Dual floating RF coaxial connectors and adapter interconnects

Abstract

The present invention provides a dual-floating radio frequency coaxial connector and a transfer interconnection device; the dual-floating radio frequency coaxial connector includes a first outer conductor, a clamping ring, a first insulating member, a first inner conductor, a first solid wool button, a second outer conductor, a third outer conductor and an inner conductor assembly; the first outer conductor is provided with a first sliding hole, the inner wall of the first sliding hole forms a limited sliding cavity, and the first sliding hole is connected to the limited sliding cavity; the second outer conductor is located in the first sliding hole and elastically slidably connected to the first outer conductor, the outer peripheral wall of the second outer conductor is formed with a limiting groove connected to the limiting sliding cavity, the end of the second outer conductor located in the first sliding hole is a first spring structure, the second outer conductor is formed with a first plug hole, and the first spring structure forms a first plug interface connected to the first plug hole; the dual-floating radio frequency coaxial connector has good floating performance as a whole, and can be used in an environment where board interconnection and axial tolerance are large.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical contact connection, and in particular to a dual-floating radio frequency coaxial connector and a switching interconnection device. Background Art

[0002] As weapons and equipment develop towards higher frequencies, higher densities, and higher integration, simple elastic interconnection methods can no longer fully meet the demanding performance requirements of weapons and equipment. To ensure the effective transmission of multi-channel signals, not only a large tolerance but also reliable contact is required.

[0003] For traditional connectors, in order to make the connector have a larger float and be able to achieve solderless interconnection, the Chinese patent with patent number 202110274621.9 discloses a double-floating wool button coaxial sealed connector, which includes an outer contact, a center contact, a glass insulator, an engineering plastic insulating part, a protective cap, a solid wool button, a clamping ring and a hollow wool button. One end of the solid wool button touches the tail stage of the center contact, and the other end touches the step of the protective cap. The solid wool button is coaxially inserted into the contact cap step hole of the engineering plastic insulating part, and the two end faces of the hollow wool button touch the outer contact and the clamping ring respectively.

[0004] However, the aforementioned connector has a stepped protective cap, which is positioned at the bottom of the contact cap step hole in the engineering plastic insulator and slidably connected to the contact cap step hole. A solid button is coaxially inserted into the contact cap step hole in the engineering plastic insulator, with one end of the button contacting the tail end of the center contact and the other end contacting the step of the protective cap. Furthermore, the engineering plastic insulator is positioned within the third step hole in the outer contact and contacts the inner wall of the third step hole. These limitations of the contact cap step hole and the third step hole make the connector unsuitable for use in inter-board interconnection environments with large axial tolerances. Furthermore, when the overall float of the connector is large, especially during compression of the elastic portion, the connector's impedance changes significantly, making it impossible to transmit high-frequency signals. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a dual-floating RF coaxial connector and a transfer interconnection device that are suitable for inter-board interconnection and use in environments with large axial tolerance and constant impedance.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] A dual-floating RF coaxial connector includes a first outer conductor, a collar, a first insulating member, a first inner conductor, and a first solid wool button. The first outer conductor is provided with a first sliding hole, the inner wall of the first sliding hole forming a limited sliding cavity, and the first sliding hole is connected to the limited sliding cavity. The dual-floating RF coaxial connector also includes:

[0008] The second outer conductor is located in the first sliding hole and is elastically slidably connected to the first outer conductor. The outer peripheral wall of the second outer conductor is formed with a limiting groove connected to the limiting sliding cavity. The end of the second outer conductor located in the first sliding hole is a first spring structure. The second outer conductor is formed with a first plug hole. The first spring structure is formed with a first plug interface connected to the first plug hole. The clamping ring is protruded in the limiting groove, and the outer peripheral wall of the clamping ring is located in the limiting sliding cavity.

[0009] A third outer conductor is provided with a mounting inner hole, one end of the third outer conductor is located in the first insertion hole and is elastically slidably connected to the second outer conductor; the first insulating member is located in the mounting inner hole and is interference-connected to the third outer conductor, the first insulating member is respectively sleeved on the first inner conductor and the first solid wool button, one end of the first solid wool button abuts against the end of the first inner conductor, and the other end of the first solid wool button protrudes from the first insulating member;

[0010] The inner conductor assembly is located in the first plug-in hole and is insulated and fixedly connected to the second outer conductor. The end of the inner conductor assembly adjacent to the first inner conductor is a second reed structure. A contraction opening is formed at the end of the inner conductor assembly. The first inner conductor is located in the contraction opening and is interference-connected with the inner conductor assembly. The end of the inner conductor assembly away from the first inner conductor is a conductive elastic portion, and the conductive elastic portion protrudes from the end side of the second outer conductor.

[0011] In one embodiment, the dual-floating RF coaxial connector further includes a first hollow wool button, which is sleeved on the first insulating member, and the third outer conductor is provided with a first limiting groove connected to the mounting inner hole, and the first hollow wool button is located in the first limiting groove and elastically abuts against the third outer conductor.

