relay

Abstract

The application relates to a relay, comprising a shell, a base and a plurality of conductive lead-out sheets, the shell is provided with a mounting cavity, the mounting cavity is provided with a mounting opening, the base can be mounted into the mounting cavity through the mounting opening, a glue injection gap is reserved between the base and the inner wall of the shell, at least one conductive lead-out sheet comprises a bending part and a lead-out foot, the bending part is located in the glue injection gap, the bending part is arranged in a bending mode on the side of the base relative to the lead-out foot, the lead-out foot penetrates out of the shell, at least one of the shell and the base is provided with a glue guide groove at the position corresponding to the lead-out foot, and the glue guide groove is communicated with the space of the glue injection gap located on the side, away from the mounting opening, of the bending part in the extension direction of the lead-out foot. The relay of the application reduces the occurrence of the situation that glue injection is insufficient due to the blockage of the lead-out foot, is favorable for improving the glue injection quality of the glue injection gap, enables glue material to be filled into the space on the side, away from the mounting opening, of the bending part, and improves the sealing performance and the connecting strength of the glue material between the base and the shell.

Description

Technical Field

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

[0002] For relays, there is a certain gap between the relay housing and the base, so that the housing and the base can be connected and sealed by injecting glue into the gap.

[0003] In related technologies, relays typically require multiple conductive leads to extend from the housing to accommodate connections between the relay and external circuits. Furthermore, the spacing between the leads may be considered, and the conductive leads may be bent to adjust their layout.

[0004] However, with this structural design, when applying adhesive to the gap between the housing and the base, the adhesive may be insufficient due to the obstruction of the lead-out pins, resulting in inadequate sealing performance and reduced insulation between the lead-out pins due to insufficient adhesive coverage. Utility Model Content

[0005] Therefore, it is necessary to provide a relay that addresses the issue of how to improve the quality of adhesive application to enhance sealing and insulation.

[0006] This application provides a relay comprising:

[0007] The housing has a mounting cavity with a mounting opening;

[0008] The base is capable of being inserted into the mounting cavity through the mounting port, and a glue injection gap is reserved between the base and the inner wall of the outer shell;

[0009] Multiple conductive leads, at least one of the conductive leads includes a bent portion and a lead-out foot, the bent portion is located within the glue injection gap, the bent portion is bent relative to the lead-out foot on the side of the base, and the lead-out foot extends out of the outer shell;

[0010] The outer shell and the base are provided with adhesive guide grooves at the positions corresponding to the lead-out feet. Along the extension direction of the lead-out feet, the adhesive guide grooves connect the space of the adhesive injection gap located on the side of the bend away from the mounting opening.

[0011] In one embodiment, the width of the adhesive guide groove is greater than the width of the lead-out foot.

[0012] In one embodiment, the adhesive guide groove has a first groove wall and a second groove wall spaced apart in a direction perpendicular to the lead-out foot, and the lead-out foot is located between the first groove wall and the second groove wall.

[0013] In one embodiment, the relay includes a coil lead with a coil lead protruding from the housing;

[0014] Of the plurality of conductive leads, at least two adjacent conductive leads are bent on the side of the base in a direction away from the coil lead.

[0015] In one embodiment, at least one of the adhesive grooves extends along the extension direction of the corresponding lead to another adjacent conductive lead.

[0016] In one embodiment, the coil lead is disposed at one end of the base in a direction perpendicular to the lead of the conductive lead sheet, and the lead connected to the bent portion is spaced apart in a direction pointing to the other end of the base.

[0017] In one embodiment, a limiting protrusion is provided on the side of the base, and the limiting protrusion abuts against the bent portion.

[0018] In one embodiment, the limiting protrusion is strip-shaped and is arranged to intersect the bending portion in a direction parallel to the lead-out foot.

[0019] In one embodiment, the width of the limiting protrusion is less than or equal to the width of the bend.

