Relay

Abstract

The utility model discloses a relay. The relay comprises a pair of static contacts, a supporting cover and a heat insulation piece. The support cover supports the static contact; the heat insulation piece is arranged between the static contact and the supporting cover; wherein the static contact is not in contact with the supporting cover. According to the relay, the heat insulation piece is arranged between the static contact and the supporting cover, the static contact is not in contact with the supporting cover, and the situation that heat generated by electrification of the static contact is conducted to the supporting cover through contact, and consequently deformation of the supporting cover is caused can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0003] A high-voltage DC relay is a type of relay that primarily consists of an electromagnetic coil, a stationary contact, and a moving contact piece. These two pieces form the relay's moving / static contact portion. Controlling the on / off power of the electromagnetic coil enables the static and moving contacts to make contact and separate, thereby closing and opening the relay contacts. The stationary contact of existing high-voltage DC relays is directly connected to the support cover. When energized, the stationary contact generates heat, causing the support cover to thermally deform. This affects the bond between the support cover and the glue, and can easily cause the glue to age, reducing the relay's airtightness. Utility Model Content

[0004] The main purpose of the present application is to provide a relay that reduces thermal deformation of a support cover and has less influence on glue from heat generated when a static contact is energized.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] A relay according to an embodiment of the present application includes a pair of stationary contacts, a support cover, and a thermal insulation member. The support cover supports the stationary contacts. The thermal insulation member is disposed between the stationary contacts and the support cover. The stationary contacts and the support cover do not contact each other.

[0007] According to some embodiments of the present application, the thermal conductivity of the thermal insulation element is smaller than the thermal conductivity of the static contact.

[0008] According to some embodiments of the present application, the thermal insulation element includes a first structure, a second structure, and a bridge structure, and the bridge structure connects the first structure and the second structure.

[0009] According to some embodiments of the present application, the first structure includes a first hole, a first annular portion and a second annular portion, the second annular portion is stacked and connected to the first annular portion, and the first hole passes through the first annular portion and the second annular portion; the second annular portion contacts and supports the static contact, and the first annular portion contacts and supports the support cover.

[0010] According to some embodiments of the present application, the first structure also includes a third annular portion, which is stacked and connected to a side of the first annular portion away from the second annular portion, and the first hole passes through the first annular portion, the second annular portion and the third annular portion, and the third annular portion limits the movement of the thermal insulation component along the diameter direction of the first hole.

[0011] According to some embodiments of the present application, the thermal conductivity of the second annular portion is smaller than the thermal conductivity of the first annular portion.

[0012] According to some embodiments of the present application, the structure of the second structure is the same as that of the first structure.

[0013] According to some embodiments of the present application, the bridge structure includes a first sub-bridge, which connects a first annular portion of the first structure and a portion of the second structure that is the same as the first annular portion.

[0014] According to some embodiments of the present application, the bridge structure further includes a second sub-bridge, which is stacked and connected to the first sub-bridge, and the second sub-bridge connects the second annular portion of the first structure and the same portion as the second annular portion in the second structure.

[0015] According to some embodiments of the present application, the thermal insulation component is made of ceramic.

[0016] According to some embodiments of the present application, a surface of the thermal insulation member that contacts the static contact is provided with a brazing layer, and the thermal insulation member and the static contact are welded into a whole through the brazing layer.

[0017] According to some embodiments of the present application, the thermal insulation component is an integrated structure.

[0018] According to some embodiments of the present application, the thermal insulation component is a split structure.

[0019] One embodiment of the above application has at least the following advantages or beneficial effects:

[0020] In the relay of the present application, a heat insulator is provided between the stationary contact and the support cover. The heat insulator completely separates the stationary contact and the support cover, preventing contact between the stationary contact and the support cover. This reduces deformation of the support cover caused by heat generated by the stationary contact when energized, thereby minimizing the effect of heat on the glue and ensuring the airtightness of the relay.

