CN114824959B - Shielding piece bending structure, terminal module and connecting structure - Google Patents

Abstract

The invention relates to a shielding sheet bending structure, a terminal module and a connecting structure, wherein the shielding sheet bending structure comprises a shielding sheet for realizing shielding at one side of the terminal module, a plurality of bends for accommodating differential signal pair inserting ends and realizing shielding between adjacent differential signal pair inserting ends are arranged on the shielding sheet, and the bends are staggered at intervals along the arrangement direction of the differential signal pair inserting ends. According to the invention, the bending is arranged on the shielding sheet at intervals of one differential signal pair, so that the differential signals of the same terminal module are distributed at intervals between the inside and the outside of the bending, and the shielding requirement is met while the bending forming requirement is met.

Description

Shielding piece bending structure, terminal module and connecting structure

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a shielding sheet bending structure, a terminal module with the shielding sheet bending structure and a connecting structure with the terminal module.

Background

The terminal module of the existing high-speed connector is usually used for realizing shielding between the differential signal pairs at the plugging end by directly arranging a grounding terminal or bending a shielding sheet, but is limited by the distance between the signal terminals when the shielding sheet is bent, so that the bending width is insufficient, the comprehensive shielding between the adjacent signal pairs cannot be realized, and additional parts are required to be added to achieve the shielding effect.

Disclosure of Invention

In order to solve the problems, the invention provides the shielding sheet bending structure, which is characterized in that the shielding sheet is staggered with one differential signal pair to be bent at intervals, and the bending can accommodate one differential signal pair, so that the two sides of the differential signal pair are fully shielded, and the shielding effect can be achieved without the cooperation of other components.

The aim and the technical problems of the invention are realized by adopting the following technical proposal. According to the shielding sheet bending structure provided by the invention, the shielding sheet comprises a shielding sheet for realizing shielding at one side of a terminal module, a plurality of bends for accommodating the insertion ends of differential signal pairs and realizing shielding between the insertion ends of adjacent differential signal pairs are arranged on the shielding sheet, and the bends miss one differential signal pair at intervals along the arrangement direction of the insertion ends of the differential signal pairs, so that the differential signal pairs positioned in the bends and the differential signal pairs without bending surrounding are arranged at intervals in the same terminal module.

The aim and the technical problems of the invention can be further realized by adopting the following technical measures.

The shielding sheet bending structure further comprises shielding sheets for realizing shielding of the other side of the terminal module, wherein the bending on the two shielding sheets is distributed in the arrangement direction of the differential signal pairs in a staggered manner, so that the inserting ends of each differential signal pair are located in one bending, and the inserting ends of two adjacent differential signal pairs are located in different shielding sheet bending.

According to the shielding sheet bending structure, the bending on one shielding sheet is contacted with the other shielding sheet, so that the differential signal pair in the bending can be better shielded in the signal transmission process, and high-speed signal transmission is realized.

According to the shielding sheet bending structure, the notch corresponding to the bending of the other shielding sheet is further formed between the adjacent bending of the shielding sheets, and the bending tail of the other shielding sheet is extended to form the protrusion contacting with the side wall of the notch, so that the two shielding sheets can be conveniently contacted and fixed and the inserting end can be conveniently inserted and matched.

According to the shielding sheet bending structure, the bulges are formed by bending the folded edges at the two sides and extending backwards along the direction of the insertion ends of the differential signal pairs.

The shielding sheet bending structure is characterized in that the bending is in contact with the other shielding sheet in a welding mode.

According to the shielding sheet bending structure, the number of pairs of differential signal pairs in the terminal module is even, and the structures of the two shielding sheets are identical, so that the assembling direction and the using direction do not need to be distinguished in the assembling and using processes of the terminal module, and the assembling and the using are more convenient.

According to the shielding sheet bending structure, the two ends of the differential signal pair in the terminal module are both insertion ends, and the two ends of the shielding sheet are respectively provided with corresponding bending.

According to the shielding sheet bending structure, the shielding sheet is further staggered, a plurality of bends for accommodating the crimping ends of the differential signal pairs are distributed on the shielding sheet, and the crimping parts at the front ends of the crimping ends of the differential signal pairs extend out to be bent.

