CN217158703U

CN217158703U - High-speed electric connector for signal transmission

Info

Publication number: CN217158703U
Application number: CN202220562658.1U
Authority: CN
Inventors: 印小虎; 龚亮; 丁林通; 姜普泽田
Original assignee: Jiangsu Xinchuanglian Precision Electronics Co ltd
Current assignee: Jiangsu Xinchuanglian Precision Electronics Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-08-09
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to an electric connector field provides the high-speed electric connector of signal transmission. The plastic terminal comprises a plastic body, an iron shell arranged outside the plastic body, and two rows of terminals arranged in the plastic body correspondingly. The terminals of each row are fixed by fixing plastic respectively, and the fixing plastic is arranged on the plastic body. The terminals are integrally formed in a punching mode, so that the integral flatness is ensured, the fixing plastic is formed on the outer sides of the whole row of terminals in an insertion forming mode, the terminals and the fixing plastic form a whole, the flatness of the terminals is guaranteed, meanwhile, the subsequent integral installation is facilitated, and the fixing plastic is matched with the plastic body in an installation mode, so that the deformation of the terminals in the installation process is avoided.

Description

High-speed electric connector for signal transmission

Technical Field

The utility model relates to an electric connector field, concretely relates to high-speed electric connector of signal transmission.

Background

The MICO electric connector is called Mini Cool I/O electric connector, is used for high-speed transmission of high-frequency signals in electronic equipment, and is suitable for a new generation of small-sized systems. The signal transmission member is inserted into the housing from the insertion opening of the plastic body of the electrical connector, and the plurality of contact terminals of the signal transmission member are brought into contact with the plurality of conductive contacts of the electrical connector, and by properly inserting the signal transmission member into the electrical connector, electrical conduction between the signal transmission member and the wiring board is ensured.

A MICO electrical connector generally comprises several parts, a plastic body, an iron shell, two rows of terminals, and a plastic holder for holding the terminals. The iron shell is installed on the outer side of the plastic body and generally plays roles of signal shielding, grounding, auxiliary fixing of an electric connector and the like. The fixing method of the iron shell and the plastic body is also one of the factors affecting the performance of the electrical connector. The terminals are welded on the wiring board in a plate welding mode. In order to ensure the stability when transmitting high-speed signals, the coplanarity of the contact points of the two rows of terminals constructed in signal transmission and the coplanarity of the welding feet of the welding ends of the terminals are required to be higher so as to avoid unstable contact of the contact points of the terminals and insufficient welding of the welding feet of the terminals. The coplane end of whole row of terminal is guaranteed to traditional electric connector's terminal adoption mode of whole punching press, then inserts the plastic body with whole row of terminal in, then does the processing of bending with the welding foot, and at the terminal in-process of inserting the assembly, its coplane degree can change, influences the performance of contact. The problem that the welding foot is rebounded or not bent in place after being bent can occur, and the effect of welding connection is affected.

Disclosure of Invention

In order to overcome the defects that the terminal coplanarity and the welding coplanarity of the high-speed signal transmission electric connector in the prior art are difficult to control and the connection structure between each part is unstable, the stability and the reliability of the electric connector are improved, the utility model aims to provide a high-speed signal transmission electric connector.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the signal transmission high-speed electric connector comprises a plastic body, an iron shell arranged outside the plastic body, and two rows of terminals arranged in the plastic body correspondingly, wherein the welding ends of the terminals extend out of the outer side of the plastic body; each row of the terminals is fixed by fixing plastic, and the fixing plastic is arranged on the plastic body; the two ends of the fixed plastic in the length direction are respectively provided with a lug, the inner wall of the plastic body is provided with a groove correspondingly matched with the lug, and the fixed plastic is inserted into the groove of the plastic body through the lug; two fixed plastic corresponding to the two rows of terminals are closely matched, a binding surface of one fixed plastic is provided with a pin, and a binding surface of the other fixed plastic is provided with a pin hole matched with the pin.

The terminal comprises a terminal body, a terminal fixing plastic and a pressing strip, wherein the welding end of the terminal body is a horizontal right-angle bending foot, the middle of the terminal body is fixed with the corresponding fixing plastic, the bottom of the fixing plastic is provided with the pressing strip, and the right-angle bending foot of the terminal body is attached to the outer right-angle surface of the pressing strip.

The fixing plastic and the corresponding pressing strip are integrated parts which are formed on the outer side of the terminal in an injection molding mode.

The iron shell comprises a top surface and three side surfaces matched with the two side surfaces of the plastic body in the length direction, the plastic body is provided with a mounting groove corresponding to the thickness of the iron shell on the matching surface of the iron shell, the iron shell is embedded in the mounting groove, the three surfaces of the iron shell are respectively provided with a limiting hole, and the plastic body is provided with a convex rib matched with the limiting hole.

