Constant impedance tolerance inter-board radio frequency connector and multi-port inter-board connector

Abstract

The constant-impedance tolerance inter-board radio frequency connector and the multi-port inter-board connector comprise a first connecting assembly and a second connecting assembly which are matched with each other, and the second connecting assembly comprises a fixing unit connected with a PCB and a switching unit matched with the first connecting assembly. The adapter inner conductor of the adapter unit has a uniform outer diameter and extends out of the adapter outer conductor, and the first outer conductor of the first connecting assembly has a uniform inner diameter, so that the connector keeps the characteristic impedance constant in the sliding matching process of the adapter unit and the first connecting assembly; the multi-port high-tolerance high-density layout radio frequency connector has the advantages that the multi-port high-tolerance high-density layout radio frequency connector is simple in structure and low in cost, reflection during signal transmission is reduced, excellent return loss performance under high frequency can be guaranteed, a multi-port high-tolerance high-density layout radio frequency connection scheme can be realized, and the application frequency can reach 8Ghz and can be expanded to 16GHz at most.

Description

Technical Field

[0001] The invention relates to the field of connector manufacturing, in particular to a constant impedance tolerance inter-board radio frequency connector and a multi-port inter-board connector. Background Art

[0002] Connectors are mainly used to connect circuits and are the core basic components necessary for electrical connections in circuit systems. The main application areas of connectors are smart homes, automobiles, communications, computers and peripherals, industry, military and aerospace. With the development of 5G communication technology, the application of inter-board RF connectors, which are an important part of 5G base stations, is also increasing.

[0003] Inter-board RF connectors are used to achieve interconnection between two circuit boards, especially RF coaxial connectors are mostly used in small space and multi-channel RF signal transmission environments. RF coaxial connectors usually use adapter connectors to connect two sliding connectors to form a RF signal transmission connection structure; the adapter connector of the existing RF coaxial connector generally has one end that is pushed-in and clamped (Snap-on) to form a fixed "semi-permanent connection" with a sliding connector, and has a large mating retention force to ensure that it is inserted to the bottom; the other end is mated with another sliding connector in a slide-on manner. During the slide-on mating process, due to the existence of axial tolerance, the characteristic impedance changes continuously, especially in the parallel connection of multiple channels, it is easy for some pathways to be mated to the bottom while others are not mated to the bottom, so that the impedance is different in different mating situations, resulting in RF impedance mismatch, which seriously affects the RF performance of the RF connector. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a constant impedance tolerance inter-board radio frequency connector and a multi-port inter-board connector.

[0005] The main contents of the present invention include:

[0006] A constant impedance tolerance inter-board radio frequency connector, comprising a first connection component and a second connection component respectively welded on corresponding PCB boards; the second connection component comprises a fixing unit welded to the corresponding PCB board and a switching unit plugged into the fixing unit;

[0007] The switching unit comprises a switching outer conductor, a switching insulator is arranged inside the switching outer conductor, a switching inner conductor is arranged inside the switching insulator, and an insertion section of the switching inner conductor extends to the outside of the switching insulator;

[0008] The first connection assembly includes a first insulator and a first inner conductor disposed in the first insulator; a first outer conductor is disposed outside the first insulator, and the first outer conductor has an accommodating space for accommodating the switching unit;

[0009] When the first connecting component and the second connecting component are plugged into each other, the transition inner conductor is plug-in-connected with the first inner conductor, and the transition outer conductor is accommodated in the accommodation space;

[0010] The insertion section of the transition inner conductor has a uniform outer diameter; the accommodation space of the first outer conductor has a uniform inner diameter.

[0011] Preferably, the transition insulator comprises a transition insulation body, an outer peripheral surface of one end of the transition insulation body away from the fixing unit extends radially outward to form a transition folding portion, and the transition folding portion is arranged outside the transition outer conductor.

[0012] Preferably, the outer edge of the transition folding portion is provided with a first chamfer;

[0013] The transition inner conductor comprises a transition inner main body section, the outer diameter of the insertion section of the transition inner conductor is larger than the outer diameter of the transition inner main body section, and the outer circumference where the insertion section of the transition inner conductor connects with the transition inner main body section has a second chamfer.

[0014] Preferably, the transition unit further comprises a sleeve, wherein the sleeve at least partially covers the transition outer conductor, and the transition outer conductor is connected to the transition insulator via the sleeve.

