CN112636102A

CN112636102A - High-speed connector

Info

Publication number: CN112636102A
Application number: CN202011372555.0A
Authority: CN
Inventors: 张维良
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-09
Anticipated expiration: 2040-11-30
Also published as: CN112636102B

Abstract

The invention provides a high-speed connector, which comprises a plurality of signal modules arranged in a superposition mode, wherein each signal module comprises: an insulator; a signal terminal fixed to the insulator; the grounding terminals are fixed on the insulator, and the signal terminals are positioned between two adjacent grounding terminals; the shielding sheet is fixed on the upper side surface of the insulator, and the front end of the shielding sheet is provided with a U-shaped shielding part surrounding the outside of the signal terminal; and the shielding connecting piece is fixed on the lower side surface of the insulator, and is provided with a first contact part which is in contact conduction with the grounding terminal and a second contact part which is in contact conduction with the shielding sheet on the adjacent signal module. The adjacent signal modules are connected through the second contact part, so that the shielding performance of the high-speed connector can be improved, the electromagnetic crosstalk is reduced, and the high-frequency performance of the connector is improved.

Description

High-speed connector

Technical Field

The invention relates to the technical field of high-speed connectors, in particular to a high-speed connector.

Background

The high-speed connector is widely applied to communication technology, is a common connector for large-scale communication equipment, ultrahigh-performance servers, supercomputers, industrial computers and high-end storage equipment, and is mainly used for connecting a single board and a back board, wherein a 90-degree vertical structure is formed between the single board and the back board to transmit high-speed differential signals or single-ended signals and transmit large current.

High-speed connectors are generally formed by stacking and arranging a plurality of signal modules, in the design of the high-speed connectors, with the increase of transmission rate, higher requirements are placed on the electrical performance of the connectors, especially electromagnetic crosstalk always plagues the design of the high-speed connectors, which requires good shielding grounding in product design, so that how to solve the problem of crosstalk in the high-speed connectors is a technical problem facing those skilled in the art.

Disclosure of Invention

The invention aims to provide a high-speed connector capable of reducing electromagnetic crosstalk.

In order to achieve the purpose, the high-speed connector adopts the following technical scheme:

a high-speed connector comprising a plurality of signal modules arranged in a stack, the signal modules comprising:

an insulator;

the signal terminals are fixed on the insulator, and are arranged at intervals along the left-right direction, and the front ends of the signal terminals are defined as contact ends for being in contact fit with the signal terminals of another connector;

the signal terminals are positioned between two adjacent ground terminals, and the front ends of the ground terminals are used for being in contact fit with the ground terminals of another connector;

the shielding sheet is fixed on one of the upper side surface and the lower side surface of the insulator, the front end of the shielding sheet is provided with a U-shaped shielding part which surrounds the outside of the signal terminal, the U-shaped shielding part corresponds to each group of signal terminals one by one, and the U-shaped shielding part is used for being in contact fit with the U-shaped shielding part of the other connector;

and the shielding connecting piece is fixed on the other side surface of the upper side surface and the lower side surface of the insulator, a first contact part which is in contact conduction with each grounding terminal is arranged on the shielding connecting piece, and a second contact part which is in contact conduction with a shielding sheet on the adjacent signal module is also arranged on the shielding connecting piece.

The beneficial effects of the above technical scheme are that: the signal terminal can realize the transmission of signals, and the grounding terminal can realize grounding; the shielding sheet is fixed on one side surface of the insulator, the U-shaped shielding part at the front end of the shielding sheet surrounds the outside of the signal terminal and is used for being in contact fit with the U-shaped shielding piece of the other connector, so that the inserting end of the signal terminal of the two connectors can be shielded; the shielding connecting piece is fixed on the other side face of the insulator, the shielding connecting piece is provided with a first contact part which is in contact conduction with each grounding terminal, and the shielding connecting piece is also provided with a second contact part which is used for being in contact conduction with the shielding sheet on the adjacent signal module, so that after the signal modules are stacked and arranged, the adjacent signal modules are in contact with each other through the second contact part on the shielding connecting piece, the shielding performance of the high-speed connector can be improved, the electromagnetic crosstalk is reduced, and the high-frequency performance of the connector is improved.

