TWI603553B - Electrical connectors - Google Patents

Description

Electrical connector

This invention relates to an electrical connector, and more particularly to an electrical connector having a soldered wire.

Generally, an electrical connector having a soldering wire, such as disclosed in Taiwan Patent No. 575256, is exposed to air in a place where a wire is soldered to a terminal of an electrical connector, and a dielectric constant of air is smaller than a dielectric constant of the insulating body. Therefore, there is a higher impedance at this point that affects the performance of signal transmission.

Accordingly, it is an object of the present invention to provide an electrical connector that reduces the impedance of a wire and terminal soldering region.

Thus, in some embodiments, the electrical connector of the present invention comprises an insulative housing, a plurality of terminals, and a plurality of wires. The terminals are fixed to the insulating case, and each terminal has a fixing portion fixed to the insulating case, and a contact portion and a soldering portion respectively connected to the fixing portion, and a soldering portion of at least a part of the terminals A curved section is formed individually, and the inner surface of the curved section defines a filling space for filling the solder. The wires are soldered to the solder portions of the terminals, respectively, and the solder is filled in each of the filling spaces.

In some embodiments, the weld of each terminal is in the form of a sheet.

In some implementations, each fill space is filled with solder.

In some embodiments, each wire is soldered to a first surface of the corresponding weld.

In some embodiments, the soldering portion has a first surface and a second surface on opposite sides of each other, and two sides respectively connecting the first surface and the two sides of the second surface, and the first The surface forms the inner surface of the curved section.

In some embodiments, each wire is welded to the first surface of the corresponding weld and the wire welded to the weld having the curved section spans the fill space of the corresponding curved section.

In some embodiments, the solder joints of the terminals are arranged at side facing intervals.

In some embodiments, the soldering portions of the terminals of the terminals are arranged in a first row at a lateral interval, and the soldering portions of the remaining terminals are arranged in a second column at a lateral interval, the second column being parallel. first row.

In some embodiments, the welded portion of each terminal is formed with the curved segment.

In some implementations, the welded portion of the two adjacent terminals is formed with the curved portion, and the curved portions of the two adjacent terminals respectively protrude toward each other by a bump.

In some embodiments, one of the terminals is a signal terminal and the other portion is a ground terminal, and the solder portion of each signal terminal is formed with the curved portion.

In some implementations, the terminals are a pair of signal terminals and two ground terminals on opposite sides of the pair of signal terminals.

In some implementations, the terminals are two pairs of signal terminals and three ground terminals located between and on the two pairs of signal terminals.

In some implementations, the terminals are arranged with signal terminals and ground terminals interdigitated.

The invention has at least the following effects: the soldering area formed by filling the filling space of the soldering portion by solder can increase the conduction area on both sides of the soldering portion, thereby increasing the capacitance effect and reducing the impedance, and the wire can be The terminals have better weld strength.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIGS. 1 through 4, a first embodiment of an electrical connector of the present invention includes an insulative housing 1, a plurality of terminals 2, and a plurality of wires 3. In the present embodiment, the insulating case 1 includes a body 11 and a back cover 12 combined with the body 11, but the insulating case 1 may also include only the body 11, that is, the back cover 12 is omitted. The body 11 has a slot 111.

The terminals 2 are fixed to the insulating case 1 side by side. Each of the terminals 2 has a fixing portion 21 fixed to the insulating case 1 , a contact portion 22 connected to the fixing portion 21 , and a soldering portion 23 . The contact portion 22 extends into the slot 111. The soldering portion 23 protrudes from the outside of the back cover 12 and has a first surface 232 and a second surface 233 on opposite sides of each other, and two two connecting the first surface 232 and the second surface 233 respectively. Side side 231. The soldering portions 23 of at least a portion of the terminals 2 of the terminals 2 individually form a curved section 234, and the inner surface of the curved section 234 defines a filling space 235 for filling the solder 4. In the present embodiment, the welded portion 23 is in the form of a plate, which is more easily bent to form the curved portion 234 and has a larger plane to carry the solder 4, and the first surface 232 is the inner surface of the curved portion 234. In this embodiment, the soldering portion 23 of each terminal 2 is formed with the curved portion 234, but in other embodiments, only a portion of the soldering portion 23 of the terminal 2 may be formed with a curved portion 234 (see FIGS. 7 and 8). Shown).

