CN110350349B - Plug connector for differential data transmission - Google Patents

Plug connector for differential data transmission Download PDF

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Publication number
CN110350349B
CN110350349B CN201910550944.9A CN201910550944A CN110350349B CN 110350349 B CN110350349 B CN 110350349B CN 201910550944 A CN201910550944 A CN 201910550944A CN 110350349 B CN110350349 B CN 110350349B
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CN
China
Prior art keywords
plug
socket
sheet type
type contact
insulator
Prior art date
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Active
Application number
CN201910550944.9A
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Chinese (zh)
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CN110350349A (en
Inventor
王新
刘毓
王瑞婷
崔艳磊
张志中
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China Aviation Optical Electrical Technology Co Ltd
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China Aviation Optical Electrical Technology Co Ltd
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Publication date
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Priority to CN201910550944.9A priority Critical patent/CN110350349B/en
Publication of CN110350349A publication Critical patent/CN110350349A/en
Application granted granted Critical
Publication of CN110350349B publication Critical patent/CN110350349B/en
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    • 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
    • H01R13/02—Contact members
    • H01R13/26—Pin or blade contacts for sliding co-operation on one side only
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • 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

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A plug connector for differential data transmission comprises a plug connector and a socket connector, wherein the plug connector comprises a plug tail sleeve arranged in a plug shell and a plug insulator arranged in the plug tail sleeve, the plug insulator is provided with a plurality of axially arranged bulges along the circumferential direction, plug sheet type contact elements arranged in parallel are arranged on the same side of each bulge, and the plug sheet type contact elements positioned on the side parts of the adjacent bulges are mutually and vertically arranged; the socket connector comprises a socket tail sleeve arranged in the socket shell and a socket insulator arranged in the socket tail sleeve, a cavity body in plug-in fit with the plug insulator is arranged in the socket insulator, and socket sheet type contact elements which correspond to the plug sheet type contact elements and are mutually pushed and matched to realize electric connection are arranged in the cavity body. The invention can adapt to the development trend of product miniaturization by reasonably distributing the space of the contact, and can effectively eliminate stub effect and signal crosstalk in high-frequency signal transmission.

