Single-ended axial and radial floating radio frequency coaxial connector
By designing single-ended axial and radial floating radio frequency coaxial connectors, the axial and radial floating of the plug-in is achieved using a floating spring, which solves the problem of high alignment requirements in the prior art and improves the reliability and electrical performance of the connector.
Patent Information
- Application Number
- CN202422316367.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The high alignment requirements of existing RF coaxial connectors between boards or modules lead to increased processing costs and poor electrical performance. Especially in RF systems, mechanical tolerances are difficult to ensure high consistency.
A single-ended axial and radial floating radio frequency coaxial connector is designed to ensure that the connector remains reliable in a certain range by providing a fixed and floating housing cavity in the installation outer conductor and using a floating spring to achieve axial and radial floating of the second plug-in.
It improves the high consistency and electrical performance of the connector, reduces the accuracy requirements for processing and assembly, reduces product scrapping rate, adapts to position deviations, and ensures stable electrical performance.
Smart Images
Figure CN223194129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical connectors, in particular to a single-end axially and radially floating radio frequency coaxial connector. Background Art
[0002] RF coaxial connectors can be used to interconnect circuit boards, RF modules, and circuit boards. In the electronics and communications industry, driven by market trends, connectors are increasingly miniaturized and cost-effective, driving a higher degree of modularity in electronics and communications products.
[0003] Most mainstream connectors on the market currently utilize a hard blind-mating connection method, which places high demands on component positioning accuracy on the module. Misalignment of the holes between two boards or modules can lead to stress concentration on the solder joints and even misalignment, resulting in increased product scrap rates, reduced product lifespan, and high processing costs. This is particularly true in RF systems, where several or even dozens of RF coaxial connectors are typically installed on the same panel. Relying solely on mechanical tolerances to ensure high consistency requires high processing and assembly precision, and any misalignment can easily lead to poor electrical performance. Utility Model Content
[0004] In order to solve the above problems, the present invention proposes a single-ended axially and radially floating radio frequency coaxial connector which has low requirements on installation position and can meet radio frequency performance.
[0005] The main contents of the utility model include: an installation outer conductor having an open fixed accommodating cavity at one axial end and an open floating accommodating cavity at the other axial end; an axially extending through hole is provided in the middle of the installation outer conductor, the through hole communicating with the fixed accommodating cavity and the floating accommodating cavity; the diameter of the through hole is smaller than the diameters of the fixed accommodating cavity and the floating accommodating cavity, so that steps are formed in the installation outer conductor at the corresponding two side accommodating cavities;
[0006] a first connector fixed in the fixed accommodating cavity, the first connector comprising a first dielectric body and a first inner conductor fixed in the first dielectric body, wherein one end of the first inner conductor away from the floating accommodating cavity extends outside the fixed accommodating cavity;
[0007] A second connector is movably disposed in the floating accommodating cavity, a floating spring is connected between the second connector and the floating accommodating cavity, the second connector includes a second outer conductor and a second inner conductor disposed within the second outer conductor, a second dielectric body is disposed between the second inner conductor and the second outer conductor, a portion of the second outer conductor extends into the through hole and is in elastic contact with the inner wall of the through hole.
[0008] Preferably, the first inner conductor has a first plug-in end and a first fixed end axially opposite to each other, the first fixed end is arranged on a side away from the floating accommodating cavity, the first plug-in end is built into the fixed accommodating cavity and a first plug-in hole is opened corresponding to the through hole, and the first plug-in hole is connected to the through hole.
[0009] Preferably, the second inner conductor has a second plug-in end and a second fixed end axially opposite to each other, the second plug-in end is fixed in the second dielectric body and has a second plug-in hole at the end, and the second fixed end passes through the through hole and is inserted into the first plug-in hole.
[0010] Preferably, the first dielectric body has a cylindrical inner cavity with two ends open, and a first limiting step is provided in the cylindrical inner cavity, which protrudes radially toward the axis center. The first plug-in end of the first inner conductor abuts against the first limiting step, and the outer wall of the first plug-in end has a first barb, and the tip of the first barb is close to the first limiting step.
[0011] Preferably, the second dielectric body has a cylindrical inner cavity with two ends open, and a second limiting step protruding radially toward the axis is provided at one end of the cylindrical inner cavity close to the through hole, the second plug-in end of the second inner conductor abuts against the second limiting step, and the outer wall of the second plug-in end has a second barb, and the tip of the second barb is close to the second limiting step.
[0012] Preferably, the outer wall of the second outer conductor has a protruding abutment block in the circumference, and a limit interval is formed between the abutment block and the floating accommodating cavity. The floating spring is placed in the limit interval, one end of which abuts against the abutment block and the other end abuts against the step end surface on one side of the floating accommodating cavity.
