relay

Abstract

The application relates to a relay, comprising: a cover assembly, an inside of the cover assembly is formed with a contact cavity, the cover assembly comprises a yoke plate located at the bottom, the yoke plate is concave and formed with an extension groove, the extension groove is communicated with the contact cavity, and the extension groove is configured to expand the longitudinal space size of the contact cavity; and a push rod mechanism comprising a base, the base can be supported on the bottom wall of the extension groove, and the push rod mechanism can drive the base to longitudinally reciprocate in the contact cavity and the extension groove. Compared with the prior art, since the extension groove can expand the longitudinal space size of the contact cavity, the length of the stroke space provided for the longitudinal reciprocating movement of the base is lengthened by the lengthened cavity depth size of the extension groove, and the base requires a larger stroke space for movement, so that the size of the cover assembly does not need to be made larger to make the contact cavity provide a larger height space, the machining difficulty and cost of the cover assembly are reduced, and meanwhile, the smaller size of the cover assembly is also beneficial to improving the machining and forming size precision.

Description

Technical Field

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

[0002] A relay is an electronically controlled device that uses the magnetic field generated by energizing a coil assembly to drive a push rod mechanism, 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, to provide sufficient longitudinal movement space for the push rod mechanism, the height of the insulating cover is usually increased to obtain a larger internal height space. However, when the size of the ceramic insulating cover is increased, it is difficult to guarantee dimensional accuracy, and the processing difficulty and cost also increase accordingly. Utility Model Content

[0004] Therefore, it is necessary to provide a relay that addresses the problems of increased processing difficulty and cost, and reduced dimensional accuracy caused by increasing the size of the insulating cover in traditional technologies.

[0005] A first aspect of this application provides a relay comprising:

[0006] A cover assembly having a contact cavity formed inside, the cover assembly including a yoke plate at the bottom, the yoke plate having a recessed extension groove communicating with the contact cavity, and the extension groove being configured to expand the longitudinal spatial dimension of the contact cavity; and

[0007] A push rod mechanism includes a base that can be supported on the bottom wall of the extension groove, and the push rod mechanism can drive the base to reciprocate longitudinally within the contact cavity and the extension groove.

[0008] In this relay design, a contact cavity is formed inside the housing assembly, and a shaped extension groove is recessed on the yoke plate. The extension groove communicates with the contact cavity, thereby expanding the longitudinal space of the contact cavity. Based on this, a push rod mechanism is assembled with the housing assembly, allowing the base to be supported on the bottom wall of the extension groove. This means that the base, driven by the push rod mechanism, can reciprocate within the longitudinal travel space created by the contact cavity and the extension groove, and can move into the interior of the extension groove to contact its bottom wall. Compared to traditional technologies, because the extension groove expands the longitudinal space of the contact cavity, the increased groove depth provides a longer travel space for the base's longitudinal reciprocating motion, offering a larger travel space required for the base's movement. This eliminates the need to increase the height of the housing assembly to provide a larger height space for the contact cavity, reducing the manufacturing difficulty and cost of the housing assembly. Furthermore, the smaller size of the housing assembly also helps improve its manufacturing and dimensional accuracy.

[0009] The technical solution of this application will be further described below:

[0010] In one embodiment, the orthographic projection of the base along its direction of movement falls completely into the cavity of the extension groove.

[0011] In one embodiment, the extension groove is a rectangular groove, and the base and the sidewall of the extension groove are in clearance fit.

[0012] In one embodiment, the relay further includes an auxiliary moving spring, which is mounted on the base and can be accommodated in the extension groove. The base can drive the auxiliary moving spring to reciprocate longitudinally without interference within the extension groove and / or the contact cavity.

[0013] In one embodiment, the auxiliary moving spring includes a first contact portion and a second contact portion extending from opposite sides of the base. The sidewall of the extension groove is provided with a first clearance recess and a second clearance recess, and the first clearance recess is correspondingly provided with the first contact portion and the second clearance recess is correspondingly provided with the second contact portion.

[0014] In one embodiment, the extension groove has a first groove sidewall and a second groove sidewall disposed opposite to each other. The first groove sidewall has at least two levels of first stepped surfaces along the groove depth direction of the extension groove, and the second groove sidewall has at least two levels of second stepped surfaces along the groove depth direction of the extension groove. The first stepped surfaces and the second stepped surfaces are disposed in a one-to-one correspondence along the transverse direction of the relay. A set of first stepped surfaces and second stepped surfaces at the same groove depth height are used to jointly support the base.

