Frame piece, sealing structure and high-voltage direct-current relay
By improving the connection method between the frame plate and the yoke plate, and changing it to welding the back of the yoke plate to the assembly surface, the tensile force is converted into compressive stress, which solves the problem of cracking between the frame plate and the yoke plate in the high-voltage DC relay and enhances the connection reliability and sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-21
AI Technical Summary
In high-voltage DC relays, there is a risk of cracking between the frame plates and the yoke plate, which can lead to the failure of the insulation cover seal.
The connection method between the frame and the yoke plate has been changed to welding the back of the yoke plate to the assembly surface, converting tensile force into compressive stress and enhancing the reliability of the connection.
This improves the connection reliability between the frame and the yoke plate, avoids the risk of separation, and ensures the sealing effect of the sealing structure.
Smart Images
Figure CN224536966U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of relay technology, and in particular to a frame, sealing structure, and high-voltage DC 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] A high-voltage DC relay is a type of relay. In a high-voltage DC relay, the upper end of the frame is welded to a ceramic cover, and the lower end of the frame is welded to a yoke plate to seal the inner cavity of the ceramic cover. The moving contact and the stationary contact are in contact or separated within the inner cavity of the ceramic cover.
[0004] Currently, when using high-voltage DC relays, there is a risk of cracking in the frame and yoke plate, leading to the failure of the insulation cover seal. Utility Model Content
[0005] Therefore, it is necessary to address the problem that cracking of the frame and yoke plate during the use of current high-voltage DC relays may lead to sealing failure of the insulation cover. A frame, sealing structure, and high-voltage DC relay should be provided that can convert the tensile force borne by the frame and yoke plate into compressive stress, avoiding the risk of separation between the frame and yoke plate and enhancing the reliability of the connection between them.
[0006] A frame piece, one end of which is adapted to be welded to an insulating cover, and the other end of which is adapted to be welded to a yoke plate;
[0007] The yoke plate has a mounting surface on the side away from the insulating cover, and the frame plate can surround the edge of the yoke plate and extend to the side of the yoke plate away from the insulating cover, so that the frame plate is welded to the edge of the mounting surface on the side of the yoke plate away from the insulating cover.
[0008] In one embodiment of this application, the frame piece has a first welding portion at one end facing the insulating cover. The first welding portion is arranged in a ring shape and is welded to the insulating cover.
[0009] And / or, the end of the frame piece facing the mounting surface has a second weld portion, the second weld portion being annularly arranged and welded to the mounting surface.
[0010] In one embodiment of this application, the frame includes an annular covering and an annular mounting body. The covering surrounds the periphery of the yoke plate and extends toward the insulating cover for welding connection with the insulating cover.
[0011] The mounting body is disposed on the side of the cover away from the insulating cover and on the side of the yoke plate away from the insulating cover. The mounting body can be welded to the assembly surface.
[0012] In one embodiment of this application, the covering includes an annular connecting body and an annular covering body. The connecting body is disposed on the side of the covering body facing the insulating cover and is welded to the end of the insulating cover facing the yoke plate.
[0013] The covering body surrounds the periphery of the yoke plate, and the side of the covering body opposite to the insulating cover is connected to the mounting body.
[0014] In one embodiment of this application, the covering body further includes a first supporting body and a second supporting body, wherein the first supporting body is disposed on the side of the yoke plate facing the insulating cover and is connected to the connecting body;
[0015] The second support body is arranged around the periphery of the yoke plate. The side of the second support body facing the insulating cover is connected to the first support body, and the side of the second support body away from the insulating cover is connected to the mounting body.
[0016] In one embodiment of this application, the first support body and the second support body are separately disposed and connected by welding, and the second support body and the mounting body are separately disposed and connected by welding.
[0017] Alternatively, the first support body and the second support body are integrated, while the second support body and the installation body are separately disposed and connected by welding.
[0018] Alternatively, the first support body and the second support body are separately disposed and connected by welding, and the second support body and the mounting body are integral;
[0019] Alternatively, the first supporting body and the connecting body may be an integral structure or separate components.
[0020] In one embodiment of this application, the first support body and the mounting body extend toward the central region, and the second support body extends along the height direction and connects the first support body and the mounting body; or, the first support body is inclined, the second support body extends along the height direction, and the mounting body extends toward the central region.
[0021] And / or, the connecting body, the first supporting body, the second supporting body and the mounting body are connected by bending or arc transition.
[0022] In one embodiment of this application, the contact dimension between the frame piece and the edge of the mounting surface along the length direction is 1 / 30 to 1 / 8 of the length of the yoke plate;
[0023] And / or, the welding length between the frame piece and the yoke plate is less than or equal to the contact dimension between the frame piece and the assembly surface along the length direction.