[0012] In one embodiment, the first insulating member is formed with a first interference hole; the outer peripheral wall of the first inner conductor is provided with a first barb portion, and the first barb portion is located in the first interference hole; the first solid wool button is located in the first interference hole and is connected to the first insulating member.

[0013] In one embodiment, the dual-floating RF coaxial connector further includes a second insulating member, the outer peripheral wall of the inner conductor assembly is provided with a second barb portion, the second insulating member is sleeved on the inner conductor assembly, and the second barb portion is located in the second interference hole.

[0014] In one embodiment, the inner conductor assembly includes a second inner conductor and a second solid wool button, and the constriction is formed in the second inner conductor;

[0015] The second insulating member is located in the first plug-in hole and fixedly connected to the second outer conductor, the second barb portion is protruded from the outer peripheral wall of the second inner conductor, the second insulating member is sleeved on the second inner conductor, and the second barb portion is located in the second interference hole; the second inner conductor is located in the second interference hole and connected to the second insulating member, one end of the second solid wool button is in contact with the end of the second inner conductor, and the other end of the second solid wool button protrudes from the second insulating member, and the conductive elastic portion is provided on the second solid wool button.

[0016] In one embodiment, the dual-floating RF coaxial connector also includes a second hollow wool button, which is sleeved on the second insulating member. The second outer conductor is provided with a second limiting groove connected to the first plug hole, and the second hollow wool button is located in the second limiting groove and elastically abuts against the second outer conductor.

[0017] In one embodiment, the inner diameter of the first sliding hole is smaller than the inner diameter of the limiting sliding cavity.

[0018] In one embodiment, the first sliding hole and the limiting sliding cavity are coaxially arranged.

[0019] In one embodiment, the third outer conductor is provided with a first opening slot communicating with the mounting inner hole.

[0020] In one embodiment, a limiting flange is provided on the outer peripheral wall of the third outer conductor located at the inner end of the first plug hole.

[0021] In one embodiment, the dual-floating RF coaxial connector further includes an elastic member, which is sleeved on the outer peripheral wall of the second outer conductor. The outer peripheral wall of the second outer conductor is protruding with a limiting step, and both ends of the elastic member are respectively in contact with the first outer conductor and the limiting step.

[0022] A transfer interconnection device includes the dual-floating radio frequency coaxial connector described in any one of the above embodiments.

[0023] Compared with the prior art, the present invention has at least the following advantages:

[0024] 1. In the aforementioned dual-floating RF coaxial connector, the second outer conductor is located within the first sliding hole and elastically slidably connected to the first outer conductor. A retaining groove is formed on the outer peripheral wall of the second outer conductor and communicates with the retaining sliding cavity. The clamping ring protrudes within the retaining groove, and the outer peripheral wall of the clamping ring is located within the retaining sliding cavity. This allows the second outer conductor to elastically extend and slide axially relative to the first outer conductor, thereby providing the dual-floating RF coaxial connector with a large amount of axial floating. At the same time, the sliding position between the second outer conductor and the first outer conductor is reliably prevented from falling out by the clamping ring.

[0025] 2. Because the relative sliding area between the first outer conductor and the second outer conductor has a first floating range, and because the end of the second outer conductor located in the first sliding hole is a first spring structure, a first insertion hole is formed in the second outer conductor, and the first spring structure forms a first insertion interface connected to the first insertion hole, one end of the third outer conductor is located in the first insertion hole and elastically slidably connected to the second outer conductor, the third outer conductor elastically slides axially relative to the second outer conductor, and the third outer conductor has a second floating range during its sliding relative to the second outer conductor. In addition, a third floating range is provided between the inner conductor assembly and the outer wall of the first inner conductor, and a fourth floating range is provided at the connection between the first inner conductor and the inner conductor assembly in the constricted opening. As a result, the dual-floating RF coaxial connector has good floating performance as a whole, making it suitable for use in environments where board-to-board interconnection and axial tolerance are large.

[0026] 3. When the first outer conductor slides axially relative to the second outer conductor, the second outer conductor can also slide relative to the third outer conductor. Furthermore, the first inner conductor is fixedly connected to the third outer conductor via the first insulating member. The inner conductor assembly is located within the first insertion hole and is insulated and fixedly connected to the second outer conductor. This allows the second outer conductor to drive the inner conductor assembly to slide axially relative to the first inner conductor. This minimizes or even maintains impedance changes during axial floating compression, enabling the dual-floating RF coaxial connector to transmit high-frequency signals.

