CN201741935U - Electric connector and terminal module of same - Google Patents

Abstract

An electrical connector and its terminal module, the terminal module is installed on the insulating body to form the electrical connector. The terminal module includes several conductive terminals and insulating blocks covering the periphery of these conductive terminals. The conductive terminals include a middle part embedded in the insulating block, a contact part extending from one end of the middle part and protruding from the front end of the insulating block, and a The other end of the middle part extends and protrudes from the mounting feet at the bottom of the insulating block, the contact part is exposed to the air, the width of the middle part is smaller than the thickness of the middle part, and the width of the middle part is smaller than the width of the contact part. With such arrangement, the impedance of the conductive terminals exposed to the air can be reduced, and the impedance of the middle part can be increased at the same time. Under different peripheral environments, the impedance of the contact part can be guaranteed to be the same as that of the middle part.

Description

Electrical connectors and terminal modules

【Technical field】

The utility model relates to an electric connector and a terminal module used in the communication field. the

【Background technique】

Electrical connectors, especially backplane connectors for high-speed transmission, have very strict requirements on the impedance of the electrical connectors. Usually the system manufacturer will set a system impedance, and the impedance of the electrical connector provided by the electrical connector supplier needs to match the system impedance. A common backplane connector in the industry includes a plurality of terminal modules, and each terminal module includes a plurality of conductive terminals and insulating blocks covering the conductive terminals. The conductive terminal itself has a certain impedance, but at the same time, the external environment will also affect the impedance of the conductive terminal. Specifically, the impedance of the air is relatively large, while the impedance of the insulating material is smaller than that of the air, which requires that the impedance of the conductive terminal itself exposed to the air is relatively small, while the impedance of the conductive terminal covered in the insulating material is relatively small. To be relatively large. With such a setting, when the current is transmitted in the conductive terminal, the impedances of any two positions are the same and consistent with the system impedance. However, how to ensure the same impedance at different positions of the conductive terminals is a common technical problem in the industry. the

Therefore, it is necessary to design a terminal module of an electrical connector to solve the above technical problems. the

【Content of utility model】

The technical problem to be solved by the utility model is to provide a terminal module of the electrical connector so that the impedance of the conductive terminals can be kept matched. the

In order to solve the above technical problems, the utility model adopts the following technical solutions: an electrical connector, including an insulating body and at least one terminal module installed on the insulating body, the terminal module includes an insulating block and is fixed on the insulating block A plurality of conductive terminals, the conductive terminals are located in a common first plane, the conductive terminals include a first part embedded in the insulating block and a second part exposed to the air, the first part includes oppositely disposed and Two first surfaces parallel to the first plane and two second surfaces opposite to each other and perpendicular to the first plane; the second part includes two third surfaces opposite to each other and two second surfaces perpendicular to the third surface Two fourth surfaces; the distance between the two second surfaces is less than the distance between the two first surfaces, and the distance between the two second surfaces is less than the distance between the two third surfaces Or less than the distance between the two fourth surfaces. the

In order to solve the above technical problems, the utility model can also adopt the following technical solutions: a terminal module for installation in an electrical connector, the terminal module includes an insulating block and a number of conductive terminals fixed on the insulating block, The conductive terminals are located in a common first plane, and the conductive terminals include a first part embedded in the insulating block and a second part exposed to the air, and the first part includes oppositely arranged and parallel to the first plane. Two first surfaces and two second surfaces opposite to each other and perpendicular to the first plane; the second part includes two third surfaces opposite to each other and two fourth surfaces opposite to each other and perpendicular to the third surface ; the distance between the two second surfaces is less than the distance between the two first surfaces, and the distance between the two second surfaces is less than the distance between the two third surfaces or less than the distance between the two first surfaces The distance between the four surfaces. the

Compared with the prior art, the utility model sets the width of the first part embedded in the insulating block to be smaller than the thickness of the first part, and at the same time sets the width of the first part to be smaller than the width of the second part or the thickness of the second part The thickness can reduce the impedance of the second part exposed to the air, and at the same time increase the impedance of the first part embedded in the insulating block. Such setting can ensure that the impedance of the first part is consistent with the surrounding environment of the first and second parts. The impedance of the second part is the same, thereby achieving impedance matching. the

【Description of drawings】

Fig. 1 is a three-dimensional assembled view of the electrical connector of the present invention. the

FIG. 2 is a perspective assembled view of another angle of the electrical connector shown in FIG. 1 . the

Fig. 3 is a partially exploded view of the electrical connector of the present invention. the

Fig. 4 is a perspective view of the terminal module of the present invention. the

FIG. 5 is a perspective view from another angle of the terminal module shown in FIG. 4 . the

FIG. 6 is an exploded view of the terminal module shown in FIG. 4 . the

Fig. 7 is a perspective view of the conductive terminals in the electric connector and the terminal module of the utility model. the

FIG. 8 is a schematic diagram when the conductive terminal shown in FIG. 7 is connected to the strip. the

