CN114824958A - Shielding piece fixing structure and connector - Google Patents

Abstract

The invention relates to a shielding part fixing structure and a connector, wherein the shielding part fixing structure comprises a terminal, an injection molding insert and a shielding sheet, the shielding sheet is provided with a bend for accommodating a differential signal pair plug-in end and realizing shielding between adjacent differential signal pairs, and the bend skips one differential signal pair in the arrangement direction of the differential signal pairs and is distributed at intervals; the plastic wrapping the insertion ends of the differential signal pairs forms terminal fixing parts, and the terminal fixing parts are positioned in the matched bends through the buckling structures so as to prevent relative displacement between the differential signal pairs and the shielding sheets. According to the invention, the insertion end is wrapped with the plastic, so that the stability of the signal pair to the insertion end is enhanced, meanwhile, the bending of the shielding piece realizes the comprehensive shielding between the signal pair, and the shielding effect between the signal pair is ensured, meanwhile, the plastic and the bending are fixedly connected, so that the distance and constancy between the insertion end terminal and the shielding piece are ensured, and the transmission of the shielding effect and the signal performance is ensured.

Description

Shielding piece fixing structure and connector

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a shielding part fixing structure and a connector.

Background

The terminal realizes the shielding through the shielding piece of its one side, and in the district of inserting to close, through often bending or setting up of shielding piece add other parts and realize the shielding between the signal terminal, nevertheless because the terminal end of inserting to close is cantilever form and stretches out, makes from this and inserts to close or in vibration environment at the connector, the terminal end of inserting to close can appear the swing, makes from this, has relative displacement between signal terminal and the corresponding shielding piece to influence the transmission of shielding effect and signal performance.

Disclosure of Invention

In order to solve the above problems, the present invention provides a fixing structure for a shielding element, which fixes an insertion end by plastic wrapping an area outside a contact surface of a terminal, and fixes a terminal fixing portion formed by plastic wrapping the insertion area of the terminal in a bend of a shielding sheet, so that the insertion end of the terminal and the shielding are relatively stable, and transmission of signal performance is facilitated.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the shielding piece fixing structure provided by the invention, the shielding piece fixing structure comprises a terminal 21, an injection molding insert 23 and a shielding piece 22, wherein the shielding piece 22 is provided with a bend 221 used for accommodating the insertion ends of the differential signal pairs 211 and realizing shielding between the adjacent differential signal pairs 211, the injection molding insert 23 wraps plastic of the insertion ends of the differential signal pairs of the terminal to form a terminal fixing part, and the terminal fixing part is positioned in the matched bend 221 through a buckling structure so as to prevent relative displacement between the terminal and the shielding piece 22.

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

In the fixing structure of the shielding element, the bent portion 221 and the terminal fixing portion are further fixed by hot riveting through the hot riveting column 213, so as to ensure that the shielding plate and the plastic are attached seamlessly.

In the fixing structure of the shielding member, the bent portion 221 and the terminal fixing portion are hot-riveted at a position close to the tail portion, so as to ensure seamless attachment of the shielding plate and the plastic.

In the above-described shield fixing structure, the terminal fixing portion is the fixing groove 231, and the fixing groove 231 is positioned by the engagement of the locking steps 2312 on the outer sides of the two side walls and the bayonet 2212 on the bent portion 221.

In the foregoing shielding fixing structure, in the contact area of the two terminal insertion ends forming a differential signal pair, a surface opposite to the other terminal is a first side surface 216, a surface opposite to the other terminal is a second side surface 217, and a surface opposite to the contact surface 215 is a third side surface 218, so that a first long groove for exposing the first side surfaces 216 of the two terminals to the air is disposed at the bottom of the fixing groove 231; the inner sides of two side walls of the fixed groove are also provided with second long grooves which enable the second side surfaces 217 of the two terminals to be exposed in the air; the connection part between the contact area of the insertion end of the differential signal pair 211 and the contact surface 215 is not wrapped by plastic, so that the excessive plastic is prevented from overflowing to the contact surface during injection molding to influence the contact effect.

