Reed reset mechanism for single-pole multi-throw loaded radio frequency switch

Abstract

The utility model belongs to the technical field of radio frequency switches, and particularly relates to a reed reset mechanism for a single-pole multi-throw loaded radio frequency switch. The device comprises a bearing plate, a connecting rod arranged on the bearing plate, a plurality of guide columns arranged on the connecting rod and a reset reed arranged between the connecting rod and the bearing plate. Compared with the prior art, the technical scheme provided by the utility model has the following advantages that the conducting strips are linked in parallel through the connecting rods, the conducting strips can be ensured not to deform and can be in stable contact with the terminals, and through the seesaw type reset reeds, not only can the reeds be reset by virtue of self elasticity, but also more importantly, when a load end is switched on, the conducting strips can be stably contacted with the terminals. The radio frequency end is inevitably tilted, and the load end is inevitably tilted when the radio frequency end is connected, so that the stability of single-side connection is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of radio frequency switch, concretely relates to a single -pole multi -throw with load radio frequency switch reed reset mechanism. BACKGROUND

[0002] RF coaxial electromechanical switch is a kind of microwave component using electromagnetic relay to control RF path switching, which almost transmits microwave signal without distortion.RF coaxial electromechanical switch is an important RF component to realize the automation of automatic test system, and plays the role of signal routing, and the reliability of RF switch directly determines the performance of automatic test system.

[0003] At present, RF switch generally includes electromagnet and soft iron bar close to electromagnet, movable contact is connected to soft magnetic bar and is kept in its normal position by spring.When electromagnet is powered, it exerts force on soft magnetic bar, overcomes the tension of spring, and moves contact to close or open circuit.When electromagnet is powered off, contact returns to original position.On the one hand, due to very small volume, spring is difficult to assemble, and due to the characteristics of conductor spring sheet material, through spring point reset, deformation is easily caused, thereby finally leading to poor contact of switch, which affects the performance of coaxial RF switch.

[0004] A coaxial RF switch capable of preventing poor contact is provided in Chinese patent CN209912779U.By setting a clamping block below the conductor reed, setting a clamping groove in the upper part of the fixed conductor and setting a clamping block in the clamping groove, when the conductor reed descends, the clamping block is clamped with the clamping groove, and the clamping block is clamped tightly, so that loosening is not caused, and the problem of poor contact is not caused, thereby improving the performance of coaxial RF switch.A reset spring is arranged on the clamping block, and when the conductor reed rises, the clamping block resets, and is clamped again after next contact.Such structure is complex, and the pressure applied to the upper part or the force required to remove the clamping block from the clamping groove is greatly increased. UTILITY MODEL CONTENTS

[0005] The utility model provides a single -pole multi -throw with load radio frequency switch reed reset mechanism to solve the problem of difficult spring reset assembly and easy failure at present.

[0006] In order to solve the above technical problem, the technical scheme of the utility model is as follows: the single -pole multi -throw with load radio frequency switch reed reset mechanism includes a bearing plate, a connecting rod arranged on the bearing plate, a plurality of guide columns arranged on the connecting rod and a reset reed arranged between the connecting rod and the bearing plate.

[0007] One end of the guide column is connected with the connecting rod, and the other end penetrates the bearing plate and is connected with the conductive sheet below the bearing plate, and the connecting rod and the conductive sheet are linked through the guide column therebetween.

[0008] The conductive sheet is used for direct conduction between terminals.

[0009] Optionally, the linkage includes a row of radio frequency linkages and load linkages, wherein the radio frequency linkages are used to switch the radio frequency terminals and the common terminal on and off, and the load linkages are used to switch the radio frequency terminals and the load terminal on and off.

[0010] Optionally, the reset spring includes a rotation fulcrum, a first rocker plate and a second rocker plate located on both sides of the fulcrum, the first rocker plate being located between the radio frequency connecting rod and the bearing plate, and the second rocker plate being located between the load connecting rod and the bearing plate.