Description

Plug connector for differential data transmission
Technical Field
The invention belongs to the field of differential connectors, and particularly relates to a plug connector for differential data transmission.
Background
The differential connector is mainly used for high-speed data signal transmission, and the existing M12 differential connector is shown in fig. 1, and eight round pin/round hole contacts are divided into four differential pairs by adopting a cross shielding structure 7, and the cross shielding structure is in shielding conduction with a shell to play a shielding role, so that high-speed performance transmission is realized. With the miniaturization development of the connector products, the structure cannot be suitable for products with smaller overall dimensions, mainly because the cross shielding structure parts have harsh processing manufacturability and cannot be made small due to the limitation of volume and minimum wall thickness; if the wall of the part of the cross shielding structure is too thin, the part processing requirements cannot be met, and the part is easy to damage in the inserting process.
Disclosure of Invention
The invention aims to provide a plug connector for differential data transmission, which can adapt to the trend of miniaturization development of products through reasonable space distribution of contacts and can effectively eliminate stub effect and signal crosstalk in high-frequency signal transmission.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides a plug connector for differential data transmission, which comprises a plug connector and a socket connector, and is characterized in that: the plug connector comprises a plug tail sleeve arranged in a plug shell and a plug insulator which is arranged in the plug tail sleeve and protrudes out of the top of the plug tail sleeve, the plug insulator is provided with a plurality of axially arranged bulges along the circumferential direction, the same side of each bulge is provided with plug sheet type contact elements which are arranged in parallel, and the plug sheet type contact elements positioned on the side parts of the adjacent bulges are mutually and vertically arranged;
the socket connector comprises a socket tail sleeve arranged in a socket shell and a socket insulator arranged in the socket tail sleeve and protruding out of the top of the socket tail sleeve, a cavity body in plug-in fit with the plug insulator is formed in the socket insulator, and socket sheet type contact elements which correspond to the plug sheet type contact elements one to one and are mutually pushed and matched to realize electric connection are arranged in the cavity body.
The object of the invention is further achieved by the following technical measures.
In the aforementioned plug connector, two plug blade contacts are juxtaposed on the same side of each protrusion to form a differential pair.
In the plug connector, the convex sidewall of the plug insulator is provided with a first avoiding groove for accommodating the corresponding plug sheet type contact when the plug sheet type contact is elastically deformed in the up-down direction.
In the plug connector, a second avoiding groove for accommodating the corresponding socket sheet type contact when the socket sheet type contact elastically deforms in the vertical direction is formed in the side wall of the cavity of the socket insulator.
In the aforementioned plug connector, at least one protrusion of the plug insulator has a guiding and positioning surface for positioning when the protrusion is in plug-in fit with the receptacle insulator.
In the plug connector, the plug sheet type contact element is provided with a fixing section and an overhanging section at the side of the protrusion, which are sequentially connected from the tail part to the head part and used for being fixedly connected with the plug insulator, and the front end of the overhanging section is bent to form a bending section; the socket sheet type contact element and the plug sheet type contact element have the same structure.
The plug connector is described above, wherein the plug blade contact is fixedly fitted in the plug insulator by the first insert.
The plug connector is described above, wherein the socket blade contact is fixedly fitted in the socket insulator by the second insert.
By means of the technical scheme, compared with the cross shielding structure adopted by the prior art, the cross shielding structure is small in part number, simple in structure and not prone to damage in the repeated plugging process. Because the traditional pin/jack contact element is replaced by the sheet type differential contact element, and the sheet type contact element has a front and back double-contact structure, the stub effect during high-frequency signal transmission can be effectively eliminated, and the signal quality is greatly improved. In addition, because every two adjacent differential pairs which are arranged on the plugging end of the plug/socket connector along the circumferential direction are vertical, and are mutually isolated by the bulge of the plug insulator, the space is saved, and the signal crosstalk between the differential pairs can be effectively improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a differential pair structure of a differential connector in the prior art.
Fig. 2 is a schematic perspective view of a plug connector according to the present invention.
Fig. 3 is a schematic top view of the structure of fig. 2.
Fig. 4 is a schematic perspective view of the receptacle connector of the present invention.
Fig. 5 is a schematic top view of the structure of fig. 4.
Fig. 6 is a schematic diagram of the positional relationship between the plug sheet-type contact and the receptacle sheet-type contact in the plugged state.
Fig. 7 is a schematic diagram of the plug connector and the receptacle connector according to the present invention.
Fig. 8 is a schematic view of the assembly of the plug blade contacts with the plug insulator of the present invention.
Fig. 9 is a schematic view of the assembly of the socket blade contact with the socket insulator of the present invention.
Fig. 10 is a schematic view of the arrangement of the contacts of the plug sheet-type contact and the socket sheet-type contact according to the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
The invention provides a specific embodiment of a plug connector for differential data transmission, which comprises the following components: as shown in fig. 2 to 7, including a plug connector and a socket connector used in cooperation, the plug connector includes a plug tail sleeve 12 installed in the plug housing 11 and a plug insulator 13 installed in the plug tail sleeve 12 and protruding from the top of the plug tail sleeve, the plug insulator 13 has four axially arranged protrusions 131 along the circumferential direction, so that the whole plug insulator is similar to a windmill shape, the circumferentially adjacent protrusions are perpendicular to each other, the plug sheet type contacts 3 arranged in parallel are arranged on the same side of each protrusion 131, and the plug sheet type contacts 3 arranged on the same side of each two adjacent protrusions along the circumferential direction are perpendicular to each other; preferably, in the present embodiment, two tab-type contacts 3 are juxtaposed on the same side of each projection 131 to form one differential pair, but in other embodiments, a larger number of tab-type contacts may be arranged to form a larger number of differential pairs depending on the size of the connector or the required data transmission speed.
