Reed assembly for surface-mounted radio frequency relay

Abstract

The invention discloses a reed assembly for a surface-mounted radio frequency relay, which comprises a transmission reed and a radio frequency reed, the radio frequency reed is connected with the transmission reed, the transmission reed is used for driving the radio frequency reed to act, one surface of the radio frequency reed corresponding to a static contact is provided with a convex hull, and the radio frequency reed is in contact with the static contact through the convex hull. According to the invention, through the arrangement of the convex hulls, when the radio frequency reed acts in place, the contact area between the radio frequency reed and the static contact is reduced, and the pressure intensity between the radio frequency reed and the static contact is improved, so that a frost film on the surface of the contact at a low temperature can be effectively broken, and the low-temperature action reliability of the product is ensured. According to the surface-mounted radio frequency relay, a small change is adopted, a big problem of an original surface-mounted radio frequency relay is solved, the upgraded surface-mounted radio frequency relay can be directly assembled by adopting an original assembly production line, iteration updating of a product can be completed without greatly adjusting the product line, and the iteration cost of the product line is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of surface-mount radio frequency relay technology, and more particularly to a reed assembly for surface-mount radio frequency relays. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Surface-mount radio frequency (RF) relays are widely used in terrestrial communications, electronic warfare, and automated control systems due to their advantages such as small size, high power, excellent RF performance, and ease of integration. Surface-mount RF relays are primarily used for microwave signal transmission and transmission path switching; they are devices that use a small DC signal to control mechanical actions to switch microwave signals. The reed assembly is a crucial actuator for achieving microwave signal transmission.

[0004] The core function of a surface-mount RF relay is to conduct or switch RF signals by closing and opening mechanical contacts. In low-temperature and high-humidity environments, this mechanical action faces several challenges. Moisture and impurities in the microwave channel can form a layer of frost-like film on the surface of the moving and stationary contacts of the RF reed. Under normal operation, the relay is unable to break through this frost film, leading to incomplete contact of the RF contacts, resulting in deterioration of the product's RF performance or even failure.

[0005] Because surface mount RF relays are small in size and their internal elastic and magnetic components cannot be made large, their contact pressure values ​​are much lower than those of conventional RF relays. It is difficult to solve this problem by increasing the size. Therefore, this application provides a reed assembly for surface mount RF relays to solve this problem. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a reed assembly for surface-mount radio frequency relays.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A reed assembly for a surface-mount radio frequency relay includes a drive reed and a radio frequency reed. The radio frequency reed is connected to the drive reed, and the drive reed is used to drive the radio frequency reed to move. One side of the radio frequency reed corresponding to the stationary contact is provided with a protrusion, which contacts the stationary contact through the protrusion.

[0008] Furthermore, the transmission spring is connected to the middle of the radio frequency spring, and the convex bulge is located at both ends of the radio frequency spring.

[0009] Furthermore, the convex hull makes point contact with the stationary contact point.

[0010] Furthermore, the convex hull is hemispherical, with its spherical surface facing the direction of the stationary contact point.

[0011] Furthermore, the convex hull makes contact with the stationary contact point in the form of a line contact.

[0012] Furthermore, the convex hull is semi-cylindrical, with the axis of the semi-cylindrical part parallel to the surface of the radio frequency spring.

[0013] Furthermore, the transmission spring is U-shaped, and radio frequency springs are connected to both ends of the U-shaped transmission spring.

[0014] The beneficial effects of this invention are reflected in: In this application, by setting the convex hull, when the RF spring is in position, the contact area between the RF spring and the stationary contact will be reduced, and the pressure between the RF spring and the stationary contact will be increased. This can effectively break the frost film on the contact surface at low temperatures, ensuring the reliability of the product's low-temperature operation.

[0015] This application employs a minor modification to solve a major problem with the original surface-mount RF relays. Furthermore, the upgraded surface-mount RF relays can be directly assembled using the existing assembly lines without requiring significant adjustments to the product line, thus greatly reducing the iteration costs of the product line. Attached Figure Description

[0016] Figure 1 The structural intent of a traditional reed assembly; Figure 2 This is a schematic diagram of the structure of the reed assembly described in this invention; Figure 3 This is a front view of the radio frequency reed described in this invention; Figure 4 This is a side view of the radio frequency reed described in this invention.

[0017] In the picture: 1. Transmission spring; 2. Radio frequency spring; 21. Convex bulge; 3. Injection-molded plastics. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 , Figure 1The structure is a traditional reed assembly, including a drive reed 1, an RF reed 2, and injection-molded plastic 3. The RF reed 2 is connected to the drive reed 1 through the injection-molded plastic 3. The drive reed 1 is used to drive the RF reed 2 to move. The RF reed 2 has a planar structure. When the RF reed 2 moves to a fixed position, the RF reed 2 and the stationary contact (the stationary contact is usually a surface for contact, not a point) are in surface contact. The magnitude of the contact force is basically unchanged. However, because the contact area between the RF reed 2 and the stationary contact is large, the pressure during contact is reduced. In low-temperature environments, the frost film cannot be broken, which affects the contact reliability of the RF contact.

[0020] To address the aforementioned problems, this invention discloses a reed assembly for surface-mount radio frequency relays.

