characterized in that, The rib has an abutting surface and a guide slope. The abutting surface is used to abut against the first anti-rotation component. The guide slope is connected to the abutting surface and extends obliquely from the abutting surface toward the side wall body and away from the stationary contact, so as to guide the first anti-rotation component to move to the abutting surface.

22. The relay according to claim 21, characterized in that, When the relay coil is de-energized, the first anti-rotation component does not contact the protruding rib.

23. The relay according to claim 10, characterized in that, The second anti-rotation assembly includes two second anti-rotation members, each of which contacts the movable contact assembly; two second anti-rotation members are respectively connected to the side of the two side plates facing the movable contact assembly; The first anti-rotation member and the second anti-rotation member located on both sides of the thickness direction of each side plate are connected by a bridging part, which is suspended from the upper edge of the side plate.

24. The relay according to claim 23, characterized in that, The first anti-rotation component, the bridging part, and the second anti-rotation component are an integral structure.

25. The relay according to claim 23, characterized in that, Two bridging portions are connected between the first anti-rotation component and the second anti-rotation component. The two bridging portions are arranged at intervals along the first direction and form a first notch. The side plate has an insertion part that passes through the first notch.

26. The relay according to claim 25, characterized in that, The contact support also includes a fixing plate, which has protrusions at both ends along the third direction. Each side plate has a mounting hole, and the two protrusions are respectively located within the two mounting holes. The movable contact assembly is located within the space enclosed by the two side plates and the fixing plate. The fixing plate is also provided with two pressing parts at both ends along the third direction. The two pressing parts are arranged at intervals along the first direction and form a second notch. The protrusion is located in the second notch and the insertion part passes through the second notch. The fixing plate presses against the two bridging portions between the first anti-rotation member and the second anti-rotation member at one end of the third direction.

27. The relay according to any one of claims 23-26, characterized in that, The second anti-rotation component also includes a middle section, which is connected between the two second anti-rotation components.

28. The relay according to claim 27, characterized in that, The push rod component also includes a mounting base, the contact bracket is connected to the mounting base, and the middle part is connected to the mounting base.

29. The relay according to claim 27, characterized in that, The middle section and the two second anti-rotation components are an integral structure.

30. The relay according to claim 10, characterized in that, The first anti-rotation component is connected to the second sidewall.

31. The relay according to claim 4, characterized in that, The second anti-rotation component includes at least two pairs of first magnets, one of which is connected to the movable contact component, and the other of which is fixedly disposed relative to the insulating cover or fixedly connected to the push rod component. A first magnetic force is formed between the two first magnets in pairs, and the first magnetic force is used to limit the rotation of the movable contact assembly about the axis of the push rod member; The first anti-rotation component includes at least two pairs of second magnets, one of which in each pair is connected to the push rod member, and the other is fixed relative to the insulating cover. A second magnetic force is formed between the two pairs of second magnets, which is used to limit the push rod member from rotating about the axis of the push rod member.

32. The relay according to claim 31, characterized in that, The first magnetic force is either a repulsive force or an attractive force.

33. The relay according to claim 32, characterized in that, When the first magnetic force is a repulsive force, the other first magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

34. The relay according to claim 32, characterized in that, When the first magnetic force is an attractive force, the other first magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

35. The relay according to claim 31, characterized in that, The second magnetic force is either a repulsive force or an attractive force.

36. The relay according to claim 35, characterized in that, When the second magnetic force is a repulsive force, the other second magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

37. The relay according to claim 35, characterized in that, When the second magnetic force is an attractive force, the other second magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

38. The relay according to claim 31, characterized in that, The orthographic projections of the two first magnets in a pair on the target plane overlap with each other; the orthographic projections of the two second magnets in a pair on the target plane overlap with each other. Wherein, the arrangement direction of a pair of stationary contacts is defined as the first direction, the movement direction of the moving component is defined as the second direction, and a third direction is defined, wherein the first direction, the second direction, and the third direction are mutually perpendicular; The target plane is perpendicular to the third direction.

39. The relay according to claim 38, characterized in that, When the coil of the relay is de-energized or energized, the orthographic projections of the two pairs of first magnets on the target plane overlap with each other, and the orthographic projections of the two pairs of second magnets on the target plane overlap with each other.

40. The relay according to claim 31, characterized in that, The second anti-rotation component includes at least two pairs of the first magnets arranged symmetrically about the axis of the push rod member; and / or, the first anti-rotation component includes at least two pairs of the second magnets arranged symmetrically about the axis of the push rod member.

41. The relay according to claim 31, characterized in that, The push rod component includes a contact bracket, the contact bracket includes two side plates, the two side plates are arranged at a distance, the movable contact assembly is located between the two side plates, and the movable contact assembly has side surfaces facing the two side plates respectively. At least one pair of first magnets are provided between the corresponding side plate and the side surface, and the two first magnets in the pair are respectively connected to the side surface of the side plate facing the movable contact assembly and the side surface.

42. The relay according to claim 41, characterized in that, The movable contact assembly includes a movable contact piece and a lower magnetic conductor. The movable contact piece is used to contact or separate from a pair of stationary contacts. The lower magnetic conductor is fixedly connected to the side of the movable contact piece facing away from the stationary contacts. The relay also includes an upper magnetic conductor located on the side of the moving contact facing the stationary contact, and the upper magnetic conductor and the lower magnetic conductor are used to form a magnetic circuit; The two outer sides of the lower magnetic conductor are the two side surfaces, and both are connected to the first magnet.

43. The relay according to claim 41 or 42, characterized in that, The insulating cover includes two spaced-apart second sidewalls, the arrangement direction of the two second sidewalls is the same as the arrangement direction of the two side plates, and the two side plates are located between the two second sidewalls; At least one pair of second magnets are provided between the corresponding second sidewall and the side plate, and the two pairs of second magnets are respectively connected to the inner wall surface of the corresponding second sidewall and the outer surface surface of the side plate.

44. The relay according to claim 43, characterized in that, The second anti-rotation component includes six pairs of first magnets. A pair of first magnets is provided between the corresponding side plate and the side side, and two pairs of first magnets are provided between the corresponding second sidewall and the side side. One of the first magnets in each pair of the two pairs of first magnets is connected to the end of the movable contact component that extends out of the contact bracket, and the other first magnet in each pair is connected to the inner wall surface of the second sidewall. The two first magnets located on the same side surface are arranged symmetrically with respect to the second magnet on the side plate corresponding to the side surface.

45. The relay according to claim 31, characterized in that, Both the first magnet and the second magnet are permanent magnets.

46. ​​The relay according to claim 1, characterized in that, The insulating cover includes: The top wall is connected to a pair of the aforementioned stationary contacts; and A cylindrical sidewall is connected to the outer periphery of the top wall, and the anti-rotation structure is located within the space enclosed by the cylindrical sidewall.

47. The relay according to claim 46, characterized in that, The cylindrical sidewall also includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged at intervals along a first direction, and the two second sidewalls are arranged at intervals along a third direction. The two first sidewalls and the two second sidewalls are connected end to end to form a ring structure. The first direction is the arrangement direction of a pair of stationary contacts, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are perpendicular to each other.

48. The relay according to claim 1, characterized in that, The push rod component includes a push rod, a mounting base, and a contact bracket. The mounting base is connected to one axial end of the push rod, the contact bracket is connected to the mounting base, and the movable contact assembly passes through the space enclosed by the contact bracket. The moving component further includes a first elastic element located between the mounting base and the movable contact component, for providing an elastic force to the movable contact component to move toward the stationary contact.

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