In the shielding member fixing structure, the surface of the bottom of the fixing groove, which is opposite to the terminal, is further provided with the long groove which enables the third side surfaces of the two terminals to be partially exposed in the air, so as to meet the performance requirement of the high-speed connector.

In the above-mentioned fixing structure for the shielding member, the shielding plates 22 are disposed on both sides of the terminal module 2, and the bends on the two shielding plates 22 are distributed in the arrangement direction of the differential signal pairs 211 in a staggered manner, so that the insertion ends of the adjacent differential signal pairs 211 are respectively located in the bends 221 of different shielding plates.

In the shield fixing structure, the bent portion 221 of one shield plate 22 is in contact with the other shield plate 22.

In the fixing structure of the shielding element, the plug-in terminal of the differential signal pair 211 is further covered with a plastic for guiding the plug-in terminal into the terminal contact surface.

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 insertion ends are wrapped with the plastic, so that the stability of the insertion ends of the differential signal pairs is enhanced, meanwhile, the arrangement of the bends on the shielding sheets realizes the comprehensive shielding between the adjacent signal pairs, and the shielding effect between the signal pairs is ensured, meanwhile, the plastic and the bends are fixedly connected, so that the distance and constancy between the terminals of the insertion ends and the shielding sheets are ensured, the change of the distance between the terminals and the shielding sheets caused by the deflection of the terminals and the like is effectively avoided, and the transmission of the shielding effect and the signal performance is ensured.

Drawings

FIG. 1 is a schematic view of the 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 schematic view of the terminal module;

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

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

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

fig. 10 is a schematic view of a terminal module in a further viewing orientation with the shield blades removed;

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

FIG. 12 is a schematic view of a shield sheet;

FIG. 13 is a schematic view of another viewing direction of the shield blades;

FIG. 14 is a schematic view of a further viewing orientation of the shield blades;

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

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

[ description of main element symbols ]

1: shell body

11: upper shell

111: cantilever arm

112: boss

113: clamping groove

114: groove

115: signal positioning hole

116: lock slot

12: lower casing

2: terminal module

21: terminal with a terminal body

211: differential signal pair

213: hot riveting column

214: slotting

22: shielding sheet

221: u-shaped bend

2211: edge folding

222: projection

223: gap

23: insulator

231: u-shaped fixing groove

232: straight section

233: guide arm

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-16, which are schematic structural diagrams of parts of an adapter according to an embodiment of the present invention, the adapter includes a housing 1 and a plurality of terminal modules 2 mounted in the housing 1 in a row, each terminal module 2 includes a terminal 21, an insulator 23, and a shielding plate 22, where the terminal 21 is located in the insulator 23, a node distance of each terminal 21 is kept constant by the insulator 23, and the shielding plate 22 covers one side of the insulator 23 for shielding the terminal 21 on the side.

The terminal 21 includes signal terminals, two adjacent signal terminals form a differential signal pair 211, in the embodiment of the present invention, both ends of the differential signal pair 211 are insertion ends, both ends of the shielding plate 22 are provided with bends for accommodating the insertion ends of the single differential signal pair 211, in the embodiment of the present invention, the bends are U-shaped bends 221, the U-shaped bends 221 include two bent edges 2211 and a bottom edge 2213, the bottom edge 2213 is a portion of the shielding plate 22 corresponding to the differential signal pair 211, and the bent edges 2211 are formed by bending portions of the shielding plate located at both sides of the bottom edge 2213 in the direction of the differential signal pair. Therefore, the U-shaped bending part forms semi-surrounding type shielding for the insertion ends of the differential signal pairs 211, and shielding between the insertion ends of the adjacent differential signal pairs and between the 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 folding edges 2211 cannot be formed at the same time at the positions between the adjacent signal pairs on the shielding sheet 22 due to the limitation of the spacing between the signal pairs, in the embodiment of the present invention, in the arrangement direction of the differential signal pairs 211 in the terminal module 2, the U-shaped bends 221 are distributed at the positions separated by one differential signal pair, so that the insertion ends of the adjacent differential signal pairs 211 are located in the corresponding U-shaped bend 221, and the other does not have the corresponding U-shaped bend 221, but the folding edges 2211 at the two sides of the U-shaped bend 221 can realize the separation between the insertion ends of the adjacent differential signal pairs 211, thereby realizing the shielding between the insertion ends of the adjacent signal pairs. In the embodiment of the present invention, in order to achieve reliable enclosure of the insertion end of the differential signal pair, the folded edge 2211 has a sufficient width, so that a gap 223 is formed between adjacent U-shaped bends 221 by machining the folded edge 2211. Preferably, the tail of the U-shaped bend 221 is further provided with a protrusion 222 extending backward along the insertion end of the differential signal pair.

