A radio frequency triaxial vacuum adapter
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-08-14
AI Technical Summary
[0003]目前，传统空气绝缘结构的三同轴转接头在高频应用中存在以下问题：传统介电材料在高频下易产生介电损耗，导致信号衰减和相位失真；装配精度不足易引发阻抗失配，影响信号传输质量；普通橡胶密封圈在极端温度或真空环境下易老化，导致密封失效，加上潮气侵入进一步造成高频信号衰减劣化，同时现有的结构复杂，价格昂贵，拆卸不便，维护成本高
[0022]本实用新型的射频三同轴真空转接头，将呈台阶状的外隔离层、屏蔽层和内隔离层依次通过挤压部件从外到内依次压紧，形成超真空屏障，阻断潮气侵入，装配精度高，真空耐受性达10⁻8 mbar，确保信号传输的稳定性和质量。
Smart Images
Figure CN224637562U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radio frequency connector technology, and in particular to a radio frequency triaxial vacuum adapter. Background Technology
[0002] With the development of technologies such as high-frequency communication (5G / 6G), quantum computing, and high-precision medical imaging, the requirements for signal transmission integrity in radio frequency systems are becoming increasingly stringent. As a core interconnection component, the triaxial adapter needs to maintain impedance stability and low signal loss under extreme environments (ultra-high vacuum, ultra-low temperature, strong electromagnetic interference).
[0003] Currently, traditional air-insulated triaxial adapters have the following problems in high-frequency applications: traditional dielectric materials are prone to dielectric loss at high frequencies, leading to signal attenuation and phase distortion; insufficient assembly precision can easily cause impedance mismatch, affecting signal transmission quality; ordinary rubber sealing rings are prone to aging in extreme temperatures or vacuum environments, leading to sealing failure, and moisture intrusion further causes high-frequency signal attenuation and degradation. At the same time, the existing structure is complex, expensive, inconvenient to disassemble, and has high maintenance costs. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing a radio frequency triaxial vacuum adapter with good vacuum shielding performance, good signal integrity, low cost, and easy maintenance.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a radio frequency triaxial vacuum adapter, comprising:
[0006] Core wire;
[0007] The inner isolation layer consists of two inner isolation layers symmetrically sleeved on the core wire, and the two isolation layers are connected by an extrusion assembly. The inner isolation layer is stepped.
[0008] The shielding layer comprises two shielding layers symmetrically disposed on the inner isolation layer. The shielding layer is stepped, wherein the outer stepped surface of the inner isolation layer and the inner stepped surface of the shielding layer are connected by a first extrusion member.
[0009] The outer isolation layer consists of two outer isolation layers symmetrically fitted onto the shielding layer. The outer isolation layer is stepped, and the outer stepped surface of the shielding layer is connected to the inner stepped surface of the outer isolation layer by a second extrusion member.
[0010] A housing is fitted onto the two outer isolation layers, wherein the inner wall of the housing is provided with a third extrusion member that contacts the outer stepped surface of one end of the outer isolation layer;
[0011] A pressure cap is fitted onto the outer isolation layer at the other end and can be screwed tightly connected to the housing. A fourth pressing component is provided between the pressure cap and the outer stepped surface of the outer isolation layer at the other end.
[0012] When the pressure cap is screwed onto the housing, the first extrusion component, the second extrusion component, the third extrusion component, and the fourth extrusion component are extruded and expanded to form a vacuum isolation.
[0013] The grounding component is sleeved on the housing.
[0014] Preferably, the extrusion assembly includes an inner rubber ring disposed between two inner insulating layers.
[0015] Preferably, the first extrusion component, the second extrusion component, the third extrusion component, and the fourth extrusion component are rubber rings, and the size of the rubber rings is [missing information].
[0016] Preferably, the grounding component includes a grounding plate with welding holes for welding.
[0017] Preferably, a fifth extrusion member is provided on one side of the housing.
[0018] Preferably, the outer surface of the housing has external threads; the gland has internal threads that are threadedly connected to the external threads.
[0019] Preferably, the first extrusion component, the second extrusion component, the third extrusion component, the fourth extrusion component, and the fifth extrusion component are made of fluororubber or perfluoroether.
[0020] Preferably, the inner and outer isolation layers are made of special ceramics or polymers.
[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0022] This utility model's radio frequency triaxial vacuum adapter sequentially presses a stepped outer isolation layer, a shielding layer, and an inner isolation layer from the outside in through a pressing component, forming a super vacuum barrier to prevent moisture intrusion. It features high assembly precision and a vacuum tolerance of 10⁻⁻⁻⁵. 8 mbar ensures the stability and quality of signal transmission.
[0023] Secondly, the inner and outer isolation layers use special ceramics or polymers (such as PTFE) with stable dielectric constants and extremely low high-frequency losses as low-loss dielectric materials to reduce phase distortion and attenuation in signal transmission.