【Detailed ways】

1 to 3 disclose the electrical connector 100 and the terminal module 2 of the present invention. The electrical connector 100 includes an insulating body 1 and a plurality of terminal modules 2 mounted on the insulating body 1 . The insulating body 1 includes a vertical mounting portion 11, first and second protrusions 12, 13 extending from the mounting portion 11, and a positioning portion 14 extending from the upper end of the mounting portion 11 to the other side. In this embodiment, the first and second protruding parts 12 and 13 extend from the upper and lower ends of the installation part 11 and extend toward one side. A receiving space 110 exposed to the air is formed between the first and second protruding parts 12 and 13 . The mounting portion 11 is provided with a plurality of through holes 111 (see FIG. 3 ) penetrating through and communicating with the receiving space 110 . The positioning portion 14 is provided with positioning slots 141 arranged side by side. the

Referring to FIGS. 4 to 6 , the terminal module 2 includes a plurality of conductive terminals 21 , an insulating block 22 covering the conductive terminals 21 , and a shielding shell 23 buckled on the insulating block 22 . Please refer to FIG. 7 to FIG. 8 , the conductive terminal 21 is formed by stamping and twisting the metal strip 3 . The metal strip 3 is flat and includes opposite smooth surfaces 31 before stamping. During the stamping process, the blanking surface 32 remains after the vertical smooth surface 31 stamps the metal strip 3 into a predetermined shape. Without special treatment, the smooth surface 31 is much smoother than the blank surface 32 , so the smooth surface 31 is more suitable for serving as a contact surface for mating with the conductive terminals of the mating connector. the

The conductive terminal 21 includes a meandering middle portion 211 , a contact portion 212 protruding forward from a front end of the middle portion 211 , and a mounting leg 213 extending downward from a bottom end of the middle portion 211 . The contact portion 212 extends into the receiving space 110 through the through hole 111 of the mounting portion 11 . The middle portion 211 includes two first surfaces (in this embodiment, first smooth surfaces) 24 oppositely arranged and two second surfaces (in this embodiment For the first blanking surface) 25. The two first smooth surfaces 24 are respectively consistent with the smooth surfaces 31 of the metal strip 3 . The width and thickness of any two sections of the middle part 211 during the meandering process are the same, so as to ensure that the middle part 211 itself has the same impedance. The contact portion 212 includes two third surfaces (in this embodiment, the second smooth surface) 26 opposite to each other and two fourth surfaces (in this embodiment, the second smooth surface 26 ) opposite to each other and perpendicular to the second smooth surface 26. The second cutting surface) 27. The contact portion 212 is straight and twisted at 90 degrees relative to the middle portion 211 . The purpose of twisting is to transform the smooth surface 31 of the metal strip 3 into a contact surface (ie, the second smooth surface 26 ) for mating with a butt-connected conductive terminal (not shown). The smooth contact surface can reduce the insertion force while ensuring the stability of mating. the

The contact portion 212 is exposed to the air, while the middle portion 211 is embedded in the insulating block 22. Since the impedance of the air is large and the impedance of the insulating block 22 is small, in order to ensure that the conductive terminal 21 remains To maintain the same impedance, the present invention sets the width W1 of the middle part 211 to be smaller than the thickness T1 of the middle part 211 , and makes the width W1 of the middle part 211 smaller than the width W2 of the contact part 212 . Such setting is equivalent to setting the width W1 of the middle part 211 to be narrower than the thickness of the metal strip 3, so as to increase the impedance of the middle part 211 itself. In addition, since the width W2 of the contact portion 212 is relatively large, the impedance of the contact portion 212 itself is smaller than the impedance of the middle portion 211 . The distance T1 between the two first smooth surfaces 24 is smaller than the distance W2 between the two second smooth surfaces 26 . This design can make the conductive terminal 21 embedded in the insulating block 22 , each section maintains the same impedance and matches the impedance of the system. Of course, as a further improvement of the present invention, the thickness T1 of the middle part 211 can also be set to be smaller than the thickness T2 of the contact part 212, the purpose is the same as the above design. The rear end of the contact part 212 and the position close to the middle part 211 are provided with a thickened fixing part 28, and the thickness of the fixing part 28 is greater than the distance T1 between the two first smooth surfaces 24 and the distance T1 between the two first smooth surfaces. The distance W1 between the blanking surfaces 25 . The fixing part 28 is fixed in the through hole 111 of the insulating body 1, so that the conductive terminal 21 can be stably held on the insulating body 1; in addition, the thickened fixing part 28 can also make the contact part 212 relatively Section 211 does the twist. the

In an embodiment of the present invention, the middle part 211 embedded in the insulating block 22 is regarded as a first part, and the contact part 212 exposed outside the insulating block 22 is regarded as a second part. The middle portions 211 of the conductive terminals 21 are commonly located in a first plane (not labeled). As far as the detailed structure is concerned, the first smooth surface 24 is parallel to the first plane, while the first blanking surface 25 is perpendicular to the first plane. Of course, in other embodiments of the present invention, the second part may be other middle part 211 not embedded in the insulating block 22 . the

The insulating block 22 includes a side surface 221 , a cantilever 223 extending from the top surface 222 and a plurality of slots 225 recessed from the bottom surface 224 . The free end of the cantilever 223 is provided with a protrusion 2231 snapped into the positioning groove 141 of the insulating housing 1 . the

