Broadband microwave transmission system for single-pole six-throw coaxial switch and switch
By adopting an external limit scheme in a single-pole six-throw coaxial switch, and utilizing the combination structure of limit pins, return springs, and reed assembly, the problems of poor contact at friction positions and difficulties in machining multiple parts are solved, achieving high reliability and efficient assembly, and extending the service life and switching stability of the switch.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-31
AI Technical Summary
When existing single-pole six-throw coaxial switches are limited within the cavity, friction at the contact point can easily cause poor contact. Furthermore, the numerous parts and difficult manufacturing process affect reliability and assembly efficiency.
An external limiting scheme is adopted, which uses a limiting pin on the cover plate and a return spring in conjunction with a spring assembly to achieve external limiting of the cavity, simplifying the part structure and improving assembly efficiency. The combination structure of push rod and spring facilitates installation and disassembly.
It improves the reliability and assembly efficiency of single-pole six-throw coaxial switches, extends their service life, and enhances the repeatability of switch switching.
Smart Images
Figure CN121769463A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of broadband microwave transmission, and more specifically to a broadband microwave transmission system and switch for a single-pole six-throw coaxial switch. Background Technology
[0002] As a type of passive microwave device, radio frequency coaxial switch mainly realizes the transmission and switching of microwave signals and is a key component in building instrument systems such as switch matrices and automatic test systems.
[0003] Existing single-pole six-throw coaxial switches limit the movement within the cavity. The friction point during the push rod movement is located inside the microwave cavity. After friction generates excess material, it can easily cause poor contact at the contact point. Alternatively, limiting the movement can be done outside the cavity, but this involves more parts and is more difficult to manufacture. Summary of the Invention
[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a broadband microwave transmission system and switch for a single-pole six-throw coaxial switch that employs an external limiting scheme, has fewer parts, is easy to process and assemble, and significantly improves the reliability and assembly efficiency of the single-pole six-throw coaxial switch.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a broadband microwave transmission system for a single-pole six-throw coaxial switch, comprising a cover plate, a spring assembly, and a cavity assembly. The cover plate is disposed above the housing to seal the transmission cavity, and the cover plate is provided with a connecting groove; The cavity assembly includes a housing, a connector component, and a transmission cavity. The connector component is fixed to the housing, with one end extending into the transmission cavity. The spring assembly includes a push rod, a transmission spring, and a return spring. The push rod includes a fixing block, a connecting rod, and a buckle. The transmission spring has a slot, the buckle is located at the front end of the connecting rod, the fixing block is located at the rear end of the connecting rod, and the fixing block has a return spring cavity. The return spring is located in the return spring cavity, with one end abutting against the cover plate and the other end abutting against the fixing block. The connecting rod passes through the connecting slot and extends into the transmission cavity. The transmission spring is fixedly connected to the connecting rod through the slot and the buckle. The push rod drives the transmission spring to move within the transmission cavity, abutting against or releasing the abutment from the connector component. The connector component includes six peripheral connector components and one intermediate connector component. The six peripheral connector components are evenly distributed at 60° intervals in the circumferential direction of the intermediate connector component. The spring assembly is provided in 6 groups, and each group of spring assemblies connects one peripheral connector component and one intermediate connector component.
[0006] In the aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch, a limiting pin is provided on the cover plate, the limiting pin is inserted into the reset spring cavity, and the reset spring is sleeved on the outside of the limiting pin.
[0007] In the aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch, the fixing block is rectangular, two connecting rods are symmetrically arranged at the bottom of the fixing block, and two reset spring cavities are symmetrically arranged on the fixing block outside the connecting rods.
[0008] In the aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch, the fixing block is rectangular, two connecting rods are symmetrically arranged at the bottom of the fixing block, and a reset spring cavity is provided on the fixing block between the two connecting rods.
[0009] In the aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch, the fixing block is arranged in a cross shape, including two spring ends and two rod ends, with the spring ends and rod ends arranged intersecting. The two connecting rods are symmetrically arranged below the rod ends, and the reset spring cavity is symmetrically arranged below the spring ends.
[0010] In the aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch, the fixing block is arranged in a cross shape and includes four mounting ends. Two connecting rods are symmetrically arranged below two opposite mounting ends, and a reset spring cavity is provided below each of the four mounting ends.
[0011] The broadband microwave transmission system for a single-pole six-throw coaxial switch described above includes an intermediate inner conductor, on which six inner contacts are evenly arranged at 60° intervals along the circumference.
[0012] The aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch includes two connecting rods and two corresponding slots. The distance between the two connecting rods is the same as the distance between the two slots. The buckle is elongated and includes a buckle body, a locking body, and a baffle. The cross-sectional shape of the locking body is the same as that of the buckle body. The buckle body is connected to the tail end of the connecting rod. The locking body is offset from the buckle body and connected to the front end of the buckle body. The baffle is located at the connection between the connecting rod and the buckle body. The cross-sectional shape of the slot is the same as that of the locking body. After passing through the locking body, the slot is fixed to the buckle body by the baffle.
