A high-frequency relay

Abstract

The application discloses a high-frequency relay, which comprises a base part; the base part comprises a coil, a static spring reed, a coil terminal and a first plastic body which is used to integrate the coil, the static spring reed and the coil terminal into an integral part by injection molding; the static spring reed comprises a COM terminal, a NO terminal and / or a NC terminal; the top surface of the first plastic body is provided with an isolation groove between the upper terminal of the NO terminal and the first upper terminal of the COM terminal and / or between the upper terminal of the NC terminal and the second upper terminal of the COM terminal; the bottom surface of the isolation groove is lower than the plane where the upper terminals on both sides are located, and the length projection of the isolation groove in the two direction completely covers the upper terminals on both sides. The application can effectively improve the isolation degree between the first relevant metal part of the COM terminal and the relevant metal part of the NO terminal and / or between the second relevant metal part of the COM terminal and the relevant metal part of the NC terminal.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a high-frequency relay. Background Technology

[0002] A high-frequency relay is a relay used to switch high-frequency circuits. Its electromagnetic system is the same as that of a regular electromagnetic relay. In essence, a high-frequency relay is an extension of a signal relay in terms of high-frequency signal transmission. Structurally, it retains the small size, rotating armature structure, and integrated injection-molded base design of signal relays. Isolation is one of the three major high-frequency characteristic indicators of a high-frequency relay, characterizing its ability to resist crosstalk between disconnecting contacts or contact groups, which is crucial for user applications. Due to the small size of high-frequency relays, the distance between the relevant metal parts of the COM terminal and the relevant metal parts of the NO terminal (or NC terminal) on the base is very small. Simultaneously, the dielectric constant of the plastic is limited, allowing high-frequency signals to easily penetrate the plastic between the relevant metal parts, resulting in poor isolation performance and failing to meet user requirements for crosstalk immunity. See also... Figure 1 , Figure 2 As shown, the base portion 100 of the prior art high-frequency relay includes a coil (including an iron core) 200, coil terminals (i.e., control terminals) 300, a stationary spring (i.e., output terminals) 400, and a plastic portion 500 that injection molds the coil 200, coil terminals 300, and stationary spring 400 together. The stationary spring 400 includes a COM terminal 401, a NO terminal 402, and an NC terminal 403. The COM terminal 401 is located in the middle, while the NO terminal 402 and NC terminal 403 are located at the COM terminal 401 and NC terminal 403, respectively. On both sides of 01, due to their small size, the shortest distances M1 and M2 between the first related metal part 4011 of the COM terminal 401 and the related metal part 4021 of the NO terminal 402, and between the second related metal part 4012 of the COM terminal 401 and the related metal part 4031 of the NC terminal 403 are very small. High-frequency signals can easily pass through the plastic between the related metal parts (i.e., the plastic body of the plastic part 500 at the corresponding position), so that the user's requirements for the anti-crosstalk performance of the high-frequency relay cannot be met.

[0003] In addition, such as Figure 1 As shown, when the base portion 100 of the prior art high-frequency relay is molded, in order to facilitate demolding after injection molding, recesses 501 are usually provided on both sides of the base portion. Since the formation of the recesses 501 affects the flow of the encapsulant when the base portion is assembled with the housing, the encapsulant cannot completely cover the metal part, resulting in a decrease in the dielectric withstand performance between the metal parts. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-frequency relay that, through structural improvements, can effectively enhance the isolation between the first relevant metal portion of the COM terminal and the relevant metal portion of the NO terminal, and / or between the second relevant metal portion of the COM terminal and the relevant metal portion of the NC terminal.

[0005] The technical solution adopted by this invention to solve its technical problem is: a high-frequency relay, including a base portion; the base portion includes a coil, a stationary spring, coil terminals, and a first plastic body that integrates the coil, stationary spring, and coil terminals into a single unit by injection molding; the stationary spring includes two COM terminals, two NO terminals, and / or two NC terminals; the two coil terminals, two COM terminals, two NO terminals, and / or two NC terminals are respectively mounted on both sides of the length direction of the first plastic body, and the NO terminals and NC terminals are located on both sides of the COM terminals; the NO terminals, COM terminals... The terminal and the NC terminal each include an upper terminal bent into a thickness distributed vertically. The upper terminal of the COM terminal includes a first upper terminal facing the NO terminal and a second upper terminal facing the NC terminal. An isolation groove is provided on the top surface of the first plastic body between the upper terminal of the NO terminal and the first upper terminal of the COM terminal and / or between the upper terminal of the NC terminal and the second upper terminal of the COM terminal. The isolation groove is provided along the width direction of the first plastic body, the bottom surface of the isolation groove is lower than the plane where the upper terminals on both sides are located, and the projection of the length of the isolation groove in both directions completely covers the upper terminals on both sides.

