Relay

Abstract

The invention discloses a relay, and belongs to the technical field of electrical control. The relay comprises a first shell and a second shell, the first shell and the second shell are detachably connected to define an installation cavity, the surface, facing the second shell, of the first shell is provided with a clamping groove which is communicated in a one-way mode, and a groove opening of the clamping groove faces the second shell; and at least part of the first static spring is mounted in the mounting cavity, and at least part of the first static spring is clamped in the clamping groove. Thus, under the condition that the overall size of the relay is not changed, the first static spring can be installed through the installation cavity, the first static spring can also be installed through the clamping groove, and the size of the first static spring in the direction from the first shell to the second shell can extend into the clamping groove from the installation cavity. The size of the first static spring in the direction from the first shell to the second shell is increased through the clamping groove, so that the current-carrying area of the first static spring is not limited. Therefore, the current-carrying area of the first static spring can be increased, and the effective performance of the relay is ensured.

Description

Technical Field

[0001] This application belongs to the field of electrical control technology, and specifically relates to a relay. Background Technology

[0002] In the electrical engineering industry, relays are widely used due to their advantages such as stability, reliability, energy saving, and high load capacity. Among them, the one-in-four-out (LNNL) type relay, with its high output efficiency and small size, can be used in various application scenarios. However, because the mounting space formed by the internal cavity of the relay is fixed, the dimensions of the stationary spring in the thickness direction of the relay are also limited. The size of the stationary spring directly affects the relay's performance. Generally speaking, the larger the current-carrying area of ​​the stationary spring, the lower the relay's on-resistance, the stronger its current carrying capacity, the better its heat control, and the better its overall performance. In existing technologies, limited by the inherent mounting layout, it is difficult to increase the current-carrying area of ​​the stationary spring within the effective internal mounting space of the relay, making it difficult to guarantee the effective performance of the relay. Summary of the Invention

[0003] The purpose of this application is to provide a relay that at least solves the problem that it is difficult to increase the current-carrying area of ​​the stationary reed in the effective internal installation space of the relay, thus making it difficult to guarantee the effective performance of the relay.

[0004] This application provides a relay, the relay comprising: A first housing and a second housing are detachably connected to form an installation cavity. A unidirectional snap-fit ​​groove is provided on the surface of the first housing facing the second housing, and the opening of the snap-fit ​​groove faces the second housing. A first stationary spring is at least partially installed in the mounting cavity and at least partially engaged in the engagement slot.

[0005] In some embodiments, the surface of the first housing opposite to the second housing has a receiving structure for accommodating at least a portion of a shield structure, and the snap-fit ​​groove is disposed close to the receiving structure.

[0006] In some embodiments, the shielding cover includes at least a first shielding plate and a second shielding plate spaced apart, the first shielding plate covering at least a portion of the surface of the first housing facing away from the second housing, the second shielding plate covering at least a portion of the surface of the second housing facing away from the first housing, and the first shielding plate being snapped into the receiving structure.

[0007] In some embodiments, a first protrusion and a second protrusion are formed on the surface of the first housing away from the second housing on both sides of the receiving structure in the first direction, and the two sidewalls of the first protrusion and the second protrusion opposite each other in the first direction are two groove walls of the receiving structure opposite each other in the first direction, and the snap-fit ​​groove at least partially corresponds to the position of the first protrusion; wherein, the first direction is the direction in which the first protrusion points to the second protrusion.

[0008] In some embodiments, the snap-fit ​​groove is at least partially formed inside the first protrusion, and the end face of the first protrusion facing away from the second housing and the slot of the snap-fit ​​groove facing the mounting cavity are positioned relative to each other in a second direction, wherein the first direction and the second direction are perpendicular.

[0009] In some embodiments, a first positioning groove is provided on the end face of the first protrusion, and the shape of the first positioning groove matches the shape of the portion of the snap-fit ​​groove facing the mounting cavity.

[0010] In some embodiments, the second protrusion has a second shaped groove, and the shape of the second shaped groove matches the shape of the first shaped groove.

[0011] In some embodiments, the end of the first protrusion has a first inclined surface, and the end of the second protrusion has a second inclined surface. The first inclined surface and the second inclined surface are respectively located at two opposite groove walls of the receiving structure in the first direction, so that the receiving structure forms a flared structure between the first inclined surface and the second inclined surface.

[0012] In some embodiments, the dimensions of the first protrusion in the second direction and the dimensions of the second protrusion in the second direction are both greater than or equal to the dimensions of the portion of the snap-fit ​​groove facing the mounting cavity in the second direction.

[0013] In some embodiments, the snap-fit ​​groove includes a first groove portion and a second groove portion; a third protrusion is formed on the surface of the first housing away from the second housing on the side of the receiving structure in the third direction, the third protrusion extends along the first direction, and the extension directions of the first protrusion and the second protrusion intersect the extension direction of the third protrusion; the first groove portion is formed inside the first protrusion, the second groove portion is formed inside the third protrusion, and one sidewall of the third protrusion in the third direction is the sidewall of the receiving structure in the third direction; Wherein, the third direction is perpendicular to the first direction and perpendicular to the extension direction of the third protrusion.

[0014] In some embodiments, the relay further includes a first moving spring, a second stationary spring, and a second moving spring; the second stationary spring is installed in the mounting cavity; the first moving spring is disposed opposite to the first stationary spring, and the second moving spring is disposed opposite to the second stationary spring.

[0015] In some embodiments, the relay includes a pusher, the first moving spring includes a first moving contact, the second moving spring includes a second moving contact, the first stationary spring includes a first stationary contact, the second stationary spring includes a second stationary contact, the first stationary contact and the first moving contact are disposed opposite to each other, and the second stationary contact and the second moving contact are disposed opposite to each other. The pusher is simultaneously driven and connected to the first moving spring and the second moving spring, and at least part of the structure of the first stationary spring overlaps with the pusher in a second direction. The pusher can move along a first direction so that the first stationary contact and the first moving contact, the second stationary contact and the second moving contact simultaneously engage or disengage, wherein the first direction and the second direction are perpendicular, and the first direction is the extension direction of the pusher.