[0021] Furthermore, the thermal conductivity of the thermal insulation of the relay in the embodiment of the present application is smaller than that of the static contact, which slows down the conduction of heat generated by the static contact due to power-on as much as possible, reduces the deformation of the support cover, reduces the reduction in the bonding performance of the glue, and reduces the reduction in the air tightness of the relay.

[0022] Furthermore, the thermal insulation member of the relay of the present embodiment includes a first structure, a second structure, and a bridge structure, the bridge structure connecting the first and second structures. The thermal insulation member has a simple structure, completely separating the support cover and the stationary contact, and distributing heat transferred from the stationary contact to the thermal insulation member within the thermal insulation member, further reducing the impact on the support cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial structural diagram of an embodiment of the relay of the present application.

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the dynamic / static contact part of the relay.

[0025] Figure 3 yes Figure 2 AA cross-sectional structural diagram.

[0026] Figure 4 yes Figure 1 Schematic diagram of the structure of the dynamic / static contact part and coil part of the relay.

[0027] Figure 5 yes Figure 1 Schematic diagram of the structure of the static contact and thermal insulation of the relay.

[0028] Figure 6 yes Figure 1 Schematic diagram of the structure of the thermal insulation part of the relay.

[0029] Figure 7 yes Figure 1 A schematic structural diagram of another embodiment of a thermal insulation member of a relay.

[0030] Figure 8 yes Figure 1 A schematic cross-sectional structural diagram of an embodiment of a relay along a plane connecting the center lines of two static contacts.

[0031] Figure 9 It is a schematic diagram of the three-dimensional structure of another embodiment of the relay of the present application.

[0032] Figure 10 yes Figure 9 BB-axis cross-sectional structural diagram of the installed upper outer shell.

[0033] The description of the accompanying drawings is as follows:

[0034] 1- Relay.

[0035] 10-Magnetic conductor.

[0036] 11- Electromagnetic coil.

[0037] 12-Iron core push assembly.

[0038] 13-Coil pin.

[0039] 14-Magnetic cylinder.

[0040] 20-Metal cup.

[0041] 21-Moving contact piece.

[0042] 22-static contact.

[0043] 23-Auxiliary lead-out plate. 24-Groove.

[0044] 30-Baffle.

[0045] 40-Yoke iron plate.

[0046] 50-Metal cylinder.

[0047] 60-Support cover.

[0048] 70-Thermal insulation.

[0049] 71-First structure.

[0050] 72-Second structure.

[0051] 73-Bridge structure.

[0052] 80-Glue.

[0053] 90-Brazing layer.

[0054] 101-Bottom wall.

[0055] 102-side wall.

[0056] 121-moving iron core.

[0057] 122-static iron core.

[0058] 123-spring.

[0059] 124-Putter.

[0060] 131-electrical wires.

[0061] 132-Connecting assembly. 201-Cup wall.

[0062] 202-Cup bottom.

[0063] 500-housing cover.

[0064] 501-Outer shell.

[0065] 601-Through hole.

[0066] 710-First hole.

[0067] 711-First annular portion. 712-Second annular portion.

[0068] 713-the third annular portion.

[0069] 720-Second hole.

[0070] 721-Fourth annular portion.

[0071] 722-Fifth annular portion.

[0072] 723-sixth annular portion.

[0073] 731-First Sub-Bridge.

[0074] 732-Second Sub-Bridge. Specific embodiments

[0075] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0076] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to the process, method, product, or apparatus.

[0077] Relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in a figure is turned over, the element described as being "lower" or "bottom" of other elements will be oriented "upper" or "top" of the other elements. Thus, the exemplary term "lower" can include both "lower" and "top" orientations, and the term "bottom" can include both "bottom" and "top" orientations, depending on the particular orientation of the figure. Similarly, if the device in a figure is turned over, the element described as being "lower" or "bottom" of other elements will be oriented as being "upper" or "top" of the other elements. Thus, the exemplary terms "bottom" or "below" can include both "upper" and "lower" orientations.