[0020] In one embodiment, a limiting boss is provided on the side of the base. The limiting boss has an inclined surface facing the side where the lead-out foot is located. The inclination angle of the inclined surface relative to the extension direction of the lead-out foot is equal to the bending angle of the bent portion relative to the lead-out foot. The side of the bent portion facing away from the lead-out foot abuts against the inclined surface.

[0021] In the aforementioned relay, because the adhesive guide groove connects the space of the injection gap located on the side of the bend away from the mounting port along the extension direction of the lead-out pin, the adhesive material injected into the injection gap from the mounting port can flow along the adhesive guide groove without being blocked by the lead-out pin, reducing the occurrence of insufficient adhesive injection due to lead-out pin obstruction. Therefore, the technical solution of this application is beneficial to improving the adhesive injection quality of the injection gap, enabling the adhesive material to fill the space on the side of the bend away from the mounting port, improving the sealing and connection strength of the adhesive material between the base and the housing, thereby making it difficult for external atmosphere to enter the relay, and improving the insulation performance of the relay. Attached Figure Description

[0022] 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.

[0023] 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.

[0024] Figure 1 This is a bottom view of a relay according to one embodiment.

[0025] Figure 2 for Figure 1 The diagram shown is a bottom view of a portion of the relay structure with the housing removed.

[0026] Figure 3 This is a partial structural diagram of a relay according to one embodiment.

[0027] Figure 4 for Figure 3 A side view of a portion of the relay structure is shown.

[0028] Figure 5 This is a side view of a portion of the structure of a relay according to another embodiment.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Outer shell; 101. Injection gap; 20. Base; 21. Glue guide groove; 211. First groove wall; 212. Second groove wall; 22. Limiting protrusion; 23. Limiting boss; 231. Inclined surface; 30. Conductive lead piece; 31. Lead-out part; 32. Bending part; 33. Lead-out pin; 301. Common terminal lead piece; 302. Normally closed terminal lead piece; 303. Normally open terminal lead piece; 331. Common terminal lead pin; 332. Normally closed terminal lead pin; 333. Normally open terminal lead pin; 40. Coil lead piece; 41. Coil lead pin. Detailed Implementation

[0031] 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.

[0032] Combination Figure 1 and Figure 2 As shown, a relay provided in one embodiment of this application includes a housing 10, a base 20, and a plurality of conductive leads 30.

[0033] The housing 10 has a mounting cavity with a mounting opening. The base 20 can be inserted into the mounting cavity through the mounting opening. The base 20 can be used to mount relay structures such as coil assemblies or moving spring assemblies, thereby assembling these structures into the mounting cavity as a mounting carrier.

[0034] A glue injection gap 101 is reserved between the base 20 and the inner wall of the outer shell 10. By injecting glue into the glue injection gap 101, the connection, fixation and sealing of the base 20 and the outer shell 10 can be achieved.

[0035] Combination Figure 3 As shown, among the plurality of conductive leads 30, at least one conductive lead 30 includes a bent portion 32 and a lead 33.

[0036] The bent portion 32 is located within the glue injection gap 101. The bent portion 32 is bent relative to the lead-out foot 33 on the side of the base 20, which facilitates the placement of the lead-out foot 33 in a suitable position on the base 20. The lead-out foot 33 extends out of the outer casing 10.

[0037] In this embodiment, at least one of the outer casing 10 and the base 20 has a guide groove 21 at the corresponding lead-out foot 33 position. For example, Figure 3 and Figure 4As shown, a guide groove 21 is provided on the side of the base 20 corresponding to the conductive lead 30. Along the extension direction of the lead 33, the guide groove 21 connects to the space of the injection gap 101 located on the side of the bend 32 furthest from the mounting port, allowing the adhesive material injected into the injection gap 101 from the mounting port to flow along the guide groove 21 without being blocked by the lead 33, reducing the occurrence of insufficient adhesive injection due to obstruction by the lead 33. Therefore, the technical solution of this application is beneficial to improving the adhesive injection quality of the injection gap 101, enabling the adhesive material to fill the space of the bend 32 furthest from the mounting port, improving the sealing and connection strength of the adhesive material between the base 20 and the housing 10, thereby making it less likely for external atmosphere to enter the relay; that is, the improved sealing between the base 20 and the housing 10 can better isolate the gas atmosphere inside the relay from the external gas atmosphere, thus improving insulation performance.