[0016] In some embodiments, a second baffle is also provided on the first housing; The second retaining wall is located close to the second stationary spring and on the side of the second stationary spring away from the first stationary spring. The second retaining wall is provided with a grid rib structure.

[0017] In some embodiments, the first stationary spring includes a stationary spring body and a first conductive lead; The stationary spring body and the first conductive lead are fixedly connected, and the stationary spring body and the first conductive lead are bent. The snap-fit ​​groove includes a first groove portion and a second groove portion. The first groove portion is disposed opposite to the mounting cavity, and the second groove portion is located outside the mounting cavity. The stationary spring body is at least partially snapped into the first groove portion, and the first conductive lead is at least partially snapped into the second groove portion.

[0018] In some embodiments, the relay further includes a third housing, and the first housing further includes an extended housing located on one side of the mounting cavity. The third housing covers the extended housing and together with the extended housing form a fixed cavity, and the second groove portion is disposed opposite the fixed cavity.

[0019] In some embodiments, the first housing has a guide slot that connects the fixing cavity and the mounting cavity, and the first conductive lead extends out from the guide slot; The second housing includes a baffle that extends along the direction from the second housing to the first housing. The baffle and the guide slot are positioned opposite each other in the third direction, and the orthographic projection of the guide slot in the third direction is located within the orthographic projection of the baffle in the third direction, wherein the third direction is perpendicular to the plane in which the baffle is located.

[0020] In some embodiments, the width of the baffle gradually decreases along the direction from the second housing to the first housing, and the width of the baffle at the end away from the second housing is greater than the width of the guide slot.

[0021] In some embodiments, the first conductive lead extends from the fixed cavity, the first conductive lead extends along the extension direction of the fixed cavity, and the fixed cavity includes at least one locking structure, wherein at least one portion of the first conductive lead located in the fixed cavity is engaged between the locking structure and the side wall of the first housing.

[0022] In some embodiments, the relay further includes a drive component; The drive assembly is installed in the mounting cavity, the first stationary spring is disposed close to the drive assembly, and the first stationary spring and the drive assembly have a first retaining wall disposed on the surface of the first housing facing the second housing.

[0023] In some embodiments, the surface of the first retaining wall facing the sidewall of the first stationary spring has a limiting groove, and the surface of the first stationary spring facing the first retaining spring has a limiting protrusion, the limiting protrusion being engaged in the limiting groove.

[0024] In some embodiments, a baffle is provided on the surface of the second housing facing the first housing, and a partition groove is provided on the surface of the first housing facing the second housing, with the baffle engaging in the partition groove.

[0025] According to the embodiments of this application, since a unidirectional snap-fit ​​groove is formed on the surface of the first housing facing the second housing, with the groove opening facing the second housing, the first stationary spring is at least partially installed in the mounting cavity and at least partially snapped into the snap-fit ​​groove. Therefore, without changing the volume of the mounting cavity formed by the first and second housings, or in other words, without changing the overall volume of the relay, the first stationary spring can be installed either through the mounting cavity or through the snap-fit ​​groove. Furthermore, the dimension of the first stationary spring in the direction from the first housing to the second housing can extend from the mounting cavity into the snap-fit ​​groove. In other words, even with a limited volume of the mounting cavity formed by the first and second housings, the dimension of the first stationary spring in the direction from the first housing to the second housing can be extended through the snap-fit ​​groove, thus ensuring that the current-carrying area of ​​the first stationary spring is not limited. In this way, the relay provided in this application embodiment increases the current-carrying area of ​​the first stationary spring and ensures the effective performance of the relay within the limited mounting cavity formed by the first and second housings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This diagram illustrates the structure of a relay according to an embodiment of this application. Figure 2 This diagram illustrates the installation position of a relay including a shielding cover, as provided in an embodiment of this application. Figure 3 This application provides a top view of a relay including a first housing according to an embodiment of the present application; Figure 4 This application provides an embodiment of a relay including a first housing. Figure 3 A schematic diagram of the cross-sectional structure along the N-N direction; Figure 5 This represents a partial cross-sectional view of a first housing included in a relay according to an embodiment of this application; Figure 6 This illustration shows one of the internal assembly diagrams of a relay including a first housing according to an embodiment of this application. Figure 7 This is a second schematic diagram showing the internal assembly of a relay including a first housing according to an embodiment of this application; Figure 8 This application provides a relay in which... Figure 7A magnified view of a portion of point A; Figure 9 This is one of the structural schematic diagrams of a relay including a first housing provided in an embodiment of this application; Figure 10 This is a second schematic diagram showing the structure of a relay including a first housing according to an embodiment of this application; Figure 11 This is the third schematic diagram showing the structure of a relay including a first housing according to an embodiment of this application; Figure 12 This application provides an embodiment of a relay including a first housing along... Figure 11 A schematic diagram of the cross-section along the DD direction; Figure 13 This application provides an embodiment of a relay including a first housing along... Figure 11 A schematic diagram of the cross-section along the CC direction; Figure 14 This is a schematic diagram illustrating the assembly of a relay including a first housing and a first conductive lead, according to an embodiment of this application. Figure 15 This is a schematic diagram showing the structure of a second housing included in a relay according to an embodiment of this application; Figure 16 This illustration shows one of the assembly diagrams between a first housing and a second housing of a relay provided in this application embodiment; Figure 17 This is a second schematic diagram illustrating the assembly between a first housing and a second housing of a relay provided in this application embodiment.

[0028] Figure label: 1: First housing; 11: Receiving structure; 12: Snap-fit ​​groove; 121: First groove portion; 122: Second groove portion; 13: First protrusion; 131: First positioning groove; 132: First inclined surface; 14: Second protrusion; 141: Second positioning groove; 142: Second inclined surface; 15: Guide groove; 16: Fixing cavity; 17: First baffle; 18: Second baffle; 19: Mesh rib structure; 101: Partition groove; 102: Extended housing; 103: Third protrusion; 104: Third housing; 2: Second housing; 21: Snap-fit ​​arm; 22: Positioning structure; 23: Baffle; 24: Baffle plate; 3: Shielding cover; 31: First shielding plate; 32: Second shielding plate; 4: First stationary spring; 41: First stationary contact; 42: Limiting protrusion; 43: Stationary spring body; 44: First conductive lead-out foot; 5: Second stationary spring; 51: First stationary contact; 6: Pushing element; 7: First moving spring; 71: First moving contact; 8: Second moving spring; 81: Second moving contact; 9: Drive assembly; X: First direction; Z: Second direction; Y: Third direction. Detailed Implementation

[0029] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] like Figures 1 to 7 As shown in the figure, this application embodiment provides a relay, the relay including: A first housing 1 and a second housing 2 are detachably connected to form an installation cavity. A unidirectional snap-fit ​​groove 12 is provided on the surface of the first housing 1 facing the second housing 2, with the opening of the snap-fit ​​groove 12 facing the second housing 2.