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

According to the invention, the bending is arranged on the shielding sheet at intervals of one differential signal pair, so that the differential signals of the same terminal module are distributed at intervals between the inside and the outside of the bending, and the shielding requirement is met while the bending forming requirement is met. When two shielding sheets are arranged, the two shielding sheets are bent in a staggered manner, so that signal pairs in one shielding plate bending and signal pairs in the other shielding plate bending are distributed in a staggered manner, and the terminal module is balanced in overall stress during use, good in shielding effect and good in signal transmission performance of an insertion area.

Drawings

FIG. 1 is a schematic overall construction of an adapter;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the upper housing structure of the adapter;

FIG. 4 is another view of FIG. 3;

FIG. 5 is a schematic view of a terminal module;

FIG. 6 is another view of a terminal module;

fig. 7 is a schematic view of a terminal module from another view;

fig. 8 is a schematic view of the terminal module with the shield strips removed;

fig. 9 is another view of the terminal module with the shield strips removed;

Fig. 10 is a schematic view of a terminal module from a further view with the shield strips removed;

Fig. 11 is a cross-sectional view of the terminal module with the shield strips removed;

Fig. 12 is a schematic view of a shield sheet structure;

FIG. 13 is a schematic view of a shield in another view;

FIG. 14 is a schematic view of a shielding sheet in yet another view direction;

FIG. 15 is an enlarged view of a portion of FIG. 1;

FIG. 16 is an enlarged view of a portion of FIG. 5;

[ Main element symbols description ]

1: Shell body

11: Upper shell

111: Cantilever arm

112: Boss

113: Clamping groove

114: Groove

115: Signal positioning hole

116: Lock groove

12: Lower shell

2: Terminal module

21: Terminal for connecting a plurality of terminals

211: Differential signal pair

213: Hot riveting column

214: Slotting

22: Shielding sheet

221: U-shaped bending

2211: Hemming edge

222: Protrusions

223: Notch

23: Insulation body

231: U-shaped fixing groove

232: Straight section

233: Guide arm

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the invention, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the invention with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-16, which are schematic views of the structure of each part of an adapter according to an embodiment of the present invention, the adapter includes a housing 1 and a plurality of terminal modules 2 assembled in rows in the housing 1, each terminal module 2 includes a terminal 21, an insulator 23, and a shielding sheet 22, wherein the terminal 21 is located in the insulator 23, the node distance of each terminal 21 is kept constant by the insulator 23, and the shielding sheet 22 is covered on one side of the insulator 23 for shielding the terminal 21 on the side.

The terminals 21 include signal terminals, two adjacent signal terminals form a differential signal pair 211, in this embodiment of the present invention, two ends of the differential signal pair 211 are insertion ends, two ends of the shielding sheet 22 are provided with bends for accommodating the insertion ends of the single differential signal pair 211, in this embodiment of the present invention, the bends are U-shaped bends 221, the U-shaped bends 221 include two folds 2211 and a bottom side 2213, the bottom side 2213 is a portion of the shielding sheet 22 corresponding to the differential signal pair 211, and the folds 2211 are formed by bending portions of the shielding sheet located at two sides of the bottom side 2213 toward the differential signal pair. Therefore, the insertion ends of the differential signal pairs 211 of the U-shaped bending pair form semi-enclosed shielding, and shielding between the insertion ends of adjacent differential signal pairs and between adjacent terminal modules is achieved. Preferably, the front end surface of the folded U-shaped bend 221 protrudes out of the front end surface of the insertion end of the differential signal pair, so as to ensure the shielding effect.

In order to solve the problem that two folds 2211 cannot be formed at the same time at the position between adjacent signal pairs on the shielding sheet 22 due to the limitation of the space between the signal pairs, in the embodiment of the invention, in the arrangement direction of the differential signal pairs 211 in the terminal module 2, the U-shaped folds 221 are spaced by one differential signal pair position distribution, so that one of the inserting ends of the adjacent differential signal pairs 211 is located in the corresponding U-shaped fold 221, and the other one is not provided with the corresponding U-shaped fold 221, but the folds 2211 on two sides of the U-shaped fold 221 can realize the separation between the inserting ends of the adjacent differential signal pairs 211, thereby realizing the shielding between the inserting ends of the adjacent signal pairs. In the embodiment of the present invention, in order to reliably enclose the insertion ends of the differential signal pair, the folded edges 2211 have a sufficient width, so that a notch 223 is formed between the adjacent U-shaped folds 221 due to the processing of the folded edges 2211. Preferably, the tail of the U-shaped bend 221 is further provided with a protrusion 222 extending backward along the mating end of the differential signal pair.

