Contact mounting structure and relay

Abstract

The application relates to a contact mounting structure and a relay, which comprises a yoke plate, a frame plate, and an auxiliary contact assembly. The frame plate is arranged on the upper surface of the yoke plate in the longitudinal direction of the contact mounting structure and is provided with a connecting hole. The auxiliary contact assembly is installed in the connecting hole. In one aspect, the auxiliary contact assembly is installed on the frame plate instead of the yoke plate. Since the space above the frame plate is wide and sufficient, the difficulty of installing the auxiliary contact assembly and selecting the opening position of the connecting hole is smaller, and the auxiliary contact assembly is not prone to installation interference with surrounding components, so that the structural arrangement difficulty and cost of the auxiliary contact assembly can be greatly reduced. In another aspect, the auxiliary contact assembly is installed in the connecting hole of the frame plate, the yoke plate is not opened, the structural integrity of the yoke plate is ensured, the sealing reliability of the yoke plate to the protection medium can be ensured, and the safety hazard of protection medium leakage caused by poor sealing is well eliminated.

Description

Technical Field

[0001] This application relates to the technical field of electrical control devices, and in particular to a contact mounting structure and a relay. Background Technology

[0002] A relay is an electronically controlled device that uses the magnetic field generated by the energized coil assembly to drive the push rod assembly, causing the moving and stationary contacts to close, thereby controlling the circuit. It plays a role in automatic adjustment, safety protection, and circuit switching in the circuit.

[0003] In traditional technology, relays also include auxiliary moving springs and auxiliary contacts. These contacts make contact with or separate from the moving contact to detect the continuity between the moving and stationary contacts. The auxiliary contacts are typically welded into mounting holes in the yoke plate. This method of welding the auxiliary contacts to the yoke plate not only results in a complex structure but also affects the sealing performance of the yoke plate. Utility Model Content

[0004] Therefore, it is necessary to provide a contact mounting structure and relay to address the problems of high difficulty and cost in arranging traditional technical structures and poor sealing reliability.

[0005] A first aspect of this application provides a contact mounting structure, comprising:

[0006] Yoke plate;

[0007] A frame plate, wherein the frame plate is stacked longitudinally along the contact mounting structure on the upper surface of the yoke plate, and the frame plate is provided with a connecting hole; and

[0008] An auxiliary contact assembly is mounted in the connection hole and is used to electrically connect or disconnect with the auxiliary moving reed of the relay.

[0009] In this contact mounting structure, the yoke plate serves as the mounting base, allowing the frame pieces to be stacked longitudinally onto the upper surface of the yoke plate. The frame pieces have connecting holes, enabling the auxiliary contact assembly to be inserted and installed within these holes. This allows the frame pieces to load and fix the auxiliary contact assembly, enabling it to electrically connect or disconnect with the relay's auxiliary moving spring. Compared to traditional technologies, firstly, mounting the auxiliary contact assembly onto the frame piece instead of the yoke plate provides more space above the frame piece, making installation and hole selection easier and reducing the likelihood of interference with surrounding components. This significantly reduces the complexity and cost of the auxiliary contact assembly's layout. Secondly, mounting the auxiliary contact assembly into the connecting holes of the frame piece avoids drilling holes in the yoke plate, ensuring its structural integrity and reliable sealing of the protective medium. This effectively eliminates the safety hazard of leakage due to poor sealing.

[0010] The technical solution of this application will be further described below:

[0011] In one embodiment, the auxiliary contact assembly includes a lead-out terminal and an insulator, the lead-out terminal being hermetically inserted into the insulator, and the insulator being hermetically mounted in the connection hole.

[0012] In one embodiment, the insulator is welded to the wall of the connecting hole.

[0013] In one embodiment, the wall of the connecting hole extends away from the yoke plate to form an annular protrusion, the insulator is welded to the upper end face of the annular protrusion, and the annular protrusion is deformable to absorb the welding stress of the insulator and the annular protrusion.

[0014] In one embodiment, the thickness of the frame piece is less than the thickness of the yoke plate.

[0015] In one embodiment, the outer peripheral wall of the lead-out end protrudes to form a positioning protrusion, the positioning protrusion being located on the side of the insulator away from the frame, and the positioning protrusion overlapping the insulator.

[0016] In one embodiment, the lead-out end has a first connecting portion that protrudes in a direction away from the frame piece;

[0017] The contact mounting structure also includes a lead-out member, one end of which is connected to the first connecting part, and the other end of which can be electrically connected to an external circuit.

[0018] In one embodiment, the contact mounting structure further includes a plastic protective component, which is integrally injection molded with the lead-out component. The lead-out component is disposed within the plastic protective component, and both ends of the lead-out component protrude from the surface of the plastic protective component.