Due to the U-shaped bend 221 on the shielding sheet 22, the purpose of shielding protection can be realized by only one shielding sheet 22 for a single terminal module, and the shielding effect can be achieved without adding other parts. Preferably, the U-shaped bends 221 at the two ends of a single shielding plate 22 are distributed along the arrangement direction of the differential signal pair 211 in a staggered manner, so that two insertion ends of the same differential signal pair are located in the U-shaped bends 221 on the shielding plate 22, and the shielding plate 22 is not provided with the U-shaped bends 221 adapted to the other insertion ends, that is, the shielding plate 22 of the present invention has a 180-degree rotational symmetric structure, so that the two ends of the shielding plate can be freely exchanged, and the assembly does not need to be distinguished, but is not limited thereto.

The terminal module 2 may be provided with the shielding plate 22 only on one side of the arrangement direction of the vertical differential signal pair 211, or may be provided with the shielding plates 22 on both sides of the arrangement direction of the vertical differential signal pair 211. When the shielding plate 22 exists only on one side of the terminal module, the insertion ends of the differential signal pairs 211 in a single terminal module 2 are staggered and surrounded by the U-shaped bends and the non-U-shaped bends, so that shielding between the insertion ends of adjacent signal pairs is realized, and the problem that due to the fact that the U-shaped bends 221 are continuously arranged on the shielding plate 22 (each differential signal pair has a corresponding U-shaped bend), shielding plate materials between adjacent differential signal modules are insufficient due to the distance limitation between the adjacent differential signal pairs, and two folded edges 2211 cannot be formed at the same time is solved.

In the embodiment of the present invention, the shielding plates 22 are simultaneously disposed on two sides of a single terminal module 2, and the bending directions of the U-shaped bends 221 bent edges 2211 on the two shielding plates 22 are opposite and are both bent toward the direction of the terminal, so that the U-shaped bends located at the same end on the two shielding plates 22 are distributed in a staggered manner in the arrangement direction of the differential signal pairs 211, and the insertion end of each differential signal pair is located in the corresponding U-shaped bend 221, thereby not only enhancing the shielding effect of the single module, but also balancing the stress on the whole terminal module 2, and effectively solving the problem that the terminal module is unbalanced in stress when in use and assembly.

In the embodiment of the present invention, the root of the two bent edges 2211 of the U-shaped bend 221 extend backwards to form a protrusion 222, the shielding plate 22 is further provided with a notch 223 corresponding to the U-shaped bend on the other shielding plate at a position between the adjacent U-shaped bends 221, when the shielding plates on both sides of the terminal module are assembled, the protrusion 222 at the root of the U-shaped bend of one shielding plate enters the notch 223 of the other shielding plate, and the two shielding plates are in contact by the protrusion at the U-shaped bend and the notch 223. Preferably, the protrusion 222 and the sidewall of the notch 223 are contacted by welding, but not limited thereto. According to the invention, the U-shaped bent tail protrusion 222 and the notch 223 of the other shielding sheet are assembled and then welded together in a welding mode, so that the differential pair signal transmission in the U-shaped can be better shielded in the signal transmission process, and the 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 not changed, the present invention can combine the differential signal pairs with the same node distance into a terminal module by the buckling of two shielding plates 22 and U-shaped bends 221 distributed at intervals at the end portions thereof, and at either end of the terminal module, the U-shaped bends 221 with the opposite bending directions of the folded edge 2211 are distributed along the arrangement direction of the differential signal pairs in the terminal module in a staggered manner.