[0033] The first stationary spring 4 is at least partially installed in the mounting cavity and at least partially engaged in the engagement groove 12.

[0034] As can be seen from the above embodiments, in this application embodiment, since a unidirectional snap-fit ​​groove 12 is provided on the surface of the first housing 1 facing the second housing 2, and the opening of the snap-fit ​​groove 12 faces the second housing 2, the first stationary spring 4 is at least partially installed in the mounting cavity and at least partially snapped into the snap-fit ​​groove 12. Therefore, when the volume of the mounting cavity formed by the first housing 1 and the second housing 2 remains unchanged, or in other words, when the overall volume of the relay remains unchanged, the first stationary spring 4 can be installed either through the mounting cavity or through the snap-fit ​​groove 12. Furthermore, the dimension of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2 can extend from the mounting cavity into the snap-fit ​​groove 12. In other words, even with a limited volume of the mounting cavity formed by the first housing 1 and the second housing 2, the dimension of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2 can be extended through the snap-fit ​​groove 12, so that the current-carrying area of ​​the first stationary spring 4 is not limited. Thus, the relay provided in this application embodiment increases the current-carrying area of ​​the first stationary spring and ensures the effective performance of the relay even with a limited mounting cavity formed by the first housing 1 and the second housing 2.

[0035] It should be noted that a unidirectional snap-fit ​​groove 12 is provided on the surface of the first housing 1 facing the second housing 2, and the opening of the snap-fit ​​groove 12 faces the second housing. That is, the snap-fit ​​groove 12 is only open at one end, and the snap-fit ​​groove 12 only serves to assemble the first stationary spring 4.

[0036] In the above embodiments, the first housing 1 and the second housing 2 can be at least one of a single-end open housing structure, a frame structure, or a box structure, and this application does not limit this. The first housing 1 and the second housing 2 can be detachably connected by at least one of the following connection methods: snap-fit, riveting, threaded connection, etc., so as to install the circuit control component of the relay in the mounting cavity formed between the first housing 1 and the second housing 2. In some embodiments, the first housing 1 can be a base, and the second housing 2 can be a cover.

[0037] In some embodiments, such as Figure 2 As shown, the relay also includes a shielding cover 3. The first housing 1 has a receiving structure 11 on its surface away from the second housing 2. The receiving structure 11 is used to receive at least a part of the structure of a shielding cover 3. The snap-fit ​​groove 12 is located near the receiving structure 11.

[0038] In this embodiment, at least part of the shielding cover 3 structure can be accommodated through the receiving structure 11 opened in the first housing 1, so as to avoid the shielding cover 3 occupying space alone on the first housing 1, thereby reducing the overall height of the first housing 1, the second housing 2 and the shielding cover 3 to meet the design requirements of the small size of the entire relay.

[0039] It should be noted that the shielding cover 3 can be at least one of the following structures: a U-shaped frame structure, a U-shaped frame structure, an I-shaped frame structure, etc. In an exemplary embodiment, the shielding cover 3 may include a first shielding plate 31 and a second shielding plate 32 disposed opposite to each other along a second direction, such that the first housing 1 and the second housing 2 are located in the space between the first shielding plate 31 and the second shielding plate 32. The first shielding plate 31 covers at least a portion of the surface of the first housing 1 facing away from the second housing 2, and the second shielding plate 32 covers at least a portion of the surface of the second housing 2 facing away from the first housing 1, and the first shielding plate 31 is snapped into the receiving structure 11. The shielding cover 3 can be made of materials such as copper, aluminum, steel, or chromium-zirconium-copper alloy, and this embodiment of the application does not limit the materials used.

[0040] It should also be noted that the first shielding plate 31 is typically attached to the surface of the first housing 1 facing away from the second housing 2, and the second shielding plate 32 is typically attached to the surface of the second housing 2 facing away from the first housing 1. This means that the dimensions of the structure formed by the first housing 1, the second housing 2, and the shielding cover 3 in the second direction include, in addition to the dimensions of the first housing 1 and the second housing 2 in the second direction, the dimensions of the first shielding plate 31 and the second shielding plate 32 in the second direction, i.e., the thickness of the first shielding plate 31 and the thickness of the second shielding plate 32. However, in this application, since a receiving structure 11 is provided on the surface of the first housing 1 facing away from the second housing 2, and the first shielding plate 31 is snapped into the receiving structure 11, the dimensions of the structure formed by the first housing 1, the second housing 2, and the shielding cover 3 in the second direction do not include the thickness of the first shielding plate 31, thereby reducing the size of the relay in the second direction. The first and second directions are perpendicular, and the second direction is the direction from the first housing 1 to the second housing 2.

[0041] In summary, the shielding cover 3 can be accommodated by the receiving structure 11 in the first housing 1, avoiding the shielding cover 3 occupying space in the second direction. This reduces the overall size of the first housing 1, the second housing 2, and the shielding cover 3 in the second direction, meeting the design requirements for a small relay size and reducing the application limitations of the relay. It also facilitates the installation of the shielding cover 3 on the first housing 1 and the second housing 2, reducing the assembly difficulty of the relay and decreasing manufacturing costs. Furthermore, with a small relay size, the size of the first stationary spring 4 in the second direction can be extended by the snap-fit ​​groove 12, and the size of the first stationary spring 4 in the first direction can be increased, thus meeting the small relay size design while ensuring the effective current-carrying area of ​​the first stationary spring 4. The relay provided by this invention not only effectively solves the shielding problem but also enables high-current operation. Its compact and reasonable overall layout achieves synergistic optimization of space utilization and performance improvement, effectively enhancing the overall performance of the relay.

