relay

Abstract

The application relates to a relay, which comprises a shell, a ceramic cover arranged in the shell, and a lead-out end installed in the ceramic cover and extending from the inside of the shell to the outside of the shell, and an insulating ring which is a ring-shaped piece of elastic insulating material, the insulating ring being sleeved on the circumferential side of the lead-out end and being press-fitted between the shell and the ceramic cover in an interference manner to enhance the voltage insulation capability of the lead-out end. In this way, the insulating ring which is a ring-shaped piece of elastic insulating material is sleeved on the circumferential side of the lead-out end and is press-fitted between the shell and the ceramic cover in an interference manner, so that the insulating ring abuts against the bottom wall of the shell and the top wall of the ceramic cover. In this way, the insulating ring can realize insulation isolation of the lead-out end, the voltage insulation capability of the lead-out end is enhanced, the point-gluing treatment between the lead-out end and the ceramic cover is not needed, the voltage insulation capability of the relay is improved, and the reliability of the relay in operation is improved.

Description

Technical Field

[0001] This application relates to the field of power electrical appliances technology, and in particular to a relay. Background Technology

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

[0003] Currently, to meet the withstand voltage insulation requirements, relays typically have adhesive applied to the connection between the leads and the ceramic cover to improve this capability. However, during installation, factors such as installation stress can damage the adhesive, affecting the relay's withstand voltage insulation performance. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the adhesive application of current relays may be damaged due to installation stress and other reasons, thus affecting their withstand voltage insulation capability. A better solution is to provide a relay that enhances the withstand voltage insulation capability of the leads, eliminating the need for adhesive application between the leads and the ceramic cover, thereby improving the relay's withstand voltage insulation capability.

[0005] A relay, comprising:

[0006] shell;

[0007] A ceramic cover, disposed within the outer casing; and

[0008] The lead-out end is inserted and installed in the ceramic cover, and extends from the inside of the outer shell to the outside of the outer shell;

[0009] An insulating ring is a ring-shaped component made of elastic insulating material; the insulating ring is sleeved around the periphery of the lead-out end and is press-fitted between the outer shell and the ceramic cover to enhance the pressure resistance and insulation capability of the lead-out end.

[0010] In one embodiment of this application, the insulating ring includes an annular insulating body with a mounting hole. The insulating body is sleeved around the periphery of the lead-out end through the mounting hole and is located between the outer shell and the ceramic cover.

[0011] In one embodiment of this application, the insulating body is interference-fitted onto the periphery of the lead-out end.

[0012] In one embodiment of this application, the insulating ring further includes a first annular protrusion, which is disposed on the upper surface of the insulating body in a manner surrounding the mounting hole, and the first protrusion is pressed between the insulating body and the outer shell.

[0013] In one embodiment of this application, the outer shell is provided with an outlet hole for the outlet end to pass through, and the bottom wall of the outer shell is provided with a recessed first mating groove. The first mating groove surrounds the periphery of the outlet hole and is correspondingly provided with the first protrusion. The first protrusion is at least partially installed in the first mating groove and abuts against the inner wall of the first mating groove with interference fit.

[0014] In one embodiment of this application, the first protrusion is located at the outer peripheral edge of the insulating body, or the first protrusion is located in the middle region of the insulating body and has a predetermined distance from the outer peripheral edge and inner peripheral edge of the insulating body;

[0015] And / or, the insulating body and the first protrusion are an integral structure.

[0016] In one embodiment of this application, the insulating ring further includes a second annular protrusion, which is disposed on the lower surface of the insulating body in a manner surrounding the mounting hole, and the second protrusion is pressed between the insulating body and the ceramic cover.

[0017] In one embodiment of this application, the ceramic cover is provided with a fixing hole for the lead-out end to pass through, and the top wall of the ceramic cover is provided with a recessed second mating groove. The second mating groove surrounds the periphery of the fixing hole and is correspondingly provided with the second protrusion. The second protrusion is at least partially installed in the second mating groove and abuts against the inner wall of the second mating groove with interference fit.

[0018] In one embodiment of this application, the second protrusion is located at the outer peripheral edge of the insulating body, or the second protrusion is located in the middle region of the insulating body and has a predetermined distance from the outer peripheral edge and inner peripheral edge of the insulating body;

[0019] And / or, the insulating body and the second protrusion are an integral structure.

[0020] In one embodiment of this application, the relay includes two leads and two insulating rings, with a preset distance between the two insulating rings. The two leads are spaced apart through the housing, and each insulating ring is sleeved on one of the leads and pressed between the housing and the ceramic cover.

[0021] In one embodiment of this application, the top wall of the ceramic cover is provided with a recessed first receiving groove, which is strip-shaped and located between the two leads;

[0022] Insulating adhesive is filled into the first receiving groove and adhered between the ceramic cover and the outer shell.

[0023] In one embodiment of this application, the bottom wall of the outer shell is provided with a recessed second receiving groove. The second receiving groove is strip-shaped and located between the two leads. The second receiving groove is also correspondingly provided with and communicates with the first receiving groove.

[0024] The insulating adhesive is filled in the first receiving groove and the second receiving groove.

[0025] In one embodiment of this application, the outer shell is further provided with a protrusion, the protrusion is disposed in the second receiving groove and extends toward the ceramic cover, the protrusion being disposed corresponding to the first receiving groove;

[0026] The insulating adhesive is filled in the first and second receiving grooves and bonded to the protrusion.