[0019] In one embodiment, the yoke plate and the frame are arranged at intervals to form a travel space, the travel space being used to accommodate a movable auxiliary spring.

[0020] The lead-out end also includes a second connecting part, one end of which is connected to the first connecting part, and the other end of which extends toward the yoke plate and into the stroke space for contacting or separating from the auxiliary moving spring.

[0021] In one embodiment, the edge of the end face of the second connecting portion that contacts the auxiliary moving spring is provided with a curved transition.

[0022] In one embodiment, the central region of the yoke plate is recessed to form an extension groove in a direction away from the frame piece, and the bottom wall of the extension groove is spaced apart from the frame piece to form the travel space.

[0023] In one embodiment, the frame is provided with an outwardly extending mounting portion, and the auxiliary contact assembly is mounted on the mounting portion.

[0024] In one embodiment, the mounting part is a mounting arm protruding from the frame piece, and the connecting hole is provided on the mounting arm.

[0025] In one embodiment, the frame includes a main body and an annular mating part, the annular mating part surrounding the outer periphery of the main body, and the mounting part protruding outward from the main body.

[0026] In one embodiment,

[0027] In one embodiment, the frame includes a main body and an annular mating part. The annular mating part surrounds the outer periphery of the main body. The main body has a through hole that extends vertically. The mounting part is a partition plate that divides the through hole into a first hole and a second hole. The connecting hole is disposed on the partition plate.

[0028] In one embodiment, the wall of the first hole protrudes in a direction away from the yoke plate to form a first annular extension; and / or, the wall of the second hole protrudes in a direction away from the yoke plate to form a second annular extension.

[0029] In one embodiment, the yoke plate includes an extended portion and an annular plate portion connected together, the annular plate portion being sealed and welded to the annular mating portion.

[0030] In one embodiment, the annular plate portion is a plate-shaped member with a through opening in the middle, and the extension portion is a concave member with an extension groove. The extension portion is connected to the annular plate portion in such a way that the extension groove corresponds to and communicates with the through opening.

[0031] In one embodiment, the annular plate portion and the extension portion are an integral structure; or, the annular plate portion is sealed and welded to the extension portion.

[0032] In one embodiment, the extension portion includes a carrier plate portion and a surrounding plate portion, the carrier plate portion and the annular plate portion being spaced apart, the surrounding plate portion being connected between the carrier plate portion and the annular plate portion, and the annular plate portion surrounding the outer periphery of the surrounding plate portion; wherein, the carrier plate portion and the surrounding plate portion cooperate to form the extension groove.

[0033] A second aspect of this application also proposes a relay comprising the contact mounting structure as described in any of the above embodiments.

[0034] In one embodiment, the relay further includes a housing assembly and a moving contact assembly. The housing assembly has a contact cavity formed inside, and the moving contact assembly is located inside the contact cavity. The moving contact assembly and the auxiliary contact assembly can move up and down within the contact cavity without interference. Attached Figure Description

[0035] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a structural diagram of a relay according to one embodiment.

[0038] Figure 2 for Figure 1 A schematic diagram of the internal structure of a relay.

[0039] Figure 3 for Figure 2 A simplified structural diagram.

[0040] Figure 4 for Figure 3 A schematic diagram of the main structure.

[0041] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure at point AA.

[0042] Figure 6 This is an assembly diagram of the lead-out end and the frame plate installation in one embodiment.

[0043] Figure 7 for Figure 6 A structural diagram from another perspective.

[0044] Figure 8 This is a schematic diagram of the frame structure of one embodiment.

[0045] Figure 9 This is a schematic diagram of the structure of the yoke plate in one embodiment.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100. Relay; 10. Contact mounting structure; 10a. Auxiliary contact assembly; 11. Yoke plate; 111. Extension section; 1111. Extension groove; 1112. Carrier plate section; 1113. Surrounding plate section; 112. Annular plate section; 12. Frame plate; 121. Connecting hole; 1211. Annular protrusion; 122. Main body section; 1221. Through hole; 1221a. First hole; 1221b. Second hole; 1221c. 1221d, First annular extension; 1221d, Second annular extension; 123, Annular mating part; 124, Partition; 13, Lead-out end; 131, Positioning protrusion; 132, First connecting part; 133, Second connecting part; 1331, Curved surface transition; 14, Insulator; 15, Lead-out part; 15a, Plastic protective part; 16, Stroke space; 16a, Auxiliary moving spring; 20, Insulating cover; 30, Cover assembly; 31, Contact cavity. Detailed Implementation

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] See Figure 1 The relay 100 described in one embodiment of this application can be any of the following: a high-voltage DC relay, a high-voltage AC relay, etc., and can be flexibly selected according to actual needs.

