Electrical connector capable of suppressing crosstalk

An electrical connector includes insulating portions arranged side by side, terminal sets, shield sets, and a casing. Each terminal set includes signal terminals and ground terminals. Each signal/ground terminal includes a fixing section disposed in the insulating portion, an assembling section downwardly stretching from the fixing section to protrude from the insulating portion, and a contacting section forwardly stretching from the fixing section to protrude from the insulating portion. Each shield set including shields is disposed on a lateral surface of the insulating portion. Each shield is spacedly arranged and connected to the ground terminal. Each shield includes a body section having at least one bending section, and a protrusion section protruding from the body section. The body section and the protrusion section shield the assembling section and the contacting section of the signal terminal respectively. It can effectively suppress crosstalk between the signal terminals by the shield sets.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an electrical connector and, more particularly, to an electrical connector capable of effectively suppressing crosstalk between signal terminals.

2. Description of the Prior Art

A computer server, such as a blade server, a rack mount server and so on, includes multiple high-speed electrical connectors disposed on its internal circuit boards. The aforementioned electrical connector includes a plurality of terminals arranged intensively to rapidly transmit a large quantity of signals. However, crosstalk frequently happens between signal terminals of the electrical connector, especially in a situation of high-frequency signal transmission, and the crosstalk effect decreases the efficiency of signal transmission or interrupts the signal transmission.

Please refer toFIG. 8, which illustrates an improved electrical connector to suppress crosstalk between its signal terminals. The electrical connector includes a plurality of insulating portions80arranged side by side. A terminal set including a plurality of terminals81is disposed in the corresponding insulating portion80, and a shield82is disposed on a lateral surface of the corresponding insulating portions80. Thus, the shields82and the insulating portions80are arranged in an interlaced manner, and accordingly, the two adjacent terminal sets have the corresponding shield82disposed therebetween. Therefore, the electrical connector can suppress crosstalk between the terminal sets. In addition, the electrical connector further includes a casing83containing the insulating portions80, and a cover84assembled with the insulating portions80to fasten the insulating portions80. However, the shield82is an entirely slice structure with a certain length and width, which easily provides a path with a certain length to transmit electric charges to result in an antenna effect to cause extra signal interference. For example, an oblique path P0of the shield82is the longest path which easily results in the antenna effect.

SUMMARY OF THE INVENTION

The present invention provides an electrical connector capable of effectively suppressing crosstalk between signal terminals and decreasing an antenna effect due to a shield with an entirely slice structure.

According to the invention, an electrical connector capable of suppressing crosstalk includes:

a plurality of insulating portions, with the insulating portions arranged side by side;

a plurality of terminal sets, with each of the terminal sets disposed in the corresponding insulating portion, with each of the terminal sets including a plurality of signal terminals and a plurality of ground terminals, with each of the signal terminals or the ground terminals including a fixing section, an assembling section and a contacting section, with the fixing section disposed in the corresponding insulating portion, with the assembling section downwardly stretching from an end of the fixing section to protrude from the corresponding insulating portion, and with the contacting section forwardly stretching from the other end of the fixing section to protrude from the corresponding insulating portion;

a plurality of shield sets, with each of the shield sets disposed on a lateral surface of the corresponding insulating portion, with each of the shield sets including a plurality of shields, with each of the shields spacedly arranged and connected to the corresponding ground terminal, with each of the shields including a body section and a protrusion section, with the body section having at least one bending section and shielding a lateral surface of the assembling section of the corresponding signal terminal, and with the protrusion section protruding from the body section to be out of the insulating portion and shielding a lateral surface of the contacting section of the corresponding signal terminal; and

a casing containing the insulating portions.

According to the invention, the terminal set is disposed in the insulating portion in an insert molding manner.

According to the invention, a plurality of assembling slots is formed on the lateral surface of the insulating portion, and the shield of the shield set is disposed in the corresponding assembling slot.