[0024] A sealing structure comprising at least a frame as described in any of the above technical features;
[0025] The sealing structure further includes at least an insulating cover and a yoke plate, the insulating cover and the yoke plate being located on opposite sides of the frame piece;
[0026] The yoke plate has an assembly surface on the side away from the insulating cover. The frame piece is welded to the insulating cover and surrounds the periphery of the yoke plate. The frame piece can be welded to the edge of the assembly surface on the side of the yoke plate away from the insulating cover.
[0027] A high-voltage DC relay includes a sealed structure as described in the above technical features.
[0028] By adopting the above technical solution, this application has at least the following technical effects:
[0029] The frame, sealing structure, and high-voltage DC relay of this application have a frame plate, one end of which is welded to an insulating cover, and the other end of which is welded to a yoke plate. The yoke plate has a mounting surface on the side facing away from the insulating cover. The frame plate can surround the edge of the yoke plate and extend to the side of the yoke plate facing away from the insulating cover. Thus, the frame plate can be welded to the edge of the mounting surface on the side of the yoke plate facing away from the insulating cover.
[0030] The frame plate is welded to the insulating cover and the yoke plate, and is also welded to the edge of the mounting surface on the back of the yoke plate. When the insulating cover is subjected to an external force that would separate the frame plate from the yoke plate, the yoke plate, through the mounting surface, can hold the frame plate in place, converting the tensile force on the frame plate and the yoke plate into compressive stress. In this way, the frame plate and the yoke plate can withstand greater tensile force, eliminating the risk of separation and enhancing the reliability of the connection between them, thus ensuring the sealing effect of the sealing structure. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of a high-voltage DC relay according to an embodiment of this application.
[0032] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the high-voltage DC relay along the AA direction.
[0033] Figure 3 for Figure 1 The diagram shows the sealing structure in the high-voltage DC relay.
[0034] Figure 4 for Figure 3 An exploded view of the sealing structure is shown.
[0035] Figure 5 for Figure 3 The sealing structure shown is a cross-sectional view along the BB direction.
[0036] Figure 6 for Figure 5 The enlarged view of the sealing structure at point C is shown.
[0037] Figure 7 for Figure 6 A schematic diagram of the frame plate in the sealing structure shown.
[0038] Figure 8 for Figure 4 A schematic diagram of the frame plate in the sealing structure shown.
[0039] Figure 9 for Figure 8 The enlarged view of the frame shown at point D.
[0040] Figure 10 for Figure 8 The enlarged view of the frame shown at point E.
[0041] Among them: 1. High voltage DC relay; 10. Sealing structure; 100. Frame plate; 110. First welding part; 120. Second welding part; 130. Covering part; 131. Connecting body; 132. Covering body; 1321. First support body; 1322. Second support body; 140. Mounting body; 200. Yoke plate; 210. Assembly surface; 300. Insulating cover; 310. Inner cavity; 320. Through hole; 40. Driving structure; 50. Moving contact; 60. Stationary contact. Detailed Implementation
[0042] 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.
[0043] 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.
[0044] 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.
[0045] 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.
[0046] 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.
[0047] 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.
[0048] As is understandable, 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. A relay is essentially 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.
[0049] A high-voltage DC relay is a type of relay. In a high-voltage DC relay, the upper end of the frame is welded to a ceramic cover, and the lower end of the frame is welded to a yoke plate to seal the inner cavity of the ceramic cover. The moving contact and the stationary contact contact or separate within the inner cavity of the ceramic cover. When a high-voltage DC relay is in use, the ceramic cover is subjected to an external force in the direction of separation from the yoke plate, i.e., tensile stress is borne between the frame and the yoke plate. Over time, there is a risk that the frame and the yoke plate will separate (crack), leading to the failure of the insulating cover seal.
[0050] For this purpose, please refer to Figures 1 to 5 This application provides a frame plate 100. The frame plate 100 is used in the sealing structure 10 of a high-voltage DC relay 1. Figure 1 This is a schematic diagram of a high-voltage DC relay 1 according to an embodiment of this application. Figure 2 for Figure 1 The cross-sectional view of the high-voltage DC relay 1 shown is along the AA direction. Figure 3 for Figure 1 The diagram shows the sealing structure 10 in the high-voltage DC relay 1. Figure 4 for Figure 3An exploded view of the sealing structure 10 shown. Figure 5 for Figure 3 The sealing structure 10 shown is a cross-sectional view along the BB direction.