[0015] Preferably, a plurality of clamping arms are formed radially on the inner wall of the socket, an insulating clamping portion is convexly provided on the outer circumferential surface of the other end of the transition insulator, and a clamping groove is circumferentially provided on the outer circumference of the insulating clamping portion; the clamping arm passes through the transition outer conductor and is arranged in the clamping groove.

[0016] Preferably, the outer diameter of the portion of the transition inner main body segment corresponding to the portion disposed within the insulating clamping portion is smaller than the outer diameter of the remaining portion.

[0017] Preferably, a transfer receiving portion is provided at one end of the transfer inner conductor away from the insertion section, and a center pin of the fixing unit is inserted into the transfer receiving portion.

[0018] Preferably, the transition outer conductor comprises a transition outer body, and a plurality of transition outer elastic arms are axially extended from both ends of the transition outer body respectively, and ends of the transition outer elastic arms are bent to form transition outer contact portions electrically connected to the first outer conductor.

[0019] Preferably, the first insulator includes a first insulating base and a first insulating ring body, and the first inner conductor includes a first welding portion and a first receiving portion; the first welding portion is embedded in the first insulating base; and the first receiving portion is arranged in the center hole of the first insulating ring body.

[0020] Preferably, the first receiving portion includes a first annular wall and a plurality of first elastic arms formed on the end surface of the first annular wall, and the plurality of first elastic arms gradually incline radially from one end connected to the first annular wall toward the other end;

[0021] A guide surface is provided at the end of the insertion section of the transition inner conductor.

[0022] The present invention also proposes a multi-port inter-board connector, including a first inter-board component and a second inter-board component, wherein the first inter-board component includes a plurality of the above-mentioned first connection components; and the second inter-board component includes a plurality of the above-mentioned second connection components.

[0023] Compared with the prior art, the constant impedance tolerance inter-board RF connector and the multi-port inter-board connector of the present invention have the following beneficial effects:

[0024] (1) The transfer inner conductor of the transfer unit extends out of the transfer outer conductor and has a uniform outer diameter; at the same time, the first outer conductor of the first connecting component that is inserted into the transfer unit has a corresponding accommodation space, and during the sliding mating process between the transfer unit and the first connecting component, the characteristic impedance is kept constant, which reduces reflection during signal transmission and ensures excellent return loss performance at high frequencies;

[0025] (2) The transition inner conductor is needle-shaped and can be smoothly inserted into the first inner conductor even when it is not aligned in the radial direction;

[0026] (3) The transition insulator has a transition folded portion arranged on the axially outer side of the transition inner conductor, which can prevent the transition outer conductor from being squeezed, deformed and damaged when radial misalignment occurs;

[0027] (4) It can realize multi-port, large-tolerance, high-density layout RF connection solutions with an application frequency of up to 8 GHz and can be expanded to 16 GHz. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure;

[0029] Figure 2 It is a schematic diagram of the overall structure of the switching unit;

[0030] Figure 3 is a cross-sectional view of the switching unit;

[0031] Figure 4It is a schematic diagram of the structure of the transfer inner conductor;

[0032] Figure 5 is a schematic diagram of the structure of the transfer insulator;

[0033] Figure 6 It is a schematic diagram of the structure of the transfer outer conductor;

[0034] Figure 7 The schematic diagram of the structure of the switching unit for hiding the switching outer conductor;

[0035] Figure 8 is a schematic diagram of the structure of the socket;

[0036] Fig. 9 is a schematic diagram of the overall structure of the first connecting component;

[0037] Fig.10 is a cross-sectional view of a first connecting component;

[0038] Fig.11 is a schematic structural diagram of a first inner conductor;

[0039] Fig.12 is a schematic diagram of constant impedance;

[0040] Fig.13 A schematic diagram of the characteristic impedance change of the existing tolerance board-to-board connector;

[0041] Reference numerals:

[0042] 1-transfer unit; 10-transfer outer conductor; 100-transfer outer body; 101-transfer outer elastic arm; 1010-transfer outer contact part;

[0043] 11-transfer insulator; 110-transfer insulation body; 111-transfer folding portion; 1110-first chamfer; 112-insulation clamping portion; 1120-clamping groove; 12-transfer inner conductor; 120-transfer inner body section; 1200-inner boss; 121-insertion section;

