Relay

Abstract

The present disclosure relates to the technical field of electronic control devices, and specifically relates to a relay, which comprise a contact structure, an insulating cover and a protective structure, wherein the contact structure comprises a plurality of stationary contacts and a movable contact piece, one end of each of the plurality of stationary contacts and the movable contact piece are all accommodated in the insulating cover, and two ends of the movable contact piece can come into contact with or disengage from the stationary contacts; and the protective structure is located outside the insulating cover, at least part of the protective structure is arranged on the circumferential side wall of the insulating cover, at least part of the protective structure is capable of elastic deformation and abuts against the circumferential side wall of the insulating cover, so as to apply to the insulating cover a pre-pressure toward an inner cavity of the insulating cover. The pre-pressure can offset some of an outward impact force, thus being conducive to improving safety performance; moreover, the pre-pressure restricts the insulating cover from expanding outward, thereby effectively protecting the insulating cover, especially the relatively weak circumferential side wall thereof, thus enhancing the structural strength of the insulating cover and further improving safety performance.

Description

Relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411375084.7, filed on September 29, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of electronic control devices, in particular to a relay. BACKGROUND

[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 usually applied in an automatic control circuit. A relay is actually a kind of "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic regulation, safety protection, and circuit conversion in a circuit.

[0004] In related technologies, for a high-voltage direct-current relay, the contact system needs to be packaged with an insulating cover. In order to ensure the contact resistance reliability of the contact system, a large part of the products use a ceramic insulating cover for packaging, and a certain pressure of hydrogen or nitrogen gas is filled in the inside for auxiliary arc extinguishing. When the contact system has a short-circuit moment of intense arc, the gas pressure in the insulating cover will instantaneously and sharply rise, and if the structural strength of the insulating cover is insufficient, the safety performance of the relay will be affected. SUMMARY

[0005] The embodiments of the present disclosure provide a relay to improve the safety performance of the relay.

[0006] The relay provided by the embodiments of the present disclosure includes a contact structure, an insulating cover, and a protection structure. The contact structure includes a plurality of static contacts and a dynamic contact piece. One end of each of the plurality of static contacts and the dynamic contact piece are accommodated in the insulating cover. The two ends of the dynamic contact piece can be in contact with or disconnected from the static contacts.

[0007] The protection structure is located outside the insulating cover. At least part of the protection structure is arranged on the circumferential side wall of the insulating cover. At least part of the protection structure can be elastically deformed and abut against the circumferential side wall of the insulating cover to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

[0008] According to some embodiments of the present disclosure, the protection structure includes an elastic frame structure, which is arranged around the circumferential side wall of the insulating cover. The insulating cover has a height direction. Along the height direction of the insulating cover, the elastic frame structure extends from one end of the insulating cover to the other end. Alternatively, the elastic frame structure includes a plurality of sub-frame bodies, and the plurality of sub-frame bodies are arranged at intervals along the height direction of the insulating cover.

[0009] According to some embodiments of the present disclosure, the elastic frame structure has at least one side edge group, and the at least one side edge group comprises two opposite side edge portions, which are respectively located on two sides of the insulating cover to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

[0010] According to some embodiments of the present disclosure, the number of side edge groups is two, and the two side edge groups are respectively a first side edge group and a second side edge group, the first side edge group comprises two opposite first side edge portions, and the second side edge group comprises two opposite second side edge portions, and the two first side edge portions and the two second side edge portions are capable of elastically deforming to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

[0011] According to some embodiments of the present disclosure, the number of side edge groups is two, and the two side edge groups are respectively a first side edge group and a third side edge group, the first side edge group comprises two opposite first side edge portions, and the third side edge group comprises two opposite third side edge portions, and the two first side edge portions are capable of elastically deforming to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover; and the two third side edge portions are in contact with the circumferential side wall of the insulating cover.

[0012] According to some embodiments of the present disclosure, the relay further comprises a permanent magnet, and the permanent magnet is located between the third side edge portion and the circumferential side wall of the insulating cover, and the third side edge portion is in contact with the circumferential side wall of the insulating cover through the permanent magnet.

[0013] According to some embodiments of the present disclosure, the third side edge portion is provided with a positioning protrusion for positioning the permanent magnet.