[0051] To better illustrate the structure of the frame 100, the structure of the high-voltage DC relay 1 and the sealing structure 10 will be briefly described here. In one embodiment, see [reference needed]. Figures 1 to 5 The high-voltage DC relay 1 includes at least a drive structure 40, a moving contact 50, a stationary contact 60, and a sealing structure 10 as described in this application. The stationary contact 60 is disposed in the sealing structure 10 and extends into the sealing structure 10. The moving contact 50 is movably disposed in the sealing structure 10 along the height direction and is disposed opposite to the stationary contact 60 along the height direction.
[0052] The drive structure 40 is the power source for the movement of the moving contact 50. The drive structure 40 is located below the sealing structure 10, with its output end extending through the sealing structure 10 and into it, and connected to the moving contact 50. The drive structure 40 can drive the moving contact 50 to move along the height direction, enabling the moving contact 50 to contact or separate from the stationary contact 60, thereby turning the high-voltage DC relay 1 on or off.
[0053] like Figure 1 and Figure 3 As shown, the height direction refers to the up-down and top-to-bottom directions, the length direction refers to the left-right directions, and the width direction refers to the front-back directions. These height, width, and length directions apply to the high-voltage DC relay 1 and its components, and will not be elaborated further below.
[0054] In the high-voltage DC relay 1, there are two stationary contacts 60, which are spaced apart along the length direction. When the drive structure 40 drives the moving contact 50 to rise in the height direction, the moving contact 50 can contact the stationary contacts 60 to form a conductive path. When the drive structure 40 drives the moving contact 50 to fall, the moving contact 50 can separate from the stationary contacts 60 to form an open circuit.
[0055] See Figure 4 and Figure 5 In one embodiment, the sealing structure 10 includes an insulating cover 300, a yoke plate 200, and a frame plate 100 as described in this application. The insulating cover 300, the frame plate 100, and the yoke plate 200 are arranged sequentially along the height direction. The frame plate 100 is disposed between the insulating cover 300 and the yoke plate 200. The top of the frame plate 100 is welded to the bottom of the insulating cover 300, and the bottom of the frame plate 100 is welded to the yoke plate 200. The frame plate 100 achieves an indirect connection between the yoke plate 200 and the insulating cover 300.
[0056] The insulating cover 300 serves as the outer shell of the sealed structure 10 and is a structural component that provides a seal for the entire high-voltage DC relay 1. The insulating cover 300 can withstand the high electric field strength of high-voltage DC and prevent leakage current or creepage, ensuring the stable operation of the high-voltage DC relay 1. Optionally, the insulating cover 300 is made of ceramic material, i.e., the insulating cover 300 is a ceramic cover.
[0057] The insulating cover 300 has a through hole 320 connecting its inner cavity 310 and the outer side. The stationary contact 60 passes through the through hole 320 and is mounted on the insulating cover 300. The moving contact 50 is movably disposed in the inner cavity 310 of the insulating cover 300 along the height direction. The frame plate 100 and the yoke plate 200 can cover the bottom of the insulating cover 300. The frame plate 100 and the insulating cover 300, and the frame plate 100 and the yoke plate 200 are connected by welding to seal the inner cavity 310 of the insulating cover 300.
[0058] It should be noted that the welding connection methods in this application include, but are not limited to, laser welding, as well as brazing, resistance welding, etc., as long as a reliable connection between the two components can be achieved. Welding connections will not be described in detail below.
[0059] Thus, the inner cavity 310 of the insulating cover 300 is a closed space, which can be filled with inert gas. The inert gas will not leak through the frame plate 100 and the yoke plate 200. At the same time, the inert gas in the inner cavity 310 of the insulating cover 300 has insulating properties, which can effectively suppress the generation of electric arc and accelerate its extinction, thereby protecting the moving contact 50 and the stationary contact 60 from ablation.
[0060] It is worth noting that the focus of this application is on the structure of the frame 100 and the connection method between the frame 100 and the yoke plate 200. The contact or separation process of the drive structure 40, the moving contact 50 and the stationary contact 60, and other structures of the high-voltage DC relay 1 are not the focus of this application. The following text will only describe the frame 100, and the structure and working principle of the high-voltage DC relay 1 will not be described.
[0061] The frame piece 100 of this application can convert the tensile force borne by the frame piece 100 and the yoke plate 200 into compressive stress. This allows the frame piece 100 and the yoke plate 200 to withstand greater tensile force, eliminating the risk of separation and enhancing the reliability of the connection between them, thus ensuring the sealing effect of the sealing structure 10. The specific structure of the frame piece 100 in some embodiments is described below.