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 the same structure, and the bends at the two ends of each shielding plate are distributed in a staggered manner along the arrangement wind direction of the differential signal pairs, that is, the positions corresponding to the two ends of the unified differential signal pair are located, one end of each shielding plate is bent correspondingly, the other end of each shielding plate is not bent correspondingly, and the shielding plates have a 180-degree rotational symmetry structure, so that the mounting directions of the two ends of each shielding plate do not need to be distinguished during assembly. In the embodiment of the invention, the shielding sheets with completely same structures are adopted at the two sides of the terminal module, so that errors generated during the processing and assembly of the shielding sheets can be reduced, and the processing and assembly are more convenient.

Through the reverse buckling of the two identical shielding pieces 22 at 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 distance between the 2N differential signal pair and the node 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 present invention, the number of the differential signal pairs 211 is 4, the node distance of the 4 differential signal pairs 211 is kept unchanged by the insulator 23, two identical shielding plates 22 are respectively covered on one side of the injection molding insert, two ends of each shielding plate 22 are provided with 2U-shaped bends 221 at an interval of one differential signal pair, and the shielding plates 22 have a 180-degree rotational symmetry structure, so that two insertion ends of the same differential signal pair are respectively located in the U-shaped bends on different shielding plates 22. When the two shielding plates are buckled, the U-shaped bend on one shielding plate is contacted with the notch 223 of the other shielding plate through the bulge 222 at the tail part of the U-shaped bend, 4U-shaped bends are distributed in the distribution direction of the signal pairs, the insertion ends of the 4 signal pairs are respectively accommodated in the corresponding U-shaped bends, and the adjacent signal pairs are positioned in the bends of different shielding plates, so that the integrity of 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 bends may be other structures having a semi-enclosed shield cavity capable of receiving the plug ends of the differential signal pairs.

In the embodiment of the present invention, the insulator 23 is an injection mold insert, and the terminal 21 and the injection mold insert are formed into a one-shot injection mold block by injection molding. Other positions of the insertion end of the terminal 21 except the contact surface (the surface contacted with the adaptive end terminal) are wrapped by plastic injection molding, namely the fixation of the insertion end of the terminal is realized by wrapping the plastic on the part outside the insertion end contact surface of the terminal 21, the fixation of the terminal 21 at the contact end can be enhanced while the insertion end contact surface is effectively avoided, so that the stability of the terminal 21 is enhanced, and the contact of the insertion end is more reliable.

In order to prevent the excessive plastic from overflowing to the contact surface of the insertion end of the terminal 21 during injection molding and affecting the contact of the terminal, at least a part of at least one side surface of the insertion end of the terminal 21, which is connected with the contact surface 215, is not wrapped by the plastic, that is, at least one side surface of the two side surfaces, which is at least adjacent to the contact surface 215, is not wrapped by the plastic, so as to prevent the excessive plastic from overflowing to the contact surface 215. Therefore, at least one long groove is formed in the part, wrapped by the terminal insertion end, of the injection mold insert, the long groove is located on the side face, opposite to the adjacent terminal, of the terminal, the opening direction of the long groove is the same as that of the contact face, the long groove extends along the length direction of the terminal insertion end, the extending length is not less than the length, matched with the insertion end, of the terminal, 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 connected with the contact surface to have a part without plastic wrap, and the part of the side surface connected with the contact surface is exposed in the air. The long groove is a through groove or a blind groove, when the long groove is the through groove, the side face of the long groove is completely exposed in the air, and when the long groove is the blind groove, only the part, far away from the contact face, of the side face of the long groove is exposed in the air.

In order to improve the transmission performance of the terminal 21, in the embodiment of the present invention, the injection mold inserts on two side surfaces of the terminal adjacent to the contact surface 215 are provided with long grooves, and the long grooves enable one sides of the two side surfaces close to the contact surface 215 to be free from plastic package and exposed to air. The two terminals forming one differential signal pair 211 have a plurality of side surfaces adjacent to the contact surface 215, and the two side surfaces connected to the contact surface 215 are defined as a first side surface 216 and a second side surface 217, respectively, where 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 side opposite to the contact surface 215 is defined as a third side 218, and the first side 216, the second side 217 and the third side 218 extend along the insertion direction.