[0014] According to some embodiments of the present disclosure, a reinforcing rib is arranged between the first side edge portion and the third side edge portion.

[0015] According to some embodiments of the present disclosure, the material of the elastic frame structure is metal.

[0016] According to some embodiments of the present disclosure, the elastic frame structure is an integrally formed structure, or the elastic frame structure comprises a bendable plate structure having two end portions fixedly connected together to form the elastic frame structure.

[0017] According to some embodiments of the present disclosure, the number of protective structures is multiple, and the multiple protective structures are sequentially arranged on the circumferential side wall of the insulating cover.

[0018] According to some embodiments of the present disclosure, the relay further comprises a housing, and the insulating cover and the protective structure are both mounted inside the housing.

[0019] According to some embodiments of the present disclosure, the relay further comprises a yoke plate and a frame plate; the insulating cover is made of ceramic, the yoke plate is connected to the insulating cover through the frame plate; and the protective structure is located on the yoke plate, or the protective structure is located on the frame plate.

[0020] The inventor has found through long-term observation, testing and research that the main reason for the insufficient structural strength of the insulating cover in the relay in the prior art is that, when the product space is limited and the size, material and forming process of the insulating cover are determined, the strength of the insulating cover, especially the insulating cover made of ceramic, can only be improved to a certain extent. In the case of increasing requirements of users for short-circuit current, the cavity of the insulating cover cannot meet the requirements.

[0021] Based on this, one embodiment of the above-mentioned application has at least the following advantages or beneficial effects:

[0022] (1) The relay provided by the embodiments of the present disclosure has the following advantages: the one end of the plurality of static contacts and the dynamic contact plate are accommodated in the insulating cover, the protective structure is located outside the insulating cover, at least part of the protective structure can elastically deform and abut against the circumferential side wall of the insulating cover, so as to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover, the pre-pressure can offset a part of the impact force outward, which is conducive to improving the safety performance, and at the same time limits the outward expansion of the insulating cover, effectively protects the insulating cover, especially the relatively weak circumferential side wall of the insulating cover, enhances the structural strength of the insulating cover, and improves the safety performance.

[0023] (2) The relay provided by the embodiments of the present disclosure has the following advantages: the protective structure comprises an elastic frame structure, and the elastic frame structure is arranged around the circumferential side wall of the insulating cover; the elastic frame structure can be an integrally formed structure, which has a protective space closed in the circumferential direction, and the insulating cover is located in the protective space; when a large pressure borne by the insulating cover is transmitted to the protective structure, the integrally formed elastic frame structure can apply a more uniform and stable pre-pressure to the inner cavity of the insulating cover from all around, effectively protecting the insulating cover and improving the safety performance.

[0024] (3) The relay provided by the embodiments of the present disclosure has the following advantages: the elastic frame structure comprises a plurality of sub-frames, and the plurality of sub-frames are arranged at intervals in the height direction of the insulating cover. In this way, the amount of material of the elastic frame structure can be reduced, thereby reducing the overall weight of the relay and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 shows an exploded view of the relay provided by the embodiments of the present disclosure;

[0026] Fig. 2 shows a schematic diagram of an elastic frame structure in the embodiment of the present disclosure;

[0027] Fig. 3 shows another schematic diagram of a relay provided in the embodiment of the present disclosure;

[0028] Fig. 4 shows a front view of the relay shown in Fig. 3;

[0029] Fig. 5 shows a sectional view along line A-A of Fig. 4;

[0030] Fig. 6 shows a third schematic diagram of a relay provided in the embodiment of the present disclosure;

[0031] Fig. 7 shows another schematic diagram of an elastic frame structure in the embodiment of the present disclosure;

[0032] Fig. 8 shows a schematic diagram of the structure of the elastic frame structure shown in Fig. 7 cooperating with a permanent magnet;

[0033] Fig. 9 shows a sectional view of a relay provided in the embodiment of the present disclosure (the protection structure is not shown);

[0034] Fig. 10 shows another schematic diagram of a protection structure in the embodiment of the present disclosure.