[0042] The shape of the receiving structure 11 formed on the surface of the first housing 1 away from the second housing 2 is determined according to the first shielding plate 31. For example, if the first shielding plate 31 is square, the receiving structure 11 is a directional groove; if the first shielding plate 31 is circular, the receiving structure 11 is a circular groove.

[0043] In some embodiments, such as Figure 3 and Figure 5 As shown, on the surface of the first housing 1 away from the second housing 2, a first protrusion 13 and a second protrusion 14 are formed on both sides of the accommodating structure 11 in the first direction, and the two side walls of the first protrusion 13 and the second protrusion 14 opposite each other in the first direction are two groove walls of the accommodating structure 11 opposite each other in the first direction. The snap-fit ​​groove 12 corresponds at least partially to the position of the first protrusion 13.

[0044] In this embodiment, since the receiving structure 11 is provided on the surface of the first housing 1 away from the second housing 2, a first protrusion 13 and a second protrusion 14 are formed on both sides of the receiving structure 11 in the first direction on the surface of the first housing 1 away from the second housing 2. Therefore, the first protrusion 13 can be used to form a snap-fit ​​groove 12. At the same time, the arrangement of the first protrusion 13 and the second protrusion 14 reduces the overall weight of the first housing 1 and lowers the manufacturing cost of the first housing 1. It should be noted that the first protrusion 13 and the second protrusion 14 are protrusions formed relative to the bottom of the groove of the receiving structure 11. That is, the first protrusion 13 and the receiving structure 11 share a sidewall, and the second protrusion 14 and the receiving structure 11 share a sidewall. Furthermore, the surfaces of the first protrusion 13 and the second protrusion 14 away from the second housing 2 are coplanar. In this way, the side of the first protrusion 13 away from the receiving structure 11 and the side of the second protrusion 14 away from the receiving structure 11 both have planar notch structures, so that the plane where the planar notch structure is located and the bottom surface of the receiving structure 11 are on the same plane, thereby reducing the overall weight of the first housing 1 through the planar notch structure, which facilitates the design of lightweight relays.

[0045] It should be noted that the shape of the portion of the snap-fit ​​groove 12 facing the mounting cavity is adapted to the shape of the first stationary spring 4. The snap-fit ​​groove 12 is connected to the mounting cavity, thereby allowing a portion of the structure of the first stationary spring 4 to snap into the snap-fit ​​groove 12. The distance between the first protrusion 13 and the second protrusion 14 in the first direction is determined based on the dimensions of the first shielding plate 31 in the first direction.

[0046] In some embodiments, at least a portion of the shielding cover 3 is structurally engaged between the first protrusion 13 and the second protrusion 14, so that the first protrusion 13 and the second protrusion 14 can provide a limiting effect for the shielding cover 3, further facilitating the installation and positioning of the shielding cover 3.

[0047] In some embodiments, such as Figure 5 As shown, the position of the snap-fit ​​groove 12 corresponds at least partially to the position of the first protrusion 13. In some embodiments, the snap-fit ​​groove 12 is at least partially formed inside the first protrusion 13, and the end face of the first protrusion 13 facing away from the second housing 2 and the slot of the snap-fit ​​groove 12 facing the mounting cavity are positioned relative to each other in a second direction.

[0048] In this embodiment, since the snap-fit ​​groove 12 is at least partially formed inside the first protrusion 13, the end face of the first protrusion 13 facing away from the second housing 2 and the slot of the snap-fit ​​groove 12 facing the mounting cavity are in a relative position in the second direction. Therefore, the portion of the snap-fit ​​groove 12 facing the mounting cavity can extend into the interior of the first protrusion 13, thereby increasing the size of the snap-fit ​​groove 12 in the second direction without increasing the space. At the same time, it can be ensured that the snap-fit ​​groove 12 is a single-end conductive groove, and that the slot of the snap-fit ​​groove 12 faces the mounting cavity.

[0049] In some embodiments, a first positioning groove 131 is provided on the end face of the first protrusion 13 facing away from the second housing 2, and the shape of the first positioning groove 131 matches the shape of the portion of the snap-fit ​​groove 12 facing the mounting cavity.

[0050] In this embodiment, since a first positioning groove 131 is provided on the end face of the first protrusion 13 facing away from the second housing 2, the shape of the first positioning groove 131 matches the shape of the part of the snap-fit ​​groove 12 facing the mounting cavity, so that the shapes of the first positioning groove 131 and the part of the snap-fit ​​groove 12 facing the mounting cavity are consistent, further ensuring the consistency of the slotted structure on both sides of the first protrusion 13, and at the same time, the strength of the first protrusion is improved by the first positioning groove 131.

[0051] In some embodiments, such as Figure 2 and Figure 5 As shown, the second protrusion 14 has a second positioning groove 141, and the shape of the second positioning groove 141 matches the shape of the first positioning groove 131.

[0052] In this embodiment, since the second protrusion 14 has a second positioning groove 141 and the shape of the second positioning groove 141 matches the shape of the first positioning groove 131, the shapes of the second protrusion 14 of the first protrusion 13 are kept consistent, improving the consistency of the surface of the first housing 1. At the same time, the strength of the first protrusion 13 can be enhanced by the first positioning groove 131, and the strength of the second protrusion 14 can be enhanced by the second positioning groove 14, thereby enhancing the strength of the first housing 1 away from the surface of the second housing 2.

[0053] It should be noted that the shape of the second positioning groove 141 matches the shape of the first positioning groove 131. This can be understood as the shape features of the second positioning groove 141 being consistent with the shape features of the first positioning groove 131, the relative position features of the second positioning groove 141 and the first positioning groove 131, and the size features of the second positioning groove 141 being consistent with the size features of the first positioning groove 131. The shape of the first positioning groove 131 matching the shape of the snap-fit ​​groove 12 can be understood as the shape features of the snap-fit ​​groove 12 being consistent with the shape features of the first positioning groove 131, the relative position features of the snap-fit ​​groove 12 and the first positioning groove 131, and the size features of the snap-fit ​​groove 12 being consistent with the size features of the first positioning groove 131. This application embodiment does not limit this aspect.