[0078] Figures 1 to 6An embodiment of the relay 1 of the present application is shown, wherein the relay 1 includes a pair of stationary contacts 22, a support cover 60, and a thermal insulation member 70. The support cover 60 supports the stationary contacts 22. The thermal insulation member 70 is disposed between the stationary contacts 22 and the support cover 60. The stationary contacts 22 and the support cover 60 do not contact each other.

[0079] The relay 1 of the present application adopts a heat insulating member 70 disposed between the static contact 22 and the support cover 60, and the heat insulating member 70 completely separates the static contact 22 and the support cover 60, so that the static contact 22 and the support cover 60 do not contact each other, thereby reducing the deformation of the support cover 60 caused by the heat generated by the static contact 22 when it is energized. Figure 8 ) to ensure the airtightness of relay 1.

[0080] In this embodiment, see Figure 2 and Figure 3 ,in Figure 3 Shown Figure 2 In the cross-sectional structure of FIG. AA, the metal cup 20 includes a cup wall 201 and a cup bottom 202. A portion of a static contact 22 and a movable contact piece 21 are located within the interior of the metal cup 20. The movable contact piece 21 is connected to the core pusher assembly 12. A portion of the core pusher assembly 12 is located within a metal cylinder 50, which is fixed to the cup bottom 202 of the metal cup 20. A support cover 60 is located within the cup wall 201 of the metal cup 20. The support cover 60 supports a thermal insulator 70, which in turn supports the static contact 22.

[0081] In this embodiment, the thermal conductivity of the thermal insulation member 70 is lower than that of the static contact 22, which can reduce the impact of heat generated by the static contact on the support cover and reduce deformation of the support cover, thereby improving the stability and reliability of the performance of the relay 1. The thermal insulation member 70 can be made of materials such as ceramics.

[0082] In this embodiment, see Figure 4 The relay of the present application also includes a magnetizer 10, which is arranged below the metal cup 20, wherein below means that the magnetizer 10 is located below the metal cup 20 relative to the metal cup 20, and downward movement means moving from the metal cup 20 to the direction of the magnetizer 10. Similarly, above means that the metal cup 20 is located above the magnetizer 10 relative to the magnetizer 10, and upward movement means moving from the magnetizer 10 to the direction of the metal cup 20. An electromagnetic coil 11 is provided in the internal space of the magnetizer 10, and a metal cylinder 50 is provided in the space surrounded by the electromagnetic coil 11. The electromagnetic coil 11 is provided with a coil pin 13, and the coil pin 13 extends from the magnetizer 10 in the direction of the metal cup 20. The metal cup 20 avoids the coil pin 13. A groove is provided on the support cover 60, and an auxiliary lead-out piece 23 is provided in the groove.

[0083] In this embodiment, if Figure 3 and Figure 5 As shown, the thermal insulation member 70 includes a first structure 71, a second structure 72, and a bridge structure 73. The bridge structure 73 connects the first structure 71 and the second structure 72. The first structure 71 corresponds to one of the static contacts 22, and the second structure 72 corresponds to the other static contact 22. The bridge structure 73 connects the first structure 71 and the second structure 72, which uses less material and is low in cost. It also coordinates with the positional relationship between the static contact 22 and the support cover 60 of the relay 1, reducing deformation of the support cover 60 caused by heat generated by the static contact 22 during power-on.

