Grounding module based on hollow annular fuzz button and bidirectional elastic coaxial connector

Abstract

The invention provides a grounding module based on a hollow annular fuzz button and a bidirectional elastic coaxial connector. The grounding convex ring of the grounding module is of a double-step structure and comprises a first convex table and a second convex table which are connected, the first convex table partially protrudes out of the shell assembly, the first convex table is provided with a contact hole and a first containing hole which are communicated, and a contact ring surface formed by the first convex table is used for grounding. The elastic reed set comprises a plurality of elastic reeds arranged in the middle of the base in a surrounding mode, a groove is formed between every two adjacent elastic reeds, the elastic reed set is sequentially sleeved with the hollow annular fuzz button and the grounding protruding ring, and a plurality of compensation protruding pieces are arranged on the inner wall of the first containing hole at intervals. The compensation protruding pieces are inserted into the grooves in a one-to-one correspondence mode, so that each compensation protruding piece abuts against the two adjacent elastic reeds. According to the grounding module, surface contact grounding is realized, radial compensation is improved, and impedance continuity in the compression process is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coaxial connectors, and in particular to a grounding module based on a hollow annular wool button and a bidirectional elastic coaxial connector. Background Art

[0002] At present, in order to achieve the transmission of high-frequency microwave signals, the connector is required to have a more reliable grounding module to ensure better impedance matching and impedance continuity. Traditionally, the connector shell assembly is generally directly grounded. For example, Chinese patent number CN 107732518 A discloses a strongly sealed wool button RF coaxial connector, including an outer contact, a glass insulator, an engineering plastic insulator, a wool button, a contact cap and a center contact. The present invention adopts a structure in which a glass insulator is encapsulated between the center contact and the outer contact, and the wool button and the contact cap are arranged in the engineering plastic insulator and assembled with the outer contact. The grounding method of the present invention is to use the outer contact of the connector (i.e., the shell assembly) for rigid grounding, without axial and radial compensation, and is prone to impedance discontinuity problems.

[0003] Therefore, some scholars have proposed connectors with elastic grounding. For example, Chinese patent number CN115832796A discloses a double-floating millimeter-wave coaxial connector, which uses a variable-diameter elastomer to achieve elastic grounding. However, the diameter change of the variable-diameter elastomer is unstable, and it is easy for the edge of the grounding end of the variable-diameter elastomer to abut the ground, that is, line contact grounding occurs, and no radial compensation is provided, resulting in the problem of poor impedance continuity during the elastic grounding compression process. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a grounding module and a bidirectional elastic coaxial connector based on a hollow annular wool button to achieve surface contact elastic grounding of a grounding convex ring and improve radial compensation, thereby ensuring impedance continuity during the elastic grounding compression process.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A grounding module based on a hollow annular wool button is used to partially protrude outside a housing component of a bidirectional elastic coaxial connector. The grounding module based on the hollow annular wool button comprises:

[0007] Hollow ring fur buttons;

[0008] A grounding convex ring, the grounding convex ring is a double-step structure, the grounding convex ring includes a first convex platform and a second convex platform connected to each other, the first convex platform partially protrudes outside the shell assembly, the first convex platform is provided with a contact hole and a first receiving hole connected to each other, so that the first convex platform forms a contact annular surface, the contact annular surface is used for elastic grounding, the second convex platform is provided with a second receiving hole connected to the first receiving hole, the aperture of the second receiving hole is larger than the aperture of the first receiving hole, and the central axis of the first receiving hole coincides with the central axis of the second receiving hole;

[0009] A radial elastic contact body, the radial elastic contact body includes a base and an elastic spring group, the elastic spring group includes a plurality of elastic springs arranged around the middle of the base, and a groove is formed between every two adjacent elastic springs, the hollow annular wool button and the grounding convex ring are sequentially sleeved on the elastic spring group so that each elastic spring elastically abuts against the inner wall of the first accommodating hole, and the bottom surface of the second accommodating hole elastically abuts against the hollow annular wool button, and the inner wall of the first accommodating hole is provided with a plurality of compensation protrusions at intervals, the compensation protrusions are arranged one-to-one corresponding to the grooves, and the compensation protrusions are inserted in the grooves so that each compensation protrusion abuts against two adjacent elastic springs respectively.

[0010] In one of the embodiments, a plurality of snap-fit ​​grooves are formed on the inner wall of the first accommodating hole, and the snap-fit ​​grooves are arranged one-to-one correspondingly to the elastic spring sheets. The elastic spring sheets are snap-fitted into the snap-fit ​​grooves one-to-one, and a connecting protrusion is formed at the connection between every two adjacent snap-fit ​​grooves, and each connecting protrusion is provided with a compensation protrusion.

[0011] In one embodiment, a blocking body is provided between every two adjacent elastic spring sheets, each of the blocking bodies is provided on the base, and the blocking bodies are respectively connected to the side edges of two adjacent elastic spring sheets, and the height of the blocking body is smaller than the height of the elastic spring sheets so that the groove is formed above the blocking body.

[0012] In one embodiment, a first clamping inclined surface is formed on the side of the enclosure body facing the compensation protrusion, and a second clamping inclined surface is formed on the side of the compensation protrusion facing the enclosure body. The first clamping inclined surface and the second clamping inclined surface are arranged correspondingly so that when the compensation protrusion is inserted into the groove, the second clamping inclined surface is engaged and abutted against the first clamping inclined surface.

