Connection structure and relay

Abstract

The application provides a connecting structure and a relay, and relates to the technical field of relays. The connecting structure is configured to connect a load leading-out end of a relay and an insulating cover. The connecting structure comprises a connecting component. The insulating cover is internally provided with an inner chamber. The insulating cover is further provided with a mounting channel which is in communication with the inner chamber from an outer wall. One end of the connecting component is connected to a part of the load leading-out end which is located outside the insulating cover. The other end of the connecting component penetrates through the mounting channel and is welded to an inner wall of the inner chamber corresponding to the load leading-out end. The one end of the connecting component connected to the load leading-out end is connected to the insulating cover through the connecting component and does not directly contact the insulating cover. Therefore, when the load leading-out end and the external component are welded by using a laser welding mode, the instantaneous high temperature generated can not be directly transmitted to the insulating cover, but the temperature is attenuated through the connecting component.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to connection structures and relays. Background Technology

[0002] A relay is an automated control device. A relay uses a coil to generate a magnetic field, which closes the contacts to control the load. The relay contacts are isolated within a ceramic housing and led out from the load leads that pass through the ceramic housing.

[0003] Currently, some relays connect their load leads to the insulating cover by welding (e.g., brazing). During long-term use, the weld between the load leads and the insulating cover is prone to cracking and other abnormalities, ultimately leading to product damage. Utility Model Content

[0004] Therefore, it is necessary to provide a connection structure and a relay to address the aforementioned technical problems.

[0005] This application provides a connection structure configured to connect a load lead of a relay and an insulating cover. The connection structure includes a connecting component; the insulating cover has an internal cavity and an mounting channel that communicates with the internal cavity from its outer wall; one end of the connecting component is connected to the portion of the load lead located outside the insulating cover, and the other end of the connecting component passes through the mounting channel and is welded to the inner wall of the internal cavity corresponding to the load lead.

[0006] In one embodiment, the connecting member has a first connecting portion, a second connecting portion, and at least one bent portion, wherein at least one of the bent portions is located between the first connecting portion and the second connecting portion, and the connecting member is bent through the bent portion.

[0007] In one embodiment, the load lead-out end is not in direct contact with the insulating cover; the connecting component is welded to the load lead-out end via the first connecting portion, and the connecting component is welded to the inner wall of the inner cavity via the second connecting portion.

[0008] In one embodiment, the first connecting portion is configured as a first end of the connecting member; and / or,

[0009] The second connecting portion is configured as the second end of the connecting member; and / or,

[0010] The first connecting portion is sealed and welded to the load lead-out end; and / or,

[0011] The second connection is sealed and welded to the inner wall of the inner cavity; and / or,

[0012] The connecting component is an annular cylindrical component surrounding the load lead-out end, and the connecting component can deform under force to absorb welding stress.

[0013] In one embodiment, the connecting member has a bend, the connecting member being connected to a first body segment and a second body segment via the bend, the first connecting portion being configured as an end of the first body segment, and the second connecting portion being configured as an end of the second body segment.

[0014] In one embodiment, the first main body segment is configured as a columnar ring, and the curved portion is configured as a ring circumferentially connected to the first main body segment, wherein the orientation of the first connecting portion is the same as the orientation of the second connecting portion.

[0015] In one embodiment, the inner wall of the insulating cover includes a chamber side wall and a chamber top wall, the mounting channel penetrates through the chamber top wall of the insulating cover, and the second connecting portion is welded to the chamber top wall of the insulating cover.

[0016] In one embodiment, the load lead-out terminal includes:

[0017] A lead-out rod, wherein the two ends of the lead-out rod are a first rod end and a second rod end, respectively;

[0018] The welding body has a welding surface and a connecting surface, the first end of the lead-out rod is connected to the connecting surface of the welding body, and the first connecting part of the connecting component is connected to the connecting surface of the welding body;

[0019] The lead-out rod passes through the installation channel, and the welding body is located outside the installation channel.

[0020] In one embodiment, the insulating cover is made of ceramic.

[0021] This application provides a relay, which includes at least the connection structure.