The iron shell and the side surfaces of two sides of the plastic body in the length direction are respectively provided with a plurality of bending feet, and the plurality of bending feet are hooked and matched with the edges of the top surface and the bottom surface of the plastic body after being bent.

Wherein, the protruding muscle is equipped with the direction slope towards one side of iron-clad installation direction of inserting.

After taking above technical scheme, the beneficial effects of the utility model are that:

1. the terminals are integrally formed by punching, so that the integral flatness is ensured, the fixing plastic is formed on the outer sides of the whole row of terminals by means of insert molding, the terminals and the fixing plastic form a whole, the flatness of the terminals is ensured, the subsequent integral installation is facilitated, and the fixing plastic is matched with the plastic body in an installation mode, so that the deformation of the terminals in the installation process is avoided.

2. The welding of the terminal is the flitch welding of right angle bending, and the interior right angle department shaping of foot of bending goes out the layering integrative with the immobilization plastic when shaping immobilization plastic, utilizes the layering to carry out plastic and spacing to the welding of bending, has guaranteed the plane degree of welding foot and has avoided the deformation of welding foot simultaneously.

3. The fixing pieces of the two rows of terminals are inserted into the plastic body in an interference fit mode, so that accurate limiting can be realized, and the connection stability can be ensured; the two fixed plastic parts form a stable whole by the matching of the pin and the hole, thereby avoiding the dislocation between the two rows of terminals and improving the installation precision of the electric connector.

4. The iron shell is spacing through the mounting groove to through spacing hole and protruding muscle cooperation location installation, it is further spacing with the plastic body again with the foot of bending, the combination of three kinds of spacing connected modes, the iron shell installation of being more firm stable, can bear impact and vibration.

Drawings

Fig. 1 is a schematic perspective view of the present embodiment.

Fig. 2 is a sectional view of the present embodiment.

Fig. 3 is a perspective view of the upper and lower row terminal assemblies.

Fig. 4 is a cross-sectional view of the upper and lower row terminal assemblies.

FIG. 5 is a schematic diagram of a top row of I/O terminal assemblies.

FIG. 6 is a schematic diagram of the structure of the lower row of I/O terminal assemblies.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in FIG. 1, the signal transmission high-speed electrical connector comprises a plastic body 1, an upper row of I/O terminal assemblies 2, a lower row of I/O terminal assemblies 3 and an iron shell 4.

The plastic body 1 is an insulating plastic body, and supporting legs 11 are arranged at four corners of the bottom of the plastic body and used for positioning the wiring board. One end of the plastic body 1 in the width direction is an insertion opening 12 of the signal transmission component, and the upper row of I/O terminal assemblies 2 and the lower row of I/O terminal assemblies 3 are arranged in the plastic body 1 and distributed up and down. The terminal end welding pins of the upper row of I/O terminal assembly 2 and the lower row of I/O terminal assembly 2 are flitch type welding pins 211, and the welding pins 21 are bent to be horizontal at right angles and are positioned on one side, far away from the insertion opening 12, below the plastic body 1.

The upper row I/O terminal assembly 2 and the lower row I/O terminal assembly 3 are respectively composed of a plurality of terminals 21 and holding plastic 22, the terminals 21 include a plurality of signal terminals and a plurality of ground terminals, and a plurality of power terminals and other terminals can be replaced and needed. The ends, 21 of the same row are stamped and formed simultaneously to ensure coplanarity. In order to ensure the coplanarity of the terminals 21 during the installation process, the terminals 21 and the corresponding holding plastic 22 are formed by insert molding, that is, the entire row of terminals 21 is placed into a mold, and the holding plastic 22 is molded on the outer side of the terminals 21 to form an upper row of I/O terminal assemblies and a lower row of I/O terminal assemblies, respectively.

The mounting structure of the upper row of I/O terminal assemblies and the lower row of I/O terminal assemblies is as follows: the two inner side surfaces in the length direction of the interior of the plastic body 1 are processed with grooves 13, the two end surfaces in the length direction of each fixed plastic 22 are processed with lugs 221 corresponding to the grooves, the inlet of each groove 13 is a tapered guide port, so that the lugs 221 can be conveniently inserted, and the lugs 221 and the grooves 12 are in interference fit to fix each terminal assembly in the plastic body 1. Meanwhile, grating cavities 14 for containing terminals are processed on the upper side surface and the lower side surface in the plastic body 1, each grating cavity corresponds to one terminal, an inclined hole 15 for limiting the head of the terminal is arranged at one end, close to the insertion hole, of each grating cavity 14, and the head 212 of each terminal 21 is attached to a slope surface 151 of each inclined hole 15 and extrudes the slope surface. The contact segments 213 of the terminals 21 and the signal transmission member are located outside of the grid cavities 14, and the spacing between the contact segments 213 of the corresponding terminals of the upper and lower rows of I/O terminal assemblies is less than the thickness of the signal transmission member and presses the signal transmission member from both sides of the signal transmission member.