[0044] 1210-second chamfer; 1211-guide surface; 13-sleeve piece; 130-clamping arm;

[0045] 2-first connecting assembly; 20-first outer conductor; 200-accommodating space; 21-first insulator; 210-first insulating base;

[0046] 211 - first insulating ring body; 22 - first inner conductor; 220 - first welding portion; 221 - first receiving portion; 2210 - first ring wall; 2211 - first elastic arm; 222 - first boss;

[0047] 3-fixed unit; 30-fixed outer conductor; 31-fixed insulator; 32-fixed center needle. DETAILED DESCRIPTION

[0048] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0049] Existing tolerance board-to-board RF connectors have tolerances during actual manufacturing and use, and there are inevitably differences in the relative positions of the two connected components. These differences may cause the connector to move or offset slightly in the axial or radial direction, thereby causing changes in the characteristic impedance. Especially for multi-port connections, in order to improve assembly efficiency, multiple ports will be concentrated on one connector, such as opening multiple accommodating spaces on a metal shell, assembling insulators equipped with inner conductors in them, and then batch plugging with matching connectors. There are high requirements for the alignment accuracy of each port. During the plugging process, it is easy for one or some ports to fail to be plugged in due to inaccurate plugging, resulting in the characteristic impedance failing to reach the standard impedance, and the difference in the inaccurate plugging makes it impossible to accurately compensate for it.

[0050] The present invention proposes a constant impedance tolerance board-to-board radio frequency connector, which can solve the problem that the existing tolerance board-to-board connector is not properly inserted and thus cannot reach the standard impedance. Figure 1 The main improvement of the inter-board RF connector proposed in the present invention lies in the adapter connector used to connect two sliding connectors. Since the adapter connector is first plugged into one of the sliding connectors and then connected to the other sliding connector, especially for a sliding connector with multiple ports, its metal shell (also called outer conductor) is centrally formed into a whole, forming a shape with multiple ports, and the corresponding adapter connector is a separate individual, which can be reliably matched with one of the sliding connectors, that is, it is guaranteed to be plugged into the bottom. After the assembly is completed, the multiple adapter connectors and the corresponding sliding connectors also form a whole, that is, there is basically no problem of impedance not reaching the standard impedance due to poor plugging between the two; and when the two form a whole, when it is plugged into another sliding connector, it is easy to have a problem that a certain adapter connector and the sliding connector are not plugged into the right position. Therefore, the present invention mainly solves the problem that the impedance may not reach the standard impedance when the adapter connector is matched with another sliding connector. For better description, the sliding connector pre-matched with the adapter connector is called a fixed unit 3, the adapter connector is called an adapter unit 1, and the assembly of the two after assembly is called a second connection component; and correspondingly, the other sliding connector is called a first connection component 2.

[0051] In addition, since the present invention can better solve the problem of a multi-port tolerance inter-board RF connector, the following implementation manner and drawings are described by taking a multi-port connector as an example.

[0052] See also Figure 1 The present invention can achieve a constant impedance after the first connecting component and the second connecting component are plugged in, and it also means that no matter whether the two are plugged in or not, the corresponding characteristic impedance is equal. Through pre-design, no matter whether the plugging is in place or not, the corresponding characteristic impedance can be guaranteed to be a standard impedance of 50Ω. The main improvement of the present invention lies in the structure of the switching unit. Specifically, the switching unit 1 includes a switching outer conductor 10, a switching insulator 11 is arranged in the switching outer conductor 10, and a switching inner conductor 12 is arranged in the switching insulator 11. More specifically, the switching inner conductor 12 is in the shape of a central needle, and the insertion section 121 of the switching inner conductor extends to the outside of the switching insulator 11, that is, the switching insulator 11 does not cover the insertion section 121 of the switching inner conductor; at the same time, Fig.10 As shown, the first connecting component 2 includes a first insulator 21 and a first inner conductor 22 arranged in the first insulator 21; a first outer conductor 20 is arranged outside the first insulator 21, and the first outer conductor 20 has a accommodating space 200 for accommodating the adapter unit 1; the first inner conductor 22 also has a first receiving portion 221, so that when the adapter unit 1 is matched with the first connecting component 2, the adapter outer conductor 10 is accommodated in the accommodating space 200, so that the outer wall of the adapter outer conductor 10 is electrically contacted with the inner wall of the first outer conductor 20; and the insertion section 121 of the adapter inner conductor is also inserted into the first receiving portion 221 of the first inner conductor 22 to achieve electrical contact.

