CN113690698A - Coaxial socket connector - Google Patents
Coaxial socket connector Download PDFInfo
- Publication number
- CN113690698A CN113690698A CN202110912805.3A CN202110912805A CN113690698A CN 113690698 A CN113690698 A CN 113690698A CN 202110912805 A CN202110912805 A CN 202110912805A CN 113690698 A CN113690698 A CN 113690698A
- Authority
- CN
- China
- Prior art keywords
- contact portion
- contact
- terminal
- central
- central contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000615 nonconductor Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 230000013011 mating Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000003032 molecular docking Methods 0.000 claims abstract description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008054 signal transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The application discloses coaxial socket connector includes: a central terminal including a central contact portion mechanically and electrically connected to a wire terminal coupled to the plug connector and a contact leg electrically connected to the docking circuit board; an external terminal including an outer ring portion surrounding the central contact portion and mechanically and electrically connected to an external conductor surrounding the core terminal, and a mating pin electrically connected to a mating circuit board; a space terminal including a shield portion and a contact portion, the shield portion being located between the central contact portion and the outer ring portion in a radial direction of the central contact portion, the contact portion being electrically connected to the mating circuit board; an electrical insulator electrically insulating and integrally coupling the center terminal, the outer terminal, and the space terminal; this provides better shielding and high frequency characteristics.
Description
Technical Field
The present application relates to a coaxial receptacle connector.
Background
Prior artplease refer to the utility model No. CN204067768U, which discloses a coaxial connector comprising an outer conductor having a cylindrical portion, a central conductor having a cylindrical contact portion extending along an axial direction inside the cylindrical portion, and an insulator for fixing the outer conductor and the central conductor.
The coaxial connector in the related art is used for soldering to a mating circuit board, and can be used as a device for connecting a circuit formed on a substrate and a device independent of the substrate through a coaxial cable to realize signal transmission. In the case where the signal to be transmitted is a high-frequency signal, it is important to integrate (match) the impedance of the coaxial connector with the input impedance or the output impedance of the circuit.
The impedance of the coaxial connector varies depending on the structural elements of the coaxial connector, such as the shape and size of the center conductor and the outer conductor, and the distance between the center conductor and the outer conductor. When designing a coaxial connector, these structural elements are appropriately adjusted to match (match) the impedance of the coaxial connector with the input impedance of the circuit, thereby realizing high-frequency transmission characteristics.
However, the coaxial connector structure disclosed in the prior art is not sufficient for transmitting high frequency signals, and therefore, it is necessary to design a new solution to compensate for the above-mentioned drawbacks of the prior art.
Disclosure of Invention
An object of the present application is to provide a coaxial socket connector having better shielding effect and high frequency characteristics.
In order to achieve the above purpose, the present application provides the following technical solutions:
a coaxial receptacle connector comprising:
a central terminal including a central contact portion mechanically and electrically connected to a wire terminal coupled to the plug connector and a contact leg electrically connected to the docking circuit board;
an external terminal including an outer ring portion surrounding the central contact portion and mechanically and electrically connected to an external conductor surrounding the core terminal, and a mating pin electrically connected to a mating circuit board;
a space terminal including a shield portion and a contact portion, the shield portion being located between the central contact portion and the outer ring portion in a radial direction of the central contact portion, the contact portion being electrically connected to the mating circuit board;
an electrical insulator electrically insulating and integrally coupling the center terminal, the outer terminal, and the space terminal;
the shielding portion shields the center contact portion and the outer ring portion from each other.
Further, the shielding portion is cylindrical around the center contact portion for one circle.
Further, the height of the shield portion projecting upward from the electrical insulator in the axial direction of the center contact portion is not less than the height of the center contact portion projecting upward from the electrical insulator.
Further, the contact foot extends out of the outer ring portion along the radial direction of central contact portion, along the axial direction of central contact portion, the interval terminal is formed with the first breach of stepping down that steps down to the contact foot, the external terminal is formed with the second breach of stepping down that steps down to the contact foot.
Further, the contact foot includes first section portion and second section portion, along the axial direction of central authorities contact site, first section portion corresponds with first notch of stepping down, second section portion corresponds with the second notch of stepping down, the width W2 of second section portion is greater than the width W1 of first section portion, the width L2 of second notch of stepping down is greater than the width L1 of first notch of stepping down.