[0022] In the aforementioned connection structure and relay, since the load leads are connected to the insulating cover via connecting components and do not directly contact the insulating cover, the instantaneous high temperature generated when welding the load leads to external components using laser welding is not directly transferred to the insulating cover, but rather attenuated through the connecting components. Furthermore, during use, the load leads and the insulating cover primarily experience phase separation forces. Because the second connecting part is welded to the inner wall of the insulating cover's cavity, and the weld corresponds to the lead, when the load leads and the insulating cover are subjected to phase separation forces, the second connecting part and the insulating cover experience compressive stress. Compared to the tensile stress generated by a normal connection between the connecting components and the insulating cover, the force between the connecting components and the insulating cover changes from tensile stress to compressive stress. This allows the lead and the insulating cover to withstand greater phase separation forces, effectively improving the assembly stability between the connecting components and the insulating cover. Attached Figure Description

[0023] Figure 1 An exploded view of the load lead, insulating cover, and connecting components provided in one embodiment of this application.

[0024] Figure 2 For example Figure 1 The diagram shows the structure of the connecting component.

[0025] Figure 3 This is an assembly cross-sectional view of the load lead, insulating cover, and connecting components provided in one embodiment of this application.

[0026] Figure 4 For example Figure 3 The diagram shows a partially enlarged structural feature.

[0027] Figure 5 For example Figure 3 The cross-sectional view of the load lead-out terminal is shown.

[0028] Icon labels:

[0029] 1000, Load lead-out terminal; 2000, Insulating cover; 3000, Connecting components;

[0030] 1100, Lead-out rod; 1101, First rod end; 1102, Second rod end; 1200, Welding body; 1201, Welding surface; 1202, Connecting surface;

[0031] 2100. Inner chamber; 2110. Inner wall of the chamber; 2111. Side wall of the chamber; 2112. Top wall of the chamber; 2200. Installation channel; 2201. Outer channel opening; 2202. Inner channel opening;

[0032] 3001, First connecting part; 3002, Second connecting part; 3003, Bending part;

[0033] 3100, First main paragraph; 3200, Second main paragraph. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0040] This application provides a relay, which includes at least a load lead-out terminal 1000, an insulating cover 2000 (such as a ceramic cover made of ceramic material), and a connection structure constructed between the two. The contact portion of the relay can be disposed within the insulating cover 2000, and the load lead-out terminal 1000 is the stationary end lead-out terminal of the contact portion.

[0041] Regarding the connection structure between the aforementioned load lead 1000 and the insulating cover 2000 (such as a ceramic cover), please refer to... Figures 1 to 5 As shown, the connection structure provided in this application may include a connecting component 3000, which is an annular component surrounding the load lead-out terminal 1000. This connecting component 3000 is adapted to serve as an indirect connection between the load lead-out terminal 1000 and the insulating cover 2000 (such as a ceramic cover). See also... Figure 2 As shown, the connecting member 3000 has a first connecting portion 3001, a second connecting portion 3002, and a bending portion 3003. The bending portion 3003 can cause a corresponding position or area of ​​the connecting member 3000 to bend, thereby changing the relative positional relationship between two adjacent areas of the bending portion 3003 in the connecting member 3000, such as orientation or relative angle.

[0042] Therefore, those skilled in the art can set the number of bends 3003 in the connecting member 3000 and the degree of bending caused by the bends 3003 in the connecting member 3000 according to actual needs. For example, one or more bends 3003 can be provided in the connecting member 3000, thereby enabling the connecting member 3000 to form various predictable bending shapes based on one or more bends 3003. At the same time, each bend 3003 can cause different positions of the connecting member 3000 to form the same or different degrees of bending, which is not limited here.

[0043] Between the first connecting portion 3001, the second connecting portion 3002, and the bent portion 3003 of the connecting member 3000, at least one bent portion 3003 can be located between the first connecting portion 3001 and the second connecting portion 3002. Therefore, when the connecting member 3000 is bent via the bent portion 3003, the relative positional relationship between the first connecting portion 3001 and the second connecting portion 3002 can be changed. For example, when the connecting member 3000 is bent based on a specific bent portion 3003, the orientation of the second connecting portion 3002 relative to the first connecting portion 3001 can be changed.

[0044] The load lead-out terminal 1000 and the insulating cover 2000 are not in direct contact. Regarding the assembly of the connecting component 3000 between the insulating cover 2000 and the load lead-out terminal 1000, the insulating cover 2000 may have an inner cavity 2100 inside, and the insulating cover 2000 also has an installation channel 2200 that connects to the inner cavity 2100 from the outer wall. One end of the connecting component 3000 is connected to the part of the load lead-out terminal 1000 located outside the insulating cover 2000, and the other end of the connecting component 3000 passes through the installation channel 2200 and is welded to the inner wall 2110 of the inner cavity 2100 corresponding to the inner wall 2110 of the inner cavity 2100.