[0062] See Figures 4 to 7In one embodiment, one end of the frame piece 100 is adapted to be welded to the insulating cover 300, and the other end of the frame piece 100 is adapted to be welded to the yoke plate 200. The frame piece 100 can surround the edge of the yoke plate 200 and extend to the side of the yoke plate 200 opposite to the insulating cover 300, so that the frame piece 100 is welded to the edge of the mounting surface 210 on the side of the yoke plate 200 opposite to the insulating cover 300. Figure 6 for Figure 5 The enlarged view of the sealing structure 10 at point C is shown. Figure 7 for Figure 6 A schematic diagram of the frame piece 100 in the sealing structure 10 shown.
[0063] The top of the frame piece 100 is welded to the bottom of the insulating cover 300 to ensure a reliable connection between the frame piece 100 and the insulating cover 300, and to guarantee the sealing of the connection between the frame piece 100 and the insulating cover 300. The bottom of the frame piece 100 is welded to the yoke plate 200 to ensure a reliable connection between the frame piece 100 and the yoke plate 200, thereby ensuring that the yoke plate 200 is reliably installed on the insulating cover 300 and guaranteeing the sealing of the connection between the frame piece 100 and the yoke plate 200, thus ensuring the sealing performance of the sealing structure 10.
[0064] Understandably, when the high-voltage DC relay 1 is in use, the insulating cover 300 will be subjected to an external force in the direction of separation from the yoke plate 200 under the action of current, and consequently the frame 100 will also be subjected to an external force of separation from the yoke plate 200. In the past, the frame and the upper surface of the yoke plate were welded together. However, during long-term use of the high-voltage DC relay, the welded connection between the frame and the yoke plate may loosen, posing a risk of separation between the frame and the yoke plate.
[0065] Therefore, this application modifies the connection position between the frame plate 100 and the yoke plate 200. Specifically, the surface of the yoke plate 200 facing the insulating cover 300 is the upper surface, and the surface of the yoke plate 200 away from the insulating cover 300 is the lower surface or back surface of the yoke plate 200, which is defined as the mounting surface 210. The frame plate 100 can be welded to the mounting surface 210 on the side away from the insulating cover 300, that is, the frame plate 100 is welded to the mounting surface 210 on the back surface of the yoke plate 200.
[0066] Specifically, the frame piece 100 is arranged in a ring and surrounds the periphery of the yoke plate 200. Furthermore, the frame piece 100 extends to the back of the yoke plate 200 to be welded to the edge of the mounting surface 210 on the back of the yoke plate 200. It should be noted that the ring shape defined in this application is not limited to a circle; it can also be other shapes with a closed cross-section, such as a rectangle, square, ellipse, or other shapes, which will not be elaborated further below.
[0067] See Figure 4and Figure 8 , Figure 8 for Figure 4 The diagram shows a schematic of the frame piece 100 in the sealing structure 10. In this embodiment, the yoke plate 200 is rectangular, and the shape of the frame piece 100 matches the shape of the yoke plate 200, that is, the frame piece 100 is rectangular. Further, the frame piece 100 is a rectangular ring. Of course, in other embodiments of this application, the shape of the yoke plate 200 and the shape of the frame piece 100 can both be circular, or other shapes.
[0068] After the frame plate 100 extends to the back of the yoke plate 200, the frame plate 100 can be welded to the edge of the lower surface of the yoke plate 200 (hereinafter referred to as mounting surface 210). When the high-voltage DC relay 1 is in use, the insulating cover 300 is subjected to an external force in the direction that separates the frame plate 100 from the yoke plate 200. Since the bottom of the frame plate 100 is located below the yoke plate 200, the bottom of the frame plate 100 can support the yoke plate 200 to rise. At this time, the yoke plate 200 can squeeze the frame plate 100 so that the force between the frame plate 100 and the yoke plate 200 is a squeezing force.
[0069] Thus, compared to the conventional method of the frame plate pulling the yoke plate, in this application, after the frame plate 100 and the mounting surface 210 on the back of the yoke plate 200 are welded together, the tensile force of the frame plate 100 and the yoke plate 200 can be transformed into compressive stress. In this way, the welded joint between the frame plate 100 and the yoke plate 200 will not bear tensile force, ensuring that the frame plate 100 and the yoke plate 200 remain in contact. Even if the insulating cover 300 applies a greater tensile force to the frame plate 100, the frame plate 100 and the yoke plate 200 will not separate.