[0013] In one embodiment, the base, the elastic spring set and the enclosure body are an integrally formed structure.

[0014] A bidirectional elastic coaxial connector comprises a shell assembly, a radio frequency module, an insulating dielectric body and a grounding module based on a hollow annular wool button as described in any of the above embodiments, wherein the radio frequency module and the insulating dielectric body are both accommodated in the shell assembly.

[0015] In one embodiment, the shell assembly includes a limiting mounting body and an outer conductor, the limiting mounting body is clamped in the mounting cavity of the outer conductor, the limiting mounting body is formed with a step groove, and the second protrusion of the grounding protrusion ring is clamped in the step groove so that the radial elastic contact body and the hollow annular wool button are accommodated in the step groove.

[0016] In one embodiment, the RF module includes an inner conductor and two solid wool buttons, the inner conductor is clamped in the shell assembly, the solid wool button is arranged in the accommodating cavity of the inner conductor, the two solid wool buttons are respectively located at both ends of the inner conductor, and partially protrude outside the shell assembly, and the insulating medium body is clamped between the inner conductor and the outer conductor.

[0017] In one embodiment, the insulating dielectric body is a hollow multi-segment structure, and the insulating dielectric body is sleeved on the outer peripheral wall of the inner conductor.

[0018] In one of the embodiments, the number of the grounding modules based on the hollow annular wool button is two, each of which partially protrudes from the two ends of the outer conductor.

[0019] In one embodiment, the insulating dielectric body and the inner conductor are an integral injection-molded structure.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] 1) The grounding module based on the hollow annular wool button disclosed in the present invention has a grounding convex ring including a first convex platform and a second convex platform connected to each other, and the first convex platform is provided with a contact hole and a first receiving hole connected to each other, so that the first convex platform forms a contact ring surface, ensuring that the elastic grounding mode of the grounding convex ring is surface contact, and because the second convex platform is provided with a second receiving hole connected to the first receiving hole, and the aperture of the second receiving hole is larger than the aperture of the first receiving hole, the hollow annular wool button and the grounding convex ring are sequentially sleeved on the elastic spring leaf group, ensuring that each elastic spring leaf elastically abuts against the inner wall of the first receiving hole, and the bottom surface of the second receiving hole elastically abuts against the hollow annular wool button, ensuring the surface contact between the grounding convex ring and the hollow annular wool button, realizing the surface contact grounding of the grounding convex ring, and at the same time, each elastic spring leaf elastically abuts against the inner wall of the first receiving hole of the grounding convex ring, thereby improving the radial compensation of the grounding convex ring, thereby ensuring the reliability of elastic grounding.

[0022] 2) The grounding module based on the hollow annular wool button disclosed in the present invention has a groove formed between every two adjacent elastic springs, and a plurality of compensation protrusions are arranged at intervals on the inner wall of the first accommodating hole. The compensation protrusions and the grooves are arranged in a one-to-one correspondence, and the compensation protrusions are inserted into the grooves, so that each compensation protrusion is respectively abutted against two adjacent elastic springs, ensuring that the compensation protrusion connects the two adjacent elastic springs, avoiding impedance mutation caused by the groove between the elastic springs, thereby ensuring the impedance continuity of the grounding protrusion ring during the elastic grounding compression process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of a grounding module based on a hollow annular wool button according to an embodiment of the present disclosure;

[0025] Figure 2 for Figure 1 A partial enlarged view shown in the middle A;

[0026] Figure 3 for Figure 1 The schematic diagram of the structure of the grounding convex ring in the grounding module based on the hollow annular wool button is shown;

[0027] Figure 4 for Figure 1 The schematic diagram of the structure of the radial elastic contact body in the grounding module based on the hollow annular wool button is shown;

[0028] Figure 5 is a cross-sectional view of a bidirectional elastic coaxial connector according to an embodiment of the present disclosure;

[0029] Figure 6 for Figure 5 A cross-sectional view of a housing assembly in a bidirectional elastic coaxial connector is shown;

[0030] Figure 7 is a cross-sectional view of an insulating dielectric body and an inner conductor according to an embodiment;

[0031] Figure 8 for Figure 7 A schematic diagram of the top view of the insulating dielectric body and the inner conductor shown;

[0032] Fig. 9 A flowchart of the steps of a method for integrally injecting an insulating dielectric body and an inner conductor;

[0033] Fig.10 The figure is a schematic diagram of the cross-sectional structure of two adjacent elastic springs and a compensation protrusion according to an embodiment.