[0027] 4. Since the first solid wool button protrudes from the first insulating member and abuts against the end of the first inner conductor, and since the end of the inner conductor assembly away from the first inner conductor is a conductive elastic portion, and the conductive elastic portion protrudes from the end side of the second outer conductor, the dual-floating RF coaxial connector can achieve elastic interconnection between boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of a dual floating RF coaxial connector according to an embodiment;

[0030] Figure 2 for Figure 1 A schematic diagram of the floating interval of the dual floating RF coaxial connector shown;

[0031] Figure 3 for Figure 1 A schematic structural diagram of the clamping ring of the dual floating RF coaxial connector shown;

[0032] Figure 4 for Figure 3 A schematic diagram of another perspective of the collar shown;

[0033] Figure 5 for Figure 1 A schematic structural diagram of the first inner conductor of the dual floating RF coaxial connector shown;

[0034] Figure 6 for Figure 1 A schematic structural diagram of the first insulating member of the dual floating RF coaxial connector shown;

[0035] Figure 7 for Figure 6 a cross-sectional view of the first insulating member shown;

[0036] Figure 8 for Figure 1 A schematic structural diagram of the second insulating member of the dual floating RF coaxial connector;

[0037] Figure 9 for Figure 1 A schematic structural diagram of the second inner conductor of the dual floating RF coaxial connector shown;

[0038] Figure 10 for Figure 1 A schematic structural diagram of the second hollow hair button of the double floating RF coaxial connector shown;

[0039] Figure 11 for Figure 1 Schematic diagram of the structure of the third outer conductor of the double floating RF coaxial connector. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0041] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Traditional electrical contact connection equipment has the problem of poor consistency in microwave signal transmission, that is, there is discontinuity in electrical signal transmission in the grounding structure, especially for the transmission of multi-channel microwave signals, that is, for multiple signal transmission connections, resulting in poor signal transmission reliability of the electrical contact connection equipment; in addition, traditional electrical contact connection equipment has poor structural airtightness, especially for the transmission of multi-channel microwave signals, which makes the conductive substrate prone to oxidation, resulting in the problem of poor service life of the electrical contact connection equipment.

[0044] like Figure 1 As shown, a dual-floating RF coaxial connector 10 according to one embodiment includes a first outer conductor 100, a collar 200, a first insulator 300, a first inner conductor 400, a first solid button 500, a second outer conductor 600, a third outer conductor 700, and an inner conductor assembly 800. The first outer conductor 100 defines a first sliding hole 102, the inner wall of which forms a limited sliding cavity 104. The first sliding hole 102 communicates with the limited sliding cavity 104. The second outer conductor 600 is positioned within the first sliding hole 102 and is elastically slidably connected to the first outer conductor 100, enabling relative axial sliding between the first and second outer conductors 100, 600.

[0045] In one embodiment, the outer wall of the second outer conductor 600 is formed with a retaining groove 602 that communicates with the retaining sliding cavity 104. The end of the second outer conductor 600 located within the first sliding hole 102 is a first spring structure 610. A first insertion hole 604 is formed within the second outer conductor 600. The first spring structure 610 is formed with a first insertion port 606 that communicates with the first insertion hole 604. The collar 200 protrudes into the retaining groove 602, and the outer wall of the collar 200 is located within the retaining sliding cavity 104.

[0046] In one embodiment, the third outer conductor 700 defines a mounting inner hole 701. One end of the third outer conductor 700 is located in the first insertion hole 604 and elastically and slidably connected to the second outer conductor 600. The first insulating member 300 is located in the mounting inner hole 701 and is interference-connected to the third outer conductor 700. The first insulating member 300 is respectively sleeved onto the first inner conductor 400 and the first solid wool button 500. One end of the first solid wool button 500 abuts against the end of the first inner conductor 400, while the other end of the first solid wool button 500 protrudes from the first insulating member 300, making the first solid wool button 500 elastically and electrically conductive.

[0047] In one embodiment, the inner conductor assembly 800 is positioned within the first insertion hole 604 and is insulated and fixedly connected to the second outer conductor 600. The end of the inner conductor assembly 800 adjacent to the first inner conductor 400 is a second spring structure 801. A constricted opening 802 is formed at the end of the inner conductor assembly 800. The first inner conductor 400 is positioned within the constricted opening 802 and is interference-connected to the inner conductor assembly 800. The end of the inner conductor assembly 800 distal from the first inner conductor 400 is a conductive elastic portion. The conductive elastic portion protrudes from the end of the second outer conductor 600, allowing the inner conductor assembly 800 to be elastically connected to the outside and electrically conductive.