[0015] In one embodiment, the yoke plate includes an annular plate portion and an extension portion. 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 the 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.

[0016] 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.

[0017] 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.

[0018] In one embodiment, the carrier plate portion has a mounting through hole, and the push rod mechanism further includes a push rod connected to the base, the push rod being movably inserted into the mounting through hole.

[0019] In one embodiment, the carrier plate portion and the surrounding plate portion and / or the surrounding plate portion and the annular plate portion are an integral structure.

[0020] In one embodiment, the cover assembly further includes a frame and an insulating cover. The frame is mounted on the yoke plate and located above the yoke plate, and the insulating cover is mounted on the frame and located above the frame. The frame and the insulating cover cooperate to form the contact cavity. The push rod mechanism further includes a movable contact assembly. The movable contact assembly is connected to the base, and the base can drive the movable contact assembly to reciprocate longitudinally within the contact cavity.

[0021] In one embodiment, the frame piece has a through hole running vertically through it, and the frame piece also includes a partition plate that divides the through hole into a first hole and a second hole;

[0022] The partition is spaced apart from the bottom wall of the extension groove to form a movement space for the base.

[0023] In one embodiment, the surface of the partition facing the yoke plate is recessed in a direction away from the yoke plate to form a third clearance recess, which is used to increase the movement space of the base.

[0024] In one embodiment, the relay is a high-voltage DC relay. Attached Figure Description

[0025] 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.

[0026] 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.

[0027] Figure 1 This is a simplified structural diagram of a relay according to one embodiment.

[0028] Figure 2 for Figure 1 A schematic diagram of the main structure of a medium relay.

[0029] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point AA.

[0030] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure at point BB.

[0031] Figure 5 for Figure 1 A schematic diagram of the internal structure of a relay.

[0032] Figure 6 for Figure 5 A top-view structural diagram.

[0033] Figure 7 This is an isometric structural schematic diagram of a yoke plate according to one embodiment.

[0034] Figure 8 for Figure 7 A side view structural diagram.

[0035] Figure 9 for Figure 8 A top-view structural diagram.

[0036] Figure 10 This is an isometric structural schematic diagram of a frame piece according to one embodiment.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Relay; 10. Housing assembly; 11. Frame piece; 111. Through hole; 1111. First hole wall; 1112. Second hole wall; 1113. Partition plate; 1113a. Third clearance recess; 1114. First hole; 1115. Second hole; 12. Yoke plate; 121. Extension groove; 1211. Groove bottom wall; 1212. First groove side wall; 1213. Second groove side wall; 1214. Third groove side wall; 1214a. First clearance recess; 1215. Fourth groove side wall; 1215a. Second clearance recess; 12 2. Carrier plate section; 1221. Mounting through hole; 123. Enclosure plate section; 124. Annular plate section; 13. Push rod mechanism; 131. Base; 1311. First side; 1312. Second side; 1313. Third side; 1314. Fourth side; 132. Push rod; 133. Moving contact assembly; 14. Auxiliary moving spring; 141. First contact piece section; 142. Second contact piece section; 15. First receiving cavity; 16. Second receiving cavity; 17. Contact cavity; 20. Auxiliary contact; 30. Insulating cover; 40. Stationary contact. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] See Figure 1 and Figure 2 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.

[0046] Please continue reading. Figure 3For example, the relay 100 includes a housing assembly 10 and a push rod mechanism 13.

[0047] The cover assembly 10 has a contact cavity 17 inside. The cover assembly includes a yoke plate 12 located at the bottom. The yoke plate 12 has an extension groove 121 recessed therein. The extension groove 121 communicates with the contact cavity 17 and is configured to expand the longitudinal space dimension of the contact cavity.

[0048] That is, along the longitudinal direction of the relay 100, the extension groove 121 is arranged below the contact cavity 17.

[0049] The push rod mechanism 13 includes a base 131, which can be supported on the bottom wall of the extension groove 121, and the push rod mechanism 13 can drive the base 131 to reciprocate longitudinally within the contact cavity 17 and the extension groove 121.