[0034] Figure numerals: 10, grounding module based on hollow annular wool button; 100, hollow annular wool button; 200, grounding convex ring; 210, first convex platform; 211, contact hole; 212, first receiving hole; 212a, snap-fit ​​groove; 212b, connecting convex part; 213, contact annular surface; 220, second convex platform; 221, second receiving hole; 230, compensation convex piece; 231, second snap-fit ​​inclined surface; 232, sliding convex block; 300, radial elastic contact body; 310, base; 320, elastic spring leaf; 321, groove; 322, positioning sliding groove; 323, movable groove; 330, surrounding Block body; 331, first clamping inclined surface; 1, bidirectional elastic coaxial connector; 20, shell assembly; 2100, limit mounting body; 2110, step groove; 2200, outer conductor; 2210, mounting cavity; 2211, first ground mounting groove; 2212, middle mounting groove; 2213, second ground mounting groove; 2300, mounting abutment block; 30, RF module; 3100, inner conductor; 3100a, receiving cavity; 3200, solid wool button; 40, insulating dielectric body; 4100, hollow dielectric body; 4200, insulating fan; 4210, recessed groove; 4220, heat dissipation space. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] The present invention provides a grounding module based on a hollow annular wool button, which is used to partially protrude from the shell component of a bidirectional elastic coaxial connector. The grounding module based on the hollow annular wool button includes a hollow annular wool button, a grounding convex ring and a radial elastic contact body, wherein the grounding convex ring is a double-step structure, the grounding convex ring includes a first convex platform and a second convex platform connected to each other, the first convex platform partially protrudes from the shell component, the first convex platform is provided with a connected contact hole and a first receiving hole, so that the first convex platform forms a contact annular surface, the contact annular surface is used for elastic grounding, the second convex platform is provided with a second receiving hole connected to the first receiving hole, and the aperture of the second receiving hole is larger than that of the first receiving hole The aperture of the nanohole, the central axis of the first accommodating hole coincides with the central axis of the second accommodating hole, the radial elastic contact body includes a base and an elastic spring group, the elastic spring group includes a plurality of elastic springs arranged around the middle of the base, and a groove is formed between every two adjacent elastic springs, the hollow annular wool button and the grounding convex ring are sequentially sleeved on the elastic spring group, so that each elastic spring elastically abuts against the inner wall of the first accommodating hole, and the bottom surface of the second accommodating hole elastically abuts against the hollow annular wool button, and a plurality of compensation convex sheets are arranged on the inner wall of the first accommodating hole at intervals, the compensation convex sheets and the grooves are arranged one by one, and the compensation convex sheets are inserted in the grooves, so that each compensation convex sheet abuts against two adjacent elastic spring sheets respectively.

[0039] The above-mentioned grounding module based on the hollow annular wool button, since the grounding convex ring includes a first convex platform and a second convex platform connected to each other, the first convex platform is provided with a contact hole and a first receiving hole that are connected to each other, so that the first convex platform forms a contact ring surface, ensuring that the elastic grounding method of the grounding convex ring is surface contact, and since the second convex platform is provided with a second receiving hole connected to the first receiving hole, and the aperture of the second receiving hole is larger than the aperture of the first receiving hole, the hollow annular wool button and the grounding convex ring are sequentially sleeved on the elastic spring leaf group, ensuring that each elastic spring leaf elastically abuts against the inner wall of the first receiving hole, and the bottom surface of the second receiving hole elastically abuts against the hollow annular wool button, ensuring that the grounding convex ring and the hollow ring The surface contact of the shaped hair button realizes the surface contact grounding of the grounding protrusion ring. At the same time, each elastic spring piece elastically abuts against the inner wall of the first accommodating hole of the grounding protrusion ring, which improves the radial compensation of the grounding protrusion ring, thereby ensuring the reliability of elastic grounding. Since a groove is formed between every two adjacent elastic spring pieces, a plurality of compensation protrusions are arranged on the inner wall of the first accommodating hole at intervals. The compensation protrusions and the grooves are arranged one by one, and the compensation protrusions are inserted in the grooves, so that each compensation protrusion abuts against two adjacent elastic spring pieces respectively, ensuring that the compensation protrusion connects the two adjacent elastic spring pieces, avoiding impedance mutation caused by the groove between the elastic spring pieces, thereby ensuring the impedance continuity of the grounding protrusion ring during the elastic grounding compression process.

[0040] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0041] Please also read Figures 1 to 6 In one embodiment, a grounding module 10 based on a hollow annular fur button is used to partially protrude from a housing component 20 of a bidirectional elastic coaxial connector 1. The grounding module 10 based on a hollow annular fur button comprises a hollow annular fur button 100, a grounding convex ring 200 and a radial elastic contact body 300, wherein the grounding convex ring 200 is a double-step structure, and the grounding convex ring 200 comprises a first convex platform 210 and a second convex platform 220 connected to each other, wherein the first convex platform 210 partially protrudes from the housing component 2 In addition, the first convex platform 210 is provided with a contact hole 211 and a first receiving hole 212 which are connected to each other, so that the first convex platform 210 forms a contact annular surface 213, and the contact annular surface 213 is used for elastic grounding. The second convex platform 220 is provided with a second receiving hole 221 which is connected to the first receiving hole 212, and the aperture of the second receiving hole 221 is larger than the aperture of the first receiving hole 212, and the central axis of the first receiving hole 212 coincides with the central axis of the second receiving hole 221.

[0042] Furthermore, if Figure 1 and Figure 4 As shown, the radial elastic contact body 300 includes a base 310 and an elastic spring group, the elastic spring group includes a plurality of elastic springs 320 arranged around the middle of the base 310, and a groove 321 is formed between every two adjacent elastic springs 320, the hollow annular wool button 100 and the grounding protrusion 200 are sequentially sleeved on the elastic spring group so that each elastic spring 320 elastically abuts against the inner wall of the first accommodating hole 212, and the bottom surface of the second accommodating hole 221 elastically abuts against the hollow annular wool button 100, and the inner wall of the first accommodating hole 212 is provided with a plurality of compensation protrusions 230 at intervals, the compensation protrusions 230 and the grooves 321 are arranged one by one, and the compensation protrusions 230 are inserted into the grooves 321 so that each compensation protrusion 230 abuts against two adjacent elastic springs 320 respectively.