[0084] In this embodiment, if Figure 3 、 Figure 5 and Figure 6 As shown, the first structure 71 includes a first hole 710, a first annular portion 711 and a second annular portion 712. The second annular portion 712 is stacked and connected to the first annular portion 711. The first hole 710 passes through the first annular portion 711 and the second annular portion 712. The second annular portion 712 contacts and supports the static contact 22, and the first annular portion 711 contacts and supports the support cover 60. The first hole 710 is used to set the static contact 22, and the first annular portion 711 is used to contact the support cover 60. In this embodiment, the outer size of the first annular portion 711 is larger than the outer size of the second annular portion 712. Figure 6 It can be seen that the second annular portion 712 is similar to the upwardly protruding convex ring of the first annular portion 711. Such a structure can further reduce the possibility of deformation of the support cover 60 caused by the heat generated by the static contact 22 when it is energized and transferred to the support cover 60.

[0085] In this embodiment, if Figure 3 、 Figure 5 and Figure 6 As shown, the first structure 71 further includes a third annular portion 713, which is laminated and connected to a side of the first annular portion 711 away from the second annular portion 712. The first hole 710 passes through the first annular portion 711, the second annular portion 712, and the third annular portion 713. The third annular portion 713 restricts movement of the thermal insulation member 70 along the diameter of the first hole 710. The support cover 60 includes a through hole 601, a portion of the static contact 22 is disposed within the through hole 601, and the third annular portion 713 is disposed within the through hole 601 of the support cover 60. The provision of the third annular portion 713 restricts movement of the thermal insulation member 70 along the diameter of the first hole 710, thereby further ensuring that the second annular portion 712 contacts and supports the static contact 22, while the first annular portion 711 contacts and supports the support cover 60. This isolates the static contact 22 from the support cover 60, reduces heat transfer between them, and prevents deformation of the support cover 60.

[0086] In this embodiment, the thermal conductivity of the second annular portion 712 is lower than that of the first annular portion 711. Selecting a material with a lower thermal conductivity to form the second annular portion 712 allows less heat generated by the static contact 22 to be transferred to the first annular portion 711, and thus to the support cover 60. In other embodiments, the second annular portion 712 and the first annular portion 711 may be made of the same material, thereby having equal thermal conductivity.

[0087] In this embodiment, the structure of the second structure 72 is the same as that of the first structure 71. Figure 3 、 Figure 5 and Figure 6 The second structure 72 includes a second hole 720, a fourth annular portion 721 and a fifth annular portion 722. The fifth annular portion 722 is stacked and connected to the fourth annular portion 721. The second hole 720 passes through the fourth annular portion 721 and the fifth annular portion 722. The fifth annular portion 722 contacts and supports the static contact 22, and the fourth annular portion 721 contacts and supports the support cover 60. The second hole 720 is used to set the static contact 22, and the fourth annular portion 721 is used to contact the support cover 60. In this embodiment, the outer size of the fourth annular portion 721 is larger than the outer size of the fifth annular portion 722. Figure 6 It can be seen that the fifth annular portion 722 is similar to the upwardly protruding convex ring of the fourth annular portion 721. Such a structure can further reduce the possibility of deformation of the support cover 60 caused by the heat generated by the static contact 22 when it is energized and transferred to the support cover 60.

[0088] In this embodiment, if Figure 3 、 Figure 5 and Figure 6 As shown, the second structure 72 further includes a sixth annular portion 723, which is stacked and connected to the fourth annular portion 721 and spaced apart from the fifth annular portion 722. The second hole 720 passes through the fourth annular portion 721, the fifth annular portion 722, and the sixth annular portion 723. The support cover 60 includes a through-hole 601, a portion of the static contact 22 is disposed within the through-hole 601, and the sixth annular portion 723 is disposed within the through-hole 601 of the support cover 60. The sixth annular portion 723 restricts movement of the thermal insulation member 70 along the diameter of the second hole 720. The provision of the sixth annular portion 723 restricts movement of the thermal insulation member 70 along the diameter of the second hole 720, thereby further ensuring that the fifth annular portion 722 contacts and supports the static contact 22, while the fourth annular portion 721 contacts and supports the support cover 60. This isolates the static contact 22 from the support cover 60, reduces heat transfer between them, and prevents deformation of the support cover 60.

