Novel DPDT microwave switch structure

Abstract

The utility model discloses a novel DPDT microwave switch structure, which relates to the field of microwave switches and comprises a switch driving assembly, a microwave assembly and a control rod arranged on the switch driving assembly. The switch driving assembly comprises two driving rods which are arranged in a stacked mode, and the two driving rods are connected through a transmission spring. The two driving rods respectively control the on-off of a signal channel between the pair of microwave switch connectors; the microwave assembly comprises four connectors and a switch connecting assembly composed of springs, and the connectors are arranged in pairs and are connected with the two driving rods through the switch connecting assembly; the control rod is arranged on the switch driving assembly on the outer layer, and the control rod and the two driving rods form an upper and lower three-layer stacked structure. The two single driving rods are arranged in a stacked mode, the two ends of the transmission spring are fixed to the stacked driving rods, the control rod inserted into the driving rod on the outer layer controls the two driving rods to move in the opposite direction through driving, then double-pole double-throw synchronous switching is achieved, the structural complexity is lowered, and the size is reduced.

Description

Technical Field

[0001] The present application relates to the field of microwave switches, and in particular to a novel DPDT microwave switch structure. Background Art

[0002] A microwave switch, also known as an RF switch, is a device that controls the conversion of microwave signal channels in a circuit system. RF and microwave switches are widely used in microwave test systems for signal routing between instruments and devices under test (DUT). Combining switches into a switch matrix system allows signals from multiple instruments to be routed to a single or multiple DUTs. This allows multiple tests to be performed in the same setup without frequent connections and disconnections. The entire test process can be automated, thereby increasing throughput in high-volume production environments.

[0003] In the related technology, microwave switches can be divided into single-pole multiple-throw, double-pole double-throw and multiple-throw types according to the number of ports. The traditional new DPDT microwave switch structure has two groups of electromagnetic relays controlled, with a total of four coils; the structure is complex, the volume is large, the mass is large, and in the case of multiple ports and multiple throws, it is difficult to keep synchronization when switching ports and changing the on-off state. Considering the volume of microwave switches and the space resources occupied by equipment, the more ports and throws, the more difficult it is to implement. Utility Model Content

[0004] The embodiment of the present application provides a new DPDT microwave switch structure to solve the problem of asynchronous switching of microwave switch ports. The new DPDT microwave switch structure includes a switch drive component, a microwave component, and a control rod arranged on the switch drive component;

[0005] The switch drive assembly comprises two stacked drive rods, which are connected by a transmission spring; the two drive rods are respectively used to control the on and off of a signal channel between a pair of microwave switch connectors;

[0006] The microwave assembly includes four connectors and a switch connection assembly, wherein the connectors are arranged in pairs and are respectively connected to two driving rods through the switch connection assembly;

[0007] The control rod is arranged on the switch driving assembly of the outer layer, and the control rod and the two driving rods form a three-layer stacked structure.

[0008] Specifically, the driving rod includes an outer driving rod away from the connector and an inner driving rod close to the connector;

[0009] The outer driving rods and the inner driving rods are arranged alternately, and the two ends of each set of driving rods are respectively connected to the switch connection assembly.

[0010] Specifically, a first spring groove is provided on the bottom surface of the outer driving rod, and an insertion hole is provided on the top surface. The top end of the transmission spring is inserted into the first spring groove for fixation, and the control rod is inserted into the insertion hole.

[0011] Specifically, a second spring groove is provided on the top surface of the inner driving rod, and the bottom end of the transmission spring is inserted into the second spring groove and fixed.

[0012] Specifically, the outer driving rod is an inverted U-shape, the first spring groove is located at the center of the horizontal rod segment, and the two vertical rod segments are provided with first mounting holes, and the outer driving rod is connected to the switch connecting assembly through the first mounting holes.

[0013] Specifically, the inner driving rod is a straight-line crossbar, and the second spring slot is located at the center of the crossbar; second mounting holes are opened at two ends of the crossbar, and the inner driving rod is connected to the switch connecting assembly through the second mounting holes.

[0014] Specifically, the novel DPDT microwave switch structure also includes a cover plate, which is provided with four switch holes; the connector and the switch connection assembly are located in a cavity below the cover plate, and the switch connection assembly is respectively connected to the outer driving rod and the inner driving rod through the switch holes.