[0043] It can be understood that since part of the grounding module 10 based on the hollow annular wool button protrudes out of the shell assembly 20 of the bidirectional elastic coaxial connector 1, the grounding protrusion ring 200 of the grounding module protrudes out of the shell assembly 20, ensuring that the grounding protrusion ring 200 can be abutted against the ground, that is, part of the first protrusion platform 210 of the grounding protrusion ring 200 protrudes out of the shell assembly 20, so that the contact ring surface 213 formed by the first protrusion platform 210 is used for elastic abutment grounding, thereby realizing the surface contact between the contact ring surface 213 and the grounding pad of the circuit board, and the grounding protrusion ring 200 is not easy to deform, thereby improving the stability of the grounding connection.

[0044] It can also be understood that since the grounding protrusion 200 includes a first protrusion platform 210 and a second protrusion platform 220 connected to each other, the first protrusion platform 210 is provided with a contact hole 211 and a first receiving hole 212 connected to each other, so that the first protrusion platform 210 is formed with a contact annular surface 213, and the first protrusion platform 210 partially protrudes outside the housing assembly 20, it is ensured that the elastic grounding mode of the grounding protrusion 200 is surface contact, and since the second protrusion platform 220 is provided with a second receiving hole 221 connected to the first receiving hole 212, and the aperture of the second receiving hole 221 is larger than the aperture of the first receiving hole 212, the center axis of the first receiving hole 212 The center line coincides with the center line of the second receiving hole 221, so that the hollow annular wool button 100 and the grounding convex ring 200 are sequentially sleeved on the elastic spring sheet group, ensuring that each elastic spring sheet 320 elastically abuts against the inner wall of the first receiving hole 212 in the radial direction, and the bottom surface of the second receiving hole 221 elastically abuts against the hollow annular wool button 100, that is, the second receiving hole 221 is sleeved on the outer peripheral wall of the hollow annular wool button 100, so that the upper surface of the hollow annular wool button 100 elastically abuts against the bottom surface of the second receiving hole 221, and the hollow annular wool button 100 itself has elasticity, that is, the hollow annular wool button 100 and the grounding convex ring 200 realize elasticity. Abutment ensures that the hollow annular wool button 100 provides axial elastic support for the grounding convex ring 200, ensures that the grounding convex ring 200 is in surface contact with the hollow annular wool button 100, and realizes surface contact and grounding of the grounding convex ring 200 with the hollow annular wool button 100 and the grounding pad of the circuit board respectively, wherein the hollow annular wool button 100 provides axial compensation and axial support for the grounding convex ring 200, ensuring the reliability of the grounding connection, and at the same time, each elastic spring sheet 320 elastically abuts against the inner wall of the first accommodating hole 212 of the grounding convex ring 200, thereby improving the radial compensation of the grounding convex ring 200, thereby ensuring the reliability of the grounding connection, and because A groove 321 is formed between every two adjacent elastic spring pieces 320, and a plurality of compensation convex pieces 230 are arranged at intervals on the inner wall of the first accommodating hole 212. The compensation convex pieces 230 are arranged in a one-to-one correspondence with the grooves 321, and the compensation convex pieces 230 are inserted into the grooves 321, so that each compensation convex piece 230 abuts against two adjacent elastic spring pieces 320, ensuring that the compensation convex piece 230 is connected to the two adjacent elastic spring pieces 320, avoiding impedance mutation caused by the grooves 321 between the elastic spring pieces 320, thereby ensuring the impedance continuity of the grounding convex ring 200 during the elastic grounding compression process, and further ensuring the reliable transmission of high-frequency radio frequency signals.

[0045] like Figure 1 As shown, in one embodiment, the hollow annular wool button 100 is a hollow cylindrical structure with an outer diameter of 1mm-2mm and a height of 1mm-2mm, so that the connector is lightweight as a whole.

[0046] like Figure 1 and Figure 2As shown, in one embodiment, the inner wall of the first accommodating hole 212 is formed with a plurality of snap-fit ​​grooves 212a, and the snap-fit ​​grooves 212a are arranged one-to-one correspondingly with the elastic spring sheets 320, and the elastic spring sheets 320 are snap-fitted into the snap-fit ​​grooves 212a one-to-one, and a connecting protrusion 212b is formed at the connection between every two adjacent snap-fit ​​grooves 212a, and each connecting protrusion 212b is provided with a compensation protrusion 230. In the present embodiment, since a plurality of snap-fit ​​grooves 212a are formed on the inner wall of the first accommodating hole 212, the elastic spring pieces 320 are snap-fitted into the snap-fit ​​grooves 212a one by one, thereby preventing the elastic spring pieces 320 from rotating after installation and providing installation stability. Moreover, the elastic spring pieces 320 are elastically abutted against the inner wall of the snap-fit ​​grooves 212a one by one. Since the elastic spring pieces 320 themselves are elastic, the elastic spring pieces 320 are guaranteed to provide sufficient radial compensation and radial support for the grounding connection, thereby ensuring the stability and reliability of the grounding. However, when the elastic spring pieces 320 are used, a groove 321 is formed between two adjacent elastic spring pieces 320, thereby causing a significant impact on the impedance matching and impedance continuity of the connector. The additional compensation protrusion 230 matches the groove 321 to compensate for the transmission defect of the groove 321 and ensure the stability of the high-frequency signal transmission of the connector.

