CN115133350A

CN115133350A - Insulating inner core and high-frequency high-speed connector

Info

Publication number: CN115133350A
Application number: CN202210863148.2A
Authority: CN
Inventors: 罗京伟; 郑文杰; 张启帆; 韩见强; 郭辉; 张晓辉
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-09-30

Abstract

The invention provides an insulating inner core and a high-frequency high-speed connector, wherein the high-frequency high-speed connector comprises the insulating inner core, a contact mounting hole is formed in the insulating inner core, the front end of the insulating inner core corresponds to a plug-in end of a matched contact, a plug-in structure is arranged at the front end face of the insulating inner core around the front end of the contact mounting hole and used for being plugged in a plug-in matching structure on the matched insulating inner core, so that the part, located at the interface between the insulating inner core and the matched insulating inner core, of the contact is covered under the plug-in state, and the characteristic impedance of the part is matched with the characteristic impedance of the adjacent part of the contact. The insulating inner core provided by the invention can effectively solve the technical problem that the characteristic impedance on the plugging section is changed violently due to the gap between the plug insulating inner core and the socket insulating inner core in the plugging matching process of the high-frequency high-speed connector in the prior art.

Description

Insulating inner core and high-frequency high-speed connector

Technical Field

The invention relates to an insulating inner core and a high-frequency high-speed connector, and belongs to the technical field of connectors.

Background

The existing high-frequency high-speed connector comprises a plug and a socket, wherein the plug comprises a plug shell, a plug insulating inner core and a plug contact element, the socket comprises a socket shell, a socket insulating inner core and a socket contact element, the plug shell is provided with a mounting cavity for mounting the plug insulating inner core and an accommodating cavity for matching with a matching socket in an opposite insertion manner, the plug insulating inner core is provided with a contact element mounting hole, the plug contact element comprises an insertion section, the plug contact element is mounted in the contact element mounting hole, and the insertion section on the plug contact element extends out of the accommodating cavity through the front end of the contact element mounting hole; the socket insulating inner core is provided with a contact fitting hole, and the socket contact is arranged on the socket insulating shell through the socket insulating inner core; when the plug is matched, the plug section of the plug contact element is matched with the socket contact element in the accommodating cavity in a plug-in mode.

In order to ensure the transmission quality and the transmission rate of signals, the high-frequency high-speed connector needs to have stable characteristic impedance with small fluctuation, and therefore the plug insulating inner core and the socket insulating inner core can be attached without gaps in the process of plug-in matching, so that the corresponding insulating inner cores can wrap the plug contact and the socket contact in the extending direction of the plug contact and the socket contact, and the characteristic impedance of the plug contact and the socket contact in the extending direction can be matched.

However, in the design process of the high-frequency high-speed connector, due to the machining tolerance of each part and tolerance accumulation caused by mutual matching, a gap exists between the plug insulating inner core and the socket insulating inner core when the plug insulating inner core and the socket insulating inner core are in mutual insertion matching; in the field of automobiles, the high-frequency high-speed connector usually adopts a straight elastic buckle locking structure which can be quickly plugged and pulled, and the gap of the section can reach about 0.1-1 mm for ensuring that the locking structure can be smoothly rebounded and fixed in place. The medium between the part corresponding to the gap on the plugging section and the metal shell becomes air, and the dielectric constant of the insulating inner core is far greater than that of the air, so that the characteristic impedance of the part corresponding to the gap on the plugging section can be changed violently, and the signal quality is influenced.

Disclosure of Invention

The invention aims to provide an insulating inner core, which aims to solve the technical problem that the characteristic impedance on a plugging section is changed violently due to the gap between a plug insulating inner core and a socket insulating inner core in the plugging matching process of a high-frequency high-speed connector in the prior art. Meanwhile, the invention also provides a high-frequency high-speed connector to solve the problems.

The insulating inner core adopts the following technical scheme:

the insulating inner core is provided with a contact mounting hole, the front end of the insulating inner core corresponds to the plug-in end of the adaptive contact, the front end face of the insulating inner core is provided with a plug-in structure around the front end of the contact mounting hole, and the plug-in structure is used for being plugged with the plug-in matching structure on the adaptive insulating inner core so as to cover the part of the contact, which is positioned at the interface between the insulating inner core and the adaptive insulating inner core, in the plug-in state, and enable the characteristic impedance of the part to be matched with the characteristic impedance of the adjacent part.

