High frequency electrical connector

1. Field of the Disclosure

The present disclosure relates to an electrical connector, and more particularly to an electrical connector for high frequency signal transmission.

2. Description of Related Arts

China Patent No. CN101364692 discloses a pair of signal contacts between a grounding contact and a power contact. Anyhow, some crosstalk may occur during signal transmission.

An improved arrangement is desired to have the electrical connector with the corresponding contacts properly arranged with each other in both the dimension and the configuration.

An object of the invention is to provide an electrical connector with an insulative housing and a plurality of contacts retained thereto. The housing includes a base and a tongue extending forwardly from the base. The contacts includes first contacts composed of a pair of first differential contacts, a first power contact and a first grounding contact respectively located by two sides of the pair of first differential contacts in a transverse direction. Each first contact includes, along the front-to-back direction perpendicular to the transverse direction, a front first contacting section, exposed above a mating face of the tongue, a rear first soldering section extending out of the housing, and a first connecting section located therebetween wherein in the pair of first different contacts, the first connecting sections are transversely offset from the corresponding first contacting sections and toward each other so as to have therebetween a distance, in the transverse direction, smaller than that between the corresponding first contacting sections.

The contacts further include second contacts composed of a second grounding contact with two pairs of second differential contacts by two sides in the transverse direction, respectively. Each second contact includes, along the font-to-back direction, a front second contacting section exposed upon the mating face of the tongue, a rear second soldering section extending out of the housing, and a second connecting section therebetween. Similar to the pair of first different contacts, in each pair of second differential contacts the second connecting sections are transversely offset from the corresponding second contacting sections and toward each other so as to have therebetween a distance, along the transverse direction, smaller than that between the corresponding second contacting sections.

Other objects, advantages and novel features of the disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of an electrical connector according to the invention;

FIG. 2 is another perspective view of the electrical connector of FIG. 1 ;

FIG. 3 is an exploded perspective view of the electrical connector of FIG. 1 ;

FIG. 4 is another exploded perspective view of the electrical connector of FIG. 3 ;

FIG. 5 is a further exploded perspective view of the electrical connector of FIG. 3 ;

FIG. 6 is another exploded perspective view of the electrical connector of FIG. 1 ;

FIG. 7 is a perspective view of the contacts of the electrical connector of FIG. 1 ;

FIG. 8 is a top view of the contacts of the electrical connector of FIG. 1 ;

FIG. 9 is a perspective view of the arranged contacts of the electrical connector of FIG. 1 : and

FIG. 10 is a bottom view of the arranged contacts of the electrical connector of FIG. 9 .

Referring to FIGS. 1-10 , an electrical connector 100 includes an insulative housing 1 , a plurality of contacts 2 retained in the housing 1 , a metallic shell enclosing the housing 1 , and a positioning seat 4 .

The housing 1 includes a base 11 , and a tongue 12 forwardly extending from the base 11 . The base 11 includes opposite upper surface 111 and lower surface 112 and two side surfaces 113 . In the base 11 , the first fixing slot 114 is recessed from the lower surface 112 , and a second fixing slot 115 extends vertically. Each side surface 113 forms a protrusion 1131 to engage the shell 3 .

The first fixing slot 114 includes a first bottom wall 1141 and two first side walls 1142 to form two engaging slots 1143 . The two fixing slots 115 form, along the corresponding side walls 1142 , two second side walls 1151 with corresponding engaging parts 1152 . The engaging slots 1143 and the engaging parts 1152 are respectively engaged with the positioning seat 4 . The tongue includes an upper face 121 , a lower face 122 opposite to the top face 121 , and a plurality of passageways 123 formed in the lower face 122 .

