CN113422234A

CN113422234A - High-speed IO connector capable of improving terminal coplanarity and connector assembly

Info

Publication number: CN113422234A
Application number: CN202110726297.XA
Authority: CN
Inventors: 卢明胜; 陈功轩; 李栋
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-21
Anticipated expiration: 2041-06-29
Also published as: CN113422234B

Abstract

The invention relates to a high-speed IO connector capable of improving coplanarity of terminals and a connector assembly, which comprise at least two rows of terminals arranged at intervals, an insulating shell used for accommodating the terminals and a shielding shell covering the periphery of the insulating shell, wherein at least two rows of short piles are arranged on the tail end face of the insulating shell, and each row of short piles is in top press fit with the surface-mounted end of one row of terminals so as to ensure the coplanarity of the terminals in the connector at the surface-mounted end. According to the invention, the bending angle of the tail part of the terminal is increased, and the short piles are added on the insulating shell to prop against the surface-mounted ends of the terminal, so that the terminal with the overlarge bending angle of the surface-mounted ends in the row of terminals after injection molding is corrected. The stub props against the terminal, so that the deviation amplitude of the terminal partially deviating from the reference plane can be improved, and the purpose of improving the coplanarity of the terminals is achieved.

Description

High-speed IO connector capable of improving terminal coplanarity and connector assembly

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a high-speed IO connector capable of improving coplanarity of terminals.

Background

The existing high-follow IO connector generally guarantees coplanarity of terminals by means of precision of relative positions of the terminals and injection molding plastic in parts, the method for guaranteeing coplanarity needs to be high in dimensional tolerance, and processing difficulty and cost are increased.

Disclosure of Invention

In order to solve the above problems, the present invention provides a high-speed IO connector with a novel structure, which can improve the coplanarity of the terminals, so that the terminal coplanarity can be improved by increasing the bending angle between the terminal surface-mounted end and the terminal main body, arranging a stub on the insulating housing for abutting against the terminal surface-mounted end, and realizing the purpose of improving the coplanarity of the terminals through the abutting-pressing cooperation between the stub and the terminal surface-mounted end.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The high-speed IO connector capable of improving the coplanarity of the terminals comprises at least two rows of terminals arranged at intervals, an insulating shell used for accommodating the terminals and a shielding shell covering the periphery of the insulating shell, wherein at least two rows of short piles are arranged on the tail end face of the insulating shell, and each row of short piles is in top press fit with the surface-mounted end of one row of terminals so as to ensure the coplanarity of the terminals in the connector at the surface-mounted end.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

In the high-speed IO connector capable of improving coplanarity of the terminal, the terminal sequentially includes, from front to back, an elastic contact end, a terminal main body, a bending portion and a surface-mounted end, and the bending portion enables the surface-mounted end to maintain a contact force with the stub.

In the high-speed IO connector capable of improving coplanarity of the terminals, the terminal body extends axially along the connector, and the surface-mounted terminal is perpendicular to the terminal body, so that the surface-mounted terminal is in surface contact with the stud.

In the high-speed IO connector capable of improving the coplanarity of the terminal, the width of the bending portion is greater than that of the surface-mounted end, and a tapered diameter-reducing section adapted to the width change of the bending portion and the surface-mounted end is arranged between the bending portion and the surface-mounted end.

In the high-speed IO connector capable of improving coplanarity of the terminals, the side wall of the insulating housing corresponding to each row of the terminals is further provided with a limiting groove for accommodating the elastic contact end of each terminal, and the limiting groove extends to a depth capable of meeting elastic deformation of the elastic contact end.

In the high-speed IO connector capable of improving the coplanarity of the terminal, the limiting groove is a through groove extending in the length direction along the extending direction of the terminal body.

In the high-speed IO connector capable of improving coplanarity of the terminals, the terminals are fixed in one row by injection molding plastic, the two rows of terminals are fixed together by the insulating support, and the two sides of the insulating support are further provided with the separation limiting grooves adapted to the terminals.

In the high-speed IO connector capable of improving the coplanarity of the terminals, each row of the terminals are fixed by matching the convex columns on the injection molding plastic with the corresponding grooves on the insulating support.