The slot at the first side 216 is a first slot 2311, and the first slot 2311 is a through slot, so that the first side 216 is completely exposed to air without any plastic wrap. The slot at the second side 217 is a second slot 2313, and the second slot 2313 is a blind slot open to the side of the contact surface 215, so that only the portion of the second side 217 that is connected to the contact surface 215 is exposed to the air, and the portion that is away from the contact surface 215 is wrapped with plastic. In the embodiment of the present invention, the first long grooves 2311 at the first side surfaces of the two terminals constituting the same differential signal pair are communicated, so that a through groove is formed between the two terminals, and the through groove exposes the first side surfaces of the two terminals to the air. In the embodiment of the present invention, the extension length of the first long groove 2311 along the inserting direction is smaller than the extension length of the second long groove 2313 along the inserting direction.

A long groove is also formed at the third side 218 of the terminal, and is a blind groove which partially exposes the third side 218 of the terminal to the air, and the long groove can realize the adjustment of impedance. 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 inserting direction and fourth elongated slots 2315 spaced apart along the terminal inserting direction. The third long groove 2314 enables one side of the third side surface of the terminal close to the other terminal to be free of plastic package and exposed in air. Preferably, the third slot 2314 has the same extension length as the first slot 2311, and the third slot 2314 is communicated with the first slot 2311 to form a stepped slot extending in the thickness direction of the terminal.

The fourth long grooves 2315 are blind grooves communicated with the third long grooves 2314, preferably, two fourth long grooves 2315 are arranged on the third side face of each terminal, the fourth long grooves 2315 further increase the area of the third side face 218 exposed in the air without plastic package, impedance can be adjusted, space can be provided for auxiliary tools for supporting the terminals during terminal injection molding, the terminals are guaranteed to be relatively stable in position during injection molding, bending is not prone to occurring, and injection molding quality of the terminals is improved.

In the embodiment of the present invention, a surface of the second long groove 2311, which is connected to the second side surface, is an inclined surface 23111.

The arrangement of the long groove can effectively prevent the redundant plastic generated in the injection molding process of the insertion end of the terminal from overflowing to the contact surface of the terminal, increase the contact area of the terminal and air, adjust the impedance of the terminal, facilitate the contact of the insertion end and the terminal and facilitate the transmission of performance.

In the embodiment of the present invention, in order to ensure the stability of the insertion ends of the differential signal pairs, the front end of the injection mold insert of the present invention is formed with a terminal fixing portion for wrapping the insertion ends of the differential signal pairs, preferably, the terminal fixing portion is a U-shaped fixing groove 231, the insertion ends of each differential signal pair are wrapped in the U-shaped fixing groove 231 by injection molding, the first long grooves 2311 at the first side surfaces 216 of the two signal terminals are mutually communicated, so that the bottom of the U-shaped fixing groove 231 is provided with a through hole, and the third long groove 2314 and the fourth long groove 2315 at the third side surfaces of the two signal terminals are both located on the surface of the bottom of the U-shaped fixing groove 231 opposite to the ends.

After the terminals and the injection mold insert are injection molded, the third slot 2314 makes the third sides 218 of the two terminals 21 forming a signal pair have no plastic wrap on the side close to the other terminal, are exposed to air, and have plastic wrap on the side far from the other terminal. The first side surface 216 of the single terminal is not wrapped by plastic due to the arrangement of the first long groove 2311, the second side surface 217 is wrapped by plastic only at one side far away from the contact surface 215 due to the existence of the second long groove 2313, namely, the part (the part which is not connected with the contact surface) of the second side surface 217 close to the bottom of the U-shaped fixed groove 231 is wrapped by plastic, and the part (the part which is connected with the contact surface) far away from the bottom of the fixed groove is not wrapped by plastic, namely, the terminal is spaced from the wall of the U-shaped fixed 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 matching of the concave-convex structure, so as to prevent the two from moving or deflecting relatively under a vibration environment or an insertion force, thereby ensuring the distance between the differential signal pair and the shielding to be constant, and ensuring the transmission of signal performance. In other embodiments of the present invention, the shield piece bending and the terminal fixing portion also have an adaptive structure, that is, after the shield piece is assembled in place, the terminal fixing portion is accommodated in the shield piece bending, and the terminal fixing portion is limited by the concave-convex structure. That is, neither the bent shield piece nor the terminal fixing portion is limited to the U-shaped structure of the present invention.

