A plug housing and high-frequency high-speed connector

Abstract

The application provides a plug shell and a high-frequency high-speed connector, the high-frequency high-speed connector comprising a plug and a socket, the plug comprising a plug shell, a plug insulating inner core and a plug contact, the plug shell comprising a shielding sleeve, an installation cavity for installing the plug insulating inner core and a receiving cavity for mating with the socket are arranged in the shielding sleeve, an impedance adjusting body is arranged at the transition position of the installation cavity and the receiving cavity, the impedance adjusting body extends along the radial direction of the shielding sleeve, so as to be close to the part of the plug contact located at the interface between the plug insulating inner core and the socket insulating inner core during the mating, and the part and the adjacent part thereof are matched in terms of characteristic impedance. The plug shell provided by the application effectively solves the technical problem that the characteristic impedance of the plug-in section changes sharply due to the gap between the plug insulating inner core and the socket insulating inner core during the mating in the prior art.

Description

TECHNICAL FIELD

[0001] The application relates to a plug shell and a high-frequency high-speed connector and belongs to the technical field of connectors. BACKGROUND

[0002] The existing high-frequency high-speed connector comprises a plug and a socket, the plug comprises a plug shell, a plug insulating inner core and a plug contact, the socket comprises a socket shell, a socket insulating inner core and a socket contact, the plug shell is provided with a mounting cavity for mounting the plug insulating inner core and a containing cavity for mating with the socket, the plug insulating inner core is provided with a contact mounting hole, the plug contact comprises a plug-in section, the plug contact is mounted in the contact mounting hole, and the plug-in section of the plug contact extends to the containing cavity through the front end of the contact mounting hole; the socket insulating inner core is provided with a contact assembly hole, and the socket contact is arranged on the socket insulating shell through the socket insulating inner core; when the plug and the socket are mated, the plug-in section of the plug contact and the socket contact are mated in the containing cavity.

[0003] In order to ensure the transmission quality and the transmission rate of signals, the high-frequency high-speed connector needs to have stable and less fluctuating characteristic impedance, which requires that the plug insulating inner core and the socket insulating inner core can be closely attached without gaps when the plug and the socket are mated, so that the corresponding insulating inner core can wrap the plug contact and the socket contact in the extension direction of the plug contact and the socket contact, thereby ensuring that the characteristic impedance of the plug contact and the socket contact in the extension direction can be matched.

[0004] However, in the design process of the high-frequency high-speed connector, due to the machining tolerances of the parts themselves and the tolerance accumulation caused by the mutual cooperation of the parts, there is a gap between the plug insulating inner core and the socket insulating inner core when the plug and the socket are mated; and in the automobile field, the high-frequency high-speed connector usually adopts a straight type quick plug-in elastic buckle locking structure, in order to ensure that the locking structure can smoothly rebound to the position and be fixed, the gap is about 0.1-1mm. The medium between the part corresponding to the gap on the plug-in section and the metal shell becomes air, and the dielectric constant of the insulating inner core is much larger than that of air, so that the characteristic impedance at the part corresponding to the gap on the plug-in section changes dramatically, thereby affecting the signal quality. SUMMARY

[0005] The application aims to provide a plug shell to solve the technical problem that the characteristic impedance of the plug-in section changes dramatically due to the gap between the plug insulating inner core and the socket insulating inner core when the plug and the socket are mated in the prior art. Meanwhile, the application also provides a high-frequency high-speed connector to solve the above problem.

[0006] In the application, the plug shell adopts the following technical scheme:

[0007] The plug shell comprises a shielding sleeve, an installation cavity for installing a plug insulating inner core and a receiving cavity for mating with a mating socket are arranged in the shielding sleeve, the installation cavity and the receiving cavity are arranged in communication in the axial direction of the shielding sleeve, and an impedance adjusting body is arranged at the transition position of the installation cavity and the receiving cavity and extends along the radial direction of the shielding sleeve to be close to the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core during the mating, so that the part and the adjacent part thereof are matched in terms of characteristic impedance.