[0048] In the aforementioned dual-floating RF coaxial connector 10, the second outer conductor 600 is located within the first sliding hole 102 and elastically slidably connected to the first outer conductor 100. A retaining groove 602 communicating with the retaining sliding cavity 104 is formed on the outer peripheral wall of the second outer conductor 600. The collar 200 protrudes into the retaining groove 602, and the outer peripheral wall of the collar 200 is located within the retaining sliding cavity 104. This allows the second outer conductor 600 to elastically extend and slide axially relative to the first outer conductor 100, thereby providing the dual-floating RF coaxial connector 10 with a large amount of axial floating. At the same time, the sliding position between the second outer conductor 600 and the first outer conductor 100 is reliably prevented from falling out by the collar 200. Also, see Figure 2Because the relative sliding area between the first outer conductor 100 and the second outer conductor 600 has a first floating interval 12, and because the end of the second outer conductor 600 located in the first sliding hole 102 is a first spring structure 610, a first insertion hole 604 is formed in the second outer conductor 600, and the first spring structure 610 forms a first insertion interface 606 connected to the first insertion hole 604, one end of the third outer conductor 700 is located in the first insertion hole 604 and is elastically slidably connected to the second outer conductor 600, so that the third outer conductor 700 elastically slides axially relative to the second outer conductor 600. At the same time, the third outer conductor 700 has a second floating interval 14 during the sliding process relative to the second outer conductor 600, and a third floating interval 16 is provided between the inner conductor assembly 800 and the outer wall of the first inner conductor 400. The first inner conductor 400 has a fourth floating interval 18 at the connection between the inner conductor assembly 800 and the contraction opening 802. In this way, the dual-floating RF coaxial connector 10 has good floating performance as a whole and can be used in environments where board interconnection and axial tolerance are large. When the first outer conductor 100 slides axially relative to the second outer conductor 600, the second The outer conductor 600 can also slide relative to the third outer conductor 700. In addition, the first inner conductor 400 is fixedly connected to the third outer conductor 700 through the first insulating member 300. The inner conductor assembly 800 is located in the first plug hole 604 and is insulated and fixedly connected to the second outer conductor 600, so that the second outer conductor 600 can drive the inner conductor assembly 800 to slide axially relative to the first inner conductor 400. When the dual floating RF coaxial connector 10 is subjected to axial force, the dual floating RF coaxial connector 10 moves in the axial direction, but the first inner conductor 400, the inner conductor assembly 800 and the second outer conductor 400 are not in contact with each other. The impedance between the conductors 600 remains unchanged, so that the impedance change of the connector during the axial floating compression process is small or even unchanged, so that the dual-floating RF coaxial connector 10 can realize the transmission of high-frequency signals; because the first solid wool button 500 protrudes from the first insulating member 300, and the first solid wool button 500 abuts against the end of the first inner conductor 400, and because the end of the inner conductor assembly 800 away from the first inner conductor 400 is a conductive elastic portion, and the conductive elastic portion protrudes from the end side of the second outer conductor 600, the dual-floating RF coaxial connector 10 can realize elastic interconnection between boards.

[0049] like Figure 1 As shown, in one embodiment, the inner diameter of the first sliding hole 102 is smaller than the inner diameter of the limiting sliding cavity 104. Figure 3 and Figure 4In this embodiment, the outer diameter of the collar 200 is larger than the inner diameter of the first sliding hole 102 and smaller than the inner diameter of the limiting sliding cavity 104. This allows the collar 200 to be elastically restrained within the limiting sliding cavity 104, preventing the first outer conductor 100 and the second outer conductor 600 from separating from each other. This ensures that the first outer conductor 100 and the second outer conductor 600 are fixed together. Furthermore, the first outer conductor 100 and the second outer conductor 600 can slide relative to each other in the axial direction, thereby providing the dual-floating RF coaxial connector 10 with a certain amount of floating.

[0050] like Figure 1 As shown, in one embodiment, the first sliding hole 102 is coaxially arranged with the limiting sliding cavity 104, allowing the collar 200 to be better accommodated within the limiting sliding cavity 104 and enabling the first outer conductor 100 to slide relative to the outer contour of the second outer conductor 600 by a predetermined distance when subjected to axial force. In this embodiment, the inner diameter of the collar 200 is larger than the inner diameter of the limiting groove 602 and smaller than the minimum outer diameter of the second outer conductor 600. The outer diameter of the collar 200 is larger than the minimum outer diameter of the second outer conductor 600.

[0051] like Figure 1 As shown, in one embodiment, the dual-floating RF coaxial connector 10 further includes a first hollow velvet button 900, which is sleeved onto the first insulating member 300. The third outer conductor 700 defines a first retaining groove 702 that communicates with the mounting inner hole 701. The first hollow velvet button 900 is located within the first retaining groove 702 and elastically abuts against the third outer conductor 700, allowing the first hollow velvet button 900 to be securely embedded and connected to the third outer conductor 700. Simultaneously, one end of the dual-floating RF coaxial connector 10 can simultaneously achieve a small range of elastic floating connection through the first hollow velvet button 900 and the first solid velvet button 500, thereby ensuring reliable contact between the dual-floating RF coaxial connector 10 during inter-board interconnection. In this embodiment, the first hollow velvet button 900 is disposed around the first solid velvet button 500.

[0052] like Figure 1 As shown, in one embodiment, the outer peripheral wall of the first inner conductor 400 is provided with a first barb portion 402. Figure 6 and Figure 7The first insulating member 300 is formed with a first interference hole 302, and a first barb 402 is located within the first interference hole 302, enabling an interference fit connection between the first inner conductor 400 and the first insulating member 300. The first solid fur button 500 is located within the first interference hole 302 and connected to the first insulating member 300, preventing the first solid fur button 500 from separating from the first insulating member 300 and ensuring a secure interference fit connection between the first solid fur button 500 and the first insulating member 300. In this embodiment, one end of the first inner conductor 400 abuts against the end of the first solid fur button 500, while the other end of the first inner conductor 400 is located within the constriction 802 and securely plugged into the inner conductor assembly 800.