[0035] The reference signs are explained as follows: 10 - insulating cover; 11 - first side wall; 12 - second side wall; 13 - top plate; 20 - static contact; 31 - first sub-housing; 32 - second sub-housing; 40 - yoke plate; 50 - frame piece; 60 - coil holder; 70 - movable contact piece; 100 - elastic frame structure; 101 - first side edge part; 102 - second side edge part; 103 - sub-frame body; 104 - third side edge part; 105 - reinforcing rib; 110 - top protection part; 210 - permanent magnet; 211 - positioning protrusion part. DETAILED DESCRIPTION

[0036] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus a detailed description of the same will not be repeated.

[0037] Referring to FIGS. 1-10, the present embodiment provides a relay, which includes a contact structure, an insulating cover 10, and a protective structure. The contact structure includes a plurality of static contacts 20 and a moving contact 70. One end of the plurality of static contacts 20 and the moving contact 70 are accommodated in the insulating cover 10. The two ends of the moving contact 70 can be in contact with or disconnected from the static contacts. The protective structure is located outside the insulating cover. At least part of the protective structure is arranged on the circumferential side wall of the insulating cover 10. At least part of the protective structure can be elastically deformed and abut against the circumferential side wall of the insulating cover 10 to apply a pre-pressing force to the insulating cover towards the inner cavity of the insulating cover 10.

[0038] The relay provided by the present embodiment can apply a pre-pressing force to the insulating cover towards the inner cavity of the insulating cover 10 due to the fact that at least part of the protective structure can be elastically deformed and abut against the circumferential side wall of the insulating cover. The pre-pressing force can offset a part of the outward impact force, which is conducive to improving the safety performance. At the same time, the pre-pressing force can limit the outward expansion of the insulating cover, effectively protect the insulating cover, especially the relatively weak circumferential side wall of the insulating cover, enhance the structural strength of the insulating cover, and improve the safety performance.

[0039] It should be understood that, in order to apply a pre-pressing force to the insulating cover towards the inner cavity of the insulating cover 10, the protective structure in the present embodiment is located outside the insulating cover.

[0040] Exemplarily, the material of the insulating cover 10 in the present embodiment is ceramic. Of course, the material of the insulating cover is not limited to ceramic, for example, it can also be plastic. The shape of the cross section of the insulating cover 10 is generally rectangular, for example, the shape of the cross section of the insulating cover 10 can be a rounded rectangle. The insulating cover 10 has a length direction (indicated by the arrow direction D1 in FIG. 3), a width direction (indicated by the arrow direction D2 in FIG. 3), and a height direction (indicated by the arrow direction D3 in FIG. 3). The insulating cover 10 includes a top plate 13 and a circumferential side wall arranged around the edge of the top plate 13. The circumferential side wall includes two first side walls 11 and two second side walls 12. The two first side walls 11 are oppositely arranged along the width direction of the insulating cover 10. The two second side walls 12 are oppositely arranged along the length direction of the insulating cover 10.

[0041] Exemplarily, the number of static contacts 20 is two. The top plate 13 of the insulating cover 10 is provided with two mounting holes. The two mounting holes are spaced apart along the length direction of the insulating cover 10. One static contact 20 is mounted in each mounting hole. One of the static contacts 20 serves as an inlet terminal for electric current, and the other static contact 20 serves as an outlet terminal for electric current. The one end of the moving contact 70 is in contact with or disconnected from one of the static contacts 20. The other end of the moving contact 70 is in contact with or disconnected from the other static contact 20. Of course, the number of static contacts can also be greater than two. A part of the static contacts are in contact with or disconnected from one end of the moving contact. Another part of the static contacts are in contact with or disconnected from the other end of the moving contact.

[0042] It should be understood that, in the perspective of FIG. 1, the top plate 13 of the insulating cover 10 is located above the circumferential side wall, and in other perspectives, the top plate can also be located below or on one side of the circumferential side wall.

[0043] In this embodiment, FIG. 9 exemplarily shows the movable contact 70, and the movable contact 70 in FIG. 9 is in a disconnected state with the static contact.

[0044] In one embodiment, referring to FIG. 1, the relay further comprises a yoke plate 40 and a frame 50, the yoke plate 40 is connected to one end of the insulating cover 10 away from the top plate 13 through the frame 50. The relay further comprises a coil holder 60, the coil holder 60 is located on the side of the yoke plate 40 away from the protective structure, and a coil is wound on the coil holder 60.