[0027] In one embodiment of this application, the insulating ring is made of rubber or silicone material;

[0028] And / or, the relay is a high-voltage DC relay.

[0029] By adopting the above technical solution, this application has at least the following technical effects:

[0030] In the relay of this application, a ceramic cover is located within a housing, and an insulating ring is fitted onto the lead-out terminal, positioned between the housing and the ceramic cover. The lead-out terminal passes through and is installed between the ceramic cover and the housing. Thus, the insulating ring, made of elastic insulating material, is fitted around the circumference of the lead-out terminal and presses against the housing and the ceramic cover with an interference fit, so that the insulating ring abuts against the bottom wall of the housing and the top wall of the ceramic cover. This way, the insulating ring enhances the withstand voltage insulation capability of the lead-out terminal, eliminating the need for adhesive application at the connection between the lead-out terminal and the ceramic cover, thereby improving the relay's withstand voltage insulation capability and ultimately enhancing the reliability of the relay operation. Attached Figure Description

[0031] Figure 1 This is an exploded view of a relay according to an embodiment of this application.

[0032] Figure 2 for Figure 1 The image shows a cross-sectional view of the relay.

[0033] Figure 3 for Figure 1 The diagram shows the connection between the ceramic cover and the lead-out terminal in the relay.

[0034] Figure 4 for Figure 1 The diagram shows the insulating ring in the relay.

[0035] Figure 5 for Figure 2 The image shows a magnified view of the relay at point A.

[0036] Figure 6 for Figure 2 The image shows a magnified view of the relay at point B.

[0037] Wherein: 100, relay; 110, housing; 111, lead-out hole; 112, second receiving groove; 113, protrusion; 120, ceramic cover; 121, fixing hole; 122, second mating groove; 123, first receiving groove; 130, lead-out end; 140, insulating ring; 141, insulating body; 1411, mounting hole; 142, first protrusion; 143, second protrusion; 150, drive structure. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Understandably, a relay is an electronic control device that plays a role in automatic adjustment, safety protection, and circuit switching in a circuit. Currently, to meet the withstand voltage and insulation requirements, adhesive is usually applied to the connection between the relay's leads and the ceramic cover to improve its withstand voltage and insulation capabilities. However, if the amount of adhesive applied is insufficient or the adhesive application position is off-center during installation, it will affect the relay's withstand voltage and insulation capabilities.

[0045] For this purpose, please refer to Figures 1 to 4 This application provides a relay 100. Optionally, the relay 100 may be a high-voltage DC relay. Figure 1 This is an exploded view of a relay 100 according to an embodiment of this application. Figure 2 for Figure 1 The cross-sectional view of relay 100 shown is shown. Figure 3 for Figure 1 The diagram shows the interaction between the ceramic cover 120 and the lead-out terminal 130 in the relay 100. Figure 4 for Figure 1 A schematic diagram of the insulating ring 140 in the relay 100 shown.

[0046] The relay 100 of this application has an insulating ring 140 made of elastic insulating material sleeved around the lead-out terminal 130 and press-fitted between the housing 110 and the ceramic cover 120, so that the insulating ring 140 abuts against the bottom wall of the housing 110 and the top wall of the ceramic cover 120. In this way, the insulating ring 140 can enhance the withstand voltage insulation capability of the lead-out terminal 130, eliminating the need for adhesive application at the connection between the lead-out terminal 130 and the ceramic cover 120, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100.

[0047] See Figures 1 to 5 In one embodiment, the relay 100 includes a housing 110, a ceramic cover 120, a lead 130, and an insulating ring 140. The ceramic cover 120 is disposed within the housing 110. The lead 130 is installed through the ceramic cover 120 and extends from the inside of the housing 110 to the outside of the housing 110. The insulating ring 140 is a ring-shaped member made of elastic insulating material and is interference-fitted between the housing 110 and the ceramic cover 120 to enhance the withstand voltage insulation capability of the lead 130. Figure 5 for Figure 2 A magnified view of the relay 100 at point A.

[0048] The outer casing 110 is the external housing of the relay 100. The components of the relay 100 are housed within the outer casing 110, which protects these internal components and ensures the performance of the relay 100. The ceramic cover 120 is a sealing structure within the relay 100. The ceramic cover 120 is housed within the outer casing 110 and serves as the housing for when the relay 100 closes or opens. The ceramic cover 120 can withstand the high electric field strength of high-voltage DC and prevents leakage current or creepage, ensuring stable operation of the relay 100.

[0049] Lead-out terminal 130 is a lead-out component of relay 100. Lead-out terminal 130 is installed through housing 110 and can extend through housing 110. In this way, lead-out terminal 130 can be connected to a wire via a copper busbar on the outside of relay 100 to connect relay 100 to a circuit, thereby enabling relay 100 to control the circuit's on or off state. Lead-out terminal 130 can also be installed through ceramic cover 120, with part of lead-out terminal 130 located inside ceramic cover 120 and part located outside ceramic cover 120.

[0050] The ceramic cover 120 and the lead-out terminal 130 are installed together in the housing 110. At this time, the portion of the lead-out terminal 130 located outside the ceramic cover 120 can extend through the housing 110, thus the lead-out terminal 130 is partly on the outside of the housing 110 and partly on the inside of the housing 110. The lead-out terminal 130 is connected to a copper busbar or the like on the outside of the housing 110, and the portion of the lead-out terminal 130 inside the housing 110 can contact or separate from the moving contact of the relay 100 (mentioned later), thereby enabling the relay 100 to be turned on or off.