[0045] The installation channel 2200 can be one, two, or more. Each installation channel 2200 penetrates the side wall of the insulating cover 2000 and connects to the inner cavity 2100. Each installation channel 2200 has an outer channel opening 2201 and an inner channel opening 2202. The inner channel opening 2202 connects to the inner cavity 2100, while the outer channel opening 2201 is located on the outer surface of the insulating cover 2000 and is used to connect to the outside.

[0046] The number of load leads 1000 matches the number of mounting channels 2200. Each load lead 1000 can be inserted into a matching mounting channel 2200 of the insulating cover 2000, and each load lead 1000 is connected to the insulating cover 2000 via a connecting member 3000, but does not directly contact the insulating cover 2000. The connecting member 3000 can be inserted into the mounting channel 2200. The first connecting portion 3001 of the connecting member 3000 is connected to the load lead 1000, and the second connecting portion 3002 of the connecting member 3000 is connected to the insulating cover 2000.

[0047] For example, the connecting component 3000 is connected to the load lead-out end 1000 via a first connecting portion 3001, and the connecting component 3000 is connected to the inner wall 2110 of the inner chamber 2100 via a second connecting portion 3002, thereby allowing the connecting component 3000 to pass through the mounting channel 2200, wherein the second connecting portion 3002 is connected to the inner wall 2110 of the inner chamber 2100 corresponding to the load lead-out end 1000. The first connecting portion 3001 is sealed to the load lead-out end 1000. The second connecting portion 3002 is sealed and welded to the inner wall 2110 of the inner chamber 2100.

[0048] Since the load leads 1000 are connected to the insulating cover 2000 via connecting components 3000 and do not directly contact the insulating cover 2000, the instantaneous high temperature generated when welding the load leads 1000 to external components using laser welding is not directly transferred to the insulating cover 2000, but rather attenuated through the connecting components 3000. Therefore, the connecting components 3000 can be made of a material with a lower thermal conductivity than the load leads 1000. For example, the connecting components 3000 can be made of Kovar alloy, which has good mechanical properties, corrosion resistance, and ease of processing. While providing thermal insulation, its coefficient of thermal expansion is close to that of the ceramic insulating cover 2000, resulting in more consistent deformation after welding and less welding stress, thus reducing the risk of cracking between the load leads 1000 and the insulating cover 2000.

[0049] Regarding the connection between the second connecting portion 3002 and the insulating cover 2000, as can be seen from the above, since there is a bend 3003 between the first connecting portion 3001 and the second connecting portion 3002, when the connecting member 3000 bends through the bend 3003, the relative positional relationship between the first connecting portion 3001 and the second connecting portion 3002 of the connecting member 3000 can be changed. (See also...) Figures 2 to 4 It is understood that, for example, when the connecting member 3000 bends based on a specific bend 3003, the orientation of the second connecting member 3002 relative to the first connecting member 3001 may change.

[0050] At this time, the second connecting portion 3002 of the connecting member 3000 can be disposed in the inner cavity 2100 of the insulating cover 2000. If there is no bend 3003 between the first connecting portion 3001 and the second connecting portion 3002, and the connecting member 3000 does not bend based on the bend 3003, the second connecting portion 3002 of the connecting member 3000 cannot contact the inner wall 2110 of the insulating cover 2000 in the inner cavity 2100 of the insulating cover 2000.

[0051] However, if the connecting part 3000 bends based on a specific bend 3003, causing the orientation of the second connecting part 3002 to change relative to the first connecting part 3001, the orientation of the second connecting part 3002 can change relative to the original state. This change allows the second connecting part 3002, which was originally unable to contact the inner wall 2110 of the cavity, to stress contact with the inner wall 2110 of the insulating cover 2000, that is, the two contact each other in a pressure-stress manner.

[0052] During use, the load lead 1000 and the insulating cover 2000 of the relay are subjected to external forces that tend to separate phases. In conventional technology, the load lead 1000 is directly or indirectly welded to the upper surface of the insulating cover 2000, and the load lead 1000 and the insulating cover 2000 are subjected to tensile stress.

[0053] In the embodiment provided by this utility model, since the second connecting part 3002 is welded to the inner wall 2110 of the cavity of the insulating cover 2000, and the welding position corresponds to the load lead-out end 1000, when the load lead-out end 1000 and the insulating cover 2000 are subjected to an external force with a phase separation tendency, the second connecting part 3002 and the inner wall 2110 of the cavity of the insulating cover 2000 will be squeezed against each other, so that the two bear more compressive stress.