In the embodiment of the present invention, the U-shaped fixing groove 231 and the U-shaped bend 221 are positioned by a snap structure on two side walls. Specifically, the outer surfaces of the two side walls of the U-shaped fixing groove 231 are protruded with clamping platforms 2312, the two side walls of the U-shaped bend 221 are provided with corresponding bayonets 2212, and the shielding plates at the insertion end are firmly and reliably buckled on the plastic through the matching of the clamping platforms and the bayonets, so that the distance between the differential signal pairs and the shielding plates is constant.

In other embodiments of the present invention, only the fixing requirement of the differential signal pair at the insertion end needs to be satisfied, and the terminal fixing portion formed by the injection molding insert at the insertion end is not limited to the structure of the U-shaped fixing groove 231. No matter how the whole structure of the terminal fixing part changes, the position relation among the first long groove, the second long groove, the third long groove and the fourth long groove and the terminal inserting end is unchanged. The injection molding insert is provided with a plurality of hot riveting columns 213 on the surface, 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 during assembly.

In the embodiment of the present invention, the thermal rivets 213 are distributed on at least one side of the differential signal pair trace portion, and are uniformly spaced at intervals on one side of the differential signal pair trace portion. In order to ensure the attaching degree and the fixing reliability between the U-shaped fixing groove 231 and the U-shaped bending 221 of the shielding plate, the U-shaped fixing groove 231 and the U-shaped bending 221 are further fixed by hot riveting through a hot riveting column 213. Preferably, the injection mold 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 between the U-shaped fixing groove 231 and the U-shaped bend 221, and the hot riveting column 213 is arranged to enable the shield and the injection mold insert to be attached more tightly at the insertion end. According to the invention, the terminal fixing part (U-shaped fixing groove) and the shielding sheet are bent at the 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) for hot riveting and fixing, so that the fixing and the attaching between the terminal fixing part and the injection molding insert main body can be ensured, the terminal inserting area can be avoided, and the terminal performance is prevented from being influenced.

According to the invention, the shielding sheet and the plastic are bonded without a gap through the hot riveting point of the insertion end and the buckle at the U-shaped bending part, and the distance between the terminal and the shielding sheet is ensured to be constant, so that the transmission of signal performance is facilitated.

In the embodiment of the invention, the head part of the insertion end of the terminal 21 is wrapped by plastic, and the insertion end of the terminal guides the opposite insertion end to enter the insertion surface of the terminal through the plastic wrapping the head part of the terminal, so that opposite insertion is realized. Specifically, the plastic wrapping the insertion end of the terminal is a horizontally extending straight section 232 located at the front end of the insertion end, so that the insertion end can be correctly inserted, and the partial insertion or the misplugging is prevented. The end face of the front end of the straight section 232 is an oblique chamfer 2321 with a guiding function, and the two sides of the front end of the straight section 232 and the upper and lower end faces are provided with oblique chamfers 2321 for guiding so as to facilitate better guiding of the opposite insertion end.

The rear end edge position of the straight section 232 is respectively extended with a guiding arm 233 along the length direction for preventing the skew of the inserting end in the inserting and closing process, one side of the guiding arm close to the terminal is provided with a guiding inclined plane 2331 gradually close to the terminal from front to back, and the arrangement of the guiding inclined plane 2331 can guide the moving of the inserting end terminal to the terminal inserting and closing surface, so as to ensure the effective contact of the terminal.

In the embodiment of the present invention, the guiding arm 233 is an L-shaped plastic wall, the horizontal section at the front end thereof is connected to the end of the straight section 232, the vertical section at the rear end thereof is blocked outside the terminal, the inner side of the vertical section is provided with a guiding inclined plane 2331, and a groove is further formed between the inner side of the vertical section and the upper portion of the side wall of the terminal to prevent the plastic of the vertical section from overflowing to the contact surface on the upper surface of the terminal to affect the contact effect.