[0015] Specifically, the switch connection assembly includes four radio frequency reeds, a push rod fixedly mounted on the radio frequency reeds, and a spring sleeved on a stud;

[0016] Two ends of the radio frequency reed correspond to the connectors respectively, and when the radio frequency reed contacts the contacts of the connector, the corresponding radio frequency path is turned on.

[0017] Specifically, a fixing hole is opened at the center of the radio frequency reed, and the push rod is installed through the fixing hole.

[0018] Specifically, the top end of the guide rod of the connector is a contact, and the contact is configured in a mushroom head shape;

[0019] The radio frequency reeds are divided into two reed groups, one of which is located above the contact and the other is located below the contact.

[0020] The beneficial effects brought about by the technical solution provided in the embodiments of the present application include at least: traditional connectors are arranged in an array of pairs, and two pairs of connectors can be synchronously switched through a switch connection component; the synchronous switching is achieved based on two single drive rods and a transmission spring connecting the two drive rods, the two single drive rods are stacked and the two ends of the transmission spring are fixed to the stacked drive rods, and the control rod inserted into the outer drive rod controls the relative movement of the two drive rods through driving, thereby realizing the synchronous switching of double-pole double-throw. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a new DPDT microwave switch structure without a cover plate cavity;

[0022] Figure 2 It is a schematic diagram of the overall structure of the novel DPDT microwave switch structure provided in the embodiment of the present application;

[0023] Figure 3 It is the installation diagram of the cover plate and the switch connection assembly;

[0024] Figure 4 It is a schematic diagram of the connection between the outer drive rod and the control rod;

[0025] Figure 5 is a schematic diagram of the structure of the inner drive rod;

[0026] Figure 6 It is a schematic diagram of the installation structure of the switch connection component and the connector;

[0027] Figure 7 It is a schematic diagram of the structure of the radio frequency reed;

[0028] Figure 8 It is a schematic diagram of the connector structure.

[0029] Figure numerals: 10, switch drive assembly; 11, drive rod; 12, outer drive rod; 121, first spring slot; 122, jack; 123, first mounting hole; 13, inner drive rod; 131, second spring slot; 132, second mounting hole; 20, microwave assembly; 21, connector; 22, switch connection assembly; 221, RF reed; 222, push rod; 223, spring; 224, compression spring gasket; 30, control rod; 31, transmission spring; 40, cover plate; 41, switch hole. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0031] The term "multiple" as used herein refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0032] Figure 11 is a schematic diagram of the structure of a novel DPDT microwave switch structure provided in an embodiment of the present application. The microwave switch is a double-pole double-throw function switch structure, including a switch drive component 10, a microwave component 20, and a control rod 30. The switch drive component 10 is the key to realizing the double-pole double-throw function, and the control rod 30 is arranged on the switch drive component to cooperate with an external relay or manually control the switch state. The microwave component 20 is a controlled component, that is, an array structure composed of four microwave connectors controlled by double poles.

[0033] like Figure 1 As shown, the switch drive assembly 10 includes two sets of stacked drive rods 11, and a transmission spring 31 is arranged between the two drive rods 11; the two drive rods 11 respectively control the on and off of the signal channel between a pair of microwave switch connectors through the transmission spring 31. The key to the switching of the double-pole switch lies in the synchronization of the switching, and the use of two drive rods to control and switch through the spring elastic force can achieve the effect of fast synchronous switching.

[0034] The microwave assembly 20 includes four connectors 21 and a switch connection assembly 22. The connectors 21 are arranged in pairs and are connected to two driving rods 11 through the switch connection assembly 22, that is, the two driving rods are used to press the switch connection assembly 22 respectively, thereby controlling the corresponding connector passage. The control rod 30 is arranged on the outer switch driving assembly 10, and the control rod 30 and the two driving rods 11 form a three-layer stacked structure.

[0035] In some embodiments, four connectors may be arranged in an array structure, and the switch connection assembly may be arranged in a rectangular structure so that two connectors form a connection path, so that the size of the device may be reduced by staggering the two driving rods.

[0036] See also Figure 2 As shown, a rectangular cover plate 40 is provided, and four switch holes 41 are opened on the cover plate 40. Further, the switch holes 41 can be opened in a cross-shaped manner, and the connector 21 and the switch connection component 22 are arranged inside the lower cavity of the cover plate, and the switch connection component 22 is respectively connected to two staggered driving rods through the switch holes 41.