Has the advantages that: the invention provides an improved insulating inner core, when the insulating inner core is in opposite insertion fit with an adaptive insulating inner core, an insertion fit structure of the adaptive insulating inner core is in insertion fit with an insertion fit structure so as to cover the part of a contact element, which is positioned at the interface between the insulating inner core and the adaptive insulating inner core, so that the insertion fit structure or the insertion fit structure forms an insulating medium between the contact element and a metal shell, and the characteristic impedance of the part is adjusted because the dielectric constant of the insertion fit structure and the insertion fit structure is greater than that of air; meanwhile, the plugging structure and the plugging matching structure are matched to cover the part, the volume between the part and the shell is occupied, the volume of air between the part and the shell is reduced, the part is matched with the characteristic impedance of the adjacent part, and the condition that the characteristic impedance of the corresponding position on the plugging section is changed violently due to the fact that a gap exists between the two insulating inner cores in the opposite plugging matching process is avoided.

Furthermore, the inserting structure and the inserting matching structure are in circumferential clearance fit when being inserted.

Has the advantages that: the arrangement can ensure that the plugging structure can keep better plugging hand feeling when being plugged with the plugging matching structure.

Furthermore, an annular inner cavity is integrally formed at the front end face of the insulating inner core, and the annular inner cavity forms the plug-in structure.

Has the advantages that: simple structure and easy processing.

Furthermore, an annular bulge is integrally formed at the front end face of the insulating inner core, and the annular bulge forms the inserting structure.

Has the advantages that: simple structure and easy processing.

Further, the outer peripheral surface of the insulating inner core is provided with impedance adjusting bosses, the impedance adjusting bosses extend along the extending direction of the contact mounting hole and are arranged at intervals in the circumferential direction of the insulating inner core, and the impedance adjusting bosses are used for adjusting the characteristic impedance at corresponding positions.

Has the advantages that: this arrangement allows the characteristic impedance at the contact to be more matched, thereby improving signal quality.

Furthermore, the top surface of the boss is provided with a convex rib for forming interference fit with the shell.

Has the advantages that: the arrangement can enable the position of the insulating inner core to be more stable, and therefore stability of the connector is improved.

Further, the outer peripheral surface of the insulating inner core is provided with a ring groove for adjusting the characteristic impedance at the corresponding position.

Further, the contact mounting hole is a rectangular hole for matching with a mounting section with a rectangular upper cross section on the mating contact.

Has the beneficial effects that: the arrangement can ensure that the contact mounting hole and the mounting section of the contact form rotation stopping fit, so that the position of the contact is more stable, and the stability of the connector is improved.

Furthermore, an impedance adjusting groove is formed in the hole wall of the contact mounting hole and arranged along the extending direction of the contact mounting hole so as to adjust the characteristic impedance at the corresponding position.

The high-frequency high-speed connector adopts the following technical scheme:

the high-frequency high-speed connector comprises an insulating inner core, wherein a contact mounting hole is formed in the insulating inner core, the front end of the insulating inner core corresponds to a plug-in end of a matched contact, a plug-in structure is arranged at the front end face of the insulating inner core around the front end of the contact mounting hole and used for being plugged in a plug-in matching structure on the matched insulating inner core, so that the part, located at the interface between the insulating inner core and the matched insulating inner core, of the contact is covered under the plug-in state, and the characteristic impedance of the part is matched with the characteristic impedance of the adjacent part of the contact.

Has the advantages that: the invention provides a high-frequency high-speed connector, which adopts an improved insulating inner core, when the insulating inner core is in opposite insertion fit with an adaptive insulating inner core, an insertion fit structure of the adaptive insulating inner core is in insertion fit with an insertion fit structure so as to cover the part of a contact element, which is positioned at the interface between the insulating inner core and the adaptive insulating inner core, so that the insertion fit structure or the insertion fit structure forms an insulating medium between the contact element and a metal shell, and the characteristic impedance of the part is adjusted because the dielectric constant of the insertion fit structure and the insertion fit structure is greater than that of air; meanwhile, the part is covered by the plug-in structure and the plug-in matching structure in a matching mode, the volume between the part and the shell is occupied, the volume of air between the part and the shell is reduced, the part is matched with the characteristic impedance of the adjacent part, and the condition that the characteristic impedance of the corresponding position on the plug-in section is changed violently due to the fact that a gap exists between the two insulating inner cores in the opposite plug-in matching process is avoided.

Has the beneficial effects that: simple structure and easy processing.

Furthermore, an annular bulge is integrally formed on the front end face of the insulating inner core, and the annular bulge forms the plug-in structure.

Has the beneficial effects that: simple structure and easy processing.

Has the beneficial effects that: the arrangement can enable the position of the insulating inner core to be more stable, and therefore stability of the connector is improved.

Has the advantages that: this arrangement allows the characteristic impedances on the contacts to be more matched, thereby improving signal quality.