[0008] Beneficial effects: the improved plug shell is provided with the impedance adjusting body at the transition position of the installation cavity and the receiving cavity of the shielding sleeve, the plug shell needs to be connected with the ground during use, so that the potential of the impedance adjusting body is zero, and the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core is arranged close to the impedance adjusting body during the mating, so that the insulation distance between the part and the plug shell is relatively reduced, that is, the volume of air between the part and the plug shell is reduced, the adjustment of the characteristic impedance at the part is realized, so that the part and the adjacent part thereof are matched in terms of characteristic impedance, and the signal quality is ensured.

[0009] Further, the impedance adjusting body is an annular flange, and the inner hole of the annular flange is used for passing through the contact.

[0010] Beneficial effects: in this way, the insulation distance of the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core and the plug shell is reduced in the circumferential direction, and the adjustment effect of the characteristic impedance at the part is improved.

[0011] Further, the mating socket comprises a socket insulating inner core, and the radial dimension of the inner hole is greater than or equal to the radial dimension of the front end of the socket insulating inner core, so that the front end of the socket insulating inner core can extend into the inner hole during the mating.

[0012] Beneficial effects: in this way, the gap between the plug insulating inner core and the socket insulating inner core is reduced, the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core is reduced, and the variation of the characteristic impedance is reduced.

[0013] Further, the annular flange is integrally arranged in the inner part of the shielding sleeve.

[0014] Beneficial effects: the structure is simple and convenient for processing.

[0015] In the high-frequency high-speed connector, the following technical solutions are adopted:

[0016] The high-frequency high-speed connector comprises a plug and a socket, the plug comprises a plug shell, a plug insulating inner core and a plug contact, the plug shell comprises a shielding sleeve, an installation cavity for installing the plug insulating inner core and a receiving cavity for mating with the socket are arranged in the inside of the shielding sleeve, the installation cavity and the receiving cavity are arranged in communication in the axial direction of the shielding sleeve, an impedance adjusting body is arranged at the transition position of the installation cavity and the receiving cavity, the impedance adjusting body is arranged extending along the radial direction of the shielding sleeve, so as to be close to the part of the plug contact located at the interface between the plug insulating inner core and the socket insulating inner core during the mating, so that the part and the adjacent part of the plug contact are matched in terms of characteristic impedance.

[0017] Beneficial effects: the high-frequency high-speed connector of the application adopts an improved plug shell, the impedance adjusting body is arranged at the transition position of the installation cavity and the receiving cavity of the shielding sleeve of the plug shell, the plug shell needs to be connected with the ground during use, so that the potential of the impedance adjusting body is zero, and the part of the plug contact located at the interface between the plug insulating inner core and the socket insulating inner core is arranged close to the impedance adjusting body during the mating, so that the insulation distance between the part and the plug shell is reduced, that is, the volume of air between the part and the plug shell is reduced, the characteristic impedance of the part is adjusted, so that the part and the adjacent part of the plug contact are matched in terms of characteristic impedance, and the signal quality is ensured.

[0018] Further, the impedance adjusting body is an annular flange, and the inner hole of the annular flange is used for passing through the contact.

[0019] Beneficial effects: in this way, the insulation distance between the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core and the plug shell is reduced in the circumferential direction, and the adjustment effect of the characteristic impedance of the part is improved.

[0020] Further, the socket comprises a socket insulating inner core, and the radial dimension of the inner hole is greater than or equal to the radial dimension of the front end of the socket insulating inner core, so that the front end of the socket insulating inner core can extend into the inner hole during the mating.

[0021] Beneficial effects: in this way, the gap between the plug insulating inner core and the socket insulating inner core is reduced, the part of the contact located at the interface between the plug insulating inner core and the socket insulating inner core is reduced, and the variation of the characteristic impedance is reduced.

[0022] Further, the annular flange is integrally arranged in the inside of the shielding sleeve.

[0023] Beneficial effects: simple structure, convenient processing.

[0024] Further, the plug insulating inner core is provided with impedance adjustment bosses on the outer circumferential surface, the impedance adjustment bosses are arranged along the extension direction of the contact mounting hole and are arranged at intervals in the circumferential direction of the insulating inner core, so as to adjust the characteristic impedance at the corresponding position.

[0025] Beneficial effects: In this way, the characteristic impedance on the contact can be matched, thereby improving the signal quality.