[0055] Please continue reading. Figures 2 to 6 ,as well as Figure 8 For example, the relay 100 is provided with a contact mounting structure 10, which includes a yoke plate 11, a frame plate 12, and an auxiliary contact assembly 10a. The frame plate 12 is stacked on the upper surface of the yoke plate 11 along the longitudinal direction of the contact mounting structure 10, and the frame plate 12 has a connection hole 121; the auxiliary contact assembly 10a is installed in the connection hole 121, and the auxiliary contact assembly 10a is used to electrically connect or disconnect with the auxiliary moving spring 16a of the relay.

[0056] Optionally, the longitudinal direction of the contact mounting structure 10 specifically refers to the height direction of the contact mounting structure 10, that is, it is consistent with the height direction of the relay 100. For example, for Figure 2 and Figure 5 The direction of arrow S in the diagram.

[0057] In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: In the contact mounting structure 10 of this solution, the yoke plate 11 serves as the mounting base, so that the frame piece 12 can be stacked and mounted on the yoke plate 11 along the longitudinal direction of the contact mounting structure 10. The frame piece 12 is provided with a connection hole 121, so that the auxiliary contact assembly 10a can be installed through the connection hole 121, thereby realizing the frame piece 12 to load and fix the auxiliary contact assembly 10a, so that the auxiliary contact assembly 10a can be electrically connected or disconnected with the auxiliary moving spring 16a of the relay 100.

[0058] Compared to traditional technologies, firstly, by mounting the auxiliary contact assembly 10a onto the frame plate 12 instead of onto the yoke plate 11, the space above the frame plate 12, which is far from the yoke plate 11, is spacious and ample. Therefore, the installation of the auxiliary contact assembly 10a and the selection of the opening position of the connection hole 121 are much easier, reducing the likelihood of installation interference with surrounding components and significantly lowering the structural layout difficulty and cost of the auxiliary contact assembly 10a. Secondly, by mounting the auxiliary contact assembly 10a into the connection hole 121 of the frame plate 12, openings are avoided in the yoke plate 11, ensuring the structural integrity of the yoke plate 11 and guaranteeing its stability. The sealing reliability of the protective medium is well eliminated, thus eliminating the safety hazard of leakage due to poor sealing. Furthermore, in related technologies, when the auxiliary contact assembly 10a is installed on the yoke plate 11 and led outward, the lead-out structure needs to consider safety distance and component forming issues, which will occupy a large winding space, resulting in insufficient winding space or requiring an increase in the height of the relay 100 to meet the coil layout requirements. However, in this solution, the auxiliary contact assembly 10a is installed on the frame plate 12, which can obtain more ample winding space for coil arrangement, thereby eliminating the need to increase the height of the relay 100 and facilitating the miniaturization design of the relay 100.

[0059] Based on the above embodiments, the auxiliary contact assembly 10a further includes a lead-out end 13 and an insulator 14, with the lead-out end 13 being sealed and inserted into the insulator 14, and the insulator 14 being sealed and installed in the connection hole 121.

[0060] In this application, to achieve sufficient structural strength and facilitate welding and installation, both the yoke plate 11 and the frame plate 12 are made of metal. However, the lead-out terminal 13 is energized during operation, posing a risk of electric shock and damage to other components due to the potential for electrical conduction from the lead-out terminal 13 to the frame plate 12 and yoke plate 11. To address this, the insulator 14 is first sealed and installed into the connection hole 121, and then the lead-out terminal 13 is sealed and inserted into the insulator 14. This ensures that the insulator 14 provides insulation and protection between the lead-out terminal 13 and the frame plate 12, preventing dangerous accidents such as electric shock. It also ensures a reliable and sealed connection between the lead-out terminal 13 and the frame plate 12, preventing the installation hole from becoming a potential leakage point for the protective medium.

[0061] Please continue reading. Figure 3 and Figure 4 It should be noted that an insulating cover 20 is usually installed above the frame plate 12. The insulating cover 20 contains a moving contact, which is generally a high-voltage connector. Therefore, to achieve insulation protection, a protective medium is filled inside the insulating cover 20. This protective medium can be, but is not limited to, nitrogen. The inner cavity of the insulating cover 20 is connected to the gap between the yoke plate 11 and the frame plate 12, so the protective medium also fills the gap between the yoke plate 11 and the frame plate 12.

[0062] Optionally, in one embodiment, the insulator 14 is welded to the wall of the connecting hole 121. Using welding to assemble and fix the insulator 14 to the frame 12 is more visually appealing than threaded connections, snap-fit ​​connections, or adhesive connections. It not only provides higher connection strength, allowing the insulator 14 to provide more reliable and stable support for the lead-out end 13, but also achieves better sealing performance, more effectively eliminating the potential leakage hazard of the protective medium.