[0070] In the above embodiment, the frame piece 100 is welded to the insulating cover 300 and the yoke plate 200, and the edges of the mounting surfaces 210 on the back of the frame piece 100 and the yoke plate 200 are welded together. When the insulating cover 300 is subjected to an external force in the direction that separates the frame piece 100 from the yoke plate 200, the yoke plate 200 can hold and compress the frame piece 100 through the mounting surface 210, so that the tensile force borne by the frame piece 100 and the yoke plate 200 is converted into compressive stress. In this way, the frame piece 100 and the yoke plate 200 can withstand greater tensile force, and there is no risk of separation between the frame piece 100 and the yoke plate 200, which enhances the reliability of the connection between the frame piece 100 and the yoke plate 200 and ensures the sealing effect of the sealing structure 10.
[0071] See Figures 4 to 7In one embodiment, the frame piece 100 has a first welding portion 110 at one end facing the insulating cover 300. The first welding portion 110 is arranged in a ring shape and is welded to the insulating cover 300. The top of the frame piece 100 is provided as the first welding portion 110. Solder is placed on the first welding portion 110, and the first welding portion 110 is welded to the bottom of the insulating cover 300 by welding, so as to realize the welding connection between the frame piece 100 and the insulating cover 300.
[0072] Furthermore, the first welding part 110 is arranged in a ring shape, that is, the first welding part 110 has a circular structure. The first welding part 110 can be arranged around the connection between the insulating cover 300 and the frame 100, so that the first welding part 110 can realize the connection between the frame 100 and the insulating cover 300 and ensure the sealing between the frame 100 and the insulating cover 300.
[0073] See Figures 4 to 7 In one embodiment, the frame piece 100 has a second welding portion 120 at one end facing the mounting surface 210. The second welding portion 120 is arranged in a ring and is welded to the mounting surface 210. The bottom of the frame piece 100 has a second welding portion 120 on the side facing the mounting surface 210. Solder is placed on the second welding portion 120, and the second welding portion 120 is welded to the mounting surface 210 of the yoke plate 200 by welding, so as to realize the welding connection between the frame piece 100 and the yoke plate 200.
[0074] Furthermore, the second welding part 120 is arranged in a ring shape, that is, the second welding part 120 has a circular structure. The second welding part 120 can be arranged around the connection between the frame piece 100 and the yoke plate 200, so that the second welding part 120 can realize the connection between the frame piece 100 and the yoke plate 200 and ensure the sealing between the frame piece 100 and the yoke plate 200.
[0075] See Figures 4 to 8 In one embodiment, the frame piece 100 includes an annular covering 130 and an annular mounting body 140. The covering 130 surrounds the periphery of the yoke plate 200 and extends toward the insulating cover 300 for welding connection. The mounting body 140 is disposed on the side of the covering 130 opposite to the insulating cover 300 and is located on the side of the yoke plate 200 opposite to the insulating cover 300. The mounting body 140 can be welded to the mounting surface 210.
[0076] Both the covering 130 and the mounting body 140 are arranged in a ring shape. The covering 130 is positioned above the mounting body 140 and can surround the periphery of the yoke plate 200, extending towards the insulating cover 300. In this way, the top of the covering 130 is welded to the bottom of the insulating cover 300 to achieve a reliable connection between the frame 100 and the insulating cover 300.
[0077] The mounting body 140 is located on the back side of the yoke plate 200, that is, the frame piece 100 surrounds the periphery of the yoke plate 200 by the covering member 130, so that the mounting body 140 extends to the back side of the yoke plate 200. In this way, the mounting body 140 can cover the edge of the mounting surface 210 and be welded to the edge of the mounting surface 210, thereby realizing the welded connection between the frame piece 100 and the yoke plate 200.
[0078] In one embodiment, the covering 130 and the mounting body 140 are separately disposed. That is, the covering 130 and the mounting body 140 are separate structures. The yoke plate 200 is installed on the inner side of the covering 130, and then the mounting body 140 is welded to the covering 130 and the yoke plate 200 respectively to facilitate the assembly of the yoke plate 200 and the frame piece 100.
[0079] See Figures 5 to 10 In one embodiment, the covering 130 includes an annular connecting body 131 and an annular covering body 132. The connecting body 131 is disposed on the side of the covering body 132 facing the insulating cover 300 and is welded to the end of the insulating cover 300 facing the yoke plate 200. The covering body 132 surrounds the periphery of the yoke plate 200, and the side of the covering body 132 facing away from the insulating cover 300 is connected to the mounting body 140. Figure 9 for Figure 8 The enlarged view of the frame 100 at point D is shown. Figure 10 for Figure 8 A magnified view of the frame 100 at point E.