[0026] Further, the plug insulating inner core comprises a main body part and a small-diameter section connected to the rear end of the main body part, the rear end of the small-diameter section is provided with an annular baffle, and the annular baffle and the transition surface between the main body part and the small-diameter section are arranged in opposition, so as to form an impedance adjustment groove in the circumferential direction of the plug insulating inner core, and the impedance adjustment groove is used to adjust the characteristic impedance at the corresponding position.

[0027] Beneficial effects: In this way, the characteristic impedance on the contact can be matched, thereby improving the signal quality. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a partial sectional view of the high-frequency high-speed connector provided by the present application;

[0029] Figure 2 is Figure 1 is a structural schematic view of the plug shell in

[0030] Figure 3 is Figure 3 is a sectional view of

[0031] Figure 4 is Figure 3 is an axial projection view of the annular flange in

[0032] Figure 5 is Figure 1 is a structural schematic view of the plug insulating inner core in the first perspective view;

[0033] Figure 6 is Figure 1 is a structural schematic view of the plug insulating inner core in the second perspective view;

[0034] Figure 7 is Figure 5 is a top view of

[0035] Figure 8 is Figure 1 is a structural schematic view of the plug contact in

[0036] Figure 9 is an assembly schematic view of the plastic shell and the plug shell;

[0037] Figure 10 is a structural schematic view of the plug;

[0038] Figure 11 is the projection of the annular flange in the axial direction of the shielding sleeve in other embodiments of the high-frequency high-speed connector of the present application Figure 1 ;

[0039] Figure 12 is the projection of the annular flange in the axial direction of the shielding sleeve in other embodiments of the high-frequency high-speed connector of the present application Figure 2 .

[0040] The names of the components corresponding to the corresponding reference numerals in the figures are as follows:

[0041] Figures 1 to 10 In the figures: 100, plug; 101, plug shell; 102, shell main body; 103, avoidance cavity; 104, shielding sleeve; 105, mounting cavity; 106, containing cavity; 107, plug insulating inner core; 108, contact mounting hole; 109, large aperture section; 110, small aperture section; 111, impedance adjustment groove; 112, impedance adjustment boss; 113, rib; 114, ring groove; 115, plug contact; 116, plug-in section; 117, mounting section; 118, first clamping boss; 119, second clamping boss; 120, positioning boss; 121, positioning groove; 122, plastic shell; 123, buckle; 124, assembly cavity; 125, rectangular port; 126, rectangular block; 127, annular flange; 128, inner hole; 129, exposed section; 130, annular baffle; 131, impedance adjustment groove; 132, main body portion; 133, small diameter section; 134, transition surface; 200, socket; 201, socket shell; 202, socket insulating inner core; 203, socket contact;

[0042] Figures 11 to 12 In the figures: 300, annular flange. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application, i.e., the described examples are only a part of the examples of the present application, but not all the examples. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application.

[0045] It should be noted that in the specific embodiments of the present application, the relationship terms such as "first" and "second" and the like that can occur are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between the entities or operations. Moreover, the terms such as "include", "contain" or any other variants that can occur are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. The limiting elements that can occur, such as "including a", do not exclude the presence of other identical elements in the process, method, article or device including the elements, without more limitations.

[0046] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" that can occur should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the description of the present application, unless otherwise explicitly specified and limited, the term "provided with" that can occur should be understood broadly, for example, the object "provided with" can be part of the body, or arranged separately from the body and connected to the body, and the connection can be detachable connection or non-detachable connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] The present application is further described in detail below in combination with the embodiments.

[0049] Embodiment 1 of high-frequency high-speed connector in the present application:

[0050] As shown in Figure 1 , the high-frequency high-speed connector includes a plug 100 and a socket 200, the plug 100 includes a plug shell 101, a plug insulating inner core 107 and a plug contact 115, the socket 200 includes a socket shell 201, a socket insulating inner core 202 and a socket contact 203, and when the plug 100 and the socket 200 are plugged together, the transmission of the signal is realized by the plug contact 115 and the socket 200 contact plug-in cooperation.