[0006] Along the length of the first plastic body, the coil terminals, NO terminals, COM terminals, and NC terminals are arranged in sequence, or the coil terminals, NC terminals, COM terminals, and NO terminals are arranged in sequence.

[0007] The high-frequency relay also includes a moving spring armature component, which is mounted on the top surface of the base portion. The top surface of the base portion is provided with a clearance groove for adapting the moving spring armature component. The isolation groove is a through groove, with one end of the length of the isolation groove extending out of the corresponding side of the first plastic body and the other end of the length of the isolation groove extending into the clearance groove of the base portion.

[0008] The isolation groove is also provided with a barrier wall that is transparent in length, and the position of the barrier wall is staggered with the shortest distance between the upper terminals on both sides of the isolation groove.

[0009] The position of the barrier wall is offset from the upper terminals on both sides of the isolation groove.

[0010] The barrier wall is located at the other end of the length of the isolation trench.

[0011] The height of the barrier wall is not higher than the height of the two sides of the isolation groove.

[0012] In the cross-section of the isolation groove, the width of the groove opening is greater than the width of the groove bottom to facilitate demolding.

[0013] When isolation grooves are provided between the upper terminal of the NO terminal and the first upper terminal of the COM terminal, and between the upper terminal of the NC terminal and the second upper terminal of the COM terminal, the isolation grooves between the upper terminal of the NO terminal and the first upper terminal of the COM terminal, and between the upper terminal of the NC terminal and the second upper terminal of the COM terminal, are asymmetrically distributed relative to the COM terminal.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention employs an isolation groove on the top surface of the first plastic body, between the upper terminal of the NO terminal and the first upper terminal of the COM terminal, and / or between the upper terminal of the NC terminal and the second upper terminal of the COM terminal. The isolation groove is positioned along the width of the first plastic body, with its bottom surface lower than the plane containing the upper terminals on both sides. The projection of the length of the isolation groove onto both sides completely covers the upper terminals on both sides. This structure effectively improves the isolation between the first relevant metal portion of the COM terminal and the relevant metal portion of the NO terminal, and / or between the second relevant metal portion of the COM terminal and the relevant metal portion of the NC terminal, thereby meeting the user's requirements for the anti-crosstalk performance of high-frequency relays.

[0016] 2. This invention employs a barrier wall within the isolation groove, extending the length of the isolation groove and offsetting the position of the barrier wall from the shortest distance between the upper terminals on both sides of the isolation groove. This structure prevents the encapsulating adhesive from flowing into the clearance groove of the actuating mechanism (i.e., the moving spring armature component) and interfering with the relay operation.

[0017] 3. This invention employs an asymmetrical distribution of the isolation grooves between the upper terminals of the NO and COM terminals, and between the upper terminals of the NC and COM terminals, relative to the COM terminal. This structure clearly distinguishes the structural features of the normally open (NO) and normally closed (NC) terminals, allowing for rapid orientation identification of base parts in automated equipment, improving production efficiency, and effectively preventing assembly errors.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the high-frequency relay of the present invention is not limited to the embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the base portion of a high-frequency relay in the prior art;

[0020] Figure 2 This is a schematic diagram showing the distribution of the stationary spring and coil terminals of a high-frequency relay in the prior art;

[0021] Figure 3 This is a three-dimensional structural diagram of the base portion according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram showing the distribution of the stationary spring sheet and coil terminals according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 3 Enlarged diagram of part A in the diagram;

[0024] Figure 6 yes Figure 3 Enlarged schematic diagram of part B in the diagram;

[0025] Figure 7 This is a front view of the base portion according to an embodiment of the present invention;

[0026] Figure 8 It is along Figure 7 A cross-sectional view of the CC line in the diagram;

[0027] Figure 9 This is a schematic diagram of the mold parting line of the base portion of the present invention. Detailed Implementation