[0038] Understandably, in some embodiments, a guide groove 21 can be provided on the inner wall of the housing 10. As long as the position of the guide groove 21 corresponds to the lead-out foot 33, and the guide groove 21 connects to the space of the injection gap 101 located on the side away from the installation port of the bend portion 32, the adhesive injected from the installation port can be guided by the guide groove 21 to the space of the injection gap 101 located on the side away from the installation port of the bend portion 32, thereby reducing the occurrence of insufficient adhesive injection due to the lead-out foot 33 blocking the flow.

[0039] In some embodiments, the width of the adhesive guide groove 21 is greater than the width of the lead-out pin 33. This allows the sufficiently large width of the adhesive guide groove 21 to increase the adhesive injection speed, while also enabling the adhesive injected into the adhesive guide groove 21 to cover the lead-out pin 33 in the width direction, thereby improving the sealing effect at the corresponding position of the lead-out pin 33 and thus enhancing the insulation performance between the lead-out pin 33 and other adjacent lead-out pins 33.

[0040] Continue to combine Figure 4 As shown, the adhesive guide groove 21 has a first groove wall 211 and a second groove wall 212 spaced apart in a direction perpendicular to the lead-out foot 33. The lead-out foot 33 is located between the first groove wall 211 and the second groove wall 212. Thus, at the corresponding location of the lead-out foot 33 in the adhesive guide groove 21, the groove wall of the adhesive guide groove 21 has a large coverage area for the lead-out foot 33. Consequently, when adhesive is injected into the adhesive guide groove 21, the adhesive can better wrap the lead-out foot 33, thereby improving the sealing performance at the lead-out foot 33 and the fixing stability of the lead-out foot 33 between the base 20 and the outer shell 10, thereby improving the pressure resistance and meeting the insulation requirements.

[0041] In some embodiments, the relay includes a coil lead 40, with the coil lead 41 extending out of the housing 10. Of the plurality of conductive leads 30, at least two adjacent conductive leads 30 are bent away from the coil lead 41 on the side of the base 20, thereby increasing the distance between the leads 33 of the conductive leads 30 and the coil lead 41, thus increasing the creepage distance and improving the insulation performance of the relay.

[0042] The number of conductive leads 30 can be configured according to the performance requirements of the relay. For ease of understanding, the structure of the relay will be further explained below in conjunction with the arrangement of the conductive leads 30, but this does not mean that the arrangement of each conductive lead 30 in the relay of this application is limited to this.

[0043] A relay is a switching device that controls the on / off state of a high-voltage circuit using low-voltage signals. The coil lead 40 is typically connected to a low-voltage signal. (Combined with...) Figure 4 As shown, the conductive lead-out piece 30 with the bent portion 32 includes, but is not limited to, a common terminal lead-out piece 301, a normally closed terminal lead-out piece 302, or a normally open terminal lead-out piece 303. Among these, the common terminal lead-out piece 301, normally closed terminal lead-out piece 302, and normally open terminal lead-out piece 303 are typically used to control the switching of high-voltage lines in the control circuit when the relay is connected to an external circuit. Therefore, the leads 33 of these leads are typically connected to the external circuit as load leads.

[0044] For ease of description, the load pins corresponding to the common terminal lead 301, normally closed terminal lead 302, and normally open terminal lead 303 are respectively designated as common terminal lead 331, normally closed terminal lead 332, and normally open terminal lead 333.