The U-shaped bending 221 on the shielding sheet 22 is arranged, so that the purpose of shielding protection of a single terminal module can be realized through only one shielding sheet 22, and the shielding effect can be realized without adding other parts. Preferably, the U-shaped bends 221 at two ends of a single shielding sheet 22 are staggered along the arrangement direction of the differential signal pair 211, so that two insertion ends of the same differential signal pair are located in the U-shaped bends 221 on the shielding sheet 22, and the shielding sheet 22 has no U-shaped bend 221 matched with the other insertion end, i.e. the shielding sheet 22 has a 180-degree rotationally symmetrical structure, so that two ends of the shielding sheet can be randomly exchanged without distinction during assembly, but the invention is not limited thereto.

The terminal module 2 may have the shielding sheet 22 disposed only on one side of the direction perpendicular to the arrangement direction of the differential signal pairs 211, or may have the shielding sheet 22 disposed simultaneously on both sides of the direction perpendicular to the arrangement direction of the differential signal pairs 211. When the shielding sheet 22 exists only on one side of the terminal module, the insertion ends of the differential signal pairs 211 in the single terminal module 2 are surrounded by the U-shaped bends and the staggered distribution without the U-shaped bends, thereby not only realizing shielding between the insertion ends of adjacent signal pairs, but also solving the problem that the shielding sheet material between the adjacent differential signal modules is insufficient and two folds 2211 cannot be formed simultaneously due to the distance limitation between the adjacent differential signal pairs caused by the continuous arrangement of the U-shaped bends 221 on the shielding sheet 22 (each differential signal pair has a corresponding U-shaped bend).

In the embodiment of the invention, shielding sheets 22 are simultaneously arranged on two sides of a single terminal module 2, and the bending directions of the folded edges 2211 of the U-shaped bending 221 on the two shielding sheets 22 are opposite and are bent towards the direction of the terminal, so that the U-shaped bending of the same end of the two shielding sheets 22 is distributed in a staggered manner in the arrangement direction of the differential signal pairs 211, the inserting end of each differential signal pair is positioned in the corresponding U-shaped bending 221, the shielding effect of the single module is enhanced, the whole stress of the terminal module 2 is balanced, and the problem of unbalanced stress of the terminal module during use and assembly can be effectively solved.

In the embodiment of the invention, the root parts of the two folds 2211 of the U-shaped bend 221 extend backwards to form a protrusion 222, a notch 223 corresponding to the U-shaped bend on the other shielding sheet is further provided at the position between the adjacent U-shaped bends 221 on the shielding sheet 22, when the shielding sheets on both sides of the terminal module are assembled, the protrusion 222 at the root part of the U-shaped bend of one shielding sheet enters the notch 223 of the other shielding sheet, and the two shielding sheets are contacted by the cooperation of the protrusion at the U-shaped bend and the notch 223. Preferably, the protrusion 222 is in contact with the sidewall of the notch 223 by welding, but is not limited thereto. The U-shaped bent tail protrusion 222 and the notch 223 of the other shielding sheet are assembled and welded together in a welding mode, so that the transmission of differential pair signals in the U-shaped can be better shielded in the signal transmission process, and high-speed transmission is realized.

In an embodiment of the present invention, under the condition that the node distance between the differential signal pairs is unchanged, the present invention can form a terminal module with the differential signal pairs with unchanged node distance by buckling two shielding sheets 22 and the U-shaped bends 221 distributed at the end portions thereof at intervals, and at any end of the terminal module, the U-shaped bends 221 with opposite bending directions of the folded edges 2211 are distributed in a staggered manner along the arrangement direction of the differential signal pairs in the terminal module.

Preferably, the number of the differential signal pairs 211 is 2N (N is greater than 0), so that the two shielding plates 22 of the terminal module have identical structures, and the bends at two ends of each shielding plate are staggered along the arrangement wind direction of the differential signal pairs, that is, the positions corresponding to two ends of the unified differential signal pair, wherein one end has corresponding bends, the other end has no corresponding bends, and the shielding plates have 180-degree rotationally symmetrical structures, so that the shielding plates do not need to distinguish the installation directions of the two ends during assembly. In the embodiment of the invention, the shielding sheets with identical structures are adopted at the two sides of the terminal module, so that errors generated during processing and assembling of the shielding sheets can be reduced, and the processing and assembling are more convenient.