Further, an impedance adjusting groove is formed in the hole wall of the contact mounting hole and arranged along the extending direction of the contact mounting hole, so that characteristic impedance at the corresponding position can be adjusted.

Drawings

FIG. 1 is a partial cross-sectional view of a high frequency, high speed connector provided by the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic structural view of the plug housing of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a schematic view of the insulating core of the plug of FIG. 1 from a first perspective;

FIG. 6 is a schematic view of the insulating core of the plug of FIG. 1 from a second perspective;

FIG. 7 is a cross-sectional view of FIG. 5;

FIG. 8 is a schematic view of the structure of the plug contact of FIG. 1;

FIG. 9 is a schematic view of the assembly of the plastic housing and the plug housing;

fig. 10 is a schematic view of the structure of the plug.

The names of the components corresponding to the corresponding reference numerals in the drawings are:

100. a plug; 101. a plug housing; 102. a housing main body; 103. an avoidance cavity; 104. a shielding sleeve; 105. a mounting cavity; 106. an accommodating chamber; 107. an insulating inner core of the plug; 108. a contact mounting hole; 109. a large pore diameter section; 110. a small bore section; 111. an impedance adjusting slot; 112. an impedance adjusting boss; 113. a rib is protruded; 114. a ring groove; 115. a plug contact; 116. a plug section; 117. an installation section; 118. a first clamping boss; 119. a second clamping boss; 120. positioning the boss; 121. a positioning groove; 122. a plastic shell; 123. buckling; 124. an assembly chamber; 125. a rectangular opening; 126. a rectangular block; 127. an annular inner cavity; 128. exposing the section; 200. a socket; 201. a socket housing; 202. an insulated inner core of the socket; 203. a socket contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is to be noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the terms of the first and second, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

The present invention will be described in further detail with reference to examples.

Example 1 of the high-frequency high-speed connector of the invention:

as shown in fig. 1, the high-frequency high-speed connector includes a plug 100 and a receptacle 200, the plug 100 includes a plug housing 101, a plug insulating core 107 and plug contacts 115, and the receptacle 200 includes a receptacle housing 201, a receptacle insulating core 202 and receptacle contacts 203, and when the plug 100 is mated with the receptacle 200, signal transmission is realized by the mating of the plug contacts 115 and the receptacle contacts 203.

In this embodiment, as shown in fig. 3 and 4, the plug housing 101 includes a housing main body 102 and a shielding sleeve 104, a mounting cavity 105 for mounting the plug insulating core 107 and an accommodating cavity 106 for mating with the plug receptacle 200 are provided inside the shielding sleeve 104, and the mounting cavity 105 and the accommodating cavity 106 are both cylindrical in shape and are arranged in a front-rear direction in a communicating manner. In addition, the plug housing 101 is provided with an escape cavity 103 for escaping the plug contact 115.

In this embodiment, as shown in fig. 5 and 6, the plug insulating core 107 has a sleeve-like structure as a whole, and the plug contact 115 is provided with a contact mounting hole 108, and the contact mounting hole 108 extends in the front-rear direction. As shown in fig. 5 and 7, an annular inner cavity 127 is integrally formed at the front end face of the plug insulating inner core 107, the section of the annular inner cavity 127 is circular, and the annular inner cavity 127 is disposed around the front end of the contact mounting hole 108 and forms an insertion structure for being inserted into the insertion mating structure (i.e., the front end of the receptacle insulating inner core 202) during the insertion mating.

In the present embodiment, as shown in fig. 5 and 6, the plug insulating core 107 is provided on its outer circumferential surface with impedance adjusting bosses 112, and the impedance adjusting bosses 112 are arranged to extend in the extending direction of the contact mounting hole 108 and four in the circumferential direction of the insulating core at regular intervals for adjusting the characteristic impedance at the corresponding positions. As shown in fig. 5 and 6, the top surface of the impedance adjusting boss 112 is further provided with a rib 113 for interference fit with the side wall of the mounting cavity 105 when the plug insulating core 107 is installed in the mounting cavity 105. In addition, an annular groove 114 is further provided on the outer circumferential surface of the plug insulating core 107, and the annular groove 114 is located at the front side of the impedance adjusting boss 112 for adjusting the characteristic impedance at the corresponding position.