[0045] Combination Figures 2 to 4 As shown, the common terminal lead 301, normally closed terminal lead 302, and normally open terminal lead 303 are typically arranged in pairs on opposite sides of the base 20. Therefore, both opposite sides of the base 20 are provided with common terminal leads 331, normally closed terminal leads 332, and normally open terminal leads 333, with two common terminal leads 331 arranged in pairs, two normally closed terminal leads 332 arranged in pairs, and two normally open terminal leads 333 arranged in pairs. The position and arrangement order of each lead 33 are not specified here.

[0046] Combination Figure 3As shown, the conductive lead-out piece 30 includes a portion extending from the base 20 (hereinafter referred to as "lead-out portion 31"). The lead-out portion 31 may be disposed on the side of the base 20 in a vertical direction (i.e., the extending direction of the lead-out foot 33). It should be noted that, for the conductive lead-out piece 30 including the bent portion 32 and the lead-out foot 33, the bent portion 32 may be connected between the lead-out portion 31 and the lead-out foot 33.

[0047] In other embodiments, at least one of the multiple conductive leads 30 does not have a lead 33. For example, in combination with Figure 5 As shown, the normally closed lead plate 302 only has a lead-out portion 31 extending from the base 20 and a bent portion 32 connected to the lead-out portion 31, but does not have a load lead-out foot, that is, it does not have a normally closed lead-out foot 332.

[0048] In some embodiments, at least one adhesive guide groove 21 extends along the extension direction of the corresponding lead 33 to another adjacent conductive lead 30. Thus, the adhesive guide groove 21 can be used to guide the adhesive material to the area that was originally blocked by the lead 33 and is located between two adjacent conductive leads 30 in the extension direction of the lead 33.

[0049] In some embodiments, in the direction perpendicular to the lead 33 of the conductive lead 30, the coil lead 41 is disposed at one end of the base 20, and the lead 33 connected to the bending portion 32 is spaced apart in the direction pointing towards the other end of the base 20. With this structural arrangement, the bending portion 32 can be used to move the corresponding lead 33 away from the coil lead 41, thereby increasing the creepage distance between them and improving the insulation performance.

[0050] In some embodiments, a limiting protrusion 22 is provided on the side of the base 20, which abuts against the bent portion 32. In this embodiment, the limiting protrusion 22, by abutting against the bent portion 32, can position the bent portion 32, making it less likely for the bent portion 32 to move closer to the side of the base 20 and cause the lead-out pin 33 to tilt, thus ensuring that the lead-out pin 33 remains vertical relative to the base 20. This not only facilitates the connection of the lead-out pin 33 to the external circuit when the relay is in use, but also prevents the lead-out pin 33 from tilting towards the base 20 and occupying the space of the adhesive guide groove 21. Therefore, the setting of the limiting protrusion 22 can also enhance the stability of the adhesive guide groove 21's guiding effect on the adhesive material.

[0051] It should be noted that since the limiting protrusion 22 abuts against the bent portion 32, this arrangement ensures that the bent portion 32 is not in contact with the side of the base 20. That is, there is a gap between the bent portion 32 and the lead-out pin 33 and the side of the base 20. Consequently, the glue entering the glue injection gap 101 can cover the part of the bent portion 32 and the lead-out pin 33 facing the side of the base 20, thereby improving the connection stability and sealing performance, and improving the insulation between the lead-out pins 33, so as to further improve the voltage withstand performance of the relay.

[0052] In some embodiments, the limiting protrusion 22 is strip-shaped and is arranged intersecting the bending portion 32 along a direction parallel to the lead-out foot 33. With this structural arrangement, since the limiting protrusion 22 is arranged along a direction parallel to the lead-out foot 33, when glue is injected into the glue injection gap 101 along the direction of the lead-out foot 33, the glue will not be blocked by the limiting protrusion 22, and the glue can fill the space on both sides of the limiting protrusion 22.