[0054] Compared to the tensile stress generated by the ordinary connection between the connecting component 3000 and the insulating cover 2000, the force between the connecting component 3000 and the insulating cover 2000 is changed from tensile stress to compressive stress. This allows the lead-out end and the insulating cover to withstand a greater external force with a phase separation tendency, which can effectively improve the assembly stability between the connecting component 3000 and the insulating cover 2000.

[0055] The first connecting portion 3001 and the second connecting portion 3002 can be disposed at any position on the connecting member 3000 as needed. For example, the positions of the first connecting portion 3001 and the second connecting portion 3002 can be determined according to the final shape of the connecting member 3000 after bending through the bending portion 3003, thereby facilitating the connection of the first connecting portion 3001 and the second connecting portion 3002 with the load lead-out end 1000 and the insulating cover 2000. In one embodiment, the first connecting portion 3001 is configured as the first end of the connecting member 3000, and the second connecting portion 3002 is configured as the second end of the connecting member 3000.

[0056] Regarding the stress contact between the second connecting portion 3002 and the inner wall 2110 of the insulating cover 2000, the relative positional relationship between the second connecting portion 3002 and the inner wall 2110 can be determined based on the final shape of the connecting component 3000 after bending via the bending portion 3003, thereby determining the specific connection method between the two. In one embodiment, the second connecting portion 3002 can be hooked onto the inner wall 2110 of the insulating cover 2000, for example, the second connecting portion 3002 can stress contact the inner wall 2110 of the insulating cover 2000 along the channel trajectory direction of the mounting channel 2200. Alternatively, the second connecting portion 3002 can also be snapped onto the inner wall 2110 of the insulating cover 2000. Those skilled in the art can design according to actual needs.

[0057] The connecting component 3000 can be configured as an annular cylindrical component surrounding the load lead-out end 1000. When the connecting component 3000 is an annular cylindrical component, the overall structure of the connecting component 3000 can be a cylindrical thin plate structure, that is, a thin plate with an annular shape surrounding the circumferential cylindrical shape. Therefore, the deformability of the connecting component 3000 can be effectively enhanced, and welding stress can be absorbed.

[0058] For example, in such Figure 2 In one embodiment shown, the connecting member 3000 may have a bend 3003, dividing the connecting member 3000 into a connected first main body segment 3100 and a second main body segment 3200 via the bend 3003. A first connecting portion 3001 is configured as the end of the first main body segment 3100, and a second connecting portion 3002 is configured as the end of the second main body segment 3200. The first main body segment 3100 may be configured as a columnar annular member, and the bend 3003 may be configured as an annular member circumferentially connecting the first main body segment 3100. The orientation of the first connecting portion 3001 is the same as that of the second connecting portion 3002.

[0059] As can be seen from the above, based on the thin plate design of the first main body section 3100, the bending part 3003, the second main body section 3200, etc., when the connecting part 3000 is designed as a thin plate structure, especially when the second main body section 3200 is a thin plate structure and connected to the bending part 3003, the second main body section 3200 can have better deformability, absorb welding stress, and enhance the welding of the second main body section 3200 and the insulating cover 2000.

[0060] At this time, the orientation of the first connecting part 3001 and the orientation of the second connecting part 3002 can be kept in the same direction based on the bending design. Therefore, when the first connecting part 3001 is connected to the load lead-out end 1000 and the second connecting part 3002 is in stress contact with the inner wall 2110 of the cavity of the insulating cover 2000, if the load lead-out end 1000 tends to move along the inner channel opening 2202 towards the outer channel opening 2201 due to thermal deformation or other reasons, the force between the connecting part 3000 and the insulating cover 2000 changes from tensile stress to compressive stress compared to the tensile stress generated by the ordinary connection method between the connecting part 3000 and the insulating cover 2000. This allows the lead-out end and the insulating cover to withstand a greater external force with a phase separation tendency, which can effectively improve the assembly stability between the connecting part 3000 and the insulating cover 2000.

[0061] The orientation of the first connecting part 3001 and the orientation of the second connecting part 3002 can be kept in the same direction based on the bending design, so that the direction of the compressive stress generated between the second connecting part 3002 and the inner wall 2110 of the cavity of the insulating cover 2000 can also be along the direction from the inner channel opening 2202 to the outer channel opening 2201, thereby further improving the assembly stability.