[0011] Optionally, the reset spring is a rectangular frame, the width of which is greater than the width of the connecting rod, and the fulcrum is an arc-shaped protrusion arranged opposite to the two long sides of the frame.

[0012] Optionally, the frame has a limiting structure on its two short sides, and the connecting rod has a notch on the side near the bearing plate for accommodating the limiting structure. The limiting structure cooperates with the notch to limit the range of movement of the reset spring in the extension direction of the connecting rod.

[0013] Optionally, the limiting structure is an arc-shaped reinforcing rib with an arc facing the center.

[0014] Optionally, the support plate is provided with a groove for accommodating the connecting rod and the return spring.

[0015] Optionally, a protruding edge extends from the outer side of the long side of the first rocker and / or the second rocker, the protruding edge being used to limit the position of the reset spring in the width direction within the groove.

[0016] Optionally, the protruding edge is disposed on the first rocker or the second rocker, and the protruding edge is disposed at intervals in a hill-like pattern.

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages: By linking the conductive sheet in parallel with the connecting rod, it can be ensured that the conductive sheet does not deform and can make stable contact with the terminal. By using the seesaw-type reset spring, not only can the spring itself be reset elastically, but more importantly, it can ensure that when the load end is connected, the RF end will inevitably tilt up, and when the RF end is connected, the load end will inevitably tilt up, thus ensuring the stability of unilateral connection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the terminal distribution of the single-pole six-throw RF switch with load described in this utility model;

[0019] Figure 2 This is a schematic diagram of a specific embodiment of the reed reset mechanism for a single-pole multi-throw radio frequency switch with load according to this utility model;

[0020] Figure 3This is a schematic diagram of a specific embodiment of the reset spring described in this utility model;

[0021] Figure 4 This is a schematic diagram of a specific embodiment of the connection between the connecting rod and the return spring of this utility model.

[0022] As shown in the figure:

[0023] 11-Common terminal, 12-RF terminal, 13-Load terminal, 50-Conductive sheet;

[0024] 20-Bearing plate, 21-Groove, 30-Connecting rod, 31-RF connecting rod, 32-Load connecting rod, 33-Notch, 40-Guide post;

[0025] 60-Reset spring, 61-Fulcrum, 62-First rocker, 63-Second rocker, 64-Limiting structure, 65-Protruding edge. Detailed Implementation

[0026] For ease of understanding, the reed reset mechanism for a single-pole multi-throw RF switch with load is described below with reference to embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation and positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 As shown, this embodiment uses a single-pole six-throw as an example. The center is the common terminal 11, the six radio frequency terminals 12 are distributed on the inner circumference, and the six load terminals 13 are distributed on the outer circumference. The radio frequency terminals 12 and the corresponding load terminals 13 are located on the same radius.

[0030] like Figure 2 As shown, the single-pole multi-throw RF switch with load reed reset mechanism includes a support plate 20, six sets of connecting rods 30 disposed on the support plate 20, each set of connecting rods including a RF connecting rod 31 and a load connecting rod 32 arranged in a row. The RF connecting rod 31 is used to switch the RF terminal 12 and the common terminal 11, and the load connecting rod 32 is used to switch the RF terminal 12 and the load terminal 13. Two guide posts 40 are respectively provided on the RF connecting rod 31 or the load connecting rod 32. See also... Figure 1 One end of the guide post 40 is connected to the connecting rod 30, and the other end passes through the support plate 20 and is connected to the conductive sheet 50 located under the support plate 10. The connecting rod 30 and the conductive sheet 50 are linked through the guide post 40 between them. The conductive sheet 50 is used for direct conduction between the terminals. A reset spring 60 is provided between the connecting rod 30 and the support plate 20.

[0031] like Figure 3 As shown, the reset spring 60 includes a rotation fulcrum 61, a first rocker plate 62 and a second rocker plate 63 located on both sides of the fulcrum 61, and so on. Figure 2 The first rocker 61 is located between the radio frequency link 31 and the support plate 20, and the second rocker 63 is located between the load link 32 and the support plate 20.