[0013] Preferably, a receiving groove is provided at an opening of the installation outer conductor corresponding to one side of the floating receiving cavity, and a retaining ring is provided in the receiving groove, and the retaining ring restricts the second connector in the floating receiving cavity.
[0014] Preferably, a first limiting protrusion is provided on the circumference of the first dielectric body, and a first limiting groove is provided on the inner wall of the fixed accommodating cavity, and the first limiting protrusion is correspondingly clamped in the first limiting groove.
[0015] Preferably, a second limiting protrusion is provided on the circumference of the second dielectric body, and a second limiting groove is provided on the inner wall of the second outer conductor. The second limiting protrusion is correspondingly locked in the second limiting groove.
[0016] Preferably, the mounting outer conductor includes an integrally formed sleeve body and a first connecting plate, the first connecting plate is arranged at one axial end of the sleeve body, and a plurality of mounting holes are formed on the first connecting plate.
[0017] The beneficial effects of this utility model include a first connector fixedly mounted at one axial end of the connector and a second, floating connector at the other axial end. The second connector has a certain degree of axial and radial floating, maintaining a reliable connection between the two boards within these floating ranges. This floating RF coaxial connector has an axial floating length of 0-2mm. When multiple RF coaxial connectors are connected to the same panel, this effectively improves height consistency, ensures proper mating, and enhances electrical performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment;
[0019] Figure 2 This is a schematic cross-sectional view of a preferred embodiment;
[0020] Reference numerals:
[0021] 1. Install outer conductor; 101. Sleeve body; 102. First connecting plate; 11. Fixed accommodating cavity; 111. First limiting groove; 12. Floating accommodating cavity; 13. Through hole;
[0022] 2. First connector; 21. First dielectric body; 211. First limiting protrusion; 212. First limiting step; 22. First inner conductor; 221. First plug end; 222. First fixing end; 223. First plug hole; 224. First barb;
[0023] 3. Second connector; 31. Second outer conductor; 3101. First structural portion; 3102. Second structural portion; 311. Abutment block; 312. Second limiting groove; 313. Second limiting step; 32. Second dielectric body; 321. Second limiting protrusion; 33. Second inner conductor; 331. Second plug end; 332. Second fixing end; 333. Second plug hole; 334. Second barb;
[0024] 4. Floating spring; 5. Retaining ring. DETAILED DESCRIPTION
[0025] The technical solution protected by the present utility model is described in detail below with reference to the accompanying drawings.
[0026] like Figure 1 and 2 As shown, the present application proposes a single-ended axially and radially floating radio frequency coaxial connector, which includes an outer conductor 1 , a first connector 2 and a second connector 3 .
[0027] like Figure 1 and 2 As shown, a fixed accommodating cavity 11 with an opening is provided at one axial end of the installation outer conductor 1, and the first plug-in connector 2 is fixedly arranged in the fixed accommodating cavity 11; a floating accommodating cavity 12 with an opening is provided at the other axial end, and the second plug-in connector 3 is movably arranged in the floating accommodating cavity 12, and the second plug-in connector 3 can float along the axial direction of the installation outer conductor 1; an axially extending through hole 13 is provided in the middle part of the installation outer conductor 1, and the through hole 13 connects the fixed accommodating cavity 11 and the floating accommodating cavity 12; the diameter of the through hole 13 is smaller than the diameter of the fixed accommodating cavity 11 and the floating accommodating cavity 12, so that steps are formed at the corresponding two side accommodating cavities in the installation outer conductor 1.
[0028] like Figure 1 and 2 As shown, in this embodiment, the mounting outer conductor 1 comprises an integrally formed sleeve body 101 and a first connecting plate 102. The first connecting plate 102 is provided with corresponding mounting holes. The mounting outer conductor 1 is assembled to the panel via the first connecting plate 102, achieving a secure installation of the RF coaxial connector. During assembly, the open end of the floating accommodating cavity 12 faces upward, and the first connector 2 within the fixed accommodating cavity 11 is correspondingly inserted into the panel. The axial and radial floating motion of the second connector 3 ensures a high degree of connector consistency on the panel.
[0029] like Figure 1 and 2 As shown, the first connector 2 includes a first dielectric body 21 and a first inner conductor 22 disposed within the first dielectric body 21. The first dielectric body 21 provides insulation between the mounting outer conductor 1 and the first inner conductor 22. The first inner conductor 22 is fixed within the first dielectric body 21, and the first dielectric body 21 is fixed within the mounting outer conductor 1, thereby achieving single-ended fixation of the RF coaxial connector.