Further, shielding part lower extreme edge outwards extends along the radial direction of central contact site and is formed with the shirt rim part, contact segment further outwards extends by the shirt rim part and forms, first abdication breach is formed by the shirt rim part and upwards extends to shielding part.
Further, the first yielding notch and the second yielding notch are filled with electric insulators.
Further, the skirt portion is located between the central contact portion and the outer ring portion in a radial direction of the central contact portion, and a projection of the skirt portion does not overlap with a projection of the central contact portion and a projection of the skirt portion does not overlap with the outer ring portion in an axial direction of the central contact portion.
Further, the heights H of the first abdicating notch and the second abdicating notch along the axial direction of the central contact part are the same.
Furthermore, the number of the contact parts is two, the two contact parts extend along the same straight line, and the straight line of the extending direction of the contact parts is perpendicular to the straight line of the extending direction of the contact pins.
Compared with the prior art, the coaxial connector designed by the application has better shielding effect and high-frequency characteristic.
Drawings
Fig. 1 is a perspective view of the coaxial socket connector of the present application.
Fig. 2 is a partially exploded perspective view of the coaxial jack connector of the present application.
Fig. 3 is an exploded perspective view of the coaxial jack connector of the present application.
Fig. 4 is a bottom view of the coaxial receptacle connector of the present application.
Fig. 5 is a bottom view of the coaxial receptacle connector of fig. 2.
Fig. 6 is a top view of the center terminal of the coaxial receptacle connector of the present application.
Fig. 7 is a sectional view taken along line a-a in fig. 4.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 7, a coaxial receptacle connector disclosed herein is generally used for soldering to a mating circuit board (not shown) and mating with a plug connector (not shown) for signal transmission. The coaxial socket connector includes a central terminal 1, an outer terminal 2, a spacing terminal 3 and an electrical insulator 4.
The central terminal 1 includes a central contact portion 11 and a contact pin 12, the central contact portion 11 is mechanically and electrically connected to a core terminal (not shown) coupled to the plug connector, and the contact pin 12 is electrically connected to the mating circuit board. The external terminal 2 includes an outer ring portion 21 and a pair of pins 22, the outer ring portion 21 surrounds the central contact portion 11 and is mechanically and electrically connected to an external conductor (not shown) surrounding a core terminal of the plug connector, and the pair of pins 22 is electrically connected to a mating circuit board. The spacing terminal 3 comprises a shielding part 31 and a contact part 32, the shielding part 31 is positioned between the central contact part 11 and the outer ring part 21 along the radial direction of the central contact part 11, and the contact part 32 is electrically connected with the butt circuit board. The electrical insulator 4 is made of an insulating material and is used for electrically and integrally combining the center terminal 1, the outer terminals 2, and the space terminals 4. The shielding portion 31 shields the central contact portion 11 and the outer ring portion 21 from each other, thereby achieving better grounding and shielding effects and facilitating improvement of high-frequency characteristics.
Referring to fig. 3 to 6, the contact pin 12 is formed by extending the lower edge of the central contact portion 11 out of the outer ring portion 21 along the radial direction of the central contact portion 11, and the contact pin 12 sequentially includes a base section 120, a first section 121, and a second section 122. In the present application, the width W0 of the base segment 120 is smaller than the width W1 of the first segment 121, and the width W1 of the first segment 121 is smaller than the width W2 of the second segment 122. A through hole 1221 is formed through the middle position of the second step portion 122 along the axial direction of the central contact portion 11, the through hole 1221 is filled with the electrical insulator 4, and the through hole 1221 is provided to increase the bonding strength between the central terminal 1 and the electrical insulator 4 and to adjust the characteristic impedance.
Referring to fig. 1 to 3 and 7, the shielding portion 31 is cylindrical (or hollow tube with two open ends) with two ends penetrating. The lower end edge of the shielding portion 31 extends outward in the radial direction of the center contact portion 11 to form a skirt portion 30, and the contact portion 32 is formed by further extending outward from the skirt portion 30. In the present application, there are two contact portions 32, two contact portions 32 extend along the same straight line, and the straight line of the extending direction of the contact portions 32 is perpendicular to the straight line of the extending direction of the contact pins 12.
Further, along the axial direction of the central contact portion 11, the space terminal 3 is formed with a first abdicating notch 311 for abdicating the contact pin 12, and along the axial direction of the central contact portion 11, the first section 121 corresponds to the first abdicating notch 311. In the present application, specifically, the first relief notch 311 is formed by the skirt portion 30 and extends upward to the shielding portion 31, and the annular skirt portion 30 is broken by the first relief notch 311.