[0050] For example, the vertical direction of relay 100 can be Figure 4 The arrow S in the diagram points in the same direction. Furthermore, the longitudinal direction of the relay 100 is consistent with the direction of movement of the push rod mechanism 13 and the base 131.

[0051] In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: In the relay 100 of this solution, by forming a contact cavity 17 inside the housing assembly 10, and simultaneously recessing an extension groove 121 on the yoke plate 12, the extension groove 121 communicates with the contact cavity 17, thereby expanding the longitudinal space dimension of the contact cavity 17; on this basis, the push rod mechanism 13 is assembled with the housing assembly 10, so that the base 131 can be supported on the bottom wall of the extension groove 121. That is to say, the base 131 can reciprocate within the longitudinal travel space constructed by the contact cavity 17 and the extension groove 121 under the drive of the push rod mechanism 13, and the base 131 can move into the interior of the extension groove 121 and contact the bottom wall of the extension groove 121. Compared to traditional technologies, since the extension groove 121 can expand the longitudinal space of the contact cavity 17, the length of the groove depth of the extension groove 121 provides the length of the stroke space for the longitudinal reciprocating motion of the base 131, and provides a larger stroke space for the movement of the base 131. In this way, it is not necessary to make the size of the cover assembly 10 larger so that the contact cavity 17 can provide a larger height space, reducing the processing difficulty and cost of the cover assembly 10. At the same time, the smaller size of the cover assembly 10 is also conducive to improving its processing and forming dimensional accuracy.

[0052] Please continue reading. Figure 3 and Figure 4It is necessary to explain that, in order to ensure that the base 131 can make full use of the cavity depth of the extension groove 121 to obtain sufficient travel space, in one embodiment, the orthogonal projection of the base 131 along its direction of movement (i.e., the longitudinal direction of the relay 100) falls completely into the cavity of the extension groove 121.

[0053] The orthographic projection of the base 131 in its direction of movement (i.e., the longitudinal direction of the relay 100) falls completely into the cavity of the extension groove 121. This means that the base 131 can completely enter the cavity of the extension groove 121, thereby avoiding interference between the base 131 and the side wall of the extension groove 121, which would prevent only a part of the base 131 from entering the cavity and thus fail to fully utilize the depth of the cavity.

[0054] Please continue reading. Figure 5 and Figure 6 More specifically, based on the above embodiments, in an optional embodiment, the extension groove 121 is a rectangular groove, and the base 131 and the sidewall of the extension groove 121 are in clearance fit. Therefore, when the base 131 enters or exits the cavity of the extension groove 121, it can avoid contact and interference with its sidewall.

[0055] More specifically, the extension groove 121 has a first groove sidewall 1212 and a second groove sidewall 1213 disposed opposite to each other, and a third groove sidewall 1214 and a fourth groove sidewall 1215 disposed opposite to each other.

[0056] The base 131 has a first side 1311 and a second side 1312 arranged opposite to each other, and a third side 1313 and a fourth side 1314 arranged opposite to each other.

[0057] The first side surface 1311 is clearance-fitted with the first groove side wall 1212, the second side surface 1312 is clearance-fitted with the second groove side wall 1213, the third side surface 1313 is clearance-fitted with the third groove side wall 1214, and the fourth side surface 1314 is clearance-fitted with the fourth groove side wall 1215.

[0058] Because the first side 1311 is in clearance fit with the first groove sidewall 1212, the second side 1312 is in clearance fit with the second groove sidewall 1213, the third side 1313 is in clearance fit with the third groove sidewall 1214, and the fourth side 1314 is in clearance fit with the fourth groove sidewall 1215, the cross-sectional area of ​​the base 131 along the longitudinal direction perpendicular to the relay 100 is smaller than the cross-sectional area of ​​the extension groove 121 along the direction perpendicular to its groove depth. This allows the base 131 to better avoid the groove sidewalls of the extension groove 121 in various directions, and thus more effectively enter and exit the groove cavity of the extension groove 121.

[0059] Please continue reading. Figures 4 to 6Furthermore, in another embodiment, the relay 100 further includes an auxiliary moving spring 14, which is mounted on the base 131. The auxiliary moving spring 14 can be accommodated in the extension groove 121, and the base 131 can drive the auxiliary moving spring 14 to reciprocate longitudinally without interference within the extension groove 121 and / or the contact cavity 17.