[0053] like Figure 1 and Figure 5 As shown, in one embodiment, the first inner conductor 400 includes a first inner conductor body 410 and a first barb portion 402 connected to each other. The diameter of the first inner conductor body 410 is smaller than the maximum diameter of the first barb portion 402. Furthermore, the cross-section of the first barb portion 402 is trapezoidal, with the minimum diameter of the first barb portion 402 being equal to the diameter of the first inner conductor body 410 and the maximum diameter of the first barb portion 402 being larger than the diameter of the first inner conductor body 410. This ensures that the first inner conductor body 410 is securely interference-fitted with the first insulating member via the first barb portion 402.

[0054] like Figure 1 、 Figure 8 and Figure 9 As shown, in one embodiment, the dual-floating RF coaxial connector 10 further includes a second insulating member 1100, and the outer peripheral wall of the inner conductor assembly 800 is provided with a second barb portion 803. The second insulating member 1100 is sleeved on the inner conductor assembly 800, and the second insulating member 1100 is formed with a second interference hole 1102. The second barb portion 803 is located in the second interference hole 1102, so that the inner conductor assembly 800 and the second insulating member 1100 are reliably assembled and fixedly connected.

[0055] like Figure 1 、 Figure 5 and Figure 8As shown, in one embodiment, the inner conductor assembly 800 includes a second inner conductor 810 and a second solid wool button 820, with a constriction 802 formed in the second inner conductor 810. In this embodiment, the constriction 802 is formed at the end of the second inner conductor 810 adjacent to the first inner conductor 400. The second inner conductor 810 is a slotted reed structure, and accordingly, the constriction 802 is a reed constriction 802. This allows the second inner conductor 810 to be elastically pluggable connected to the first inner conductor 400, while minimizing the resistance encountered when inserting the first inner conductor 400 into the constriction 802. In this embodiment, the first inner conductor 400 is located within the constriction 802 and has an interference fit with the second inner conductor 810, maintaining the plug-in connection in both the natural and compressed states, thereby ensuring reliable contact between the first inner conductor 400 and the second inner conductor 810.

[0056] like Figure 1 and Figure 9 As shown, further, a second opening slot 804 communicating with the shrinkage opening 802 is opened at the end of the second inner conductor, so that the first inner conductor 400 can be more elastically inserted into the shrinkage opening 802.

[0057] like Figure 1 、 Figure 5 and Figure 8 As shown, in one embodiment, the second insulating member 1100 is positioned within the first insertion hole 604 and fixedly connected to the second outer conductor 600. The second barb 803 protrudes from the outer circumferential wall of the second inner conductor 810. The second insulating member 1100 is sleeved onto the second inner conductor 810. The second barb 803 is positioned within the second interference hole 1102, ensuring a secure interference connection between the second inner conductor 810 and the second insulating member 1100. The second inner conductor 810 is positioned within the second interference hole 1102 and connected to the second insulating member 1100. One end of the second solid wool button 820 abuts against the end of the second inner conductor 810, while the other end protrudes from the second insulating member 1100. A conductive elastic portion is positioned within the second solid wool button 820, ensuring a secure and elastic connection to the outside.

[0058] like Figure 1 and Figure 9 As shown, in one embodiment, the second inner conductor 810 includes a second inner conductor body 805 and a second barb portion 803 connected to each other. The diameter of the second inner conductor body 805 is smaller than the maximum diameter of the second barb portion 803. Furthermore, the cross-section of the second barb portion 803 is trapezoidal, the minimum diameter of the second barb portion 803 is equal to the diameter of the second inner conductor body 805, and the maximum diameter of the second barb portion 803 is larger than the diameter of the second inner conductor body 805, so that the second inner conductor body 805 is reliably interference-fitted with the second insulating member through the second barb portion 803.

[0059] Furthermore, the first insulating member is an engineering plastic member or a ceramic member, so that the first insulating member has better insulation performance.

[0060] Furthermore, the second insulating member is an engineering plastic member or a ceramic member, so that the second insulating member has better insulation performance.

[0061] like Figure 1 and Figure 2 As shown, in one embodiment, the dual-floating RF coaxial connector 10 further includes a second hollow velvet button 1200, which is sleeved onto the second insulating member 1100. The second outer conductor 600 defines a second retaining groove 608 that communicates with the first insertion hole 604. The second hollow velvet button 1200 is positioned within the second retaining groove 608 and elastically abuts against the second outer conductor 600, allowing the second hollow velvet button 1200 to be securely embedded and connected to the second outer conductor 600. Simultaneously, the other end of the dual-floating RF coaxial connector 10 can simultaneously achieve a small range of elastic floating connection through the second hollow velvet button 1200 and the second solid velvet button 820, thereby ensuring reliable contact between the dual-floating RF coaxial connector 10 during inter-board interconnection. In this embodiment, the second hollow velvet button 1200 is disposed around the second solid velvet button 820.