[0051] To improve the withstand voltage insulation capability of relay 100, the relay 100 of this application further includes an insulating ring 140, which is a ring-shaped component made of elastic insulating material. The insulating ring 140 is sleeved on the periphery of the lead-out terminal 130 and is press-fitted between the housing 110 and the ceramic cover 120 to enhance the withstand voltage insulation capability of the lead-out terminal 130.

[0052] In this way, the surface of the insulating ring 140 facing the outer casing 110 can abut against the bottom wall of the outer casing 110, and the surface of the insulating ring 140 facing the ceramic cover 120 can abut against the top wall of the ceramic cover 120. It can be understood that the bottom wall of the outer casing 110 refers to the lower inner surface of the outer casing 110, that is, the surface of the outer casing 110 opposite to the top of the ceramic cover 120, and the top wall of the ceramic cover 120 refers to the upper surface of the ceramic cover 120, that is, the surface opposite to the bottom wall of the outer casing 110.

[0053] The insulating ring 140 is made of elastic insulating material. In this way, after the insulating ring 140 is pressed between the outer shell 110 and the ceramic cover 120, the insulating ring 140 can abut against the bottom wall of the outer shell 110 and the top wall of the ceramic cover 120. At the same time, the insulating ring 140 is also sleeved on the lead-out end 130 to ensure the withstand voltage insulation capability of the lead-out end 130.

[0054] The insulating ring 140 serves as an insulating barrier. After the insulating ring 140 is pressed against the bottom wall of the housing 110 and the bottom wall of the ceramic cover 120, the insulating ring 140 can seal the lead-out terminal 130 and the housing 110, thereby achieving insulation isolation between the lead-out terminal 130 and the ceramic cover 120. This solves the problem of withstand voltage insulation isolation, improves the withstand voltage insulation capability of the relay 100, and thus improves the reliability of the relay 100.

[0055] Furthermore, after using the insulating ring 140 to insulate the lead-out terminal 130 from the ceramic cover 120, there is no need to use adhesive to insulate the lead-out terminal 130 from the ceramic cover 120. This avoids the problem of poor voltage withstand insulation capability of the relay 100 due to adhesive damage caused by installation stress during installation.

[0056] In the relay 100 of the above embodiment, an insulating ring 140 made of elastic insulating material is sleeved around the lead-out terminal 130 and press-fitted between the housing 110 and the ceramic cover 120, so that the insulating ring 140 abuts against the bottom wall of the housing 110 and the top wall of the ceramic cover 120. In this way, the insulating ring 140 can enhance the withstand voltage insulation capability of the lead-out terminal 130, eliminating the need for adhesive application between the lead-out terminal 130 and the ceramic cover 120, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100.

[0057] See Figures 1 to 5 In one embodiment, the lead-out hole 111 penetrates the shell wall of the outer shell 110 to connect the inner and outer sides of the outer shell 110. The portion of the lead-out end 130 located outside the ceramic cover 120 can be installed through the lead-out hole 111 and extend through the lead-out hole 111, so that the lead-out end 130 is partly outside the outer shell 110 and partly located inside the outer shell 110.

[0058] See Figures 1 to 5 In one embodiment, the ceramic cover 120 is provided with a through fixing hole 121, which is correspondingly provided and communicates with the lead-out hole 111. The lead-out end 130 is installed through the fixing hole 121 and extends from the inside of the outer shell 110 through the lead-out hole 111 to the outside of the outer shell 110. The lead-out end 130 can be installed through the fixing hole 121, so that part of the lead-out end 130 is located inside the ceramic cover 120 and part of it is located outside the ceramic cover 120.

[0059] See Figure 2 and Figure 5In one embodiment, the diameter of the lead-out hole 111 is greater than or equal to the outer diameter of the lead-out end 130. This facilitates the lead-out end 130 being inserted and installed into the lead-out hole 111. In this embodiment, the diameter of the lead-out hole 111 is greater than the outer diameter of the lead-out end 130. That is, after the lead-out end 130 is inserted and installed into the lead-out hole 111, there is a certain gap between the outer wall of the lead-out end 130 and the inner wall of the lead-out hole 111. This facilitates the assembly of the lead-out end 130 with the outer casing 110. Of course, in other embodiments, the diameter of the lead-out hole 111 may also be equal to the outer diameter of the lead-out end 130.

[0060] See Figure 1 and Figure 2 In one embodiment, the relay 100 further includes a moving contact (not shown) and a drive structure 150. The moving contact is movably disposed in the ceramic cover 120 and is disposed opposite to the lead-out terminal 130. The drive structure 150 is disposed in the housing 110 and is located below the ceramic cover 120. The drive structure 150 can drive the moving contact to move toward or away from the lead-out terminal 130 so that the moving contact contacts or separates from the lead-out terminal 130 in the ceramic cover 120.

[0061] The moving contact is a component that mates with the lead-out terminal 130. The moving contact is located below the lead-out terminal 130 along the height direction of the lead-out terminal 130 and can move along the height direction of the lead-out terminal 130. The moving contact can rise or fall along the height direction of the lead-out terminal 130, so that the moving contact can contact or separate from the lead-out terminal 130 to realize the conduction or disconnection of the relay 100, so as to connect the relay 100 to the circuit.