[0060] The auxiliary moving spring 14 includes a first contact portion 141 and a second contact portion 142 extending from opposite sides of the base 131.

[0061] Please combine Figure 1 and Figure 2 In addition, the relay 100 is also equipped with an auxiliary contact 20. The auxiliary contact 20 and the first contact portion 141 and the second contact portion 142 of the auxiliary moving spring 14 are aligned along the longitudinal direction of the relay 100. When the base 131 drives the moving contact assembly 133 to move, it will also drive the auxiliary moving spring 14 to move synchronously, so that the first contact portion 141 and the second contact portion 142 contact or separate from the corresponding auxiliary contact 20, so as to realize the real-time detection of the connection status between the moving contact assembly 133 and the stationary contact 40.

[0062] The third side surface 1313 is spaced from the third groove sidewall 1214 to form a first receiving cavity 15, and the fourth side surface 1314 is spaced from the fourth groove sidewall 1215 to form a second receiving cavity 16. The first contact portion 141 extends into the first receiving cavity 15, and the second contact portion 142 extends into the second receiving cavity 16. Therefore, the first receiving cavity 15 and the second receiving cavity 16 can respectively receive the first contact portion 141 and the second contact portion 142, so that the first contact portion 141 and the second contact portion 142 can extend to the outside of the base 131 by a sufficient length, thereby ensuring effective contact or separation with the auxiliary contact 20.

[0063] Furthermore, based on the above embodiment, the sidewall of the extension groove 121 is provided with a first avoidance recess 1214a and a second avoidance recess 1215a, and the first avoidance recess 1214a is correspondingly provided with the first contact portion 141, and the second avoidance recess 1215a is correspondingly provided with the second contact portion 142.

[0064] Specifically, the third groove sidewall 1214 is recessed in a direction away from the third sidewall 1313 to form a first clearance recess 1214a, which is used to accommodate the first contact portion 141; and / or, the fourth groove sidewall 1215 is recessed in a direction away from the fourth sidewall 1314 to form a second clearance recess 1215a, which is used to accommodate the second contact portion 142.

[0065] For example, in this application, the first clearance recess 1214a on the third groove sidewall 1214 and the second clearance recess 1215a on the fourth groove sidewall 1215 coexist. At this time, the recessed structure of the first clearance recess 1214a and the second clearance recess 1215a can make the space size of the first receiving cavity 15 and the second receiving cavity 16 larger, thereby better accommodating the first contact portion 141 and the second contact portion 142, ensuring that the size design of the first contact portion 141 and the second contact portion 142 is not limited by the size of the first receiving cavity 15 and the second receiving cavity 16, and reducing the design and selection difficulty of the auxiliary moving spring 14.

[0066] Furthermore, based on any of the above embodiments, the first groove sidewall 1212 is formed with at least two levels of first stepped surfaces (not shown in the figure) along the groove depth direction of the extension groove 121, and the second groove sidewall 1213 is formed with at least two levels of second stepped surfaces (not shown in the figure) along the groove depth direction of the extension groove 121. The first stepped surfaces and the second stepped surfaces are arranged in a one-to-one correspondence along the transverse direction of the relay 100, and a set of first stepped surfaces and second stepped surfaces at the same groove depth height are used to jointly support the base 131.

[0067] As is easily understood, at least two levels of first stepped surfaces and at least two levels of second stepped surfaces are sequentially formed along the depth direction of the extension groove 121, indicating that the distances between the first and second stepped surfaces at different groove depths are not equal. This allows for installation support for bases 131 with different lengths. In other words, the stepped structure design on the sidewall of the extension groove 121 gives the yoke plate 12 the ability to be adapted to the assembly of bases 131 of different sizes, making one model of yoke plate 12 suitable for the production of different types of relays 100, thus improving the versatility of the yoke plate 12 material.

[0068] Please continue reading. Figure 3 ,as well as Figures 7 to 9 In one embodiment of this application, the yoke plate 12 includes an annular plate portion 124 and an extension portion. The annular plate portion 124 is a plate-shaped member with a through opening in the middle, and the extension portion is a concave member with an extension groove 121. The extension portion is connected to the annular plate portion 124 in such a way that the extension groove 121 corresponds to and communicates with the through opening. Therefore, after the extension portion is connected to the annular plate portion 124, the cavity of the concave extension portion can be formed into the extension groove 121, which simplifies the forming method of the extension groove 121. Furthermore, at this time, the extension groove 121 can automatically communicate with the contact cavity 17 through the through opening of the annular plate portion 124, so as to provide the base 131 with more ample longitudinal movement space.