[0045] Exemplarily, the yoke plate 40 is connected to one end of the insulating cover 10 away from the top plate 13 through the frame 50 to enclose a first inner cavity; a metal shell is connected to the side of the yoke plate 40 away from the insulating cover 10 to form a second inner cavity; the yoke plate 40 is provided with a through hole for communicating the first inner cavity and the second inner cavity; the relay further comprises a static core, a movable core and a push rod, the static core is fixedly arranged in the second inner cavity; the movable core is located in the second inner cavity, the movable contact is located in the first inner cavity, the push rod is arranged through the through hole, one end of the push rod is connected with the movable core, and the other end of the push rod is connected with the movable contact; the movable core can be attracted to or separated from the static core to make the movable contact on the movable contact and the static contact on the static contact contact or disconnect.

[0046] In one embodiment, the protective structure comprises an elastic frame structure 100, and the elastic frame structure 100 is arranged around the circumferential side wall of the insulating cover 10.

[0047] It should be noted that, referring to FIG. 10, the protective structure can further comprise a top protection part 110, and the top protection part 110 is arranged on the top plate of the insulating cover, and the top protection part 110 can be integrally formed with the elastic frame structure 100.

[0048] In the assembly process of the relay, the elastic frame structure 100 is elastically deformed and in contact with part of the circumferential side wall of the insulating cover 10, thereby applying a pre-pressure to the insulating cover 10 towards the inner cavity of the insulating cover 10, the pre-pressure can offset a part of the outward impact force, which is conducive to improving the safety performance and limiting the outward expansion of the insulating cover 10.

[0049] In one embodiment, the elastic frame structure has at least one side edge group, and the at least one side edge group comprises two opposite side edge parts, and the two side edge parts are respectively located on two sides of the insulating cover to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

[0050] In some embodiments, the number of side groups is two, and the two side groups are a first side group and a second side group, the first side group includes two opposite first side portions 101, and the second side group includes two opposite second side portions 102, and the two first side portions 101 and the two second side portions 102 are elastically deformed to apply a pre-pressure to the inner cavity of the insulating cover.

[0051] For example, referring to FIG. 1, the two first side portions 101 are arranged outside the first side wall 11 to apply a pre-pressure to the first side wall 11 towards the inner cavity of the insulating cover 10. The two second side portions 102 are arranged outside the second side wall 12 to apply a pre-pressure to the second side wall 12 towards the inner cavity of the insulating cover 10.

[0052] In some embodiments, referring to FIG. 2, the elastic frame structure 100 extends from one end of the insulating cover 10 to the other end along the height direction of the insulating cover 10. In this way, the contact area between the elastic frame structure 100 and the circumferential side wall of the insulating cover 10 can be increased, so that the insulating cover 10 can be more effectively protected, and the safety performance can be further improved. It should be understood that the elastic frame structure 100 and the circumferential side wall of the insulating cover 10 are indirectly in contact.

[0053] In this embodiment, the height direction of the elastic frame structure 100 is consistent with the height direction of the insulating cover 10, and the height of the elastic frame structure 100 is not greater than the height of the insulating cover 10, so that the size of the relay in the height direction will not be increased. For example, the height of the elastic frame structure 100 is substantially equal to the height of the insulating cover 10.

[0054] For example, referring to FIG. 5, the middle position of the first side portion 101 is elastically deformed towards the inner cavity of the insulating cover, so that the middle position of the first side portion 101 abuts against the first side wall 11 of the insulating cover 10, and a gap is provided between the two ends of the first side portion 101 and the first side wall 11.

[0055] Correspondingly, the middle position of the second side portion 102 is elastically deformed towards the inner cavity of the insulating cover 10, so that the middle position of the second side portion 102 abuts against the second side wall 12 of the insulating cover 10, and a gap is provided between the two ends of the second side portion 102 and the second side wall 12 along the length direction of the insulating cover 10. In the figure, the arrow direction represents the direction of the pre-pressure.