[0047] like Figure 1 and Figure 4 As shown, in one embodiment, a blocking body 330 is provided between every two adjacent elastic spring sheets 320, each of the blocking bodies 330 is provided on the base 310, and the blocking bodies 330 are respectively connected to the side edges of two adjacent elastic spring sheets 320, and the height of the blocking body 330 is smaller than the height of the elastic spring sheets 320, so that the groove 321 is formed above the blocking body 330. In this embodiment, since each enclosure body 330 is disposed on the base 310, specifically, each enclosure body 330 is fixedly connected to the base 310, and the enclosure body 330 is respectively connected to two adjacent elastic springs 320, the enclosure body 330 enhances the stability of the overall structure of the elastic spring group, and since the height of the enclosure body 330 is less than the height of the elastic spring 320, the groove 321 is formed above the enclosure body 330, ensuring that the groove 321 provides a suitable space for the insertion of the compensation protrusion 230, and at the same time ensures that the compensation protrusion 230 and the enclosure body 330 are in contact with each other, ensuring the impedance continuity of the connector, thereby achieving reliable grounding.

[0048] Furthermore, if Figures 2 to 4As shown, in one embodiment, the enclosure body 330 is formed with a first clamping inclined surface 331 on one side facing the compensation lug 230, and the compensation lug 230 is formed with a second clamping inclined surface 231 on one side facing the enclosure body 330, and the first clamping inclined surface 331 and the second clamping inclined surface 231 are arranged correspondingly, so that when the compensation lug 230 is inserted into the groove 321, the second clamping inclined surface 231 is clamped and abutted against the first clamping inclined surface 331. In this embodiment, since the enclosure body 330 is formed with the first clamping inclined surface 331 and the compensation lug 230 is formed with the second clamping inclined surface 231, when the compensation lug 230 is inserted into the groove 321, the first clamping inclined surface 331 and the second clamping inclined surface 231 are mutually clamped and connected, ensuring that the enclosure body 330 and the compensation lug 230 form a connected whole, thereby improving the reliability of the grounding transmission process.

[0049] Furthermore, if Figure 3 , Figure 4 and Fig.10 As shown, in one embodiment, the side end of the elastic spring 320 is provided with a connected positioning sliding groove 322 and a movable groove 323, wherein the lateral depth of the positioning sliding groove 322 is smaller than the lateral depth of the movable groove 323, and the compensation protrusion 230 is provided with a sliding protrusion 232 on the side facing the positioning sliding groove 322, and the sliding protrusion 232 is arranged corresponding to the positioning sliding groove 322. When the compensation protrusion 230 is inserted into the groove 321, the sliding protrusion 232 slides in the positioning sliding groove 322, wherein the thickness of the sliding protrusion 232 is smaller than the longitudinal depth of the movable groove 323. In this embodiment, a sliding protrusion 232 is provided on both sides of the compensation protrusion 230. When the compensation protrusion 230 is inserted into the groove 321, the sliding protrusions 232 on the two sides of the compensation protrusion 230 slide in the positioning sliding grooves 322 of the two adjacent elastic springs respectively. In the process of inserting the compensation protrusion 230 into the groove 321, the two adjacent elastic springs are gradually elastically stretched apart. When the sliding protrusion 232 completely slides into the movable groove 323, the two adjacent elastic springs 320 are restored to their positions and fit with the compensation protrusion 230 respectively. The button 100 itself is elastic, so that the grounding protrusion 200 floats up and down when it is grounded. Therefore, the thickness of the sliding protrusion 232 is less than the longitudinal depth of the movable groove 323, ensuring that the sliding protrusion 232 is engaged in the movable groove 323. On the one hand, it prevents the grounding protrusion 200 from detaching from the radial elastic contact body 300, and ensures the reliability of the installation of the grounding protrusion 200 and the radial elastic contact body 300 during the up and down floating process of the grounding protrusion 200. On the other hand, the positioning sliding groove 322 can ensure that the grounding protrusion 200 is quickly positioned and installed, thereby improving the efficiency of assembly.

[0050] Furthermore, if Figure 3 and Figure 4As shown, in one embodiment, the base 310, the elastic spring group and the enclosure body 330 are an integrally formed structure to avoid loosening of the connection parts during use, ensure that the base 310 and the enclosure body 330 provide support and fixation for the elastic spring group, ensure that the elastic spring group provides radial elastic support for the grounding convex ring 200, and ensure the reliability of the overall structure of the grounding module.

[0051] like Figure 1 , Figure 5 and Figure 6 As shown, the present disclosure also provides a bidirectional elastic coaxial connector 1, including a shell assembly 20, a radio frequency module 30, an insulating dielectric body 40 and a grounding module 10 based on a hollow ring-shaped wool button as described in any of the above embodiments, wherein the radio frequency module 30 and the insulating dielectric body 40 are both accommodated in the shell assembly 20, wherein the outer conductor 2200 is formed with an installation cavity 2210, so that the radio frequency module 30 and the insulating dielectric body 40 are both accommodated in the installation cavity 2210, and the insulating dielectric body 40 is clamped between the outer conductor 2200 and the radio frequency module 30, to ensure that the radio frequency module 30 is insulated and separated from the outer conductor 2200, thereby ensuring the reliability of radio frequency signal transmission.