[0062] The drive structure 150 is the power source for the relay 100. The drive structure 150 is located below the ceramic cover 120, and its output end extends into the inner side of the ceramic cover 120 and connects to the moving contact. The drive structure 150 can drive the moving contact to move along the height direction of the lead-out end 130 towards or away from the lead-out end 130, so that the moving contact contacts or separates from the lead-out end 130.

[0063] See Figures 1 to 5 In one embodiment, the insulating ring 140 is made of rubber or silicone. That is, the insulating ring 140 is a rubber pad or silicone pad. The rubber or silicone material enables the insulating ring 140 to have certain insulating properties. When the insulating ring 140 is press-fitted between the housing 110 and the ceramic cover 120, the insulating ring 140 can enhance the withstand voltage insulation capability of the lead 130 and can cover the ceramic cover 120 on its periphery to increase the creepage distance, thereby improving the withstand voltage insulation capability of the relay 100.

[0064] In other embodiments of this application, the insulating ring 140 may also be made of polymer materials such as TPU (thermoplastic polyurethane elastomer) or TPE (thermoplastic elastomer). Of course, the insulating ring 140 may also be made of other elastic insulating materials.

[0065] See Figures 1 to 3 In one embodiment, the relay 100 includes two leads 130 and two insulating rings 140, with a predetermined gap between the two insulating rings 140. The two leads 130 are spaced apart and pass through the housing 110. Each insulating ring 140 is fitted onto one lead 130 and is press-fitted between the housing 110 and the ceramic cover 120. The housing 110 has two lead holes 111, and the ceramic cover 120 has two fixing holes 121. Each lead 130 passes through and is installed in the corresponding fixing hole 121 and the corresponding lead hole 111.

[0066] Each insulating ring 140 is fitted onto a lead-out terminal 130 and abuts against the bottom wall of the housing 110 and the top wall of the ceramic cover 120 on the periphery of the corresponding lead-out terminal 130. In this way, the insulating ring 140 can achieve insulation isolation of the lead-out terminal 130, thereby enhancing the withstand voltage insulation capability of the lead-out terminal 130 and improving the reliability of the relay 100.

[0067] Meanwhile, the insulating ring 140 also provides insulation isolation between the two leads 130 to increase the creepage distance and further improve the withstand voltage insulation capability of the relay 100. Furthermore, after each insulating ring 140 is fitted onto the corresponding lead 130, the insulating ring 140 provides insulation isolation between the two leads 130, thereby increasing the high voltage withstand voltage insulation capability between a pair of leads 130.

[0068] When the driving structure 150 drives the moving contact to rise in the height direction, the moving contact can simultaneously contact both leads 130 to form a conductive path. When the driving structure 150 drives the moving contact to descend in the height direction, the moving contact can simultaneously separate from both leads 130 to form an open circuit. Moreover, the contact or separation of the moving contact with the two leads 130 can increase the current carrying capacity of the relay 100 and improve the reliability of the relay 100.

[0069] It is worth noting that the two insulating rings 140 have the same structure, and the following description will only use the structure of one of the insulating rings 140 as an example.

[0070] See Figures 1 to 6 In one embodiment, the insulating ring 140 includes an annular insulating body 141. The insulating body 141 is provided with a mounting hole 1411. The insulating body 141 is sleeved on the periphery of the lead-out end 130 through the mounting hole 1411 and is located between the outer shell 110 and the ceramic cover 120. Figure 6 for Figure 2 A magnified view of the relay 100 at point B.

[0071] The insulating body 141 is the main component of the insulating ring 140. The insulating body 141 has a through mounting hole 1411 in the middle so that the insulating body 141 is arranged in a ring shape. In this way, the insulating body 141 can be sleeved on the lead-out end 130 through the mounting hole 1411 so that the insulating ring 140 can be installed between the bottom wall of the outer shell 110 and the top wall of the ceramic cover 120.

[0072] After the insulating body 141 is pressed against the housing 110 and the ceramic cover 120 with an interference fit, the insulating body 141 abuts against the bottom wall of the housing 110 with an interference fit. In this way, the bottom wall of the housing 110 can compress the insulating body 141 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100 operation.

[0073] See Figures 1 to 6 In one embodiment, the insulating body 141 is interference-fitted onto the periphery of the lead-out end 130. That is, the lead-out end 130 is interference-fitted into the mounting hole 1411. In this way, the outer wall of the lead-out end 130 can compress the insulating body 141 to ensure the withstand voltage insulation capability of the lead-out end 130.

[0074] See Figures 1 to 6 In one embodiment, the insulating ring 140 further includes a first protrusion 142 in an annular shape. The first protrusion 142 is disposed on the upper surface of the insulating body 141 in a manner that surrounds the mounting hole 1411, and the first protrusion 142 is pressed between the insulating body 141 and the outer shell 110. Figure 6 for Figure 2 A magnified view of the relay 100 at point B.

[0075] The first protrusion 142 is a raised rib on the upper surface of the insulating body 141. The first protrusion 142 protrudes from the upper surface of the insulating body 141 and is arranged in a circular structure on the upper surface of the insulating body 141, such as... Figures 4 to 6 As shown, the first protrusion 142 also surrounds the periphery of the mounting hole 1411.

[0076] After the insulating ring 140 is pressed against the housing 110 and the ceramic cover 120 with an interference fit, the insulating ring 140 can abut against the bottom wall of the housing 110 with an interference fit through the first protrusion 142. In this way, the bottom wall of the housing 110 can compress the first protrusion 142 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100 operation.