Further, in order to simplify the structure and facilitate the manufacturing, it is defined that the shielding plate is fixed on the upper side surface of the insulator, the U-shaped opening of the U-shaped shielding part is arranged downward, and the first contact part is a contact plate extending upward.

Further, in order to guarantee better ground function, do not increase the lateral dimension of product simultaneously to make things convenient for the contact cooperation between contact piece and the ground terminal, the contact piece is including the tip contact piece that is located both ends and the middle contact piece that is located the centre, and the length of middle contact piece in the up-down direction is greater than the length of tip contact piece, the ground terminal is including the tip ground terminal that is located both ends and the middle ground terminal that is located the centre, and the width of middle ground terminal on the left and right sides direction is greater than the width of tip ground terminal, and the tip contact piece is direct to be contacted with tip ground terminal butt, and the contact of pegging graft of middle contact piece and middle ground terminal is provided with the jack.

Furthermore, in order to facilitate the insertion and fixation, a protrusion is convexly arranged on the hole wall of the jack, so that the middle contact piece is in interference fit with the jack.

Further, for convenient grafting and guarantee the fixed effect of grafting, the jack is the rectangular hole, the arch has two and sets up respectively on the relative pore wall of jack, and two archs are staggered and are arranged.

Furthermore, in order to facilitate the fixation between the shielding connecting piece and the insulator and the setting and the use of the second contact part, the shielding connecting piece comprises a plurality of fixing pieces which are arranged at left and right intervals and are fixedly connected with the insulator, the fixing pieces extend backwards, and the second contact part is an elastic claw of which one end is connected to the fixing pieces and the other end extends towards the direction far away from the insulator.

Furthermore, in order to ensure the contact effect, a bulge part formed by bending is arranged on the elastic claw, and the bulge part is used for being in contact conduction with the shielding sheet on the adjacent signal module.

Furthermore, in order to connect all the grounds into a whole, so as to form a complete mesh structure at the mating ends of the two connectors, and effectively shield the mating ends, each signal module further includes a contact structure for making the shielding plate in contact with each ground terminal.

Furthermore, in order to facilitate the arrangement of the contact structure and the fixation of the shielding plate, the contact structure is integrally connected to the shielding plate and extends towards the inside of the insulator, the folded edge penetrates through the insulator and is fixedly connected with the grounding terminal in an inserting mode, and a through hole is formed in the insulator.

Drawings

FIG. 1 is a partial perspective view of one perspective of the high speed connector of the present invention;

FIG. 2 is a partial perspective view of another perspective of the high speed connector of the present invention;

FIG. 3 is a perspective view of yet another perspective of the high speed connector of the present invention;

FIG. 4 is an exploded view of a signal module of the high speed connector of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 4.

In the figure: 10-a signal module; 11-an insulator; 12-a pair of signal terminals; 13-an intermediate ground terminal; 131-a jack; 132-a bump; 14-a shielding sheet; 141-U-shaped shield; 142-folding the edge; 15-shield connection; 151-fixing piece; 152-a latch; 153-intermediate contact piece; 154-end contact piece; 155-connector body; 16-end ground terminal.

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 noted that relational terms such as "first" and "second," and the like, 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, the terms "comprises," "comprising," or any other variation thereof, 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, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

One embodiment of the high-speed connector of the present invention is shown in fig. 1, 2 and 3, and includes a plurality of signal modules 10 stacked one on top of the other, and as shown in fig. 4, the signal modules 10 include an insulator 11, a pair of signal terminals 12, an intermediate ground terminal 13, a shield plate 14, a shield connector 15, and an end ground terminal 16.

Specifically, the signal terminal pairs 12 are fixed on the insulator 11, the signal terminal pairs 12 are arranged in four groups and spaced in the left-right direction, the signal terminal pairs 12 are used for transmitting signals, the front ends of the signal terminal pairs 12 are defined as contact ends for contacting and matching with the signal terminal pairs of another connector, and the front ends of the signal terminal pairs 12 extend out of the insulator 11.