[0030] like Figure 1 and 2 As shown, the first dielectric body 21 is fixedly disposed in the fixed accommodation cavity 11, with one end abutting against a step inside the installation outer conductor 1 and the other end extending outside the installation outer conductor 1. A raised first limiting protrusion 211 is provided circumferentially on the first dielectric body 21, and a first limiting groove 111 is provided circumferentially on the inner wall of the fixed accommodation cavity 11. The first limiting protrusion 211 is locked in the first limiting groove 111 to achieve axial positioning of the first dielectric body 21 and the installation outer conductor 1.
[0031] like Figure 1 and 2As shown, the first inner conductor 22 has an axially opposed first plug end 221 and a first fixed end 222. The diameter of the first plug end 221 is larger than the diameter of the first fixed end 222. The first fixed end 222 protrudes from the end of the first dielectric body 21 away from the floating accommodation cavity 12 and extends to the outside of the mounting outer conductor 1. The first plug end 221 is embedded in the fixed accommodation cavity 11 and a first plug hole 223 is provided at a position corresponding to the through hole 13. The first plug hole 223 is connected to the through hole 13. The first dielectric body 21 has a cylindrical inner cavity with two ends open. The first inner conductor 22 is placed in the cylindrical inner cavity. The cylindrical inner cavity is provided with a first limiting step 212 that protrudes radially toward the axis, so that the first plug end 221 of the first inner conductor 22 is correspondingly engaged with the first limiting step 212. Preferably, a first barb 224 is provided on the outer wall of the first plug end 221 of the first inner conductor 22 , and the tip of the first barb 224 is close to the first limiting step 212 , thereby achieving axial positioning between the first inner conductor 22 and the first dielectric body 21 .
[0032] like Figure 1 and 2 As shown, the second connector 3 is movably disposed within the floating chamber 12. A floating spring 4 is connected between the second connector 3 and the mounting outer conductor 1, enabling the second connector 3 to float axially relative to the mounting outer conductor 1. A receiving groove is provided at the opening of the mounting outer conductor 1 corresponding to one side of the floating chamber 12. A retaining ring 5 is disposed within the receiving groove. The retaining ring 5 is confined within the receiving groove by riveting the end of the mounting outer conductor 1. The retaining ring 5 confines the second connector 3 within the floating chamber 12, preventing it from falling out during the floating process.
[0033] like Figure 1 and 2 As shown, the second connector 3 includes a second outer conductor 31, a second dielectric body 32 and a second inner conductor 33. The second inner conductor 33 is placed in the second outer conductor 31, and the second dielectric body 32 is arranged between the second outer conductor 31 and the second inner conductor 33 to achieve insulation between the second outer conductor 31 and the second inner conductor 33.
[0034] like Figure 1 and 2As shown, the outer wall of the second outer conductor 31 has a protruding abutment block 311 on its circumference. The abutment block 311 and the step in the floating chamber 12 form a limiting interval. The floating spring 4 is placed in the limiting interval and can be extended and retracted in the axial direction. One end of the floating spring 4 abuts against the abutment block 311, and the other end abuts against the end face of the step on the side of the floating chamber 12. In this embodiment, the floating spring 4 is correspondingly sleeved on the circumference of the second outer conductor 31 to improve the stability of the second connector 3 as a whole during the floating process. In other embodiments, a number of floating springs 4 can be correspondingly provided along the circumference of the second outer conductor 31, all of which are axially placed in the limiting interval. The axial floating of the second connector 3 is achieved by the floating spring 4. In this embodiment, the maximum axial floating amount can reach 2 mm.
[0035] like Figure 1 and 2 As shown, the second outer conductor 31 preferably comprises a first structural portion 3101 and a second structural portion 3102 riveted together. The first structural portion 3101 is positioned within the floating chamber 12, with abutment blocks 311 correspondingly disposed on the outer wall of the first structural portion 3101. One end of the second structural portion 3102 is riveted to the first structural portion 3101, while the other end extends and is positioned within the through-hole 13 for mounting the outer conductor 1. The second structural portion 3102 elastically contacts the mounting outer conductor 1, allowing the second connector 3 to float radially. In this embodiment, the maximum radial float can reach 0.5 mm.
[0036] like Figure 1 and 2 As shown, a raised second limiting protrusion 321 is provided on the circumference of the outer wall of the second dielectric body 32, and a second limiting groove 312 is provided on the circumference of the inner wall of the second outer conductor 31. The second limiting protrusion 321 is correspondingly locked in the second limiting groove 312 to achieve axial positioning between the second dielectric body 32 and the second outer conductor 31. In this embodiment, the second limiting groove 312 is correspondingly opened on the circumference of the inner wall of the first structural portion 3101.