In the embodiment of the present invention, the housing 1 is formed by fastening 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 butted, and the convex-concave matching locking is realized by the boss 112 outside the cantilever 111 protruding from the front end of one end and the clamping groove 113 distributed on the periphery of the other end. Preferably, the upper housing 11 and the lower housing 12 have the same structure, and the cantilever 111 and the slot 113 are distributed on the upper housing. The peripheries of the upper shell 11 and the lower shell 12 are provided with locking grooves 116 for matching and locking with the matched connector, but the invention is not limited to this.

In the embodiment of the present invention, the upper housing 11 and the lower housing 12 are both of a structure with an open front end and a closed rear end, and the end surfaces of the rear portions of the upper housing 11 and the lower housing 12 are both provided with signal positioning holes 115 for the insertion ends of the differential signal pairs to penetrate through, 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 that 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 where the shielding plate 22 is thermally riveted with the plastic at the U-shaped bend 221 is formed at a position corresponding to the signal positioning hole 115.

In the embodiment of the present invention, the end surfaces of the tail portions of the upper housing 11 and the lower housing 12 are further provided with grooves 114 at intervals, which are matched with the adapting end housing to realize insertion direction identification and deflection limit.

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 completely the same as that of the adapter. The differential signal pair at the crimping end of the connector can also be accommodated in the U-shaped bend of the shielding sheet, and at the moment, the crimping part of the differential signal pair at the crimping end extends out of the U-shaped bend.

In the embodiment of the invention, the terminals are all signal terminals. 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 (10)

1. The utility model provides a shielding part fixed knot constructs, its includes the terminal, moulds plastics mold insert and shielding piece, its characterized in that: the shielding plate is provided with a bending part used for accommodating the insertion ends of the differential signal pairs and realizing shielding between the adjacent differential signal pairs, the injection molding insert wraps the plastic of the insertion ends of the differential signal pairs to form a terminal fixing part, and the terminal fixing part is positioned in the bending part of the adaptation through a buckle structure so as to prevent relative displacement between the terminal and the shielding plate.

2. The shield fixing structure according to claim 1, wherein the bent portion and the terminal fixing portion are further fixed by hot riveting with a hot riveting column.

3. The shield fixing structure according to claim 2, wherein: the bent part and the terminal fixing part are fixed by hot riveting at a position close to the tail part.

4. The shield fixing structure according to claim 3, wherein: the terminal fixing part is a fixing groove, and the fixing groove is positioned through the matching of clamping platforms on the outer sides of wall bodies on two sides of the fixing groove and bent upper bayonets.

5. The shield fixing structure according to claim 4, wherein: defining the surface of the two terminal insertion ends forming a differential signal pair, which is opposite to the other terminal, as a first side surface, the surface opposite to the other terminal is a second side surface, and the surface opposite to the contact surface is a third side surface, so that a first long groove for exposing the first side surfaces of the two terminals in the air is formed at the bottom of the fixed slot; and second long grooves which enable second side surfaces of the two terminals to be exposed in the air are further formed in the inner sides of the wall bodies on the two sides of the fixing groove.

6. The shield fixing structure according to claim 5, wherein: and the surface of the bottom of the fixed slot, which is opposite to the terminals, is also provided with a long slot which enables the third side surfaces of the two terminals to be partially exposed in the air.

7. The shield plate fixing structure according to any one of claims 1 to 6, wherein: the terminal module is characterized in that shielding sheets are arranged on two sides of the terminal module, and bends on the two shielding sheets are distributed in a staggered mode in the arrangement direction of the differential signal pairs, so that the insertion ends of adjacent differential signal pairs are respectively located in the bends of different shielding sheets.

8. The shield fixing structure according to claim 7, wherein: the bend in one shield plate contacts the other shield plate.

9. The shield fixing structure according to claim 7, wherein: the differential signal pair plug terminal head part is also wrapped with plastic used for guiding the plug terminal to enter the terminal contact surface.

10. A connector, characterized by: the shielding part fixing structure comprises a shell and a plurality of terminal modules assembled in the shell, wherein each terminal module comprises the shielding part fixing structure as claimed in any one of claims 2 to 9, a signal positioning hole for realizing bending positioning is formed in the insertion end of the shell, and an avoiding groove for avoiding a hot riveting fixing position on a bend is formed in one side of the signal positioning hole.

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