Referring to fig. 2 to 5, along the axial direction of the central contact portion 11, the external terminal 2 is formed with a second relief notch 211 for relieving the contact pin 12, and along the axial direction of the central contact portion 11, the second segment 122 corresponds to the second relief notch 211. The width W2 of the second segment 122 is greater than the width W1 of the first segment 121.
The first segment 121 and the second segment 122 are respectively matched with the first yielding notch 311 and the second yielding notch 211, and the width relationship among the base segment 120, the first segment 121, the second segment 122, the first yielding notch 311 and the second yielding notch 211 is designed to adjust the characteristic impedance, so as to provide the overall high-frequency characteristic of the coaxial socket connector.
It is to be explained that the so-called characteristic impedance: also known as "characteristic impedance", it is not a direct current resistance, and is a concept in long line transmission. In a high-frequency range, in a signal transmission process, a signal generates an instantaneous current along a transmission direction due to the establishment of an electric field between a signal line and a reference plane (a power supply or a ground plane), if a transmission line is isotropic, a current I always exists as long as the signal is transmitted, and if the output level of the signal is V, the transmission line is equivalent to a resistor with the size of V/I in the signal transmission process, and the equivalent resistor is called as the characteristic impedance Z of the transmission line. During the transmission of a signal, if the characteristic impedance of a transmission path changes, the signal is reflected at a node where the impedance is discontinuous.
An example analogy of the phenomenon is: poor road conditions of the transport lines (similar to characteristic impedance in transmission lines) can affect the speed of transport vehicle fleets, and the narrower the path, the greater the obstruction of the path (the greater the characteristic impedance, the less the energy of the radio wave passing through); the wider the road and the better the road conditions, the faster the fleet of vehicles (the more radiowave energy that passes). If one section of road has particularly good road conditions and the other section of road has particularly poor road conditions, the motorcade needs to slow down when entering the poor road section from the road section with good road conditions. This indicates a mismatch in the road conditions (impedance mismatch) between the two paths. However, the characteristic impedance of the coaxial cable is related to the inner and outer diameters of the conductor (center terminal 1) and the dielectric constant of the dielectric between the conductors (the electrical insulator 4, the air near the center terminal 1, the outer terminal 2 near the center terminal 1, the space terminal 3, and the like). The characteristic impedance is adjusted by changing the influence factors, so that the coaxial socket connector meets the requirement of high-frequency transmission.
Further, referring to fig. 7, the height of the shielding portion 31 protruding upward from the electrical insulator 4 is not less than the height of the central contact portion 11 protruding upward from the electrical insulator 4 in the axial direction of the central contact portion 11. In addition, the first and second relief notches 311 and 211 are filled with an electrical insulator 4. The skirt portion 30 is located between the central contact portion 11 and the outer ring portion 21 in the radial direction of the central contact portion 11; and along the axial direction of the central contact part 11, the projection of the skirt portion 30 is not overlapped with the projection of the central contact part 11, and the projection of the skirt portion 30 is not overlapped with the outer ring part 21. The heights H of the first and second relief notches 311 and 211 in the axial direction of the central contact portion 11 are the same.
Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A coaxial receptacle connector, comprising:
a central terminal including a central contact portion mechanically and electrically connected to a wire terminal coupled to the plug connector and a contact leg electrically connected to the docking circuit board;
an external terminal including an outer ring portion surrounding the central contact portion and mechanically and electrically connected to an external conductor surrounding the core terminal, and a mating pin electrically connected to a mating circuit board;
a space terminal including a shield portion and a contact portion, the shield portion being located between the central contact portion and the outer ring portion in a radial direction of the central contact portion, the contact portion being electrically connected to the mating circuit board;
an electrical insulator electrically insulating and integrally coupling the center terminal, the outer terminal, and the space terminal;
the shielding portion shields the center contact portion and the outer ring portion from each other.
2. The coaxial socket connector according to claim 1, wherein: the shielding portion is cylindrical and surrounds the central contact portion for one circle.
3. The coaxial socket connector according to claim 1 or 2, wherein: the height of the shield portion projecting upward beyond the electrical insulator in the axial direction of the center contact portion is not less than the height of the center contact portion projecting upward beyond the electrical insulator.
4. The coaxial socket connector according to claim 1 or 2, wherein: the contact foot extends out outer ring portion along the radial direction of central contact portion, along the axial direction of central contact portion, the interval terminal is formed with the first breach of stepping down that steps down to the contact foot, the external terminal is formed with the second breach of stepping down that steps down to the contact foot.