[0024] In addition, the isolation layer, shielding layer and inner isolation layer form an integrated snap-on quick-release structure, which is easy to disassemble, has low maintenance costs, and is priced at less than 1 / 10 of similar foreign products. Attached Figure Description
[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings:
[0026] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0027] Figure 2 for Figure 1 Internal sectional view;
[0028] Figure 3 for Figure 1 A three-dimensional structural diagram omitting the cap;
[0029] Figure 4 This is a three-dimensional structural diagram of the outer isolation layer in one embodiment of the present invention;
[0030] Figure 5 This is a schematic diagram of the structure when the core wire, inner insulating layer, and extrusion assembly are separated in one embodiment of the present invention;
[0031] The components include: core wire 1, inner insulation layer 2, extrusion assembly 3, shielding layer 4, first extrusion component 5, outer insulation layer 6, second extrusion component 7, shell 8, third extrusion component 9, pressure cap 10, fourth extrusion component 11, grounding component 12, grounding plate 120, welding hole 121, fifth extrusion component 13, inner rubber ring 30, and groove 31. Detailed Implementation
[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0033] This invention provides a radio frequency triaxial vacuum adapter to solve the problems of signal attenuation and phase distortion, poor signal transmission quality and sealing performance, high frequency signal attenuation and degradation, high price, inconvenient disassembly, and high maintenance cost of existing vacuum adapters.
[0034] For ease of understanding, the specific processes in the embodiments of this application are described below. Please refer to [link / reference]. Figures 1 to 2An embodiment of this application provides a radio frequency triaxial vacuum adapter, comprising a core wire 1, an inner isolation layer 2, a shielding layer 4, an outer isolation layer 6, a housing 8, a pressure cap 10, and a grounding component 12; the core wire 1 is used to conduct signals. The shielding layer 4 is sleeved on the inner isolation layer 2, and the outer isolation layer 6 is sleeved on the shielding layer 4; the housing 8 and the pressure cap 10 are sleeved on the outer isolation layer 6, and the housing 8 and the pressure cap 10 can be screwed together.
[0035] See Figure 2 and 5 Two inner isolation layers 2 are symmetrically fitted onto the core wire 1, and the two isolation layers 2 are connected by a compression assembly 3. The compression assembly 3 includes an inner rubber ring 31. In this embodiment, the two inner isolation layers 2 are designated as a left inner isolation layer and a right inner isolation layer. The right inner isolation layer has a groove 31 on the opposite side of the left inner isolation layer. The groove is used to place the inner rubber ring 30, and the inner rubber ring 30 protrudes outward from the groove 31. When the left and right inner isolation layers are tightened by the housing 8 and the pressure cap 10, they are squeezed against each other, thereby squeezing the protruding part of the inner rubber ring 30, thus achieving a high-efficiency seal between the two through the inner rubber ring 30. In addition, the two inner isolation layers 2 in this embodiment are stepped, and the material used for the inner isolation layers 2 is polytetrafluoroethylene. The function of the inner isolation layers 2 is to isolate the signal between the core wire 1 and the shielding layer 4.
[0036] Two shielding layers 4 are symmetrically fitted onto the inner isolation layer 2. The shielding layers 4 are also stepped. When the shielding layer 4 is fitted onto the inner isolation layer 2, the outer stepped surface of the inner isolation layer 2 and the inner stepped surface of the shielding layer 4 are connected by a first pressing member 5. When the housing 8 and the pressure cap 10 are screwed together, the first pressing member 5 is compressed and expanded, thereby achieving an efficient seal between the shielding layer 4 and the inner isolation layer 2. In this embodiment, the shielding layer 4 is a copper layer, primarily serving a shielding function to protect the core wire 1 signal from external electrical signals.
[0037] See Figure 4 Two outer isolation layers 6 are symmetrically fitted onto the shielding layer 4. Each outer isolation layer 6 is also stepped, with the outer stepped surface of the shielding layer 4 connected to the inner stepped surface of the outer isolation layer 6 by a second pressing member 7. Similarly, when the housing 8 and the pressure cap 10 are screwed together, the second pressing member 7 is compressed and expanded, thereby achieving an efficient seal between the outer isolation layer 6 and the shielding layer 4. In this embodiment, the outer isolation layer 6 is mainly used to isolate the shielding layer 4 from the grounding member 12.
[0038] The housing 8 is fitted onto the two outer isolation layers 6. A third pressing member 9 is provided on the inner wall of the housing 8, contacting the outer stepped surface of the left outer isolation layer 6. A pressure cap 10 is fitted onto the right outer isolation layer 6, and a fourth pressing member 11 is provided between the pressure cap and the outer stepped surface of the right outer isolation layer. Thus, when the housing 8 and the pressure cap are tightened, the third pressing member 9 and the fourth pressing member 11 expand, thereby achieving a highly efficient seal between the housing 8, the pressure cap 10, and the outer isolation layers 6. Furthermore, in this embodiment, the housing 8 is made of metal, specifically passivated stainless steel.
[0039] A grounding component 12 is fitted onto the housing 8. The grounding component includes a grounding plate 120 with welding holes 121 for welding. The ground wire is welded through the welding holes 121 to achieve the grounding effect. The grounding component 12 is also made of metal.