Through the reverse buckling of the two identical shielding sheets 22 on the two sides of the differential signal pair with the unchanged node distance, the assembly of one terminal module can be completed under the conditions of ensuring that the node distance of the 2N pair differential signal pair is unchanged and improving the signal transmission rate, and in the assembly and use process of the terminal module, the assembly direction and the use direction of the differential signal pair 211 do not need to be distinguished, so that the assembly and the use are convenient.

In the embodiment of the invention, the number of the differential signal pairs 211 is 4, the node distance between the 4 differential signal pairs 211 is kept unchanged through the insulator 23, two identical shielding sheets 22 are respectively covered on one side of the injection molding insert, two ends of each shielding sheet 22 are respectively provided with 2U-shaped bends 221 at intervals of one differential signal pair, and the shielding sheets 22 are in 180-degree rotationally symmetrical structures, so that two inserting ends of the same differential signal pair are respectively positioned in the U-shaped bends on different shielding sheets 22. When two shielding sheets are buckled, the U-shaped bending on one shielding sheet is contacted with the notch 223 of the other shielding sheet through the tail protrusion 222 of the U-shaped bending, 4U-shaped bending are distributed in the distribution direction of the signal pairs, the inserting ends of the 4 signal pairs are respectively accommodated in the corresponding U-shaped bending, and the adjacent signal pairs are positioned in the bending of different shielding sheets, so that the integrity of the signal transmission of the 4 differential pairs is ensured, and the 4 differential pairs form a terminal module.

In other embodiments of the present invention, the shield plate bending may be other structures having semi-enclosed shield cavities capable of accommodating the mating ends of differential signal pairs.

In the embodiment of the present invention, the insulator 23 is an injection molding insert, and the terminal 21 and the injection molding insert are formed into a primary injection molding module by injection molding. The other positions of the plugging end of the terminal 21 except the contact surface (the surface contacted with the terminal of the adapting end) are all wrapped by adopting a plastic injection molding mode, namely, the fixation of the plugging end of the terminal is realized by wrapping the part of the plugging end of the terminal 21 outside the contact surface with plastic, the fixation of the terminal 21 at the contact end can be enhanced while the contact surface of the plugging end is effectively avoided, so that the stability of the terminal 21 is enhanced, and the contact of the plugging end is more reliable.

To prevent excess plastic from overflowing to the mating end contact surface of the terminal 21 during injection molding, contact of the terminal is affected, at least one side surface of the mating end of the terminal 21, which is connected with the contact surface 215, is at least partially free of plastic wrap, i.e., at least one side of the two side surfaces, which is at least adjacent to the contact surface 215, is free of plastic wrap, so as to prevent excess plastic from overflowing to the contact surface 215. Therefore, the part of the injection molding insert wrapping the terminal inserting end is at least provided with one long groove, the long groove is positioned at the side surface of the terminal opposite to the adjacent terminal, the opening direction is the same as the contact surface, the long groove extends along the length direction of the terminal inserting end, the extending length is not less than the length of the terminal which needs to be matched with the opposite inserting end, and the front end of the long groove is at least flush with the head of the terminal. The long groove enables the surface of the terminal inserting end, which is connected with the contact surface, to have a part without plastic wrap, and the part of the side surface, which is connected with the contact surface, is exposed to the air. The long groove is a through groove or a blind groove, when the long groove is a through groove, the side face of the long groove is completely exposed to the air, and when the long groove is a blind groove, only the part of the side face of the long groove, which is far away from the contact surface, is exposed to the air.

In order to improve the transmission performance of the terminal 21, in the embodiment of the invention, the injection molding inserts on the two sides of the terminal adjacent to the contact surface 215 are provided with long grooves, and the sides of the two sides near the contact surface 215 are not covered by plastic and are exposed to the air. And the two terminals forming one differential signal pair 211 are provided with a plurality of side surfaces adjacent to the contact surface 215, two side surfaces which are defined to be connected with the contact surface 215 are respectively a first side surface 216 and a second side surface 217, wherein the first side surface 216 is a surface adjacent to the other terminal, and the second side surface 217 is a surface opposite to the other terminal. The surface opposite to the contact surface 215 is defined as a third side surface 218, and the first side surface 216, the second side surface 217, and the third side surface 218 extend in the mating direction.