[0054] It should also be noted that both the first positioning groove 131 and the second positioning groove 141 are single-end conductive groove structures, which can prevent external contaminants from entering the installation cavity through the first positioning groove 131 and the second positioning groove 141.

[0055] In some embodiments, the end of the first protrusion 13 has a first inclined surface 132, and the end of the second protrusion 13 has a second inclined surface 142. The first inclined surface 131 and the second inclined surface 142 are respectively located at two opposite groove walls of the receiving structure 11 in a first direction, so that the receiving structure 11 forms a flared structure between the first inclined surface 132 and the second inclined surface 142. This flared structure allows the shielding cover 3 to be guided onto the receiving structure 11, making it easier to install the shielding cover 3 onto the first housing. It should be noted that the installation direction of the shielding cover 3 in the receiving structure 11 is a third direction, such as... Figure 1 and Figure 2 The direction shown in Y.

[0056] In some embodiments, the dimensions of the first protrusion 13 and the second protrusion 14 in the second direction are both greater than or equal to the dimensions of the portion of the snap-fit ​​groove 12 facing the mounting cavity in the second direction. This maximizes the dimensions of the portion of the snap-fit ​​groove 12 facing the mounting cavity in the second direction, while ensuring that the snap-fit ​​groove 12 is always located inside the first protrusion 13, thus ensuring that the snap-fit ​​groove 12 is a single-ended conductive groove structure.

[0057] In some embodiments, such as Figure 6 and Figure 7 As shown, the relay also includes a first moving spring 7, a second stationary spring 5, and a second moving spring 8. The second stationary spring 5 is installed in the mounting cavity, and the first moving spring 7 is arranged opposite to the first stationary spring 4. In this way, the on / off state between the control circuits corresponding to the first moving spring 7 and the first stationary spring 4 can be changed by the cooperation between the first moving spring 7 and the first stationary spring 4.

[0058] In some embodiments, such as Figure 6 As shown, the relay also includes a pusher 6, a first moving spring 7 including a first moving contact 71, a second moving spring 8 including a second moving contact 81, a first stationary spring 4 including a first stationary contact 41, and a second stationary spring 5 including a second stationary contact 51. The first stationary contact 41 and the first moving contact 71 are arranged opposite to each other, and the second stationary contact 51 and the second moving contact 81 are arranged opposite to each other. The pusher 6 is simultaneously driven connected to the first moving spring 7 and the second moving spring 8, and at least part of the structure of the first stationary spring 4 overlaps with the pusher 6 in a second direction. The pusher 6 can move along a first direction so that the first stationary contact 41 and the first moving contact 71, the second stationary contact 51 and the second moving contact 81 simultaneously engage or disengage.

[0059] In this embodiment, the contact state between at least two sets of contacts can be changed simultaneously by the movement of a pusher 6 in the first direction, thereby changing the output state of the relay. This not only helps the relay maintain low power consumption and high reliability, but also helps reduce the overall size of the relay. Furthermore, since at least a portion of the structure of the first stationary spring 4 overlaps with the pusher 6 in the second direction, the installation of the pusher 6 occupies the installation space of the first stationary spring 4 in the second direction. Thus, when at least a portion of the structure of the first stationary spring 4 is engaged in the engagement groove 12, the installation space provided by the engagement groove 12 for the first stationary spring 4 can compensate for the installation space occupied by the pusher 6 in the second direction. Therefore, while the installation of the pusher 6 and the first stationary spring 4 does not interfere with each other, the dimension of the first stationary spring 4 in the second direction can be extended through the engagement groove 12.

[0060] It should be noted that the first stationary spring 4 and the second stationary spring 5 may be located on the same side of the drive assembly 9 in the first direction, or they may be located on different sides of the drive assembly 9 in the first direction. This application embodiment does not limit this.

[0061] In some embodiments, the second stationary spring 5 is located at the edge of the mounting cavity. In this way, the mounting space formed by the second housing 2 and the first housing 1 can be reasonably utilized, making it convenient for the first stationary contact 41 and the first moving contact 71, the second stationary contact 51 and the second moving contact 81 to engage or disengage simultaneously in space.

[0062] In the embodiments provided by the present invention, when the overall size of the relay in the direction from the first housing 1 to the second housing 2 is reduced, the size of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2 can still be positively compensated, thereby ensuring the effective current-carrying area of ​​the first stationary spring 4 while satisfying the design of the small size of the relay.

[0063] In some embodiments, such as Figure 7 Figure 8As shown, a second baffle 18 is also provided on the first housing 1. The second baffle 18 is located close to the second stationary spring 5 and on the side of the second stationary spring 5 away from the first stationary spring 4. The second baffle 18 has a mesh rib structure 19. In this way, the second baffle 18 avoids interference from other components with the installation and operation of the second stationary spring 5. At the same time, the mesh rib structure 19 of the second baffle 18 increases the strength of the second baffle 18, making the relay less prone to deformation during installation and more conducive to maintaining performance stability.

[0064] It should be noted that the first stationary spring 4 provided in this application embodiment may include two parts: one part is a structure that cooperates with the first moving spring 7, and the other part is a structure that leads the first stationary spring 4 out of the mounting cavity. Based on this, the snap-fit ​​groove 12 may also include two parts to adapt to the structure of the first stationary spring 4.

[0065] Specifically, such as Figure 4 , Figure 5 , Figure 7 , Figure 12 and Figure 14 As shown, in some embodiments, the first stationary spring 4 includes a stationary spring body 43 and a first conductive lead 44, and the snap-fit ​​groove 12 includes a first groove portion 121 and a second groove portion 122. A third protrusion 103 is formed on the surface of the first housing 1 facing away from the second housing 2 on the side of the receiving structure 11 facing a third direction. The third protrusion 103 extends along a first direction, and the extending directions of the first protrusion 12 and the second protrusion 13 intersect the extending direction of the third protrusion 103. The first groove portion 121 is formed inside the first protrusion 13, and the second groove portion 122 is formed inside the third protrusion 103. One sidewall of the third protrusion 102 in the third direction is the sidewall of the receiving structure 11 in the third direction. The third direction is perpendicular to the first direction and perpendicular to the extending direction of the third protrusion 103.