5. The coaxial socket connector according to claim 4, wherein: the contact foot includes first section portion and second section portion, along the axial direction of central authorities contact site, first section portion corresponds with first breach of stepping down, second section portion corresponds with the second breach of stepping down, the width W2 of second section portion is greater than the width W1 of first section portion, the width L2 of second breach of stepping down is greater than the width L1 of first breach of stepping down.
6. The coaxial socket connector according to claim 4, wherein: the shielding part lower extreme edge outwards extends along the radial direction of central contact portion and is formed with the shirt rim part, contact segment further outwards extends by the shirt rim part and forms, first notch of stepping down is formed by the shirt rim part and upwards extends to the shielding part.
7. The coaxial socket connector according to claim 6, wherein: and the first yielding notch and the second yielding notch are filled with electric insulators.
8. The coaxial socket connector according to claim 6, wherein: the skirt portion is located between the central contact portion and the outer ring portion in a radial direction of the central contact portion, and a projection of the skirt portion does not overlap with a projection of the central contact portion and a projection of the skirt portion does not overlap with the outer ring portion in an axial direction of the central contact portion.
9. The coaxial socket connector according to claim 4, wherein: the first yielding notch and the second yielding notch are the same in height H along the axial direction of the central contact part.
10. The coaxial socket connector according to claim 4, wherein: the contact part is provided with two contact parts, the two contact parts extend along the same straight line, and the straight line of the extending direction of the contact parts is perpendicular to the straight line of the extending direction of the contact pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912805.3A CN113690698B (en) | 2021-08-10 | 2021-08-10 | Coaxial socket connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912805.3A CN113690698B (en) | 2021-08-10 | 2021-08-10 | Coaxial socket connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113690698A true CN113690698A (en) | 2021-11-23 |
| CN113690698B CN113690698B (en) | 2024-03-15 |
Family
ID=78579269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110912805.3A Active CN113690698B (en) | 2021-08-10 | 2021-08-10 | Coaxial socket connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113690698B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2200130A1 (en) * | 2008-12-17 | 2010-06-23 | Tyco Elektronics AMP GmbH | Shielded electrical plug-in connector |
| TWM493176U (en) * | 2014-05-30 | 2015-01-01 | Molex Taiwan Ltd | Electrical connector |
| CN104733885A (en) * | 2013-11-11 | 2015-06-24 | 第一精工株式会社 | Receptacle connector and terminal used therefor |
| CN104779480A (en) * | 2014-01-13 | 2015-07-15 | 电连精密技术有限公司 | Side plugged connector |
| CN109216972A (en) * | 2018-08-30 | 2019-01-15 | 昆山雷匠通信科技有限公司 | Plate is to board-like high-frequency socket and mobile device |
| CN110768037A (en) * | 2018-07-27 | 2020-02-07 | 春源科技(深圳)有限公司 | Ultrahigh frequency superfine coaxial RF connector assembly |
| CN211605561U (en) * | 2019-12-31 | 2020-09-29 | 东莞市泰康电子科技有限公司 | Stable and reliable coaxial connector combination structure |
-
2021
- 2021-08-10 CN CN202110912805.3A patent/CN113690698B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2200130A1 (en) * | 2008-12-17 | 2010-06-23 | Tyco Elektronics AMP GmbH | Shielded electrical plug-in connector |
| CN104733885A (en) * | 2013-11-11 | 2015-06-24 | 第一精工株式会社 | Receptacle connector and terminal used therefor |
| CN104779480A (en) * | 2014-01-13 | 2015-07-15 | 电连精密技术有限公司 | Side plugged connector |
| TWM493176U (en) * | 2014-05-30 | 2015-01-01 | Molex Taiwan Ltd | Electrical connector |
| CN110768037A (en) * | 2018-07-27 | 2020-02-07 | 春源科技(深圳)有限公司 | Ultrahigh frequency superfine coaxial RF connector assembly |
| CN109216972A (en) * | 2018-08-30 | 2019-01-15 | 昆山雷匠通信科技有限公司 | Plate is to board-like high-frequency socket and mobile device |
| CN211605561U (en) * | 2019-12-31 | 2020-09-29 | 东莞市泰康电子科技有限公司 | Stable and reliable coaxial connector combination structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113690698B (en) | 2024-03-15 |
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