In the present embodiment, as shown in fig. 5 and 6, the contact mounting hole 108 is a rectangular hole. As shown in fig. 7, the contact mounting hole 108 includes a large-aperture section 109 and a small-aperture section 110, and an annular step is formed between the large-aperture section 109 and the small-aperture section 110 for positioning the plug contacts 115 when the plug contacts 115 are mounted. In addition, as shown in fig. 6 and 7, the hole wall of the contact mounting hole 108 is provided with an impedance adjusting groove 111, and for the convenience of processing, the impedance adjusting groove 111 is a rectangular groove, and is specifically provided at the hole wall of the large-diameter section 109, so as to adjust the characteristic impedance of the contact part in the large-diameter section 109. As shown in fig. 6, two impedance adjusting grooves 111 are arranged along the circumferential direction of the contact mounting hole 108 in the same direction as the extending direction of the contact mounting hole 108, and the two impedance adjusting grooves 111 are respectively arranged on two oppositely arranged hole wall surfaces on the large-diameter section 109.

In this embodiment, as shown in fig. 8, the plug contact 115 is divided into an insertion section 116, an installation section 117, and an exposed section 128 along the front-back direction, the installation section 117 is a rod-shaped structure with a rectangular cross section, a set of clamping bosses are respectively installed on the top surface and the bottom surface of the installation section 117, each set of clamping bosses includes a first clamping boss 118 and a second clamping boss 119, and the first and second clamping bosses are arranged at intervals along the front-back direction. In addition, positioning bosses 120 and positioning grooves 121 are provided on both side surfaces of the mounting section 117 to prevent the plug contacts 115 from wobbling in the contact mounting holes 108.

In this embodiment, the assembly process of the plug 100 is as follows: firstly, the plug contact 115 is installed on the plug insulating inner core 107, as shown in fig. 10, the plug contact 115 is inserted into the contact installation hole 108 through the installation section 117, the installation section 117 and the contact installation hole 108 form a rotation stopping fit, the first clamping boss 118 on the installation section 117 is clamped and fixed in the small-aperture section 110, and the second clamping boss 119 is clamped in the large-aperture section 109 and is in interference fit with two opposite hole wall surfaces of the large-aperture section 109, which are not provided with the impedance adjusting slot 111. During the mounting process, the positioning of the plug contact 115 in the contact mounting hole 108 is achieved by the front end surface of the mounting section 117 forming a stop fit with the annular step in the front-rear direction. The front end of the contact mounting hole 108 is fitted with the plug end of the plug contact 115 (i.e., the front end of the plug contact 115) so that the plug section 116 is arranged to protrude from the front end of the contact mounting hole 108 out of the contact mounting hole 108. The exposed section 128 is disposed to extend from the rear end of the contact mounting hole 108 out of the contact mounting hole 108. The installed plug contact 115 and the plug insulating inner core 107 are then installed in the installation cavity 105, and the ribs 113 on the plug insulating inner core 107 are in interference fit with the wall surface of the installation cavity 105. The plug sections 116 of the plug contacts 115 project into the receiving chambers 106 and are arranged to be plugged into the receptacle contacts 203, while the exposed sections 128 of the plug contacts 115 project into the relief chambers 103.

In this embodiment, as shown in fig. 9, the plug 100 further includes a plastic housing 122, and a buckle 123 is disposed on the plastic housing 122 to cooperate with a buckling structure on the socket housing 201 when the plug 100 and the socket 200 are mated, so as to fix the plug 100 and the socket 200 together. Still be equipped with assembly chamber 124 on plastic casing 122, for be used for installing plug housing 101, rectangular port 125 has been seted up to the rear end of assembly chamber 124, be equipped with the rectangular block 126 with rectangular port 125 adaptation on the plug housing 101, be equipped with on the side at rectangular block 126 top and be used for rectangular port 125 to clamp the fixed draw-in groove, four medial surfaces departments of rectangular port 125 all are equipped with and clamp the fixed knot structure with the draw-in groove, when installing plastic casing 122, can adjust buckle 123 position at the ascending circumference through the mode that makes the different medial surfaces of rectangular port 125 clamp fixedly with the draw-in groove.

In this embodiment, when the plug 100 and the socket 200 are mated, as shown in fig. 2, the plug section 116 is mated with the socket contact 203, and the annular cavity 127 is mated with the front end of the socket insulating core 202 to cover the portion of the contact located at the interface between the plug insulating core 107 and the socket insulating core 202 (hereinafter referred to as interface portion), so as to reduce the volume of air surrounding the portion. Meanwhile, the dielectric constant of the annular cavity 127 is larger than that of air, so that the characteristic impedance of the interface part is adjusted, the characteristic impedance of the interface part is matched with that of the adjacent part, and the signal quality is ensured.

In this embodiment, in order to ensure that the front ends of the annular inner cavity 127 and the socket insulating inner core 202 can maintain a good plugging hand feeling when being plugged, the annular inner cavity 127 and the front end of the socket insulating inner core 202 are in clearance fit in the circumferential direction when being plugged.