[0066] In this embodiment, the size of the stationary spring body 43 in the direction from the first housing 1 to the second housing 2 can be extended by the first groove portion 121, and the size of the first conductive lead 122 in the direction from the first housing 1 to the second housing 2 can be extended by the second groove portion 122, thereby increasing the overall size of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2, and further increasing the current-carrying area of ​​the first stationary spring 4. It should be noted that the stationary spring body 43 and the first conductive lead 44 can be separate structures or integrated structures, and this embodiment does not limit this.

[0067] Furthermore, since the first groove portion 121 is formed inside the first protrusion 13, and the second groove portion 122 is formed inside the third protrusion 103, and one sidewall of the third protrusion 102 in the third direction is the sidewall of the accommodating structure 11 in the third direction, not only can the first groove portion 121 extend into the interior of the first protrusion 13, but the second groove portion 122 can also extend into the interior of the third protrusion 103. This increases the overall size of the snap-fit ​​groove 12 in the second direction without increasing the available space. In some embodiments, the stationary spring body 43 and the first conductive lead 44 are fixedly connected, and the stationary spring body 43 and the first conductive lead 44 are bent. The first groove portion 122 is disposed directly opposite the mounting cavity, and the second groove portion 122 is located outside the mounting cavity. The stationary spring body 43 is at least partially engaged in the first groove portion 122, and the first conductive lead 44 is at least partially engaged in the second groove portion 122. In this way, the first groove portion 122 can be adapted to the mounting of the stationary spring body 43, and the stationary spring body 43 can be installed in the mounting cavity. The first groove portion 122 adapts to the first conductive lead 44, thereby ensuring that the overall size of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2 is increased. It should be noted that the stationary spring body 43 and the first conductive lead 44 can extend in different directions to bend the stationary spring body 43 and the first conductive lead 44 together to form an L-shaped structure of the first stationary spring 4. Alternatively, the first conductive lead 44 can be an L-shaped bent structure so that the stationary spring body 43 and the first conductive lead 44 together form an L-shaped structure of the first stationary spring 4. This application does not limit this aspect.

[0068] In some embodiments, the relay further includes a third housing 104, and the first housing 1 further includes an extension housing 102 located on one side of the mounting cavity. The third housing 104 covers the extension housing 102 and together with the extension housing 102 forms a fixed cavity 16. The second groove portion 122 is disposed opposite to the fixed cavity 16.

[0069] In this way, the stationary spring body 43 can be installed either through the mounting cavity or through the first groove portion 121. Furthermore, the dimension of the stationary spring body 43 in the direction from the first housing 1 to the second housing 2 can extend from the mounting cavity into the first groove portion 121. Simultaneously, the first conductive lead 44 can be installed either through the fixing cavity 16 or through the second groove portion 122. Moreover, the dimension of the first conductive lead 44 in the direction from the first housing 1 to the second housing 2 can extend from the fixing cavity 16 into the second groove portion 122. This results in an increase in the overall dimension of the first stationary spring 4 in the direction from the first housing 1 to the second housing 2.

[0070] In some embodiments, such as Figures 10 to 15 As shown, the first housing 1 has a guide groove 15 connecting the fixing cavity 16 and the mounting cavity, and the first conductive lead-out foot 44 extends out from the guide groove 15. The second housing 2 includes a baffle 24, which extends along the direction from the first housing 1 to the second housing 2. The baffle 24 and the guide groove 15 are directly opposite each other in the third direction, and the orthographic projection of the guide groove 15 in the third direction is located within the orthographic projection of the baffle 24 in the third direction. The third direction is perpendicular to both the first direction and the second direction, and the third direction is perpendicular to the plane where the baffle 24 is located.

[0071] In this embodiment, since the baffle 24 and the guide slot 15 are positioned opposite each other in the third direction, and the orthographic projection of the guide slot 15 in the third direction is located within the orthographic projection of the baffle 24 in the third direction, the baffle 24 can be prevented from accidentally getting stuck in the guide slot 15. This avoids misassembly during the assembly of the second housing 2 and the first housing 1, thus improving the assembly efficiency between the first housing 1 and the second housing 2. Furthermore, since the conductive lead 44 connected to the first stationary spring 4 extends out of the guide slot 15, the conductive lead 44 connected to the first stationary spring 4 can be misaligned with other conductive leads, further reducing the overall size of the relay.

[0072] It should be noted that the first direction in the embodiments of this application is as follows: Figure 1 and Figure 2 The direction shown in the middle X, the second direction is as follows Figure 1 and Figure 2 The direction shown by Z in the middle, the third direction is as follows Figure 1 and Figure 2 The direction indicated by Y in the diagram. To further clarify, the definition of perpendicularity in the instruction manual should be understood as perpendicular if it fluctuates by 10% within 90 degrees. Specifically, the angle between the first and second defined directions should be understood as perpendicular if it is between 80 and 90 degrees; the angle between the first and third defined directions should be understood as perpendicular if it is between 80 and 90 degrees; and the angle between the second and third defined directions should be understood as perpendicular if it is between 80 and 90 degrees.

[0073] In some embodiments, such as Figure 16 and Figure 17As shown, the width of the baffle 24 gradually decreases along the direction from the second housing 2 to the first housing 1, and the end of the baffle 24 furthest from the second housing 2 (i.e., the minimum width of the baffle) is greater than the width of the guide groove 15. This design allows the baffle 24 to be easily inserted into the corresponding part of the first housing through its wedge-shaped structure (smaller at the bottom and larger at the top), while also ensuring that the baffle 24 is not mistakenly installed in the guide groove 15. It should be noted that the width of the baffle 24 is its dimension in the first direction, and the width of the guide groove 15 is its dimension in the first direction.