According to the invention, a plurality of first combining components is formed on the insulating portion, and at least one second combining component is formed on the shield of the shield set to combine with the corresponding first combining component of the insulating portion.

According to the invention, the first combining component is a recess, and the second combining component is a protrusion corresponding to the first combining component.

According to the invention, the first combining component is a protrusion, and the second combining component is a recess corresponding to the first combining component.

According to the invention, a first connecting component is formed on the shield of the shield set, and a second connecting component is formed on the ground terminal to connect with the corresponding first connecting component.

According to the invention, the first connecting component is a buckling unit, and the second connecting component is a buckled aperture corresponding to the buckling unit.

According to the invention, the body section further has a plurality of straight sections, and the bending section has two ends connected to the two corresponding straight sections respectively.

According to the invention, the electrical connector further includes a cover assembled with rear ends of the insulating portions.

According to the invention, a plurality of opening is formed on a front end of the casing, and the contacting section of the signal terminal or the ground terminal is disposed in the corresponding opening.

Each shield set is disposed on the lateral surface of the corresponding insulating portion in which the corresponding terminal set is disposed, so that the terminal sets and the shield sets are arranged in an interlaced manner. Moreover, each shield of the shield set can simultaneously shield the assembling section and the contacting section of the corresponding signal terminal of the terminal set, so that the crosstalk effect between the signal terminals of the adjacent terminal sets can be obviously decreased. In addition, the shields of the shield set are spacedly arranged, and each shield has at least one bending section. Comparing to the conventional single-slice shield shown inFIG. 8, the length of the straight path on the shield is decreased to effectively suppress the antenna effect which results in the extra signal interference, and further to suppress the crosstalk between the signal terminals to increase efficiency and stability of the signal transmission.

DETAILED DESCRIPTION

The preferred embodiment of the present invention will now be further described below in detail in conjunction with the accompanying drawings. Wherever possible, the same or similar reference characters are used in the drawings and the description to refer to the same or like parts. For purposes of convenience and clarity only, directional terms, such as upper, lower, front, rear, forwardly, downwardly may be used with respect to the drawings. These and similar directional terms should not be construed to limit the scope of the present invention in any manner.

Please refer toFIG. 1andFIG. 2. The present invention provides an electrical connector capable of suppressing crosstalk, which can be disposed on a circuit board (not shown) in a welding manner. The electrical connector includes a plurality of insulating portions1, a plurality of terminal sets2, a plurality of shield sets3, a casing4and a cover5.

Please further refer toFIG. 3toFIG. 6. Each of the terminal sets2is disposed in the corresponding insulating portion1. In this embodiment, each of the terminal sets2is disposed in the corresponding insulating portion1in an insert molding manner. Each of the terminal sets2includes a plurality of signal terminals20sand a plurality of ground terminals20g. Each of the signal terminals20sor the ground terminals20gincludes a fixing section21, an assembling section22and a contacting section23. The fixing section21is disposed in the corresponding insulating portion1. The assembling section22downwardly stretches from an end of the fixing section21to protrude from the corresponding insulating portion1, and can be disposed on the circuit board in a welding manner or a punching manner. The contacting section23forwardly stretches from the other end of the fixing section21to protrude from the corresponding insulating portion1. The contacting section23can be a fork-shaped unit.

Each of the shield sets3is disposed on a lateral surface of the corresponding insulating portion1. Each of the shield sets3includes a plurality of shields30. In this embodiment, a plurality of assembling slots10is formed on the lateral surface of each of the insulating portions1, and each of the shields30of the shield set3is disposed in the corresponding assembling slot10. Each of the shields30is spacedly arranged and the adjacent shields30do not contact with each other. Each of the shields30is connected to the corresponding ground terminal20g. Each of the shields30includes a body section31and a protrusion section32. The body section31has at least one bending section and shields a lateral surface of the assembling section22of the corresponding signal terminal20s. The protrusion section32protrudes from the body section31to be out of the insulating portion1and shields a lateral surface of the contacting section23of the corresponding signal terminal20s.