[0077] See Figures 1 to 6 In one embodiment, the bottom wall of the outer casing 110 is provided with a recessed first mating groove (not shown). The first mating groove surrounds the periphery of the outlet hole 111 and is correspondingly provided with the first protrusion 142. The first protrusion 142 is at least partially installed in the first mating groove and abuts against the inner wall of the first mating groove with interference fit.

[0078] The first mating groove is recessed in the bottom wall of the outer casing 110 and surrounds the periphery of the lead-out hole 111. The first mating groove can be correspondingly provided with the first protrusion 142. In this way, after the insulating ring 140 is pressed between the ceramic cover 120 and the outer casing 110 with an interference fit, the first protrusion 142 can be at least partially installed in the first mating groove.

[0079] At this time, the first protrusion 142 can press against the inner wall of the first mating groove so that the first protrusion 142 is press-fitted into the first mating groove, thereby achieving insulation isolation of the lead-out terminal 130, enhancing the withstand voltage insulation capability of the lead-out terminal 130, and thus improving the withstand voltage insulation capability of the relay 100.

[0080] Of course, in other embodiments, the bottom wall of the housing 110 may not have the first mating groove. After the insulating ring 140 is pressed between the ceramic cover 120 and the housing 110 with an interference fit, the first protrusion 142 can directly abut against the bottom wall of the housing 110 with an interference fit, so as to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, and thus improve the withstand voltage insulation capability of the relay 100.

[0081] See Figures 1 to 6 In one embodiment of this application, the first protrusion 142 is located at the outer peripheral edge of the insulating body 141. That is, the first protrusion 142 is arranged in a ring shape at the outer peripheral edge of the insulating body 141, and there is a certain distance between the first protrusion 142 and the inner peripheral edge of the insulating body 141. In this way, after the insulating ring 140 is sleeved on the lead-out end 130 and installed between the outer shell 110 and the ceramic cover 120, the first protrusion 142 will not be exposed through the lead-out hole 111, but can abut against the bottom wall of the outer shell 110.

[0082] In other words, after the first protrusion 142 is disposed on the outer peripheral edge of the insulating body 141, the first protrusion 142 can accurately abut against the bottom wall of the housing 110 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, and thereby improve the withstand voltage insulation capability of the relay 100.

[0083] In another embodiment of this application, the first protrusion 142 is located in the middle region of the insulating body 141 and has a predetermined distance from the outer and inner peripheral edges of the insulating body 141. That is, the first protrusion 142 is located between the outer and inner peripheral edges of the insulating body 141. After the insulating ring 140 is sleeved on the lead-out end 130 and installed between the outer shell 110 and the ceramic cover 120, the first protrusion 142 will not be exposed through the lead-out hole 111, but can abut against the bottom wall of the outer shell 110.

[0084] See Figures 1 to 6 In one embodiment, the insulating body 141 and the first protrusion 142 are integrally formed. That is, the insulating body 141 and the first protrusion 142 can be integrally molded. This reduces the number of parts in the insulating ring 140, and the insulating body 141 and the first protrusion 142 do not need to be assembled, facilitating the assembly of the insulating ring 140 and the ceramic cover 120.

[0085] See Figures 1 to 6 In one embodiment, the insulating ring 140 further includes a second protrusion 143 in an annular shape. The second protrusion 143 is disposed on the lower surface of the insulating body 141 in a manner surrounding the mounting hole 1411, and the second protrusion 143 is pressed between the insulating body 141 and the ceramic cover 120.

[0086] The second protrusion 143 is a raised rib on the lower surface of the insulating body 141. The second protrusion 143 protrudes from the lower surface of the insulating body 141 and is arranged in a circular structure on the lower surface of the insulating body 141, such as... Figures 4 to 6 As shown, the second protrusion 143 also surrounds the periphery of the mounting hole 1411.

[0087] After the insulating ring 140 is pressed against the housing 110 and the ceramic cover 120 with an interference fit, the insulating ring 140 can abut against the top wall of the ceramic cover 120 with an interference fit through the second protrusion 143. In this way, the top wall of the ceramic cover 120 can compress the second protrusion 143 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100 operation.

[0088] See Figures 1 to 6 In one embodiment, the top wall of the ceramic cover 120 is provided with a recessed second mating groove 122. The second mating groove 122 surrounds the periphery of the fixing hole 121 and is correspondingly provided with the second protrusion 143. The second protrusion 143 is at least partially installed in the second mating groove 122 and abuts against the inner wall of the second mating groove 122 with interference fit.

[0089] The second mating groove 122 is recessed in the top wall of the ceramic cover 120 and surrounds the periphery of the fixing hole 121. The second mating groove 122 can be correspondingly provided with the second protrusion 143. The engagement between the second protrusion 143 and the second mating groove 122 enables the positioning of the insulating ring 140 and the ceramic cover 120, facilitating the installation of the insulating ring 140 and preventing the insulating ring 140 from shifting relative to the ceramic cover 120, thus ensuring that the insulating ring 140 is accurately installed on the top of the ceramic cover 120.

[0090] After the insulating ring 140 is disposed on the top of the ceramic cover 120, the second protrusion 143 can be at least partially installed in the second mating groove 122. At this time, the second protrusion 143 can press against the inner wall of the second mating groove 122 so that the second protrusion 143 is press-fitted into the second mating groove 122, thereby achieving insulation isolation of the lead-out terminal 130, enhancing the withstand voltage insulation capability of the lead-out terminal 130, and thus improving the withstand voltage insulation capability of the relay 100.