[0089] In this embodiment, the thermal conductivity of the fifth annular portion 722 is lower than that of the fourth annular portion 721. Selecting a material with a lower thermal conductivity to form the fifth annular portion 722 allows less heat generated by the static contact 22 to be transferred to the fourth annular portion 721, and thus to the support cover 60. In other embodiments, the fifth annular portion 722 and the fourth annular portion 721 may be made of the same material, thereby having equal thermal conductivity.

[0090] In this embodiment, the bridge structure 73 includes a first sub-bridge 731, which connects the first annular portion 711 of the first structure 71 and the portion of the second structure 72 that is identical to the first annular portion 711. In other words, the first sub-bridge 731 connects the first annular portion 711 of the first structure 71 and the fourth annular portion 721 of the second structure 72. Connecting the first annular portion 711 of the first structure 71 and the fourth annular portion 721 of the second structure 72 using the first sub-bridge 731 ensures the positional relationship between the first annular portion 711 and the fourth annular portion 721, thereby ensuring that neither static contact 22 can contact the support cover 60.

[0091] In this embodiment, the bridge structure 73 further includes a second sub-bridge 732, which is stacked and connected to the first sub-bridge 731. The second sub-bridge 732 connects the second annular portion 712 of the first structure 71 with the portion of the second structure 72 that is identical to the second annular portion 712. In other words, the second sub-bridge 732 connects the second annular portion 712 of the first structure 71 with the fifth annular portion 722 of the second structure 72. This enhances the strength of the thermal insulation element 70 and conserves insulation material.

[0092] In this embodiment, if Figure 3 As shown, a brazing layer 90 is provided on the surface of the heat insulating member 70 that contacts the static contact 22 , and the static contact 22 can be welded to the heat insulating member 70 into a whole through the brazing layer 90 .

[0093] In this embodiment, the thermal insulation member 70 is an integral structure. In other embodiments, the thermal insulation member 70 is a split structure. In this embodiment, the cup wall 201 and cup bottom 202 of the metal cup 20 are integrally formed. This integral molding process is simple and provides excellent sealing performance. In other embodiments, the cup wall 201 and cup bottom 202 of the metal cup 20 can also be separately molded and then sealed and fixed together. Separate molding facilitates simplified processing.

[0094] In this embodiment, the metal cylinder 50 and the cup bottom 202 of the metal cup 20 are connected by welding, which has good sealing performance.

[0095] In this embodiment, the metal cylinder 50 is made of a non-magnetic material, which reduces its participation in magnetic conduction, affects the magnetic conduction circuit, and thus affects the magnetic conduction efficiency and magnetic attraction. In other embodiments, the metal cylinder 50 can also be made of a magnetic conduction material. In this embodiment, the magnetizer 10 is made of a magnetic metal material or a magnetic alloy material.

[0096] Figure 7 yes Figures 1 to 6 Another embodiment of the thermal insulation member of the relay, the thermal insulation member 70 of the other embodiment is Figures 1 to 6 The heat insulating member 70 of the embodiment has substantially the same basic structure as that of the heat insulating member 70 of the embodiment. Therefore, the heat insulating member 70 of the embodiment will not be described repeatedly. Figures 1 to 6 In addition, Figures 1 to 6 The same reference numerals are used for the same structures as those of the heat insulating member 70 described in the embodiment of FIG. Figures 1 to 6 The difference between the heat insulating member 70 and the embodiment of the present invention is described. The bridge structure 73 of the heat insulating member 70 only includes the first sub-bridge 731. In this embodiment, the third annular portion 713 and the sixth annular portion 723 may exist or not. In fact, in Figures 1 to 6 Examples, and Figure 7 In the embodiment, the second annular portion 712 and the fifth annular portion 722 can also limit the movement of the thermal insulation member 70 along the diameter direction of the first hole 710 or the second hole 720.