[0037] The driving rod 11 can be further divided into an outer driving rod 12 and an inner driving rod 13. In this application, the outer driving rod 12 is defined as the one close to the microwave assembly 20, and the inner driving rod 13 is defined as the one far away from the microwave assembly 20. The outer driving rod 12 and the inner driving rod 13 are arranged alternately, and the two ends of each set of driving rods are connected to the switch connection assembly 22 through the switch hole 41 respectively.

[0038] See also Figure 4 and Figure 5 Regarding the stacked structure of the transmission spring and the control rod, in some embodiments, reference may also be made to Figure 4and Figure 5 The structure is set up, specifically, a first spring groove 121 is provided on the bottom surface of the outer driving rod 12, and a plug hole 122 is provided on the top surface, the top end of the transmission spring 31 can be inserted into the first spring groove 121 for fixing, and the control rod 30 is inserted into the plug hole 122 on the top surface. Similarly, a second spring groove 131 is provided on the top surface of the inner driving rod 13, and the bottom end of the transmission spring 31 is inserted into the second spring groove 131 for fixing. In this way, when the relay drives the control rod 30, the outer driving rod 12 can be driven directly by the rigid force, while the inner driving rod 13 is indirectly driven by the elastic force of the transmission spring 31.

[0039] In some embodiments, because the outer drive rod 12 is located far away from the connector, the outer drive rod 12 is set to an inverted U shape, the first spring slot 121 is opened to the center of the U-shaped crossbar segment, and the first mounting holes 123 are opened on the two vertical rod segments. The outer drive rod 12 is connected to the switch connection assembly 22 through the first mounting hole 123. Similarly, because the inner drive rod 13 is close to the switch connection assembly 22, it can be directly set as a straight crossbar, and the second spring slot 131 is set to the center of the crossbar. Then, the second mounting holes 132 are opened at the two ends of the crossbar, and the inner drive rod 13 is connected to the switch connection assembly 22 through the second mounting holes 132.

[0040] The specific structure of the switch connection assembly depends on the positions of the four connectors. This application is designed to maximize space utilization and place the four connectors in a rectangular structure, so that the switch connection assembly is also set in a rectangular structure. For details, see Figure 6 As shown. The switch connection assembly 22 includes four RF reeds 221, a push rod 222 fixedly mounted on the RF reed 221, and a spring 223 sleeved on the push rod 222. The four RF reeds 221 form a rectangular structure, and the four connectors 21 are distributed at the corners of the rectangle. When any RF reed falls, it can connect the paired connectors on both sides. For example Figure 6 The four contacts of connector A, connector B, connector C, and connector D represent switches of four microwave channels respectively. Two contacts are pressed down or lifted up by two adjacent RF springs at the same time to conduct the corresponding RF paths.

[0041] Specifically, the push rod can be set to the center of the RF spring to ensure that it is turned on or off at the same time. A spring 223 is sleeved on the push rod. In addition, a compression spring gasket 224 can be sleeved on the push rod 222. When installed, the compression spring gasket 224 is between the spring 223 and the driving rod. Figure 3 As shown, the top end of the push rod 222 passes through the top surface of the cover plate 40, and the spring 223 and the compression spring gasket 224 are exposed, which is convenient for the installation and connection of the drive rod.

[0042] See also Figure 7 and Figure 8 As shown, a fixing hole 225 is provided at the center of the RF reed 221, and the push rod 222 is installed through the fixing hole 225. A compression spring gasket 224 is sleeved on the push rod 222 and is located between the spring 223 and the driving rod to ensure balanced force. In addition, to facilitate contact and disconnection, the contact 212 at the top of the guide rod 211 of the connector 21 is set to a mushroom head shape, and the RF reed 221 is divided into two reed groups, and adjacent reeds are in different groups, one of the reed groups (reed 1 between connectors A and B, reed 3 between connectors C and D) is set above the contact 212, and the other reed group (reed 2 between connectors B and C, reed 4 between connectors D and A) is set below the contact 212. In this way, AD and BC form a microwave channel that is synchronously switched on and off, and AB and CD form a microwave channel that is synchronously switched on and off.

[0043] Under the initial condition without external control, the RF reed 221 is in the upper position, at which time the AB microwave channel and the CD microwave channel are in the on state, and the BC microwave channel and the DA microwave channel are in the off state. When the control rod 30 is subjected to force or driven by a relay, the outer drive rod 12 drives the RF reed 1 and the RF reed 3 to move downward. At the same time, the downward movement of the outer drive rod 12 will compress the transmission spring 31, and the transmission spring 31 will apply a downward force to the inner drive rod 13. When the force is greater than the spring reaction force, the inner drive rod 13 will drive the RF reed 2 and the RF reed 4 to move downward and contact the corresponding mushroom head contacts, while the original RF reed 1 and RF reed 3 continue to move downward from the mushroom contact position.