The contacts 2 include a plurality of first contacts 21 retained in the corresponding passageways 123 , and a plurality of second contacts insert-molded within the housing 1 . The first contacts 21 include a pair of first differential contacts 21 a , and a first grounding contact 21 b and a first power contact 21 c respectively located by two sides of the pair of first differential contacts 21 a . Each first contact 21 includes a first contacting section 211 extending beyond the mating face, i.e., the lower face 122 , a first soldering section 213 extending out of the housing 1 , and a first connecting 212 linked between the first contacting section 211 and the first soldering section 213 . The distance between the first connecting section 212 of the pair of first differential contacts is smaller than that between the corresponding contacting sections. Understandably, such a distance refers to the pitch measured by two center lines thereof. The first connecting section 212 includes a first offsetting section 2121 linked with the corresponding first contacting section 211 , a first oblique section 2122 linked to the first offsetting section 2121 , and a first horizontal section 2123 linked between the first oblique section 2122 and the first soldering section 213 . The distance between the two first oblique sections 2122 is equal to the distance between two first horizontal section 2123 . The distance D 2 between the two first horizontal sections 2123 is 1.5 mm which is smaller than the distance D 1 between the two first contacting sections 211 while the distance D 1 is equal to the distance D 3 between the two first soldering sections 213 . Notably, the difference between the distance D 1 and the distance D 2 results from the first offsetting sections 2121 . In fact, the distance D 2 is decreases from 2.0 mm of the conventional design to 1.5 mm of the instant invention. Notably, both the first connecting section 211 , the first offsetting section 2121 and the first oblique section 2122 are deflectable in the vertical direction so as to be deemed as a spring contacting arm with the corresponding first connecting section 211 at the free end. Actually, both the first offsetting section 2121 and the corresponding first oblique section 2122 extend in an oblique direction while the first contacting section 211 extends in an opposite oblique direction so as to form a contacting point/apex therebetween. The distance D 4 between the first offsetting sections 2121 of the pair of first differential contacts 21 a is variant between the distance D 2 and the distance D 1 /D 3 .

The second contacts 22 include a second grounding contact 22 a and two pairs of second differential contacts 22 b respectively located by two sides of the second grounding contact 22 a . Each second contact 22 includes a second contacting section 221 exposed upon the mating face, i.e., the lower face 122 , a second soldering section 223 extending out of the housing 1 , and a second connecting section 222 linked between the second contacting section 221 and the second soldering section 223 . In each pair of second differential contacts 22 b , the corresponding second connecting sections 222 are offset from the corresponding second contacting section 221 and toward each other.

In the second contact 22 , the second connecting section 222 includes a reduced section 2221 , and a second horizontal section 2222 located between the reduced section 2221 and the second soldering section 223 . The width d 1 of the second horizontal section 2222 of the second grounding contact 22 a is larger than the distance d 2 measured by two outermost edges of the corresponding first horizontal sections 2123 of the pair of first differential contacts 21 a . In fact, the width d 1 of the second horizontal section 2222 of the second grounding contact 22 a is increased from the original 2.1 mm of the conventional design to 3.1 mm of the instant invention.

in each pair of second differential contacts 22 b , a second offsetting section 2223 is formed between the corresponding reduced section 2221 and the corresponding second horizontal section 2222 . Notably, the distance between the two second horizontal sections 2222 is smaller than that between the corresponding second contacting sections 221 . In this embodiment, the distance d 3 measured by two opposite outermost edges of the second horizontal sections 2222 of the pair of second differential contacts 22 b is larger than the width of either the first grounding contact 21 b or the first power contact 21 c.

The first connecting sections 212 of the first contacts 21 and the second connecting sections of the second contacts 22 are arranged in two rows in the vertical direction. In a top view, the pair of first differential contacts 21 a is located between two pairs of second differential contacts 22 b . A space 5 is formed between the reduced sections 2221 of the pair of second differential contacts 22 b to receive the first contacting section 211 of the corresponding first power contact 21 b or the first grounding contact 21 c.

The positioning seat 4 includes a first seat 41 secured to the first fixing slot 114 , and the second seat 42 secured to the second fixing slot 115 . The first positioning seat 41 includes the securing parts 411 engaged with the corresponding engaging slots 1143 for securing the first seat 41 thereto. The second positioning seat 42 includes the securing parts 421 engaged with the engaging parts 1152 for securing the second seat 42 thereto.

In the invention, on one hand, the distance D 2 , i.e., the pitch, between the first horizontal sections 2123 of the pair of first differential contacts 21 a is reduced from 2.0 mm to 1.5 mm so as to reduce the corresponding distance d 2 measured by two outermost edges thereof. On the other hand, the width d 1 of the second horizontal section 2222 of the second grounding contact 22 a is increased from 2.1 mm to 3.1 mm so as to be larger than the distance d 1 . This arrangement may provide more efficient shielding. In addition, the second horizontal sections 2222 of the pair of second differential contacts 22 b are also offset toward each other by reducing the pitch D 2 ′ between the second horizontal sections 2222 of the pair of second differential contacts 22 b compared with the pitch D 1 ′ between the second contacting sections 221 so as to increase the distance d 4 ( FIGS. 9 and 10 ), measured by two corresponding opposite inner edges between the first horizontal section 2123 of the pair of first differential contact 21 a and the second horizontal section 2222 of the pair of neighboring second differential contacts 22 b , from 1.43840 mm to 1.64210 mm, thus eliminating the crosstalk due to signal transmission.

While a preferred embodiment in accordance with the present disclosure has been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present disclosure are considered within the scope of the present disclosure as described in the appended claims.