In order to accurately position the upper row of I/O terminal assemblies and the lower row of I/O terminal assemblies and prevent the two rows of terminals from being staggered, the upper and lower holding plastics 22 are connected by pin holes, three vertical pins 222 are formed on the top surface of the lower holding plastics, and three corresponding pin holes 223 are formed on the bottom surface of the upper holding plastics. After the upper row of I/O terminal assemblies 2 and the lower row of I/O terminal assemblies 3 are molded, the upper row of I/O terminal assemblies 2 and the lower row of I/O terminal assemblies 3 are integrated by the cooperation of pins and holes and then inserted into the plastic body 1.

A pressing strip 223 is integrally formed at the bottom of each fixing plastic 22 close to the welding foot, the outer right-angle surface of the pressing strip 223 is matched with the inner right-angle bending part of the welding foot 211, and the pressing strip 223 ensures that the terminal welding feet 211 in the whole row are coplanar and prevents the deformation and resilience of the welding feet 211.

The iron shell 4 is an important component of the electrical connector. The iron shell 4 is composed of a top surface and two side surfaces, and is respectively matched with the top surface and the two side surfaces of the plastic body 1. In order to position the iron shell 4, a mounting groove 16 corresponding to the shape of the iron shell is formed on the outer side of the plastic body 1, and the iron box 4 is mounted in the mounting groove 16 along with the plastic body 1. The bottom ends of the two side surfaces of the iron shell 4 are respectively provided with a mounting foot 41. In order to fix the iron shell 4 and the plastic body 1, limiting holes 42 are respectively processed on three surfaces of the iron shell 4, convex ribs 17 are formed at the corresponding positions on the plastic body 1, one side surface of each convex rib 17 facing the installation direction of the iron shell is a slope surface, and after the iron shell 4 is installed, the convex ribs 17 are located in the limiting holes 42 to limit the iron shell 4. For further reinforcement, bending feet 43 are respectively stamped at the upper and lower edges of the two side surfaces of the iron shell 4, and the edges of the upper and lower bottom surfaces of the plastic body 1 are hooked after the bending feet 43 are bent, so that the iron shell 4 is fixed.

Claims

1. The signal transmission high-speed electric connector comprises a plastic body, an iron shell arranged outside the plastic body, and two rows of terminals arranged in the plastic body correspondingly, wherein the welding ends of the terminals extend out of the outer side of the plastic body; each row of the terminals is fixed by fixing plastic, and the fixing plastic is arranged on the plastic body; the plastic fixing device is characterized in that two ends of the fixing plastic in the length direction are respectively provided with a lug, the inner wall of the plastic body is provided with a groove correspondingly matched with the lug, and the fixing plastic is inserted into the groove of the plastic body through the lug; two fixed plastic corresponding to the two rows of terminals are closely matched, a binding surface of one fixed plastic is provided with a pin, and a binding surface of the other fixed plastic is provided with a pin hole matched with the pin.

2. The signal transmission high-speed electrical connector according to claim 1, wherein the terminal has a welding end formed by a horizontal right-angle bending leg, the middle portion of the terminal is fixed to a corresponding fixing plastic, a pressing strip is disposed at the bottom of the fixing plastic, and the right-angle bending leg of the terminal is tightly attached to the outer right-angle surface of the pressing strip.

3. The signal transmission high speed electrical connector of claim 2, wherein the retaining plastic and corresponding bead are one piece injection molded on the outside of the terminal.

4. The signal transmission high-speed electrical connector according to claim 1, wherein the iron case includes three surfaces that engage with the top surface of the plastic body and two side surfaces of the plastic body in the length direction, a mounting groove corresponding to the thickness of the iron case is formed on the engaging surface of the plastic body and the iron case, the iron case is embedded in the mounting groove, the three surfaces of the iron case are respectively provided with a limiting hole, and the plastic body is provided with a protruding rib that engages with the limiting hole.

5. The signal transmission high-speed electrical connector according to claim 4, wherein a plurality of bending legs are respectively disposed on the surfaces of the iron shell engaged with the two side surfaces of the plastic body in the length direction, and the plurality of bending legs are hooked and engaged with the edges of the top surface and the bottom surface of the plastic body after being bent.

6. The signal transmission high-speed electrical connector according to claim 4, wherein a side of the rib facing the mounting insertion direction of the iron case is provided with a guide slope.