[0074] In some embodiments, such as Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the first housing 1 and the second housing 2 are assembled to form a fixed cavity 16 located on one side of the mounting cavity. The fixed cavity 16 and the mounting through groove are connected through the guide through groove 15. The first conductive lead-out foot 44 is led out from the fixed cavity 16. The first conductive lead-out foot 44 extends along the extension direction of the fixed cavity 16. The fixed cavity 16 includes at least one locking structure 22. At least one part of the first conductive lead-out foot 44 located in the fixed cavity 16 is engaged between the locking structure 22 and the side wall of the first housing 1.

[0075] In this embodiment, since the first housing 1 and the second housing 2 are assembled to form a fixed cavity 16 located on one side of the mounting cavity, the fixed cavity 16 and the mounting through groove are connected through the guide through groove 15. The first conductive lead 44 is led out from the fixed cavity 16 and extends along the extension direction of the fixed cavity 16. Therefore, the fixed cavity 16 can not only accommodate the first conductive lead 44 connected to the first stationary spring 4, thus avoiding short circuits between the first conductive lead 44 and other conductive leads in space, but also facilitate the staggered arrangement between the first conductive lead 44 and other conductive leads, further reducing the overall size of the relay. Furthermore, since the fixed cavity 16 includes at least one locking structure 22, at least one part of the first conductive lead 44 located in the fixed cavity 16 is locked between the locking structure 22 and the side wall of the first housing 1. Therefore, the locking structure 22 can ensure that the first conductive lead 44 can be stably fixed in the fixed cavity 16, preventing displacement of the conductive lead. It should be noted that the locking structure can also be a ridge or protrusion structure set on the inner wall of the second housing 2, and this application embodiment does not limit this.

[0076] In some embodiments, for the assembly between the second housing 2 and the first housing 1, the second housing 2 includes multiple snap-fit ​​arms 21, and the first housing 1 is provided with multiple snap-fit ​​slots. The second housing 2 and the first housing 1 are snapped together by the snap-fit ​​arms 21 and the snap-fit ​​slots. In this way, the second housing 2 and the first housing 1 can be detachably connected by snapping together by the snap-fit ​​arms 21 and the snap-fit ​​slots, which facilitates the assembly between the second housing 2 and the first housing 1. In the event of a relay fault, it is also easy to disassemble the second housing 2 and the first housing 1, which facilitates subsequent maintenance.

[0077] In some embodiments, such as Figure 6 and Figure 7 As shown, the relay also includes a drive assembly 9, which is installed in the mounting cavity. A first stationary spring 4 is disposed close to the drive assembly 9, and the first stationary spring 4 and the drive assembly 9 have a first barrier 17 disposed on the surface of the first housing 1 facing the second housing 2.

[0078] In this embodiment, the mounting cavity formed between the second housing 2 and the first housing 1 can be divided into two independent cavities by the first barrier wall 17, so that the first static spring 4 and the drive assembly 9 can be installed in the two independent cavities respectively, and the first static spring 4 and the drive assembly 9 can be separated by the first barrier wall 17 to avoid mutual interference between the first static spring 4 and the drive assembly 9.

[0079] It should be noted that in some embodiments, the drive assembly 9 may include a coil and a rotating frame. The rotating frame is hinged to a bracket in the middle, and the bracket is connected to the first housing 1. One end of the rotating frame is hinged to the middle of the pusher 6. A yoke is provided on both sides of the coil, and an armature is mounted on both sides of the rotating frame. The armature is a permanent magnet, and the armatures on both sides of the rotating frame cooperate with the yokes on both sides of the coil. A positive excitation voltage is input to the two leads of the coil, and the yoke on one side attracts the armature, causing the rotating frame to rotate clockwise and remain in position. The rotating frame drives the pusher assembly to move so that the first stationary contact 41 and the first moving contact 71, the second stationary contact 51 and the second moving contact 81 engage simultaneously. A reverse excitation voltage is input to the two leads of the coil, and the yoke on the other side attracts the armature, causing the rotating frame to rotate counterclockwise and remain in position. The rotating frame then drives the pusher assembly to move so that the first stationary contact 41 and the first moving contact 71, the second stationary contact 51 and the second moving contact 81 disengage simultaneously, thus achieving the function of two-loop control. This invention does not impose any restrictions on the structure of the driving component.

[0080] In some embodiments, such as Figure 7 and Figure 9As shown, the surface of the first retaining wall 17 facing the first stationary spring 4 has a limiting groove, and the surface of the first stationary spring 4 facing the first retaining wall 17 has a limiting protrusion 42, which engages in the limiting groove. In this way, the engagement of the limiting protrusion 42 and the limiting groove facilitates the limiting of the installation of the first stationary spring 4. Combined with the engaging effect of the aforementioned engaging groove 12 on the first stationary spring 4, this further ensures the stability of the installation position of the first stationary spring 4.

[0081] In some embodiments, such as Figure 10 , Figure 11 and Figure 13 As shown, a baffle 23 is provided on the surface of the second housing 2 facing the first housing 1, and a partition groove 101 is provided on the surface of the first housing 2 facing the second housing 2. The baffle 23 is snapped into the partition groove 101. In this way, the overall strength of the relay can be improved by the baffle 23, and the creepage distance to the side of the drive component can be increased by the baffle 23, thereby improving the withstand voltage of the relay and thus helping to meet the design requirements of small size and high withstand voltage of the relay.

[0082] Furthermore, it should be noted that as the overall size of the relay is reduced, the dimensions of the moving spring, stationary spring, pusher 6, conductive lead 44, and drive assembly 9 included in the relay are also reduced accordingly. The specific reduction range is determined based on the specific application scenario, and this application embodiment does not limit this.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A relay, characterized in that, The relay includes: A first housing and a second housing are detachably connected to form an installation cavity. A unidirectional snap-fit ​​groove is provided on the surface of the first housing facing the second housing, and the opening of the snap-fit ​​groove faces the second housing. A first stationary spring is at least partially installed in the mounting cavity and at least partially engaged in the engagement slot.

2. The relay according to claim 1, characterized in that, The first housing has a receiving structure on its surface away from the second housing. The receiving structure is used to receive at least a portion of a shielding cover. The snap-fit ​​groove is located close to the receiving structure.

3. The relay according to claim 2, characterized in that, The shielding cover includes at least a first shielding plate and a second shielding plate spaced apart. The first shielding plate covers at least a portion of the surface of the first housing facing away from the second housing, and the second shielding plate covers at least a portion of the surface of the second housing facing away from the first housing. The first shielding plate is snapped into the receiving structure.