[0080] Both the connecting body 131 and the covering body 132 are arranged in a ring shape. The connecting body 131 is located above the covering body 132 and extends toward the insulating cover 300. The top of the connecting body 131 is welded to the bottom of the insulating cover 300 to realize the connection between the frame 100 and the insulating cover 300.
[0081] The covering body 132 surrounds the periphery of the yoke plate 200 and extends toward the back of the yoke plate 200, so that the end of the covering body 132 away from the insulating cover 300 is connected to the mounting body 140. In this way, after the covering body 132 surrounds the periphery of the yoke plate 200, it can be welded to the edge of the mounting body 140 and the mounting surface 210, thereby realizing the welded connection between the frame piece 100 and the yoke plate 200.
[0082] In one embodiment, the connecting body 131 and the covering body 132 are an integral structure. This reduces the number of parts in the frame piece 100, reduces assembly steps, and facilitates the assembly and forming of the frame piece 100. Of course, in other embodiments of this application, the connecting body 131 and the covering body 132 can also be separately arranged and connected by welding. After the connecting body 131 and the covering body 132 are separately arranged, it is convenient to form and process the connecting body 131 and the covering body 132.
[0083] See Figures 3 to 10 In one embodiment, the covering body 132 further includes a first support body 1321 and a second support body 1322. The first support body 1321 is disposed on the side of the yoke plate 200 facing the insulating cover 300 and is connected to the connecting body 131. The second support body 1322 is disposed around the periphery of the yoke plate 200. The side of the second support body 1322 facing the insulating cover 300 is connected to the first support body 1321, and the side of the second support body 1322 away from the insulating cover 300 is connected to the mounting body 140.
[0084] Both the first support body 1321 and the second support body 1322 are arranged in a ring. The second support body 1322 surrounds the periphery of the yoke plate 200. The top of the second support body 1322 is connected to the first support body 1321. The first support body 1321 is also connected to the connecting body 131. The bottom of the second support body 1322 is connected to the mounting body 140.
[0085] In this way, the first support body 1321 and the mounting body 140 can be located on both sides of the height direction of the yoke plate 200 to position the yoke plate 200 in the frame piece 100 and prevent the position of the yoke plate 200 from shifting relative to the position of the frame piece 100.
[0086] Meanwhile, since the dimensions of the yoke plate 200 in the length and width directions are larger than those of the insulating cover 300, after the connecting body 131 is welded to the insulating cover 300, there is a certain gap between the connecting body 131 and the second support body 1322. The connecting body 131 can be connected to the second support body 1322 through the first support body 1321 to ensure the sealing of the inner cavity 310 of the insulating cover 300.
[0087] See Figures 3 to 10 In one embodiment of this application, the first support body 1321 and the mounting body 140 extend toward the central region, and the second support body 1322 extends along the height direction and connects the first support body 1321 and the mounting body 140. The second support body 1322 has a certain dimension along the height direction to surround the periphery of the yoke plate 200.
[0088] The first support body 1321 and the mounting body 140 extend inward in both length and width directions (in the direction of the internal cavity of the frame 100), similar to the flange structure inside the second support body 1322. In this way, the first support body 1321 can fit against the upper surface of the yoke plate 200, and the mounting body 140 can fit against the mounting surface 210 on the back of the yoke plate 200.
[0089] In another embodiment of this application, the first support body 1321 is inclined, the second support body 1322 extends along the height direction, and the mounting body 140 extends toward the central region. The second support body 1322 has a certain dimension along the height direction to surround the periphery of the yoke plate 200.
[0090] The mounting body 140 extends inward in both length and width directions, similar to the flange structure inside the second support body 1322, to fit against the mounting surface 210 on the back of the yoke plate 200. The first support body 1321 is inclined and forms a hollow frustum-shaped structure to connect the second support body 1322 and the connecting body 131.
[0091] Of course, in other embodiments of this application, the covering body 132 may also be a hollow column or other shape, as long as it can connect the mounting body 140 and the connecting body 131, so that the mounting body 140 is connected to the mounting surface 210 on the back of the yoke plate 200.
[0092] See Figures 5 to 10 In one embodiment, the connecting body 131, the first support body 1321, the second support body 1322, and the mounting body 140 are connected by a bend. That is, the connecting body 131, the first support body 1321, the second support body 1322, and the mounting body 140 are connected at right angles. Of course, in other embodiments of this application, the connecting body 131, the first support body 1321, the second support body 1322, and the mounting body 140 may also be connected by a rounded transition.