[0097] Figure 8 yes Figures 1 to 6The cross-sectional structure of the relay along the plane connecting the center lines of the two static contacts shows that a moving contact piece 21 is provided below the static contact 22 of the relay 1 of the present application. The moving contact piece 21 is connected to the iron core pushing assembly 12. The iron core pushing assembly 12 includes a moving iron core 121, a static iron core 122, a spring 123, a push rod 124 and other structures. The push rod 124 of the iron core pushing assembly 12 is driven by the electromagnetic coil 11. The static iron core 122 and the moving iron core 121 are arranged in a metal cylinder 50. A magnetic cylinder 14 is provided on the periphery of the metal cylinder 50. The electromagnetic coil 11 is provided on the periphery of the magnetic cylinder 14. The push rod 124 is partially provided in the moving iron core 121 and can be driven by the moving iron core 121 to move upward, thereby driving the moving contact piece 21 to move upward and contact the static contact 22. The magnetic cylinder 14, electromagnetic coil 11, and the lower portions of the movable iron core 121, static iron core 122, and push rod 124 of the iron core push assembly 12 are all disposed within the magnetic conductor 10. A spring 123 is disposed between the movable iron core 121 and the static iron core 122. When the movable iron core 121 and the static iron core 122 do not generate mutual attraction, the movable iron core 121 and the static iron core 122 are separated due to the elastic force of the spring 123. The push rod 124 extends upward and connects to the movable contact piece 21. The movable contact piece 21 is disposed within the metal cup 20 and can be pushed by the push rod 124 to contact or separate from the static contact 22, thereby connecting or disconnecting the circuit. An outer shell 501 is disposed around the metal cup 20 and the magnetic conductor 10. A shell cover 500 is disposed at the opening of the outer shell 501, and the static contact 22 rises out of the shell cover 500. The space between the heat insulator 70 and the outer housing 501 is filled with glue 80. The electric wires 131 are wires of an external connector. Figure 8 The heat insulating member 70 of the relay 1 shown may also be Figure 7 Thermal insulation 70 is shown.

[0098] like Figures 9 and 10 Another embodiment of the relay 1 of the present application is shown. The relay 1 of this another embodiment is Figures 1 to 8 Therefore, in the following description of the relay 1 of the other embodiment, the description of the relay 1 is not repeated. Figures 1 to 8 In addition, Figures 1 to 8 The same structures as those of the relay 1 described in the embodiment of FIG. 1 are marked with the same reference numerals. Therefore, in the following description of this embodiment, the relay 1 described in the embodiment of FIG. 1 is mainly Figures 1 to 8 The difference between the relay 1 of the embodiment of the present invention is described. The relay 1 of the other embodiment further includes a baffle 30, which is arranged between the metal cup 20 and the coil pin 11 and protrudes from the cup mouth of the metal cup 20. The arrangement of the baffle 30 can increase the electrical distance between the coil pin 13 and the metal cup 20, and can reduce the glue 80 during the glue filling process (see Figure 8) into the space between the coil pin 13 and the electromagnetic coil 11. The baffle 30 can be pre-assembled by interference fit and then fixed to the metal cup 20 by glue filling.

[0099] In this embodiment, the magnetizer 10 has a bottom wall 101 and two opposing side walls 102. The electromagnetic coil 11 is disposed within the space enclosed by the bottom wall 101 and the side walls 102. The core pusher assembly 12 is disposed within the space enclosed by the electromagnetic coil 11. The electromagnetic coil 11 is provided with coil pins 13 extending away from the bottom wall 101. The metal cup 20 is disposed at one end of the two side walls 102 of the magnetizer 10, away from the bottom wall 101.

[0100] In this embodiment, the auxiliary lead-out piece 23 and the coil pin 13 are both connected to the connecting component 132 .

[0101] In some other embodiments, the baffle may be partially located between the metal cup 20 and the coil pin 13 and partially located on the support cover 60, such as in an "L" shape.