[0056] Exemplarily, as shown in FIG. 1, the elastic frame structure 100 can be a one-piece structure having a circumferentially closed protection space, and the insulating cover 10 is located in the protection space. When a large pressure borne by the insulating cover 10 is transmitted to the protection structure, the one-piece elastic frame structure 100 can apply more uniform and stable pre-pressure to the inner cavity of the insulating cover 10 from all directions, effectively protect the insulating cover 10, and improve the safety performance.

[0057] Of course, as shown in FIG. 2, the elastic frame structure 100 can also be formed by bending a plate-shaped structure. Specifically, the two ends of the plate-shaped structure can be bent to form folded edges, and the folded edges of the two ends are hooked together to form the elastic frame structure 100. In addition, the folded edges can be welded to further increase the structural strength.

[0058] In other embodiments, as shown in FIGS. 3 and 6, the elastic frame structure 100 includes a plurality of sub-frame bodies 103, and the plurality of sub-frame bodies 103 are arranged at intervals along the height direction of the insulating cover 10. In this way, the amount of material of the elastic frame structure 100 can be reduced, thereby reducing the overall weight of the relay and reducing the production cost. In addition, the sub-frame bodies have smaller volume and are easier to form, and the size control is more accurate.

[0059] Exemplarily, as shown in FIG. 3, the sub-frame body 103 can be made of a metal strip, and as shown in FIG. 6, the sub-frame body 103 can also be made of an elastic metal wire. The sub-frame body 103 can be a one-piece structure or a frame structure formed by fixedly connecting the first end and the second end. For example, as shown in FIGS. 3 to 5, the two ends of the metal strip are bent to form a folded edge, and the folded edges of the two ends are hooked together to form the sub-frame body 103. For another example, as shown in FIG. 6, the two ends of the elastic metal wire are bent to form a hook-shaped structure, and the hook-shaped structures of the two ends are hooked together to form the sub-frame body 103.

[0060] The spacing between the plurality of sub-frame bodies 103 can be selected according to actual production and processing needs. The plurality of sub-frame bodies 103 can be made of elastic metal wires, or can be made of metal strips, or a part of the sub-frame bodies 103 can be made of elastic metal wires, and the other part of the sub-frame bodies 103 can be made of metal strips.

[0061] In this embodiment, the material of the elastic frame structure is metal.

[0062] In other embodiments, the material of the elastic frame structure can also be non-metal, such as plastic that can be elastically deformed.

[0063] It should be noted that the number of the elastic frame structure 100 can be one or multiple, and the multiple elastic frame structures 100 are sequentially sleeved, that is, the multiple elastic frame structures 100 are arranged along the direction from the inner cavity of the insulating cover 10 to the outside.

[0064] In some embodiments, referring to FIG. 7, the number of side groups is two, and the two side groups are a first side group and a third side group. The first side group includes two opposite first side portions 101, and the third side group includes two opposite third side portions 104. The two first side portions 101 are elastically deformable to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover. The two third side portions 104 are in contact with the insulating cover. The third side portion 104 can be a rigid structure.

[0065] The two first side portions 101 are arranged outside the first side wall 11 to apply a pre-pressure to the first side wall 11 towards the inner cavity of the insulating cover 10. Meanwhile, the two third side portions 104 are arranged outside the second side wall 12 to enhance the structural strength of the second side wall 12, thereby enhancing the overall safety performance.

[0066] For example, the third side portion 104 is integrally formed with the first side portion 101. Referring to FIG. 8, a corner is formed between the first side portion 101 and the third side portion 104, and a reinforcing rib 105 is arranged at the corner to increase the strength of the elastic frame structure 100. For example, the reinforcing rib 105 is formed by inward stamping to increase the structural strength of the corner.

[0067] The third side portion 104 is made of a magnetic conductive material. Referring to FIG. 8, the relay further includes a permanent magnet 210 located between the third side portion 104 and the circumferential side wall of the insulating cover 10. The two third side portions 104 are in contact with the second side wall of the insulating cover through the permanent magnet 210.

[0068] For example, the number of permanent magnets 210 is two, and the two permanent magnets 310 are arranged opposite to each other on both sides of the insulating cover 10 along the length direction of the insulating cover 10 to form an arc blowing magnetic field to achieve an arc extinguishing function. The two permanent magnets 210 are respectively located between the third side portion 104 and the second side wall 12 of the insulating cover 10.