[0063] For example, in this application, the connecting hole 121 is a circular hole, so the insulator 14 adopts a cylindrical structure that matches the shape and size of the circular hole. Of course, in other optional embodiments, the connecting hole 121 can also be square, triangular, or other shapes. In this case, the insulator 14 can adopt a structural design that matches the shape of the connecting hole 121.

[0064] Optionally, the insulator 14 can be any material and type, including but not limited to ceramics and glass, and can be flexibly selected according to actual needs. No specific limitation is made here.

[0065] Please continue reading. Figure 5 and Figure 8 Furthermore, based on the above embodiment, the wall of the connecting hole 121 extends away from the yoke plate 11 to form an annular protrusion 1211. The insulator 14 is welded to the upper end face of the annular protrusion 1211, and the annular protrusion 1211 can deform to absorb the welding stress of the insulator 14 and the annular protrusion 1211. Thus, the annular protrusion 1211 has a certain protrusion height, so that the outer peripheral wall of the annular protrusion 1211 provides a larger welding area for welding and fixing the annular protrusion 1211 and the insulator 14, thereby helping to improve the welding firmness of the insulator 14 and the frame plate 12; and, compared with welding the insulator 14 on the flat surface of the frame plate 12, the welding head of the welding gun has more space for welding operations, significantly reducing the welding difficulty and enhancing the machinability of the insulator 14 and the frame plate 12. In addition, the annular protrusion 1211 can also absorb the welding stress during the welding process of the insulator 14 and the annular protrusion 1211 through its own deformation, so as to improve the welding quality and eliminate quality defects such as welding cracks.

[0066] Furthermore, in this application, the thickness of the frame plate 12 is less than the thickness of the yoke plate 11. Therefore, since the thickness of the frame plate 12 is designed to be less than the thickness of the yoke plate 11, the welding time between the frame plate 12 and the insulator 14 can be shorter, and the welding intensity can be lower, thereby effectively protecting the insulator 14 from cracking and damage due to excessive welding temperature and excessive welding stress.

[0067] Please continue reading. Figure 5Furthermore, to facilitate the installation and positioning of the lead-out end 13 on the insulator 14 during installation, in one embodiment, a positioning protrusion 131 is formed on the outer peripheral wall of the lead-out end 13. The positioning protrusion 131 is located on the side of the insulator 14 away from the frame plate 12, and overlaps with the insulator 14. Therefore, during installation, the lower end of the lead-out end 13 is aligned and inserted into the mounting hole of the insulator 14, and then the lead-out end 13 is continuously pressed downwards. The lead-out end 13 slides along the hole until the lower surface of the positioning protrusion 131 abuts against the upper surface of the insulator 14 away from the frame plate 12. This achieves the installation and positioning of the lead-out end 13, ensuring that the lead-out end 13 stops precisely in the preset installation position, and ensuring that the lead-out end 13 can subsequently effectively contact or separate from the auxiliary moving spring 16a.

[0068] Optionally, the mounting hole on the insulator 14 is a circular hole, and the corresponding lead-out end 13 is a round rod. This eliminates the need for a specific posture and angle for the lead-out end 13 to be inserted into the hole during installation, reducing the installation difficulty of the lead-out end 13. However, it should be noted that in other optional embodiments, the mounting hole can also be any of the following: a square hole, an elliptical hole, etc. In this case, the lead-out end 13 can adopt a structural design that matches the shape of the mounting hole. The specific choice can be made flexibly according to actual needs, and will not be elaborated further here.

[0069] Furthermore, in yet another embodiment, the lead-out end 13 has a first connecting portion 132 that protrudes in a direction away from the frame piece 12.

[0070] Please continue reading. Figure 5 The contact mounting structure 10 also includes a lead-out member 15, one end of which is connected to the first connecting part 132, and the other end of which can be electrically connected to an external circuit.

[0071] Therefore, the lead-out terminal 13 can be electrically connected to the lead-out member 15 through its first connection portion 132, and then electrically connected to the external circuit through the lead-out member 15, so that the lead-out terminal 13 can obtain the detection function.

[0072] Optionally, the lead-out piece 15, the lead-out terminal 13, and the external circuit are all connected by welding, which provides high connection strength, good durability, and prevents loosening and separation that could affect the detection performance of the lead-out terminal 13.

[0073] During installation, the lead-out part 15 is arranged close to the surface of the frame piece 12, which can more effectively save internal space of the relay 100, improve the utilization rate of internal space of the relay 100, and further help the relay 100 to achieve miniaturization design.