The intermediate ground terminal 13 is located in the middle, the end ground terminals 16 are located at both ends, the intermediate ground terminal 13 and the end ground terminal 16 together constitute a ground terminal of the signal module, the intermediate ground terminal 13 and the end ground terminal 16 are both fixed on the insulator 11, and the front ends thereof both extend out of the insulator 11. The intermediate ground terminals 13 are three, three intermediate ground terminals 13 and two end ground terminals 16 are arranged at intervals in the left-right direction, and the width of the intermediate ground terminals 13 in the left-right direction is larger than that of the end ground terminals 16. The signal terminal pair 12 is located between two adjacent ground terminals, and the front end of each ground terminal is adapted to be in contact-fit with the ground terminal of the other connector.

The shield plate 14 is fixed on the upper side of the insulator 11, and the front end of the shield plate 14 is provided with four U-shaped shield portions 141 respectively surrounding the outside of the signal terminal pairs 12, i.e., the U-shaped shield portions 141 extend out of the insulator 1, one-to-one corresponding to each group of the signal terminal pairs 12. The U-shaped opening of the U-shaped shield 141 is disposed downward for contact mating with the U-shaped shield of the other connector.

The shielding plate 14 is further provided with a contact structure for contacting and conducting with each ground terminal, the contact structure in this embodiment is a plurality of folded edges 142 integrally connected to the shielding plate 14 and extending toward the inside of the insulator 11, and the folded edges 142 penetrate through the insulator 11 and are fixed to the ground terminals in an inserting manner, so that the insulator is provided with a plurality of through holes (not shown in the figure), and the ground terminals are provided with fixing holes (not shown in the figure).

The shielding connecting member 15 is fixed on the lower side surface of the insulator 11, and is located forward, the shielding connecting member 15 is provided with a first contact portion for contacting and conducting with each ground terminal, and a second contact portion for contacting and conducting with a shielding plate on an adjacent signal module.

Specifically, as shown in fig. 4, the shield connector 15 includes a connector main body 155 extending left and right, the first contact portion is a contact piece integrally connected to the connector main body 155 and extending upward, the contact piece in this embodiment includes end contact pieces 154 at both ends and an intermediate contact piece 153 in the middle, the length of the intermediate contact piece 153 in the up-down direction is greater than that of the end contact piece 154, the end contact piece 154 directly contacts with the end ground terminal 16, the intermediate contact piece 153 contacts with the intermediate ground terminal 13 in an inserted manner, and the intermediate ground terminal 13 is provided with an insertion hole 131, as shown in fig. 5. The jack 131 is a rectangular hole, the hole wall of the jack 131 is convexly provided with two protrusions 132, the two protrusions 132 are respectively arranged on the opposite hole walls of the jack 131, and the two protrusions 132 are arranged in a staggered manner, so that the intermediate contact piece 153 is in interference fit with the jack 131, and the intermediate contact piece 153 is fixedly connected with the intermediate grounding terminal 13.

As shown in fig. 4, the shielding connecting member 15 further includes four fixing pieces 151 integrally connected to the connecting member main body 155, the four fixing pieces 151 are spaced from each other and extend rearward, the fixing pieces 151 are used for being fixedly connected to the insulator 11, so that the shielding connecting member 15 is fixed to the insulator 11, and specifically, the fixing can be performed by means of hot riveting. The second contact portion is a spring claw 152 having one end connected to the fixing piece 151 and the other end extending in a direction away from the insulator 11, and the spring claw 152 is provided with a bulge portion (not shown) formed by bending downward, and the bulge portion is used for contacting and conducting with the shielding piece 14 on the adjacent signal module, as shown in fig. 3.

In the high-speed connector, the shielding sheet 14 is in contact conduction with each grounding terminal through the folded edge 142, the shielding connecting piece 15 is also in contact conduction with each grounding terminal through the contact sheet, and meanwhile, the shielding connecting piece 15 is also in contact conduction with the shielding sheet on the adjacent signal module through the elastic claw 152, so that after a plurality of signal modules 10 are overlapped and arranged, the adjacent signal modules 10 are in contact through the elastic claw 152 on the shielding connecting piece 15, all grounding is connected into a whole, therefore, a complete net-shaped structure can be formed at the inserting end of the two connectors, the inserting end is effectively shielded, the electromagnetic crosstalk is improved, the electromagnetic crosstalk is reduced, and the high-frequency performance of the connectors is improved.