[0062] like Figure 1 and Figure 2 As shown, in one embodiment, the first floating interval 12 is formed by the first outer conductor 100, the second outer conductor 600, and the collar 200. In one embodiment, the second floating interval 14 is formed by the inner hole of the first outer conductor 100, the end surface of the second outer conductor 600, and the end surface of the third outer conductor 700. In one embodiment, the third floating interval 16 is formed by the first insulating member 300 and the end surface of the second inner conductor 810. In one embodiment, the fourth floating interval 18 is formed by the end surface of the first inner conductor 400 and the inner hole of the constriction 802.

[0063] like Figure 1 and Figure 2 As shown, further, the axial size of the second floating interval 14 is less than the axial size of the first floating interval 12 , less than the axial size of the third floating interval 16 , and less than the axial size of the fourth floating interval 18 .

[0064] like Figure 1 and Figure 11As shown, in one embodiment, the third outer conductor 700 is provided with a first open slot 704 that communicates with the mounting inner hole 701. This allows the first insulating member 300 to be assembled more effectively within the mounting inner hole 701, while also allowing the third outer conductor 700 to be positioned within the first insertion hole 604 and elastically slidably connected to the second outer conductor 600. In this embodiment, the first open slot 704 is provided at the end of the third outer conductor 700 located within the first insertion hole 604. This provides the third outer conductor 700 with sufficient room to deform under axial force, thereby further enhancing the elastically slidable connection between the third outer conductor 700 and the second outer conductor 600. Specifically, there are multiple first open slots 704, each of which is spaced apart along the circumference of the third outer conductor 700. Each first open slot 704 is provided along the axial direction of the third outer conductor 700.

[0065] like Figure 1 and Figure 2 As shown, in one embodiment, a retaining flange 703 is provided on the outer peripheral wall of the third outer conductor 700 located within the inner end of the first insertion hole 604. This allows the third outer conductor 700 to be inserted into the second outer conductor 600 within the first insertion hole 604 with an interference fit. This allows the third outer conductor 700 and the second outer conductor 600 to remain engaged in either a natural or pressed state, thereby ensuring reliable contact between the third outer conductor 700 and the second outer conductor 600. In this embodiment, the third outer conductor 700 has a leaf spring structure, and the first opening slot 704 of the third outer conductor 700 can be formed by an expansion process.

[0066] like Figure 1 As shown, in one embodiment, the dual-floating RF coaxial connector 10 further includes an elastic member 1300. The elastic member 1300 is sleeved around the outer wall of the second outer conductor 600. A retaining step 605 is provided on the outer wall of the second outer conductor 600. The ends of the elastic member 1300 abut the first outer conductor 100 and the retaining step 605, respectively, to elastically and slidably connect the first and second outer conductors 100 and 600. Furthermore, the elastic member 1300 is a coil spring or an elastic rubber sleeve. In this embodiment, the coil spring provides the dual-floating RF coaxial connector 10 with a large amount of axial float.

[0067] Furthermore, a first interference fit barb is formed on the inner wall of the mounting inner hole 701 of the third outer conductor 700 . The first interference fit barb is interference-fitted with the first insulating member 300 , so that the third outer conductor 700 and the first insulating member 300 are reliably connected.

[0068] like Figure 1 and Figure 6As shown, the outer wall of the first insulating member 300 is further provided with a flange portion 301, which is located in the mounting inner hole 701 and is connected to the third outer conductor 700 by an interference fit. Furthermore, the outer wall of the first insulating member 300 is provided with an axial groove 303, which reduces the dielectric constant of the first insulating member 300 and achieves 50 ohm impedance matching between the inner and outer conductors.

[0069] Furthermore, the first insulating member 300 may be a polyimide insulating member, so that the first insulating member 300 has a lower dielectric constant.

[0070] like Figure 1 、 Figure 8 and Figure 9 As shown, the second insulating member 1100 further comprises a conductor retaining hole 1101, a second interference hole 1102, and a button retaining hole 1103, which are sequentially connected. The second barb 803 is located within the conductor retaining hole 1101 and is interference-connected to the second insulating member 1100. The second inner conductor 810 is located within the conductor retaining hole 1101 and is connected to the second insulating member 1100. The end of the second inner conductor 810, adjacent to the first inner conductor 400, is protruded from one end of the second insulating member 1100, thereby enhancing the floating connection between the second inner conductor 810 and the first inner conductor 400. A second solid fur button 820 is located in the second interference hole 1102 and the button retaining hole 1103, respectively. The second solid fur button 820 is interference-fitted with the second interference hole 1102, thereby preventing permanent deformation of the fur button and securing the fur button. Furthermore, the outer wall of the second inner conductor 810 is provided with a limiting end step 812, which abuts against the end face of the second insulating member, so that the second inner conductor 810 is limitedly installed on one side of the second insulating member. In addition, the second barb portion 803 is located in the second interference hole 1102 and is interference-connected with the second insulating member 1100, so that the second inner conductor 810 can be reliably assembled to the second insulating member.

[0071] like Figure 1 As shown, further, a dielectric constant reducing groove 1105 is opened on the outer peripheral wall of the second insulating member 1100, and the dielectric constant reducing groove 1105 is used to reduce the dielectric constant of the second insulating member 1100 to achieve 50 ohm impedance matching between the inner and outer conductors.