Referring to FIG. 5, the wires 3 are respectively soldered to the soldering portions 23 of the terminals 2, and the solder 4 is filled in each of the filling spaces 235. In the present embodiment, each of the filling spaces 235 is filled with the solder 4, and each of the wires 3 is soldered to the first surface 232 of the corresponding soldering portion 23 and spans the filling space 235 of the corresponding curved segment 234. By filling the soldering region formed by the filling space 235 of the soldering portion 23 with the solder 4, the conduction area on both side faces 231 of the soldering portion 23 can be increased, thereby increasing the capacitance effect to lower the impedance, and the wire 3 and the terminal can be made. 2 has a better welding strength. Even if the filling space 235 is not completely filled with the solder 4, there is an effect of lowering the impedance, but it is preferable to fill it. The size of the filling space 235 can be adjusted by the length and bending depth of the curved section 234, and the matching impedance value can be controlled by adjusting the filling space 235.

The terminals 2 can define the pins according to the transmission specifications of the electrical connector. For example, referring to FIG. 6, the terminals 2 can be defined as the signal terminals S and the ground terminals G are arranged in a cross arrangement; for example, referring to FIG. 7 and FIG. 2 is defined as two pairs of signal terminals S and three ground terminals G located between and on the two pairs of signal terminals S. As shown in FIG. 7, the welded portion 23 of each signal terminal S is formed with the curved portion 234. As shown in FIG. 8, the welded portion 23 of each of the ground terminals G is formed with the curved portion 234. Other embodiments in which the curved portion 234 is formed only in the welded portion 23 of a portion of the terminal 2 may be provided such that the curved portion 234 is formed in the welded portion 23 of at least one of the adjacent two terminals 2, and is not limited to only At ground terminal G or signal terminal S. Of course, the number of the terminals 2 can be adjusted according to the transmission specifications of the electrical connector. In the embodiment, the number of the terminals 2 is seven, but it can also be adjusted to, for example, four, and the terminal 2 can be defined as a pair of signal terminals. The S and the two ground terminals G located on both sides of the pair of signal terminals S are not limited to the embodiment.

Referring to FIG. 9, a second embodiment of the electrical connector of the present invention is substantially the same as the first embodiment. However, in the first embodiment, the curved portion 234 of the soldering portion 23 of the terminal 2 is curved and curved. In the second embodiment, the curved section 234 of the terminal 2 weld portion 23 is a trapezoidal filling space 235 that is approximately trapezoidal and defines a trapezoid.

Referring to FIG. 10, a third embodiment of the electrical connector of the present invention is substantially the same as the second embodiment except that the curved segments 234 of the two adjacent terminals 2 are respectively convexly protruded from a bump 236. This increases the capacitance effect and reduces the impedance.

In the foregoing embodiment, the soldering portions 23 of the terminals 2 are arranged at opposite intervals with the side faces 231, but in a modified embodiment, the terminals 2 may not be side by side in the same plane, for example, referring to FIG. 11 and FIG. 12, The soldering portions 23 of the terminals 2 of the terminal 2 are arranged in a first row at opposite intervals with the side faces 231, and the soldering portions 23 of the remaining terminals 2 are arranged at a side interval 231 at a second column, the second column being parallel to the first Column. 11 and 12, the ground terminal G and the signal terminal S are divided into two columns, one of which is in the first column, and the other is in the second column.

