Driving device and miniaturized radio frequency switch

Abstract

The invention relates to the technical field of radio frequency switches, and discloses a driving device and a miniaturized radio frequency switch, the driving device comprises a mounting seat, the top surface of the mounting seat is inwards provided with a mounting groove, two opposite sides of the mounting groove are respectively provided with a channel, and the bottom of each channel is provided with a push rod; each push rod is sleeved with a spring, and the two ends of each spring abut against the push rod and the bottom face of the channel respectively. A sliding ball is arranged on the top surface of the push rod; a driving assembly is mounted in the mounting groove, and the driving assembly drives the sliding ball in one channel to move along the bottom surface close to the mounting seat at the same time; the mounting groove and the two channels are formed in the top face of the mounting base, the driving structures composed of the sliding balls, the push rods and the springs are arranged in the channels, and the driving assembly is arranged in the mounting groove to push the sliding balls to press downwards, so that the driving assembly can be mounted in the mounting base through the novel driving mode; in addition, due to the fact that a driving mode of a seesaw structure is not adopted, the whole size is smaller, and miniaturization and integrated installation can be adapted.

Description

Technical Field

[0001] This invention relates to the field of radio frequency switch technology, and more specifically to a driving device and a miniaturized radio frequency switch. Background Technology

[0002] Mechanical contact type RF switches are a type of RF switch that controls the RF signal path by closing and opening mechanical contacts.

[0003] Existing mechanical contact-type RF switches mainly consist of an RF channel assembly and a drive assembly. The RF channel assembly includes multiple RF channels, and the drive assembly is used to select one RF channel for conduction. Currently, most drive assemblies are seesaw structures. For example, in a blind-connected RF coaxial switch disclosed in patent application CN120728200A, an electromagnetic component drives the seesaw to rotate, thereby controlling the conduction of the corresponding RF channel.

[0004] The existing seesaw structure drive components require an upper yoke, a lower yoke, an electromagnetic coil, a moving iron core, and a stationary iron core for actual use. The overall structure is large and occupies a lot of installation space, which is not conducive to miniaturized installation. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a driving device and a miniaturized radio frequency switch. The technical problem to be solved is that the existing driving devices for radio frequency switches are large in size, occupy a lot of installation space, and are not conducive to miniaturized installation.

[0006] To solve the above technical problems, in a first aspect, the present invention provides the following technical solution: a driving device, including a mounting base, wherein the top surface of the mounting base is provided with an inwardly formed mounting groove, and channels are respectively formed on opposite sides of the mounting groove, the two channels communicating with the mounting groove; Each channel has a push rod at its bottom, and the push rod passes through the bottom surface of the mounting base in the channel; Each push rod is also fitted with a spring, with the two ends of the spring abutting against the push rod and the bottom surface of the channel, respectively; Within each channel, a ball bearing is provided on the top surface of the push rod; A drive assembly is installed in the mounting slot, which is used to drive a ball bearing in a channel to move along the bottom surface near the mounting base at the same time.

[0007] In one embodiment of the first aspect, the drive assembly includes an electromagnetic relay, the two ends of the moving iron core of the electromagnetic relay extending into two channels respectively, and the moving iron core being above the center of the ball bearing.

[0008] In one embodiment of the first aspect, the electromagnetic relay includes a coil, a moving iron core, a stationary iron core, and a second spring; The coil includes a telescopic channel, the stationary iron core is disposed at one end of the telescopic channel, and the moving iron core is located in the telescopic channel, with one end passing through the stationary iron core; The second spring is sleeved on the moving iron core, and its two ends abut against the stationary iron core and the moving iron core respectively.

[0009] In one embodiment of the first aspect, the channel is cylindrical, and when one end of the moving iron core presses down a sliding ball, the sum of the length of the other end of the moving iron core protruding from the channel and the diameter of the sliding ball is greater than the diameter of the channel.

[0010] In one embodiment of the first aspect, each channel is provided with a sealing cap at the top.

[0011] In one embodiment of the first aspect, each push rod has an RF spring attached to one end that passes through the bottom surface of the mounting base.

[0012] Secondly, the present invention provides a miniaturized radio frequency switch, including the aforementioned driving device, and also including a base. The mounting base is installed on the top surface of the base, and a cavity is formed on the top surface of the base. Three radio frequency connectors are installed on the bottom surface of the base along the length of the base, and the inner conductors of the three radio frequency connectors extend into the cavity. When the ball in a channel is pressed down, causing the corresponding RF spring to move downward into place, the RF spring connects the middle RF connector with the RF connector on the corresponding side. When the slider in the other channel is pressed down, causing the corresponding RF spring to move downward into place, the RF spring connects the middle RF connector with the RF connector on the corresponding side.

[0013] In one embodiment of the second aspect, the bottom surface of the cavity is provided with limiting posts on both sides of each radio frequency reed.

[0014] In one embodiment of the second aspect, the base has mounting holes between every two RF connectors, the mounting holes penetrating the base and located below the cavity and perpendicular to the length direction of the base.