[0013] The aforementioned broadband microwave transmission system for a single-pole six-throw coaxial switch includes a circular slot and a conical buckle, comprising a buckle body, a locking body, and a baffle. The buckle body is cylindrical with its tail end fixed to a connecting rod. The locking body is axially fixed to the front end of the buckle body in an umbrella shape, starting from the front end of the buckle body. The baffle is fixed at the connection between the buckle body and the connecting rod. After the slot passes through the locking body, it is fixed between the locking body and the baffle.
[0014] A single-pole six-throw coaxial switch, comprising: The circuit control system is used to provide operating voltage and control signals to the single-pole six-throw coaxial switch; An electromagnetic drive system is used to transmit control signals from a circuit control system to a microwave transmission system via mechanical motion. And the microwave transmission system as described in any one of claims 1-9, for realizing the transmission and switching of broadband microwave signals.
[0015] The beneficial effects of the broadband microwave transmission system and switch for a single-pole six-throw coaxial switch of the present invention are as follows: by setting a combination structure of push rod, spring, buckle and slot, it is convenient to install and disassemble, improves assembly efficiency, and can achieve external limit of cavity through return spring and limit pin, thereby improving the reliability, service life and repeatability of switch switching. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the broadband microwave transmission system in an embodiment of the present invention; Figure 2 This is a schematic diagram of the combined structure of the cover plate and the spring assembly in an embodiment of the present invention; Figure 3 This is a schematic diagram of the cover plate structure in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the overall structure of the broadband microwave transmission system in an embodiment of the present invention; Figure 5 This is a schematic diagram of the first type of push rod structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the second type of push rod structure in an embodiment of the present invention; Figure 7 This is a schematic diagram of the third type of push rod structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the fourth type of push rod structure in an embodiment of the present invention; Figure 9 This is a schematic diagram of the first type of reset spring mounting structure in an embodiment of the present invention; Figure 10 This is a schematic diagram of the second type of reset spring mounting structure in an embodiment of the present invention; Figure 11This is a schematic diagram of the third type of reset spring mounting structure in an embodiment of the present invention; Figure 12 This is a schematic diagram of the first type of snap-fit structure in an embodiment of the present invention; Figure 13 This is a schematic diagram of the first type of snap-fit structure in an embodiment of the present invention; Figure 14 This is a schematic diagram of the first type of limiting pin installation structure in an embodiment of the present invention; Figure 15 This is a schematic diagram of the second type of limiting pin installation structure in an embodiment of the present invention; Figure 16 This is a schematic diagram of the third type of limiting pin installation structure in an embodiment of the present invention; Figure 17 This is a schematic diagram of the fourth type of limiting pin installation structure in an embodiment of the present invention; Figure 18 This is a schematic diagram of a single-pole six-throw coaxial switch structure in an embodiment of the present invention. Detailed Implementation
[0017] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be described below in conjunction with specific embodiments and accompanying drawings.
[0018] Example 1 like Figure 1 As shown, a broadband microwave transmission system for a single-pole six-throw coaxial switch includes a cover plate assembly 10 and a cavity assembly 20. The cover plate assembly includes a cover plate 11, a spring assembly 30, a connecting post 12, and a mounting hole 13.
[0019] like Figure 2 and Figure 3 , Figure 4 As shown, a cover plate is positioned above the housing to seal the transmission cavity, and a connecting groove 14 is provided on the cover plate. The connecting groove can be set as a long strip, or as a short strip opening, or other shapes, depending on actual needs, and is mainly used to install the push rod structure of the spring assembly.
[0020] The cavity assembly includes a housing 21, a connector component 22, and a transmission cavity 23. The connector component is fixed to the housing, with one end extending into the transmission cavity. The connector component includes six peripheral connector components and one intermediate connector component. The six peripheral connector components are evenly distributed 60° apart in the circumferential direction of the intermediate connector component.
[0021] The intermediate connector component and the peripheral connector component have the same basic structure, both including an inner conductor 221 and an outer conductor 222, as well as a connector support that supports the inner and outer conductors. The inner conductor is mainly used to connect the transmission springs in the spring assembly. The outer conductor is connected to the inner conductor and is used to transmit signals outward. The connector support is connected to the housing. The inner conductor is connected to the outer conductor through the first dielectric support 224 and the second dielectric support 225. The conductor arrangement and structure are the same as in the prior art, and will not be described in detail here.
[0022] In this embodiment, the intermediate connector component includes an intermediate inner conductor 223, and the intermediate inner conductor is uniformly provided with 6 inner contacts at 60° intervals along the circumference.