[0074] Please continue reading. Figure 2To prevent the exposed metal lead-out member 15 from posing risks such as short circuits and electric shocks, in one embodiment, the contact mounting structure 10 further includes a plastic protective member 15a. The plastic protective member 15a and the lead-out member 15 are integrally injection molded, with the lead-out member 15 housed within the plastic protective member 15, and both ends of the lead-out member 15 protruding from the surface of the plastic protective member 15a. Therefore, the plastic protective member 15a encloses the central main body of the lead-out member 15, isolating it from the external environment and effectively eliminating the aforementioned potential risks. Simultaneously, the two ends of the lead-out member 15 extend beyond the plastic protective member 15a to facilitate connection with the first connecting portion 132 and external circuitry.

[0075] The plastic protective component 15a and the lead-out component 15 are integrally injection molded into a single structure, which makes the plastic protective component 15a and the lead-out component 15 have excellent bonding performance. At the same time, it reduces the number of parts and installation steps, which helps to improve the processing efficiency of the relay 100.

[0076] Please continue reading. Figure 5 Furthermore, based on any of the above embodiments, the yoke plate 11 and the frame plate 12 are arranged at intervals to form a travel space 16, which is used to accommodate a movable auxiliary spring plate 16a.

[0077] The auxiliary moving spring 16a is typically connected to the push rod assembly of the relay 100. Driven by the coil assembly, the push rod assembly reciprocates longitudinally along the contact structure, causing the push rod to synchronously drive the auxiliary moving spring 16a to reciprocate longitudinally. This allows the auxiliary moving spring 16a to contact or separate from the lead-out terminal 13, achieving the contact detection function. Therefore, the stroke space 16, formed by the spaced cooperation between the yoke plate 11 and the frame plate 12, provides the necessary movement space for the auxiliary moving spring 16a.

[0078] Please continue reading. Figure 5 and Figure 7 Furthermore, the lead-out end 13 also includes a second connecting part 133. One end of the second connecting part 133 passes through the mounting hole and is connected to the first connecting part 132. The other end of the second connecting part 133 extends toward the yoke plate 11 and into the stroke space 16 for contacting or separating from the auxiliary moving spring 16a.

[0079] Therefore, the second connecting part 133 of the lead-out end 13 extends into the stroke space 16, thereby facilitating contact or separation with the auxiliary moving spring 16a.

[0080] Understandably, when the push rod assembly drives the auxiliary moving spring 16a to contact or separate from the lead-out end 13, it will be subjected to the impact and squeezing action of the lead-out end 13. Over time, the auxiliary moving spring 16a may deform or even break due to excessive impact load and stress concentration. In this regard, in one embodiment, the edge of the end face of the second connecting part 133 that contacts the auxiliary moving spring 16a is provided with a curved transition 1331.

[0081] Please continue reading. Figure 5 and Figure 7 Therefore, the curved transition 1331 formed by the edge of the second connecting part 133 abuts against the auxiliary moving spring 16a, which can effectively reduce stress concentration and impact load, better protect the structural safety of the auxiliary moving spring 16a, and improve the durability of the auxiliary moving spring 16a. In addition, the curved transition 1331 structure of the second connecting part 133 can avoid the generation of local high voltage due to charge concentration, thereby reducing the generation of electric arc at this location.

[0082] Specifically, the curved surface transition 1331 can be, but is not limited to, a spherical surface, etc., and can be flexibly selected according to actual needs.

[0083] Furthermore, based on any of the above embodiments, the frame 12 is provided with an outwardly extending mounting portion (not shown in the figure), on which the auxiliary contact assembly 10a is mounted. Therefore, the auxiliary contact assembly 10a can be mounted and fixed via the mounting portion.

[0084] More specifically, the mounting part is a mounting arm that protrudes from the frame 12, and the connecting hole 121 is provided on the mounting arm. The structure of the mounting arm formed by protrusion is simple, easy to process and form, and the size of the mounting arm is controllable, avoiding occupying too much installation space inside the relay 100.

[0085] For example, in one embodiment, the frame piece 12 includes a main body portion 122 and an annular mating portion 123, the annular mating portion 123 surrounding the outer periphery of the main body portion 122, and the main body portion 122 is provided with a mounting portion protruding outward. The main body portion 122 provides ample space for mounting the mounting portion to meet the needs of mounting the mounting portion.

[0086] Please continue reading. Figure 5 and Figure 9 Furthermore, in another embodiment, the yoke plate 11 includes an extension portion 111, which is recessed in a direction away from the frame piece 12 to form an extension groove 1111. The bottom wall of the extension groove 1111 is spaced apart from the frame piece 12 to form a travel space 16.