The elongated slot at the first side 216 is a first elongated slot 2311, and the first elongated slot 2311 is a through slot, such that all of the first side 216 is exposed to air without any plastic wrap. The elongated slot at the second side 217 is a second elongated slot 2313, and the second elongated slot 2313 is a blind slot that is opened toward the contact surface 215, so that only a portion of the second side 217 that contacts the contact surface 215 is exposed to air, and a portion that is away from the contact surface 215 is covered with plastic. In the embodiment of the present invention, the first elongated slots 2311 at the first sides of the two terminals forming the same differential signal pair are communicated, so that a through slot is formed between the two terminals, and the through slot exposes the first sides of the two terminals to the air. In the embodiment of the present invention, the extension length of the first elongated slot 2311 along the insertion direction is smaller than the extension length of the second elongated slot 2313 along the insertion direction.

An elongated slot is also formed in the third side 218 of the terminal, which slot is a blind slot that exposes a portion of the third side 218 of the terminal to the air, and which slot enables impedance adjustment. In the embodiment of the present invention, the elongated slots formed at the third side 218 include a third elongated slot 2314 extending along the terminal insertion direction and fourth elongated slots 2315 spaced apart along the terminal insertion direction. The third slot 2314 allows the third side of the terminal to be exposed to the air without plastic wrapping on the side of the terminal adjacent to the other terminal. Preferably, the third elongated slot 2314 has the same extension length as the first elongated slot 2311, and the third elongated slot 2314 is communicated with the first elongated slot 2311 to form a stepped slot extending in the thickness direction of the terminal.

The fourth elongated slot 2315 is a blind slot that is communicated with the third elongated slot 2314, preferably, two fourth elongated slots 2315 are arranged at the third side of each terminal, the fourth elongated slots 2315 further enlarge the area of the third side 218, which is exposed in the air and is free of plastic wrapping, so that impedance can be adjusted, space can be provided for auxiliary tools for supporting the terminals during injection molding of the terminals, the position of the terminals during injection molding is relatively stable, the terminals are not easy to bend, and the injection molding quality of the terminals is improved.

In the embodiment of the present invention, the surface of the second elongated slot 2311 connected to the second side is an inclined surface 23111.

The long groove can effectively prevent the excessive plastic produced by injection molding of the inserting end of the terminal from overflowing to the contact surface of the terminal, can increase the contact area of the terminal and air, can adjust the impedance of the terminal, is beneficial to the contact of the terminal of the inserting end and is beneficial to the transmission of performance.

In the embodiment of the present invention, in order to ensure the stability of the plugging ends of the differential signal pairs, the front end of the injection molding insert is formed with a terminal fixing portion for wrapping the plugging ends of the differential signal pairs, preferably, the terminal fixing portion is a U-shaped fixing slot 231, the plugging ends of each differential signal pair are all injection molded and wrapped in the U-shaped fixing slot 231, the first elongated slot 2311 at the first side 216 of the two signal terminals is conducted mutually so that the bottom of the U-shaped fixing slot 231 has a through hole, and the third elongated slot 2314 and the fourth elongated slot 2315 at the third side of the two signal terminals are both located on the opposite sides of the bottom and the ends of the U-shaped fixing slot 231.

After the terminals are injection molded with the injection molding insert, the third slot 2314 allows the third side 218 of the two terminals 21 that make up one signal pair to be free of plastic wrap on the side closer to the other terminal, exposed to air, and plastic wrap on the side farther from the other terminal. The first side surface 216 of the single terminal is not covered with plastic due to the arrangement of the first long groove 2311, the second side surface 217 is covered with plastic on only one side far from the contact surface 215 due to the existence of the second long groove 2313, that is, a portion of the second side surface 217 close to the bottom of the U-shaped fixing groove 231 (a portion not connected with the contact surface) is covered with plastic, and a portion far from the bottom of the fixing groove (a portion connected with the contact surface) is covered with no plastic, that is, a space is provided between the terminal and the wall of the U-shaped fixing groove.

In the embodiment of the present invention, after the shielding plate 22 is assembled in place, the U-shaped fixing groove 231 is accommodated in the corresponding U-shaped bend 221, and the U-shaped fixing groove 231 and the U-shaped bend 221 are further limited by the cooperation of the concave-convex structure, so that the two are prevented from moving or deflecting relatively under the vibration environment or the action of the insertion force, thereby ensuring the constant distance between the differential signal pair and the shielding, and ensuring the transmission of the signal performance. In other embodiments of the present invention, the shield plate bending and the terminal fixing portion also have an adapted structure, that is, the terminal fixing portion is accommodated in the shield plate bending after the shield plate is assembled in place, and the limit is achieved by the concave-convex structure cooperation. That is, the bending of the shielding piece and the terminal fixing portion are not limited to the U-shaped structure of the present invention.