[0053] The dimensions of the limiting protrusion 22 are not specified here. For example, the width of the limiting protrusion 22 is less than or equal to the width of the bent portion 32, thereby avoiding the limiting protrusion 22 being too wide and occupying too much space in the glue injection gap 101. Therefore, this arrangement helps to maintain sufficient glue material filling in the glue injection gap 101 to enhance the connection stability of the conductive lead 30 between the housing 10 and the base 20.

[0054] In the various embodiments of this application, the filling method of the adhesive material is not limited. Furthermore, the type of adhesive material includes, but is not limited to, epoxy resin potting compound or polyurethane potting compound.

[0055] Combination Figure 3 and Figure 4 As shown, in some embodiments, a limiting boss 23 is provided on the side of the base 20. The limiting boss 23 has an inclined surface 231 facing the side where the lead-out foot 33 is located. The inclination angle of the inclined surface 231 relative to the extending direction of the lead-out foot 33 is equal to the bending angle of the bent portion 32 relative to the lead-out foot 33. The side of the bent portion 32 facing away from the lead-out foot 33 abuts against the inclined surface 231. In this embodiment, by the inclined surface 231 of the limiting boss 23 abutting against the inclined bent portion 32, the limiting boss 23 can position the bent portion 32 in both directions parallel to and perpendicular to the lead-out foot 33, thus further preventing the lead-out foot 33 from becoming skewed.

[0056] Furthermore, the edge of the limiting boss 23 corresponding to the inclined surface 231 can be chamfered, thereby using the chamfer to guide the bent part 32 to be assembled to the side of the base 20, improving assembly convenience.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: The housing has a mounting cavity with a mounting opening; The base is capable of being inserted into the mounting cavity through the mounting port, and a glue injection gap is reserved between the base and the inner wall of the outer shell; Multiple conductive leads, at least one of the conductive leads includes a bent portion and a lead-out foot, the bent portion is located within the glue injection gap, the bent portion is bent relative to the lead-out foot on the side of the base, and the lead-out foot extends out of the outer shell; The outer shell and the base are provided with adhesive guide grooves at the positions corresponding to the lead-out feet. Along the extension direction of the lead-out feet, the adhesive guide grooves connect the space of the adhesive injection gap located on the side of the bend away from the mounting opening.

2. The relay according to claim 1, characterized in that, The width of the adhesive guide groove is greater than the width of the lead-out foot.

3. The relay according to claim 1, characterized in that, The adhesive guide groove has a first groove wall and a second groove wall spaced apart in a direction perpendicular to the lead-out foot, and the lead-out foot is located between the first groove wall and the second groove wall.

4. The relay according to claim 1, characterized in that, The relay includes a coil lead, with the coil lead protruding from the housing; Of the plurality of conductive leads, at least two adjacent conductive leads are bent on the side of the base in a direction away from the coil lead.

5. The relay according to claim 4, characterized in that, At least one of the adhesive grooves extends along the extension direction of the corresponding lead-out pin to another adjacent conductive lead-out piece.

6. The relay according to claim 4, characterized in that, In the direction perpendicular to the lead of the conductive lead sheet, the coil lead is provided corresponding to one end of the base, and the lead connected to the bent portion is spaced apart in the direction pointing to the other end of the base.

7. The relay according to claim 1, characterized in that, The base has a limiting protrusion on its side, which abuts against the bent portion.

8. The relay according to claim 7, characterized in that, The limiting protrusion is strip-shaped, and the limiting protrusion is arranged to intersect the bending portion in a direction parallel to the lead-out foot.

9. The relay according to claim 8, characterized in that, The width of the limiting protrusion is less than or equal to the width of the bent portion.

10. The relay according to any one of claims 1 to 9, characterized in that, The base has a limiting boss on its side, and the limiting boss has an inclined surface facing the side where the lead-out foot is located. The inclination angle of the inclined surface relative to the extension direction of the lead-out foot is equal to the bending angle of the bent portion relative to the lead-out foot. The side of the bent portion facing away from the lead-out foot abuts against the inclined surface.

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