[0093] In one embodiment of this application, the first support body 1321 and the second support body 1322 are separately disposed and connected by welding. The second support body 1322 and the mounting body 140 are also separately disposed and connected by welding. That is, the first support body 1321, the second support body 1322, and the mounting body 140 are all individual parts and are connected by welding to facilitate the assembly between the frame piece 100 and the yoke plate 200.
[0094] In another embodiment of this application, the first support body 1321 and the second support body 1322 are integrated, while the second support body 1322 and the mounting body 140 are separate components connected by welding. The first support body 1321 and the second support body 1322 are an integrated structure, while the mounting body 140 is a separate component connected by welding to facilitate the assembly between the frame piece 100 and the yoke plate 200.
[0095] In another embodiment of this application, the first support body 1321 and the second support body 1322 are separately disposed and connected by welding. The second support body 1322 and the mounting body 140 are integral. The second support body 1322 and the mounting body 140 are integral structures, while the first support body 1321 is a separate part. The two are connected by welding to facilitate the assembly between the frame piece 100 and the yoke plate 200.
[0096] In one embodiment, the first support body 1321 and the connecting body 131 are an integral structure. This reduces the number of parts in the frame piece 100, reduces assembly steps, and facilitates the assembly and forming of the frame piece 100. Of course, in other embodiments of this application, the first support body 1321 and the connecting body 131 can also be separately provided and connected by welding, which facilitates forming and processing.
[0097] See Figures 3 to 10 In one embodiment, the contact dimension along the length direction between the frame piece 100 and the edge of the mounting surface 210 is 1 / 30 to 1 / 8 of the length of the yoke plate 200. It is understood that the mounting body 140 has certain dimensions in both the length and width directions, so that the mounting body 140 is arranged around the edge of the mounting surface 210.
[0098] The contact dimension along the length of the edge of the frame plate 100 and the mounting body 140 is the length dimension of the side of the mounting body 140 in the length direction, which is 1 / 30 to 1 / 8 of the length of the yoke plate 200. In this way, the contact area between the mounting body 140 and the yoke plate 200 can be guaranteed, ensuring a reliable connection between the frame plate 100 and the yoke plate 200, while not excessively increasing the weight of the sealing structure 10.
[0099] This application only defines the dimensions of the mounting body 140 along the length direction. The dimensions of the mounting body 140 on the side in the width direction can be equal to the dimensions of the mounting body 140 on the side in the length direction, which will not be described here.
[0100] See Figures 3 to 10In one embodiment, the welding length between the frame piece 100 and the yoke plate 200 is less than or equal to the contact dimension between the frame piece 100 and the mounting surface 210 along the length direction. That is, the dimension of the second welded portion 120 along the length direction is less than or equal to the dimension of the side of the mounting body 140 along the length direction.
[0101] In other words, welding can be used at all points where the frame piece 100 contacts the assembly surface 210. Alternatively, welding can be used only at the edge where the frame piece 100 connects to the assembly surface 210, as long as the welding connection is arranged in a circle to ensure the sealing between the frame piece 100 and the yoke plate 200.
[0102] The frame piece 100 of this application can be welded to the edge of the mounting surface 210 on the back of the yoke plate 200. When the insulating cover 300 is subjected to an external force in the direction that separates the frame piece 100 from the yoke plate 200, the yoke plate 200 can hold and compress the frame piece 100 through the mounting surface 210, so that the tensile force borne by the frame piece 100 and the yoke plate 200 is converted into compressive stress. In this way, the frame piece 100 and the yoke plate 200 can withstand greater tensile force, and there is no risk of separation between the frame piece 100 and the yoke plate 200, which enhances the reliability of the connection between the frame piece 100 and the yoke plate 200 and ensures the sealing effect of the sealing structure 10.
[0103] See Figures 3 to 5 This application also provides a sealing structure 10, which includes at least the frame piece 100 as described in any of the above embodiments. By employing the frame piece 100 of the above embodiments, the sealing structure 10 of this application can ensure a sealed connection between the frame piece 100 and the yoke plate 200, while also converting the tensile force borne by the frame piece 100 and the yoke plate 200 into compressive stress. This avoids the risk of separation between the frame piece 100 and the yoke plate 200, enhances the reliability of the connection between the frame piece 100 and the yoke plate 200, and ensures the sealing effect of the sealing structure 10.
[0104] See Figures 1 to 4 This application discloses a high-voltage DC relay 1, including the sealing structure 10 as described in the above embodiments. By employing the sealing structure 10 of the above embodiments, the high-voltage DC relay 1 of this application enhances the reliability of the connection between the frame 100 and the yoke plate 200, ensures the sealing effect of the sealing structure 10, thereby guaranteeing the performance of the high-voltage DC relay 1 and reducing safety hazards.