[0044] The traditional connectors are arranged in pairs in an array, and two pairs of connectors can be switched synchronously through a switch connection assembly; the synchronous switching is achieved based on two single drive rods and a transmission spring connecting the two drive rods. The two single drive rods are stacked and the two ends of the transmission spring are fixed to the stacked drive rods. The control rod inserted into the outer drive rod controls the relative movement of the two drive rods through driving, thereby realizing the synchronous switching of double-pole double-throw.

[0045] The preferred embodiments of the present invention are described above; it should be understood that the present invention is not limited to the above-mentioned specific implementation modes, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content 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 technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A novel DPDT microwave switch structure, characterized in that: It comprises a switch drive component (10), a microwave component (20), and a control rod (30) arranged on the switch drive component (10); The switch drive assembly (10) comprises two stacked drive rods (11), the two drive rods (11) being connected via a transmission spring (31); the two drive rods (11) are respectively used to control the on / off of a signal channel between a pair of microwave switch connectors; The microwave assembly (20) comprises four connectors (21) and a switch connection assembly (22); the connectors (21) are arranged in pairs and are respectively connected to two driving rods (11) through the switch connection assembly (22); The control rod (30) is arranged on the outer switch drive assembly (10), and the control rod (30) and the two drive rods (11) form a three-layer stacked structure.

2. The novel DPDT microwave switch structure according to claim 1 is characterized in that: The driving rod (11) comprises an outer driving rod (12) far away from the connector (21) and an inner driving rod (13) close to the connector (21); The outer driving rods (12) and the inner driving rods (13) are arranged alternately, and the two ends of each set of driving rods are respectively connected to the switch connection assembly (22).

3. The novel DPDT microwave switch structure according to claim 2 is characterized in that: A first spring groove (121) is provided on the bottom surface of the outer driving rod, and an insertion hole (122) is provided on the top surface; the top end of the transmission spring (31) is inserted into the first spring groove (121) for fixation, and the control rod (30) is inserted into the insertion hole (122).

4. The novel DPDT microwave switch structure according to claim 2 is characterized in that: A second spring groove (131) is provided on the top surface of the inner driving rod (13), and the bottom end of the transmission spring (31) is inserted into the second spring groove (131) and fixed.

5. The novel DPDT microwave switch structure according to claim 3 is characterized in that: The outer drive rod (12) is in an inverted U shape, the first spring slot (121) is located at the center of the horizontal rod section, and the two vertical rod sections are provided with first mounting holes (123), and the outer drive rod (12) is connected to the switch connection assembly (22) through the first mounting holes (123).

6. The novel DPDT microwave switch structure according to claim 4 is characterized in that: The inner driving rod (13) is a straight-line crossbar, and the second spring slot (131) is located at the center of the crossbar; second mounting holes (132) are provided at two ends of the crossbar, and the inner driving rod (13) is connected to the switch connection assembly (22) through the second mounting holes (132).

7. The novel DPDT microwave switch structure according to claim 2 is characterized in that: The novel DPDT microwave switch structure further comprises a cover plate (40), and four switch holes (41) are formed on the cover plate (40); the connector (21) and the switch connection assembly (22) are located in a cavity below the cover plate, and the switch connection assembly (22) is respectively connected to the outer driving rod (12) and the inner driving rod (13) through the switch holes (41).

8. The novel DPDT microwave switch structure according to claim 7 is characterized in that: The switch connection assembly (22) comprises four radio frequency reeds (221), a push rod (222) fixedly mounted on the radio frequency reeds (221), and a spring (223) sleeved on the push rod (222); Two ends of the radio frequency reed (221) respectively correspond to the connector (21), and when the radio frequency reed (221) contacts the contact of the connector (21), the corresponding radio frequency path is turned on.

9. The novel DPDT microwave switch structure according to claim 8 is characterized in that: A fixing hole (225) is provided at the center of the radio frequency reed (221), and the push rod (222) is installed through the fixing hole (225).

10. The novel DPDT microwave switch structure according to claim 9 is characterized in that: The top end of the guide rod (211) of the connector (21) is a contact (212), and the contact (212) is arranged in a mushroom head shape; The radio frequency reeds (221) are divided into two reed groups, one of which is located above the contact (212) and the other reed group is located below the contact (212).

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