The socket connector comprises a socket tail sleeve 22 arranged in a socket shell 21 and a socket insulator 23 arranged in the socket tail sleeve 22 and protruding out of the top of the socket tail sleeve, a cavity 231 which is matched with the plug insulator 13 in shape and can be plugged and in sliding fit is arranged in the socket insulator 23, and socket sheet type contacts 4 which are in one-to-one correspondence with the plug sheet type contacts 3 and are mutually pushed and matched to realize electrical connection and data transmission are arranged in the cavity 231. Referring to fig. 3, the cavity 231 is also windmill-shaped, and the differential pairs formed by two socket sheet type contacts 4 arranged in parallel are located on the inner wall of the cavity in the axial direction, and the adjacent differential pairs in the circumferential direction are arranged perpendicular to each other. After the plug connector and the socket connector are plugged, four mutually-separated holes which are perpendicular to each other are formed between the plug insulator and the socket insulator and used for providing a pushing and matching arrangement space for the contact.
Preferably, the tail ends of the plug sheet type contacts 3 and the socket sheet type contacts 4 are embedded and fixed in the plug insulator or the socket insulator, and of course, conventional fixing methods such as adhesion, forced installation and the like can also be adopted. Furthermore, after the contacts are fixedly mounted, the tail ends of the contacts and the wires are connected by welding, or the electrical connection can be realized by means of welding of a printed circuit board. Referring to fig. 7, the plug housing 11 and the socket housing 21 may be connected by a conventional screw connection, a snap fit, etc., and the present invention is not limited thereto.
With reference to fig. 8, a preferred embodiment of the plug blade type contact fixed in the plug insulator in an insert mounting manner is further described: the plug insulator and the socket tail sleeve in the embodiment are of an integrally formed structure, and can be combined into a whole by adopting bonding, buckling connection and other modes; a first insert 33 is fixedly fitted in the plug insulator 13 and is further limited against axial play by a step fit with the plug tail sleeve, in which the plug blade contact 3 is fixed. Similarly, with reference to fig. 9, the socket insulator and the socket tail sleeve in this embodiment are integrally formed, but they may also be integrally formed by bonding or fastening; the second insert 43 is fixedly assembled in the socket insulator, the socket insulator and the second insert are matched through a step to realize axial limiting, and the socket sheet type contact element 4 is fixedly assembled in the second insert 43. It should be noted that the assembly manner of the header strip contact 3 or the socket strip contact 4 and the corresponding fixing insert may be bonding, strong assembly, etc., but the present invention is not limited thereto. And the plug/socket tail sleeve, the first insert and the second insert are all insulator structures made of insulating materials.
In this embodiment, the plug/receptacle tail sleeve is used to fixedly mount the plug/receptacle insulator in the respective connector housing; on the other hand, the end surfaces of the plug tail sleeve and the socket tail sleeve which are correspondingly abutted can play the role of indicating and limiting the insertion in place in the insertion process of the plug and socket connector.
In order to ensure that the plug sheet type contact elements 3 and the socket sheet type contact elements 4 cannot be inserted in place due to mutual interference when being deformed in the inserting process, the side wall of the bulge 131 of each plug insulator 13 is provided with first avoiding grooves 5 for accommodating the corresponding plug sheet type contact elements when the plug sheet type contact elements 3 are elastically deformed in the vertical direction, and each first avoiding groove 5 corresponds to the plug sheet type contact elements 3 one by one; similarly, the side wall of the cavity 231 of the socket insulator 23 is provided with second avoiding grooves 6 for accommodating corresponding socket sheet type contacts when the socket sheet type contacts 4 are elastically deformed in the vertical direction, and each second avoiding groove 6 corresponds to each socket sheet type contact 4 one to one. When the plug sheet type contact 3 and the socket sheet type contact 4 are mutually extruded and deformed, the plug sheet type contact and the socket sheet type contact can enter the corresponding avoiding groove.
In order to accurately and conveniently align and mate the plug connector with the socket connector, one of the protrusions of the plug insulator is provided with a guide positioning surface 1311; correspondingly, the wall 231 of the receptacle connector is designed to have a mating guide and positioning surface 2311 corresponding to and slidably fitting with the guide and positioning surface.
Referring to fig. 6, the socket sheet type contact 3 and the plug sheet type contact 4 have the same shape and structure, wherein the plug sheet type contact 3 has a fixing section 31 and an overhanging section 32 connected in sequence from the tail to the head, and the front end of the overhanging section 32 is bent in two directions in sequence to form a bending section 322. The fixing section 31 is used for fixing with the plug insulator 13, and the fixing section and the plug insulator can be bonded or embedded and fixedly connected in an insert fixing mode, which is not limited in the invention; the overhanging section 32 is located at the side of the protrusion 131; the bending section 322 is formed by bending the front end of the overhanging section 32 downward and then upward, and the free state is located at the notch of the first avoiding groove. When the plug connector is mated with the socket connector, the overhanging section 32 belonging to the plug connector is used for pushing against the adapting overhanging section belonging to the socket connector in the up-down direction and generating elastic deformation with the same amplitude as the adapting overhanging section, and the design of the bending section 322 is convenient for realizing the pushing and mating of the plug sheet type contact element and the socket sheet type contact element in the up-down direction and generating elastic deformation. When the plug connector and the socket connector are inserted in place, the contact elements of the plug connector and the socket connector are in a central symmetrical structure to form a matching state as shown in fig. 6, wherein the bent section 322 of the plug sheet type contact element is in conductive contact with the overhanging section 41 of the socket sheet type contact element, and the overhanging section 32 of the plug sheet type contact element is in conductive contact with the bent section 42 of the socket sheet type contact element, so that stable contact of two conductive contact points is realized. By means of the structural design of the contact element, the stub effect during high-frequency signal transmission can be effectively eliminated, and the signal quality is greatly improved.
In this embodiment, after the plug and the receptacle are plugged, the schematic diagram of the distribution and arrangement of the contacts of the plug sheet-type contact and the receptacle sheet-type contact is shown in fig. 10, where a single pair of differential pairs transmits 2.5Gbps signals, and four pairs of differential pairs transmit 10Gbps signals in total. Because each pair of differential pairs is separated by the plug insulator and is designed in a structure that every two differential pairs are vertical, the volume of the connector can be designed to be smaller, the space is saved, and the signal crosstalk is effectively improved.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.