[0072] like Figure 1 As shown, further, the second insulating member 1100 can be a polytetrafluoroethylene insulating member, so that the second insulating member 1100 has a lower dielectric constant, and the dielectric constant of the second insulating member 1100 is smaller than the dielectric constant of the first insulating member 300.

[0073] like Figure 1As shown, further, one end of the above-mentioned double-floating RF coaxial connector 10 is respectively provided with a first hollow wool button 900 and a first solid wool button 500, and the other end of the double-floating RF coaxial connector 10 is respectively provided with a second hollow wool button 1200 and a second solid wool button 820. In addition, an elastic member 1300 is sleeved on the outer peripheral wall of the second outer conductor 600, and a limiting step 605 is protruded from the outer peripheral wall of the second outer conductor 600. The two ends of the elastic member 1300 respectively abut against the first outer conductor 100 and the limiting step 605, so that the first outer conductor 100 and the second outer conductor 600 are elastically slidably connected, so that the double-floating RF coaxial connector 10 can provide a large range of floating of more than 1 mm, and local floating can be achieved in a small range through the solid and hollow wool buttons, ensuring reliable interconnection and contact.

[0074] like Figure 1 As shown, further, the first solid fur button 500 and the second solid fur button 820 are both columnar elastic bodies, and in a natural state, they both protrude from the end surface of the corresponding insulating member, that is, the first solid fur button 500 protrudes from the end surface of the first insulating member 300, and the second solid fur button 820 protrudes from the end surface of the second insulating member 1100; after installation, the dual-floating RF coaxial connector 10 is in reliable contact with the interconnection pad under a certain amount of compression.

[0075] like Figure 1 As shown, further, the diameters of the first solid fur button 500 and the second solid fur button 820 are both smaller than the diameter of the pads of the PCB board, so that the dual-floating RF coaxial connector 10 can be better plugged into the pads of the PCB board.

[0076] like Figure 1 As shown, further, the first hollow wool button 900 and the second hollow wool button 1200 are both annular elastic bodies, and the inner diameters of the first hollow wool button 900 and the second hollow wool button 1200 are both larger than the diameter of the anti-pad of the PCB board, so that the dual-floating RF coaxial connector 10 can rebound under a certain amount of compression.

[0077] The present application also provides a transfer interconnection device, comprising the dual-floating RF coaxial connector 10 of any of the above embodiments.

[0078] Compared with the prior art, the present invention has at least the following advantages:

[0079] 1. In the aforementioned dual-floating RF coaxial connector 10, the second outer conductor 600 is located within the first sliding hole 102 and elastically slidably connected to the first outer conductor 100. A retaining groove 602 is formed on the outer peripheral wall of the second outer conductor 600 and communicates with the retaining sliding cavity 104. The collar 200 protrudes within the retaining groove 602, and the outer peripheral wall of the collar 200 is located within the retaining sliding cavity 104. This allows the second outer conductor 600 to elastically extend and slide axially relative to the first outer conductor 100, thereby providing the dual-floating RF coaxial connector 10 with a large amount of axial floating. Furthermore, the sliding position between the second outer conductor 600 and the first outer conductor 100 is reliably prevented from falling out by the collar 200.

[0080] 2. Since the relative sliding area between the first outer conductor 100 and the second outer conductor 600 has a first floating interval 12, and since the end of the second outer conductor 600 located in the first sliding hole 102 is a first spring structure 610, a first insertion hole 604 is formed in the second outer conductor 600, and the first spring structure 610 is formed with a first insertion interface 606 connected to the first insertion hole 604, one end of the third outer conductor 700 is located in the first insertion hole 604 and is elastically slidably connected to the second outer conductor 600, so that the third outer conductor 700 is relatively The second outer conductor 600 elastically slides axially, allowing the third outer conductor 700 to have a second floating interval 14 during its sliding relative to the second outer conductor 600. Furthermore, a third floating interval 16 is defined between the inner conductor assembly 800 and the outer wall of the first inner conductor 400, and a fourth floating interval 18 is defined at the connection between the first inner conductor 400 and the inner conductor assembly 800 within the constricted opening 802. This ensures that the dual-floating RF coaxial connector 10 exhibits excellent floating performance, making it suitable for use in environments where board-to-board interconnections and large axial tolerances are required.

[0081] 3. When the first outer conductor 100 slides axially relative to the second outer conductor 600, the second outer conductor 600 can also slide relative to the third outer conductor 700. Furthermore, the first inner conductor 400 is fixedly connected to the third outer conductor 700 via the first insulating member 300, and the inner conductor assembly 800 is located within the first insertion hole 604 and is insulated and fixedly connected to the second outer conductor 600. This allows the second outer conductor 600 to drive the inner conductor assembly 800 to slide axially relative to the first inner conductor 400. This minimizes or even maintains impedance changes during the axial floating compression process of the connector, enabling the dual-floating RF coaxial connector 10 to transmit high-frequency signals.