[0069] Optionally, the annular plate portion 124 and the extension portion are integrally formed; or, the annular plate portion 124 is sealed and welded to the extension portion. This ensures the connection strength and sealing reliability between the annular plate portion 124 and the extension portion.

[0070] Furthermore, the extension portion includes a carrier plate portion 122 and a surrounding plate portion 123. The carrier plate portion 122 and the annular plate portion 124 are spaced apart. The surrounding plate portion 123 is connected between the carrier plate portion 122 and the annular plate portion 124, and the annular plate portion 124 surrounds the outer periphery of the surrounding plate portion 123. The carrier plate portion 122 and the surrounding plate portion 123 cooperate to form an extension groove 121.

[0071] For example, the enclosure plate 123 is a rectangular ring plate. After being installed on the carrier plate 122, it can cooperate with the carrier plate 122 to form an extension groove 121, which makes the forming method and structure of the extension groove 121 simple.

[0072] In other words, it can be understood that one side opening of the enclosure plate portion 123 is covered by the carrier plate portion 122, while the other side opening forms the slot of the extension groove 121, which is used for the base 131 to enter and exit the cavity of the extension groove 121.

[0073] Optionally, the carrier plate portion 122 and the surrounding plate portion 123 and / or the surrounding plate portion 123 and the annular plate portion 124 are integral structures. Therefore, the connection method of the carrier plate portion 122, the surrounding plate portion 123 and the annular plate portion 124 can be selected according to the specific product design scheme and performance requirements.

[0074] For example, in this application, the carrier plate portion 122, the surrounding plate portion 123, and the annular plate portion 124 are designed as an integrated structure to give the yoke plate 12 better overall structural performance, while reducing the number of parts, reducing processing difficulty and cost.

[0075] Please continue reading. Figure 1 and Figure 3 In addition, based on any of the above embodiments, the cover assembly 10 also includes a frame plate 11 and an insulating cover 30. The frame plate 11 is mounted on the yoke plate 12 and located above the yoke plate 12, and the insulating cover 30 is mounted on the frame plate 11 and located above the frame plate 11. The frame plate 11 and the insulating cover 30 cooperate to form a contact cavity 17.

[0076] The push rod mechanism 13 also includes a movable contact component 133, which is connected to the base 131, and the base 131 can drive the movable contact component 133 to reciprocate longitudinally within the contact cavity 17.

[0077] Understandably, a stationary contact 40 is installed on the insulating cover 30, and part of the stationary contact 40 extends into the contact cavity 17.

[0078] The carrier plate portion 122 has a mounting through hole 1221, and the push rod mechanism 13 also includes a push rod 132 connected to the base 131, the push rod 132 being movably inserted into the mounting through hole 1221.

[0079] The mounting through hole 1221 provided in the carrier plate 122 allows the push rod 132 to be installed through it, thus realizing the assembly and connection between the push rod 132 and the yoke plate 12. When the push rod 132 slides back and forth, it can be guided and limited by the hole wall of the mounting through hole 1221, thereby improving the movement stability of the base 131 in the stroke space and improving the contact reliability between the moving contact assembly 133 and the stationary contact 40, as well as between the auxiliary moving spring 14 and the auxiliary contact 20.

[0080] The annular plate portion 124 is provided for loading and supporting the frame piece 11, so that the frame piece 11 can be installed on the yoke plate 12. The annular plate portion 124 and the outer periphery of the frame piece 11 form an annular surface contact, with a large contact area, which can ensure the stable assembly and connection strength of the frame piece 11 and the yoke plate 12.

[0081] Understandably, the so-called travel space represents the space available for the base 131 to reciprocate. Since the base 131 is usually equipped with a moving contact component 133, the movement of the base 131 can synchronously drive the moving contact component 133 to move toward or away from the stationary contact 40, so as to realize the contact or separation of the moving contact component 133 and the stationary contact 40, thereby realizing the on / off control function of the relay 100.