[0040] Furthermore, the first extrusion component 5, the second extrusion component 7, the third extrusion component 9, and the fourth extrusion component 11 are rubber rings, and the first extrusion component 5 and the second extrusion component 7 have the same diameter, the third extrusion component 9 and the fourth extrusion component 11 have the same diameter, and are larger than the diameter of the first extrusion component 5 and the second extrusion component 7; secondly, the extrusion components are made of fluororubber or perfluoroether.
[0041] Furthermore, a fifth extrusion member 13 is provided on one side of the housing 8, so that when the left end of the housing 8 is threadedly connected to an external device, it is sealed by the fifth extrusion member 13.
[0042] Furthermore, the outer surface of the housing 8 has external threads; the pressure cap 10 is provided with a threaded connection to the external threads, and the housing 8 and the pressure cap 10 are rotatably connected by the threads.
[0043] Furthermore, the inner isolation layer 2 and the outer isolation layer 6 use special ceramics or polymers (such as PTFE) with stable dielectric constant and extremely low high-frequency loss as low-loss dielectric materials to reduce phase distortion and attenuation in signal transmission.
[0044] based on Figures 1 to 5 During specific assembly:
[0045] First, two inner isolation layers 2 are symmetrically fitted onto the core wire 1 and connected by an inner rubber ring 31; then, a shielding layer 4 is symmetrically fitted onto the two inner isolation layers 2, with its inner stepped surface connected to the outer stepped surface of the inner isolation layer 2 by a first extrusion member 5; next, two outer isolation layers 6 are symmetrically fitted onto the two shielding layers 4, with their inner stepped surfaces connected to the outer stepped surfaces of the shielding layer 4 by a second extrusion member 7.
[0046] Then, the housing 8 is fitted onto the outer isolation layer 6, and its inner wall is provided with a third extrusion component 9, which contacts the outer stepped surface of one end of the outer isolation layer 6. Next, the pressure cap 10 is fitted onto the other end of the outer isolation layer 6, and a fourth extrusion component 11 is provided between the two. Then, the pressure cap 10 is screwed onto the housing 8, so that the four extrusion components expand to form a vacuum seal.
[0047] This utility model's radio frequency triaxial vacuum adapter sequentially presses the stepped outer isolation layer, shielding layer, and inner isolation layer from the outside in through a pressing component, forming a vacuum barrier that effectively prevents moisture intrusion and ensures stable and reliable signal transmission quality. Simultaneously, it integrates a snap-on quick-release structure, fundamentally solving the signal integrity bottleneck in high-frequency communication, quantum computing, and other fields, and enabling rapid maintenance and ultra-low-cost manufacturing. Compared to similar foreign vacuum-sealed adapters, its price is less than 1 / 10, providing a high-performance, cost-effective underlying hardware guarantee for next-generation radio frequency systems. It uses special ceramics or polymers (such as PTFE) with stable dielectric constants and extremely low high-frequency loss as the low-loss dielectric material, reducing phase distortion and attenuation in signal transmission.
[0048] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A radio frequency triaxial vacuum adapter, characterized in that, include: Core wire; The inner isolation layer consists of two inner isolation layers symmetrically sleeved on the core wire, and the two isolation layers are connected by an extrusion assembly. The inner isolation layer is stepped. The shielding layer comprises two shielding layers symmetrically disposed on the inner isolation layer. The shielding layer is stepped, wherein the outer stepped surface of the inner isolation layer and the inner stepped surface of the shielding layer are connected by a first extrusion member. The outer isolation layer consists of two outer isolation layers symmetrically fitted onto the shielding layer. The outer isolation layer is stepped, and the outer stepped surface of the shielding layer is connected to the inner stepped surface of the outer isolation layer by a second extrusion member. A housing is fitted onto the two outer isolation layers, wherein the inner wall of the housing is provided with a third extrusion member that contacts the outer stepped surface of one end of the outer isolation layer; A pressure cap is fitted onto the outer isolation layer at the other end and can be screwed tightly connected to the housing. A fourth pressing component is provided between the pressure cap and the outer stepped surface of the outer isolation layer at the other end. When the pressure cap is screwed onto the housing, the first extrusion component, the second extrusion component, the third extrusion component, and the fourth extrusion component are extruded and expanded to form a vacuum isolation. The grounding component is sleeved on the housing.
2. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: The extrusion assembly includes an inner rubber ring disposed between two inner isolation layers.
3. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: The first extrusion component, the second extrusion component, the third extrusion component, and the fourth extrusion component are rubber rings. The first extrusion component and the second extrusion component have the same diameter, and the third extrusion component and the fourth extrusion component have the same diameter, but are larger than the diameters of the first extrusion component and the second extrusion component.
4. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: The grounding component includes a grounding plate with welding holes for welding.
5. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: A fifth extrusion component is provided on one side of the housing.
6. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: The outer surface of the housing has external threads; the pressure cap has internal threads that are threadedly connected to the external threads.
7. The radio frequency triaxial vacuum adapter as described in claim 5, characterized in that: The first extrusion component, the second extrusion component, the third extrusion component, the fourth extrusion component, and the fifth extrusion component are made of fluororubber or perfluoroether.
8. The radio frequency triaxial vacuum adapter as described in claim 1, characterized in that: The inner and outer isolation layers are made of special ceramics or polymers.