[0015] In one embodiment of the second aspect, the mounting base is connected to the base by screws.

[0016] The advantages of this invention compared with the prior art are as follows: This invention opens a mounting groove and two channels on the top surface of the mounting base, and sets a drive structure consisting of a ball bearing, a push rod and a spring in the channels and sets a drive assembly in the mounting groove to push the ball bearing down. This novel drive method can install the drive assembly in the mounting base. Moreover, since it does not use a seesaw structure drive method, the overall volume is smaller and can adapt to miniaturized and integrated installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the drive device in Embodiment 1; Figure 2 This is a schematic diagram of the miniaturized radio frequency switch in Embodiment 2; Figure 3 This is a three-dimensional diagram of the miniaturized radio frequency switch in Example 2. Detailed Implementation

[0018] The illustrative embodiments of this application include, but are not limited to, a driving device and a miniaturized radio frequency switch.

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0020] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items. Words such as “comprising” or “including” mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. Words such as “connected” or “linked” are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0021] Example 1 like Figure 1As shown, this embodiment provides a driving device, including a mounting base 10. The top surface of the mounting base 10 is provided with an inwardly formed mounting groove 17, and channels 11 are respectively formed on opposite sides of the mounting groove 17. The two channels 11 are connected to the mounting groove 17. Each channel 11 has a push rod 13 at its bottom, and the push rod 13 passes through the bottom surface of the mounting base 10 in the channel 11; Each push rod 13 is also fitted with a spring 14, with the two ends of the spring 14 abutting against the push rod 13 and the bottom surface of the channel 11, respectively. In each channel 11, a ball bearing 12 is provided on the top surface of the push rod 13; A drive assembly 15 is installed in the mounting slot 17. The drive assembly 15 is used to drive the ball bearing 12 in a channel 11 to move along the bottom surface near the mounting base 10 at the same time.

[0022] In practical use, the drive device in this embodiment pushes the sliding ball 12 down by opening a mounting groove 17 and two channels 11 on the top surface of the mounting base 10, and setting a drive structure consisting of a sliding ball 12, a push rod 13 and a spring 14 in the channel 11 and setting a drive component 15 in the mounting groove 17. This new drive method can install the drive component 15 in the mounting base 10. Moreover, since it does not use a seesaw structure drive method, the overall volume is smaller and can adapt to miniaturized and integrated installation.

[0023] In addition, by setting a spring 14, when one ball bearing 12 is pressed down, the spring 14 can push the push rod 13 up, thereby pushing the other ball bearing 12 up, thus ensuring that only one push rod 13 can move down at the same time.

[0024] Specifically, in this embodiment, the drive component 15 includes an electromagnetic relay. The two ends of the moving iron core 151 of the electromagnetic relay extend into the two channels 11 respectively, and the moving iron core 151 is above the center of the ball 12. Thus, when the moving iron core 151 moves, the moving iron core 151 slides above the ball 12 from a stationary state to an active state, and finally presses the ball 12 down.

[0025] Furthermore, in this embodiment, the electromagnetic relay 15 includes a coil 150, a moving iron core 151, a stationary iron core 153, and a second spring 152. The coil 150 includes a telescopic channel, a stationary iron core 153 is disposed at one end of the telescopic channel, and a moving iron core 151 is located in the telescopic channel, with one end passing through the stationary iron core 153. The second spring 152 is sleeved on the moving iron core 151, and its two ends abut against the stationary iron core 153 and the moving iron core 151 respectively.

[0026] by Figure 1For example, in actual use, in the initial state when the electromagnetic relay is not energized, the moving iron core 151 can be moved to the right by the elastic force of the second spring 152, causing the slider 12 in the right channel 11 to be pressed down, thereby giving the drive device an initial drive action; when the electromagnetic relay is energized, the moving iron core moves to the left under the action of electromagnetic force, thereby causing the slider 12 in the left channel 11 to be pressed down.

[0027] Specifically, in this embodiment, the channel 11 is cylindrical. When one end of the moving iron core 151 presses down a sliding ball 12, the sum of the length of the other end of the moving iron core 151 protruding from the channel 11 and the diameter of the sliding ball 12 is greater than the diameter of the channel 11. In this way, the other end of the moving iron core 151 can limit the sliding ball 12 in the channel 11 and prevent the sliding ball 12 from rolling out of the channel 11.

[0028] Specifically, in this embodiment, each channel 11 is provided with a sealing cap at the top. The sealing cap can prevent foreign objects from falling into the channel 11 and can also limit the movement of the ball bearing 12.

[0029] Specifically, in this embodiment, one end of each push rod 13 that passes through the bottom surface of the mounting base 10 is connected to an RF spring 16; in actual use, the corresponding RF channel can be turned on by moving the RF spring 16 downward.