[0082] It should be noted that when the relay 100 in this application is provided with a frame plate 11, the longitudinal travel space for the reciprocating motion of the base 131 is actually defined by the space between the carrier plate portion 122 and the frame plate 11. That is, when the base 131 moves downward away from the frame plate 11 and comes into contact with the carrier plate portion 122, the base 131 is at the downward limit position; when the base 131 moves upward close to the frame plate 11 and finally comes into contact with the frame plate 11, it indicates that the base 131 is at the upward limit position.

[0083] Please continue reading. Figure 10 In addition, in an optional embodiment of this application, the frame piece further includes a partition 1113. The frame piece 11 has a through hole 111 extending vertically. The through hole 111 has a first hole wall 1111 and a second hole wall 1112 disposed opposite to each other. A portion of the first hole wall 1111 and a portion of the second hole wall 1112 are connected by the partition 1113, such that the partition 1113 divides the through hole 111 into a first hole 1114 and a second hole 1115.

[0084] The partition 1113 and the bottom wall 1211 of the extension groove 121 are spaced apart to form a travel space.

[0085] Considering that a traditional relay 100 only has one large insulating cover 30, and even an improved dual-load relay 100 (with two moving contact components 133, capable of connecting two external loads) based on the traditional relay 100 still uses a single insulating cover 30, this type of relay 100 would have a larger size. A large insulating cover 30 is not only difficult and costly to manufacture, but also makes it difficult to guarantee dimensional and shape accuracy. To address this issue, the dual-load relay 100 of this application is equipped with two smaller insulating covers 30, each of which is installed in conjunction with at least one moving contact component 133. It is easy to understand that by reducing the size of a single insulating cover 30, the manufacturing difficulty and cost of the ceramic insulating cover 30 can be significantly reduced, and the dimensional and shape accuracy of the product can be better controlled, ensuring dimensional consistency of relays 100 in the same batch.

[0086] Therefore, the first hole 1114 and the second hole 1115 formed by the partition 1113 can be used to install and cooperate with the corresponding insulating cover 30, while the partition 1113 plays the role of supporting the insulating cover 30, so as to realize the dual-cavity structure design of the relay 100.

[0087] When the partition 1113 is installed, one side is connected to the middle portion of the first hole wall 1111, and the other side is connected to the middle portion of the second hole wall 1112, so that the partition 1113 is exactly above the base 131 along the longitudinal direction of the relay 100, that is, the partition 1113 is in the upward movement path of the base 131. At this time, the partition 1113 and the bottom wall 1211 of the extension groove 121 form a travel space, thereby solving the problem of insufficient longitudinal travel space of the base 131 caused by the partition 1113 blocking the base 131.

[0088] Furthermore, the partition plate 1113 has a third clearance recess 1113a recessed on its side facing the yoke plate 12 in a direction away from the yoke plate 12. The third clearance recess 1113a is used to accommodate the base 131, thereby increasing the movement space of the base 131. The third clearance recess 1113a, which is set as an inward structure, can further increase the distance between the partition plate 1113 and the bottom wall 1211 of the extension groove 121, so as to provide the base 131 with a larger longitudinal travel space.

[0089] It should be noted that when the base 131 rises to the upper limit position, the base 131 is close to the partition 1113. At this time, the base 131 can be partially inserted into the third clearance recess 1113a, or it can be completely inserted into the third clearance recess 1113a. The specific choice can be made flexibly according to actual needs, and no specific limitation is made here.

[0090] 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.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay (100), characterized in that, include: The cover assembly (10) has a contact cavity (17) formed inside. The cover assembly (10) includes a yoke plate (12) located at the bottom. The yoke plate (12) has an extension groove (121) recessed therein. The extension groove (121) communicates with the contact cavity (17) and the extension groove (121) is configured to expand the longitudinal space dimension of the contact cavity (17). as well as The push rod mechanism (13) includes a base (131) which can be supported on the bottom wall of the extension groove (121) and the push rod mechanism (13) can drive the base (131) to reciprocate longitudinally within the contact cavity (17) and the extension groove (121).

2. The relay (100) according to claim 1, characterized in that, The orthographic projection of the base (131) along its direction of motion falls completely into the cavity of the extension groove (121).