[0023] like Figures 4-17 As shown, the reed assembly includes a push rod 31, a transmission reed 32, and a return spring 33. The push rod drives the transmission reed to move within the transmission cavity, abutting or releasing from contact with the inner conductor on the connector component, thus serving as a bridge for transmission.
[0024] The push rod includes a fixing block 311, a connecting rod 312, and a buckle 313. The transmission spring is provided with a slot 321, the buckle is located at the front end of the connecting rod, the fixing block is located at the rear end of the connecting rod, and the fixing block is provided with a reset spring cavity 34. The reset spring is located in the reset spring cavity, with one end abutting against the cover plate and the other end abutting against the fixing block. The connecting rod passes through the connecting slot and enters the transmission cavity. The transmission spring is fixedly connected to the connecting rod through the slot and the buckle. There are 6 sets of spring assemblies, and each set of spring assemblies connects an outer connector component and an intermediate connector component.
[0025] To facilitate the use of the push rod, a mounting rod 314 is provided above the fixing block for connecting the push rod to the electromagnetic drive system.
[0026] Furthermore, to ensure the movement accuracy of the return spring, a limiting pin 15 is provided on the cover plate. The limiting pin is inserted into the return spring cavity, and the return spring is sleeved on the outside of the limiting pin. When the limiting pin is installed, a pin through hole 315 is provided at the top of the return spring cavity to leave space for the movement of the limiting pin when the push rod is down.
[0027] In this embodiment, the buckle structure can be a strip buckle or a conical buckle. The strip buckle structure is easier to install, while the conical buckle structure is more robust than the strip buckle structure.
[0028] When using a strip buckle, there are two connecting rods and two corresponding slots. The distance between the two connecting rods is the same as the distance between the two slots. The buckle is long and includes a buckle body 316, a locking body 317, and a baffle 318. The cross-sectional shape of the locking body is the same as that of the buckle body. The buckle body is connected to the tail end of the connecting rod. The locking body is staggered from the buckle body and is connected to the front end of the buckle body. The baffle is set at the connection between the connecting rod and the buckle body. The cross-sectional shape of the slot is the same as that of the locking body. After the slot passes through the locking body, it is fixed to the buckle body by the baffle.
[0029] When using a conical buckle, one or two connecting rods can be used. In this case, a single connecting rod can easily cause unstable contact between the transmission spring and the two sides. Therefore, two connecting rods are used to improve the connection stability of the transmission spring.
[0030] At this time, the slot is circular and the buckle is conical, including buckle body 319, buckle body 310 and baffle. The buckle body is cylindrical and its tail end is fixed on the connecting rod. The buckle body is axially fixed to the front end of the buckle body in an umbrella shape, starting from the front end of the buckle body. The baffle is fixed at the connection between the buckle body and the connecting rod. After the slot passes through the buckle body, it is fixed between the buckle body and the baffle.
[0031] When using the push rod, the fixing block and return spring can be set according to the actual needs of use, specifically including the following forms.
[0032] The fixing block is rectangular in shape, with two connecting rods symmetrically arranged at the bottom of the fixing block. A reset spring cavity is located on the fixing block between the two connecting rods, and a reset spring is installed there. This type of reset spring cavity saves space in the fixing block and facilitates its miniaturization.
[0033] The fixing block is rectangular, with two connecting rods symmetrically arranged at the bottom of the fixing block. Two return spring cavities are symmetrically arranged on the fixing block outside the connecting rods, each housing a return spring. This type of return spring cavity saves space while ensuring strong stability during return spring operation. The limiting pins on the cover plate are positioned as follows... Figure 14 As shown.
[0034] The fixing block is arranged in a cross shape, including two spring ends 316 and two rod ends 317. The spring ends and rod ends are arranged intersectingly, and two connecting rods are symmetrically arranged below the rod ends. The reset spring cavity is symmetrically arranged below the spring ends, and two reset springs are installed. This type of reset spring cavity requires a larger installation space, which can further improve the stability of the reset spring operation. At this time, the limiting pins on the cover plate are set as follows: Figure 15 As shown.
[0035] The fixing block is arranged in a cross shape, including four mounting ends 318. Two connecting rods are symmetrically arranged below two opposite mounting ends. Each of the four mounting ends has a reset spring cavity below it, housing four reset springs. This type of reset spring cavity requires a larger installation space, but provides the best stability for the reset springs, preventing spring jamming. At this time, the limiting pins on the cover plate are positioned as follows... Figure 16 As shown.
[0036] Similarly, such as Figure 17 As shown, the fixing block can also use an irregular block structure. In this case, it is only necessary to ensure that the fixing block can be set with the components that complete the assembly and mechanism, and can be connected with other components.
[0037] Example 2 like Figure 18 As shown, a single-pole six-throw coaxial switch includes: The circuit control system 100 is used to provide operating voltage and control signals to the single-pole six-throw coaxial switch.