[0028] Example

[0029] See Figures 3 to 8As shown, a high-frequency relay of the present invention includes a base portion 1; the base portion 1 includes a coil 2 (including an iron core, a coil frame, and enameled wire, etc.), a stationary spring 3, coil terminals 4, and a first plastic body 5 that integrates the coil 2, the stationary spring 3, and the coil terminals 4 into a single integral part by injection molding; in this embodiment, the stationary spring includes two COM terminals 31, two NO terminals 32, and two NC terminals 33. Of course, depending on the needs, it can also have only COM terminals and NO terminals, or only COM terminals and NC terminals; the first plastic body Along each side of the length direction of 5, the coil terminal 4, NO terminal 32, COM terminal 31, and NC terminal 33 are arranged in sequence; in other embodiments, the coil terminal, NC terminal, COM terminal, and NO terminal may also be arranged in sequence; the NO terminal 32, COM terminal 31, and NC terminal 33 each include an upper terminal bent into a thickness distributed vertically, that is, the NO terminal 32 includes an upper terminal 321 bent into a thickness distributed vertically, and the NC terminal 33 includes an upper terminal 321 bent into a thickness distributed vertically. Sub-331, the upper terminal of the COM terminal includes a first upper terminal 311 facing the NO terminal and a second upper terminal 312 facing the NC terminal, wherein the planes containing the first upper terminal 311 and the second upper terminal 312 of the COM terminal are at different heights; on the top surface of the first plastic body 5, an isolation groove 51 is provided between the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31, and an isolation groove 51 is provided between the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31. The isolation grooves 51 and 52 are both arranged along the width direction of the first plastic body 5. The bottom surface of the isolation groove 51 is lower than the plane where the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31 are located. When the planes where the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31 are located are not the same, the bottom surface of the isolation groove 51 is lower than the lowest one. The projection of the length of the isolation groove 51 in both directions completely covers the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31. Similarly, the bottom surface of the isolation groove 52 is lower than the plane where the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31 are located. The projection of the length of the isolation groove 52 in both directions completely covers the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31.

[0030] In this embodiment, the high-frequency relay further includes a moving spring armature component (not shown in the figure). The moving spring armature component is installed on the top surface of the base portion 1. The top surface of the base portion 1 is provided with a relief groove 11 for adapting to the moving spring armature component. The isolation grooves 51 and 52 are both through grooves. One end of the length of the isolation grooves 51 and 52 respectively extends out of the corresponding side of the first plastic body 5, and the other end of the length of the isolation grooves 51 and 52 respectively extends into the relief groove 11 of the base portion 1.

[0031] In this embodiment, the isolation groove 51 is further provided with a barrier wall 53 that is transparent in length, and the position of the barrier wall 53 is staggered with the shortest distance L1 between the upper terminals on both sides of the isolation groove (i.e., the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31). Similarly, the isolation groove 52 is further provided with a barrier wall 54 that is transparent in length, and the position of the barrier wall 54 is staggered with the shortest distance L2 between the upper terminals on both sides of the isolation groove (i.e., the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31). Even better, the positions of the barrier walls are all staggered with the upper terminals on both sides of the isolation groove.

[0032] In this embodiment, the height of the barrier walls 53 and 54 is not higher than the height of the two sides of the isolation grooves 51 and 52.

[0033] In this embodiment, the width of the opening of the isolation grooves 51 and 52 is greater than the width of the bottom of the groove in the cross-section, so as to facilitate demolding.

[0034] In this embodiment, the barrier wall 53 is located at the other end of the length of the isolation groove 51; the barrier wall 54 is located at the other end of the length of the isolation groove 52.

[0035] In this embodiment, the isolation groove 51 between the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31, and the isolation groove 52 between the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31, are asymmetrically distributed relative to the COM terminal 31.

[0036] This invention discloses a high-frequency relay, employing isolation grooves 51 and 52 respectively provided on the top surface of a first plastic body 5 between the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31, and between the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31. The isolation grooves 51 and 52 are arranged along the width direction of the first plastic body 5, with their bottom surfaces lower than the planes where the upper terminals are located on both sides. The projection of the length of the isolation grooves 51 and 52 in both directions completely covers the upper terminals on both sides. This structure effectively increases the isolation between the first relevant metal portion of the COM terminal (i.e., the first upper terminal 311) and the relevant metal portion of the NO terminal 32 (i.e., the upper terminal 321), and between the second relevant metal portion of the COM terminal 31 (i.e., the second upper terminal 312) and the relevant metal portion of the NC terminal 33 (i.e., the upper terminal 331), thereby meeting the user's requirements for the anti-crosstalk performance of the high-frequency relay.

[0037] This invention discloses a high-frequency relay that incorporates isolation slots 51 and 52 further equipped with barrier walls 53 and 54 of continuous length, with the positions of the barrier walls 53 and 54 staggered from the shortest distance between the upper terminals on both sides of the isolation slots 51 and 52. This structure prevents plastic sealant from flowing into the clearance slot of the actuating mechanism (i.e., the moving spring armature component) and interfering with the relay's operation.