[0087] The increased depth of the extension groove 1111 increases the distance between the frame piece 12 and the bottom wall of the groove, thereby more effectively increasing the size of the stroke space 16 formed by the gap between the bottom wall of the extension groove 1111 and the frame piece 12. This provides more ample stroke space 16 for the auxiliary moving spring 16a, preventing the auxiliary moving spring 16a from being unable to work reliably and effectively due to the obstruction of the frame piece 12.

[0088] Please continue reading. Figure 5 , Figure 6 , Figure 8 and Figure 9 Furthermore, based on the above embodiments, the yoke plate 11 further includes an annular plate portion 112 surrounding the outer periphery of the extension portion 111. The frame piece 12 includes a main body portion 122 and an annular mating portion 123 surrounding the outer periphery of the main body portion 122. The annular mating portion 123 is sealed and welded to the annular plate portion 112. Therefore, by welding the annular mating portion 123 to the annular plate portion 112, the frame piece 12 and the yoke plate 11 are welded and assembled and fixed. The large welding area can improve the connection strength and reliability between the frame piece 12 and the yoke plate 11, while also ensuring the sealing between the frame piece 12 and the yoke plate 11, preventing leakage of the internal protective medium between the two mating surfaces.

[0089] The connecting hole 121 is formed on any one of the main body portion 122, the annular mating portion 123, or the joint portion of the main body portion 122 and the annular mating portion 123. Therefore, the main body portion 122, the annular mating portion 123, or the joint portion of the main body portion 122 and the annular mating portion 123 are all provided with a portion for machining to form the connecting hole 121, which can be flexibly selected according to actual needs to meet the flexibility of machining and the hole position setting requirements of different types of relays 100.

[0090] Please continue reading. Figure 8 Furthermore, in another embodiment, the main body 122 has a through hole 1221 extending vertically, and the mounting part is a partition 124. The through hole 1221 has a first hole wall and a second hole wall arranged opposite to each other. The part of the first hole wall and the part of the second hole wall are connected by the partition 124, so that the partition 124 divides the through hole 1221 into a first hole 1221a and a second hole 1221b.

[0091] On the one hand, the through hole 1221 and the extension groove 1111 are aligned longitudinally in the contact mounting structure 10, so the partition 124 can be spaced apart from the bottom wall of the extension groove 1111 to define the travel space 16; on the other hand, by using the partition 124 to span between the first hole wall and the second hole wall, the through hole 1221 can be divided into a first hole 1221a and a second hole 1221b with smaller diameters. At this time, the first hole 1221a and the second hole 1221b can be assembled with the smaller insulating cover 20 respectively. Compared with the use of a single insulating cover 20 with a larger size, the smaller insulating cover 20 has the advantages of easy molding, lower processing cost and higher precision. In addition, the inner cavities of the two insulating covers 20 are isolated from each other and can work independently, so that the moving contacts installed in the two insulating covers 20 have less mutual influence, further improving the insulation capability of the insulating cover 20.

[0092] The connection hole 121 is formed on any one of the partition 124, the annular mating portion 123, or the joint between the partition 124 and the annular mating portion 123. For example, in this application, the connection hole 121 is provided on the partition 124. This allows the connection hole 121 to be used to install the auxiliary contact assembly 10a, while avoiding interference with the normal assembly of the frame 12 and the insulating cover 20.

[0093] Please continue reading. Figure 3 , Figure 4 and Figure 8 Furthermore, based on the above embodiments, the wall of the first hole 1221a protrudes in the direction away from the yoke plate 11 to form a first annular extension 1221c; and / or, the wall of the second hole 1221b protrudes in the direction away from the yoke plate 11 to form a second annular extension 1221d.

[0094] Optionally, in this application, the first annular extension 1221c on the wall of the first hole 1221a and the second annular extension 1221d on the wall of the second hole 1221b coexist. In this case, the first annular extension 1221c and the second annular extension 1221d provide a larger welding area required for welding with the insulating cover 20, which helps to improve the welding firmness with the insulating cover 20 and reduce the difficulty of welding processing.

[0095] Please continue reading. Figure 5 , Figure 6 , Figure 8 and Figure 9 In an optional embodiment of this application, the yoke plate 11 includes an extended portion 111 and an annular plate portion 112 connected to each other, and the annular plate portion 112 is sealed and welded to the annular mating portion 123. This achieves a welded and sealed connection between the yoke plate 11 and the frame piece 12, ensuring the overall sealing performance of the contact mounting structure 10, while improving the connection strength between the yoke plate 11 and the frame piece 12.