In the embodiment of the present invention, the positioning between the U-shaped fixing groove 231 and the U-shaped bending 221 is achieved by a fastening structure on two side wall bodies. Specifically, the outer surfaces of the two side walls of the U-shaped fixing groove 231 are protruded with clamping blocks 2312, the two side walls of the U-shaped bending groove 221 are provided with corresponding clamping openings 2212, and the clamping blocks and the clamping openings are matched to enable the shielding plates at the plugging ends to be firmly and reliably buckled on the plastic, so that the constant distance between the differential signal pair and the shielding plates is ensured.

In other embodiments of the present invention, the terminal fixing portion of the injection molding insert formed at the mating end is not limited to the U-shaped fixing groove 231 structure, only for satisfying the fixing requirement of the mating end of the differential signal pair. The positional relationship between the first, second, third and fourth elongated grooves and the terminal insertion end is unchanged regardless of the overall structure of the terminal fixing portion. The surface of the injection molding insert is provided with a plurality of hot riveting columns 213, the shielding sheet 22 is provided with holes corresponding to the hot riveting columns 213, and the shielding sheet 22 is fixed with the injection molding insert through a hot riveting process when the injection molding insert is assembled.

In the embodiment of the present invention, the rivet studs 213 are distributed on at least one side of the differential signal pair trace portion, and are uniformly distributed at intervals on one side of the differential signal pair trace portion. In order to ensure the fitting degree and the fixing reliability between the U-shaped fixing groove 231 and the U-shaped bending 221 of the shielding sheet, the U-shaped fixing groove 231 and the U-shaped bending 221 are also subjected to hot riveting fixing through the hot riveting column 213. Preferably, the injection molding insert is further provided with a hot riveting column 213 at a position close to the tail of the U-shaped fixing groove 231 for fixing the U-shaped fixing groove 231 and the U-shaped bending 221, and the shielding and injection molding insert are tightly attached to each other at the insertion end due to the arrangement of the hot riveting column 213. According to the invention, the terminal fixing part (U-shaped fixing groove) and the shielding sheet are bent at a position close to the tail part (the position where the terminal fixing part is connected with the injection molding insert main body/the position where the shielding sheet is bent and connected with the shielding sheet main body) to be subjected to hot riveting and fixing, so that the fixing and the bonding between the terminal fixing part and the shielding sheet main body can be ensured, the terminal inserting and combining area can be avoided, and the influence on the terminal performance is avoided.

According to the invention, the thermal riveting point of the inserting end and the buckle at the U-shaped bending part of the shielding sheet and the plastic ensure that the shielding sheet and the plastic are bonded without gaps, so that the distance between the terminal and the shielding sheet is ensured to be certain, and the transmission of signal performance is facilitated.

In the embodiment of the invention, the insertion end portion of the terminal 21 is wrapped by plastic, and the insertion end of the terminal guides the opposite insertion end into the insertion surface of the terminal by the plastic wrapping the end portion of the terminal, so as to realize opposite insertion. Specifically, the plastic of the wrapping terminal plugging end part is a horizontally extending straight section 232 located at the front end of the plugging end part, so as to ensure that the plugging end can be correctly plugged, and prevent the occurrence of offset plugging or misplug. The front end surface of the straight section 232 is an inclined chamfer 2321 with guiding function, and both sides and upper and lower end surfaces of the front end of the straight section 232 are provided with the inclined chamfer 2321 for guiding so as to facilitate better guiding the insertion end to enter.

The edge position of the rear end of the straight section 232 is respectively longer than a guiding arm 233 used for preventing the opposite inserting end from deflecting in the inserting process along the length direction, one side of the guiding arm close to the terminal is provided with a guiding inclined surface 2331 gradually approaching to the terminal from front to back, and the guiding inclined surface 2331 can guide the opposite inserting end terminal to move towards the terminal inserting surface so as to ensure effective contact of the terminal.

In the embodiment of the invention, the guiding arm 233 is an L-shaped plastic wall, the horizontal section at the front end is connected with the end of the flat section 232, the vertical section at the rear end is blocked at the outer side of the terminal, the inner side of the vertical section is provided with the guiding inclined plane 2331, and a groove is further formed between the inner side of the vertical section and the upper part of the side wall of the terminal, so as to prevent the plastic of the vertical section from overflowing to the contact surface at the upper surface of the terminal, and the contact effect is affected.