In summary, the soldering area formed by the filling space 235 of the soldering portion 23 by the solder 4 can increase the conduction area on both side surfaces 231 of the soldering portion 23, thereby increasing the capacitance effect and reducing the impedance, and The wire 3 and the terminal 2 have a better welding strength.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

<TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td></tr></TBODY></TABLE>1···· ······ Insulation case 11········· Body 111······· Slot 12········ Back cover 2·········· Terminals 21········ Fixing parts 22········ Contact parts 23········ Welded parts 231······ Side 232······ First surface 233······ Second surface 234······ Curved section 235······ Filling space 236······Bumps 3········· · Wire 4····································································· Terminal         

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a perspective view of a first embodiment of the electrical connector of the present invention; 3 is an exploded perspective view of the first embodiment; FIG. 4 is a perspective view of the first embodiment; FIG. 5 is a perspective view of the first embodiment, illustrating a plurality of terminals and corresponding wires FIG. 6 is a perspective view of the first embodiment, illustrating the definition of the positions of the terminals; FIG. 7 is a perspective view of the first embodiment, showing that only the welded portions of the terminals form a curved section FIG. 8 is a perspective view of the first embodiment, illustrating another variation of the soldering portion of the terminal forming the bent portion and the definition of the pin position of the terminal; Figure 9 is a view similar to Figure 6 illustrating the terminal of the second embodiment of the electrical connector of the present invention; Figure 10 is a view similar to Figure 6 illustrating the terminal of the third embodiment of the electrical connector of the present invention; Is a rear view, illustrating The terminal of the electrical connector of the present invention is arranged in two rows; and Figure 12 is a view similar to Figure 11 illustrating another embodiment in which the terminals of the electrical connector of the present invention are arranged in two rows.

<TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td></tr></TBODY></TABLE>2···· ······ Terminals 21········ Fixing parts 22········ Contact parts 23········ Welded parts 231······ Side 232· ····· First surface 233······ Second surface 234······ Curved section 235······ Filling space 3·········· ········· Solder     

Claims (14)

An electrical connector comprising: an insulating case; a plurality of terminals fixed to the insulating case, each terminal having a fixing portion fixed to the insulating case, and a contact portion and a soldering portion connected to the fixing portion The soldering portions of at least a part of the terminals form a curved portion, and the inner surface of the curved portion defines a filling space for filling the solder; and the plurality of wires are respectively soldered to the soldering portions of the terminals, and Fill the solder in each filling space. The electrical connector of claim 1, wherein the soldering portion of each terminal is in the form of a plate. The electrical connector of claim 1, wherein each of the filling spaces is filled with solder. The electrical connector of claim 1, wherein the soldering portion of each terminal has a first surface and a second surface on opposite sides of each other, and two of the two surfaces respectively connecting the first surface and the second surface a side of the side, and the first surface is an inner surface of the curved section. The electrical connector of claim 4, wherein each of the wires is soldered to the first surface of the corresponding weld. The electrical connector of claim 4, wherein each wire is soldered to the first surface of the corresponding weld and the wire welded to the weld having the curved section spans the fill space of the corresponding curved section. The electrical connector of claim 4, wherein the soldering portions of the terminals are arranged side by side at intervals. The electrical connector of claim 4, wherein the soldering portions of the terminals of the terminals are arranged in a first row at a lateral interval, and the soldering portions of the remaining terminals are arranged in a second row at a lateral interval. The second column is parallel to the first column. The electrical connector of claim 1, wherein the welded portion of each terminal is formed with the curved portion. The electrical connector of claim 1, wherein the welded portion of the two adjacent terminals is formed with the curved portion, and the curved portions of the two adjacent terminals respectively protrude toward each other by a bump. The electrical connector of claim 1, wherein one of the terminals is a signal terminal and the other portion is a ground terminal, and the welded portion of each signal terminal is formed with the curved portion. The electrical connector of any one of claims 9 to 11, wherein the terminals are a pair of signal terminals and two ground terminals located on opposite sides of the pair of signal terminals. The electrical connector of any one of claims 9 to 11, wherein the terminals are two pairs of signal terminals and three ground terminals located between and on the two pairs of signal terminals. The electrical connector of any one of claims 9 to 11, wherein the terminals are signal terminals and ground terminals arranged in a cross arrangement.