[0053] like Fig.12 Since the transition inner conductor 12 extends out of the axial outside of the transition insulator 11 and the transition outer conductor 10, during the insertion process, the inner diameter D of the outer conductor remains the inner diameter of the first outer conductor 20, and the outer diameter d of the corresponding inner conductor is the outer diameter of the insertion section 121 of the transition inner conductor 12. According to the calculation method of the characteristic impedance, since the dielectric constant of the insulating material, the inner diameter of the outer conductor and the inner diameter of the inner conductor remain unchanged, the characteristic impedance can be kept constant regardless of whether the transition unit 1 and the first connecting component 2 are fully inserted.

[0054] like Fig.13 As shown, in the prior art, when the left and right connectors are not fully inserted into each other during the insertion process, the inner diameter of the outer conductor is D', and when the two are fully inserted into each other, the inner diameter of the corresponding outer conductor is changed to D", which causes the characteristic impedance to fail to reach the standard impedance; Fig.13The inner conductor 22' of the left connector is a center pin, and the outer conductor 10' of the right connector enters into the outer conductor 20' of the left connector, and one end of the inner conductor 22' of the left connector is fixedly arranged on its insulator 21', and its pin portion is inserted into the inner conductor 12' of the right connector; when the structures of the inner conductors of the left and right connectors are interchanged, and their structure is such as the structure disclosed in Chinese utility model patent CN217009805U, the characteristic impedance cannot be kept constant due to the presence of a variable air cavity, and the male pin is designed to be stepped to achieve compensation for the corresponding characteristic impedance.

[0055] Compared with the prior art, the present application ensures constant characteristic impedance during the insertion process by maintaining the outer diameter of the inner conductor and the inner diameter of the outer conductor of the connector formed by the first connecting component 2 and the second connecting component. In the present invention, the insertion section 121 of the transition inner conductor 12 has a uniform outer diameter d; and the accommodation space 200 of the first outer conductor 20 has a uniform inner diameter D.

[0056] For further information, see Figures 2 to 8 The two ends of the adapter unit 1 are designed asymmetrically, the inner conductor of the end connected to the first connecting component 2 is a center pin, and the inner conductor of the end connected to the fixing unit 3 is provided with a receiving space for inserting the fixed center pin 32 of the fixing unit 3; Figure 1 As shown, the fixed unit 3 includes a fixed outer conductor 30 and a fixed insulator 31 accommodated in the fixed outer conductor 30, wherein the fixed center pin is fixedly arranged in the fixed insulator 31. When the second connection component is multi-port, the plurality of fixed outer conductors 31 of the fixed unit 3 are a whole, presenting a plurality of ports; then the plurality of the switching units 1 are respectively plugged into the corresponding ports to achieve the connection between the two; the switching insulator 11 of the switching unit 1 is covered in the switching outer conductor 10, and the switching outer conductor 10 can be a cylindrical structure formed by stamping a metal part and bending, and the switching insulator 11 is injection molded, and the transition insulator 11 is inserted into the transition outer conductor 10. In order to ensure the reliability of the assembly of the two, a sleeve 13 is arranged outside the transition outer conductor 10. The sleeve 13 is also cylindrical and can be partially covered outside the transition outer conductor 10. The inner wall of the sleeve 13 is radially formed with a plurality of clamping arms 130. Correspondingly, a clamping groove 1120 is correspondingly opened on the transition insulator 11. The clamping arm 130 can pass through the transition outer conductor 10 and be arranged in the clamping groove 1120, thereby ensuring the relatively stable assembly of the transition insulator 11 and the transition outer conductor 10.

[0057] In one embodiment, the transfer unit includes two transfer insulators 11, which are respectively assembled into the transfer outer conductor 10 from both ends of the transfer outer conductor 10, and then mounted on the outside of the transfer outer conductor 10 using a sleeve 13 and crimped around the transfer outer conductor 10. Figure 3 As shown, the two transition insulators 11 are stably assembled at the same time; and in order to achieve impedance matching, an insulating clamping portion 112 is convexly provided on the outer circumference of one end of the transition insulator 11 away from the corresponding end of the transition inner conductor 12, that is, the outer diameter of the transition insulator at this location is larger than the outer diameter of the remaining parts, and the clamping groove 1120 is formed along the circumferential direction on the outer circumference of the insulating clamping portion 112.