In the embodiment of the present invention, the housing 1 is formed by buckling the front ends of the upper housing 11 and the lower housing 12, specifically, the front end faces of the upper housing 11 and the lower housing 12 are abutted, and the convex-concave matching locking is implemented by the boss 112 on the outer side of the cantilever 111 where the front end of one end extends out and the clamping groove 113 distributed on the periphery of the other end. Preferably, the upper case 11 and the lower case 12 have the same structure, and cantilever 111 and slot 113 are distributed on them. The outer circumferences of the upper and lower housings 11 and 12 are also provided with locking grooves 116 for locking with the mating connector, but are not limited thereto.

In the embodiment of the present invention, the upper housing 11 and the lower housing 12 are both in structures with open front ends and closed rear ends, and signal positioning holes 115 for allowing the insertion ends of the differential signal pairs to pass through are formed in the tail end surfaces of the upper housing 11 and the lower housing 12, the signal positioning holes 115 can limit the U-shaped bends 221 accommodating the differential signal pairs 211, and the size of the signal positioning holes 115 is slightly larger than the size of the U-shaped bends 221, so that the signal positioning holes 115 can limit the deflection of the insertion ends of the differential signal pairs 211. In order to prevent interference during assembly, an avoidance groove 116 for avoiding the position of the shielding sheet 22 in thermal riveting with the plastic at the U-shaped bending 221 is formed at the corresponding position of the signal positioning hole 115.

In the embodiment of the present invention, grooves 114 that are matched with the housing at the adapting end to realize the identification of the plugging direction and the limit of the deflection are also arranged on the tail end surfaces of the upper housing 11 and the lower housing 12 at intervals.

The invention also provides a connector, one end of the connector is an inserting end, the other end of the connector is a crimping end, and the structure of the inserting end of the connector is identical to that of the adapter. The differential signal pair of the crimping end of the connector can also be accommodated in the U-shaped bending of the shielding sheet, and at the moment, the crimping part of the crimping end of the differential signal pair extends out of the U-shaped bending.

In the embodiment of the invention, the terminals are all signal terminals. The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.

Claims (8)

1. The utility model provides a shielding piece bending structure, its includes the first shielding piece that is used for realizing terminal module one side shielding, its characterized in that: the first shielding sheet is provided with a plurality of bends for accommodating the differential signal pair insertion ends and realizing shielding between the adjacent differential signal pair insertion ends, and the bends are arranged at intervals in the arrangement direction of the differential signal pair insertion ends; the second shielding sheets are used for realizing shielding at the other side of the terminal module, and the bending on the two shielding sheets are distributed in a staggered manner in the arrangement direction of the differential signal pairs, so that the inserting ends of the adjacent differential signal pairs are positioned in the bending of the different shielding sheets; gaps are formed between adjacent bending parts of any one of the first shielding sheet and the second shielding sheet, and protrusions which are in contact with the side walls of the gaps on the other shielding sheet extend out of the bending tail parts of one shielding sheet.

2. The shield-blade bending structure of claim 1, wherein: the bending on one shielding sheet is in contact with the other shielding sheet in a welding mode.

3. The shielding fin bending structure according to claim 1 or 2, wherein: the two shielding sheets in the terminal module are identical in structure.

4. The shield-blade bending structure of any of claims 1-2, wherein: and two ends of the differential signal pair in the terminal module are insertion ends, and two ends of the first shielding sheet and two ends of the second shielding sheet are respectively provided with corresponding bending.

5. The shield-blade-bending structure of claim 4, wherein: the first shielding sheet and the second shielding sheet are of 180-degree rotationally symmetrical structures.

6. The shielding fin bending structure according to claim 1 or 2, wherein: and in the first shielding sheet and the second shielding sheet, one differential signal pair is staggered on any shielding sheet, a plurality of bends for accommodating the crimping ends of the differential signal pairs are distributed, and crimping parts of the front ends of the crimping ends of the differential signal pairs extend out and bend.

7. A terminal module, characterized in that: comprising a terminal, an injection molding insert and a shield lug bending structure as claimed in any one of claims 1 to 6.

8. A connection structure, characterized in that: the terminal module is characterized in that a signal positioning hole for limiting bending is formed in the inserting end of the shell.