In the high-speed IO connector capable of improving the coplanarity of the terminals, the other side of the injection molding plastic is further provided with a clamping table which is matched and locked with the corresponding opening on the insulating shell.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the invention, the high-speed IO connector assembly comprises a connector with a front end inserted oppositely and an adaptive connector, wherein the connector is the connector.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the invention can achieve considerable technical progress and practicability, has wide industrial utilization value and at least has the following advantages:

according to the invention, the bending angle of the tail part of the terminal is increased, and the short piles are added on the insulating shell to prop against the surface-mounted ends of the terminal, so that the terminal with the overlarge bending angle of the surface-mounted ends in the row of terminals after injection molding is corrected. The stub props against the terminal, so that the deviation amplitude of the terminal partially deviating from the reference plane can be improved, and the purpose of improving the coplanarity of the terminals is achieved. In addition, the short piles reduce the requirement on the bending angle consistency of the terminals, the coplanarity of the terminals with a certain amount of bending angle deviation at the surface-mounted ends can be realized, and the processing precision and the processing difficulty of the terminals are reduced.

Drawings

FIG. 1 is a schematic diagram of a receptacle end structure of a high-speed IO connector assembly according to the present invention;

FIG. 2 is an exploded view of the receptacle end portion of the high speed IO connector assembly of the present invention;

FIG. 3 is a schematic diagram of a socket terminal internal terminal structure of the high-speed IO connection assembly of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the receptacle end of the high-speed IO connector assembly of the present invention;

FIG. 5 is a rotated view of FIG. 4;

FIG. 6A is a schematic diagram of a single-row terminal structure of a socket end of the high-speed IO connector assembly according to the present invention;

FIG. 6B is a rotated view of FIG. 6A;

FIG. 7 is a general view of the high speed IO connector assembly receptacle end insulating housing of the present invention;

FIG. 8 is a schematic diagram of the high speed IO connector assembly receptacle end terminal shield of the present invention;

FIG. 9 is a cross-sectional view of the receptacle end of the high speed IO connector assembly of the present disclosure;

FIG. 10 is a schematic diagram illustrating a high-speed IO connector assembly in a mated state according to the present invention;

FIG. 11 is a schematic diagram of a high-speed IO connector assembly in a disconnected state according to the present invention;

FIG. 12 is a schematic diagram of a plug end structure of a high-speed IO connector assembly in accordance with the present invention;

FIG. 13 is a schematic view of a plug locking housing of the high speed IO connector assembly of the present invention;

FIG. 14 is a cross-sectional view of FIG. 13;

FIG. 15 is a schematic view of a plug housing of the high speed IO connector assembly of the present invention;

FIG. 16 is a schematic diagram of a plug end locking structure of the high-speed IO connector assembly according to the present invention.

[ description of main element symbols ]

1: socket

11: shielding shell

12: insulating shell

121: short pile

122: limiting groove

13: terminal with a terminal body

14: insulating support

141: separate spacing groove

15: net-shaped shielding sheet

16: injection molding plastic

161: convex column

162: card table

163: stop block

2: plug with a locking mechanism

21: plug shell

22: lock catch

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the embodiments, structures, features and effects of the high speed IO connector assembly according to the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1 to 16, which are schematic structural diagrams of parts of a high-speed IO connector assembly according to the present invention, the connector assembly includes a socket 1 and a plug 2 with opposite insertion at a front end, wherein the socket 1 includes at least two rows of terminals 13 arranged at intervals and an insulating housing 12 for accommodating the terminals, and the terminals 13 sequentially include an elastic contact end 131, a terminal main body 132, a bending portion 133 and a surface-mounted end 134 from front to back. The terminals 13 are fixed in a row by injection molding plastic 16.

The end face of the tail part of the insulating shell 12 is provided with at least two rows of short piles 121, each row of short piles 121 corresponds to the surface-mounted end of one row of terminals 13, when the terminals are assembled in place in the insulating shell, the surface-mounted end 134 of each terminal 13 is voltage-equalized on one short pile 121, and the coplanarity of a plurality of terminals in the surface-mounted end 134 in the socket 1 is ensured through the matching of the short piles and the terminals.

In the embodiment of the present invention, two rows of terminals 13 are disposed in the socket 1, two rows of short posts 121 in abutting fit with the terminal surface-mounted ends 134 are disposed on the end surfaces of the tail portions of two opposite walls of the insulating housing 12, respectively, and after the assembly is completed, the short posts 121 abut against the surface-mounted ends of the terminals 13, so as to improve the deviation range of the terminals deviating from the reference plane, and achieve the purpose of improving the coplanarity of a plurality of terminals.