[0058] In one embodiment, if Figure 6 As shown, the transition outer conductor 10 includes a transition outer body 100 , and a plurality of transition outer elastic arms 101 extend axially from both ends of the transition outer body 100 . The ends of the transition outer elastic arms 101 are bent to form transition outer contact portions 1010 electrically connected to the first outer conductor 20 .

[0059] Furthermore, the transition insulator 11 includes a transition insulator body 110, and a transition folding portion 111 is formed by radially extending outward on the outer peripheral surface of one end of the transition insulator body 110 close to the insertion section 121 of the transition inner conductor 12, and the transition folding portion 111 is arranged on the radial outer side of the transition outer conductor 10, so that when the transition outer conductor 10 is inserted into the accommodation space 200 of the first outer conductor 20, even if there is a radial deviation, it will not be deformed and damaged due to force; similarly, a corresponding transition folding portion 111 can also be arranged at one end of another transition insulator close to the fixing unit 3, but since the insertion of the transition unit 1 and the fixing unit 3 is easier to operate, the possibility of radial deviation is small, so the transition insulator can adopt a conventional design. In this embodiment, a transition receiving portion is arranged at one end of the transition inner conductor 12 away from the insertion section 121, and the center pin 32 of the fixing unit is inserted into the transition receiving portion.

[0060] Furthermore, a first chamfer 1110 is provided on the outer edge of the transition folding portion 111 to provide a certain guide effect during insertion.

[0061] In one embodiment, if Figure 4As shown, the transition inner conductor 12 includes a transition inner main body section 120, and the outer diameter of the insertion section 121 of the transition inner conductor is larger than the outer diameter of the transition inner main body section 120. Accordingly, the outer diameter of the portion of the transition inner main body section 120 corresponding to the insulating clamping portion 112 is smaller than the outer diameter of the remaining portion, and the outer circumference of the connection between the insertion section 121 of the transition inner conductor and the transition inner main body section 120 has a second chamfer 1210. In order to ensure the stable assembly of the transition inner conductor 12 and the transition insulator 11, an inner boss 1200 is convexly provided on the transition inner main body section 120, and a corresponding limiting groove is provided on the inner wall of the center hole of the transition insulator 11. When the inner boss 1200 is provided in the limiting groove, it means that the transition inner conductor 12 has been assembled in place, further ensuring the accuracy of the characteristic impedance of the connector.

[0062] See also Figures 9 to 11 The first outer conductor 20 of the first connecting component 2 is also a whole when used in multi-port applications, and multiple first insulators 21 are respectively assembled in corresponding ports. Specifically, the first insulator 21 includes a first insulating base 210 and a first insulating ring body 211. Correspondingly, the first inner conductor 22 includes a first welding portion 220 and a first receiving portion 221; the first welding portion 220 is embedded in the first insulating base 210 through a first boss 222 protruding from its outer circumference; the first receiving portion 221 is arranged in the center hole of the first insulating ring body 211. During assembly, the first insulating ring body 211 can be assembled from the bottom (i.e., the side facing the PCB board) in the stepped groove of the first outer conductor 10, and then the first insulating base 210 equipped with the first inner conductor is interference-assembled in the stepped groove of the first outer conductor 10; and the opening portion of the first outer conductor 10 constitutes the receiving space 200 for accommodating the insertion of the adapter unit.

[0063] In order to facilitate the insertion of the transition inner conductor 12 into the first receiving portion 221, the first receiving portion 221 includes a first annular wall 2210 and a plurality of first elastic arms 2211 formed on the end surface of the first annular wall 2210. The plurality of first elastic arms 2211 gradually tilt radially from one end connected to the first annular wall 2210 to the other end, thereby ensuring the reliability of the connection with the transition inner conductor 22 to a certain extent; and since the outer diameter of the transition inner conductor 22 is uniform, the degree of opening of the first elastic arm 2211, that is, its outer diameter, will remain unchanged during the insertion process, and will not cause changes in the characteristic impedance of this part. Furthermore, a guide surface 1210 is provided at the end of the insertion section 121 of the transition inner conductor 12.