[0082] 4. Since the first solid wool button 500 protrudes from the first insulating member 300 and abuts against the end of the first inner conductor 400, and since the end of the inner conductor assembly 800 away from the first inner conductor 400 is a conductive elastic portion, and the conductive elastic portion protrudes from the end side of the second outer conductor 600, the dual-floating RF coaxial connector 10 can achieve elastic interconnection between boards.

[0083] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A dual floating radio frequency coaxial connector, comprising a first outer conductor, a collar, a first insulating member, a first inner conductor, and a first solid wool button, wherein the first outer conductor is provided with a first sliding hole, characterized in that: The inner wall of the first sliding hole forms a limited sliding cavity, and the first sliding hole is connected to the limited sliding cavity; the dual-floating RF coaxial connector further includes: The second outer conductor is located in the first sliding hole and is elastically slidably connected to the first outer conductor. The outer peripheral wall of the second outer conductor is formed with a limiting groove connected to the limiting sliding cavity. The end of the second outer conductor located in the first sliding hole is a first spring structure. The second outer conductor is formed with a first plug hole. The first spring structure is formed with a first plug interface connected to the first plug hole. The clamping ring is protruded in the limiting groove, and the outer peripheral wall of the clamping ring is located in the limiting sliding cavity. A third outer conductor is provided with a mounting inner hole, one end of the third outer conductor is located in the first insertion hole and is elastically slidably connected to the second outer conductor; the first insulating member is located in the mounting inner hole and is interference-connected to the third outer conductor, the first insulating member is respectively sleeved on the first inner conductor and the first solid wool button, one end of the first solid wool button abuts against the end of the first inner conductor, and the other end of the first solid wool button protrudes from the first insulating member; The inner conductor assembly is located in the first plug-in hole and is insulated and fixedly connected to the second outer conductor. The end of the inner conductor assembly adjacent to the first inner conductor is a second reed structure. A contraction opening is formed at the end of the inner conductor assembly. The first inner conductor is located in the contraction opening and is interference-connected with the inner conductor assembly. The end of the inner conductor assembly away from the first inner conductor is a conductive elastic portion, and the conductive elastic portion protrudes from the end side of the second outer conductor.

2. The dual floating RF coaxial connector according to claim 1, wherein: The device further includes a first hollow wool button, the first hollow wool button being sleeved on the first insulating member, the third outer conductor being provided with a first limiting groove communicating with the mounting inner hole, the first hollow wool button being located in the first limiting groove and elastically abutting against the third outer conductor; and / or, The first insulating member is formed with a first interference hole; the outer peripheral wall of the first inner conductor is provided with a first barb portion, and the first barb portion is located in the first interference hole; the first solid wool button is located in the first interference hole and is connected to the first insulating member.

3. The dual floating RF coaxial connector according to claim 1, wherein: The dual-floating RF coaxial connector further includes a second insulating member. The outer peripheral wall of the inner conductor assembly is provided with a second barb portion. The second insulating member is sleeved on the inner conductor assembly. The second barb portion is located in the second interference hole.

4. The dual floating RF coaxial connector according to claim 3, wherein: The inner conductor assembly includes a second inner conductor and a second solid wool button, and the contraction opening is formed in the second inner conductor; The second insulating member is located in the first plug-in hole and fixedly connected to the second outer conductor, the second barb portion is protruded from the outer peripheral wall of the second inner conductor, the second insulating member is sleeved on the second inner conductor, and the second barb portion is located in the second interference hole; the second inner conductor is located in the second interference hole and connected to the second insulating member, one end of the second solid wool button is in contact with the end of the second inner conductor, and the other end of the second solid wool button protrudes from the second insulating member, and the conductive elastic portion is provided on the second solid wool button.

5. The dual floating RF coaxial connector according to claim 4, wherein: The dual-floating RF coaxial connector also includes a second hollow wool button, which is sleeved on the second insulating member. The second outer conductor is provided with a second limiting groove connected to the first plug hole. The second hollow wool button is located in the second limiting groove and elastically abuts against the second outer conductor.

6. The dual floating RF coaxial connector according to claim 1, wherein: The inner diameter of the first sliding hole is smaller than the inner diameter of the limiting sliding cavity.

7. The dual floating RF coaxial connector according to claim 6, wherein: The first sliding hole and the limiting sliding cavity are coaxially arranged.

8. The dual floating RF coaxial connector according to claim 1, wherein: The third outer conductor is provided with a first opening groove communicating with the mounting inner hole.

9. The dual floating RF coaxial connector according to claim 8, wherein: The outer peripheral wall of the third outer conductor located at the inner end of the first plug hole is provided with a limiting flange; and / or, The dual-floating RF coaxial connector further includes an elastic member, which is sleeved on the outer peripheral wall of the second outer conductor. The outer peripheral wall of the second outer conductor is protruded with a limiting step, and two ends of the elastic member are respectively in contact with the first outer conductor and the limiting step.

10. A switching interconnection device, characterized in that: The dual-floating radio frequency coaxial connector comprises the dual-floating radio frequency coaxial connector according to any one of claims 1 to 9.

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