[0030] Example 2 like Figure 2 and 3 As shown, this embodiment provides a miniaturized radio frequency switch, including the driving device in Embodiment 1, and also includes a base 20. The mounting base 10 is installed on the top surface of the base 20. A cavity 21 is opened on the top surface of the base 20. Three radio frequency connectors 22 are installed on the bottom surface of the base 20 along the length direction of the base 20. The inner conductors of the three radio frequency connectors 22 extend into the cavity 21. When the slider 12 in a channel 11 is pressed down, causing the corresponding RF spring 16 to move downward into place, the RF spring 16 connects the middle RF connector 22 with the RF connector 22 on the corresponding side. When the slider 12 in the other channel 11 is pressed down, causing the corresponding RF spring 16 to move downward into place, the RF spring 16 connects the middle RF connector 22 with the RF connector 22 on the corresponding side.

[0031] Based on the above, the electromagnetic relay can be activated to depress the corresponding slider 12, thereby achieving the RF channel conduction selection control.

[0032] Specifically, in this embodiment, in Figure 2In the cavity 21, a limiting post 23 is provided on both sides of each RF spring 16 on the bottom surface. In actual use, the limiting post 23 can limit the falling trajectory of the RF spring 16 to ensure coaxial contact between the RF spring 16 and the inner conductor contact of the RF connector 22.

[0033] Specifically, in this embodiment, mounting holes 24 are respectively provided on the base 20 between every two RF connectors 22. The mounting holes 24 penetrate the base 20 and are located below the cavity 21 and perpendicular to the length direction of the base 20.

[0034] In actual use, the RF switch can be installed and fixed through the two mounting holes 24.

[0035] Specifically, in this embodiment, the mounting base 10 and the base 20 are connected by screws; the number and installation position of the screws are set according to actual needs.

[0036] Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A drive device characterized by comprising: The mounting seat (10) has a mounting groove (17) opened in the top surface thereof, and two passages (11) are respectively formed on opposite sides of the mounting groove (17) and communicate with the mounting groove (17); The bottom of each passage (11) is provided with a push rod (13) which penetrates the bottom surface of the mounting seat (10) in the passage (11); A spring (14) is further sleeved on each push rod (13), and two ends of the spring (14) abut against the push rod (13) and the bottom surface of the passage (11) respectively; A sliding ball (12) is arranged on the top surface of the push rod (13) in each passage (11); The mounting groove (17) is provided with a driving assembly (15) for driving the sliding ball (12) in one passage (11) to move towards the bottom surface of the mounting seat (10) at the same time.

2. A drive device according to claim 1, characterized in that The driving assembly (15) comprises an electromagnetic relay, and the movable iron core (151) of the electromagnetic relay extends into the two passages (11) respectively, and the movable iron core (151) is above the ball center of the sliding ball (12).

3. A drive device according to claim 2, characterized in that The electromagnetic relay comprises a coil (150), a movable iron core (151), a static iron core (153) and a second spring (152); The coil (150) comprises an expansion passage, the static iron core (153) is arranged at one end of the expansion passage, the movable iron core (151) is located in the expansion passage and one end of the movable iron core (151) penetrates the static iron core (153); The second spring (152) is sleeved on the movable iron core (151) and abuts against the static iron core (153) and the movable iron core (151) respectively.

4. A drive device according to claim 3, characterized in that The passage (11) is cylindrical, when one end of the movable iron core (151) presses one sliding ball (12) downward, the other end of the movable iron core (151) protrudes from the passage (11) and the sum of the length of the protrusion and the diameter of the sliding ball (12) is greater than the diameter of the passage (11).

5. The drive apparatus according to claim 1, wherein The top of each passage (11) is provided with a sealing cap.

6. A drive device according to any one of claims 1-5, characterized in that One end of each push rod (13) penetrating the bottom surface of the mounting seat (10) is connected with a radio frequency reed (16).

7. A miniaturized radio frequency switch, characterized by The driving device of claim 6 further comprises a base (20), the mounting seat (10) is arranged on the top surface of the base (20), the top surface of the base (20) is provided with a cavity (21), and the bottom surface of the base (20) is provided with three radio frequency connectors (22) along the length direction of the base (20), and the inner conductors of the three radio frequency connectors (22) extend into the cavity (21); When the sliding ball (12) in one passage (11) is pressed downward to move the corresponding radio frequency reed (16) to a position, the radio frequency reed (16) communicates the middle radio frequency connector (22) with the radio frequency connector (22) on the corresponding side; When the sliding ball (12) in another passage (11) is pressed downward to move the corresponding radio frequency reed (16) to a position, the radio frequency reed (16) communicates the middle radio frequency connector (22) with the radio frequency connector (22) on the corresponding side.

8. A miniaturized radio frequency switch according to claim 7, characterized in that, The bottom surface of the cavity (21) is provided with a limiting column (23) on each side of each radio frequency reed (16).

9. The miniaturized radio frequency switch according to claim 7, wherein, The base (20) is provided with mounting holes (23) between every two radio frequency connectors (22), the mounting holes (23) penetrate the base (20) and are located below the cavity (21) and perpendicular to the length direction of the base (20).

10. The miniaturized radio frequency switch of claim 7, wherein, The mounting seat (10) is connected with the base (20) through screws.

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