[0064] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A constant impedance tolerance inter-board radio frequency connector, characterized in that: It includes a first connection component and a second connection component respectively welded on corresponding PCB boards; the second connection component includes a fixing unit welded to the corresponding PCB board and a switching unit plugged into the fixing unit; The switching unit comprises a switching outer conductor, a switching insulator is arranged inside the switching outer conductor, a switching inner conductor is arranged inside the switching insulator, and an insertion section of the switching inner conductor extends to the outside of the switching insulator; The first connection assembly includes a first insulator and a first inner conductor disposed in the first insulator; a first outer conductor is disposed outside the first insulator, and the first outer conductor has an accommodating space for accommodating the switching unit; When the first connecting component and the second connecting component are plugged into each other, the transition inner conductor is plug-in-connected with the first inner conductor, and the transition outer conductor is accommodated in the accommodation space; The insertion section of the transition inner conductor has a uniform outer diameter; the accommodation space of the first outer conductor has a uniform inner diameter.

2. A constant impedance tolerance board-to-board RF connector according to claim 1, characterized in that: The transition insulator comprises a transition insulation body, an outer peripheral surface of one end of the transition insulation body away from the fixing unit extends radially outward to form a transition folding portion, and the transition folding portion is arranged outside the transition outer conductor.

3. A constant impedance tolerance board-to-board RF connector according to claim 2, characterized in that: The outer edge of the transition folding portion is provided with a first chamfer; The transition inner conductor comprises a transition inner main body section, the outer diameter of the insertion section of the transition inner conductor is larger than the outer diameter of the transition inner main body section, and the outer circumference where the insertion section of the transition inner conductor connects with the transition inner main body section has a second chamfer.

4. The constant impedance tolerance inter-board RF connector according to claim 2, characterized in that: The transition unit further includes a sleeve, which at least partially covers the transition outer conductor, and the transition outer conductor is connected to the transition insulator through the sleeve.

5. The constant impedance tolerance inter-board radio frequency connector according to claim 4, characterized in that: The inner wall of the socket is radially formed with a plurality of clamping arms, the outer circumferential surface of the other end of the transition insulator is convexly provided with an insulating clamping portion, and the outer circumference of the insulating clamping portion is circumferentially provided with a clamping groove; the clamping arm passes through the transition outer conductor and is arranged in the clamping groove.

6. The constant impedance tolerance inter-board radio frequency connector according to claim 5, characterized in that: The outer diameter of the portion of the transition inner main body section corresponding to the portion disposed within the insulating clamping portion is smaller than the outer diameter of the remaining portion.

7. The constant impedance tolerance inter-board radio frequency connector according to claim 1, characterized in that: A transfer receiving portion is provided at one end of the transfer inner conductor away from the insertion section, and a center pin of the fixing unit is inserted into the transfer receiving portion.

8. The constant impedance tolerance inter-board radio frequency connector according to claim 1, characterized in that: The transition outer conductor comprises a transition outer body, and a plurality of transition outer elastic arms are respectively extended axially at both ends of the transition outer body, and ends of the transition outer elastic arms are bent to form transition outer contact portions electrically connected to the first outer conductor.

9. The constant impedance tolerance inter-board radio frequency connector according to claim 1, characterized in that: The first insulator includes a first insulating base and a first insulating ring body, and the first inner conductor includes a first welding portion and a first receiving portion; the first welding portion is embedded in the first insulating base; and the first receiving portion is arranged in the center hole of the first insulating ring body.

10. The constant impedance tolerance inter-board radio frequency connector according to claim 9, characterized in that: The first receiving portion includes a first annular wall and a plurality of first elastic arms formed on the end surface of the first annular wall, wherein the plurality of first elastic arms gradually incline radially from one end connected to the first annular wall toward the other end; A guide surface is provided at the end of the insertion section of the transition inner conductor.

11. A multi-port board-to-board connector, characterized in that: It comprises a first inter-board component and a second inter-board component, wherein the first inter-board component comprises a plurality of first connection components according to any one of claims 1 to 10; and the second inter-board component comprises a plurality of second connection components according to any one of claims 1 to 10.

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