[0037] like Figure 1 and 2As shown, the second inner conductor 33 has an axially opposed second plug end 331 and a second fixed end 332. The diameter of the second plug end 331 is larger than that of the second fixed end 332. The second plug end 331 is embedded in the second outer conductor 31 and has a second plug hole 333 axially defined at its end. The second fixed end 332 passes through the through hole 13 from within the floating chamber 12 and is correspondingly inserted into the first plug hole 223. During axial and radial floating, the second fixed end 332 remains plugged into the first plug hole 223, thereby enabling RF electromagnetic field signal transmission in the RF coaxial connector. The second dielectric body 32 has a cylindrical inner cavity with two open ends. The second inner conductor 33 is positioned within this cylindrical inner cavity. A second stopper 313 protruding radially toward the axis is provided at one end of the second dielectric body 32 near the through hole 13, so that the second plug end 331 of the second inner conductor 33 is correspondingly engaged with the second stopper 313. Preferably, a second barb 334 is provided on the outer wall of the second plug end 331 of the second inner conductor 33 , and the tip of the second barb 334 is close to the second limiting step 313 , thereby achieving axial positioning between the second inner conductor 33 and the second dielectric body 32 .
[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A single-ended axially and radially floating radio frequency coaxial connector, characterized in that: Mainly include: An outer conductor is installed, having an open fixed accommodating cavity at one axial end and an open floating accommodating cavity at the other axial end. An axially extending through hole is provided in the middle of the outer conductor, the through hole communicating with the fixed accommodating cavity and the floating accommodating cavity. The diameter of the through hole is smaller than that of the fixed accommodating cavity and the floating accommodating cavity, so that steps are formed in the outer conductor at the locations corresponding to the accommodating cavities on both sides. a first connector fixed in the fixed accommodating cavity, the first connector comprising a first dielectric body and a first inner conductor fixed in the first dielectric body, wherein one end of the first inner conductor away from the floating accommodating cavity extends outside the fixed accommodating cavity; A second connector is movably disposed in the floating accommodating cavity, a floating spring is connected between the second connector and the floating accommodating cavity, the second connector includes a second outer conductor and a second inner conductor disposed within the second outer conductor, a second dielectric body is disposed between the second inner conductor and the second outer conductor, a portion of the second outer conductor extends into the through hole and is in elastic contact with the inner wall of the through hole.
2. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: The first inner conductor has a first plug-in end and a first fixed end axially opposite to each other. The first fixed end is arranged on a side away from the floating accommodating cavity. The first plug-in end is built into the fixed accommodating cavity and a first plug-in hole is opened corresponding to the through hole. The first plug-in hole is connected to the through hole.
3. The single-ended axially and radially floating radio frequency coaxial connector according to claim 2, characterized in that: The second inner conductor has a second plug-in end and a second fixed end axially opposite to each other. The second plug-in end is fixed in the second dielectric body and has a second plug-in hole at the end. The second fixed end passes through the through hole and is inserted into the first plug-in hole.
4. The single-ended axially and radially floating radio frequency coaxial connector according to claim 2, characterized in that: The first dielectric body includes a cylindrical inner cavity with two ends open. A first limiting step is provided in the cylindrical inner cavity, which protrudes radially toward the axis. The first plug-in end of the first inner conductor abuts against the first limiting step. The outer wall of the first plug-in end includes a first barb, and the tip of the first barb is close to the first limiting step.
5. The single-ended axially and radially floating radio frequency coaxial connector according to claim 3, characterized in that: The second dielectric body includes a cylindrical inner cavity with two ends open. A second limiting step protruding radially toward the axis is provided at one end of the cylindrical inner cavity close to the through hole. The second plug-in end of the second inner conductor abuts against the second limiting step. The outer wall of the second plug-in end includes a second barb, and the tip of the second barb is close to the second limiting step.
6. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: The outer wall of the second outer conductor has a protruding abutment block on its circumference, and a limiting interval is formed between the abutment block and the floating accommodating cavity. The floating spring is placed in the limiting interval, with one end abutting against the abutment block and the other end abutting against the step end surface on one side of the floating accommodating cavity.
7. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: The installation outer conductor is provided with an accommodating groove at an opening on one side of the floating accommodating cavity. A retaining ring is provided in the accommodating groove, and the retaining ring restricts the second connector in the floating accommodating cavity.
8. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: A first limiting protrusion is provided on the circumference of the first dielectric body, and a first limiting groove is provided on the inner wall of the fixed accommodating cavity. The first limiting protrusion is correspondingly clamped in the first limiting groove.
9. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: A second limiting protrusion is provided on the circumference of the second dielectric body, and a second limiting groove is provided on the inner wall of the second outer conductor. The second limiting protrusion is correspondingly clamped in the second limiting groove.
10. The single-ended axially and radially floating radio frequency coaxial connector according to claim 1, characterized in that: The mounting outer conductor includes an integrally formed sleeve body and a first connecting plate. The first connecting plate is arranged at one axial end of the sleeve body. A plurality of mounting holes are formed on the first connecting plate.