[0105] 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.
[0106] 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 frame piece, characterized in that, One end of the frame piece (100) is adapted to be welded to the insulating cover (300), and the other end of the frame piece (100) is adapted to be welded to the yoke plate (200); The yoke plate (200) has a mounting surface (210) on the side away from the insulating cover (300), and the frame piece (100) can surround the edge of the yoke plate (200) and extend to the side of the yoke plate (200) away from the insulating cover (300) so that the frame piece (100) is welded to the edge of the mounting surface (210) on the side of the yoke plate (200) away from the insulating cover (300).
2. The frame piece according to claim 1, characterized in that, The frame piece (100) has a first welding part (110) at one end facing the insulating cover (300). The first welding part (110) is arranged in a ring and is welded to the insulating cover (300). And / or, the frame piece (100) has a second weld portion (120) at one end facing the mounting surface (210), the second weld portion (120) being arranged in a ring and welded to the mounting surface (210).
3. The frame piece according to claim 1, characterized in that, The frame piece (100) includes an annular cover (130) and an annular mounting body (140). The cover (130) surrounds the periphery of the yoke plate (200) and extends toward the insulating cover (300) for welding connection with the insulating cover (300). The mounting body (140) is disposed on the side of the cover (130) away from the insulating cover (300) and on the side of the yoke plate (200) away from the insulating cover (300). The mounting body (140) can be welded to the mounting surface (210).
4. The frame piece according to claim 3, characterized in that, The covering (130) includes an annular connecting body (131) and an annular covering body (132). The connecting body (131) is disposed on the side of the covering body (132) facing the insulating cover (300) and is welded to the end of the insulating cover (300) facing the yoke plate (200). The covering body (132) surrounds the periphery of the yoke plate (200), and the side of the covering body (132) facing away from the insulating cover (300) is connected to the mounting body (140).
5. The frame piece according to claim 4, characterized in that, The covering body (132) also includes a first support body (1321) and a second support body (1322). The first support body (1321) is disposed on the side of the yoke plate (200) facing the insulating cover (300) and is connected to the connecting body (131). The second support body (1322) is arranged around the periphery of the yoke plate (200). The side of the second support body (1322) facing the insulating cover (300) is connected to the first support body (1321), and the side of the second support body (1322) away from the insulating cover (300) is connected to the mounting body (140).
6. The frame piece according to claim 5, characterized in that, The first support body (1321) and the second support body (1322) are separately disposed and connected by welding. The second support body (1322) and the mounting body (140) are separately disposed and connected by welding. Alternatively, the first support body (1321) and the second support body (1322) are integrated, while the second support body (1322) and the mounting body (140) are separate and connected by welding. Alternatively, the first support body (1321) and the second support body (1322) are separately provided and connected by welding, and the second support body (1322) and the mounting body (140) are integrated; Alternatively, the first supporting body (1321) and the connecting body (131) may be an integral structure or separate structures.
7. The frame piece according to claim 5, characterized in that, The first support body (1321) and the mounting body (140) extend toward the central region, and the second support body (1322) extends along the height direction and connects the first support body (1321) and the mounting body (140). Alternatively, the first support body (1321) is inclined, the second support body (1322) extends along the height direction, and the mounting body (140) extends toward the central region. And / or, the connecting body (131), the first supporting body (1321), the second supporting body (1322) and the mounting body (140) are connected by bending or arc transition.
8. The frame piece according to any one of claims 1 to 7, characterized in that, The contact dimension between the edge of the frame piece (100) and the edge of the mounting surface (210) along the length direction is 1 / 30 to 1 / 8 of the length of the yoke plate (200); And / or, the welding length of the frame piece (100) to the yoke plate (200) is less than or equal to the contact dimension of the frame piece (100) and the assembly surface (210) along the length direction.
9. A sealing structure, characterized in that, It includes at least the frame piece (100) as described in any one of claims 1 to 8; The sealing structure (10) further includes at least an insulating cover (300) and a yoke plate (200), the insulating cover (300) and the yoke plate (200) being located on both sides of the frame piece (100); The yoke plate (200) has a mounting surface (210) on the side away from the insulating cover (300). The frame piece (100) is welded to the insulating cover (300) and surrounds the periphery of the yoke plate (200). The frame piece (100) can be welded to the edge of the mounting surface (210) on the side of the yoke plate (200) away from the insulating cover (300).
10. A high-voltage DC relay, characterized in that, Includes the sealing structure (10) as described in claim 9.