[0038] The electromagnetic drive system 200 is used to transmit control signals from the circuit control system to the microwave transmission system through mechanical motion.
[0039] The microwave transmission system 300 has the same structure as that in Example 1 and is used to realize the transmission and switching of broadband microwave signals.
[0040] The circuit control system and electromagnetic drive system have the same structure as those used in existing single-pole six-throw coaxial switches. This embodiment mainly improves the microwave transmission system of the single-pole six-throw coaxial switch, and the structure of the microwave transmission system used is the same as that described in Embodiment 1. The electromagnetic drive system is connected to the push rod by the mounting rod set above the push rod, and the electromagnetic drive system completes the action of driving the push rod.
[0041] The above embodiments are merely illustrative of the structural concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A broadband microwave transmission system for a single-pole six-throw coaxial switch, characterized in that: Includes cover plate, spring assembly, and cavity assembly. The cover plate is disposed above the housing to seal the transmission cavity, and the cover plate is provided with a connecting groove; The cavity assembly includes a housing, a connector component, and a transmission cavity. The connector component is fixed to the housing, with one end extending into the transmission cavity. The spring assembly includes a push rod, a transmission spring, and a return spring. The push rod includes a fixing block, a connecting rod, and a buckle. The transmission spring has a slot, the buckle is located at the front end of the connecting rod, the fixing block is located at the rear end of the connecting rod, and the fixing block has a return spring cavity. The return spring is located in the return spring cavity, with one end abutting against the cover plate and the other end abutting against the fixing block. The connecting rod passes through the connecting slot and extends into the transmission cavity. The transmission spring is fixedly connected to the connecting rod through the slot and the buckle. The push rod drives the transmission spring to move within the transmission cavity, abutting against or releasing the abutment from the connector component. The connector component includes six peripheral connector components and one intermediate connector component. The six peripheral connector components are evenly distributed at 60° intervals in the circumferential direction of the intermediate connector component. The spring assembly is provided in 6 groups, and each group of spring assemblies connects one peripheral connector component and one intermediate connector component.
2. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 1, characterized in that: The cover plate is provided with a limiting pin, which is inserted into the reset spring cavity, and the reset spring is sleeved on the outside of the limiting pin.
3. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 2, characterized in that: The fixing block is rectangular in shape, and two connecting rods are symmetrically arranged at the bottom of the fixing block. Two reset spring cavities are symmetrically arranged on the fixing block outside the connecting rods.
4. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 2, characterized in that: The fixing block is rectangular in shape, and two connecting rods are symmetrically arranged at the bottom of the fixing block. The reset spring cavity is located on the fixing block between the two connecting rods.
5. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 2, characterized in that: The fixing block is arranged in a cross shape, including two spring ends and two rod ends. The spring ends and rod ends are arranged intersectingly. The two connecting rods are symmetrically arranged below the rod ends. The reset spring cavity is symmetrically arranged below the spring ends.
6. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 2, characterized in that: The fixing block is arranged in a cross shape and includes four mounting ends. Two connecting rods are symmetrically arranged below two opposite mounting ends. A reset spring cavity is provided below each of the four mounting ends.
7. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 1, characterized in that: The intermediate connector component includes an inner conductor, and the inner conductor has six inner contacts evenly arranged at 60° intervals along the circumference.
8. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 1, characterized in that: Two connecting rods are provided, and two corresponding slots are provided. The distance between the two connecting rods is the same as the distance between the two slots. The buckle is elongated and includes a buckle body, a locking body, and a baffle. The cross-sectional shape of the locking body is the same as that of the buckle body. The buckle body is connected to the tail end of the connecting rod. The locking body is offset from the buckle body and is connected to the front end of the buckle body. The baffle is provided at the connection between the connecting rod and the buckle body. The cross-sectional shape of the slot is the same as that of the locking body. After the slot passes through the locking body, it is fixed to the buckle body by the baffle.
9. The broadband microwave transmission system for a single-pole six-throw coaxial switch according to claim 1, characterized in that: The slot is circular, and the buckle is conical, including a buckle body, a clip body, and a baffle. The buckle body is cylindrical, with its tail end fixed to the connecting rod. The clip body is axially fixed to the front end of the buckle body in an umbrella shape, starting from the front end of the buckle body. The baffle is fixed at the connection between the buckle body and the connecting rod. After the slot passes through the clip body, it is fixed between the clip body and the baffle.
10. A single-pole six-throw coaxial switch, characterized in that, include: The circuit control system is used to provide operating voltage and control signals to the single-pole six-throw coaxial switch; An electromagnetic drive system is used to transmit control signals from a circuit control system to a microwave transmission system via mechanical motion. And the microwave transmission system as described in any one of claims 1-9, for realizing the transmission and switching of broadband microwave signals.