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

In other embodiments of the high frequency high speed connector, the contact mounting hole is an elliptical hole, the cross section of the mounting section on the plug contact is elliptical, and the plug contact and the contact mounting hole form a rotation stop fit. Or the contact mounting hole is a circular hole, the cross section of the mounting section on the plug contact is circular, and the mounting section and the contact mounting hole are in interference fit.

In other embodiments of the high frequency, high speed connector, the plug insulating core is not provided with a circumferential groove on its outer circumferential surface.

In other embodiments of the high-frequency high-speed connector, the top surface of the impedance adjusting boss is not provided with a convex rib, and the insulating inner core is in interference fit with the wall surface of the mounting cavity directly through the top surface of the impedance adjusting boss.

In another embodiment of the high-frequency high-speed connector, the outer circumferential surface of the insulating core is provided with two impedance adjusting bosses, and the two impedance adjusting bosses extend along the extending direction of the contact mounting hole and are arranged at intervals in the circumferential direction of the insulating core. Or the peripheral surface of the insulating inner core is not provided with an impedance adjusting lug boss.

In other embodiments of the high-frequency high-speed connector, when the high-frequency high-speed connector has two or more plug contacts, the cross section of the annular cavity may be any one of a rectangle, an ellipse, a rounded rectangle, and a gourd shape, or may be other shapes, which is not described herein again.

In other embodiments of the high-frequency high-speed connector, an annular protrusion is integrally formed at the front end face of the plug insulating core, and the annular protrusion forms a plug structure. The front end of the socket insulating inner core is provided with an annular sleeve, the annular sleeve forms a plug-in fit structure, and when the plug-in fit structure is plugged into the socket insulating inner core, the annular sleeve is in plug-in fit with the annular protrusion, so that the part of the plug contact element, which is positioned at the interface between the plug insulating inner core and the socket insulating inner core, is covered under the plug-in state.

In other embodiments of the high-frequency high-speed connector, an annular sleeve is fixedly bonded at the front end face of the insulating inner core, and the annular sleeve forms a plug-in structure.

In other embodiments of the high-frequency high-speed connector, the plug structure is circumferentially transition-fitted with the plug mating structure.

Example 1 of the insulating core of the present invention:

the specific structure of the insulating inner core in the embodiment adopts the structure of the plug insulating inner core in any embodiment of the high-frequency high-speed connector.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. An insulating inner core, which is provided with a contact mounting hole (108) and the front end of the insulating inner core corresponds to the plugging end of a mating contact, characterized in that the front end surface of the insulating inner core is provided with a plugging structure around the front end of the contact mounting hole (108), and the plugging structure is used for plugging with a plugging matching structure on the mating insulating inner core so as to cover the part of the contact at the interface between the insulating inner core and the mating insulating inner core in a plugging state, so that the characteristic impedance of the part is matched with the characteristic impedance of the adjacent part.

2. The insulated core of claim 1, wherein the mating structures mate with the mating structures with a circumferential clearance fit.

3. The insulating core according to claim 1, characterized in that an annular cavity (127) is integrally formed at the front end face of the insulating core, and the annular cavity (127) forms the plug structure.

4. The insulating core according to claim 1, wherein an annular protrusion is integrally formed at the front end surface of the insulating core, and the annular protrusion forms the insertion structure.

5. An insulating core according to any of claims 1-4, characterized in that the outer circumference of the insulating core is provided with impedance tuning bosses (112), the impedance tuning bosses (112) being arranged in extension of the contact mounting hole (108) and at least two of them being arranged at intervals in the circumference of the insulating core for adjusting the characteristic impedance at the respective locations.

6. The insulated core of claim 5 wherein the bosses have ribs (113) on the top surface for forming an interference fit with the housing.

7. An insulating core according to any of claims 1-4, characterized in that the outer circumference of the insulating core is provided with circumferential grooves (114) for adjusting the characteristic impedance at the corresponding locations.

8. An insulating core according to any of claims 1-4, characterized in that the contact mounting holes (108) are rectangular holes for mating with mounting segments (117) of rectangular cross-section on the mating contacts.

9. An insulating core according to any of claims 1-4, characterized in that the wall of the contact mounting hole (108) is provided with impedance adjusting grooves (111), and the impedance adjusting grooves (111) are arranged along the extension direction of the contact mounting hole (108) for adjusting the characteristic impedance at the corresponding position.

10. A high frequency high speed connector comprising an insulating core, wherein the insulating core is the insulating core according to any one of claims 1 to 9.