In other embodiments of the high-speed connector, the contact structure on the shielding plate may be a contact arm disposed at the front end of the shielding plate, instead of passing through the flange of the insulator to be inserted and fixed with the ground terminal, and the contact arm is directly contacted and conducted with the ground terminal, at this time, the shielding plate may be fixed on the insulator by means of hot riveting.

In other embodiments of the high-speed connector, the contact structure may not be a structure integrally provided on the shield plate, but may be another separately provided metal plate which passes through the insulator, and has one end connected to the shield plate and the other end connected to the ground terminal.

In other embodiments of the high-speed connector, the spring claw is not provided with a bulge part, and the spring claw is directly contacted and conducted with the shielding sheet on the adjacent signal module.

In other embodiments of the high-speed connector, the second contact portion is not a snap finger attached to the fixing piece, but a projection provided to protrude on the fixing piece.

In other embodiments of the high speed connector, the retention tab itself directly constitutes the second contact.

In other embodiments of the high speed connector, the plurality of retention tabs may not be spaced apart, but rather may be joined together to form a single retention plate.

In other embodiments of the high speed connector, two protrusions on the wall of the hole of the jack may be arranged on one wall of the hole, or only one protrusion may be arranged on the wall of the hole of the jack.

In other embodiments of the high-speed connector, no protrusion is provided on the wall of the jack hole, and the intermediate contact piece is directly inserted into the jack hole and is in interference fit with the jack hole.

In other embodiments of the high-speed connector, the lengths of the end contact pieces and the intermediate contact pieces in the up-down direction may be the same, and all the contact pieces may be in plug contact with the ground terminal or in abutting contact with the ground terminal.

In another embodiment of the high-speed connector, the first contact portion may be a contact arm extending obliquely upward, and a raised portion may be formed on the contact arm by bending, and the raised portion is in contact with the ground terminal.

In other embodiments of the high-speed connector, the shield connecting member is fixed to the upper side of the dielectric body if the shield plate is fixed to the lower side of the dielectric body.

In other embodiments of the high-speed connector, there may be only one signal terminal of each set of female terminals according to different product requirements.

In other embodiments of the high-speed connector, the number of sets of signal terminals can be adjusted according to different product requirements, and the number of corresponding ground terminals, U-shaped shielding portions and first contact portions also needs to be adjusted.

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. A high-speed connector comprising a plurality of signal modules arranged in a stacked arrangement, the signal modules comprising:

an insulator;

2. The high-speed connector of claim 1, wherein the shield plate is fixed to the upper side of the insulator, the U-shaped opening of the U-shaped shield portion is disposed downward, and the first contact portion is a contact plate extending upward.

3. The high-speed connector according to claim 2, wherein the contact pieces include end contact pieces at both ends and an intermediate contact piece in the middle, the intermediate contact piece has a length in the up-down direction larger than that of the end contact pieces, the ground terminals include end ground terminals at both ends and an intermediate ground terminal in the middle, the intermediate ground terminal has a width in the left-right direction larger than that of the end ground terminal, the end contact pieces are in direct abutting contact with the end ground terminals, the intermediate contact pieces are in plugging contact with the intermediate ground terminal, and the intermediate ground terminal is provided with insertion holes.

4. A high speed connector according to claim 3, wherein the wall of the socket is provided with a projection thereon to provide an interference fit of the intermediate contact with the socket.

5. The high-speed connector according to claim 4, wherein the receptacle is a rectangular hole, and the two protrusions are provided on opposite walls of the receptacle, respectively, and the two protrusions are arranged in a staggered manner.

6. The high-speed connector according to any one of claims 1 to 5, wherein the shield connecting member includes a plurality of fixing pieces arranged at left and right intervals for fixedly connecting with the insulator, the fixing pieces extend rearward, and the second contact portion is a spring claw having one end connected to the fixing piece and the other end extending in a direction away from the insulator.

7. The high-speed connector of claim 6, wherein the latch is provided with a raised portion formed by bending, and the raised portion is used for contacting and conducting with the shielding plate on the adjacent signal module.

8. The high-speed connector according to any one of claims 1 to 5, wherein each signal module further comprises a contact structure for bringing the shield plate into contact with each ground terminal.

9. The high-speed connector of claim 8, wherein the contact structure is a flange integrally connected to the shield and extending toward the inside of the insulator, the flange passing through the insulator and being inserted into the ground terminal, and the insulator is provided with a through hole.