In order to enhance the degree of engagement between the peg 121 and the surface-mounted end 134 of the terminal 13, the bent portion 133 between the main portion 132 and the surface-mounted end 134 of the terminal 13 keeps the surface-mounted end 134 sufficiently resilient so that the peg 121 and the surface-mounted end have a sufficient contact force therebetween. Namely, the invention increases the bending angle of the terminal bending part, thereby ensuring that the surface-mounted end and the short pile have enough holding force.

In the embodiment of the present invention, the extending direction of the surface-mounted end 134 and the extending direction of the main body 132 are perpendicular to each other, that is, the main body extends along a vertical direction, the surface-mounted end 134 extends along a horizontal direction, and the surface of the corresponding stub 121, which is in contact with the surface-mounted end, is a horizontal plane, so that the surfaces of the surface-mounted end 134 and the stub 121, which are in contact with each other, are horizontal planes, and thus a larger reliable contact surface is provided between the stub and the surface-mounted end, and the contact fit between the stub and the surface-mounted end is more stable and reliable.

In the embodiment of the present invention, the width of the bending portion 133 is greater than the width of the surface-mounted end 134, so that the bending portion can ensure the contact force between the surface-mounted end 134 and the stub 121. Specifically, a reducing section 1331 which is adapted to the width change of the bending part and the surface-mounted end is arranged between the bending part and the surface-mounted end, and the reducing section has a gradually shrinking width.

In the embodiment of the present invention, a wall body of the insulating housing 12 corresponding to the elastic contact end 131 of the terminal is further provided with a limiting groove 122 for accommodating the elastic contact end 131 and satisfying an elastic deformation space of the elastic contact end 131, and in the embodiment of the present invention, the limiting groove 122 is a through groove extending along an extending direction of the terminal body. The arrangement of the limiting groove 122 not only restrains the elastic contact ends 131 of the terminals in different grooves and limits the offset degree of the terminals in the width direction, thereby preventing the interference between the terminals in the same row, but also can increase the distribution density of the terminals and reduce the size of the connector.

In the embodiment of the present invention, the socket further includes an insulating support 14 for fixing two rows of terminals, a groove adapted to the convex column 161 on the injection molding plastic 16 of each row of terminals is formed on the insulating support 14, and the two rows of terminals are positioned by matching the convex column 161 with the groove on the insulating support 14. Preferably, the outer periphery of the convex column is also provided with ribs extending along the axial direction. The other side of the injection molding plastic 16 is also provided with a clamping table 162 which is matched and locked with a corresponding opening on the insulating shell 12.

The terminal 13 includes a signal terminal 135 and a ground terminal 136, two adjacent signal terminals form a differential pair, and a row of terminals includes a plurality of differential pairs and a ground terminal 136 for shielding between adjacent differential pairs. In the present embodiment, one ground terminal 136 is disposed on each side of any differential pair.

In the embodiment of the present invention, a mesh-shaped shielding sheet 15 is further disposed between the two rows of terminals, and the mesh-shaped shielding sheet 15 is used to achieve conduction of all the grounding terminals 136, thereby improving the grounding effect. Specifically, the tail of the terminal body of the ground terminal 136 is provided with a concave pit 1361 matched with the contact convex portion 151 extending from the mesh-shaped shielding plate 15, and when the mesh-shaped shielding plate 15 is assembled, the contact convex portions 151 extending from the mesh-shaped shielding plate respectively fall into the concave pits of the corresponding ground terminals, so as to ensure the contact between the two. Preferably, the contact protrusion 151 is formed by folding inward a fin extending from a mesh-shaped shielding sheet, but is not limited thereto.

In order to make the contact between the mesh-shaped shielding sheet 15 and the ground terminals more reliable and prevent the occurrence of virtual contact, the distance between two opposite contact protrusions on the mesh-shaped shielding sheet 15 is slightly larger than the distance between the pits on the two rows of ground terminals, so that the contact protrusions 151 on the mesh-shaped shielding sheet 15 abut against the contact terminals, and in order to prevent the ground terminals from shifting outwards under the extrusion of the mesh-shaped shielding sheet, a stopper 163 is further arranged on the injection molding plastic 16 to block the outside of the ground terminals and prevent the ground terminals from shifting outwards.