[0096] For example, the annular plate portion 112 is a plate-shaped member with a through opening in the middle, and the extension portion 111 is a concave member with an extension groove 1111. The extension portion 111 is connected to the annular plate portion 112 in such a way that the extension groove 1111 corresponds to and communicates with the through opening.

[0097] Therefore, after the extension portion 111 is connected to the annular plate portion 112, the cavity of the extension portion 111, which has a concave structure, can be formed into an extension groove 1111, making the forming method of the extension groove 1111 simple. Furthermore, at this time, the extension groove 1111 can automatically communicate with the contact cavity inside the insulating cover 20 through the through opening of the annular plate portion 112, providing more ample longitudinal movement space for the base of the push rod assembly.

[0098] For example, the annular plate portion 112 and the extension portion 111 are an integral structure; or, the annular plate portion 112 is sealed and welded to the extension portion 111. This ensures the connection strength and sealing reliability between the annular plate portion 112 and the extension portion 111.

[0099] Please continue reading. Figure 5 and Figure 9 The extension portion 111 includes a carrier plate portion 1112 and a surrounding plate portion 1113. The carrier plate portion 1112 and the annular plate portion 112 are spaced apart. The surrounding plate portion 1113 is connected between the carrier plate portion 1112 and the annular plate portion 112, and the annular plate portion 112 surrounds the outer periphery of the surrounding plate portion 1113. The carrier plate portion 1112 and the surrounding plate portion 1113 cooperate to form an extension groove 1111.

[0100] For example, the enclosure plate 1113 is a rectangular ring plate. After being installed on the carrier plate 1112, it can cooperate with the carrier plate 1112 to form an extension groove 1111, which makes the forming method and structure of the extension groove 1111 simple.

[0101] In other words, it can be understood that one side opening of the enclosure plate portion 1113 is covered by the carrier plate portion 1112, while the other side opening forms the slot of the extension groove 1111, which is used for the base 131 to enter and exit the cavity of the extension groove 1111.

[0102] Optionally, the carrier plate portion 1112 and the surrounding plate portion 1113 and / or the surrounding plate portion 1113 and the annular plate portion 112 are integral structures. Therefore, the connection method of the carrier plate portion 1112, the surrounding plate portion 1113 and the annular plate portion 112 can be selected according to the specific product design scheme and performance requirements.

[0103] For example, in this application, the carrier plate portion 1112, the surrounding plate portion 1113, and the annular plate portion 112 are designed as an integrated structure to enable the yoke plate 11 to obtain better overall structural performance, while reducing the number of parts, reducing processing difficulty and cost.

[0104] Please continue reading. Figure 6 and Figure 7 In addition to the above, the relay 100 also includes a housing assembly 30 and a moving contact assembly (not shown in the figure). A contact cavity 31 is formed inside the housing assembly 30, and the moving contact assembly is located within the contact cavity 31. The moving contact assembly and the auxiliary contact assembly 10a can move up and down within the contact cavity 31 without interference. Therefore, in actual use, the contact cavity 31 provides ample space for the moving contact assembly to move up, down, left, and right, thereby avoiding interference between the moving contact assembly and the auxiliary contact assembly 10a.

[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 contact mounting structure (10), characterized in that, include: Yoke plate (11); A frame piece (12) is stacked longitudinally along the contact mounting structure (10) on the upper surface of the yoke plate (11), and the frame piece (12) has a connecting hole (121); and An auxiliary contact assembly (10a) is mounted in the connection hole (121) and is used to electrically connect or disconnect with the auxiliary moving reed (16a) of the relay.

2. The contact mounting structure (10) according to claim 1, characterized in that, The auxiliary contact assembly (10a) includes a lead-out end (13) and an insulator (14), the lead-out end (13) being hermetically inserted into the insulator (14), and the insulator (14) being hermetically installed in the connection hole (121).

3. The contact mounting structure (10) according to claim 2, characterized in that, The insulator (14) is welded and fixed to the wall of the connecting hole (121).

4. The contact mounting structure (10) according to claim 3, characterized in that, The hole wall of the connecting hole (121) extends away from the yoke plate (11) to form an annular protrusion (1211). The insulator (14) is welded to the upper end face of the annular protrusion (1211), and the annular protrusion (1211) can deform to absorb the welding stress of the insulator (14) and the annular protrusion (1211).

5. The contact mounting structure (10) according to claim 4, characterized in that, The thickness of the frame piece (12) is less than the thickness of the yoke plate (11).

6. The contact mounting structure (10) according to claim 2, characterized in that, The outer peripheral wall of the lead-out end (13) has a positioning protrusion (131) which is located on the side of the insulator (14) away from the frame (12) and overlaps with the insulator (14).