[0091] Of course, in other embodiments, the top wall of the ceramic cover 120 may not have the second mating groove 122. After the insulating ring 140 is pressed between the ceramic cover 120 and the outer shell 110 with an interference fit, the second protrusion 143 can directly abut against the top wall of the ceramic cover 120 with an interference fit, so as to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, and thus improve the withstand voltage insulation capability of the relay 100.

[0092] See Figures 1 to 6 In one embodiment of this application, the second protrusion 143 is located at the outer peripheral edge of the insulating body 141. That is, the second protrusion 143 is arranged in a ring shape at the outer peripheral edge of the insulating body 141, and there is a certain distance between the second protrusion 143 and the inner peripheral edge of the insulating body 141. In this way, the projection of the second protrusion 143 and the first protrusion 142 on the top wall of the ceramic cover 120 coincides, which can improve the structural strength of the insulating ring 140 and prevent the insulating ring 140 from breaking at the connection between the first protrusion 142 and the second protrusion 143.

[0093] Of course, in another embodiment of this application, the second protrusion 143 is located in the middle region of the insulating body 141 and has a predetermined distance from the outer and inner peripheral edges of the insulating body 141. That is, the second protrusion 143 is located between the outer and inner peripheral edges of the insulating body 141. After the insulating ring 140 is sleeved on the lead-out end 130 and installed between the outer shell 110 and the ceramic cover 120, the second protrusion 143 can correspond to the first protrusion 142 to improve the structural strength of the insulating ring 140.

[0094] See Figures 1 to 6In one embodiment, the insulating body 141 and the second protrusion 143 are an integral structure. That is, the insulating body 141 and the second protrusion 143 can be integrally formed. This reduces the number of parts in the insulating ring 140, and the insulating body 141 and the second protrusion 143 do not need to be assembled, which facilitates the assembly of the insulating ring 140 and the ceramic cover 120.

[0095] See Figures 1 to 6 In one embodiment of this application, the insulating ring 140 includes an insulating body 141, a first protrusion 142 and a second protrusion 143. The first protrusion 142 is disposed on the surface of the insulating body 141 facing away from the ceramic cover 120, and the second protrusion 143 is disposed on the surface of the insulating body 141 facing the ceramic cover 120.

[0096] The insulating body 141 is fitted onto the lead-out end 130 through the mounting hole 1411 and is located between the bottom wall of the outer shell 110 and the top wall of the ceramic cover 120. The first protrusion 142 can abut against the bottom wall of the outer shell 110, and the second protrusion 143 can abut against the top wall of the ceramic cover 120, so as to achieve insulation isolation of the lead-out end 130, enhance the withstand voltage insulation capability of the lead-out end 130, and thus achieve insulation isolation between the outer shell 110 and the ceramic cover 120.

[0097] In another embodiment of this application, the insulating ring 140 may also include only an insulating body 141 and a first protrusion 142. The first protrusion 142 is disposed on the surface of the insulating body 141 facing away from the ceramic cover 120. The insulating body 141 is sleeved on the lead-out end 130 through the mounting hole 1411 and is located between the bottom wall of the outer shell 110 and the top wall of the ceramic cover 120. The first protrusion 142 can abut against the bottom wall of the outer shell 110, and the lower surface of the insulating body 141 can abut against the top wall of the ceramic cover 120.

[0098] In another embodiment of this application, the insulating ring 140 may also include only an insulating body 141 and a second protrusion 143. The second protrusion 143 is disposed on the surface of the insulating body 141 facing the ceramic cover 120. The insulating body 141 is sleeved on the lead-out end 130 through the mounting hole 1411 and is located between the bottom wall of the outer shell 110 and the top wall of the ceramic cover 120. The second protrusion 143 can abut against the top wall of the ceramic cover 120, and the upper surface of the insulating body 141 can abut against the bottom wall of the outer shell 110.

[0099] See Figures 1 to 4 , Figure 6 In one embodiment, the top wall of the ceramic cover 120 is provided with a recessed first receiving groove 123, which is strip-shaped and located between the two leads 130. Insulating adhesive is filled in the first receiving groove 123 and adhered between the ceramic cover 120 and the outer shell 110.

[0100] The upper surface of the ceramic cover 120 is provided with a recessed first receiving groove 123. The first receiving groove 123 is arranged in a strip-shaped structure on the top wall of the ceramic cover 120, such as... Figure 1 and Figure 3 As shown, the first receiving groove 123 extends along the width direction of the ceramic cover 120. The first receiving groove 123 is located between the two leads 130 and can separate the two leads 130.

[0101] The first receiving groove 123 serves to contain insulating adhesive. After the insulating adhesive is injected into the first receiving groove 123, the insulating adhesive adheres to the inner wall of the first receiving groove 123. At the same time, the insulating adhesive can also adhere to the bottom wall of the outer shell 110, so that the insulating adhesive is adhered between the ceramic cover 120 and the outer shell 110.

[0102] In this way, after the insulating adhesive is cured, it can abut against the bottom wall of the housing 110 and the top wall of the ceramic cover 120. The cured insulating adhesive provides insulation between the two leads 130 to form an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130, improving the high voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0103] See Figures 1 to 4 , Figure 6 In one embodiment, the bottom wall of the outer casing 110 is provided with a recessed second receiving groove 112. The second receiving groove 112 is strip-shaped and located between the two leads 130. The second receiving groove 112 is also correspondingly provided with and communicates with the first receiving groove 123. Insulating adhesive is filled in the first receiving groove 123 and the second receiving groove 112.