[0062] Especially when the inner wall 2110 of the insulating cover 2000 includes the chamber side wall 2111 and the chamber top wall 2112, the inner channel opening 2202 of the mounting channel 2200 is located on the chamber top wall 2112 of the insulating cover 2000, and the second connecting part 3002 is in stress contact with the chamber top wall 2112 of the insulating cover 2000, the direction of the compressive stress can ensure that the orientation of the second connecting part 3002 is directly facing the chamber top wall 2112, further improving the assembly stability.

[0063] In one embodiment, the load lead-out end 1000 may include a lead-out rod 1100 and a welding body 1200. The two ends of the lead-out rod 1100 are a first rod end 1101 and a second rod end 1102, respectively. The welding body 1200 has a welding surface 1201 and a connecting surface 1202. The load lead-out end 1000 can be welded to external components through the welding surface 1201 of the welding body 1200. The first rod end 1101 of the lead-out rod 1100 is connected to the connecting surface 1202 of the welding body 1200, and the first connecting portion 3001 of the connecting component 3000 is connected to the connecting surface 1202 of the welding body 1200. The lead-out rod 1100 passes through the mounting channel 2200, and the welding body 1200 is located outside the mounting channel 2200.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connection structure, characterized in that, The connection structure is configured to connect a load lead (1000) of a relay and an insulating cover (2000). The connection structure includes a connecting component (3000). The insulating cover (2000) has an internal cavity (2100) and an mounting channel (2200) that communicates with the internal cavity (2100) from its outer wall. One end of the connecting component (3000) is connected to the portion of the load lead (1000) located outside the insulating cover (2000), and the other end of the connecting component (3000) passes through the mounting channel (2200) and is welded to the inner wall (2110) of the internal cavity (2100) corresponding to the load lead (1000).

2. The connection structure according to claim 1, characterized in that, The connecting member (3000) has a first connecting portion (3001), a second connecting portion (3002) and at least one bent portion (3003), wherein at least one bent portion (3003) is located between the first connecting portion (3001) and the second connecting portion (3002), and the connecting member (3000) is bent through the bent portion (3003).

3. The connection structure according to claim 2, characterized in that, The load lead-out end (1000) is not in direct contact with the insulating cover (2000); the connecting component (3000) is welded to the load lead-out end (1000) through the first connecting part (3001), and the connecting component (3000) is welded to the inner wall (2110) of the inner cavity (2100) through the second connecting part (3002).

4. The connection structure according to claim 2, characterized in that, The first connecting portion (3001) is configured as the first end of the connecting member (3000); and / or, The second connecting portion (3002) is configured as the second end of the connecting member (3000); and / or, The first connecting portion (3001) is sealed and welded to the load lead-out end (1000); and / or, The second connecting part (3002) is sealed and welded to the inner wall (2110) of the inner cavity (2100); and / or, The connecting component (3000) is an annular cylindrical component surrounding the load lead-out end (1000), and the connecting component (3000) is capable of deformation under force to absorb welding stress.

5. The connection structure according to claim 2, characterized in that, The connecting member (3000) has a bend (3003) and is divided into a first main body segment (3100) and a second main body segment (3200) by the bend (3003). The first connecting part (3001) is configured as the end of the first main body segment (3100) and the second connecting part (3002) is configured as the end of the second main body segment (3200).

6. The connection structure according to claim 5, characterized in that, The first main body segment (3100) is configured as a columnar ring, and the curved portion (3003) is configured as a ring circumferentially connected to the first main body segment (3100). The orientation of the first connecting portion (3001) is the same as that of the second connecting portion (3002).

7. The connection structure according to claim 2, characterized in that, The inner wall (2110) of the insulating cover (2000) includes a side wall (2111) and a top wall (2112). The mounting channel (2200) penetrates the top wall (2112) of the insulating cover (2000). The second connecting part (3002) is welded to the top wall (2112) of the insulating cover (2000).

8. The connection structure according to claim 1, characterized in that, The load lead-out terminal (1000) includes: The lead-out rod (1100) has a first rod end (1101) and a second rod end (1102) at its two ends, respectively. The welding body (1200) has a welding surface (1201) and a connecting surface (1202). The first rod end (1101) of the lead-out rod (1100) is connected to the connecting surface (1202) of the welding body (1200). The first connecting part (3001) of the connecting component (3000) is connected to the connecting surface (1202) of the welding body (1200). The lead-out rod (1100) passes through the installation channel (2200), and the welding body (1200) is located outside the installation channel (2200).

9. The connection structure according to claim 1, characterized in that, The insulating cover (2000) is made of ceramic.

10. A relay, characterized in that, The relay includes at least the connection structure as described in any one of claims 1-9.

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