[0051] In this embodiment, as shown in Figure 2 and Figure 3As shown, the plug shell 101 comprises a shell body 102 and a shielding sleeve 104, the shielding sleeve 104 is internally provided with a mounting cavity 105 for mounting the plug insulating inner core 107 and a receiving cavity 106 for mating with the socket 200, the mounting cavity 105 and the receiving cavity 106 are both cylindrical and arranged in communication in the front-rear direction. In addition, the plug shell 101 is also provided with an avoiding cavity 103 for avoiding the plug contact 115.

[0052] In the embodiment, as shown in Figure 3 , the mounting cavity 105 and the receiving cavity 106 are provided with an impedance adjusting body at the transition position, the impedance adjusting body is an annular flange 127, as shown in Figure 4 , the projection of the annular flange 127 in the axial direction of the shielding sleeve 104 is a circular ring, the inner hole 128 on the annular flange 127 is used for the plug contact 115 to pass through, and the annular flange 127 is integrally provided with the shielding sleeve 104 for convenient processing.

[0053] In the embodiment, as shown in Figure 5 , Figure 6 and Figure 7 , the plug insulating inner core 107 is a cylindrical structure as a whole, the plug contact 115 is provided with a contact mounting hole 108 extending in the front-rear direction. The plug insulating inner core 107 comprises a main body part 132 and a small-diameter section 133, the small-diameter section 133 is connected to the rear end of the main body part 132, and the outer circumferential surfaces of the main body part 132 and the small-diameter section 133 are both provided with impedance adjusting bosses 112 extending in the extension direction of the contact mounting hole 108 for adjusting the characteristic impedance at the corresponding positions respectively. As shown in Figure 5 , Figure 6 and Figure 7 , in the circumferential direction of the plug insulating inner core 107, four impedance adjusting bosses 112 are uniformly and spacedly arranged on the outer circumferential surface of the main body part 132, and two impedance adjusting bosses 112 are uniformly and spacedly arranged on the outer circumferential surface of the small-diameter section 133, the impedance adjusting bosses 112 on the small-diameter section 133 are integrally connected with the corresponding impedance adjusting bosses 112 on the outer circumferential surface of the main body part 132, and the width of the impedance adjusting bosses 112 on the outer circumferential surface of the small-diameter section 133 is smaller than the width of the impedance adjusting bosses 112 on the outer circumferential surface of the main body part 132.

[0054] In the embodiment, as shown in Figure 5 and Figure 6 , the rear end of the small-diameter section 133 is provided with an annular baffle 130, and the annular baffle 130 and the transition surface 134 between the main body part 132 and the small-diameter section 133 are arranged in opposition to each other to enclose an impedance adjusting groove 131 in the circumferential direction of the plug insulating inner core 107 for adjusting the characteristic impedance at the corresponding position.

[0055] In the embodiment, asFigure 5 and Figure 6 As shown in

[0056] In this embodiment, as shown in Figure 5 and Figure 6 The contact mounting hole 108 is a rectangular hole for forming a rotation-stopping fit with the plug contact 115. The contact mounting hole 108 includes a large-diameter section 109 and a small-diameter section 110, and an annular step is formed between the large-diameter section 109 and the small-diameter section 110 for positioning the plug contact 115 when the plug contact 115 is installed. In addition, as shown in Figure 6 and Figure 7 An impedance-adjusting groove 111 is provided on the hole wall of the contact mounting hole 108. The impedance-adjusting groove 111 is a rectangular groove for facilitating machining and is provided at the hole wall of the large-diameter section 109 to adjust the characteristic impedance of the contact part in the large-diameter section 109. As shown in Figure 6 The impedance-adjusting groove 111 is arranged in the same direction as the extension direction of the contact mounting hole 108 and along the circumferential direction of the contact mounting hole 108, and two impedance-adjusting grooves 111 are provided on two oppositely arranged hole walls of the large-diameter section 109.

[0057] In this embodiment, as shown in Figure 8 The plug contact 115 is divided into a plug-in section 116, a mounting section 117 and an exposed section 129 along the front-rear direction. The mounting section 117 is a rod-shaped structure with a rectangular cross section, and a set of clamping bosses is installed on the top surface and the bottom surface of the mounting section 117 respectively. Each set of clamping bosses includes a first clamping boss 118 and a second clamping boss 119, and the first and second clamping bosses 119 are arranged in the front-rear direction. In addition, a positioning boss 120 and a positioning groove 121 are provided on the two side surfaces of the mounting section 117 to prevent the plug contact 115 from being deflected in the contact mounting hole 108.