[0104] The lower surface of the outer casing 110 is provided with a recessed second receiving groove 112. The second receiving groove 112 is arranged in a strip-shaped structure on the bottom wall of the outer casing 110, such as... Figure 2 and Figure 6 As shown, the second receiving groove 112 extends along the width direction of the ceramic cover 120 and is correspondingly arranged and connected with the first receiving groove 123. The second receiving groove 112 is located between the two leads 130 and can separate the two leads 130.

[0105] The second receiving groove 112 can serve to contain insulating adhesive. After the insulating adhesive is injected into the first receiving groove 123, the insulating adhesive can fill the second receiving groove 112. The insulating adhesive can bond the inner wall of the first receiving groove 123 and the inner wall of the second receiving groove 112, so that the insulating adhesive is bonded between the ceramic cover 120 and the outer shell 110.

[0106] In this way, after the insulating adhesive is cured, it can abut against the bottom wall of the housing 110 and the top wall of the ceramic cover 120. The cured insulating adhesive provides insulation between the two leads 130 to form an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130, improving the high voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0107] See Figures 1 to 4 , Figure 6 In one embodiment, the outer casing 110 is further provided with a protrusion 113, which is disposed in the second receiving groove 112 and extends toward the ceramic cover 120. The protrusion 113 is disposed corresponding to the first receiving groove 123. Insulating adhesive is filled in the first receiving groove 123 and the second receiving groove 112 and is bonded to the protrusion 113.

[0108] The protrusion 113 is located on the bottom wall of the outer casing 110 and is disposed in the second receiving groove 112, with the bottom of the protrusion 113 protruding from the bottom wall of the outer casing 110. When the outer casing 110, the insulating ring 140, and the ceramic cover 120 are assembled, the protrusion 113 can be positioned above the first receiving groove 123 or partially inserted into the first receiving groove 123. The cooperation between the protrusion 113 and the first receiving groove 123 enables accurate positioning of the outer casing 110 and the ceramic cover 120.

[0109] Furthermore, after the insulating adhesive is injected into the first receiving groove 123, the insulating adhesive can be coated on the outer wall of the protrusion 113, thereby the insulating adhesive can adhere to the inner wall of the first receiving groove 123, the outer wall of the protrusion 113 and the inner wall of the second receiving groove 112. In this way, the protrusion 113 can increase the contact area between the bottom wall of the outer shell 110 and the insulating adhesive, thereby improving the insulation and isolation effect of the lead-out end 130.

[0110] In this way, after the insulating adhesive is cured, it can abut against the bottom wall of the housing 110 and the top wall of the ceramic cover 120 through the protrusion 113. The cured insulating adhesive can provide insulation between the two leads 130 through the protrusion 113, so as to form an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130, improving the high voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0111] The relay 100 of this application has an insulating ring 140 made of elastic insulating material sleeved around the lead-out terminal 130 and press-fitted between the housing 110 and the ceramic cover 120, so that the insulating ring 140 abuts against the bottom wall of the housing 110 and the top wall of the ceramic cover 120. In this way, the insulating ring 140 can enhance the withstand voltage insulation capability of the lead-out terminal 130, eliminating the need for adhesive application between the lead-out terminal 130 and the ceramic cover 120, thereby improving the withstand voltage insulation capability of the relay 100 and improving the reliability of the relay 100.

[0112] An insulating ring 140 may have a first protrusion 142 surrounding the mounting hole 1411 on the insulating body 141. The first protrusion 142 abuts against the bottom wall of the housing 110 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, and thus improve the withstand voltage insulation capability of the relay 100. Furthermore, a first mating groove may be provided on the bottom wall of the housing 110 to interference fit the first protrusion 142, further improving the withstand voltage insulation capability of the lead-out terminal 130.

[0113] The insulating ring 140 may have a second protrusion 143 surrounding the mounting hole 1411 on the insulating body 141. The second protrusion 143 abuts against the top wall of the ceramic cover 120 to achieve insulation isolation of the lead-out terminal 130, enhance the withstand voltage insulation capability of the lead-out terminal 130, and thus improve the withstand voltage insulation capability of the relay 100. Furthermore, a second mating groove 122 may be provided on the top wall of the ceramic cover 120. The second mating groove 122 interference-fits the second protrusion 143, thereby positioning the insulating ring 140 and enhancing the withstand voltage insulation capability of the lead-out terminal 130.

[0114] Meanwhile, the top wall of the ceramic cover 120 is provided with a recessed first receiving groove 123, which is strip-shaped and located between the two leads 130. This allows insulating adhesive to be injected into the first receiving groove 123. The insulating adhesive adheres to the top wall of the outer casing 110, thus bonding the bottom wall of the outer casing 110 to the top wall of the ceramic cover 120. After curing, the insulating adhesive forms an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130 and improving the high-voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0115] The bottom wall of the housing 110 is provided with a recessed second receiving groove 112. The second receiving groove 112 is strip-shaped and located between the two leads 130. The second receiving groove 112 is correspondingly arranged and connected to the first receiving groove 123. In this way, insulating glue can be injected into the first receiving groove 123. The insulating glue can adhere to the inner wall of the second receiving groove 112, so that the insulating glue adheres to the bottom wall of the housing 110 and the top wall of the ceramic cover 120. After the insulating glue cures, it can form an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130, improving the high voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0116] The bottom wall of the outer casing 110 is also provided with a protruding protrusion 113, which is disposed in the second receiving groove 112 and corresponds to the first receiving groove 123. The cooperation between the protrusion 113 and the first receiving groove 123 enables accurate positioning of the outer casing 110 and the ceramic cover 120. Moreover, insulating adhesive can be injected into the first receiving groove 123. The insulating adhesive can bond the inner wall of the first receiving groove 123, the outer wall of the protrusion 113, and the inner wall of the second receiving groove 112. After the insulating adhesive cures, it can form an insulating wall between the two leads 130, further increasing the insulation path between the two leads 130, improving the high voltage withstand insulation capability of the two leads 130, thereby improving the withstand voltage insulation capability of the relay 100.