7. The contact mounting structure (10) according to claim 2, characterized in that, The lead-out end (13) has a first connecting portion (132) that protrudes in a direction away from the frame piece (12). The contact mounting structure (10) further includes a lead-out member (15), one end of which is connected to the first connecting part (132), and the other end of which can be electrically connected to an external circuit.

8. The contact mounting structure (10) according to claim 7, characterized in that, The contact mounting structure (10) further includes a plastic protective component (15a), which is an integral injection molded structure with the lead-out component (15). The lead-out component (15) is disposed inside the plastic protective component (15a), and both ends of the lead-out component (15) protrude from the surface of the plastic protective component (15a).

9. The contact mounting structure (10) according to claim 7, characterized in that, The yoke plate (11) and the frame plate (12) are arranged at intervals to form a travel space (16), which is used to accommodate a movable auxiliary spring plate (16a). The lead-out end (13) also includes a second connecting part (133), one end of which is connected to the first connecting part (132), and the other end of which extends toward the yoke plate (11) and into the stroke space (16) for contacting or separating from the auxiliary moving spring (16a).

10. The contact mounting structure (10) according to claim 9, characterized in that, The edge of the end face of the second connecting part (133) that is in contact with the auxiliary moving spring (16a) is provided with a curved transition (1331).

11. The contact mounting structure (10) according to claim 9, characterized in that, The central region of the yoke plate (11) is recessed in a direction away from the frame piece (12) to form an extension groove (1111). The bottom wall of the extension groove (1111) is arranged at intervals with the frame piece (12) to form the travel space (16).

12. The contact mounting structure (10) according to claim 1, characterized in that, The frame piece (12) is provided with an outwardly extending mounting portion, and the auxiliary contact assembly (10a) is mounted on the mounting portion.

13. The contact mounting structure (10) according to claim 12, characterized in that, The mounting part is a mounting arm that protrudes from the frame piece (12), and the connecting hole (121) is provided on the mounting arm.

14. The contact mounting structure (10) according to claim 12 or 13, characterized in that, The frame piece (12) includes a main body (122) and an annular mating part (123). The annular mating part (123) surrounds the outer periphery of the main body (122), and the main body (122) is provided with the mounting part protruding outward.

15. The contact mounting structure (10) according to claim 12, characterized in that, The frame piece (12) includes a main body (122) and an annular mating part (123). The annular mating part (123) surrounds the outer periphery of the main body (122). The main body (122) has a through hole (1221) that runs vertically through the body. The mounting part is a partition (124). The partition (124) divides the through hole (1221) into a first hole (1221a) and a second hole (1221b). The connecting hole (121) is provided on the partition (124).

16. The contact mounting structure (10) according to claim 15, characterized in that, The first hole (1221a) has a first annular extension (1221c) protruding from the wall of the hole away from the yoke plate (11). And / or, the hole wall of the second hole (1221b) protrudes in a direction away from the yoke plate (11) to form a second annular extension (1221d).

17. The contact mounting structure (10) according to claim 14 or 15, characterized in that, The yoke plate (11) includes an extended portion (111) and an annular plate portion (112) connected to each other, and the annular plate portion (112) is sealed and welded to the annular mating portion (123).

18. The contact mounting structure (10) according to claim 17, characterized in that, The annular plate portion (112) is a plate-shaped member with a through opening in the middle, and the extension portion (111) is a concave member with an extension groove (1111). The extension portion (111) is connected to the annular plate portion (112) in such a way that the extension groove (1111) corresponds to and communicates with the through opening.

19. The contact mounting structure (10) according to claim 18, characterized in that, The annular plate portion (112) and the extension portion (111) are integral structures; or, the annular plate portion (112) is sealed and welded to the extension portion (111).

20. The contact mounting structure (10) according to claim 18, characterized in that, The extension portion (111) includes a carrier plate portion (1112) and a surrounding plate portion (1113). The carrier plate portion (1112) and the annular plate portion (112) are spaced apart. The surrounding plate portion (1113) is connected between the carrier plate portion (1112) and the annular plate portion (112), and the annular plate portion (112) surrounds the outer periphery of the surrounding plate portion (1113). The carrier plate portion (1112) and the surrounding plate portion (1113) cooperate to form the extension groove (1111).

21. A relay (100), characterized in that, Includes the contact mounting structure (10) as described in any one of claims 1 to 20.

22. The relay (100) according to claim 21, characterized in that, The relay (100) further includes a housing assembly and a moving contact assembly. The housing assembly has a contact cavity inside, and the moving contact assembly is located inside the contact cavity. The moving contact assembly and the auxiliary contact assembly (10a) can move up and down in the contact cavity without interference.

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