A plurality of first combining components101,102is formed on each of the insulating portions1. At least one second combining component is formed on each of the shields30of the shield set3to combine with the corresponding first combining component of the insulating portion1. In this embodiment as shown inFIG. 4, one second combining component301is formed on the upper or middle shield30to combine with the corresponding first combining component101formed on the insulating portion1, and two second combining components301,302are formed on the lower shield30to combine with the corresponding first combining components101,102formed on the insulating portion1. Therefore, each of the shield sets3is disposed on the lateral surface of the corresponding insulating portion1by assembly of the first combining components101,102and the second combining components301,302. In this embodiment, the first combining component101is a recess, and the second combining component301is a protrusion corresponding to the first combining component101. Moreover, the first combining component102is a protrusion, and the second combining component302is a recess corresponding to the first combining component102.

At least one first connecting component303is formed on each of the shields30of the shield set3. A least one second connecting component203is formed on the corresponding ground terminal20gto connect with the corresponding first connecting component303. Thus, each of the shield sets3is connected to the corresponding ground terminal20gby assembly of the first connecting component(s)303and the second connecting component(s)203. In this embodiment, the first connecting component303is a buckling unit, and the second connecting component203is a buckled aperture corresponding to the foresaid buckling unit.

Please further refer toFIG. 7. The body section31of each of the shields30has at least one bending section311and a plurality of straight sections312. Each bending section311has two ends connected to the two corresponding straight sections312respectively. According to the antenna effect, an exposed metal block provides an antenna property to gather electric charges and to increase electric potential for generating electric current. The electric current is transmitted through the metal block to easily form high-frequency or low-frequency interference. The shield set3is divided into multiple shields30spacedly arranged, which effectively decreases the antenna effect of the shield set3, because each of the shields30has a decreased antenna effect. Specifically speaking, the shield30is a strip-shaped structure and has a narrow width. The width of the shield30is smaller than a width of a conventional single-slice shield whose overall size is substantially equal to assembly of the shields30, so that the shield30can suppress the antenna effect. In addition, the at least one bending section311is formed on each shield30, and the adjacent straight sections312cannot connect to each other due to the bending section311, so that the electric current is not easily transmitted via the shorter paths P1, P2, P3provided by the straight sections312, and the antenna effect can be effectively suppressed to prevent an extra signal interference.

Please refer toFIG. 1toFIG. 3again. The insulating portions1are arranged side by side. The casing4contains the insulating portions1for assembly of the insulating portions1. A plurality of openings41is formed on a front end of the casing4, and the contacting section23of the signal terminal20sor the ground terminal20gis disposed in the corresponding opening41. The cover5is assembled with rear ends of the insulating portions1to ensure that the insulating portions1can be accurately arranged side by side and assembled with one another.

The present invention has several advantages. One of the advantages is that each shield set3is disposed on the lateral surface of the corresponding insulating portion1in which the corresponding terminal set2is disposed, so that the terminal sets2and the shield sets3are disposed in an interlaced manner. Moreover, each shield30of the shield set3can simultaneously shield the assembling section22and the contacting section23of the corresponding signal terminal20sof the terminal set2, so that the crosstalk effect between the signal terminals20sof the adjacent terminal sets2can be obviously decreased, thus effectively suppressing the crosstalk between the signal terminals and increasing efficiency and stability of the signal transmission.

Another advantage is that the strip-shaped shields30of the shield set3are spacedly arranged, and each shield30has at least one bending section311. Comparing to the conventional single-slice shield82shown inFIG. 8, lengths of the straight paths P1, P2, P3on the shield30is decreased to effectively suppress the antenna effect which results in the extra signal interference, and further to suppress the crosstalk between the signal terminals to increase efficiency and stability of the signal transmission.