CN-224232976-U - High-density, high-isolation and easy-to-detach radio frequency spring needle assembly

CN224232976UCN 224232976 UCN224232976 UCN 224232976UCN-224232976-U

Abstract

The utility model relates to the technical field of microwaves, and discloses a high-density, high-isolation and easy-to-detach radio frequency spring needle assembly, which comprises a plurality of radio frequency spring needles, a plurality of grounding spring needles, a filling medium and a metal shell. The single radio frequency spring needle, the filling medium and the metal shell form a group of coaxial structures together, each two adjacent groups of coaxial structures share one or two grounding spring needles, and all the coaxial structures share the metal shell. The utility model is mainly used for the interconnection transmission of radio frequency signals and has the advantages of high density, miniaturization, high isolation, easy disassembly, high reliability and the like.

Inventors

LEI TING
ZHENG JIANSHU
LI XIAOMING
ZHANG HAIFU
DUN SHUBO
ZHU HAIBO
ZHOU ZIWEI
YU HUIXIAN

Assignees

中国电子科技集团公司第五十四研究所

Dates

Publication Date: 20260512
Application Date: 20250418

Claims (10)

1. The high-density, high-isolation and easy-to-detach radio frequency spring needle assembly is characterized by comprising radio frequency spring needles, grounding spring needles, a filling medium and a metal shell, wherein a single radio frequency spring needle is fixed in the filling medium, a plurality of grounding spring needles are placed around the filling medium and fixed in the metal shell, and the grounding spring needles are tightly contacted with the metal shell to form electrical connection.
2. The high density, high isolation, readily removable rf spring pin assembly of claim 1, wherein a single rf spring pin and its surrounding ground spring pins, fill medium, metal housing together form a set of coaxial structures, each adjacent two sets of coaxial structures sharing one or two ground spring pins.
3. The high density, high isolation, readily removable rf pogo pin assembly of claim 2, wherein the coaxial structures share a metal housing.
4. The high-density, high-isolation, readily detachable rf pogo pin assembly of claim 1, wherein said rf pogo pin and said ground pogo pin each comprise a pin head, a spring and a pin housing, wherein said pin head is located in said pin housing and is in sliding engagement with said spring, and wherein said spring is located in said pin housing and wherein an inner end of said pin head abuts said spring.
5. The high-density, high-isolation, easy-to-detach rf spring needle assembly of claim 4 wherein the number of needles in the needle housing is two and the two ends of the spring are respectively located at the two ends of the needle housing and slidably engaged with the needle housing and the two ends of the spring are respectively abutted against the inner ends of the two needles.
6. The high-density, high-isolation, readily removable rf spring needle assembly of claim 4 wherein said needle has a bulky portion at an inner end thereof and said needle housing terminates in a gathered portion, said bulky portion being located inwardly of said gathered portion.
7. The high density, high isolation, readily removable rf spring needle assembly of claim 4 wherein said needle, spring and needle housing are centered about one another.
8. The high density, high isolation, readily removable rf pogo pin assembly of claim 1, wherein said fill medium is an insulating material.
9. The high-density, high-isolation and easy-to-detach radio frequency spring needle assembly of claim 1, wherein the metal housing is a split structure of an upper section and a lower section, and the two split structures are fixed by welding or gluing.
10. The high-density, high-isolation and easy-to-detach radio frequency spring needle assembly according to claim 4, wherein the metal shell is provided with a through hole for matching with a needle shell, the through hole is of a necking structure, the needle head extends out of the necking position, and the needle shell is positioned on the inner side of the necking.

Description

High-density, high-isolation and easy-to-detach radio frequency spring needle assembly Technical Field The utility model belongs to the technical field of microwaves, and discloses a high-density, high-isolation and easy-to-detach radio frequency spring needle assembly. Background In recent years, as the active phased array is developed towards miniaturization, light weight and high integration, the requirements on miniaturization and high density of the internal interconnection design of the active phased array are also higher and higher, and the contact type blind-mate connector provides a new thought for the three-dimensional integration design of the active phased array due to the advantages of low height, high density and small volume. The contact type blind-insert connector mainly comprises a spring needle connector and a hair button connector, wherein the axial blind-insert floating amount of the hair button connector is small, the contact type blind-insert connector is suitable for interconnection among boards of more dwarf and small units, and the axial blind-insert floating amount of the spring needle connector is large, so that the contact type blind-insert connector is more suitable for occasions with large board spacing and multipoint blind-insert. At present, a spring pin connector is more used for transmitting power and control signals and less used for transmitting radio frequency signals, a single spring pin is usually assembled in a metal frame directly by the conventional radio frequency transmission scheme, when the metal frame is used as a radio frequency ground, a circuit substrate and the metal frame are required to be closely contacted to ensure good grounding, but under the condition of interconnection between large-area boards, the printed boards and the metal frame are processed to generate warpage and unevenness, wherein the warpage of the printed boards is relatively more prominent, the good grounding is usually difficult to ensure in the assembling process, the circuit substrate is excessively forced, the printed boards are deformed while the grounding is ensured, the metal pads are damaged, the spring pin heads are stressed excessively or are stressed unevenly to be damaged, and the circuit substrate is excessively forced, and the problems of poor radio frequency grounding, adjacent signal crosstalk, non-ideal electromagnetic shielding and the like are caused. Meanwhile, the single spring needle is directly assembled, the size of the limit hole on the metal frame is high in machining difficulty, the hole is too large, the spring needle is possibly damaged by bending due to the fact that the stress direction is not vertical when the spring needle is pressed, the hole is too small, the spring needle is difficult to assemble, and operability and maintainability are poor. Disclosure of utility model The utility model provides a high-density, high-isolation and easy-to-detach radio frequency spring pin assembly aiming at the possible problems in the current spring pin connector application. The high-density radio frequency signal transmission device can be applied to high-density radio frequency signal interconnection transmission between boards, and has the advantages of miniaturization, high isolation, easy disassembly, high reliability and the like. In order to achieve the above purpose, the present utility model provides the following technical solutions: A high-density, high-isolation and easy-to-detach radio frequency spring needle assembly comprises a radio frequency spring needle, a grounding spring needle, a filling medium and a metal shell, wherein a single radio frequency spring needle is fixed in the filling medium, a plurality of grounding spring needles are placed around the filling medium and fixed in the metal shell, and the grounding spring needle is tightly contacted with the metal shell to form electric connection. Further, the single radio frequency spring needle and the grounding spring needle, the filling medium and the metal shell around the single radio frequency spring needle jointly form a group of coaxial structures, and each two adjacent groups of coaxial structures share one or two grounding spring needles. Further, the coaxial structure shares a metal housing. Furthermore, the radio frequency spring needle and the grounding spring needle comprise a needle head, a spring and a needle shell, wherein the needle head is positioned in the needle shell and is in sliding fit with the needle shell, the spring is positioned in the needle shell, and the inner end of the needle head is abutted against the spring. Further, the two needles in the needle shell are respectively arranged at the two ends of the needle shell and are in sliding fit with the needle shell, and the two ends of the spring are respectively propped against the inner ends of the two needles. Furthermore, the inner end of the needle head is provided with a huge part, the tail end of the needle s