[0058] In this embodiment, the assembly process of the plug 100 is as follows: first, the plug contact 115 is installed on the plug insulating inner core 107, as shown in Figure 10As shown, the plug contact 115 is inserted into the contact mounting hole 108 through the mounting section 117, the mounting section 117 forms a rotation-stopping fit with the contact mounting hole 108, the first clamping boss 118 on the mounting section 117 is clamped and fixed in the small hole section 110, the second clamping boss 119 is clamped in the impedance adjustment groove 111 of the large hole section 109 and forms an interference fit with the corresponding hole section respectively. During the installation process, the positioning of the plug contact 115 in the contact mounting hole 108 is achieved by forming a stop fit between the front end face of the mounting section 117 and the annular step in the front and rear direction. The front end of the contact mounting hole 108 is adapted to the plug-in end of the plug contact 115 (i.e. the front end of the plug contact 115), so that the plug-in section 116 is arranged outside the contact mounting hole 108 by the front end of the contact mounting hole 108. The exposed section 129 is arranged outside the contact mounting hole 108 by the rear end of the contact mounting hole 108. Then the installed plug contact 115 and the plug insulating inner core 107 are installed in the installation cavity 105, the rib 113 on the plug insulating inner core 107 forms an interference fit with the wall surface of the installation cavity 105, the front end face of the plug insulating inner core 107 is tightly pressed against one side of the annular flange 127, the plug-in section 116 on the plug contact 115 passes through the inner hole 128 of the annular flange 127 and extends into the accommodating cavity 106 to be plugged with the socket contact 203, and the exposed section 129 on the plug contact 115 extends into the avoiding cavity 103.

[0059] In this embodiment, as shown in Figure 9 The plug 100 further includes a plastic shell 122, the plastic shell 122 is provided with a buckle 123, so as to cooperate with the clamping structure on the socket shell 201 when the plug 100 is plugged with the socket 200, thereby fixing the plug 100 and the socket 200 together. The plastic shell 122 is further provided with an assembly cavity 124 for mounting the plug shell 101, a rectangular port 125 is formed at the rear end of the assembly cavity 124, a rectangular block 126 adapted to the rectangular port 125 is provided on the plug shell 101, a clamping groove for clamping and fixing the rectangular port 125 is provided on the side surface of the top of the rectangular block 126, and a fixing structure for clamping and fixing the clamping groove is provided at the four inner side surfaces of the rectangular port 125. When the plastic shell 122 is installed, the position of the buckle 123 in the circumferential direction can be adjusted by clamping and fixing the rectangular port 125 in different ways.

[0060] In this embodiment, when the plug 100 and the socket 200 are plugged, as shown in Figure 1As shown, the plug-in section 116 is in plug-in cooperation with the socket contact 203, and the hole wall surface of the inner hole 128 of the annular flange 127 is arranged close to the part of the plug-in section 116 located at the interface between the plug insulating inner core 107 and the socket insulating inner core 202, which relatively reduces the insulation distance between the part and the plug housing 101, i.e. reduces the volume of air between the part and the plug housing 101, and adjusts the characteristic impedance of the part, so that the characteristic impedance of the part and the adjacent part is matched, and the signal quality is improved.

[0061] In the embodiment, the radial dimension of the inner hole 128 of the annular flange 127 is greater than the radial dimension of the front end of the socket insulating inner core 202, and when in plug-in cooperation, the front end of the socket insulating inner core 202 extends into the inner hole 128 of the annular flange 127, which reduces the part of the plug-in section 116 located at the interface between the plug insulating inner core 107 and the socket insulating inner core 202, thereby reducing the change amount of the characteristic impedance of the part.