[0052] like Figure 1 , Figure 5 and Figure 6 As shown, in one embodiment, the housing assembly 20 includes a position-limiting mounting body 2100 and an outer conductor 2200, and the position-limiting mounting body 2100 is clamped in the mounting cavity 2210 of the outer conductor 2200. Since the position-limiting mounting body 2100 is clamped in the mounting cavity 2210 of the outer conductor 2200, the mounting cavity 2210 is ensured to provide a holding space for the position-limiting mounting body 2100, thereby preventing the position-limiting mounting body 2100 from moving in the outer conductor 2200. Further, the position-limiting mounting body 2100 is formed with a stepped groove 2110, and the second convex platform 220 of the grounding convex ring 200 is clamped in the stepped groove 2110, so that the radial elastic contact body 300 and the hollow annular wool button 100 are accommodated in the stepped groove 2110. In this embodiment, the formed step groove 2110 allows the second protrusion 220 to be clamped in the step groove 2110, ensuring that the first protrusion 210 partially protrudes out of the step groove 2110, ensuring that elastic travel space is provided for the grounding protrusion ring 200, while preventing the grounding protrusion ring 200 from detaching from the step groove 2110.

[0053] Furthermore, if Figure 5 and Figure 6As shown, in one embodiment, two mounting abutment blocks 2300 are arranged in the mounting cavity 2210 of the outer conductor 2200, and the two mounting abutment blocks 2300 are relatively arranged in the mounting cavity 2210, and the mounting abutment blocks 2300 are T-shaped step structures, and the cross section of the mounting abutment blocks 2300 is T-shaped. The two additional mounting abutment blocks 2300 enable the mounting cavity 2210 to sequentially form a first grounding mounting groove 2211, an intermediate mounting groove 2212, and a second grounding mounting groove 2213 that are connected to each other, and the first grounding mounting groove 2211 and the second grounding mounting groove 2213 are both embedded with a limit mounting groove. The body 2100 has an L-shaped cross section, so that the limiting mounting body 2100 and the two mounting abutment blocks 2300 form a limiting clamping area (not shown in the figure), and the radial elastic contact body 300, the hollow annular wool button 100 and the grounding protruding ring 200 are sequentially installed and clamped in the limiting clamping area, thereby ensuring the firmness of the installation position of the grounding module, and the RF module 30 is fixedly installed between the two mounting abutment blocks 2300, so that the inner conductor 3100 of the RF module 30 passes through the first grounding mounting groove 2211, the middle mounting groove 2212 and the second grounding mounting groove 2213 in sequence. In this embodiment, since the mounting abutment block 2300 is a T-shaped step structure and the cross-section of the limiting mounting body 2100 is L-shaped, the outer conductor 2200 and the limiting mounting body 2100 form a stable installation space, ensuring the reliability of the installation of the radial elastic contact body 300, the hollow annular wool button 100 and the grounding convex ring 200, the outer conductor 2200 and the insulating medium body 40, avoiding the problem of position displacement due to vibration during use, thereby avoiding affecting the signal transmission performance of the connector.

[0054] like Figure 6 As shown, in one embodiment, the outer conductor 2200 and the two mounting abutment blocks 2300 are an integrally formed structure.

[0055] like Figures 5 to 7As shown, in one embodiment, the RF module 30 includes an inner conductor 3100 and two solid wool buttons 3200, the inner conductor 3100 is clamped in the shell assembly 20, the solid wool button 3200 is arranged in the accommodating cavity 3100a of the inner conductor 3100, the two solid wool buttons 3200 are respectively located at both ends of the inner conductor 3100, and partially protrude from the shell assembly 20, and the insulating medium body 40 is clamped between the inner conductor 3100 and the outer conductor 2200. In the present embodiment, a receiving cavity 3100a is formed at both ends of the inner conductor 3100, and a solid wool button 3200 is placed in each receiving cavity 3100a. Specifically, the solid wool button 3200 and the receiving cavity 3100a are interference fit, ensuring that the solid wool button 3200 is fixedly installed in the receiving cavity 3100a, and a portion of each solid wool button 3200 protrudes outside the shell assembly 20 to achieve solderless interconnection between the boards. Since the insulating dielectric body 40 is clamped between the inner conductor 3100 and the shell assembly 20, it is ensured that the insulating dielectric body 40 is arranged between the outer conductor 2200 and the inner conductor 3100 to achieve insulation between the outer conductor 2200 and the inner conductor 3100.

[0056] like Figure 7 and Figure 8 As shown, in one embodiment, the insulating dielectric body 40 is a hollow multi-segment structure, and the insulating dielectric body 40 is sleeved on the outer peripheral wall of the inner conductor 3100. In this embodiment, since the insulating dielectric body 40 is a hollow multi-segment structure, it is avoided to use a whole piece of insulating dielectric body 40 for insulation installation, which effectively reduces the mixed dielectric constant of the connector and reduces the volume of the connector.

[0057] Since heat is generated inside the connector during high-frequency signal transmission, the heat will accumulate between the inner conductor 3100 and the outer conductor 2200, and conventionally, an insulating dielectric block is generally used to directly abut the gap between the outer conductor 2200 and the inner conductor 3100, leaving no space for heat to dissipate, which can easily lead to a decrease in the signal transmission performance of the connector, thereby affecting the signal transmission effect of the connector.