In the present embodiment, the mesh-shaped shielding sheet 15 is fixed to the insulating support 14. Preferably, the mesh-shaped shielding sheet 15 is positioned on the insulating support member 14 by matching a folded elastic sheet thereon with a groove on the insulating support member 14. The spring pieces penetrate into the grooves on the insulating support 14 to realize the positioning of the two.

In the embodiment of the present invention, in order to prevent the terminal attaching ends from shifting in the width direction, two sides of the insulating support 14 are further provided with a separation limiting groove 141 for accommodating the terminals, each terminal is located in one separation limiting groove, and the separation limiting groove for accommodating the ground terminal is a through groove through which the mesh-shaped shielding plate contact protrusion passes.

The shielding shell 11 is coated on the periphery of the insulating shell 12, so that the terminal in the insulating shell is shielded in a coating mode. In the embodiment of the present invention, the shielding shell 11 and the insulating shell 12 are detachably assembled by a concave-convex structure. Preferably, all inwards stretch out on two relative wall bodies of shielding shell 11 and have two shell fragments 111 that extend along the not equidirectional, be equipped with two corresponding ladder faces 122 on the lateral wall of insulating shell 12, and the orientation of two ladder faces is opposite to make two shell fragments and the cooperation of ladder face with one side realize respectively that it is spacing along two axial directions between insulating shell and the shielding shell. Preferably, an included angle is formed between a connecting line of the two stepped surfaces 122 on the same side of the insulating housing 12 and an axis of the insulating housing.

When the number of the terminals is 2N, and N is more than or equal to 1, every two rows of terminals are connected into a group through the reticular shielding sheets and the insulating support pieces, and the insulating shell is provided with the short piles corresponding to the terminals, the whole conduction of the grounding terminals in each group of terminals and the improvement of the coplanarity of the surface-mounted ends of the terminals can be still realized.

The plug 2 is matched and locked with the socket shielding shell through a lock catch 22 on the plug shell 21. Specifically, the lock 22 is provided with a lock platform 221, the shielding shell 11 is provided with a corresponding lock groove 112, and when the plug and the socket are inserted, the lock platform 221 and the lock groove 112 are locked in a matching manner, so that the locking of the connector assembly is realized.

The lock catch 22 comprises a fixed support part 222, a locking part 223 and an unlocking part 224, the fixed support part 222 is matched with a corresponding groove on the plug housing to realize the fixation of the lock catch on the plug housing, and provides support for the locking part 223, and the unlocking part 224 is connected to the locking part 223 and can drive the locking part 223 to unlock. The locking platform 221 is located on the locking portion 223.

The fixing support 222 is located on the plug housing and realizes the limit of the left and right sides by the limit protrusion 214 on the plug housing, and the plug housing 21 is further provided with a limit groove 212 for preventing the tail of the fixing support from tilting and realizing the backward movement limit of the tail of the fixing support. In the embodiment of the present invention, there are two limiting grooves 212, which are respectively matched with the edge positions of the tail portion of the fixing support portion 222 to achieve limiting, but not limited thereto.

One end of the locking portion 223 is fixed above the fixed support portion 22, and can be driven by the unlocking portion 224 fixed at the other end to spring up and down. In order to prevent the front end of the lock 22 from tilting, the plug housing 21 is further provided with slots 213 at two sides of the locking portion for inserting the two sides of the front end of the locking portion, the wall body at the upper end of the slot 213 limits the front end of the locking portion upwards, and the wall body at the front end of the slot stops and limits the front end surface of the locking portion, so as to limit the forward movement of the locking portion. Namely, the plug shell realizes the limit of the rear end of the lock catch in all directions through the matching of the limit groove on the plug shell and the two sides of the rear end of the fixed supporting part 22, realizes the limit of the rear end of the lock catch in all directions through the matching of the open groove on the plug shell and the two sides of the front end of the locking part, and prevents the front end and the rear end of the lock catch from tilting and swinging left and right. In the embodiment of the present invention, the slot is located on the convex portion inside the upper end of the limiting protrusion 214, but is not limited thereto.