3. The relay (100) according to claim 1, characterized in that, The extension groove (121) is a rectangular groove, and the base (131) and the sidewall of the extension groove (121) are in clearance fit.

4. The relay (100) according to claim 1, characterized in that, The relay (100) also includes an auxiliary moving spring (14), which is mounted on the base (131). The auxiliary moving spring (14) can be accommodated in the extension groove (121), and the base (131) can drive the auxiliary moving spring (14) to move longitudinally reciprocally without interference in the extension groove (121) and / or the contact cavity (17).

5. The relay (100) according to claim 4, characterized in that, The auxiliary moving spring (14) includes a first contact portion (141) and a second contact portion (142) extending from opposite sides of the base (131). The sidewall of the extension groove (121) is provided with a first clearance recess (1214a) and a second clearance recess (1215a). The first clearance recess (1214a) is correspondingly provided with the first contact portion (141), and the second clearance recess (1215a) is correspondingly provided with the second contact portion (142).

6. The relay (100) according to claim 3, characterized in that, The extension groove (121) has a first groove sidewall (1212) and a second groove sidewall (1213) arranged opposite to each other. The first groove sidewall (1212) has at least two levels of first stepped surfaces along the groove depth direction of the extension groove (121), and the second groove sidewall (1213) has at least two levels of second stepped surfaces along the groove depth direction of the extension groove (121). The first stepped surfaces and the second stepped surfaces are arranged one-to-one in the transverse direction of the relay (100). A set of first stepped surfaces and second stepped surfaces at the same groove depth height are used to jointly support the base (131).

7. The relay (100) according to claim 1, characterized in that, The yoke plate (12) includes an annular plate portion (124) and an extension portion. The annular plate portion (124) is a plate-shaped member with a through opening in the middle. The extension portion is a concave member with the extension groove (121). The extension portion is connected to the annular plate portion (124) in such a way that the extension groove (121) corresponds to and communicates with the through opening.

8. The relay (100) according to claim 7, characterized in that, The annular plate portion (124) and the extension portion are integral structures; or, the annular plate portion (124) is sealed and welded to the extension portion.

9. The relay (100) according to claim 7, characterized in that, The extension portion includes a carrier plate portion (122) and a surrounding plate portion (123). The carrier plate portion (122) and the annular plate portion (124) are spaced apart. The surrounding plate portion (123) is connected between the carrier plate portion (122) and the annular plate portion (124), and the annular plate portion (124) surrounds the outer periphery of the surrounding plate portion (123). The carrier plate portion (122) and the surrounding plate portion (123) cooperate to form the extension groove (121).

10. The relay (100) according to claim 9, characterized in that, The carrier plate portion (122) has an installation through hole (1221), and the push rod mechanism (13) also includes a push rod (132) connected to the base (131), and the push rod (132) is movably inserted into the installation through hole (1221).

11. The relay (100) according to claim 9, characterized in that, The carrier plate portion (122) and the surrounding plate portion (123) and / or the surrounding plate portion (123) and the annular plate portion (124) are an integral structure.

12. The relay (100) according to claim 1, characterized in that, The cover assembly (10) further includes a frame plate (11) and an insulating cover (30). The frame plate (11) is mounted on the yoke plate (12) and located above the yoke plate (12). The insulating cover (30) is mounted on the frame plate (11) and located above the frame plate (11). The frame plate (11) and the insulating cover (30) cooperate to form the contact cavity (17). The push rod mechanism (13) further includes a movable contact assembly (133). The movable contact assembly (133) is connected to the base (131), and the base (131) can drive the movable contact assembly (133) to move longitudinally back and forth in the contact cavity (17).

13. The relay (100) according to claim 12, characterized in that, The frame piece (11) has a through hole (111) that runs vertically through the frame. The frame piece (11) also includes a partition (1113), which divides the through hole (111) into a first hole (1114) and a second hole (1115). The partition (1113) and the bottom wall 1211 of the extension groove (121) are spaced apart to form the movement space of the base (131).

14. The relay (100) according to claim 13, characterized in that, The partition (1113) has a third clearance recess (1113a) recessed on the surface facing the yoke plate (12) in a direction away from the yoke plate (12), the third clearance recess (1113a) being used to increase the movement space of the base (131).

15. The relay (100) according to claim 1, characterized in that, The relay (100) is a high-voltage DC relay.

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