[0058] Therefore, further, Figure 7 and Figure 8As shown, in one embodiment, the insulating dielectric body 40 includes a hollow dielectric body 4100 and a plurality of insulating segments 4200. The hollow dielectric body is sleeved on the outer peripheral wall of the inner conductor 3100. The length direction of each insulating segment 4200 is consistent with the length direction of the hollow dielectric body 4100. The plurality of insulating segments 4200 are arranged around the outer peripheral wall of the hollow dielectric body 4100, and the interval between each two adjacent insulating segments 4200 is equal. The side ends of each insulating segment 4200 are used to abut against the outer conductor 2200. In this embodiment, since the interval between each two adjacent insulating segments 4200 is equal, a heat dissipation space 4220 is formed between each two adjacent insulating segments 4200. The heat dissipation space 4220 can disperse the heat generated between the inner conductor 3100 and the outer conductor 2200 in time to avoid heat accumulation. Specifically, in one embodiment, the number of insulating segments 4200 is three.

[0059] Furthermore, if Figure 7 and Figure 8 As shown, in one embodiment, both ends of each insulating fan 4200 are provided with a recessed groove 4210. The added recessed groove 4210, on the one hand, reduces the volume of the insulating medium and reduces the overall volume of the connector while ensuring the insulation effect. On the other hand, it reduces the mixed dielectric constant of the connector, thereby improving the signal transmission performance of the connector.

[0060] like Figure 1 and Figure 5 As shown, in one embodiment, the number of the grounding modules 10 based on the hollow ring-shaped wool button is two, which partially protrude from the two ends of the outer conductor 2200, respectively, to ensure that both ends of the connector are stably grounded, thereby improving the reliability of high-frequency signal transmission of interconnection between boards.

[0061] like Figure 7 and Figure 8 As shown, in one embodiment, the insulating dielectric body 40 and the inner conductor 3100 are an integral injection-molded structure, ensuring that the insulating dielectric body 40 is evenly wrapped around the inner conductor 3100 to provide a stable and reliable insulation effect.

[0062] As the size of connectors becomes smaller and smaller, reaching the millimeter level, the assembly requirements for internal parts are getting higher and higher, and it is easy to have problems with the assembly of different parts. Therefore, it is necessary to reduce the number of assembly parts and reduce the cumulative deviation of product assembly.

[0063] Therefore, the required different parts are processed into an integrated structure during part processing through the injection molding process to form a composite part, such as Figures 7 to 9 As shown, in one embodiment, the integral injection molding method of the insulating dielectric body 40 and the inner conductor 3100 includes the following steps:

[0064] S101 , taking out the formed inner conductor 3100 ; it can be understood that, since the inner conductor 3100 is made of metal, the inner conductor 3100 needs to be formed first to ensure the subsequent combination with the insulating dielectric body 40 .

[0065] S103, placing the inner conductor 3100 into the cavity of the injection mold; it is understandable that the inner conductor 3100 needs to be fixedly placed in the cavity of the injection mold to avoid position deviation of the inner conductor 3100.

[0066] S105, heating and melting the insulating plastic; it can be understood that since the insulating plastic is heated and melted, the insulating plastic has fluidity.

[0067] S107, press the insulating plastic into the mold cavity so that the insulating plastic is combined with the outer peripheral wall of the inner conductor 3100; it can be understood that the insulating plastic flows into the mold cavity, and the insulating plastic flows into the mold cavity through the injection channel and is in close contact with the outer peripheral wall of the inner conductor 3100.

[0068] S109. After the insulating plastic is cooled and solidified, the insulating plastic forms an insulating dielectric body 40, and finally forms an injection molded component. It can be understood that the insulating dielectric body 40 and the inner conductor 3100 are combined into one, which improves the connection strength between the insulating dielectric body 40 and the inner conductor 3100 and reduces the number of assembly parts, thereby reducing the cumulative deviation of product assembly.

[0069] It should be noted that the injection molded component is an integral injection molded structure of the insulating dielectric body 40 and the inner conductor 3100 .

[0070] Compared with the prior art, the present invention has at least the following advantages:

[0071] 1) The grounding module 10 based on the hollow annular wool button disclosed in the present invention comprises a grounding convex ring 200 including a first convex platform 210 and a second convex platform 220 connected to each other, and the first convex platform 210 is provided with a contact hole 211 and a first receiving hole 212 connected to each other, so that the first convex platform 210 is formed with a contact annular surface 213, ensuring that the elastic grounding mode of the grounding convex ring 200 is surface contact, and the second convex platform 220 is provided with a second receiving hole 221 connected to the first receiving hole 212, and the aperture of the second receiving hole 221 is larger than the aperture of the first receiving hole 212, so that The hollow annular wool button 100 and the grounding protruding ring 200 are sequentially sleeved on the elastic spring sheet group, ensuring that each elastic spring sheet 320 elastically abuts against the inner wall of the first accommodating hole 212, and the bottom surface of the second accommodating hole 221 elastically abuts against the hollow annular wool button 100, ensuring the surface contact between the grounding protruding ring 200 and the hollow annular wool button 100, and realizing the surface contact grounding of the grounding protruding ring 200. At the same time, each elastic spring sheet 320 elastically abuts against the inner wall of the first accommodating hole 212 of the grounding protruding ring 200, thereby improving the radial compensation of the grounding protruding ring 200, thereby ensuring the reliability of elastic grounding.