In the embodiment of the present invention, the locking portion 223 is fixedly supported above the fixing support portion 22 by the arc-shaped bending of the tail portion, in the embodiment of the present invention, the latch 22 is integrally formed, and the tail portion of the latch is further provided with a through hole 225 adapted to the protrusion on the plug housing, the through hole 225 is U-shaped, and sequentially passes through the locking portion, the arc-shaped bending and the fixing support portion from top to bottom, and the U-shaped through hole is matched with the protrusion on the plug housing to enhance the limit of the tail portion of the latch.

In the embodiment of the present invention, the fixing support 222 and the limiting protrusions 214 on both sides of the plug housing are in blocking fit with each other, the locking portion is a spring plate having a plurality of locking stages on the surface, a bending transition of the tail portion exists between the spring plate and the fixing plate, the bending transition width is smaller than the width of the spring plate and the fixing plate, the bending transition is located at the middle position between the spring plate and the fixing plate, and the portions of the tail portion of the fixing plate located at both sides of the bending transition are respectively in concave-convex fit with one limiting groove, so as to realize the up-down and axial backward limiting. The unlocking part is an unlocking piece fixed at the front end of the elastic piece, the positions of the elastic piece, which are positioned at the two sides of the unlocking piece, extend forwards (along the axial direction of the plug) to form a fin 2231 matched with the groove, and the upper end and the front end of the fin are respectively propped against different positions of the groove, so that the forward and upward limiting of the lock catch is realized.

When the locking part moves downwards to the unlocking state, at least part of the fin is still positioned in the open slot.

When the plug shell is assembled, the lock catch structure on the plug shell can be directly pushed between the limiting bulges on the plug shell along the axial direction of the plug shell, and meanwhile, the unlocking part is pressed to enable the locking part to be downwards bounced to pass over the convex parts on the upper parts of the limiting bulges and enter the open groove. The lock catch structure is simple to assemble, when the lock catch structure needs to be disassembled, only the unlocking part needs to be continuously pressed, so that the locking part is completely separated from the groove, the lock catch structure can be disassembled, the lock catch and the plug shell cannot be adversely affected, and the re-assembly and use of the lock catch and the plug shell cannot be affected.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The high-speed IO connector capable of improving the coplanarity of the terminals is characterized by comprising at least two rows of terminals arranged at intervals, an insulating shell used for containing the terminals and a shielding shell coated on the periphery of the insulating shell, wherein at least two rows of short piles are arranged on the end face of the tail part of the insulating shell, and each row of short piles are in top press fit with the surface-mounted end of one row of terminals so as to ensure the coplanarity of the terminals in the surface-mounted end of the connector.

2. A high speed IO connector according to claim 1, wherein the terminal includes, from front to back, an elastic contact end, a terminal body, a bending portion and a surface-mounted end, and the bending portion enables the surface-mounted end to maintain a contact force with the stud.

3. A high speed IO connector with improved coplanarity of terminals as claimed in claim 2 wherein said terminal body extends axially along the connector and said terminal stud is perpendicular to the terminal body such that the contact of the terminal stud with the terminal stud is surface contact.

4. A high speed IO connector with improved coplanarity of terminals as recited in claim 3, wherein said bending portion has a width greater than that of the surface-mounted terminal, and a tapered section is provided between the bending portion and the surface-mounted terminal to accommodate the width variation of the two.

5. A high speed IO connector according to claim 2, wherein a limiting groove for accommodating the elastic contact end of each terminal is further formed on the side wall of the insulating housing corresponding to each row of terminals, and the limiting groove extends to a depth that can meet the elastic deformation of the elastic contact end.

6. A high-speed IO connector with improved coplanarity of terminals as recited in claim 5, wherein said limiting slot is a through slot extending lengthwise along the direction of extension of the terminal body.

7. The high-speed IO connector of claim 1, wherein the terminals are fixed in a row by injection molding plastic, and two rows of the terminals are fixed together by an insulating support, and the insulating support is provided with separation limiting grooves on two sides thereof for adapting to the terminals.

8. The high-speed IO connector capable of improving coplanarity of terminals as claimed in claim 7, wherein each row of terminals is fixed by the engagement of the protruding columns on the injection-molded plastic and the corresponding grooves on the insulating supporting member.

9. A high speed IO connector with improved coplanarity of terminals as in claim 8 wherein said plastic injection molding is further provided with a locking platform on the other side for locking with the corresponding opening of the insulation housing.

10. A high-speed IO connector assembly, its connector and adapter connector that includes the front end is inserted to its characterized in that: wherein the connector is as claimed in any one of claims 1 to 9.