Claims (7)

1. A plug connector for differential data transmission, including plug connector, socket connector, characterized by: the plug connector comprises a plug tail sleeve arranged in a plug shell and a plug insulator which is arranged in the plug tail sleeve and protrudes out of the top of the plug tail sleeve, the plug insulator is provided with a plurality of axially arranged bulges along the circumferential direction, the same side of each bulge is provided with plug sheet type contact elements which are arranged in parallel, and the plug sheet type contact elements positioned on the same side part of the adjacent bulges are mutually and vertically arranged; the convex side wall of the plug insulator is provided with a first avoidance groove for accommodating the corresponding plug sheet type contact element when the plug sheet type contact element is elastically deformed in the vertical direction;
the socket connector comprises a socket tail sleeve arranged in a socket shell and a socket insulator arranged in the socket tail sleeve and protruding out of the top of the socket tail sleeve, a cavity body in plug-in fit with the plug insulator is formed in the socket insulator, and socket sheet type contact elements which correspond to the plug sheet type contact elements one to one and are mutually pushed and matched to realize electric connection are arranged in the cavity body.
2. The plug connector for differential data transmission according to claim 1, characterized in that: two plug sheet type contact pieces are arranged on the same side of each protrusion in parallel to form a differential pair.
3. The plug connector for differential data transmission according to claim 1, characterized in that: and a second avoiding groove for accommodating the corresponding socket sheet type contact element when the socket sheet type contact element is elastically deformed in the vertical direction is formed in the side wall of the cavity of the socket insulator.
4. A plug connector for differential data transmission according to any one of claims 1 to 3, characterized in that: at least one protrusion of the plug insulator is provided with a guiding and positioning surface which plays a positioning role when the protrusion is in plug-in fit with the socket insulator.
5. The plug connector for differential data transmission according to claim 1, characterized in that: the plug sheet type contact element is provided with a fixed section and an overhanging section positioned on the side part of the bulge, which are sequentially connected from the tail part to the head part and are used for being fixedly connected with the plug insulator, and the front end of the overhanging section is bent to form a bending section; the socket sheet type contact element and the plug sheet type contact element have the same structure.
6. The plug connector for differential data transmission according to claim 1, characterized in that: the plug sheet type contact element is fixedly assembled in the plug insulator through the first insert.
7. The plug connector for differential data transmission according to claim 1, characterized in that: and the socket sheet type contact element is fixedly assembled in the socket insulator through the second insert.
CN201910550944.9A 2019-06-24 2019-06-24 Plug connector for differential data transmission Active CN110350349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910550944.9A CN110350349B (en) 2019-06-24 2019-06-24 Plug connector for differential data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910550944.9A CN110350349B (en) 2019-06-24 2019-06-24 Plug connector for differential data transmission

Publications (2)

Publication Number Publication Date
CN110350349A CN110350349A (en) 2019-10-18
CN110350349B true CN110350349B (en) 2020-11-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910550944.9A Active CN110350349B (en) 2019-06-24 2019-06-24 Plug connector for differential data transmission

Country Status (1)

Country Link
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6702590B2 (en) * 2001-06-13 2004-03-09 Molex Incorporated High-speed mezzanine connector with conductive housing
US7736159B1 (en) * 2009-04-07 2010-06-15 Tyco Electronics Corporation Pluggable connector with differential pairs
CN101924286B (en) * 2010-07-14 2013-12-18 中航光电科技股份有限公司 Arrangement structure of differential contact elements and electric connector with structure
CN105406211B (en) * 2015-07-31 2018-07-06 中航光电科技股份有限公司 A kind of connecting part and connector

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