The shielding shell 23 includes a main body portion 231 buckled on the side surface 221 of the insulating block 22 and an L-shaped shielding portion 232 extending from the main body portion 231 . Please refer to FIG. 1 and FIG. 4 , the L-shaped shielding portion 232 extends beyond the insulating block 22 and extends into the receiving space 110 . The side surface 221 of the insulating block 22 is provided with a protruding post 226 , and the main body 231 of the shielding shell 23 is provided with a positioning hole 233 matching with the protruding post 226 . In addition, the bottom of the main body portion 231 of the shielding shell 23 is further provided with a bent portion 234 locked in the slot 225 . Such an arrangement facilitates stably buckling the shielding case 23 on the insulating block 22 . the

Among the conductive terminals 21 , two contact portions 212 close to each other form a pair of differential signal terminals. The L-shaped shielding portion 232 is located just outside the contact portion 212 of the pair of differential signal terminals, so as to reduce crosstalk between the pair of differential signal terminals and other adjacent differential signal terminals. the

In summary, the above are only preferred embodiments of the present utility model, and should not limit the scope of the present utility model, that is, all simple equivalents made according to the claims of the utility model and the content of the utility model description Changes and modifications should still fall within the scope covered by the utility model patent. the

Claims (10)

1. electric connector, comprise insulating body and be installed at least one terminal module on the insulating body, described terminal module comprises collets and is fixed in plurality of conductive terminals on the collets, described conducting terminal is positioned at the first common plane, described conducting terminal comprises by edge and is embedded in the first in the collets and is exposed to airborne second portion, it is characterized in that: described first comprises and being oppositely arranged and with first parallel plane two first surfaces and be oppositely arranged and two second surfaces vertical with first plane; Described second portion comprise be oppositely arranged two the 3rd surfaces and be oppositely arranged and with two the 4th surfaces of the 3rd Surface Vertical; Distance between described two second surfaces is less than the distance between two first surfaces, and the distance between described two second surfaces is less than the distance between two the 3rd surfaces or less than the distance between two the 4th surfaces.

2. electric connector as claimed in claim 1 is characterized in that: described first surface is that first shiny surface, second surface are that first time charge level, the 3rd surface are that second shiny surface, the 4th surface are second time charge level.

3. electric connector as claimed in claim 2 is characterized in that: the distance between described two first shiny surfaces is less than the distance between two second shiny surfaces or less than the distance between two second time charge levels.

4. electric connector as claimed in claim 2 is characterized in that: described first is the pars intermedia of conducting terminal, and described second portion is for extending and give prominence to the contact site of collets from an end of pars intermedia.

5. electric connector as claimed in claim 4 is characterized in that: described contact site be the vertical bar shape and with respect to pars intermedia be 90 the degree reverse, described two second shiny surfaces are in order to compress mutually with the conducting terminal of butt connector.

6. electric connector as claimed in claim 4, it is characterized in that: the rear end of described contact site and close pars intermedia are provided with the fixed part of thickening, all greater than the distance between two first shiny surfaces and two first time charge levels, described fixed part is immobilizated on the insulating body thickness of described fixed part.

7. electric connector as claimed in claim 4, it is characterized in that: first, second protuberance that described insulating body is provided with installation portion, extend from installation portion and between first, second protuberance and be exposed to airborne receiving space, described installation portion is provided with some through holes, and described contact site passes the through hole of installation portion and extends in the receiving space.

8. electric connector as claimed in claim 7, it is characterized in that: described collets are provided with the side, described terminal module comprises the shield shell on the side that is held in collets, described shield shell is provided with and extends beyond collets and extend into the interior L shaped shielding part of receiving space, and described L shaped shielding part is centered around the contact site periphery of close mutually conducting terminal.

9. terminal module, in order to be installed in the electric connector, described terminal module comprises collets and is fixed in plurality of conductive terminals on the collets, described conducting terminal is positioned at the first common plane, described conducting terminal comprises by edge and is embedded in the first in the collets and is exposed to airborne second portion, it is characterized in that: described first comprises and being oppositely arranged and with first parallel plane two first surfaces and be oppositely arranged and two second surfaces vertical with first plane; Described second portion comprise be oppositely arranged two the 3rd surfaces and be oppositely arranged and with two the 4th surfaces of the 3rd Surface Vertical; Distance between described two second surfaces is less than the distance between two first surfaces, and the distance between described two second surfaces is less than the distance between two the 3rd surfaces or less than the distance between two the 4th surfaces.

10. terminal module as claimed in claim 9 is characterized in that: described first surface is that first shiny surface, second surface are that first time charge level, the 3rd surface are that second shiny surface, the 4th surface are second time charge level; Described first is the pars intermedia of conducting terminal, described second portion is for extending and give prominence to the contact site of collets from an end of pars intermedia, described contact site be the vertical bar shape and with respect to pars intermedia be 90 the degree reverse, described two second shiny surfaces are in order to compress mutually with the conducting terminal of butt connector.

Images