[0117] 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.

[0118] 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 relay, characterized in that, include: Outer shell (110); A ceramic cover (120) is disposed within the outer casing (110); as well as The lead-out end (130) is installed through the ceramic cover (120) and extends from the inside of the outer shell (110) to the outside of the outer shell (110); The insulating ring (140) is a ring-shaped part made of elastic insulating material; the insulating ring (140) is sleeved on the periphery of the lead-out end (130) and pressed between the outer shell (110) and the ceramic cover (120) to enhance the pressure resistance insulation capability of the lead-out end (130).

2. The relay according to claim 1, characterized in that, The insulating ring (140) includes an annular insulating body (141), the insulating body (141) is provided with a mounting hole (1411), the insulating body (141) is sleeved on the periphery of the lead-out end (130) through the mounting hole (1411), and is located between the outer shell (110) and the ceramic cover (120).

3. The relay according to claim 2, characterized in that, The insulating body (141) is interference-fitted around the lead-out end (130).

4. The relay according to claim 2, characterized in that, The insulating ring (140) further includes a first protrusion (142) in the shape of an annulus. The first protrusion (142) is disposed on the upper surface of the insulating body (141) in a manner surrounding the mounting hole (1411), and the first protrusion (142) is pressed between the insulating body (141) and the outer shell (110).

5. The relay according to claim 4, characterized in that, The outer casing (110) is provided with an outlet hole (111) through which the outlet end (130) passes. The bottom wall of the outer casing (110) is provided with a recessed first mating groove. The first mating groove surrounds the periphery of the outlet hole (111) and is correspondingly provided with the first protrusion (142). The first protrusion (142) is at least partially installed in the first mating groove and abuts against the inner wall of the first mating groove with interference fit.

6. The relay according to claim 4, characterized in that, The first protrusion (142) is located at the outer peripheral edge of the insulating body (141), or the first protrusion (142) is located in the middle region of the insulating body (141) and has a predetermined distance from the outer peripheral edge and inner peripheral edge of the insulating body (141). And / or, the insulating body (141) and the first protrusion (142) are an integral structure.

7. The relay according to claim 2, characterized in that, The insulating ring (140) further includes a second protrusion (143) in the shape of an annulus. The second protrusion (143) is disposed on the lower surface of the insulating body (141) in a manner surrounding the mounting hole (1411), and the second protrusion (143) is pressed between the insulating body (141) and the ceramic cover (120).

8. The relay according to claim 7, characterized in that, The ceramic cover (120) is provided with a fixing hole (121) through which the lead-out end (130) passes. The top wall of the ceramic cover (120) is provided with a recessed second mating groove (122). The second mating groove (122) surrounds the periphery of the fixing hole (121) and is correspondingly provided with the second protrusion (143). The second protrusion (143) is at least partially installed in the second mating groove (122) and abuts against the inner wall of the second mating groove (122) with interference fit.

9. The relay according to claim 8, characterized in that, The second protrusion (143) is located at the outer peripheral edge of the insulating body (141), or the second protrusion (143) is located in the middle region of the insulating body (141) and has a predetermined distance from the outer peripheral edge and inner peripheral edge of the insulating body (141); And / or, the insulating body (141) and the second protrusion (143) are an integral structure.

10. The relay according to any one of claims 1 to 9, characterized in that, The relay (100) includes two leads (130) and two insulating rings (140). There is a preset distance between the two insulating rings (140). The two leads (130) are spaced apart and pass through the housing (110). Each insulating ring (140) is sleeved on one of the leads (130) and pressed between the housing (110) and the ceramic cover (120).

11. The relay according to claim 10, characterized in that, The top wall of the ceramic cover (120) is provided with a recessed first receiving groove (123), which is strip-shaped and located between the two leads (130); Insulating adhesive is filled in the first receiving groove (123) and adhered between the ceramic cover (120) and the outer shell (110).

12. The relay according to claim 11, characterized in that, The bottom wall of the outer shell (110) is provided with a recessed second receiving groove (112). The second receiving groove (112) is strip-shaped and located between the two leads (130). The second receiving groove (112) is also correspondingly provided and connected to the first receiving groove (123). The insulating adhesive is filled in the first receiving groove (123) and the second receiving groove (112).

13. The relay according to claim 12, characterized in that, The outer shell (110) is also provided with a protrusion (113), which is disposed in the second receiving groove (112) and extends toward the ceramic cover (120). The protrusion (113) is provided corresponding to the first receiving groove (123). The insulating adhesive is filled in the first receiving groove (123) and the second receiving groove (112) and is bonded to the protrusion (113).

14. The relay according to any one of claims 1 to 9, characterized in that, The insulating ring (140) is made of rubber or silicone material; And / or, the relay is a high-voltage DC relay.

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