[0038] This invention discloses a high-frequency relay in which the isolation groove 51 between the upper terminal 321 of the NO terminal 32 and the first upper terminal 311 of the COM terminal 31, and the isolation groove 52 between the upper terminal 331 of the NC terminal 33 and the second upper terminal 312 of the COM terminal 31, are asymmetrically distributed relative to the COM terminal 31. This structure of the invention makes the structural features of the normally open terminal (NO terminal) and the normally closed terminal (NC terminal) clearly distinguishable, allowing for rapid identification of the orientation of base parts in automated equipment, improving production efficiency, and effectively avoiding assembly errors.

[0039] The high-frequency relay of the present invention, due to the inclusion of isolation grooves 51 and 52, increases the internal space of the relay after plastic encapsulation, which can further dilute the concentration of volatile organic gases inside and improve the relay's electrical withstand performance. Furthermore, it can reduce the amount of plastic material used in the base, thereby lowering the relay cost.

[0040] The present invention provides a high-frequency relay with an isolation groove structure that balances the frictional forces between the upper and lower molds and the part during the injection molding process, facilitating part demolding. The high-frequency relay of the present invention, on the one hand, utilizes the mold boundary line S2 (e.g., Figure 9The changes shown can further increase the area of ​​the upper part, which is beneficial for demolding the part; on the other hand, demolding can be assisted by setting the width of the groove opening to be greater than the width of the groove bottom in the cross-section of the isolation groove.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A high-frequency relay, comprising a base portion; the base portion comprising a coil, a stationary spring, coil terminals, and a first plastic body in which the coil, stationary spring, and coil terminals are assembled into a single integral part by injection molding; the stationary spring includes two COM terminals, two NO terminals, and / or two NC terminals; the two coil terminals, two COM terminals, two NO terminals, and / or two NC terminals are respectively mounted on both sides of the length direction of the first plastic body, and the NO terminals and NC terminals are located on both sides of the COM terminals; the NO terminals, COM terminals, and NC terminals each include upper terminals bent into a thickness distributed vertically, the upper terminals of the COM terminals including a first upper terminal towards the NO terminal and a second upper terminal towards the NC terminal; characterized in that: The top surface of the first plastic body has an isolation groove between the upper terminal of the NO terminal and the first upper terminal of the COM terminal and / or between the upper terminal of the NC terminal and the second upper terminal of the COM terminal; the isolation groove is arranged along the width direction of the first plastic body, the bottom surface of the isolation groove is lower than the plane where the upper terminals on both sides are located, and the projection of the length of the isolation groove in both directions completely covers the upper terminals on both sides.

2. The high-frequency relay according to claim 1, characterized in that: Along the length of the first plastic body, the coil terminals, NO terminals, COM terminals, and NC terminals are arranged in sequence, or the coil terminals, NC terminals, COM terminals, and NO terminals are arranged in sequence.

3. The high-frequency relay according to claim 1 or 2, characterized in that: The high-frequency relay also includes a moving spring armature component, which is mounted on the top surface of the base portion. The top surface of the base portion is provided with a clearance groove for adapting the moving spring armature component. The isolation groove is a through groove, with one end of the length of the isolation groove extending out of the corresponding side of the first plastic body and the other end of the length of the isolation groove extending into the clearance groove of the base portion.

4. The high-frequency relay according to claim 3, characterized in that: The isolation groove is also provided with a barrier wall that is transparent in length, and the position of the barrier wall is staggered with the shortest distance between the upper terminals on both sides of the isolation groove.

5. The high-frequency relay according to claim 4, characterized in that: The position of the barrier wall is offset from the upper terminals on both sides of the isolation groove.

6. The high-frequency relay according to claim 5, characterized in that: The barrier wall is located at the other end of the length of the isolation trench.

7. The high-frequency relay according to claim 4, 5, or 6, characterized in that: The height of the barrier wall is not higher than the height of the two sides of the isolation groove.

8. The high-frequency relay according to claim 6, characterized in that: In the cross-section of the isolation groove, the width of the groove opening is greater than the width of the groove bottom to facilitate demolding.

9. The high-frequency relay according to claim 1, characterized in that: When isolation grooves are provided between the upper terminal of the NO terminal and the first upper terminal of the COM terminal, and between the upper terminal of the NC terminal and the second upper terminal of the COM terminal, the isolation grooves between the upper terminal of the NO terminal and the first upper terminal of the COM terminal, and between the upper terminal of the NC terminal and the second upper terminal of the COM terminal, are asymmetrically distributed relative to the COM terminal.

Images