[0102] Figure 10 Shown Figure 9 After the upper housing is installed, a cross-section along the BB axis is shown. The baffle 30 is positioned between the cup wall 201 of the metal cup 20 and the coil pin 13. The baffle 30 is made of an insulating material, such as plastic, ceramic, glass, or other insulating materials. This insulating material increases the electrical distance between the metal cup 20 and the coil pin 13.

[0103] In summary, the relay proposed in the present application includes a pair of static contacts, a support cover and a thermal insulation member. The support cover supports the static contact. The thermal insulation member is arranged between the static contact and the support cover. The static contact and the support cover do not contact. The relay of the present application adopts a thermal insulation member arranged between the static contact and the support cover, and the thermal insulation member completely separates the static contact and the support cover, so that the static contact and the support cover do not contact, thereby reducing the deformation of the support cover caused by the heat generated by the static contact due to power-on, reducing the influence of heat on the glue, and ensuring the airtightness of the relay.

[0104] It is understandable that the various embodiments / embodiments provided in this application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0105] In the exemplary embodiments described above, the relays proposed in this application are described using an example of an electronically controlled device. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments to apply the designs of this application to other types of devices, and such modifications remain within the scope of the principles of the relays proposed in this application.

[0106] It should be noted that the relays shown in the drawings and described in this specification are only a few examples of the many types of relays that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any details or any components of the relays shown in the drawings or described in this specification.

[0107] In the application examples, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the application examples can be understood according to the specific circumstances.

[0108] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the application embodiments.

[0109] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the claimed invention. In this specification, schematic representations 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 any one or more embodiments or examples.

[0110] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A relay, characterized in that: include: A pair of static contacts; A support cover, supporting the static contact; a heat insulating member, disposed between the static contact and the support cover; The static contact and the support cover are not in contact.

2. The relay according to claim 1, wherein: The thermal conductivity of the thermal insulation member is smaller than the thermal conductivity of the static contact.

3. The relay according to claim 1 or 2, characterized in that: The thermal insulation member includes a first structure, a second structure, and a bridge structure connecting the first structure and the second structure.

4. The relay according to claim 3, characterized in that The first structure includes a first hole, a first annular portion and a second annular portion, the second annular portion is stacked and connected to the first annular portion, and the first hole passes through the first annular portion and the second annular portion; the second annular portion contacts and supports the static contact, and the first annular portion contacts and supports the support cover.

5. The relay according to claim 4, characterized in that The first structure also includes a third annular portion, which is stacked and connected to the side of the first annular portion away from the second annular portion. The first hole passes through the first annular portion, the second annular portion and the third annular portion. The third annular portion limits the movement of the thermal insulation component along the diameter direction of the first hole.

6. The relay according to claim 4, characterized in that The thermal conductivity of the second annular portion is smaller than the thermal conductivity of the first annular portion.

7. The relay according to any one of claims 4 to 6, characterized in that: The structure of the second structure is the same as that of the first structure.

8. The relay according to claim 7, characterized in that The bridge structure includes a first sub-bridge connecting a first annular portion of the first structure and a portion of the second structure that is the same as the first annular portion.

9. The relay according to claim 8, characterized in that The bridge structure further includes a second sub-bridge, which is stacked and connected to the first sub-bridge, and connects the second annular portion of the first structure and the same portion as the second annular portion in the second structure.

10. The relay according to any one of claims 1-2, 4-6, 8-9, characterized in that: The thermal insulation component is made of ceramic.

11. The relay according to claim 10, characterized in that A brazing layer is provided on the surface of the heat insulating member contacting the static contact, and the heat insulating member and the static contact are welded into a whole through the brazing layer.

12. The relay according to any one of claims 1-2, 4-6, 8-9 and 11, characterized in that: The thermal insulation component is an integrated structure.

13. The relay according to any one of claims 1-2, 4-6, 8-9 and 11, characterized in that: The thermal insulation component is a split structure.

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