[0062] In other embodiments of the high-frequency high-speed connector, two impedance adjustment bosses are arranged on the outer periphery of the main body part and the small-diameter section. Alternatively, three impedance adjustment bosses are arranged on the outer periphery of the main body part, and four impedance adjustment bosses are arranged on the outer periphery of the small-diameter section. Of course, the outer periphery of the main body part and the small-diameter section can also not be provided with impedance adjustment bosses.

[0063] In other embodiments of the high-frequency high-speed connector, the plug insulating inner core does not include a small-diameter section, and the plug insulating inner core is a cylindrical structure with equal diameters.

[0064] In other embodiments of the high-frequency high-speed connector, the hole wall of the contact mounting hole is not provided with an impedance adjustment groove, and the second clamping boss on the mounting section is in interference fit with the hole wall of the large-diameter section.

[0065] In other embodiments of the high-frequency high-speed connector, the annular flange is welded and fixed inside the shielding sleeve.

[0066] In other embodiments of the high-frequency high-speed connector, the radial dimension of the inner hole of the annular flange is equal to the radial dimension of the front end of the socket insulating inner core, and when in plug-in cooperation, the front end of the socket insulating inner core can still extend into the inner hole of the annular flange, at which time the plug-in feeling will be affected, but the normal use is not affected. Alternatively, the radial dimension of the inner hole of the annular flange is less than the radial dimension of the front end of the socket insulating inner core, and when in plug-in cooperation, the front end of the socket insulating inner core can still not extend into the inner hole of the annular flange.

[0067] In other embodiments of the high-frequency high-speed connector, the impedance adjustment body is a bump, and one bump is arranged at the transition position between the mounting cavity and the accommodating cavity. Alternatively, the impedance adjustment body is a bump, and two bumps are arranged at the transition position between the mounting cavity and the accommodating cavity, and each bump is arranged along the circumference of the shielding sleeve. Of course, the number of bumps can be increased as needed, for example, the number of bumps is five.

[0068] In other embodiments of the high-frequency high-speed connector, when the high-frequency high-speed connector has two or more plug contacts, as shown in Figure 11 The projection of the annular flange 300 in the axial direction of the shielding sleeve is a rectangular ring. Alternatively, as shown in Figure 12 The projection of the annular flange 300 in the axial direction of the shielding sleeve is a circularly rectangular ring structure. Alternatively, it can also be elliptical or gourd-shaped, and of course it can also be other shapes, which will not be described here.

[0069] Embodiment 1 of the plug shell in the present application:

[0070] The specific structure of the plug shell in this embodiment adopts the structure of the plug shell in any embodiment of the high-frequency high-speed connector.

[0071] The above is only the preferred embodiment of the present application, and is not used to limit the present application. The patent protection scope of the present application is subject to the claims, and any equivalent structural changes made by applying the contents of the specification and drawings of the present application shall also be included in the protection scope of the present application.

Claims

1. A plug comprising a plug housing, a plug insulating inner core and plug contact members inserted in the plug insulating inner core, the plug housing comprising a shield sleeve, an installation cavity for installing the plug insulating inner core and a receiving cavity for mating with a mating socket being arranged in communication with each other in an axial direction of the shield sleeve, characterized in that, An impedance adjusting body is arranged at the transition position between the mounting cavity and the accommodating cavity, and is a ring-shaped flange, an inner hole of the ring-shaped flange is for the contact to pass through, the front end surface of the plug insulating inner core is stopped on the axial rear ring surface of the ring-shaped flange, and an annular space for the socket insulating inner core to be inserted is formed between the plug contact and the inner hole wall of the ring-shaped flange, the ring-shaped flange is arranged along the radial extension of the shielding sleeve, so as to be close to the part of the plug contact at the interface between the plug insulating inner core and the socket insulating inner core during the plug-in cooperation, so that the part and the part adjacent thereto are matched in characteristic impedance.

2. The plug of claim 1, wherein, The outer peripheral surface of the plug insulating inner core is provided with an impedance adjusting boss, the impedance adjusting boss is arranged along the extension direction of the plug contact and is spaced apart in the circumferential direction of the insulating inner core, and at least two are arranged for adjusting the characteristic impedance at the corresponding positions; the plug insulating inner core comprises a main body portion and a small-diameter section connected to the rear end of the main body portion, and the rear end of the small-diameter section is provided with a ring-shaped baffle, and the transition surface between the ring-shaped baffle and the main body portion and the small-diameter section is arranged opposite, so as to form an impedance adjusting groove in the circumferential direction of the plug insulating inner core, and the impedance adjusting groove is used for adjusting the characteristic impedance at the corresponding positions.