[0021] Example 1: Please see Figure 2-4 The reed assembly for surface-mount RF relays includes a drive reed 1 and an RF reed 2. The RF reed 2 is connected to the drive reed 1. The drive reed 1 is used to drive the RF reed 2. The RF reed 2 has a protrusion 21 on one side of the corresponding stationary contact (not shown in the figure) and contacts the stationary contact through the protrusion 21.

[0022] In this application, by setting the convex hull 21, when the RF spring 2 is in position, the contact area between the RF spring 2 and the stationary contact will decrease. At the same time, since only the RF spring 2 has been changed and everything else remains unchanged, the pressure between the RF spring 2 and the stationary contact will increase while the contact area decreases. This can effectively break the frost film on the surface of the contact at low temperatures and ensure the reliability of the product's low-temperature operation.

[0023] It should be noted that the transmission spring 1 and the radio frequency spring 2 can still be connected using a traditional structural form, i.e., as shown in the example. Figure 1 As shown, the radio frequency spring 2 is connected to the transmission spring 1 via injection-molded plastic 3.

[0024] In one embodiment, the transmission spring 1 is connected to the middle of the radio frequency spring 2, and the convex bulge 21 is located at both ends of the radio frequency spring 2.

[0025] In practice, since this application only adjusts the structure of the RF spring 2 and nothing else is changed, the distance that the transmission spring 1 can drive the RF spring 2 to move is also unchanged. Since the RF spring 2 is usually soft and can produce elastic deformation, after the convex 21 contacts the stationary contact, the transmission spring 1 will continue to drive the middle part of the RF spring 2 to move downward (the moving distance is the height of the convex 21), continuously applying pressure to the convex 21. At this time, the RF spring 2 will produce an arc-shaped bend, which will force the convex 21 to continuously and reliably contact the stationary contact. While further increasing the contact pressure and breaking the frost film on the contact surface at low temperature, it can overcome poor contact caused by vibration or low temperature deformation, and further ensure the reliability of the product's low temperature operation.

[0026] In one embodiment, the convex bulge 21 makes point contact with the stationary contact point. By using point contact, the contact area is further reduced, thereby increasing the pressure during contact and significantly improving the reliability of the product's low-temperature contact.

[0027] In one embodiment, the convex bulge 21 is hemispherical, with its spherical surface facing the stationary contact point.

[0028] In one embodiment, the RF spring 2 is located directly below the drive spring 1 and is connected to the drive spring 1 at intervals via injection-molded plastic 3. This design shortens the lever arm between the drive spring 1 and the RF spring 2, allowing a greater force to be transmitted to the RF spring 2. Combined with the aforementioned convex bulge 21 design, this further enhances the pressure between the RF spring 2 and the stationary contact, ensuring effective breaking of the frost film on the contact surface at low temperatures and further guaranteeing the reliability of the product's low-temperature operation.

[0029] It should be noted that the radio frequency spring 2 and the transmission spring 1 are separated by injection-molded plastic 3 to ensure that the two are not conductive.

[0030] In one embodiment, the transmission spring 1 is U-shaped, and radio frequency springs 2 are connected to both ends of the U-shape of the transmission spring 1.

[0031] Example 2: The only difference between this embodiment and Embodiment 1 is the contact pattern between the convex hull 21 and the stationary contact, as detailed below: In this embodiment, the convex bulge 21 makes line contact with the stationary contact point. Although the pressure of line contact is not as high as that of point contact, it can further ensure the reliability of the contact, reduce the probability of poor contact, and with the combined support of other measures in Embodiment 1, it still has the pressure to break the frost film, thus exhibiting good overall performance.

[0032] In this embodiment, the convex bulge 21 is semi-cylindrical, and the axis of the semi-cylindrical part is parallel to the surface of the radio frequency spring 2.

[0033] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0035] Additionally, "multiple" refers to two or more.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reed assembly for a surface-mount radio frequency relay, characterized in that, It includes a transmission spring (1) and an RF spring (2). The RF spring (2) is connected to the transmission spring (1). The transmission spring (1) is used to drive the RF spring (2) to move. The RF spring (2) has a protrusion (21) on one side of the corresponding stationary contact, and contacts the stationary contact through the protrusion (21).

2. The reed assembly for a surface-mount radio frequency relay according to claim 1, characterized in that, The transmission spring (1) is connected to the middle of the radio frequency spring (2), and the convex hull (21) is located at both ends of the radio frequency spring (2).

3. The reed assembly for a surface-mount radio frequency relay according to claim 1 or 2, characterized in that, The convex hull (21) makes point contact with the stationary contact point.

4. The reed assembly for a surface-mount radio frequency relay according to claim 3, characterized in that, The convex hull (21) is hemispherical, with its spherical surface facing the direction of the stationary contact point.

5. The reed assembly for a surface-mount radio frequency relay according to claim 1 or 2, characterized in that, The convex hull (21) makes contact with the stationary contact point in the form of line contact.

6. The reed assembly for a surface-mount radio frequency relay according to claim 5, characterized in that, The convex hull (21) is semi-cylindrical, and the axis of the semi-cylindrical part is parallel to the surface of the radio frequency spring (2).

7. The reed assembly for a surface-mount radio frequency relay according to claim 1 or 2, characterized in that, The transmission spring (1) is U-shaped, and radio frequency springs (2) are connected to both ends of the U-shape of the transmission spring (1).

Images