[0032] See also Figure 2 and Figure 3 The reset spring 60 is a rectangular frame, the width D of which is greater than the width d of the connecting rod, and the fulcrum 61 is an arc-shaped protrusion arranged opposite to the two long sides of the frame.

[0033] See also Figure 3 and 4 The frame has a limiting structure 64 on its two short sides. The limiting structure 64 is an arc-shaped reinforcing rib with an arc facing the center. The connecting rod 30 has a notch 33 on the side near the bearing plate 20 to accommodate the limiting structure 64. The limiting structure 64 cooperates with the notch 33 to limit the range of movement of the reset spring 60 in the extension direction of the connecting rod.

[0034] See also Figure 2 The support plate 20 is provided with a groove 21 to accommodate the connecting rod 30 and the reset spring 60. In order to accommodate both positioning and placement, the two outer sides of the long side of the first rocker 62 extend with raised edges 65 arranged in a hill-like pattern. The raised edges 65 can limit the position of the reset spring 60 in the width direction within the groove 21. Of course, it can also be provided on the outside of the second rocker, with only one rocker, which saves material and facilitates the placement and removal of the spring.

[0035] The assembly process of the reed reset mechanism for the single-pole multi-throw RF switch with load is relatively simple. First, the reset reed 60 is placed in the corresponding groove of the support plate 20. Then, the RF connecting rod 31 with the guide post 40 and the load connecting rod 32 are placed in the corresponding positions. The guide post 40 passes through the corresponding hole of the support plate 20, and the two ends of the reset reed 60 are engaged with the corresponding notches of the connecting rod. At this time, all components of the reset mechanism can ensure accurate and stable positioning. Subsequently, the conductive sheet 50 is fixed to the corresponding guide post 40.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A reed reset mechanism for a single-pole multi-throw radio frequency switch under load, characterized in that, It includes a support plate, a connecting rod mounted on the support plate, multiple guide posts mounted on the connecting rod, and a reset spring between the connecting rod and the support plate; One end of the guide post is connected to the connecting rod, and the other end passes through the bearing plate and is connected to the conductive sheet located under the bearing plate. The connecting rod and the conductive sheet are linked through the guide post between them. The conductive sheet is used for direct conduction between terminals.

2. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 1, characterized in that, The linkage includes a row of radio frequency (RF) linkages and a load linkage. The RF linkages are used to switch the RF terminals and the common terminal on and off, and the load linkages are used to switch the RF terminals and the load terminal on and off.

3. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 1, characterized in that, The reset spring includes a pivot point, a first rocker plate and a second rocker plate located on both sides of the pivot point. The first rocker plate is located between the radio frequency linkage and the support plate, and the second rocker plate is located between the load linkage and the support plate.

4. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 3, characterized in that, The reset spring is a rectangular frame, the width of which is greater than the width of the connecting rod, and the fulcrum is an arc-shaped protrusion arranged opposite to the two long sides of the frame.

5. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 4, characterized in that, The frame has a limiting structure on its two short sides, and the connecting rod has a notch on the side near the bearing plate to accommodate the limiting structure. The limiting structure cooperates with the notch to limit the range of movement of the reset spring in the extension direction of the connecting rod.

6. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 5, characterized in that, The limiting structure is an arc-shaped reinforcing rib with an arc facing the center.

7. The reed reset mechanism for a single-pole multi-throw RF switch with load according to claim 3, characterized in that, The support plate is provided with a groove to accommodate the connecting rod and the return spring.

8. The reed reset mechanism for a single-pole multi-throw RF switch with load according to claim 7, characterized in that, The protruding edge extending from the long side of the first rocker and / or the second rocker is used to limit the position of the reset spring in the width direction within the groove.

9. The spring reset mechanism for a single-pole multi-throw RF switch with load according to claim 8, characterized in that, The protruding edge is disposed on the first rocker or the second rocker, and the protruding edge is arranged at intervals in a hill-like pattern.

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