4. The relay according to claim 2, characterized in that, On the surface of the first housing away from the second housing, a first protrusion and a second protrusion are formed on both sides of the accommodating structure in the first direction, and the two sidewalls of the first protrusion and the second protrusion opposite each other in the first direction are two groove walls of the accommodating structure opposite each other in the first direction. The snap-fit ​​groove at least partially corresponds to the position of the first protrusion; wherein, the first direction is the direction from the first protrusion to the second protrusion.

5. The relay according to claim 4, wherein the snap-fit ​​groove is at least partially formed inside the first protrusion, and the end face of the first protrusion facing away from the second housing and the portion of the snap-fit ​​groove facing the mounting cavity are positioned opposite each other in a second direction, wherein, The first direction and the second direction are perpendicular.

6. The relay according to claim 5, characterized in that, A first positioning groove is provided on the end face of the first protrusion, and the shape of the first positioning groove matches the shape of the part of the snap-fit ​​groove that faces the mounting cavity.

7. The relay according to claim 6, characterized in that, The second protrusion has a second shaped groove, and the shape of the second shaped groove matches the shape of the first shaped groove.

8. The relay according to claim 4, characterized in that, The first protrusion has a first inclined surface at its end, and the second protrusion has a second inclined surface at its end. The first inclined surface and the second inclined surface are respectively located at two opposite groove walls of the receiving structure in the first direction, so that the receiving structure forms a flared structure between the first inclined surface and the second inclined surface.

9. The relay according to claim 4, characterized in that, The dimensions of the first protrusion in the second direction and the second protrusion in the second direction are both greater than or equal to the dimensions of the portion of the snap-fit ​​groove facing the mounting cavity in the second direction.

10. The relay according to claim 4, characterized in that, The snap-fit ​​groove includes a first groove portion and a second groove portion; a third protrusion is formed on the surface of the first housing away from the second housing on the side of the receiving structure in the third direction, the third protrusion extends along the first direction, and the extension directions of the first protrusion and the second protrusion intersect the extension direction of the third protrusion; the first groove portion is formed inside the first protrusion, the second groove portion is formed inside the third protrusion, and one sidewall of the third protrusion in the third direction is the sidewall of the receiving structure in the third direction; Wherein, the third direction is perpendicular to the first direction and perpendicular to the extension direction of the third protrusion.

11. The relay according to claim 1, characterized in that, The relay further includes a first moving spring, a second stationary spring, and a second moving spring; the second stationary spring is installed in the mounting cavity; the first moving spring is disposed opposite to the first stationary spring, and the second moving spring is disposed opposite to the second stationary spring.

12. The relay according to claim 11, characterized in that, The relay includes a pusher, the first moving spring includes a first moving contact, the second moving spring includes a second moving contact, the first stationary spring includes a first stationary contact, the second stationary spring includes a second stationary contact, the first stationary contact and the first moving contact are disposed opposite to each other, and the second stationary contact and the second moving contact are disposed opposite to each other. The pusher is simultaneously driven and connected to the first moving spring and the second moving spring, and at least part of the structure of the first stationary spring overlaps with the pusher in a second direction. The pusher can move along a first direction so that the first stationary contact and the first moving contact, the second stationary contact and the second moving contact simultaneously engage or disengage, wherein the first direction and the second direction are perpendicular, and the first direction is the extension direction of the pusher.

13. The relay according to claim 11, characterized in that, A second retaining wall is also provided on the first housing; The second retaining wall is located close to the second stationary spring and on the side of the second stationary spring away from the first stationary spring. The second retaining wall is provided with a grid rib structure.

14. The relay according to claim 1, characterized in that, The first stationary spring includes a stationary spring body and a first conductive lead; The stationary spring body and the first conductive lead are fixedly connected, and the stationary spring body and the first conductive lead are bent. The snap-fit ​​groove includes a first groove portion and a second groove portion. The first groove portion is disposed opposite to the mounting cavity, and the second groove portion is located outside the mounting cavity. The stationary spring body is at least partially snapped into the first groove portion, and the first conductive lead is at least partially snapped into the second groove portion.

15. The relay according to claim 14, characterized in that, The relay further includes a third housing, and the first housing further includes an extended housing located on one side of the mounting cavity. The third housing covers the extended housing and together with the extended housing form a fixed cavity, and the second groove portion is disposed opposite the fixed cavity.

16. The relay according to claim 15, characterized in that, The first housing has a guide slot that connects the fixed cavity and the mounting cavity, and the first conductive lead extends out from the guide slot; The second housing includes a baffle that extends along the direction from the second housing to the first housing. The baffle and the guide slot are positioned opposite each other in the third direction, and the orthographic projection of the guide slot in the third direction is located within the orthographic projection of the baffle in the third direction, wherein the third direction is perpendicular to the plane in which the baffle is located.

17. The relay according to claim 15, characterized in that, The width of the baffle gradually decreases along the direction from the second housing to the first housing, and the width of the baffle at the end away from the second housing is greater than the width of the guide groove.

18. The relay according to claim 16, characterized in that, The first conductive lead extends out of the fixed cavity and extends along the extension direction of the fixed cavity. The fixed cavity includes at least one locking structure. At least one part of the first conductive lead located in the fixed cavity is engaged between the locking structure and the side wall of the first housing.

19. The relay according to claim 1, characterized in that, The relay also includes a drive assembly; The drive assembly is installed in the mounting cavity, the first stationary spring is disposed close to the drive assembly, and the first stationary spring and the drive assembly have a first retaining wall disposed on the surface of the first housing facing the second housing.

20. The relay according to claim 19, characterized in that, The first retaining wall has a limiting groove on its sidewall facing the first stationary spring, and the first stationary spring has a limiting protrusion on its sidewall facing the first retaining spring. The limiting protrusion is engaged in the limiting groove.

21. The relay according to claim 1, characterized in that, A baffle is provided on the surface of the second housing facing the first housing, and a partition groove is provided on the surface of the first housing facing the second housing, with the baffle engaging in the partition groove.

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