3. The plug of claim 2, wherein, The adapter socket comprises a socket insulating inner core, and the radial dimension of the inner hole is greater than or equal to the radial dimension of the front end of the socket insulating inner core, so that the front end of the socket insulating inner core is inserted during the plug-in cooperation.

4. The plug of claim 2, wherein, The ring-shaped flange is integrally arranged in the inside of the shielding sleeve.

5. A high-frequency high-speed connector comprising a plug and a socket, the plug comprising a plug housing, a plug insulating inner core and plug contact members mounted in the plug insulating inner core, the plug housing comprising a shield sleeve, an installation cavity for mounting the plug insulating inner core and a receiving cavity for mating with the socket being arranged in communication with each other in an axial direction of the shield sleeve, characterized in that, An impedance adjusting body is arranged at the transition position between the mounting cavity and the accommodating cavity, and is a ring-shaped flange, an inner hole of the ring-shaped flange is for the contact to pass through, the front end surface of the plug insulating inner core is stopped on the axial rear ring surface of the ring-shaped flange, and an annular space for the socket insulating inner core to be inserted is formed between the plug contact and the inner hole wall of the ring-shaped flange, the ring-shaped flange is arranged along the radial extension of the shielding sleeve, so as to be close to the part of the plug contact at the interface between the plug insulating inner core and the socket insulating inner core during the plug-in cooperation, so that the part and the part adjacent thereto are matched in characteristic impedance.

6. The high-frequency, high-speed connector of claim 5, wherein, The outer peripheral surface of the plug insulating inner core is provided with an impedance adjusting boss, the impedance adjusting boss is arranged along the extension direction of the plug contact and is spaced apart in the circumferential direction of the insulating inner core, and at least two are arranged for adjusting the characteristic impedance at the corresponding positions; the plug insulating inner core comprises a main body portion and a small-diameter section connected to the rear end of the main body portion, and the rear end of the small-diameter section is provided with a ring-shaped baffle, and the transition surface between the ring-shaped baffle and the main body portion and the small-diameter section is arranged opposite, so as to form an impedance adjusting groove in the circumferential direction of the plug insulating inner core, and the impedance adjusting groove is used for adjusting the characteristic impedance at the corresponding positions.

7. The high-frequency, high-speed connector of claim 5, wherein, The adapter socket comprises a socket insulating inner core, and the radial dimension of the inner hole is greater than or equal to the radial dimension of the front end of the socket insulating inner core, so that the front end of the socket insulating inner core is inserted during the plug-in cooperation.

8. The high-frequency, high-speed connector of claim 5, wherein, The ring-shaped flange is integrally arranged in the inside of the shielding sleeve.

9. The high-frequency, high-speed connector of claim 6, wherein, The plug insulating inner core is provided with a contact mounting hole for mounting the plug contact, the contact mounting hole comprises a large aperture section and a small aperture section, an annular step is formed between the large aperture section and the small aperture section, the annular step is used for positioning the plug contact when the plug contact is mounted, and an impedance adjusting groove is arranged on the hole wall of the large aperture section of the contact mounting hole, the impedance adjusting groove is consistent with the extension direction of the contact mounting hole, so as to adjust the characteristic impedance of the contact part in the large aperture section.

10. The high-frequency, high-speed connector of claim 9, wherein, The contact mounting hole is a rectangular hole, the plug contact is divided into a plug-in section, a mounting section and an exposed section along the front-rear direction, the mounting section is a rod-shaped structure with a rectangular cross section and is mounted in the rectangular hole; the top surface and the bottom surface of the mounting section are respectively provided with a set of clamping bosses, each set of clamping bosses comprises a first clamping boss and a second clamping boss, the first and second clamping bosses are arranged in the front-rear direction, and the two side surfaces of the mounting section are further provided with a positioning boss and a positioning groove, so as to prevent the plug contact from being deflected in the contact mounting hole.

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