[0069] In one embodiment, the two third side portions 104 are each provided with a positioning protrusion 211 for positioning the permanent magnet 210.

[0070] The positioning protrusion 211 can be formed by stamping the elastic frame structure.

[0071] In one embodiment, the relay further includes a shell, and the insulating cover and the protection structure are both arranged inside the shell. At this time, the shell can further play a protection role.

[0072] Exemplarily, referring to FIG. 1, the shell includes a first sub-shell 31 and a second sub-shell 32, which are fixedly connected to encapsulate the insulating cover 10 and the protection structure in the shell.

[0073] Finally, it should be noted that the various embodiments provided by the present disclosure can be combined with each other as long as there is no contradiction, and hereinafter will not be repeated.

[0074] In the embodiments of the present application, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing", "contacting" and the like should be interpreted broadly, for example, "connecting" can be fixedly connected, or can be detachably connected, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium; "contacting" can be direct contact or indirect contact. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0075] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the embodiments of the present application.

[0076] In the description of the present specification, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like described mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A relay characterized by comprising: The contact structure includes a plurality of static contacts and a dynamic contact, one end of the plurality of static contacts and the dynamic contact are accommodated in the insulating cover, and two ends of the dynamic contact can be in contact with or disconnected from the static contacts. The protective structure is located outside the insulating cover, at least part of the protective structure is arranged on the circumferential side wall of the insulating cover, at least part of the protective structure can be elastically deformed and abuts against the circumferential side wall of the insulating cover to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

2. The relay according to claim 1, characterized in that The protective structure includes an elastic frame structure, the elastic frame structure is arranged around the circumferential side wall of the insulating cover; the insulating cover has a height direction, along the height direction of the insulating cover, the elastic frame structure extends from one end of the insulating cover to the other end; or the elastic frame structure includes a plurality of sub-frames, and the plurality of sub-frames are arranged at intervals along the height direction of the insulating cover.

3. The relay according to claim 2, characterized in that The elastic frame structure has at least one side group, at least one side group includes two opposite side parts, and the two side parts are located on two sides of the insulating cover to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

4. The relay according to claim 3, characterized in that The number of side groups is two, and the two side groups are a first side group and a second side group, respectively, the first side group includes two opposite first side parts, the second side group includes two opposite second side parts, and the two first side parts and the two second side parts can be elastically deformed to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover.

5. The relay of claim 3, wherein The number of side groups is two, and the two side groups are a first side group and a third side group, respectively, the first side group includes two opposite first side parts, the third side group includes two opposite third side parts, and the two first side parts can be elastically deformed to apply a pre-pressure to the insulating cover towards the inner cavity of the insulating cover; and the two third side parts are in contact with the circumferential side wall of the insulating cover.

6. The relay of claim 5, wherein A permanent magnet is further included, the permanent magnet is located between the third side part and the circumferential side wall of the insulating cover, and the third side part is in contact with the circumferential side wall of the insulating cover through the permanent magnet.

7. The relay according to claim 6, characterized in that The third side part is provided with a positioning protrusion for positioning the permanent magnet.

8. The relay of claim 5, wherein, A reinforcing rib is arranged between the first side part and the third side part.

9. The relay according to any one of claims 2 to 8, characterized in that The material of the elastic frame structure is metal.

10. The relay according to any one of claims 2 to 8, characterized in that The elastic frame structure is an integral molding structure, or the elastic frame structure includes a bendable plate structure, the bendable plate structure has two end parts, and the two end parts are fixedly connected together to form the elastic frame structure.

11. The relay according to any one of claims 1 to 8, characterized in that The number of protective structures is multiple, and the multiple protective structures are arranged in sequence on the circumferential side wall of the insulating cover.

12. The relay according to any one of claims 1 to 8, characterized in that A shell is further included, and the insulating cover and the protective structure are mounted inside the shell.

13. The relay according to any one of claims 1 to 8, characterized in that The yoke plate and the frame are further included; the material of the insulating cover is ceramic; the yoke plate is connected to the insulating cover through the frame; the protective structure is located on the yoke plate, or the protective structure is located on the frame.

Images