[0072] 2) The grounding module 10 based on the hollow annular wool button disclosed in the present invention has a groove 321 formed between every two adjacent elastic springs 320, and a plurality of compensation protrusions 230 are arranged at intervals on the inner wall of the first accommodating hole 212. The compensation protrusions 230 are arranged in a one-to-one correspondence with the grooves 321, and the compensation protrusions 230 are inserted into the grooves 321, so that each compensation protrusion 230 is respectively abutted against two adjacent elastic springs 320, ensuring that the compensation protrusion 230 connects the two adjacent elastic springs 320, avoiding impedance mutation caused by the groove 321 between the elastic springs 320, thereby ensuring the impedance continuity of the grounding protrusion ring 200 during the elastic grounding compression process.

[0073] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the attached claims.

Claims

1. A grounding module based on a hollow annular wool button, used to partially protrude from the housing assembly of a bidirectional elastic coaxial connector, characterized in that: The grounding module based on the hollow annular wool button comprises: Hollow ring fur buttons; A grounding convex ring, the grounding convex ring is a double-step structure, the grounding convex ring includes a first convex platform and a second convex platform connected to each other, the first convex platform partially protrudes outside the shell assembly, the first convex platform is provided with a contact hole and a first receiving hole connected to each other, so that the first convex platform forms a contact annular surface, the contact annular surface is used for elastic grounding, the second convex platform is provided with a second receiving hole connected to the first receiving hole, the aperture of the second receiving hole is larger than the aperture of the first receiving hole, and the central axis of the first receiving hole coincides with the central axis of the second receiving hole; A radial elastic contact body, the radial elastic contact body includes a base and an elastic spring group, the elastic spring group includes a plurality of elastic springs arranged around the middle of the base, and a groove is formed between every two adjacent elastic springs, the hollow annular wool button and the grounding convex ring are sequentially sleeved on the elastic spring group so that each elastic spring elastically abuts against the inner wall of the first accommodating hole, and the bottom surface of the second accommodating hole elastically abuts against the hollow annular wool button, and the inner wall of the first accommodating hole is provided with a plurality of compensation protrusions at intervals, the compensation protrusions are arranged one-to-one corresponding to the grooves, and the compensation protrusions are inserted in the grooves so that each compensation protrusion abuts against two adjacent elastic springs respectively.

2. The grounding module based on the hollow annular wool button according to claim 1, characterized in that: The inner wall of the first accommodating hole is formed with a plurality of snap-fit ​​grooves, and the snap-fit ​​grooves are arranged one-to-one correspondingly to the elastic spring sheets. The elastic spring sheets are snap-fitted into the snap-fit ​​grooves one-to-one, and a connecting protrusion is formed at the connection of every two adjacent snap-fit ​​grooves, and each connecting protrusion is provided with a compensation protrusion.

3. The grounding module based on the hollow annular wool button according to claim 2, characterized in that: A blocking body is arranged between every two adjacent elastic spring sheets, each of the blocking bodies is arranged on the base, and the blocking bodies are respectively connected to the side edges of two adjacent elastic spring sheets, and the height of the blocking body is smaller than the height of the elastic spring sheets so that the groove is formed above the blocking body.

4. The grounding module based on the hollow annular wool button according to claim 3, characterized in that: A first clamping inclined surface is formed on the side of the enclosure body facing the compensation protrusion, and a second clamping inclined surface is formed on the side of the compensation protrusion facing the enclosure body. The first clamping inclined surface and the second clamping inclined surface are arranged correspondingly so that when the compensation protrusion is inserted into the groove, the second clamping inclined surface is engaged and abutted against the first clamping inclined surface.

5. The grounding module based on the hollow annular wool button according to claim 4, characterized in that: The base, the elastic spring group and the enclosure body are an integrally formed structure.

6. A bidirectional elastic coaxial connector, characterized in that: It comprises a shell component, a radio frequency module, an insulating dielectric body and a grounding module based on a hollow annular wool button as described in any one of claims 1 to 5, wherein the radio frequency module and the insulating dielectric body are both accommodated in the shell component.

7. The bidirectional elastic coaxial connector according to claim 6, characterized in that: The shell assembly includes a limiting mounting body and an outer conductor. The limiting mounting body is clamped in the mounting cavity of the outer conductor. The limiting mounting body is formed with a stepped groove. The second convex platform of the grounding convex ring is clamped in the stepped groove so that the radial elastic contact body and the hollow annular wool button are accommodated in the stepped groove.

8. The bidirectional elastic coaxial connector according to claim 7, characterized in that: The radio frequency module includes an inner conductor and two solid wool buttons. The inner conductor is clamped in the shell assembly, and the solid wool button is arranged in the accommodating cavity of the inner conductor. The two solid wool buttons are respectively located at two ends of the inner conductor and partially protrude outside the shell assembly. The insulating medium body is clamped between the inner conductor and the outer conductor.

9. The bidirectional elastic coaxial connector according to claim 8, characterized in that: The insulating dielectric body is a hollow multi-segment structure, and the insulating dielectric body is sleeved on the outer peripheral wall of the inner conductor.

10. The bidirectional elastic coaxial connector according to claim 9, characterized in that: The number of the grounding modules based on the hollow annular wool button is two, and each of them partially protrudes from the two ends of the outer conductor; and / or the insulating dielectric body and the inner conductor are an integral injection molding structure.

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